1 # SPDX-License-Identifier: GPL-2.0-only !! 1 # SPDX-License-Identifier: GPL-2.0
2 # !! 2 config MIPS
3 # For a description of the syntax of this conf <<
4 # see Documentation/kbuild/kconfig-language.rs <<
5 # <<
6 <<
7 config 64BIT <<
8 bool <<
9 <<
10 config 32BIT <<
11 bool 3 bool
12 !! 4 default y
13 config RISCV !! 5 select ARCH_32BIT_OFF_T if !64BIT
14 def_bool y !! 6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
15 select ACPI_GENERIC_GSI if ACPI !! 7 select ARCH_HAS_CURRENT_STACK_POINTER if !CC_IS_CLANG || CLANG_VERSION >= 140000
16 select ACPI_MCFG if (ACPI && PCI) !! 8 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
17 select ACPI_PPTT if ACPI <<
18 select ACPI_REDUCED_HARDWARE_ONLY if A <<
19 select ACPI_SPCR_TABLE if ACPI <<
20 select ARCH_DMA_DEFAULT_COHERENT <<
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION <<
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S <<
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if <<
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if <<
25 select ARCH_ENABLE_THP_MIGRATION if TR <<
26 select ARCH_HAS_BINFMT_FLAT <<
27 select ARCH_HAS_CURRENT_STACK_POINTER <<
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU <<
29 select ARCH_HAS_DEBUG_VM_PGTABLE <<
30 select ARCH_HAS_DEBUG_WX <<
31 select ARCH_HAS_FAST_MULTIPLIER <<
32 select ARCH_HAS_FORTIFY_SOURCE 9 select ARCH_HAS_FORTIFY_SOURCE
33 select ARCH_HAS_GCOV_PROFILE_ALL <<
34 select ARCH_HAS_GIGANTIC_PAGE <<
35 select ARCH_HAS_KCOV 10 select ARCH_HAS_KCOV
36 select ARCH_HAS_KERNEL_FPU_SUPPORT if !! 11 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
37 select ARCH_HAS_MEMBARRIER_CALLBACKS !! 12 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
38 select ARCH_HAS_MEMBARRIER_SYNC_CORE !! 13 select ARCH_HAS_STRNCPY_FROM_USER
39 select ARCH_HAS_MMIOWB !! 14 select ARCH_HAS_STRNLEN_USER
40 select ARCH_HAS_NON_OVERLAPPING_ADDRES <<
41 select ARCH_HAS_PMEM_API <<
42 select ARCH_HAS_PREPARE_SYNC_CORE_CMD <<
43 select ARCH_HAS_PTE_DEVMAP if 64BIT && <<
44 select ARCH_HAS_PTE_SPECIAL <<
45 select ARCH_HAS_SET_DIRECT_MAP if MMU <<
46 select ARCH_HAS_SET_MEMORY if MMU <<
47 select ARCH_HAS_STRICT_KERNEL_RWX if M <<
48 select ARCH_HAS_STRICT_MODULE_RWX if M <<
49 select ARCH_HAS_SYNC_CORE_BEFORE_USERM <<
50 select ARCH_HAS_SYSCALL_WRAPPER <<
51 select ARCH_HAS_TICK_BROADCAST if GENE 15 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
52 select ARCH_HAS_UBSAN !! 16 select ARCH_HAS_UBSAN_SANITIZE_ALL
53 select ARCH_HAS_VDSO_DATA !! 17 select ARCH_HAS_GCOV_PROFILE_ALL
54 select ARCH_KEEP_MEMBLOCK if ACPI !! 18 select ARCH_KEEP_MEMBLOCK
55 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL !! 19 select ARCH_SUPPORTS_UPROBES
56 select ARCH_OPTIONAL_KERNEL_RWX if ARC !! 20 select ARCH_USE_BUILTIN_BSWAP
57 select ARCH_OPTIONAL_KERNEL_RWX_DEFAUL <<
58 select ARCH_STACKWALK <<
59 select ARCH_SUPPORTS_ATOMIC_RMW <<
60 select ARCH_SUPPORTS_CFI_CLANG <<
61 select ARCH_SUPPORTS_DEBUG_PAGEALLOC i <<
62 select ARCH_SUPPORTS_HUGETLBFS if MMU <<
63 # LLD >= 14: https://github.com/llvm/l <<
64 select ARCH_SUPPORTS_LTO_CLANG if LLD_ <<
65 select ARCH_SUPPORTS_LTO_CLANG_THIN if <<
66 select ARCH_SUPPORTS_PAGE_TABLE_CHECK <<
67 select ARCH_SUPPORTS_PER_VMA_LOCK if M <<
68 select ARCH_SUPPORTS_RT <<
69 select ARCH_SUPPORTS_SHADOW_CALL_STACK <<
70 select ARCH_USE_CMPXCHG_LOCKREF if 64B 21 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
71 select ARCH_USE_MEMTEST 22 select ARCH_USE_MEMTEST
72 select ARCH_USE_QUEUED_RWLOCKS 23 select ARCH_USE_QUEUED_RWLOCKS
73 select ARCH_USE_SYM_ANNOTATIONS !! 24 select ARCH_USE_QUEUED_SPINLOCKS
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN !! 25 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU <<
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ 26 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
77 select ARCH_WANT_FRAME_POINTERS !! 27 select ARCH_WANT_IPC_PARSE_VERSION
78 select ARCH_WANT_GENERAL_HUGETLB if !R !! 28 select ARCH_WANT_LD_ORPHAN_WARN
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B !! 29 select BUILDTIME_TABLE_SORT
80 select ARCH_WANT_LD_ORPHAN_WARN if !XI <<
81 select ARCH_WANT_OPTIMIZE_DAX_VMEMMAP <<
82 select ARCH_WANT_OPTIMIZE_HUGETLB_VMEM <<
83 select ARCH_WANTS_NO_INSTR <<
84 select ARCH_WANTS_THP_SWAP if HAVE_ARC <<
85 select BINFMT_FLAT_NO_DATA_START_OFFSE <<
86 select BUILDTIME_TABLE_SORT if MMU <<
87 select CLINT_TIMER if RISCV_M_MODE <<
88 select CLONE_BACKWARDS 30 select CLONE_BACKWARDS
89 select COMMON_CLK !! 31 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
90 select CPU_PM if CPU_IDLE || HIBERNATI !! 32 select CPU_PM if CPU_IDLE
91 select EDAC_SUPPORT <<
92 select FRAME_POINTER if PERF_EVENTS || <<
93 select FTRACE_MCOUNT_USE_PATCHABLE_FUN <<
94 select GENERIC_ARCH_TOPOLOGY <<
95 select GENERIC_ATOMIC64 if !64BIT 33 select GENERIC_ATOMIC64 if !64BIT
96 select GENERIC_CLOCKEVENTS_BROADCAST i !! 34 select GENERIC_CMOS_UPDATE
97 select GENERIC_CPU_DEVICES !! 35 select GENERIC_CPU_AUTOPROBE
98 select GENERIC_CPU_VULNERABILITIES !! 36 select GENERIC_GETTIMEOFDAY
99 select GENERIC_EARLY_IOREMAP !! 37 select GENERIC_IOMAP
100 select GENERIC_ENTRY !! 38 select GENERIC_IRQ_PROBE
101 select GENERIC_GETTIMEOFDAY if HAVE_GE <<
102 select GENERIC_IDLE_POLL_SETUP <<
103 select GENERIC_IOREMAP if MMU <<
104 select GENERIC_IRQ_IPI if SMP <<
105 select GENERIC_IRQ_IPI_MUX if SMP <<
106 select GENERIC_IRQ_MULTI_HANDLER <<
107 select GENERIC_IRQ_SHOW 39 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 40 select GENERIC_ISA_DMA if EISA
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED !! 41 select GENERIC_LIB_ASHLDI3
110 select GENERIC_PCI_IOMAP !! 42 select GENERIC_LIB_ASHRDI3
111 select GENERIC_PTDUMP if MMU !! 43 select GENERIC_LIB_CMPDI2
112 select GENERIC_SCHED_CLOCK !! 44 select GENERIC_LIB_LSHRDI3
>> 45 select GENERIC_LIB_UCMPDI2
>> 46 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
113 select GENERIC_SMP_IDLE_THREAD 47 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 48 select GENERIC_TIME_VSYSCALL
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 49 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
116 select HARDIRQS_SW_RESEND !! 50 select HAVE_ARCH_COMPILER_H
117 select HAS_IOPORT if MMU !! 51 select HAVE_ARCH_JUMP_LABEL
118 select HAVE_ARCH_AUDITSYSCALL !! 52 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ <<
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 <<
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE <<
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i <<
123 select HAVE_ARCH_KASAN if MMU && 64BIT <<
124 select HAVE_ARCH_KASAN_VMALLOC if MMU <<
125 select HAVE_ARCH_KFENCE if MMU && 64BI <<
126 select HAVE_ARCH_KGDB if !XIP_KERNEL <<
127 select HAVE_ARCH_KGDB_QXFER_PKT <<
128 select HAVE_ARCH_MMAP_RND_BITS if MMU 53 select HAVE_ARCH_MMAP_RND_BITS if MMU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 54 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER 55 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK 56 select HAVE_ARCH_TRACEHOOK
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 57 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
136 select HAVE_ARCH_USERFAULTFD_MINOR if <<
137 select HAVE_ARCH_VMAP_STACK if MMU && <<
138 select HAVE_ASM_MODVERSIONS 58 select HAVE_ASM_MODVERSIONS
139 select HAVE_CONTEXT_TRACKING_USER 59 select HAVE_CONTEXT_TRACKING_USER
>> 60 select HAVE_TIF_NOHZ
>> 61 select HAVE_C_RECORDMCOUNT
140 select HAVE_DEBUG_KMEMLEAK 62 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS if MMU !! 63 select HAVE_DEBUG_STACKOVERFLOW
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER !! 64 select HAVE_DMA_CONTIGUOUS
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT !! 65 select HAVE_DYNAMIC_FTRACE
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i !! 66 select HAVE_EBPF_JIT if !CPU_MICROMIPS && \
145 select HAVE_FTRACE_MCOUNT_RECORD if !X !! 67 !CPU_DADDI_WORKAROUNDS && \
>> 68 !CPU_R4000_WORKAROUNDS && \
>> 69 !CPU_R4400_WORKAROUNDS
>> 70 select HAVE_EXIT_THREAD
>> 71 select HAVE_FAST_GUP
>> 72 select HAVE_FTRACE_MCOUNT_RECORD
146 select HAVE_FUNCTION_GRAPH_TRACER 73 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 74 select HAVE_FUNCTION_TRACER
148 select HAVE_FUNCTION_TRACER if !XIP_KE <<
149 select HAVE_EBPF_JIT if MMU <<
150 select HAVE_GUP_FAST if MMU <<
151 select HAVE_FUNCTION_ARG_ACCESS_API <<
152 select HAVE_FUNCTION_ERROR_INJECTION <<
153 select HAVE_GCC_PLUGINS 75 select HAVE_GCC_PLUGINS
154 select HAVE_GENERIC_VDSO if MMU && 64B !! 76 select HAVE_GENERIC_VDSO
>> 77 select HAVE_IOREMAP_PROT
>> 78 select HAVE_IRQ_EXIT_ON_IRQ_STACK
155 select HAVE_IRQ_TIME_ACCOUNTING 79 select HAVE_IRQ_TIME_ACCOUNTING
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE !! 80 select HAVE_KPROBES
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL !! 81 select HAVE_KRETPROBES
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL !! 82 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL !! 83 select HAVE_MOD_ARCH_SPECIFIC
160 select HAVE_KERNEL_LZO if !XIP_KERNEL !! 84 select HAVE_NMI
161 select HAVE_KERNEL_UNCOMPRESSED if !XI <<
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL <<
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & <<
164 select HAVE_KPROBES if !XIP_KERNEL <<
165 select HAVE_KRETPROBES if !XIP_KERNEL <<
166 # https://github.com/ClangBuiltLinux/l <<
167 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
168 select HAVE_MOVE_PMD <<
169 select HAVE_MOVE_PUD <<
170 select HAVE_PAGE_SIZE_4KB <<
171 select HAVE_PCI <<
172 select HAVE_PERF_EVENTS 85 select HAVE_PERF_EVENTS
173 select HAVE_PERF_REGS 86 select HAVE_PERF_REGS
174 select HAVE_PERF_USER_STACK_DUMP 87 select HAVE_PERF_USER_STACK_DUMP
175 select HAVE_POSIX_CPU_TIMERS_TASK_WORK <<
176 select HAVE_PREEMPT_DYNAMIC_KEY if !XI <<
177 select HAVE_REGS_AND_STACK_ACCESS_API 88 select HAVE_REGS_AND_STACK_ACCESS_API
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 select HAVE_RSEQ 89 select HAVE_RSEQ
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS !! 90 select HAVE_SPARSE_SYSCALL_NR
181 select HAVE_SAMPLE_FTRACE_DIRECT <<
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
183 select HAVE_STACKPROTECTOR 91 select HAVE_STACKPROTECTOR
184 select HAVE_SYSCALL_TRACEPOINTS 92 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 93 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
186 select IRQ_DOMAIN <<
187 select IRQ_FORCED_THREADING 94 select IRQ_FORCED_THREADING
188 select KASAN_VMALLOC if KASAN !! 95 select ISA if EISA
189 select LOCK_MM_AND_FIND_VMA !! 96 select MODULES_USE_ELF_REL if MODULES
190 select MMU_GATHER_RCU_TABLE_FREE if SM !! 97 select MODULES_USE_ELF_RELA if MODULES && 64BIT
191 select MODULES_USE_ELF_RELA if MODULES !! 98 select PERF_USE_VMALLOC
192 select OF !! 99 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
193 select OF_EARLY_FLATTREE !! 100 select RTC_LIB
194 select OF_IRQ <<
195 select PCI_DOMAINS_GENERIC if PCI <<
196 select PCI_ECAM if (ACPI && PCI) <<
197 select PCI_MSI if PCI <<
198 select RISCV_ALTERNATIVE if !XIP_KERNE <<
199 select RISCV_APLIC <<
200 select RISCV_IMSIC <<
201 select RISCV_INTC <<
202 select RISCV_TIMER if RISCV_SBI <<
203 select SIFIVE_PLIC <<
204 select SPARSE_IRQ <<
205 select SYSCTL_EXCEPTION_TRACE 101 select SYSCTL_EXCEPTION_TRACE
206 select THREAD_INFO_IN_TASK <<
207 select TRACE_IRQFLAGS_SUPPORT 102 select TRACE_IRQFLAGS_SUPPORT
208 select UACCESS_MEMCPY if !MMU !! 103 select ARCH_HAS_ELFCORE_COMPAT
209 select USER_STACKTRACE_SUPPORT !! 104 select HAVE_ARCH_KCSAN if 64BIT
>> 105
>> 106 config MIPS_FIXUP_BIGPHYS_ADDR
>> 107 bool
>> 108
>> 109 config MIPS_GENERIC
>> 110 bool
>> 111
>> 112 config MACH_INGENIC
>> 113 bool
>> 114 select SYS_SUPPORTS_32BIT_KERNEL
>> 115 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 116 select SYS_SUPPORTS_ZBOOT
>> 117 select DMA_NONCOHERENT
>> 118 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 119 select IRQ_MIPS_CPU
>> 120 select PINCTRL
>> 121 select GPIOLIB
>> 122 select COMMON_CLK
>> 123 select GENERIC_IRQ_CHIP
>> 124 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
>> 125 select USE_OF
>> 126 select CPU_SUPPORTS_CPUFREQ
>> 127 select MIPS_EXTERNAL_TIMER
>> 128
>> 129 menu "Machine selection"
>> 130
>> 131 choice
>> 132 prompt "System type"
>> 133 default MIPS_GENERIC_KERNEL
>> 134
>> 135 config MIPS_GENERIC_KERNEL
>> 136 bool "Generic board-agnostic MIPS kernel"
>> 137 select ARCH_HAS_SETUP_DMA_OPS
>> 138 select MIPS_GENERIC
>> 139 select BOOT_RAW
>> 140 select BUILTIN_DTB
>> 141 select CEVT_R4K
>> 142 select CLKSRC_MIPS_GIC
>> 143 select COMMON_CLK
>> 144 select CPU_MIPSR2_IRQ_EI
>> 145 select CPU_MIPSR2_IRQ_VI
>> 146 select CSRC_R4K
>> 147 select DMA_NONCOHERENT
>> 148 select HAVE_PCI
>> 149 select IRQ_MIPS_CPU
>> 150 select MIPS_AUTO_PFN_OFFSET
>> 151 select MIPS_CPU_SCACHE
>> 152 select MIPS_GIC
>> 153 select MIPS_L1_CACHE_SHIFT_7
>> 154 select NO_EXCEPT_FILL
>> 155 select PCI_DRIVERS_GENERIC
>> 156 select SMP_UP if SMP
>> 157 select SWAP_IO_SPACE
>> 158 select SYS_HAS_CPU_MIPS32_R1
>> 159 select SYS_HAS_CPU_MIPS32_R2
>> 160 select SYS_HAS_CPU_MIPS32_R6
>> 161 select SYS_HAS_CPU_MIPS64_R1
>> 162 select SYS_HAS_CPU_MIPS64_R2
>> 163 select SYS_HAS_CPU_MIPS64_R6
>> 164 select SYS_SUPPORTS_32BIT_KERNEL
>> 165 select SYS_SUPPORTS_64BIT_KERNEL
>> 166 select SYS_SUPPORTS_BIG_ENDIAN
>> 167 select SYS_SUPPORTS_HIGHMEM
>> 168 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 169 select SYS_SUPPORTS_MICROMIPS
>> 170 select SYS_SUPPORTS_MIPS16
>> 171 select SYS_SUPPORTS_MIPS_CPS
>> 172 select SYS_SUPPORTS_MULTITHREADING
>> 173 select SYS_SUPPORTS_RELOCATABLE
>> 174 select SYS_SUPPORTS_SMARTMIPS
>> 175 select SYS_SUPPORTS_ZBOOT
>> 176 select UHI_BOOT
>> 177 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 178 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 179 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 180 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 181 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 182 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 183 select USE_OF
>> 184 help
>> 185 Select this to build a kernel which aims to support multiple boards,
>> 186 generally using a flattened device tree passed from the bootloader
>> 187 using the boot protocol defined in the UHI (Unified Hosting
>> 188 Interface) specification.
>> 189
>> 190 config MIPS_ALCHEMY
>> 191 bool "Alchemy processor based machines"
>> 192 select PHYS_ADDR_T_64BIT
>> 193 select CEVT_R4K
>> 194 select CSRC_R4K
>> 195 select IRQ_MIPS_CPU
>> 196 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is
>> 197 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
>> 198 select SYS_HAS_CPU_MIPS32_R1
>> 199 select SYS_SUPPORTS_32BIT_KERNEL
>> 200 select SYS_SUPPORTS_APM_EMULATION
>> 201 select GPIOLIB
>> 202 select SYS_SUPPORTS_ZBOOT
>> 203 select COMMON_CLK
>> 204
>> 205 config AR7
>> 206 bool "Texas Instruments AR7"
>> 207 select BOOT_ELF32
>> 208 select COMMON_CLK
>> 209 select DMA_NONCOHERENT
>> 210 select CEVT_R4K
>> 211 select CSRC_R4K
>> 212 select IRQ_MIPS_CPU
>> 213 select NO_EXCEPT_FILL
>> 214 select SWAP_IO_SPACE
>> 215 select SYS_HAS_CPU_MIPS32_R1
>> 216 select SYS_HAS_EARLY_PRINTK
>> 217 select SYS_SUPPORTS_32BIT_KERNEL
>> 218 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 219 select SYS_SUPPORTS_MIPS16
>> 220 select SYS_SUPPORTS_ZBOOT_UART16550
>> 221 select GPIOLIB
>> 222 select VLYNQ
>> 223 help
>> 224 Support for the Texas Instruments AR7 System-on-a-Chip
>> 225 family: TNETD7100, 7200 and 7300.
>> 226
>> 227 config ATH25
>> 228 bool "Atheros AR231x/AR531x SoC support"
>> 229 select CEVT_R4K
>> 230 select CSRC_R4K
>> 231 select DMA_NONCOHERENT
>> 232 select IRQ_MIPS_CPU
>> 233 select IRQ_DOMAIN
>> 234 select SYS_HAS_CPU_MIPS32_R1
>> 235 select SYS_SUPPORTS_BIG_ENDIAN
>> 236 select SYS_SUPPORTS_32BIT_KERNEL
>> 237 select SYS_HAS_EARLY_PRINTK
>> 238 help
>> 239 Support for Atheros AR231x and Atheros AR531x based boards
>> 240
>> 241 config ATH79
>> 242 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 243 select ARCH_HAS_RESET_CONTROLLER
>> 244 select BOOT_RAW
>> 245 select CEVT_R4K
>> 246 select CSRC_R4K
>> 247 select DMA_NONCOHERENT
>> 248 select GPIOLIB
>> 249 select PINCTRL
>> 250 select COMMON_CLK
>> 251 select IRQ_MIPS_CPU
>> 252 select SYS_HAS_CPU_MIPS32_R2
>> 253 select SYS_HAS_EARLY_PRINTK
>> 254 select SYS_SUPPORTS_32BIT_KERNEL
>> 255 select SYS_SUPPORTS_BIG_ENDIAN
>> 256 select SYS_SUPPORTS_MIPS16
>> 257 select SYS_SUPPORTS_ZBOOT_UART_PROM
>> 258 select USE_OF
>> 259 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
>> 260 help
>> 261 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 262
>> 263 config BMIPS_GENERIC
>> 264 bool "Broadcom Generic BMIPS kernel"
>> 265 select ARCH_HAS_RESET_CONTROLLER
>> 266 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
>> 267 select BOOT_RAW
>> 268 select NO_EXCEPT_FILL
>> 269 select USE_OF
>> 270 select CEVT_R4K
>> 271 select CSRC_R4K
>> 272 select SYNC_R4K
>> 273 select COMMON_CLK
>> 274 select BCM6345_L1_IRQ
>> 275 select BCM7038_L1_IRQ
>> 276 select BCM7120_L2_IRQ
>> 277 select BRCMSTB_L2_IRQ
>> 278 select IRQ_MIPS_CPU
>> 279 select DMA_NONCOHERENT
>> 280 select SYS_SUPPORTS_32BIT_KERNEL
>> 281 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 282 select SYS_SUPPORTS_BIG_ENDIAN
>> 283 select SYS_SUPPORTS_HIGHMEM
>> 284 select SYS_HAS_CPU_BMIPS32_3300
>> 285 select SYS_HAS_CPU_BMIPS4350
>> 286 select SYS_HAS_CPU_BMIPS4380
>> 287 select SYS_HAS_CPU_BMIPS5000
>> 288 select SWAP_IO_SPACE
>> 289 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 290 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 291 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 292 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 293 select HARDIRQS_SW_RESEND
>> 294 select HAVE_PCI
>> 295 select PCI_DRIVERS_GENERIC
>> 296 select FW_CFE
>> 297 help
>> 298 Build a generic DT-based kernel image that boots on select
>> 299 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
>> 300 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
>> 301 must be set appropriately for your board.
>> 302
>> 303 config BCM47XX
>> 304 bool "Broadcom BCM47XX based boards"
>> 305 select BOOT_RAW
>> 306 select CEVT_R4K
>> 307 select CSRC_R4K
>> 308 select DMA_NONCOHERENT
>> 309 select HAVE_PCI
>> 310 select IRQ_MIPS_CPU
>> 311 select SYS_HAS_CPU_MIPS32_R1
>> 312 select NO_EXCEPT_FILL
>> 313 select SYS_SUPPORTS_32BIT_KERNEL
>> 314 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 315 select SYS_SUPPORTS_MIPS16
>> 316 select SYS_SUPPORTS_ZBOOT
>> 317 select SYS_HAS_EARLY_PRINTK
>> 318 select USE_GENERIC_EARLY_PRINTK_8250
>> 319 select GPIOLIB
>> 320 select LEDS_GPIO_REGISTER
>> 321 select BCM47XX_NVRAM
>> 322 select BCM47XX_SPROM
>> 323 select BCM47XX_SSB if !BCM47XX_BCMA
>> 324 help
>> 325 Support for BCM47XX based boards
>> 326
>> 327 config BCM63XX
>> 328 bool "Broadcom BCM63XX based boards"
>> 329 select BOOT_RAW
>> 330 select CEVT_R4K
>> 331 select CSRC_R4K
>> 332 select SYNC_R4K
>> 333 select DMA_NONCOHERENT
>> 334 select IRQ_MIPS_CPU
>> 335 select SYS_SUPPORTS_32BIT_KERNEL
>> 336 select SYS_SUPPORTS_BIG_ENDIAN
>> 337 select SYS_HAS_EARLY_PRINTK
>> 338 select SYS_HAS_CPU_BMIPS32_3300
>> 339 select SYS_HAS_CPU_BMIPS4350
>> 340 select SYS_HAS_CPU_BMIPS4380
>> 341 select SWAP_IO_SPACE
>> 342 select GPIOLIB
>> 343 select MIPS_L1_CACHE_SHIFT_4
>> 344 select HAVE_LEGACY_CLK
>> 345 help
>> 346 Support for BCM63XX based boards
>> 347
>> 348 config MIPS_COBALT
>> 349 bool "Cobalt Server"
>> 350 select CEVT_R4K
>> 351 select CSRC_R4K
>> 352 select CEVT_GT641XX
>> 353 select DMA_NONCOHERENT
>> 354 select FORCE_PCI
>> 355 select I8253
>> 356 select I8259
>> 357 select IRQ_MIPS_CPU
>> 358 select IRQ_GT641XX
>> 359 select PCI_GT64XXX_PCI0
>> 360 select SYS_HAS_CPU_NEVADA
>> 361 select SYS_HAS_EARLY_PRINTK
>> 362 select SYS_SUPPORTS_32BIT_KERNEL
>> 363 select SYS_SUPPORTS_64BIT_KERNEL
>> 364 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 365 select USE_GENERIC_EARLY_PRINTK_8250
>> 366
>> 367 config MACH_DECSTATION
>> 368 bool "DECstations"
>> 369 select BOOT_ELF32
>> 370 select CEVT_DS1287
>> 371 select CEVT_R4K if CPU_R4X00
>> 372 select CSRC_IOASIC
>> 373 select CSRC_R4K if CPU_R4X00
>> 374 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 375 select CPU_R4000_WORKAROUNDS if 64BIT
>> 376 select CPU_R4400_WORKAROUNDS if 64BIT
>> 377 select DMA_NONCOHERENT
>> 378 select NO_IOPORT_MAP
>> 379 select IRQ_MIPS_CPU
>> 380 select SYS_HAS_CPU_R3000
>> 381 select SYS_HAS_CPU_R4X00
>> 382 select SYS_SUPPORTS_32BIT_KERNEL
>> 383 select SYS_SUPPORTS_64BIT_KERNEL
>> 384 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 385 select SYS_SUPPORTS_128HZ
>> 386 select SYS_SUPPORTS_256HZ
>> 387 select SYS_SUPPORTS_1024HZ
>> 388 select MIPS_L1_CACHE_SHIFT_4
>> 389 help
>> 390 This enables support for DEC's MIPS based workstations. For details
>> 391 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 392 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 393
>> 394 If you have one of the following DECstation Models you definitely
>> 395 want to choose R4xx0 for the CPU Type:
>> 396
>> 397 DECstation 5000/50
>> 398 DECstation 5000/150
>> 399 DECstation 5000/260
>> 400 DECsystem 5900/260
>> 401
>> 402 otherwise choose R3000.
>> 403
>> 404 config MACH_JAZZ
>> 405 bool "Jazz family of machines"
>> 406 select ARC_MEMORY
>> 407 select ARC_PROMLIB
>> 408 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 409 select ARCH_MIGHT_HAVE_PC_SERIO
>> 410 select DMA_OPS
>> 411 select FW_ARC
>> 412 select FW_ARC32
>> 413 select ARCH_MAY_HAVE_PC_FDC
>> 414 select CEVT_R4K
>> 415 select CSRC_R4K
>> 416 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 417 select GENERIC_ISA_DMA
>> 418 select HAVE_PCSPKR_PLATFORM
>> 419 select IRQ_MIPS_CPU
>> 420 select I8253
>> 421 select I8259
>> 422 select ISA
>> 423 select SYS_HAS_CPU_R4X00
>> 424 select SYS_SUPPORTS_32BIT_KERNEL
>> 425 select SYS_SUPPORTS_64BIT_KERNEL
>> 426 select SYS_SUPPORTS_100HZ
>> 427 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 428 help
>> 429 This a family of machines based on the MIPS R4030 chipset which was
>> 430 used by several vendors to build RISC/os and Windows NT workstations.
>> 431 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 432 Olivetti M700-10 workstations.
>> 433
>> 434 config MACH_INGENIC_SOC
>> 435 bool "Ingenic SoC based machines"
>> 436 select MIPS_GENERIC
>> 437 select MACH_INGENIC
>> 438 select SYS_SUPPORTS_ZBOOT_UART16550
>> 439 select CPU_SUPPORTS_CPUFREQ
>> 440 select MIPS_EXTERNAL_TIMER
>> 441
>> 442 config LANTIQ
>> 443 bool "Lantiq based platforms"
>> 444 select DMA_NONCOHERENT
>> 445 select IRQ_MIPS_CPU
>> 446 select CEVT_R4K
>> 447 select CSRC_R4K
>> 448 select SYS_HAS_CPU_MIPS32_R1
>> 449 select SYS_HAS_CPU_MIPS32_R2
>> 450 select SYS_SUPPORTS_BIG_ENDIAN
>> 451 select SYS_SUPPORTS_32BIT_KERNEL
>> 452 select SYS_SUPPORTS_MIPS16
>> 453 select SYS_SUPPORTS_MULTITHREADING
>> 454 select SYS_SUPPORTS_VPE_LOADER
>> 455 select SYS_HAS_EARLY_PRINTK
>> 456 select GPIOLIB
>> 457 select SWAP_IO_SPACE
>> 458 select BOOT_RAW
>> 459 select HAVE_LEGACY_CLK
>> 460 select USE_OF
>> 461 select PINCTRL
>> 462 select PINCTRL_LANTIQ
>> 463 select ARCH_HAS_RESET_CONTROLLER
>> 464 select RESET_CONTROLLER
>> 465
>> 466 config MACH_LOONGSON32
>> 467 bool "Loongson 32-bit family of machines"
>> 468 select SYS_SUPPORTS_ZBOOT
>> 469 help
>> 470 This enables support for the Loongson-1 family of machines.
>> 471
>> 472 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 473 the Institute of Computing Technology (ICT), Chinese Academy of
>> 474 Sciences (CAS).
>> 475
>> 476 config MACH_LOONGSON2EF
>> 477 bool "Loongson-2E/F family of machines"
>> 478 select SYS_SUPPORTS_ZBOOT
>> 479 help
>> 480 This enables the support of early Loongson-2E/F family of machines.
>> 481
>> 482 config MACH_LOONGSON64
>> 483 bool "Loongson 64-bit family of machines"
>> 484 select ARCH_SPARSEMEM_ENABLE
>> 485 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 486 select ARCH_MIGHT_HAVE_PC_SERIO
>> 487 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 488 select BOOT_ELF32
>> 489 select BOARD_SCACHE
>> 490 select CSRC_R4K
>> 491 select CEVT_R4K
>> 492 select CPU_HAS_WB
>> 493 select FORCE_PCI
>> 494 select ISA
>> 495 select I8259
>> 496 select IRQ_MIPS_CPU
>> 497 select NO_EXCEPT_FILL
>> 498 select NR_CPUS_DEFAULT_64
>> 499 select USE_GENERIC_EARLY_PRINTK_8250
>> 500 select PCI_DRIVERS_GENERIC
>> 501 select SYS_HAS_CPU_LOONGSON64
>> 502 select SYS_HAS_EARLY_PRINTK
>> 503 select SYS_SUPPORTS_SMP
>> 504 select SYS_SUPPORTS_HOTPLUG_CPU
>> 505 select SYS_SUPPORTS_NUMA
>> 506 select SYS_SUPPORTS_64BIT_KERNEL
>> 507 select SYS_SUPPORTS_HIGHMEM
>> 508 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 509 select SYS_SUPPORTS_ZBOOT
>> 510 select SYS_SUPPORTS_RELOCATABLE
>> 511 select ZONE_DMA32
>> 512 select COMMON_CLK
>> 513 select USE_OF
>> 514 select BUILTIN_DTB
>> 515 select PCI_HOST_GENERIC
>> 516 select HAVE_ARCH_NODEDATA_EXTENSION if NUMA
>> 517 help
>> 518 This enables the support of Loongson-2/3 family of machines.
>> 519
>> 520 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
>> 521 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
>> 522 and Loongson-2F which will be removed), developed by the Institute
>> 523 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
>> 524
>> 525 config MIPS_MALTA
>> 526 bool "MIPS Malta board"
>> 527 select ARCH_MAY_HAVE_PC_FDC
>> 528 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 529 select ARCH_MIGHT_HAVE_PC_SERIO
>> 530 select BOOT_ELF32
>> 531 select BOOT_RAW
>> 532 select BUILTIN_DTB
>> 533 select CEVT_R4K
>> 534 select CLKSRC_MIPS_GIC
>> 535 select COMMON_CLK
>> 536 select CSRC_R4K
>> 537 select DMA_NONCOHERENT
>> 538 select GENERIC_ISA_DMA
>> 539 select HAVE_PCSPKR_PLATFORM
>> 540 select HAVE_PCI
>> 541 select I8253
>> 542 select I8259
>> 543 select IRQ_MIPS_CPU
>> 544 select MIPS_BONITO64
>> 545 select MIPS_CPU_SCACHE
>> 546 select MIPS_GIC
>> 547 select MIPS_L1_CACHE_SHIFT_6
>> 548 select MIPS_MSC
>> 549 select PCI_GT64XXX_PCI0
>> 550 select SMP_UP if SMP
>> 551 select SWAP_IO_SPACE
>> 552 select SYS_HAS_CPU_MIPS32_R1
>> 553 select SYS_HAS_CPU_MIPS32_R2
>> 554 select SYS_HAS_CPU_MIPS32_R3_5
>> 555 select SYS_HAS_CPU_MIPS32_R5
>> 556 select SYS_HAS_CPU_MIPS32_R6
>> 557 select SYS_HAS_CPU_MIPS64_R1
>> 558 select SYS_HAS_CPU_MIPS64_R2
>> 559 select SYS_HAS_CPU_MIPS64_R6
>> 560 select SYS_HAS_CPU_NEVADA
>> 561 select SYS_HAS_CPU_RM7000
>> 562 select SYS_SUPPORTS_32BIT_KERNEL
>> 563 select SYS_SUPPORTS_64BIT_KERNEL
>> 564 select SYS_SUPPORTS_BIG_ENDIAN
>> 565 select SYS_SUPPORTS_HIGHMEM
>> 566 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 567 select SYS_SUPPORTS_MICROMIPS
>> 568 select SYS_SUPPORTS_MIPS16
>> 569 select SYS_SUPPORTS_MIPS_CMP
>> 570 select SYS_SUPPORTS_MIPS_CPS
>> 571 select SYS_SUPPORTS_MULTITHREADING
>> 572 select SYS_SUPPORTS_RELOCATABLE
>> 573 select SYS_SUPPORTS_SMARTMIPS
>> 574 select SYS_SUPPORTS_VPE_LOADER
>> 575 select SYS_SUPPORTS_ZBOOT
>> 576 select USE_OF
>> 577 select WAR_ICACHE_REFILLS
210 select ZONE_DMA32 if 64BIT 578 select ZONE_DMA32 if 64BIT
>> 579 help
>> 580 This enables support for the MIPS Technologies Malta evaluation
>> 581 board.
211 582
212 config RUSTC_SUPPORTS_RISCV !! 583 config MACH_PIC32
213 def_bool y !! 584 bool "Microchip PIC32 Family"
214 depends on 64BIT !! 585 help
215 # Shadow call stack requires rustc ver !! 586 This enables support for the Microchip PIC32 family of platforms.
216 # -Zsanitizer=shadow-call-stack flag. <<
217 depends on !SHADOW_CALL_STACK || RUSTC <<
218 <<
219 config CLANG_SUPPORTS_DYNAMIC_FTRACE <<
220 def_bool CC_IS_CLANG <<
221 # https://github.com/ClangBuiltLinux/l <<
222 depends on AS_IS_GNU || (AS_IS_LLVM && <<
223 <<
224 config GCC_SUPPORTS_DYNAMIC_FTRACE <<
225 def_bool CC_IS_GCC <<
226 depends on $(cc-option,-fpatchable-fun <<
227 <<
228 config HAVE_SHADOW_CALL_STACK <<
229 def_bool $(cc-option,-fsanitize=shadow <<
230 # https://github.com/riscv-non-isa/ris <<
231 depends on $(ld-option,--no-relax-gp) <<
232 587
233 config RISCV_USE_LINKER_RELAXATION !! 588 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
234 def_bool y !! 589 microcontrollers.
235 # https://github.com/llvm/llvm-project !! 590
236 depends on !LD_IS_LLD || LLD_VERSION > !! 591 config MACH_NINTENDO64
>> 592 bool "Nintendo 64 console"
>> 593 select CEVT_R4K
>> 594 select CSRC_R4K
>> 595 select SYS_HAS_CPU_R4300
>> 596 select SYS_SUPPORTS_BIG_ENDIAN
>> 597 select SYS_SUPPORTS_ZBOOT
>> 598 select SYS_SUPPORTS_32BIT_KERNEL
>> 599 select SYS_SUPPORTS_64BIT_KERNEL
>> 600 select DMA_NONCOHERENT
>> 601 select IRQ_MIPS_CPU
>> 602
>> 603 config RALINK
>> 604 bool "Ralink based machines"
>> 605 select CEVT_R4K
>> 606 select COMMON_CLK
>> 607 select CSRC_R4K
>> 608 select BOOT_RAW
>> 609 select DMA_NONCOHERENT
>> 610 select IRQ_MIPS_CPU
>> 611 select USE_OF
>> 612 select SYS_HAS_CPU_MIPS32_R1
>> 613 select SYS_HAS_CPU_MIPS32_R2
>> 614 select SYS_SUPPORTS_32BIT_KERNEL
>> 615 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 616 select SYS_SUPPORTS_MIPS16
>> 617 select SYS_SUPPORTS_ZBOOT
>> 618 select SYS_HAS_EARLY_PRINTK
>> 619 select ARCH_HAS_RESET_CONTROLLER
>> 620 select RESET_CONTROLLER
>> 621
>> 622 config MACH_REALTEK_RTL
>> 623 bool "Realtek RTL838x/RTL839x based machines"
>> 624 select MIPS_GENERIC
>> 625 select DMA_NONCOHERENT
>> 626 select IRQ_MIPS_CPU
>> 627 select CSRC_R4K
>> 628 select CEVT_R4K
>> 629 select SYS_HAS_CPU_MIPS32_R1
>> 630 select SYS_HAS_CPU_MIPS32_R2
>> 631 select SYS_SUPPORTS_BIG_ENDIAN
>> 632 select SYS_SUPPORTS_32BIT_KERNEL
>> 633 select SYS_SUPPORTS_MIPS16
>> 634 select SYS_SUPPORTS_MULTITHREADING
>> 635 select SYS_SUPPORTS_VPE_LOADER
>> 636 select BOOT_RAW
>> 637 select PINCTRL
>> 638 select USE_OF
>> 639
>> 640 config SGI_IP22
>> 641 bool "SGI IP22 (Indy/Indigo2)"
>> 642 select ARC_MEMORY
>> 643 select ARC_PROMLIB
>> 644 select FW_ARC
>> 645 select FW_ARC32
>> 646 select ARCH_MIGHT_HAVE_PC_SERIO
>> 647 select BOOT_ELF32
>> 648 select CEVT_R4K
>> 649 select CSRC_R4K
>> 650 select DEFAULT_SGI_PARTITION
>> 651 select DMA_NONCOHERENT
>> 652 select HAVE_EISA
>> 653 select I8253
>> 654 select I8259
>> 655 select IP22_CPU_SCACHE
>> 656 select IRQ_MIPS_CPU
>> 657 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 658 select SGI_HAS_I8042
>> 659 select SGI_HAS_INDYDOG
>> 660 select SGI_HAS_HAL2
>> 661 select SGI_HAS_SEEQ
>> 662 select SGI_HAS_WD93
>> 663 select SGI_HAS_ZILOG
>> 664 select SWAP_IO_SPACE
>> 665 select SYS_HAS_CPU_R4X00
>> 666 select SYS_HAS_CPU_R5000
>> 667 select SYS_HAS_EARLY_PRINTK
>> 668 select SYS_SUPPORTS_32BIT_KERNEL
>> 669 select SYS_SUPPORTS_64BIT_KERNEL
>> 670 select SYS_SUPPORTS_BIG_ENDIAN
>> 671 select WAR_R4600_V1_INDEX_ICACHEOP
>> 672 select WAR_R4600_V1_HIT_CACHEOP
>> 673 select WAR_R4600_V2_HIT_CACHEOP
>> 674 select MIPS_L1_CACHE_SHIFT_7
>> 675 help
>> 676 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 677 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 678 that runs on these, say Y here.
>> 679
>> 680 config SGI_IP27
>> 681 bool "SGI IP27 (Origin200/2000)"
>> 682 select ARCH_HAS_PHYS_TO_DMA
>> 683 select ARCH_SPARSEMEM_ENABLE
>> 684 select FW_ARC
>> 685 select FW_ARC64
>> 686 select ARC_CMDLINE_ONLY
>> 687 select BOOT_ELF64
>> 688 select DEFAULT_SGI_PARTITION
>> 689 select FORCE_PCI
>> 690 select SYS_HAS_EARLY_PRINTK
>> 691 select HAVE_PCI
>> 692 select IRQ_MIPS_CPU
>> 693 select IRQ_DOMAIN_HIERARCHY
>> 694 select NR_CPUS_DEFAULT_64
>> 695 select PCI_DRIVERS_GENERIC
>> 696 select PCI_XTALK_BRIDGE
>> 697 select SYS_HAS_CPU_R10000
>> 698 select SYS_SUPPORTS_64BIT_KERNEL
>> 699 select SYS_SUPPORTS_BIG_ENDIAN
>> 700 select SYS_SUPPORTS_NUMA
>> 701 select SYS_SUPPORTS_SMP
>> 702 select WAR_R10000_LLSC
>> 703 select MIPS_L1_CACHE_SHIFT_7
>> 704 select NUMA
>> 705 select HAVE_ARCH_NODEDATA_EXTENSION
>> 706 help
>> 707 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 708 workstations. To compile a Linux kernel that runs on these, say Y
>> 709 here.
237 710
238 # https://github.com/llvm/llvm-project/commit/ !! 711 config SGI_IP28
239 config ARCH_HAS_BROKEN_DWARF5 !! 712 bool "SGI IP28 (Indigo2 R10k)"
240 def_bool y !! 713 select ARC_MEMORY
241 depends on RISCV_USE_LINKER_RELAXATION !! 714 select ARC_PROMLIB
242 # https://github.com/llvm/llvm-project !! 715 select FW_ARC
243 depends on AS_IS_LLVM && AS_VERSION < !! 716 select FW_ARC64
244 # https://github.com/llvm/llvm-project !! 717 select ARCH_MIGHT_HAVE_PC_SERIO
245 depends on LD_IS_LLD && LLD_VERSION < !! 718 select BOOT_ELF64
>> 719 select CEVT_R4K
>> 720 select CSRC_R4K
>> 721 select DEFAULT_SGI_PARTITION
>> 722 select DMA_NONCOHERENT
>> 723 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 724 select IRQ_MIPS_CPU
>> 725 select HAVE_EISA
>> 726 select I8253
>> 727 select I8259
>> 728 select SGI_HAS_I8042
>> 729 select SGI_HAS_INDYDOG
>> 730 select SGI_HAS_HAL2
>> 731 select SGI_HAS_SEEQ
>> 732 select SGI_HAS_WD93
>> 733 select SGI_HAS_ZILOG
>> 734 select SWAP_IO_SPACE
>> 735 select SYS_HAS_CPU_R10000
>> 736 select SYS_HAS_EARLY_PRINTK
>> 737 select SYS_SUPPORTS_64BIT_KERNEL
>> 738 select SYS_SUPPORTS_BIG_ENDIAN
>> 739 select WAR_R10000_LLSC
>> 740 select MIPS_L1_CACHE_SHIFT_7
>> 741 help
>> 742 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 743 kernel that runs on these, say Y here.
>> 744
>> 745 config SGI_IP30
>> 746 bool "SGI IP30 (Octane/Octane2)"
>> 747 select ARCH_HAS_PHYS_TO_DMA
>> 748 select FW_ARC
>> 749 select FW_ARC64
>> 750 select BOOT_ELF64
>> 751 select CEVT_R4K
>> 752 select CSRC_R4K
>> 753 select FORCE_PCI
>> 754 select SYNC_R4K if SMP
>> 755 select ZONE_DMA32
>> 756 select HAVE_PCI
>> 757 select IRQ_MIPS_CPU
>> 758 select IRQ_DOMAIN_HIERARCHY
>> 759 select PCI_DRIVERS_GENERIC
>> 760 select PCI_XTALK_BRIDGE
>> 761 select SYS_HAS_EARLY_PRINTK
>> 762 select SYS_HAS_CPU_R10000
>> 763 select SYS_SUPPORTS_64BIT_KERNEL
>> 764 select SYS_SUPPORTS_BIG_ENDIAN
>> 765 select SYS_SUPPORTS_SMP
>> 766 select WAR_R10000_LLSC
>> 767 select MIPS_L1_CACHE_SHIFT_7
>> 768 select ARC_MEMORY
>> 769 help
>> 770 These are the SGI Octane and Octane2 graphics workstations. To
>> 771 compile a Linux kernel that runs on these, say Y here.
>> 772
>> 773 config SGI_IP32
>> 774 bool "SGI IP32 (O2)"
>> 775 select ARC_MEMORY
>> 776 select ARC_PROMLIB
>> 777 select ARCH_HAS_PHYS_TO_DMA
>> 778 select FW_ARC
>> 779 select FW_ARC32
>> 780 select BOOT_ELF32
>> 781 select CEVT_R4K
>> 782 select CSRC_R4K
>> 783 select DMA_NONCOHERENT
>> 784 select HAVE_PCI
>> 785 select IRQ_MIPS_CPU
>> 786 select R5000_CPU_SCACHE
>> 787 select RM7000_CPU_SCACHE
>> 788 select SYS_HAS_CPU_R5000
>> 789 select SYS_HAS_CPU_R10000 if BROKEN
>> 790 select SYS_HAS_CPU_RM7000
>> 791 select SYS_HAS_CPU_NEVADA
>> 792 select SYS_SUPPORTS_64BIT_KERNEL
>> 793 select SYS_SUPPORTS_BIG_ENDIAN
>> 794 select WAR_ICACHE_REFILLS
>> 795 help
>> 796 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 797
>> 798 config SIBYTE_CRHINE
>> 799 bool "Sibyte BCM91120C-CRhine"
>> 800 select BOOT_ELF32
>> 801 select SIBYTE_BCM1120
>> 802 select SWAP_IO_SPACE
>> 803 select SYS_HAS_CPU_SB1
>> 804 select SYS_SUPPORTS_BIG_ENDIAN
>> 805 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 806
>> 807 config SIBYTE_CARMEL
>> 808 bool "Sibyte BCM91120x-Carmel"
>> 809 select BOOT_ELF32
>> 810 select SIBYTE_BCM1120
>> 811 select SWAP_IO_SPACE
>> 812 select SYS_HAS_CPU_SB1
>> 813 select SYS_SUPPORTS_BIG_ENDIAN
>> 814 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 815
>> 816 config SIBYTE_CRHONE
>> 817 bool "Sibyte BCM91125C-CRhone"
>> 818 select BOOT_ELF32
>> 819 select SIBYTE_BCM1125
>> 820 select SWAP_IO_SPACE
>> 821 select SYS_HAS_CPU_SB1
>> 822 select SYS_SUPPORTS_BIG_ENDIAN
>> 823 select SYS_SUPPORTS_HIGHMEM
>> 824 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 825
>> 826 config SIBYTE_RHONE
>> 827 bool "Sibyte BCM91125E-Rhone"
>> 828 select BOOT_ELF32
>> 829 select SIBYTE_BCM1125H
>> 830 select SWAP_IO_SPACE
>> 831 select SYS_HAS_CPU_SB1
>> 832 select SYS_SUPPORTS_BIG_ENDIAN
>> 833 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 834
>> 835 config SIBYTE_SWARM
>> 836 bool "Sibyte BCM91250A-SWARM"
>> 837 select BOOT_ELF32
>> 838 select HAVE_PATA_PLATFORM
>> 839 select SIBYTE_SB1250
>> 840 select SWAP_IO_SPACE
>> 841 select SYS_HAS_CPU_SB1
>> 842 select SYS_SUPPORTS_BIG_ENDIAN
>> 843 select SYS_SUPPORTS_HIGHMEM
>> 844 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 845 select ZONE_DMA32 if 64BIT
>> 846 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
246 847
247 config ARCH_MMAP_RND_BITS_MIN !! 848 config SIBYTE_LITTLESUR
248 default 18 if 64BIT !! 849 bool "Sibyte BCM91250C2-LittleSur"
249 default 8 !! 850 select BOOT_ELF32
>> 851 select HAVE_PATA_PLATFORM
>> 852 select SIBYTE_SB1250
>> 853 select SWAP_IO_SPACE
>> 854 select SYS_HAS_CPU_SB1
>> 855 select SYS_SUPPORTS_BIG_ENDIAN
>> 856 select SYS_SUPPORTS_HIGHMEM
>> 857 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 858 select ZONE_DMA32 if 64BIT
250 859
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 860 config SIBYTE_SENTOSA
252 default 8 !! 861 bool "Sibyte BCM91250E-Sentosa"
>> 862 select BOOT_ELF32
>> 863 select SIBYTE_SB1250
>> 864 select SWAP_IO_SPACE
>> 865 select SYS_HAS_CPU_SB1
>> 866 select SYS_SUPPORTS_BIG_ENDIAN
>> 867 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 868 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
>> 869
>> 870 config SIBYTE_BIGSUR
>> 871 bool "Sibyte BCM91480B-BigSur"
>> 872 select BOOT_ELF32
>> 873 select NR_CPUS_DEFAULT_4
>> 874 select SIBYTE_BCM1x80
>> 875 select SWAP_IO_SPACE
>> 876 select SYS_HAS_CPU_SB1
>> 877 select SYS_SUPPORTS_BIG_ENDIAN
>> 878 select SYS_SUPPORTS_HIGHMEM
>> 879 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 880 select ZONE_DMA32 if 64BIT
>> 881 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
253 882
254 # max bits determined by the following formula !! 883 config SNI_RM
255 # VA_BITS - PAGE_SHIFT - 3 !! 884 bool "SNI RM200/300/400"
256 config ARCH_MMAP_RND_BITS_MAX !! 885 select ARC_MEMORY
257 default 24 if 64BIT # SV39 based !! 886 select ARC_PROMLIB
258 default 17 !! 887 select FW_ARC if CPU_LITTLE_ENDIAN
>> 888 select FW_ARC32 if CPU_LITTLE_ENDIAN
>> 889 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 890 select ARCH_MAY_HAVE_PC_FDC
>> 891 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 892 select ARCH_MIGHT_HAVE_PC_SERIO
>> 893 select BOOT_ELF32
>> 894 select CEVT_R4K
>> 895 select CSRC_R4K
>> 896 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 897 select DMA_NONCOHERENT
>> 898 select GENERIC_ISA_DMA
>> 899 select HAVE_EISA
>> 900 select HAVE_PCSPKR_PLATFORM
>> 901 select HAVE_PCI
>> 902 select IRQ_MIPS_CPU
>> 903 select I8253
>> 904 select I8259
>> 905 select ISA
>> 906 select MIPS_L1_CACHE_SHIFT_6
>> 907 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 908 select SYS_HAS_CPU_R4X00
>> 909 select SYS_HAS_CPU_R5000
>> 910 select SYS_HAS_CPU_R10000
>> 911 select R5000_CPU_SCACHE
>> 912 select SYS_HAS_EARLY_PRINTK
>> 913 select SYS_SUPPORTS_32BIT_KERNEL
>> 914 select SYS_SUPPORTS_64BIT_KERNEL
>> 915 select SYS_SUPPORTS_BIG_ENDIAN
>> 916 select SYS_SUPPORTS_HIGHMEM
>> 917 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 918 select WAR_R4600_V2_HIT_CACHEOP
>> 919 help
>> 920 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 921 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 922 Technology and now in turn merged with Fujitsu. Say Y here to
>> 923 support this machine type.
>> 924
>> 925 config MACH_TX49XX
>> 926 bool "Toshiba TX49 series based machines"
>> 927 select WAR_TX49XX_ICACHE_INDEX_INV
>> 928
>> 929 config MIKROTIK_RB532
>> 930 bool "Mikrotik RB532 boards"
>> 931 select CEVT_R4K
>> 932 select CSRC_R4K
>> 933 select DMA_NONCOHERENT
>> 934 select HAVE_PCI
>> 935 select IRQ_MIPS_CPU
>> 936 select SYS_HAS_CPU_MIPS32_R1
>> 937 select SYS_SUPPORTS_32BIT_KERNEL
>> 938 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 939 select SWAP_IO_SPACE
>> 940 select BOOT_RAW
>> 941 select GPIOLIB
>> 942 select MIPS_L1_CACHE_SHIFT_4
>> 943 help
>> 944 Support the Mikrotik(tm) RouterBoard 532 series,
>> 945 based on the IDT RC32434 SoC.
>> 946
>> 947 config CAVIUM_OCTEON_SOC
>> 948 bool "Cavium Networks Octeon SoC based boards"
>> 949 select CEVT_R4K
>> 950 select ARCH_HAS_PHYS_TO_DMA
>> 951 select HAVE_RAPIDIO
>> 952 select PHYS_ADDR_T_64BIT
>> 953 select SYS_SUPPORTS_64BIT_KERNEL
>> 954 select SYS_SUPPORTS_BIG_ENDIAN
>> 955 select EDAC_SUPPORT
>> 956 select EDAC_ATOMIC_SCRUB
>> 957 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 958 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
>> 959 select SYS_HAS_EARLY_PRINTK
>> 960 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 961 select HAVE_PCI
>> 962 select HAVE_PLAT_DELAY
>> 963 select HAVE_PLAT_FW_INIT_CMDLINE
>> 964 select HAVE_PLAT_MEMCPY
>> 965 select ZONE_DMA32
>> 966 select GPIOLIB
>> 967 select USE_OF
>> 968 select ARCH_SPARSEMEM_ENABLE
>> 969 select SYS_SUPPORTS_SMP
>> 970 select NR_CPUS_DEFAULT_64
>> 971 select MIPS_NR_CPU_NR_MAP_1024
>> 972 select BUILTIN_DTB
>> 973 select MTD
>> 974 select MTD_COMPLEX_MAPPINGS
>> 975 select SWIOTLB
>> 976 select SYS_SUPPORTS_RELOCATABLE
>> 977 help
>> 978 This option supports all of the Octeon reference boards from Cavium
>> 979 Networks. It builds a kernel that dynamically determines the Octeon
>> 980 CPU type and supports all known board reference implementations.
>> 981 Some of the supported boards are:
>> 982 EBT3000
>> 983 EBH3000
>> 984 EBH3100
>> 985 Thunder
>> 986 Kodama
>> 987 Hikari
>> 988 Say Y here for most Octeon reference boards.
259 989
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 990 endchoice
261 default 17 <<
262 991
263 # set if we run in machine mode, cleared if we !! 992 source "arch/mips/alchemy/Kconfig"
264 config RISCV_M_MODE !! 993 source "arch/mips/ath25/Kconfig"
265 bool "Build a kernel that runs in mach !! 994 source "arch/mips/ath79/Kconfig"
266 depends on !MMU !! 995 source "arch/mips/bcm47xx/Kconfig"
>> 996 source "arch/mips/bcm63xx/Kconfig"
>> 997 source "arch/mips/bmips/Kconfig"
>> 998 source "arch/mips/generic/Kconfig"
>> 999 source "arch/mips/ingenic/Kconfig"
>> 1000 source "arch/mips/jazz/Kconfig"
>> 1001 source "arch/mips/lantiq/Kconfig"
>> 1002 source "arch/mips/pic32/Kconfig"
>> 1003 source "arch/mips/ralink/Kconfig"
>> 1004 source "arch/mips/sgi-ip27/Kconfig"
>> 1005 source "arch/mips/sibyte/Kconfig"
>> 1006 source "arch/mips/txx9/Kconfig"
>> 1007 source "arch/mips/cavium-octeon/Kconfig"
>> 1008 source "arch/mips/loongson2ef/Kconfig"
>> 1009 source "arch/mips/loongson32/Kconfig"
>> 1010 source "arch/mips/loongson64/Kconfig"
>> 1011
>> 1012 endmenu
>> 1013
>> 1014 config GENERIC_HWEIGHT
>> 1015 bool
267 default y 1016 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 1017
272 # set if we are running in S-mode and can use !! 1018 config GENERIC_CALIBRATE_DELAY
273 config RISCV_SBI <<
274 bool 1019 bool
275 depends on !RISCV_M_MODE <<
276 default y 1020 default y
277 1021
278 config MMU !! 1022 config SCHED_OMIT_FRAME_POINTER
279 bool "MMU-based Paged Memory Managemen !! 1023 bool
280 default y 1024 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 1025
285 config PAGE_OFFSET !! 1026 #
286 hex !! 1027 # Select some configuration options automatically based on user selections.
287 default 0x80000000 if !MMU && RISCV_M_ !! 1028 #
288 default 0x80200000 if !MMU !! 1029 config FW_ARC
289 default 0xc0000000 if 32BIT !! 1030 bool
290 default 0xff60000000000000 if 64BIT <<
291 <<
292 config KASAN_SHADOW_OFFSET <<
293 hex <<
294 depends on KASAN_GENERIC <<
295 default 0xdfffffff00000000 if 64BIT <<
296 default 0xffffffff if 32BIT <<
297 1031
298 config ARCH_FLATMEM_ENABLE !! 1032 config ARCH_MAY_HAVE_PC_FDC
299 def_bool !NUMA !! 1033 bool
300 1034
301 config ARCH_SPARSEMEM_ENABLE !! 1035 config BOOT_RAW
302 def_bool y !! 1036 bool
303 depends on MMU <<
304 select SPARSEMEM_STATIC if 32BIT && SP <<
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B <<
306 1037
307 config ARCH_SELECT_MEMORY_MODEL !! 1038 config CEVT_BCM1480
308 def_bool ARCH_SPARSEMEM_ENABLE !! 1039 bool
309 1040
310 config ARCH_SUPPORTS_UPROBES !! 1041 config CEVT_DS1287
311 def_bool y !! 1042 bool
312 1043
313 config STACKTRACE_SUPPORT !! 1044 config CEVT_GT641XX
314 def_bool y !! 1045 bool
315 1046
316 config GENERIC_BUG !! 1047 config CEVT_R4K
317 def_bool y !! 1048 bool
318 depends on BUG <<
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 1049
321 config GENERIC_BUG_RELATIVE_POINTERS !! 1050 config CEVT_SB1250
322 bool 1051 bool
323 1052
324 config GENERIC_CALIBRATE_DELAY !! 1053 config CEVT_TXX9
325 def_bool y !! 1054 bool
326 1055
327 config GENERIC_CSUM !! 1056 config CSRC_BCM1480
328 def_bool y !! 1057 bool
329 1058
330 config GENERIC_HWEIGHT !! 1059 config CSRC_IOASIC
331 def_bool y !! 1060 bool
332 1061
333 config FIX_EARLYCON_MEM !! 1062 config CSRC_R4K
334 def_bool MMU !! 1063 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
>> 1064 bool
335 1065
336 config ILLEGAL_POINTER_VALUE !! 1066 config CSRC_SB1250
337 hex !! 1067 bool
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 1068
341 config PGTABLE_LEVELS !! 1069 config MIPS_CLOCK_VSYSCALL
342 int !! 1070 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
343 default 5 if 64BIT <<
344 default 2 <<
345 1071
346 config LOCKDEP_SUPPORT !! 1072 config GPIO_TXX9
347 def_bool y !! 1073 select GPIOLIB
>> 1074 bool
348 1075
349 config RISCV_DMA_NONCOHERENT !! 1076 config FW_CFE
>> 1077 bool
>> 1078
>> 1079 config ARCH_SUPPORTS_UPROBES
>> 1080 bool
>> 1081
>> 1082 config DMA_PERDEV_COHERENT
350 bool 1083 bool
351 select ARCH_HAS_DMA_PREP_COHERENT <<
352 select ARCH_HAS_SETUP_DMA_OPS 1084 select ARCH_HAS_SETUP_DMA_OPS
353 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 1085 select DMA_NONCOHERENT
>> 1086
>> 1087 config DMA_NONCOHERENT
>> 1088 bool
>> 1089 #
>> 1090 # MIPS allows mixing "slightly different" Cacheability and Coherency
>> 1091 # Attribute bits. It is believed that the uncached access through
>> 1092 # KSEG1 and the implementation specific "uncached accelerated" used
>> 1093 # by pgprot_writcombine can be mixed, and the latter sometimes provides
>> 1094 # significant advantages.
>> 1095 #
>> 1096 select ARCH_HAS_DMA_WRITE_COMBINE
>> 1097 select ARCH_HAS_DMA_PREP_COHERENT
354 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1098 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if !! 1099 select ARCH_HAS_DMA_SET_UNCACHED
>> 1100 select DMA_NONCOHERENT_MMAP
>> 1101 select NEED_DMA_MAP_STATE
356 1102
357 config RISCV_NONSTANDARD_CACHE_OPS !! 1103 config SYS_HAS_EARLY_PRINTK
358 bool 1104 bool
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 1105
363 config AS_HAS_INSN !! 1106 config SYS_SUPPORTS_HOTPLUG_CPU
364 def_bool $(as-instr,.insn r 51$(comma) !! 1107 bool
365 1108
366 config AS_HAS_OPTION_ARCH !! 1109 config MIPS_BONITO64
367 # https://github.com/llvm/llvm-project !! 1110 bool
368 def_bool y <<
369 depends on $(as-instr, .option arch$(c <<
370 1111
371 source "arch/riscv/Kconfig.socs" !! 1112 config MIPS_MSC
372 source "arch/riscv/Kconfig.errata" !! 1113 bool
373 1114
374 menu "Platform type" !! 1115 config SYNC_R4K
>> 1116 bool
375 1117
376 config NONPORTABLE !! 1118 config NO_IOPORT_MAP
377 bool "Allow configurations that result !! 1119 def_bool n
378 help <<
379 RISC-V kernel binaries are compatibl <<
380 whenever possible, but there are som <<
381 satisfied by configurations that res <<
382 not portable between systems. <<
383 1120
384 Selecting N does not guarantee kerne !! 1121 config GENERIC_CSUM
385 systems. Selecting any of the optio !! 1122 def_bool CPU_NO_LOAD_STORE_LR
386 result in kernel binaries that are u <<
387 systems. <<
388 1123
389 If unsure, say N. !! 1124 config GENERIC_ISA_DMA
>> 1125 bool
>> 1126 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1127 select ISA_DMA_API
>> 1128
>> 1129 config GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 1130 bool
>> 1131 select GENERIC_ISA_DMA
>> 1132
>> 1133 config HAVE_PLAT_DELAY
>> 1134 bool
>> 1135
>> 1136 config HAVE_PLAT_FW_INIT_CMDLINE
>> 1137 bool
>> 1138
>> 1139 config HAVE_PLAT_MEMCPY
>> 1140 bool
>> 1141
>> 1142 config ISA_DMA_API
>> 1143 bool
>> 1144
>> 1145 config SYS_SUPPORTS_RELOCATABLE
>> 1146 bool
>> 1147 help
>> 1148 Selected if the platform supports relocating the kernel.
>> 1149 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
>> 1150 to allow access to command line and entropy sources.
390 1151
>> 1152 #
>> 1153 # Endianness selection. Sufficiently obscure so many users don't know what to
>> 1154 # answer,so we try hard to limit the available choices. Also the use of a
>> 1155 # choice statement should be more obvious to the user.
>> 1156 #
391 choice 1157 choice
392 prompt "Base ISA" !! 1158 prompt "Endianness selection"
393 default ARCH_RV64I <<
394 help 1159 help
395 This selects the base ISA that this !! 1160 Some MIPS machines can be configured for either little or big endian
396 the target platform. !! 1161 byte order. These modes require different kernels and a different
>> 1162 Linux distribution. In general there is one preferred byteorder for a
>> 1163 particular system but some systems are just as commonly used in the
>> 1164 one or the other endianness.
>> 1165
>> 1166 config CPU_BIG_ENDIAN
>> 1167 bool "Big endian"
>> 1168 depends on SYS_SUPPORTS_BIG_ENDIAN
>> 1169
>> 1170 config CPU_LITTLE_ENDIAN
>> 1171 bool "Little endian"
>> 1172 depends on SYS_SUPPORTS_LITTLE_ENDIAN
397 1173
398 config ARCH_RV32I !! 1174 endchoice
399 bool "RV32I" <<
400 depends on NONPORTABLE <<
401 select 32BIT <<
402 select GENERIC_LIB_ASHLDI3 <<
403 select GENERIC_LIB_ASHRDI3 <<
404 select GENERIC_LIB_LSHRDI3 <<
405 select GENERIC_LIB_UCMPDI2 <<
406 1175
407 config ARCH_RV64I !! 1176 config EXPORT_UASM
408 bool "RV64I" !! 1177 bool
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 1178
413 endchoice !! 1179 config SYS_SUPPORTS_APM_EMULATION
>> 1180 bool
>> 1181
>> 1182 config SYS_SUPPORTS_BIG_ENDIAN
>> 1183 bool
>> 1184
>> 1185 config SYS_SUPPORTS_LITTLE_ENDIAN
>> 1186 bool
>> 1187
>> 1188 config MIPS_HUGE_TLB_SUPPORT
>> 1189 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
>> 1190
>> 1191 config IRQ_MSP_SLP
>> 1192 bool
>> 1193
>> 1194 config IRQ_MSP_CIC
>> 1195 bool
>> 1196
>> 1197 config IRQ_TXX9
>> 1198 bool
>> 1199
>> 1200 config IRQ_GT641XX
>> 1201 bool
>> 1202
>> 1203 config PCI_GT64XXX_PCI0
>> 1204 bool
>> 1205
>> 1206 config PCI_XTALK_BRIDGE
>> 1207 bool
>> 1208
>> 1209 config NO_EXCEPT_FILL
>> 1210 bool
>> 1211
>> 1212 config MIPS_SPRAM
>> 1213 bool
>> 1214
>> 1215 config SWAP_IO_SPACE
>> 1216 bool
>> 1217
>> 1218 config SGI_HAS_INDYDOG
>> 1219 bool
>> 1220
>> 1221 config SGI_HAS_HAL2
>> 1222 bool
>> 1223
>> 1224 config SGI_HAS_SEEQ
>> 1225 bool
>> 1226
>> 1227 config SGI_HAS_WD93
>> 1228 bool
>> 1229
>> 1230 config SGI_HAS_ZILOG
>> 1231 bool
>> 1232
>> 1233 config SGI_HAS_I8042
>> 1234 bool
>> 1235
>> 1236 config DEFAULT_SGI_PARTITION
>> 1237 bool
>> 1238
>> 1239 config FW_ARC32
>> 1240 bool
>> 1241
>> 1242 config FW_SNIPROM
>> 1243 bool
>> 1244
>> 1245 config BOOT_ELF32
>> 1246 bool
>> 1247
>> 1248 config MIPS_L1_CACHE_SHIFT_4
>> 1249 bool
>> 1250
>> 1251 config MIPS_L1_CACHE_SHIFT_5
>> 1252 bool
>> 1253
>> 1254 config MIPS_L1_CACHE_SHIFT_6
>> 1255 bool
>> 1256
>> 1257 config MIPS_L1_CACHE_SHIFT_7
>> 1258 bool
>> 1259
>> 1260 config MIPS_L1_CACHE_SHIFT
>> 1261 int
>> 1262 default "7" if MIPS_L1_CACHE_SHIFT_7
>> 1263 default "6" if MIPS_L1_CACHE_SHIFT_6
>> 1264 default "5" if MIPS_L1_CACHE_SHIFT_5
>> 1265 default "4" if MIPS_L1_CACHE_SHIFT_4
>> 1266 default "5"
>> 1267
>> 1268 config ARC_CMDLINE_ONLY
>> 1269 bool
>> 1270
>> 1271 config ARC_CONSOLE
>> 1272 bool "ARC console support"
>> 1273 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
>> 1274
>> 1275 config ARC_MEMORY
>> 1276 bool
>> 1277
>> 1278 config ARC_PROMLIB
>> 1279 bool
>> 1280
>> 1281 config FW_ARC64
>> 1282 bool
>> 1283
>> 1284 config BOOT_ELF64
>> 1285 bool
>> 1286
>> 1287 menu "CPU selection"
414 1288
415 # We must be able to map all physical memory i <<
416 # is still a bit more efficient when generatin <<
417 # such that it can only map 2GiB of memory. <<
418 choice 1289 choice
419 prompt "Kernel Code Model" !! 1290 prompt "CPU type"
420 default CMODEL_MEDLOW if 32BIT !! 1291 default CPU_R4X00
421 default CMODEL_MEDANY if 64BIT !! 1292
422 !! 1293 config CPU_LOONGSON64
423 config CMODEL_MEDLOW !! 1294 bool "Loongson 64-bit CPU"
424 bool "medium low code model" !! 1295 depends on SYS_HAS_CPU_LOONGSON64
425 config CMODEL_MEDANY !! 1296 select ARCH_HAS_PHYS_TO_DMA
426 bool "medium any code model" !! 1297 select CPU_MIPSR2
>> 1298 select CPU_HAS_PREFETCH
>> 1299 select CPU_SUPPORTS_64BIT_KERNEL
>> 1300 select CPU_SUPPORTS_HIGHMEM
>> 1301 select CPU_SUPPORTS_HUGEPAGES
>> 1302 select CPU_SUPPORTS_MSA
>> 1303 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
>> 1304 select CPU_MIPSR2_IRQ_VI
>> 1305 select WEAK_ORDERING
>> 1306 select WEAK_REORDERING_BEYOND_LLSC
>> 1307 select MIPS_ASID_BITS_VARIABLE
>> 1308 select MIPS_PGD_C0_CONTEXT
>> 1309 select MIPS_L1_CACHE_SHIFT_6
>> 1310 select MIPS_FP_SUPPORT
>> 1311 select GPIOLIB
>> 1312 select SWIOTLB
>> 1313 select HAVE_KVM
>> 1314 help
>> 1315 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
>> 1316 cores implements the MIPS64R2 instruction set with many extensions,
>> 1317 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
>> 1318 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
>> 1319 Loongson-2E/2F is not covered here and will be removed in future.
>> 1320
>> 1321 config LOONGSON3_ENHANCEMENT
>> 1322 bool "New Loongson-3 CPU Enhancements"
>> 1323 default n
>> 1324 depends on CPU_LOONGSON64
>> 1325 help
>> 1326 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
>> 1327 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
>> 1328 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
>> 1329 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
>> 1330 Fast TLB refill support, etc.
>> 1331
>> 1332 This option enable those enhancements which are not probed at run
>> 1333 time. If you want a generic kernel to run on all Loongson 3 machines,
>> 1334 please say 'N' here. If you want a high-performance kernel to run on
>> 1335 new Loongson-3 machines only, please say 'Y' here.
>> 1336
>> 1337 config CPU_LOONGSON3_WORKAROUNDS
>> 1338 bool "Loongson-3 LLSC Workarounds"
>> 1339 default y if SMP
>> 1340 depends on CPU_LOONGSON64
>> 1341 help
>> 1342 Loongson-3 processors have the llsc issues which require workarounds.
>> 1343 Without workarounds the system may hang unexpectedly.
>> 1344
>> 1345 Say Y, unless you know what you are doing.
>> 1346
>> 1347 config CPU_LOONGSON3_CPUCFG_EMULATION
>> 1348 bool "Emulate the CPUCFG instruction on older Loongson cores"
>> 1349 default y
>> 1350 depends on CPU_LOONGSON64
>> 1351 help
>> 1352 Loongson-3A R4 and newer have the CPUCFG instruction available for
>> 1353 userland to query CPU capabilities, much like CPUID on x86. This
>> 1354 option provides emulation of the instruction on older Loongson
>> 1355 cores, back to Loongson-3A1000.
>> 1356
>> 1357 If unsure, please say Y.
>> 1358
>> 1359 config CPU_LOONGSON2E
>> 1360 bool "Loongson 2E"
>> 1361 depends on SYS_HAS_CPU_LOONGSON2E
>> 1362 select CPU_LOONGSON2EF
>> 1363 help
>> 1364 The Loongson 2E processor implements the MIPS III instruction set
>> 1365 with many extensions.
>> 1366
>> 1367 It has an internal FPGA northbridge, which is compatible to
>> 1368 bonito64.
>> 1369
>> 1370 config CPU_LOONGSON2F
>> 1371 bool "Loongson 2F"
>> 1372 depends on SYS_HAS_CPU_LOONGSON2F
>> 1373 select CPU_LOONGSON2EF
>> 1374 select GPIOLIB
>> 1375 help
>> 1376 The Loongson 2F processor implements the MIPS III instruction set
>> 1377 with many extensions.
>> 1378
>> 1379 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
>> 1380 have a similar programming interface with FPGA northbridge used in
>> 1381 Loongson2E.
>> 1382
>> 1383 config CPU_LOONGSON1B
>> 1384 bool "Loongson 1B"
>> 1385 depends on SYS_HAS_CPU_LOONGSON1B
>> 1386 select CPU_LOONGSON32
>> 1387 select LEDS_GPIO_REGISTER
>> 1388 help
>> 1389 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> 1390 Release 1 instruction set and part of the MIPS32 Release 2
>> 1391 instruction set.
>> 1392
>> 1393 config CPU_LOONGSON1C
>> 1394 bool "Loongson 1C"
>> 1395 depends on SYS_HAS_CPU_LOONGSON1C
>> 1396 select CPU_LOONGSON32
>> 1397 select LEDS_GPIO_REGISTER
>> 1398 help
>> 1399 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
>> 1400 Release 1 instruction set and part of the MIPS32 Release 2
>> 1401 instruction set.
>> 1402
>> 1403 config CPU_MIPS32_R1
>> 1404 bool "MIPS32 Release 1"
>> 1405 depends on SYS_HAS_CPU_MIPS32_R1
>> 1406 select CPU_HAS_PREFETCH
>> 1407 select CPU_SUPPORTS_32BIT_KERNEL
>> 1408 select CPU_SUPPORTS_HIGHMEM
>> 1409 help
>> 1410 Choose this option to build a kernel for release 1 or later of the
>> 1411 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1412 MIPS processor are based on a MIPS32 processor. If you know the
>> 1413 specific type of processor in your system, choose those that one
>> 1414 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1415 Release 2 of the MIPS32 architecture is available since several
>> 1416 years so chances are you even have a MIPS32 Release 2 processor
>> 1417 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1418 performance.
>> 1419
>> 1420 config CPU_MIPS32_R2
>> 1421 bool "MIPS32 Release 2"
>> 1422 depends on SYS_HAS_CPU_MIPS32_R2
>> 1423 select CPU_HAS_PREFETCH
>> 1424 select CPU_SUPPORTS_32BIT_KERNEL
>> 1425 select CPU_SUPPORTS_HIGHMEM
>> 1426 select CPU_SUPPORTS_MSA
>> 1427 select HAVE_KVM
>> 1428 help
>> 1429 Choose this option to build a kernel for release 2 or later of the
>> 1430 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1431 MIPS processor are based on a MIPS32 processor. If you know the
>> 1432 specific type of processor in your system, choose those that one
>> 1433 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1434
>> 1435 config CPU_MIPS32_R5
>> 1436 bool "MIPS32 Release 5"
>> 1437 depends on SYS_HAS_CPU_MIPS32_R5
>> 1438 select CPU_HAS_PREFETCH
>> 1439 select CPU_SUPPORTS_32BIT_KERNEL
>> 1440 select CPU_SUPPORTS_HIGHMEM
>> 1441 select CPU_SUPPORTS_MSA
>> 1442 select HAVE_KVM
>> 1443 select MIPS_O32_FP64_SUPPORT
>> 1444 help
>> 1445 Choose this option to build a kernel for release 5 or later of the
>> 1446 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1447 family, are based on a MIPS32r5 processor. If you own an older
>> 1448 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1449
>> 1450 config CPU_MIPS32_R6
>> 1451 bool "MIPS32 Release 6"
>> 1452 depends on SYS_HAS_CPU_MIPS32_R6
>> 1453 select CPU_HAS_PREFETCH
>> 1454 select CPU_NO_LOAD_STORE_LR
>> 1455 select CPU_SUPPORTS_32BIT_KERNEL
>> 1456 select CPU_SUPPORTS_HIGHMEM
>> 1457 select CPU_SUPPORTS_MSA
>> 1458 select HAVE_KVM
>> 1459 select MIPS_O32_FP64_SUPPORT
>> 1460 help
>> 1461 Choose this option to build a kernel for release 6 or later of the
>> 1462 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1463 family, are based on a MIPS32r6 processor. If you own an older
>> 1464 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1465
>> 1466 config CPU_MIPS64_R1
>> 1467 bool "MIPS64 Release 1"
>> 1468 depends on SYS_HAS_CPU_MIPS64_R1
>> 1469 select CPU_HAS_PREFETCH
>> 1470 select CPU_SUPPORTS_32BIT_KERNEL
>> 1471 select CPU_SUPPORTS_64BIT_KERNEL
>> 1472 select CPU_SUPPORTS_HIGHMEM
>> 1473 select CPU_SUPPORTS_HUGEPAGES
>> 1474 help
>> 1475 Choose this option to build a kernel for release 1 or later of the
>> 1476 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1477 MIPS processor are based on a MIPS64 processor. If you know the
>> 1478 specific type of processor in your system, choose those that one
>> 1479 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1480 Release 2 of the MIPS64 architecture is available since several
>> 1481 years so chances are you even have a MIPS64 Release 2 processor
>> 1482 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1483 performance.
>> 1484
>> 1485 config CPU_MIPS64_R2
>> 1486 bool "MIPS64 Release 2"
>> 1487 depends on SYS_HAS_CPU_MIPS64_R2
>> 1488 select CPU_HAS_PREFETCH
>> 1489 select CPU_SUPPORTS_32BIT_KERNEL
>> 1490 select CPU_SUPPORTS_64BIT_KERNEL
>> 1491 select CPU_SUPPORTS_HIGHMEM
>> 1492 select CPU_SUPPORTS_HUGEPAGES
>> 1493 select CPU_SUPPORTS_MSA
>> 1494 select HAVE_KVM
>> 1495 help
>> 1496 Choose this option to build a kernel for release 2 or later of the
>> 1497 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1498 MIPS processor are based on a MIPS64 processor. If you know the
>> 1499 specific type of processor in your system, choose those that one
>> 1500 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1501
>> 1502 config CPU_MIPS64_R5
>> 1503 bool "MIPS64 Release 5"
>> 1504 depends on SYS_HAS_CPU_MIPS64_R5
>> 1505 select CPU_HAS_PREFETCH
>> 1506 select CPU_SUPPORTS_32BIT_KERNEL
>> 1507 select CPU_SUPPORTS_64BIT_KERNEL
>> 1508 select CPU_SUPPORTS_HIGHMEM
>> 1509 select CPU_SUPPORTS_HUGEPAGES
>> 1510 select CPU_SUPPORTS_MSA
>> 1511 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1512 select HAVE_KVM
>> 1513 help
>> 1514 Choose this option to build a kernel for release 5 or later of the
>> 1515 MIPS64 architecture. This is a intermediate MIPS architecture
>> 1516 release partly implementing release 6 features. Though there is no
>> 1517 any hardware known to be based on this release.
>> 1518
>> 1519 config CPU_MIPS64_R6
>> 1520 bool "MIPS64 Release 6"
>> 1521 depends on SYS_HAS_CPU_MIPS64_R6
>> 1522 select CPU_HAS_PREFETCH
>> 1523 select CPU_NO_LOAD_STORE_LR
>> 1524 select CPU_SUPPORTS_32BIT_KERNEL
>> 1525 select CPU_SUPPORTS_64BIT_KERNEL
>> 1526 select CPU_SUPPORTS_HIGHMEM
>> 1527 select CPU_SUPPORTS_HUGEPAGES
>> 1528 select CPU_SUPPORTS_MSA
>> 1529 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1530 select HAVE_KVM
>> 1531 help
>> 1532 Choose this option to build a kernel for release 6 or later of the
>> 1533 MIPS64 architecture. New MIPS processors, starting with the Warrior
>> 1534 family, are based on a MIPS64r6 processor. If you own an older
>> 1535 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
>> 1536
>> 1537 config CPU_P5600
>> 1538 bool "MIPS Warrior P5600"
>> 1539 depends on SYS_HAS_CPU_P5600
>> 1540 select CPU_HAS_PREFETCH
>> 1541 select CPU_SUPPORTS_32BIT_KERNEL
>> 1542 select CPU_SUPPORTS_HIGHMEM
>> 1543 select CPU_SUPPORTS_MSA
>> 1544 select CPU_SUPPORTS_CPUFREQ
>> 1545 select CPU_MIPSR2_IRQ_VI
>> 1546 select CPU_MIPSR2_IRQ_EI
>> 1547 select HAVE_KVM
>> 1548 select MIPS_O32_FP64_SUPPORT
>> 1549 help
>> 1550 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
>> 1551 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
>> 1552 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
>> 1553 level features like up to six P5600 calculation cores, CM2 with L2
>> 1554 cache, IOCU/IOMMU (though might be unused depending on the system-
>> 1555 specific IP core configuration), GIC, CPC, virtualisation module,
>> 1556 eJTAG and PDtrace.
>> 1557
>> 1558 config CPU_R3000
>> 1559 bool "R3000"
>> 1560 depends on SYS_HAS_CPU_R3000
>> 1561 select CPU_HAS_WB
>> 1562 select CPU_R3K_TLB
>> 1563 select CPU_SUPPORTS_32BIT_KERNEL
>> 1564 select CPU_SUPPORTS_HIGHMEM
>> 1565 help
>> 1566 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1567 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1568 *not* work on R4000 machines and vice versa. However, since most
>> 1569 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1570 might be a safe bet. If the resulting kernel does not work,
>> 1571 try to recompile with R3000.
>> 1572
>> 1573 config CPU_R4300
>> 1574 bool "R4300"
>> 1575 depends on SYS_HAS_CPU_R4300
>> 1576 select CPU_SUPPORTS_32BIT_KERNEL
>> 1577 select CPU_SUPPORTS_64BIT_KERNEL
>> 1578 help
>> 1579 MIPS Technologies R4300-series processors.
>> 1580
>> 1581 config CPU_R4X00
>> 1582 bool "R4x00"
>> 1583 depends on SYS_HAS_CPU_R4X00
>> 1584 select CPU_SUPPORTS_32BIT_KERNEL
>> 1585 select CPU_SUPPORTS_64BIT_KERNEL
>> 1586 select CPU_SUPPORTS_HUGEPAGES
>> 1587 help
>> 1588 MIPS Technologies R4000-series processors other than 4300, including
>> 1589 the R4000, R4400, R4600, and 4700.
>> 1590
>> 1591 config CPU_TX49XX
>> 1592 bool "R49XX"
>> 1593 depends on SYS_HAS_CPU_TX49XX
>> 1594 select CPU_HAS_PREFETCH
>> 1595 select CPU_SUPPORTS_32BIT_KERNEL
>> 1596 select CPU_SUPPORTS_64BIT_KERNEL
>> 1597 select CPU_SUPPORTS_HUGEPAGES
>> 1598
>> 1599 config CPU_R5000
>> 1600 bool "R5000"
>> 1601 depends on SYS_HAS_CPU_R5000
>> 1602 select CPU_SUPPORTS_32BIT_KERNEL
>> 1603 select CPU_SUPPORTS_64BIT_KERNEL
>> 1604 select CPU_SUPPORTS_HUGEPAGES
>> 1605 help
>> 1606 MIPS Technologies R5000-series processors other than the Nevada.
>> 1607
>> 1608 config CPU_R5500
>> 1609 bool "R5500"
>> 1610 depends on SYS_HAS_CPU_R5500
>> 1611 select CPU_SUPPORTS_32BIT_KERNEL
>> 1612 select CPU_SUPPORTS_64BIT_KERNEL
>> 1613 select CPU_SUPPORTS_HUGEPAGES
>> 1614 help
>> 1615 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1616 instruction set.
>> 1617
>> 1618 config CPU_NEVADA
>> 1619 bool "RM52xx"
>> 1620 depends on SYS_HAS_CPU_NEVADA
>> 1621 select CPU_SUPPORTS_32BIT_KERNEL
>> 1622 select CPU_SUPPORTS_64BIT_KERNEL
>> 1623 select CPU_SUPPORTS_HUGEPAGES
>> 1624 help
>> 1625 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1626
>> 1627 config CPU_R10000
>> 1628 bool "R10000"
>> 1629 depends on SYS_HAS_CPU_R10000
>> 1630 select CPU_HAS_PREFETCH
>> 1631 select CPU_SUPPORTS_32BIT_KERNEL
>> 1632 select CPU_SUPPORTS_64BIT_KERNEL
>> 1633 select CPU_SUPPORTS_HIGHMEM
>> 1634 select CPU_SUPPORTS_HUGEPAGES
>> 1635 help
>> 1636 MIPS Technologies R10000-series processors.
>> 1637
>> 1638 config CPU_RM7000
>> 1639 bool "RM7000"
>> 1640 depends on SYS_HAS_CPU_RM7000
>> 1641 select CPU_HAS_PREFETCH
>> 1642 select CPU_SUPPORTS_32BIT_KERNEL
>> 1643 select CPU_SUPPORTS_64BIT_KERNEL
>> 1644 select CPU_SUPPORTS_HIGHMEM
>> 1645 select CPU_SUPPORTS_HUGEPAGES
>> 1646
>> 1647 config CPU_SB1
>> 1648 bool "SB1"
>> 1649 depends on SYS_HAS_CPU_SB1
>> 1650 select CPU_SUPPORTS_32BIT_KERNEL
>> 1651 select CPU_SUPPORTS_64BIT_KERNEL
>> 1652 select CPU_SUPPORTS_HIGHMEM
>> 1653 select CPU_SUPPORTS_HUGEPAGES
>> 1654 select WEAK_ORDERING
>> 1655
>> 1656 config CPU_CAVIUM_OCTEON
>> 1657 bool "Cavium Octeon processor"
>> 1658 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1659 select CPU_HAS_PREFETCH
>> 1660 select CPU_SUPPORTS_64BIT_KERNEL
>> 1661 select WEAK_ORDERING
>> 1662 select CPU_SUPPORTS_HIGHMEM
>> 1663 select CPU_SUPPORTS_HUGEPAGES
>> 1664 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1665 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1666 select MIPS_L1_CACHE_SHIFT_7
>> 1667 select HAVE_KVM
>> 1668 help
>> 1669 The Cavium Octeon processor is a highly integrated chip containing
>> 1670 many ethernet hardware widgets for networking tasks. The processor
>> 1671 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1672 Full details can be found at http://www.caviumnetworks.com.
>> 1673
>> 1674 config CPU_BMIPS
>> 1675 bool "Broadcom BMIPS"
>> 1676 depends on SYS_HAS_CPU_BMIPS
>> 1677 select CPU_MIPS32
>> 1678 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
>> 1679 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
>> 1680 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
>> 1681 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
>> 1682 select CPU_SUPPORTS_32BIT_KERNEL
>> 1683 select DMA_NONCOHERENT
>> 1684 select IRQ_MIPS_CPU
>> 1685 select SWAP_IO_SPACE
>> 1686 select WEAK_ORDERING
>> 1687 select CPU_SUPPORTS_HIGHMEM
>> 1688 select CPU_HAS_PREFETCH
>> 1689 select CPU_SUPPORTS_CPUFREQ
>> 1690 select MIPS_EXTERNAL_TIMER
>> 1691 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
>> 1692 help
>> 1693 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
>> 1694
427 endchoice 1695 endchoice
428 1696
429 config MODULE_SECTIONS !! 1697 config CPU_MIPS32_3_5_FEATURES
>> 1698 bool "MIPS32 Release 3.5 Features"
>> 1699 depends on SYS_HAS_CPU_MIPS32_R3_5
>> 1700 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
>> 1701 CPU_P5600
>> 1702 help
>> 1703 Choose this option to build a kernel for release 2 or later of the
>> 1704 MIPS32 architecture including features from the 3.5 release such as
>> 1705 support for Enhanced Virtual Addressing (EVA).
>> 1706
>> 1707 config CPU_MIPS32_3_5_EVA
>> 1708 bool "Enhanced Virtual Addressing (EVA)"
>> 1709 depends on CPU_MIPS32_3_5_FEATURES
>> 1710 select EVA
>> 1711 default y
>> 1712 help
>> 1713 Choose this option if you want to enable the Enhanced Virtual
>> 1714 Addressing (EVA) on your MIPS32 core (such as proAptiv).
>> 1715 One of its primary benefits is an increase in the maximum size
>> 1716 of lowmem (up to 3GB). If unsure, say 'N' here.
>> 1717
>> 1718 config CPU_MIPS32_R5_FEATURES
>> 1719 bool "MIPS32 Release 5 Features"
>> 1720 depends on SYS_HAS_CPU_MIPS32_R5
>> 1721 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
>> 1722 help
>> 1723 Choose this option to build a kernel for release 2 or later of the
>> 1724 MIPS32 architecture including features from release 5 such as
>> 1725 support for Extended Physical Addressing (XPA).
>> 1726
>> 1727 config CPU_MIPS32_R5_XPA
>> 1728 bool "Extended Physical Addressing (XPA)"
>> 1729 depends on CPU_MIPS32_R5_FEATURES
>> 1730 depends on !EVA
>> 1731 depends on !PAGE_SIZE_4KB
>> 1732 depends on SYS_SUPPORTS_HIGHMEM
>> 1733 select XPA
>> 1734 select HIGHMEM
>> 1735 select PHYS_ADDR_T_64BIT
>> 1736 default n
>> 1737 help
>> 1738 Choose this option if you want to enable the Extended Physical
>> 1739 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
>> 1740 benefit is to increase physical addressing equal to or greater
>> 1741 than 40 bits. Note that this has the side effect of turning on
>> 1742 64-bit addressing which in turn makes the PTEs 64-bit in size.
>> 1743 If unsure, say 'N' here.
>> 1744
>> 1745 if CPU_LOONGSON2F
>> 1746 config CPU_NOP_WORKAROUNDS
430 bool 1747 bool
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 1748
433 config SMP !! 1749 config CPU_JUMP_WORKAROUNDS
434 bool "Symmetric Multi-Processing" !! 1750 bool
>> 1751
>> 1752 config CPU_LOONGSON2F_WORKAROUNDS
>> 1753 bool "Loongson 2F Workarounds"
>> 1754 default y
>> 1755 select CPU_NOP_WORKAROUNDS
>> 1756 select CPU_JUMP_WORKAROUNDS
435 help 1757 help
436 This enables support for systems wit !! 1758 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
437 you say N here, the kernel will run !! 1759 require workarounds. Without workarounds the system may hang
438 multiprocessor machines, but will us !! 1760 unexpectedly. For more information please refer to the gas
439 multiprocessor machine. If you say Y !! 1761 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
440 on many, but not all, single process !! 1762
441 processor machine, the kernel will r !! 1763 Loongson 2F03 and later have fixed these issues and no workarounds
442 here. !! 1764 are needed. The workarounds have no significant side effect on them
>> 1765 but may decrease the performance of the system so this option should
>> 1766 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1767 systems.
443 1768
444 If you don't know what to do here, s !! 1769 If unsure, please say Y.
>> 1770 endif # CPU_LOONGSON2F
445 1771
446 config SCHED_MC !! 1772 config SYS_SUPPORTS_ZBOOT
447 bool "Multi-core scheduler support" !! 1773 bool
448 depends on SMP !! 1774 select HAVE_KERNEL_GZIP
449 help !! 1775 select HAVE_KERNEL_BZIP2
450 Multi-core scheduler support improve !! 1776 select HAVE_KERNEL_LZ4
451 making when dealing with multi-core !! 1777 select HAVE_KERNEL_LZMA
452 increased overhead in some places. I !! 1778 select HAVE_KERNEL_LZO
>> 1779 select HAVE_KERNEL_XZ
>> 1780 select HAVE_KERNEL_ZSTD
453 1781
454 config NR_CPUS !! 1782 config SYS_SUPPORTS_ZBOOT_UART16550
455 int "Maximum number of CPUs (2-512)" !! 1783 bool
456 depends on SMP !! 1784 select SYS_SUPPORTS_ZBOOT
457 range 2 512 if !RISCV_SBI_V01 <<
458 range 2 32 if RISCV_SBI_V01 && 32BIT <<
459 range 2 64 if RISCV_SBI_V01 && 64BIT <<
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 1785
463 config HOTPLUG_CPU !! 1786 config SYS_SUPPORTS_ZBOOT_UART_PROM
464 bool "Support for hot-pluggable CPUs" !! 1787 bool
465 depends on SMP !! 1788 select SYS_SUPPORTS_ZBOOT
466 select GENERIC_IRQ_MIGRATION !! 1789
>> 1790 config CPU_LOONGSON2EF
>> 1791 bool
>> 1792 select CPU_SUPPORTS_32BIT_KERNEL
>> 1793 select CPU_SUPPORTS_64BIT_KERNEL
>> 1794 select CPU_SUPPORTS_HIGHMEM
>> 1795 select CPU_SUPPORTS_HUGEPAGES
>> 1796 select ARCH_HAS_PHYS_TO_DMA
>> 1797
>> 1798 config CPU_LOONGSON32
>> 1799 bool
>> 1800 select CPU_MIPS32
>> 1801 select CPU_MIPSR2
>> 1802 select CPU_HAS_PREFETCH
>> 1803 select CPU_SUPPORTS_32BIT_KERNEL
>> 1804 select CPU_SUPPORTS_HIGHMEM
>> 1805 select CPU_SUPPORTS_CPUFREQ
>> 1806
>> 1807 config CPU_BMIPS32_3300
>> 1808 select SMP_UP if SMP
>> 1809 bool
>> 1810
>> 1811 config CPU_BMIPS4350
>> 1812 bool
>> 1813 select SYS_SUPPORTS_SMP
>> 1814 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1815
>> 1816 config CPU_BMIPS4380
>> 1817 bool
>> 1818 select MIPS_L1_CACHE_SHIFT_6
>> 1819 select SYS_SUPPORTS_SMP
>> 1820 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1821 select CPU_HAS_RIXI
>> 1822
>> 1823 config CPU_BMIPS5000
>> 1824 bool
>> 1825 select MIPS_CPU_SCACHE
>> 1826 select MIPS_L1_CACHE_SHIFT_7
>> 1827 select SYS_SUPPORTS_SMP
>> 1828 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1829 select CPU_HAS_RIXI
>> 1830
>> 1831 config SYS_HAS_CPU_LOONGSON64
>> 1832 bool
>> 1833 select CPU_SUPPORTS_CPUFREQ
>> 1834 select CPU_HAS_RIXI
>> 1835
>> 1836 config SYS_HAS_CPU_LOONGSON2E
>> 1837 bool
>> 1838
>> 1839 config SYS_HAS_CPU_LOONGSON2F
>> 1840 bool
>> 1841 select CPU_SUPPORTS_CPUFREQ
>> 1842 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1843
>> 1844 config SYS_HAS_CPU_LOONGSON1B
>> 1845 bool
>> 1846
>> 1847 config SYS_HAS_CPU_LOONGSON1C
>> 1848 bool
>> 1849
>> 1850 config SYS_HAS_CPU_MIPS32_R1
>> 1851 bool
>> 1852
>> 1853 config SYS_HAS_CPU_MIPS32_R2
>> 1854 bool
>> 1855
>> 1856 config SYS_HAS_CPU_MIPS32_R3_5
>> 1857 bool
>> 1858
>> 1859 config SYS_HAS_CPU_MIPS32_R5
>> 1860 bool
>> 1861 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1862
>> 1863 config SYS_HAS_CPU_MIPS32_R6
>> 1864 bool
>> 1865 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1866
>> 1867 config SYS_HAS_CPU_MIPS64_R1
>> 1868 bool
>> 1869
>> 1870 config SYS_HAS_CPU_MIPS64_R2
>> 1871 bool
>> 1872
>> 1873 config SYS_HAS_CPU_MIPS64_R5
>> 1874 bool
>> 1875 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1876
>> 1877 config SYS_HAS_CPU_MIPS64_R6
>> 1878 bool
>> 1879 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1880
>> 1881 config SYS_HAS_CPU_P5600
>> 1882 bool
>> 1883 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1884
>> 1885 config SYS_HAS_CPU_R3000
>> 1886 bool
>> 1887
>> 1888 config SYS_HAS_CPU_R4300
>> 1889 bool
>> 1890
>> 1891 config SYS_HAS_CPU_R4X00
>> 1892 bool
>> 1893
>> 1894 config SYS_HAS_CPU_TX49XX
>> 1895 bool
>> 1896
>> 1897 config SYS_HAS_CPU_R5000
>> 1898 bool
>> 1899
>> 1900 config SYS_HAS_CPU_R5500
>> 1901 bool
>> 1902
>> 1903 config SYS_HAS_CPU_NEVADA
>> 1904 bool
>> 1905
>> 1906 config SYS_HAS_CPU_R10000
>> 1907 bool
>> 1908 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>> 1909
>> 1910 config SYS_HAS_CPU_RM7000
>> 1911 bool
>> 1912
>> 1913 config SYS_HAS_CPU_SB1
>> 1914 bool
>> 1915
>> 1916 config SYS_HAS_CPU_CAVIUM_OCTEON
>> 1917 bool
>> 1918
>> 1919 config SYS_HAS_CPU_BMIPS
>> 1920 bool
>> 1921
>> 1922 config SYS_HAS_CPU_BMIPS32_3300
>> 1923 bool
>> 1924 select SYS_HAS_CPU_BMIPS
>> 1925
>> 1926 config SYS_HAS_CPU_BMIPS4350
>> 1927 bool
>> 1928 select SYS_HAS_CPU_BMIPS
>> 1929
>> 1930 config SYS_HAS_CPU_BMIPS4380
>> 1931 bool
>> 1932 select SYS_HAS_CPU_BMIPS
>> 1933
>> 1934 config SYS_HAS_CPU_BMIPS5000
>> 1935 bool
>> 1936 select SYS_HAS_CPU_BMIPS
>> 1937 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 1938
>> 1939 #
>> 1940 # CPU may reorder R->R, R->W, W->R, W->W
>> 1941 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 1942 #
>> 1943 config WEAK_ORDERING
>> 1944 bool
>> 1945
>> 1946 #
>> 1947 # CPU may reorder reads and writes beyond LL/SC
>> 1948 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 1949 #
>> 1950 config WEAK_REORDERING_BEYOND_LLSC
>> 1951 bool
>> 1952 endmenu
>> 1953
>> 1954 #
>> 1955 # These two indicate any level of the MIPS32 and MIPS64 architecture
>> 1956 #
>> 1957 config CPU_MIPS32
>> 1958 bool
>> 1959 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
>> 1960 CPU_MIPS32_R6 || CPU_P5600
>> 1961
>> 1962 config CPU_MIPS64
>> 1963 bool
>> 1964 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
>> 1965 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON
>> 1966
>> 1967 #
>> 1968 # These indicate the revision of the architecture
>> 1969 #
>> 1970 config CPU_MIPSR1
>> 1971 bool
>> 1972 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
>> 1973
>> 1974 config CPU_MIPSR2
>> 1975 bool
>> 1976 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
>> 1977 select CPU_HAS_RIXI
>> 1978 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1979 select MIPS_SPRAM
>> 1980
>> 1981 config CPU_MIPSR5
>> 1982 bool
>> 1983 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
>> 1984 select CPU_HAS_RIXI
>> 1985 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1986 select MIPS_SPRAM
>> 1987
>> 1988 config CPU_MIPSR6
>> 1989 bool
>> 1990 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
>> 1991 select CPU_HAS_RIXI
>> 1992 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1993 select HAVE_ARCH_BITREVERSE
>> 1994 select MIPS_ASID_BITS_VARIABLE
>> 1995 select MIPS_CRC_SUPPORT
>> 1996 select MIPS_SPRAM
>> 1997
>> 1998 config TARGET_ISA_REV
>> 1999 int
>> 2000 default 1 if CPU_MIPSR1
>> 2001 default 2 if CPU_MIPSR2
>> 2002 default 5 if CPU_MIPSR5
>> 2003 default 6 if CPU_MIPSR6
>> 2004 default 0
467 help 2005 help
>> 2006 Reflects the ISA revision being targeted by the kernel build. This
>> 2007 is effectively the Kconfig equivalent of MIPS_ISA_REV.
468 2008
469 Say Y here to experiment with turnin !! 2009 config EVA
470 can be controlled through /sys/devic !! 2010 bool
471 2011
472 Say N if you want to disable CPU hot !! 2012 config XPA
>> 2013 bool
>> 2014
>> 2015 config SYS_SUPPORTS_32BIT_KERNEL
>> 2016 bool
>> 2017 config SYS_SUPPORTS_64BIT_KERNEL
>> 2018 bool
>> 2019 config CPU_SUPPORTS_32BIT_KERNEL
>> 2020 bool
>> 2021 config CPU_SUPPORTS_64BIT_KERNEL
>> 2022 bool
>> 2023 config CPU_SUPPORTS_CPUFREQ
>> 2024 bool
>> 2025 config CPU_SUPPORTS_ADDRWINCFG
>> 2026 bool
>> 2027 config CPU_SUPPORTS_HUGEPAGES
>> 2028 bool
>> 2029 depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA))
>> 2030 config MIPS_PGD_C0_CONTEXT
>> 2031 bool
>> 2032 depends on 64BIT
>> 2033 default y if (CPU_MIPSR2 || CPU_MIPSR6)
>> 2034
>> 2035 #
>> 2036 # Set to y for ptrace access to watch registers.
>> 2037 #
>> 2038 config HARDWARE_WATCHPOINTS
>> 2039 bool
>> 2040 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
>> 2041
>> 2042 menu "Kernel type"
473 2043
474 choice 2044 choice
475 prompt "CPU Tuning" !! 2045 prompt "Kernel code model"
476 default TUNE_GENERIC !! 2046 help
>> 2047 You should only select this option if you have a workload that
>> 2048 actually benefits from 64-bit processing or if your machine has
>> 2049 large memory. You will only be presented a single option in this
>> 2050 menu if your system does not support both 32-bit and 64-bit kernels.
477 2051
478 config TUNE_GENERIC !! 2052 config 32BIT
479 bool "generic" !! 2053 bool "32-bit kernel"
>> 2054 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
>> 2055 select TRAD_SIGNALS
>> 2056 help
>> 2057 Select this option if you want to build a 32-bit kernel.
>> 2058
>> 2059 config 64BIT
>> 2060 bool "64-bit kernel"
>> 2061 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
>> 2062 help
>> 2063 Select this option if you want to build a 64-bit kernel.
480 2064
481 endchoice 2065 endchoice
482 2066
483 # Common NUMA Features !! 2067 config MIPS_VA_BITS_48
484 config NUMA !! 2068 bool "48 bits virtual memory"
485 bool "NUMA Memory Allocation and Sched !! 2069 depends on 64BIT
486 depends on SMP && MMU <<
487 select ARCH_SUPPORTS_NUMA_BALANCING <<
488 select GENERIC_ARCH_NUMA <<
489 select HAVE_SETUP_PER_CPU_AREA <<
490 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
491 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
492 select OF_NUMA <<
493 select USE_PERCPU_NUMA_NODE_ID <<
494 help 2070 help
495 Enable NUMA (Non-Uniform Memory Acce !! 2071 Support a maximum at least 48 bits of application virtual
>> 2072 memory. Default is 40 bits or less, depending on the CPU.
>> 2073 For page sizes 16k and above, this option results in a small
>> 2074 memory overhead for page tables. For 4k page size, a fourth
>> 2075 level of page tables is added which imposes both a memory
>> 2076 overhead as well as slower TLB fault handling.
496 2077
497 The kernel will try to allocate memo !! 2078 If unsure, say N.
498 local memory of the CPU and add some <<
499 2079
500 config NODES_SHIFT !! 2080 config ZBOOT_LOAD_ADDRESS
501 int "Maximum NUMA Nodes (as a power of !! 2081 hex "Compressed kernel load address"
502 range 1 10 !! 2082 default 0xffffffff80400000 if BCM47XX
503 default "2" !! 2083 default 0x0
504 depends on NUMA !! 2084 depends on SYS_SUPPORTS_ZBOOT
505 help 2085 help
506 Specify the maximum number of NUMA N !! 2086 The address to load compressed kernel, aka vmlinuz.
507 system. Increases memory reserved t !! 2087
>> 2088 This is only used if non-zero.
>> 2089
>> 2090 choice
>> 2091 prompt "Kernel page size"
>> 2092 default PAGE_SIZE_4KB
>> 2093
>> 2094 config PAGE_SIZE_4KB
>> 2095 bool "4kB"
>> 2096 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
>> 2097 help
>> 2098 This option select the standard 4kB Linux page size. On some
>> 2099 R3000-family processors this is the only available page size. Using
>> 2100 4kB page size will minimize memory consumption and is therefore
>> 2101 recommended for low memory systems.
>> 2102
>> 2103 config PAGE_SIZE_8KB
>> 2104 bool "8kB"
>> 2105 depends on CPU_CAVIUM_OCTEON
>> 2106 depends on !MIPS_VA_BITS_48
>> 2107 help
>> 2108 Using 8kB page size will result in higher performance kernel at
>> 2109 the price of higher memory consumption. This option is available
>> 2110 only on cnMIPS processors. Note that you will need a suitable Linux
>> 2111 distribution to support this.
>> 2112
>> 2113 config PAGE_SIZE_16KB
>> 2114 bool "16kB"
>> 2115 depends on !CPU_R3000
>> 2116 help
>> 2117 Using 16kB page size will result in higher performance kernel at
>> 2118 the price of higher memory consumption. This option is available on
>> 2119 all non-R3000 family processors. Note that you will need a suitable
>> 2120 Linux distribution to support this.
>> 2121
>> 2122 config PAGE_SIZE_32KB
>> 2123 bool "32kB"
>> 2124 depends on CPU_CAVIUM_OCTEON
>> 2125 depends on !MIPS_VA_BITS_48
>> 2126 help
>> 2127 Using 32kB page size will result in higher performance kernel at
>> 2128 the price of higher memory consumption. This option is available
>> 2129 only on cnMIPS cores. Note that you will need a suitable Linux
>> 2130 distribution to support this.
>> 2131
>> 2132 config PAGE_SIZE_64KB
>> 2133 bool "64kB"
>> 2134 depends on !CPU_R3000
>> 2135 help
>> 2136 Using 64kB page size will result in higher performance kernel at
>> 2137 the price of higher memory consumption. This option is available on
>> 2138 all non-R3000 family processor. Not that at the time of this
>> 2139 writing this option is still high experimental.
>> 2140
>> 2141 endchoice
>> 2142
>> 2143 config FORCE_MAX_ZONEORDER
>> 2144 int "Maximum zone order"
>> 2145 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2146 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2147 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2148 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2149 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2150 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2151 range 0 64
>> 2152 default "11"
>> 2153 help
>> 2154 The kernel memory allocator divides physically contiguous memory
>> 2155 blocks into "zones", where each zone is a power of two number of
>> 2156 pages. This option selects the largest power of two that the kernel
>> 2157 keeps in the memory allocator. If you need to allocate very large
>> 2158 blocks of physically contiguous memory, then you may need to
>> 2159 increase this value.
508 2160
509 config RISCV_ALTERNATIVE !! 2161 This config option is actually maximum order plus one. For example,
>> 2162 a value of 11 means that the largest free memory block is 2^10 pages.
>> 2163
>> 2164 The page size is not necessarily 4KB. Keep this in mind
>> 2165 when choosing a value for this option.
>> 2166
>> 2167 config BOARD_SCACHE
510 bool 2168 bool
511 depends on !XIP_KERNEL <<
512 help <<
513 This Kconfig allows the kernel to au <<
514 erratum or cpufeature required by th <<
515 time. The code patching overhead is <<
516 once at boot and once on each module <<
517 2169
518 config RISCV_ALTERNATIVE_EARLY !! 2170 config IP22_CPU_SCACHE
519 bool 2171 bool
520 depends on RISCV_ALTERNATIVE !! 2172 select BOARD_SCACHE
521 help <<
522 Allows early patching of the kernel <<
523 2173
524 config RISCV_ISA_C !! 2174 #
525 bool "Emit compressed instructions whe !! 2175 # Support for a MIPS32 / MIPS64 style S-caches
526 default y !! 2176 #
527 help !! 2177 config MIPS_CPU_SCACHE
528 Adds "C" to the ISA subsets that the !! 2178 bool
529 when building Linux, which results i !! 2179 select BOARD_SCACHE
530 Linux binary. !! 2180
531 !! 2181 config R5000_CPU_SCACHE
532 If you don't know what to do here, s !! 2182 bool
533 !! 2183 select BOARD_SCACHE
534 config RISCV_ISA_SVNAPOT !! 2184
535 bool "Svnapot extension support for su !! 2185 config RM7000_CPU_SCACHE
536 depends on 64BIT && MMU !! 2186 bool
537 depends on RISCV_ALTERNATIVE !! 2187 select BOARD_SCACHE
538 default y !! 2188
>> 2189 config SIBYTE_DMA_PAGEOPS
>> 2190 bool "Use DMA to clear/copy pages"
>> 2191 depends on CPU_SB1
539 help 2192 help
540 Allow kernel to detect the Svnapot I !! 2193 Instead of using the CPU to zero and copy pages, use a Data Mover
541 time and enable its usage. !! 2194 channel. These DMA channels are otherwise unused by the standard
>> 2195 SiByte Linux port. Seems to give a small performance benefit.
>> 2196
>> 2197 config CPU_HAS_PREFETCH
>> 2198 bool
542 2199
543 The Svnapot extension is used to mar !! 2200 config CPU_GENERIC_DUMP_TLB
544 of contiguous virtual-to-physical tr !! 2201 bool
545 aligned power-of-2 (NAPOT) granulari !! 2202 default y if !CPU_R3000
546 size. When HUGETLBFS is also selecte !! 2203
547 allocates some memory for each NAPOT !! 2204 config MIPS_FP_SUPPORT
548 When optimizing for low memory consu !! 2205 bool "Floating Point support" if EXPERT
549 the Svnapot extension, it may be bet <<
550 <<
551 If you don't know what to do here, s <<
552 <<
553 config RISCV_ISA_SVPBMT <<
554 bool "Svpbmt extension support for sup <<
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y 2206 default y
558 help 2207 help
559 Adds support to dynamically detect !! 2208 Select y to include support for floating point in the kernel
560 ISA-extension (Supervisor-mode: pag !! 2209 including initialization of FPU hardware, FP context save & restore
561 enable its usage. !! 2210 and emulation of an FPU where necessary. Without this support any
>> 2211 userland program attempting to use floating point instructions will
>> 2212 receive a SIGILL.
562 2213
563 The memory type for a page contains !! 2214 If you know that your userland will not attempt to use floating point
564 that indicate the cacheability, ide !! 2215 instructions then you can say n here to shrink the kernel a little.
565 properties for access to that page. <<
566 2216
567 The Svpbmt extension is only availa !! 2217 If unsure, say y.
568 2218
569 If you don't know what to do here, !! 2219 config CPU_R2300_FPU
>> 2220 bool
>> 2221 depends on MIPS_FP_SUPPORT
>> 2222 default y if CPU_R3000
570 2223
571 config TOOLCHAIN_HAS_V !! 2224 config CPU_R3K_TLB
572 bool 2225 bool
>> 2226
>> 2227 config CPU_R4K_FPU
>> 2228 bool
>> 2229 depends on MIPS_FP_SUPPORT
>> 2230 default y if !CPU_R2300_FPU
>> 2231
>> 2232 config CPU_R4K_CACHE_TLB
>> 2233 bool
>> 2234 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
>> 2235
>> 2236 config MIPS_MT_SMP
>> 2237 bool "MIPS MT SMP support (1 TC on each available VPE)"
573 default y 2238 default y
574 depends on !64BIT || $(cc-option,-mabi !! 2239 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
575 depends on !32BIT || $(cc-option,-mabi !! 2240 select CPU_MIPSR2_IRQ_VI
576 depends on LLD_VERSION >= 140000 || LD !! 2241 select CPU_MIPSR2_IRQ_EI
577 depends on AS_HAS_OPTION_ARCH !! 2242 select SYNC_R4K
578 !! 2243 select MIPS_MT
579 config RISCV_ISA_V !! 2244 select SMP
580 bool "VECTOR extension support" !! 2245 select SMP_UP
581 depends on TOOLCHAIN_HAS_V !! 2246 select SYS_SUPPORTS_SMP
582 depends on FPU !! 2247 select SYS_SUPPORTS_SCHED_SMT
583 select DYNAMIC_SIGFRAME !! 2248 select MIPS_PERF_SHARED_TC_COUNTERS
584 default y !! 2249 help
>> 2250 This is a kernel model which is known as SMVP. This is supported
>> 2251 on cores with the MT ASE and uses the available VPEs to implement
>> 2252 virtual processors which supports SMP. This is equivalent to the
>> 2253 Intel Hyperthreading feature. For further information go to
>> 2254 <http://www.imgtec.com/mips/mips-multithreading.asp>.
>> 2255
>> 2256 config MIPS_MT
>> 2257 bool
>> 2258
>> 2259 config SCHED_SMT
>> 2260 bool "SMT (multithreading) scheduler support"
>> 2261 depends on SYS_SUPPORTS_SCHED_SMT
>> 2262 default n
585 help 2263 help
586 Say N here if you want to disable al !! 2264 SMT scheduler support improves the CPU scheduler's decision making
587 in the kernel. !! 2265 when dealing with MIPS MT enabled cores at a cost of slightly
>> 2266 increased overhead in some places. If unsure say N here.
>> 2267
>> 2268 config SYS_SUPPORTS_SCHED_SMT
>> 2269 bool
588 2270
589 If you don't know what to do here, s !! 2271 config SYS_SUPPORTS_MULTITHREADING
>> 2272 bool
590 2273
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 2274 config MIPS_MT_FPAFF
592 bool "Enable userspace Vector by defau !! 2275 bool "Dynamic FPU affinity for FP-intensive threads"
593 depends on RISCV_ISA_V <<
594 default y 2276 default y
595 help !! 2277 depends on MIPS_MT_SMP
596 Say Y here if you want to enable Vec !! 2278
597 Otherwise, userspace has to make exp !! 2279 config MIPSR2_TO_R6_EMULATOR
598 Vector, or enable it via the sysctl !! 2280 bool "MIPS R2-to-R6 emulator"
599 !! 2281 depends on CPU_MIPSR6
600 If you don't know what to do here, s !! 2282 depends on MIPS_FP_SUPPORT
601 <<
602 config RISCV_ISA_V_UCOPY_THRESHOLD <<
603 int "Threshold size for vectorized use <<
604 depends on RISCV_ISA_V <<
605 default 768 <<
606 help <<
607 Prefer using vectorized copy_to_user <<
608 workload size exceeds this value. <<
609 <<
610 config RISCV_ISA_V_PREEMPTIVE <<
611 bool "Run kernel-mode Vector with kern <<
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y 2283 default y
615 help 2284 help
616 Usually, in-kernel SIMD routines are !! 2285 Choose this option if you want to run non-R6 MIPS userland code.
617 Functions which envoke long running !! 2286 Even if you say 'Y' here, the emulator will still be disabled by
618 vector unit to prevent blocking othe !! 2287 default. You can enable it using the 'mipsr2emu' kernel option.
619 !! 2288 The only reason this is a build-time option is to save ~14K from the
620 This config allows kernel to run SIM !! 2289 final kernel image.
621 preemption. Enabling this config wil !! 2290
622 consumption due to the allocation of !! 2291 config SYS_SUPPORTS_VPE_LOADER
623 !! 2292 bool
624 config RISCV_ISA_ZAWRS !! 2293 depends on SYS_SUPPORTS_MULTITHREADING
625 bool "Zawrs extension support for more <<
626 depends on RISCV_ALTERNATIVE <<
627 default y <<
628 help 2294 help
629 The Zawrs extension defines instruct !! 2295 Indicates that the platform supports the VPE loader, and provides
630 which allow a hart to enter a low-po !! 2296 physical_memsize.
631 hypervisor while waiting on a store <<
632 use of these instructions in the ker <<
633 detected at boot. <<
634 2297
635 If you don't know what to do here, s !! 2298 config MIPS_VPE_LOADER
>> 2299 bool "VPE loader support."
>> 2300 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
>> 2301 select CPU_MIPSR2_IRQ_VI
>> 2302 select CPU_MIPSR2_IRQ_EI
>> 2303 select MIPS_MT
>> 2304 help
>> 2305 Includes a loader for loading an elf relocatable object
>> 2306 onto another VPE and running it.
636 2307
637 config TOOLCHAIN_HAS_ZBB !! 2308 config MIPS_VPE_LOADER_CMP
638 bool 2309 bool
639 default y !! 2310 default "y"
640 depends on !64BIT || $(cc-option,-mabi !! 2311 depends on MIPS_VPE_LOADER && MIPS_CMP
641 depends on !32BIT || $(cc-option,-mabi <<
642 depends on LLD_VERSION >= 150000 || LD <<
643 depends on AS_HAS_OPTION_ARCH <<
644 <<
645 # This symbol indicates that the toolchain sup <<
646 # extensions, including Zvk*, Zvbb, and Zvbc. <<
647 # binutils added all except Zvkb, then added Z <<
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO <<
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 2312
652 config RISCV_ISA_ZBA !! 2313 config MIPS_VPE_LOADER_MT
653 bool "Zba extension support for bit ma !! 2314 bool
>> 2315 default "y"
>> 2316 depends on MIPS_VPE_LOADER && !MIPS_CMP
>> 2317
>> 2318 config MIPS_VPE_LOADER_TOM
>> 2319 bool "Load VPE program into memory hidden from linux"
>> 2320 depends on MIPS_VPE_LOADER
654 default y 2321 default y
655 help 2322 help
656 Add support for enabling optimisati !! 2323 The loader can use memory that is present but has been hidden from
657 extension is detected at boot. !! 2324 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2325 you to ensure the amount you put in the option and the space your
>> 2326 program requires is less or equal to the amount physically present.
658 2327
659 The Zba extension provides instruct !! 2328 config MIPS_VPE_APSP_API
660 of addresses that index into arrays !! 2329 bool "Enable support for AP/SP API (RTLX)"
>> 2330 depends on MIPS_VPE_LOADER
661 2331
662 If you don't know what to do here, !! 2332 config MIPS_VPE_APSP_API_CMP
>> 2333 bool
>> 2334 default "y"
>> 2335 depends on MIPS_VPE_APSP_API && MIPS_CMP
663 2336
664 config RISCV_ISA_ZBB !! 2337 config MIPS_VPE_APSP_API_MT
665 bool "Zbb extension support for bit ma !! 2338 bool
666 depends on TOOLCHAIN_HAS_ZBB !! 2339 default "y"
667 depends on RISCV_ALTERNATIVE !! 2340 depends on MIPS_VPE_APSP_API && !MIPS_CMP
668 default y !! 2341
>> 2342 config MIPS_CMP
>> 2343 bool "MIPS CMP framework support (DEPRECATED)"
>> 2344 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
>> 2345 select SMP
>> 2346 select SYNC_R4K
>> 2347 select SYS_SUPPORTS_SMP
>> 2348 select WEAK_ORDERING
>> 2349 default n
669 help 2350 help
670 Adds support to dynamically detect !! 2351 Select this if you are using a bootloader which implements the "CMP
671 extension (basic bit manipulation) !! 2352 framework" protocol (ie. YAMON) and want your kernel to make use of
>> 2353 its ability to start secondary CPUs.
>> 2354
>> 2355 Unless you have a specific need, you should use CONFIG_MIPS_CPS
>> 2356 instead of this.
>> 2357
>> 2358 config MIPS_CPS
>> 2359 bool "MIPS Coherent Processing System support"
>> 2360 depends on SYS_SUPPORTS_MIPS_CPS
>> 2361 select MIPS_CM
>> 2362 select MIPS_CPS_PM if HOTPLUG_CPU
>> 2363 select SMP
>> 2364 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
>> 2365 select SYS_SUPPORTS_HOTPLUG_CPU
>> 2366 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
>> 2367 select SYS_SUPPORTS_SMP
>> 2368 select WEAK_ORDERING
>> 2369 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
>> 2370 help
>> 2371 Select this if you wish to run an SMP kernel across multiple cores
>> 2372 within a MIPS Coherent Processing System. When this option is
>> 2373 enabled the kernel will probe for other cores and boot them with
>> 2374 no external assistance. It is safe to enable this when hardware
>> 2375 support is unavailable.
672 2376
673 The Zbb extension provides instruct !! 2377 config MIPS_CPS_PM
674 of bit-specific operations (count b !! 2378 depends on MIPS_CPS
675 bitrotation, etc). !! 2379 bool
676 2380
677 If you don't know what to do here, !! 2381 config MIPS_CM
>> 2382 bool
>> 2383 select MIPS_CPC
678 2384
679 config TOOLCHAIN_HAS_ZBC !! 2385 config MIPS_CPC
680 bool 2386 bool
>> 2387
>> 2388 config SB1_PASS_2_WORKAROUNDS
>> 2389 bool
>> 2390 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
681 default y 2391 default y
682 depends on !64BIT || $(cc-option,-mabi !! 2392
683 depends on !32BIT || $(cc-option,-mabi !! 2393 config SB1_PASS_2_1_WORKAROUNDS
684 depends on LLD_VERSION >= 150000 || LD !! 2394 bool
685 depends on AS_HAS_OPTION_ARCH !! 2395 depends on CPU_SB1 && CPU_SB1_PASS_2
686 <<
687 config RISCV_ISA_ZBC <<
688 bool "Zbc extension support for carry- <<
689 depends on TOOLCHAIN_HAS_ZBC <<
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 2396 default y
>> 2397
>> 2398 choice
>> 2399 prompt "SmartMIPS or microMIPS ASE support"
>> 2400
>> 2401 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
>> 2402 bool "None"
693 help 2403 help
694 Adds support to dynamically detect !! 2404 Select this if you want neither microMIPS nor SmartMIPS support
695 extension (carry-less multiplicatio <<
696 2405
697 The Zbc extension could accelerate !! 2406 config CPU_HAS_SMARTMIPS
698 calculations. !! 2407 depends on SYS_SUPPORTS_SMARTMIPS
>> 2408 bool "SmartMIPS"
>> 2409 help
>> 2410 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2411 increased security at both hardware and software level for
>> 2412 smartcards. Enabling this option will allow proper use of the
>> 2413 SmartMIPS instructions by Linux applications. However a kernel with
>> 2414 this option will not work on a MIPS core without SmartMIPS core. If
>> 2415 you don't know you probably don't have SmartMIPS and should say N
>> 2416 here.
699 2417
700 If you don't know what to do here, !! 2418 config CPU_MICROMIPS
>> 2419 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
>> 2420 bool "microMIPS"
>> 2421 help
>> 2422 When this option is enabled the kernel will be built using the
>> 2423 microMIPS ISA
701 2424
702 config RISCV_ISA_ZICBOM !! 2425 endchoice
703 bool "Zicbom extension support for non !! 2426
704 depends on MMU !! 2427 config CPU_HAS_MSA
705 depends on RISCV_ALTERNATIVE !! 2428 bool "Support for the MIPS SIMD Architecture"
706 default y !! 2429 depends on CPU_SUPPORTS_MSA
707 select RISCV_DMA_NONCOHERENT !! 2430 depends on MIPS_FP_SUPPORT
708 select DMA_DIRECT_REMAP !! 2431 depends on 64BIT || MIPS_O32_FP64_SUPPORT
>> 2432 help
>> 2433 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
>> 2434 and a set of SIMD instructions to operate on them. When this option
>> 2435 is enabled the kernel will support allocating & switching MSA
>> 2436 vector register contexts. If you know that your kernel will only be
>> 2437 running on CPUs which do not support MSA or that your userland will
>> 2438 not be making use of it then you may wish to say N here to reduce
>> 2439 the size & complexity of your kernel.
>> 2440
>> 2441 If unsure, say Y.
>> 2442
>> 2443 config CPU_HAS_WB
>> 2444 bool
>> 2445
>> 2446 config XKS01
>> 2447 bool
>> 2448
>> 2449 config CPU_HAS_DIEI
>> 2450 depends on !CPU_DIEI_BROKEN
>> 2451 bool
>> 2452
>> 2453 config CPU_DIEI_BROKEN
>> 2454 bool
>> 2455
>> 2456 config CPU_HAS_RIXI
>> 2457 bool
>> 2458
>> 2459 config CPU_NO_LOAD_STORE_LR
>> 2460 bool
709 help 2461 help
710 Adds support to dynamically detect !! 2462 CPU lacks support for unaligned load and store instructions:
711 extension (Cache Block Management O !! 2463 LWL, LWR, SWL, SWR (Load/store word left/right).
712 usage. !! 2464 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
>> 2465 systems).
713 2466
714 The Zicbom extension can be used to !! 2467 #
715 non-coherent DMA support on devices !! 2468 # Vectored interrupt mode is an R2 feature
>> 2469 #
>> 2470 config CPU_MIPSR2_IRQ_VI
>> 2471 bool
716 2472
717 If you don't know what to do here, !! 2473 #
>> 2474 # Extended interrupt mode is an R2 feature
>> 2475 #
>> 2476 config CPU_MIPSR2_IRQ_EI
>> 2477 bool
718 2478
719 config RISCV_ISA_ZICBOZ !! 2479 config CPU_HAS_SYNC
720 bool "Zicboz extension support for fas !! 2480 bool
721 depends on RISCV_ALTERNATIVE !! 2481 depends on !CPU_R3000
722 default y 2482 default y
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 2483
727 The Zicboz extension is used for fa !! 2484 #
>> 2485 # CPU non-features
>> 2486 #
>> 2487
>> 2488 # Work around the "daddi" and "daddiu" CPU errata:
>> 2489 #
>> 2490 # - The `daddi' instruction fails to trap on overflow.
>> 2491 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2492 # erratum #23
>> 2493 #
>> 2494 # - The `daddiu' instruction can produce an incorrect result.
>> 2495 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2496 # erratum #41
>> 2497 # "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
>> 2498 # #15
>> 2499 # "MIPS R4400PC/SC Errata, Processor Revision 1.0", erratum #7
>> 2500 # "MIPS R4400MC Errata, Processor Revision 1.0", erratum #5
>> 2501 config CPU_DADDI_WORKAROUNDS
>> 2502 bool
>> 2503
>> 2504 # Work around certain R4000 CPU errata (as implemented by GCC):
>> 2505 #
>> 2506 # - A double-word or a variable shift may give an incorrect result
>> 2507 # if executed immediately after starting an integer division:
>> 2508 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2509 # erratum #28
>> 2510 # "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
>> 2511 # #19
>> 2512 #
>> 2513 # - A double-word or a variable shift may give an incorrect result
>> 2514 # if executed while an integer multiplication is in progress:
>> 2515 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2516 # errata #16 & #28
>> 2517 #
>> 2518 # - An integer division may give an incorrect result if started in
>> 2519 # a delay slot of a taken branch or a jump:
>> 2520 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2521 # erratum #52
>> 2522 config CPU_R4000_WORKAROUNDS
>> 2523 bool
>> 2524 select CPU_R4400_WORKAROUNDS
728 2525
729 If you don't know what to do here, !! 2526 # Work around certain R4400 CPU errata (as implemented by GCC):
>> 2527 #
>> 2528 # - A double-word or a variable shift may give an incorrect result
>> 2529 # if executed immediately after starting an integer division:
>> 2530 # "MIPS R4400MC Errata, Processor Revision 1.0", erratum #10
>> 2531 # "MIPS R4400MC Errata, Processor Revision 2.0 & 3.0", erratum #4
>> 2532 config CPU_R4400_WORKAROUNDS
>> 2533 bool
730 2534
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 2535 config CPU_R4X00_BUGS64
732 def_bool y !! 2536 bool
733 # https://sourceware.org/git/?p=binuti !! 2537 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
734 # https://gcc.gnu.org/git/?p=gcc.git;a !! 2538
735 depends on AS_IS_GNU && AS_VERSION >= !! 2539 config MIPS_ASID_SHIFT
736 help !! 2540 int
737 Binutils-2.38 and GCC-12.1.0 bumped !! 2541 default 6 if CPU_R3000
738 20191213 version, which moves some i !! 2542 default 0
739 the Zicsr and Zifencei extensions. T !! 2543
740 Zicsr and Zifencei when binutils >= !! 2544 config MIPS_ASID_BITS
741 and Zifencei are supported in binuti !! 2545 int
742 To make life easier, and avoid forci !! 2546 default 0 if MIPS_ASID_BITS_VARIABLE
743 newer ISA spec to version 2.2, relax !! 2547 default 6 if CPU_R3000
744 For clang < 17 or GCC < 11.3.0, for !! 2548 default 8
745 special treatment, this is dealt wit !! 2549
>> 2550 config MIPS_ASID_BITS_VARIABLE
>> 2551 bool
>> 2552
>> 2553 config MIPS_CRC_SUPPORT
>> 2554 bool
>> 2555
>> 2556 # R4600 erratum. Due to the lack of errata information the exact
>> 2557 # technical details aren't known. I've experimentally found that disabling
>> 2558 # interrupts during indexed I-cache flushes seems to be sufficient to deal
>> 2559 # with the issue.
>> 2560 config WAR_R4600_V1_INDEX_ICACHEOP
>> 2561 bool
>> 2562
>> 2563 # Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata:
>> 2564 #
>> 2565 # 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
>> 2566 # Hit_Invalidate_D and Create_Dirty_Excl_D should only be
>> 2567 # executed if there is no other dcache activity. If the dcache is
>> 2568 # accessed for another instruction immediately preceding when these
>> 2569 # cache instructions are executing, it is possible that the dcache
>> 2570 # tag match outputs used by these cache instructions will be
>> 2571 # incorrect. These cache instructions should be preceded by at least
>> 2572 # four instructions that are not any kind of load or store
>> 2573 # instruction.
>> 2574 #
>> 2575 # This is not allowed: lw
>> 2576 # nop
>> 2577 # nop
>> 2578 # nop
>> 2579 # cache Hit_Writeback_Invalidate_D
>> 2580 #
>> 2581 # This is allowed: lw
>> 2582 # nop
>> 2583 # nop
>> 2584 # nop
>> 2585 # nop
>> 2586 # cache Hit_Writeback_Invalidate_D
>> 2587 config WAR_R4600_V1_HIT_CACHEOP
>> 2588 bool
>> 2589
>> 2590 # Writeback and invalidate the primary cache dcache before DMA.
>> 2591 #
>> 2592 # R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
>> 2593 # Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
>> 2594 # operate correctly if the internal data cache refill buffer is empty. These
>> 2595 # CACHE instructions should be separated from any potential data cache miss
>> 2596 # by a load instruction to an uncached address to empty the response buffer."
>> 2597 # (Revision 2.0 device errata from IDT available on https://www.idt.com/
>> 2598 # in .pdf format.)
>> 2599 config WAR_R4600_V2_HIT_CACHEOP
>> 2600 bool
>> 2601
>> 2602 # From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
>> 2603 # the line which this instruction itself exists, the following
>> 2604 # operation is not guaranteed."
>> 2605 #
>> 2606 # Workaround: do two phase flushing for Index_Invalidate_I
>> 2607 config WAR_TX49XX_ICACHE_INDEX_INV
>> 2608 bool
>> 2609
>> 2610 # The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
>> 2611 # opposes it being called that) where invalid instructions in the same
>> 2612 # I-cache line worth of instructions being fetched may case spurious
>> 2613 # exceptions.
>> 2614 config WAR_ICACHE_REFILLS
>> 2615 bool
>> 2616
>> 2617 # On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
>> 2618 # may cause ll / sc and lld / scd sequences to execute non-atomically.
>> 2619 config WAR_R10000_LLSC
>> 2620 bool
>> 2621
>> 2622 # 34K core erratum: "Problems Executing the TLBR Instruction"
>> 2623 config WAR_MIPS34K_MISSED_ITLB
>> 2624 bool
>> 2625
>> 2626 #
>> 2627 # - Highmem only makes sense for the 32-bit kernel.
>> 2628 # - The current highmem code will only work properly on physically indexed
>> 2629 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2630 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2631 # moment we protect the user and offer the highmem option only on machines
>> 2632 # where it's known to be safe. This will not offer highmem on a few systems
>> 2633 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2634 # indexed CPUs but we're playing safe.
>> 2635 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2636 # know they might have memory configurations that could make use of highmem
>> 2637 # support.
>> 2638 #
>> 2639 config HIGHMEM
>> 2640 bool "High Memory Support"
>> 2641 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
>> 2642 select KMAP_LOCAL
>> 2643
>> 2644 config CPU_SUPPORTS_HIGHMEM
>> 2645 bool
>> 2646
>> 2647 config SYS_SUPPORTS_HIGHMEM
>> 2648 bool
>> 2649
>> 2650 config SYS_SUPPORTS_SMARTMIPS
>> 2651 bool
>> 2652
>> 2653 config SYS_SUPPORTS_MICROMIPS
>> 2654 bool
>> 2655
>> 2656 config SYS_SUPPORTS_MIPS16
>> 2657 bool
>> 2658 help
>> 2659 This option must be set if a kernel might be executed on a MIPS16-
>> 2660 enabled CPU even if MIPS16 is not actually being used. In other
>> 2661 words, it makes the kernel MIPS16-tolerant.
>> 2662
>> 2663 config CPU_SUPPORTS_MSA
>> 2664 bool
746 2665
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 2666 config ARCH_FLATMEM_ENABLE
748 def_bool y 2667 def_bool y
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 2668 depends on !NUMA && !CPU_LOONGSON2EF
750 # https://github.com/llvm/llvm-project <<
751 # https://gcc.gnu.org/git/?p=gcc.git;a <<
752 depends on (CC_IS_CLANG && CLANG_VERSI <<
753 help <<
754 Certain versions of clang and GCC do <<
755 -march. This option causes an older <<
756 versions of clang and GCC to be pass <<
757 as passing zicsr and zifencei to -ma <<
758 2669
759 config FPU !! 2670 config ARCH_SPARSEMEM_ENABLE
760 bool "FPU support" !! 2671 bool
761 default y !! 2672
>> 2673 config NUMA
>> 2674 bool "NUMA Support"
>> 2675 depends on SYS_SUPPORTS_NUMA
>> 2676 select SMP
>> 2677 select HAVE_SETUP_PER_CPU_AREA
>> 2678 select NEED_PER_CPU_EMBED_FIRST_CHUNK
762 help 2679 help
763 Say N here if you want to disable al !! 2680 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
764 in the kernel. !! 2681 Access). This option improves performance on systems with more
>> 2682 than two nodes; on two node systems it is generally better to
>> 2683 leave it disabled; on single node systems leave this option
>> 2684 disabled.
765 2685
766 If you don't know what to do here, s !! 2686 config SYS_SUPPORTS_NUMA
>> 2687 bool
>> 2688
>> 2689 config HAVE_ARCH_NODEDATA_EXTENSION
>> 2690 bool
>> 2691
>> 2692 config RELOCATABLE
>> 2693 bool "Relocatable kernel"
>> 2694 depends on SYS_SUPPORTS_RELOCATABLE
>> 2695 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
>> 2696 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
>> 2697 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
>> 2698 CPU_P5600 || CAVIUM_OCTEON_SOC || \
>> 2699 CPU_LOONGSON64
>> 2700 help
>> 2701 This builds a kernel image that retains relocation information
>> 2702 so it can be loaded someplace besides the default 1MB.
>> 2703 The relocations make the kernel binary about 15% larger,
>> 2704 but are discarded at runtime
>> 2705
>> 2706 config RELOCATION_TABLE_SIZE
>> 2707 hex "Relocation table size"
>> 2708 depends on RELOCATABLE
>> 2709 range 0x0 0x01000000
>> 2710 default "0x00200000" if CPU_LOONGSON64
>> 2711 default "0x00100000"
>> 2712 help
>> 2713 A table of relocation data will be appended to the kernel binary
>> 2714 and parsed at boot to fix up the relocated kernel.
767 2715
768 config IRQ_STACKS !! 2716 This option allows the amount of space reserved for the table to be
769 bool "Independent irq & softirq stacks !! 2717 adjusted, although the default of 1Mb should be ok in most cases.
>> 2718
>> 2719 The build will fail and a valid size suggested if this is too small.
>> 2720
>> 2721 If unsure, leave at the default value.
>> 2722
>> 2723 config RANDOMIZE_BASE
>> 2724 bool "Randomize the address of the kernel image"
>> 2725 depends on RELOCATABLE
>> 2726 help
>> 2727 Randomizes the physical and virtual address at which the
>> 2728 kernel image is loaded, as a security feature that
>> 2729 deters exploit attempts relying on knowledge of the location
>> 2730 of kernel internals.
>> 2731
>> 2732 Entropy is generated using any coprocessor 0 registers available.
>> 2733
>> 2734 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
>> 2735
>> 2736 If unsure, say N.
>> 2737
>> 2738 config RANDOMIZE_BASE_MAX_OFFSET
>> 2739 hex "Maximum kASLR offset" if EXPERT
>> 2740 depends on RANDOMIZE_BASE
>> 2741 range 0x0 0x40000000 if EVA || 64BIT
>> 2742 range 0x0 0x08000000
>> 2743 default "0x01000000"
>> 2744 help
>> 2745 When kASLR is active, this provides the maximum offset that will
>> 2746 be applied to the kernel image. It should be set according to the
>> 2747 amount of physical RAM available in the target system minus
>> 2748 PHYSICAL_START and must be a power of 2.
>> 2749
>> 2750 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
>> 2751 EVA or 64-bit. The default is 16Mb.
>> 2752
>> 2753 config NODES_SHIFT
>> 2754 int
>> 2755 default "6"
>> 2756 depends on NUMA
>> 2757
>> 2758 config HW_PERF_EVENTS
>> 2759 bool "Enable hardware performance counter support for perf events"
>> 2760 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_LOONGSON64)
770 default y 2761 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 2762 help
774 Add independent irq & softirq stacks !! 2763 Enable hardware performance counter support for perf events. If
775 overflows. We may save some memory f !! 2764 disabled, perf events will use software events only.
776 2765
777 config THREAD_SIZE_ORDER !! 2766 config DMI
778 int "Kernel stack size (in power-of-tw !! 2767 bool "Enable DMI scanning"
779 range 0 4 !! 2768 depends on MACH_LOONGSON64
780 default 1 if 32BIT !! 2769 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
781 default 2 !! 2770 default y
782 help 2771 help
783 Specify the Pages of thread stack si !! 2772 Enabled scanning of DMI to identify machine quirks. Say Y
784 affects irq stack size, which is equ !! 2773 here unless you have verified that your setup is not
>> 2774 affected by entries in the DMI blacklist. Required by PNP
>> 2775 BIOS code.
785 2776
786 config RISCV_MISALIGNED !! 2777 config SMP
787 bool !! 2778 bool "Multi-Processing support"
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 2779 depends on SYS_SUPPORTS_SMP
789 help 2780 help
790 Embed support for emulating misalign !! 2781 This enables support for systems with more than one CPU. If you have
>> 2782 a system with only one CPU, say N. If you have a system with more
>> 2783 than one CPU, say Y.
>> 2784
>> 2785 If you say N here, the kernel will run on uni- and multiprocessor
>> 2786 machines, but will use only one CPU of a multiprocessor machine. If
>> 2787 you say Y here, the kernel will run on many, but not all,
>> 2788 uniprocessor machines. On a uniprocessor machine, the kernel
>> 2789 will run faster if you say N here.
791 2790
792 choice !! 2791 People using multiprocessor machines who say Y here should also say
793 prompt "Unaligned Accesses Support" !! 2792 Y to "Enhanced Real Time Clock Support", below.
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 2793
>> 2794 See also the SMP-HOWTO available at
>> 2795 <https://www.tldp.org/docs.html#howto>.
>> 2796
>> 2797 If you don't know what to do here, say N.
>> 2798
>> 2799 config HOTPLUG_CPU
>> 2800 bool "Support for hot-pluggable CPUs"
>> 2801 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
795 help 2802 help
796 This determines the level of support !! 2803 Say Y here to allow turning CPUs off and on. CPUs can be
797 information is used by the kernel to !! 2804 controlled through /sys/devices/system/cpu.
798 exposed to user space via the hwprob !! 2805 (Note: power management support will enable this option
799 probed at boot by default. !! 2806 automatically on SMP systems. )
800 !! 2807 Say N if you want to disable CPU hotplug.
801 config RISCV_PROBE_UNALIGNED_ACCESS <<
802 bool "Probe for hardware unaligned acc <<
803 select RISCV_MISALIGNED <<
804 help <<
805 During boot, the kernel will run a s <<
806 speed of unaligned accesses. This pr <<
807 the speed of unaligned accesses on t <<
808 memory accesses trap into the kernel <<
809 system, the kernel will emulate the <<
810 UABI. <<
811 <<
812 config RISCV_EMULATED_UNALIGNED_ACCESS <<
813 bool "Emulate unaligned access where s <<
814 select RISCV_MISALIGNED <<
815 help <<
816 If unaligned memory accesses trap in <<
817 supported by the system, the kernel <<
818 accesses to preserve the UABI. When <<
819 unaligned accesses, the unaligned ac <<
820 <<
821 config RISCV_SLOW_UNALIGNED_ACCESS <<
822 bool "Assume the system supports slow <<
823 depends on NONPORTABLE <<
824 help <<
825 Assume that the system supports slow <<
826 kernel and userspace programs may no <<
827 that do not support unaligned memory <<
828 <<
829 config RISCV_EFFICIENT_UNALIGNED_ACCESS <<
830 bool "Assume the system supports fast <<
831 depends on NONPORTABLE <<
832 select DCACHE_WORD_ACCESS if MMU <<
833 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
834 help <<
835 Assume that the system supports fast <<
836 enabled, this option improves the pe <<
837 systems. However, the kernel and use <<
838 slowly, or will not be able to run a <<
839 support efficient unaligned memory a <<
840 2808
841 endchoice !! 2809 config SMP_UP
>> 2810 bool
>> 2811
>> 2812 config SYS_SUPPORTS_MIPS_CMP
>> 2813 bool
842 2814
843 source "arch/riscv/Kconfig.vendor" !! 2815 config SYS_SUPPORTS_MIPS_CPS
>> 2816 bool
844 2817
845 endmenu # "Platform type" !! 2818 config SYS_SUPPORTS_SMP
>> 2819 bool
846 2820
847 menu "Kernel features" !! 2821 config NR_CPUS_DEFAULT_4
>> 2822 bool
848 2823
849 source "kernel/Kconfig.hz" !! 2824 config NR_CPUS_DEFAULT_8
>> 2825 bool
850 2826
851 config RISCV_SBI_V01 !! 2827 config NR_CPUS_DEFAULT_16
852 bool "SBI v0.1 support" !! 2828 bool
853 depends on RISCV_SBI !! 2829
854 help !! 2830 config NR_CPUS_DEFAULT_32
855 This config allows kernel to use SBI !! 2831 bool
856 deprecated in future once legacy M-m !! 2832
>> 2833 config NR_CPUS_DEFAULT_64
>> 2834 bool
857 2835
858 config RISCV_BOOT_SPINWAIT !! 2836 config NR_CPUS
859 bool "Spinwait booting method" !! 2837 int "Maximum number of CPUs (2-256)"
>> 2838 range 2 256
860 depends on SMP 2839 depends on SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 2840 default "4" if NR_CPUS_DEFAULT_4
>> 2841 default "8" if NR_CPUS_DEFAULT_8
>> 2842 default "16" if NR_CPUS_DEFAULT_16
>> 2843 default "32" if NR_CPUS_DEFAULT_32
>> 2844 default "64" if NR_CPUS_DEFAULT_64
>> 2845 help
>> 2846 This allows you to specify the maximum number of CPUs which this
>> 2847 kernel will support. The maximum supported value is 32 for 32-bit
>> 2848 kernel and 64 for 64-bit kernels; the minimum value which makes
>> 2849 sense is 1 for Qemu (useful only for kernel debugging purposes)
>> 2850 and 2 for all others.
>> 2851
>> 2852 This is purely to save memory - each supported CPU adds
>> 2853 approximately eight kilobytes to the kernel image. For best
>> 2854 performance should round up your number of processors to the next
>> 2855 power of two.
>> 2856
>> 2857 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2858 bool
>> 2859
>> 2860 config MIPS_NR_CPU_NR_MAP_1024
>> 2861 bool
>> 2862
>> 2863 config MIPS_NR_CPU_NR_MAP
>> 2864 int
>> 2865 depends on SMP
>> 2866 default 1024 if MIPS_NR_CPU_NR_MAP_1024
>> 2867 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
>> 2868
>> 2869 #
>> 2870 # Timer Interrupt Frequency Configuration
>> 2871 #
>> 2872
>> 2873 choice
>> 2874 prompt "Timer frequency"
>> 2875 default HZ_250
862 help 2876 help
863 This enables support for booting Lin !! 2877 Allows the configuration of the timer frequency.
864 spinwait method, all cores randomly <<
865 gets chosen via lottery and all othe <<
866 variable. This method cannot support <<
867 scheme. It should be only enabled fo <<
868 on older firmware without SBI HSM ex <<
869 rely on ordered booting via SBI HSM <<
870 dynamically at runtime if the firmwa <<
871 <<
872 Since spinwait is incompatible with <<
873 NR_CPUS be large enough to contain t <<
874 hart to enter Linux. <<
875 2878
876 If unsure what to do here, say N. !! 2879 config HZ_24
>> 2880 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
877 2881
878 config ARCH_SUPPORTS_KEXEC !! 2882 config HZ_48
879 def_bool y !! 2883 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
880 2884
881 config ARCH_SELECTS_KEXEC !! 2885 config HZ_100
882 def_bool y !! 2886 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 2887
886 config ARCH_SUPPORTS_KEXEC_FILE !! 2888 config HZ_128
887 def_bool 64BIT !! 2889 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
888 2890
889 config ARCH_SELECTS_KEXEC_FILE !! 2891 config HZ_250
890 def_bool y !! 2892 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
893 select KEXEC_ELF <<
894 2893
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 2894 config HZ_256
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 2895 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
897 2896
898 config ARCH_SUPPORTS_CRASH_DUMP !! 2897 config HZ_1000
899 def_bool y !! 2898 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
900 2899
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 2900 config HZ_1024
902 def_bool CRASH_RESERVE !! 2901 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
903 2902
904 config COMPAT !! 2903 endchoice
905 bool "Kernel support for 32-bit U-mode <<
906 default 64BIT <<
907 depends on 64BIT && MMU <<
908 help <<
909 This option enables support for a 32 <<
910 kernel at S-mode. riscv32-specific c <<
911 the user helper functions (vdso), si <<
912 ptrace interface are handled appropr <<
913 <<
914 If you want to execute 32-bit usersp <<
915 <<
916 config PARAVIRT <<
917 bool "Enable paravirtualization code" <<
918 depends on RISCV_SBI <<
919 help <<
920 This changes the kernel so it can mo <<
921 under a hypervisor, potentially impr <<
922 over full virtualization. <<
923 <<
924 config PARAVIRT_TIME_ACCOUNTING <<
925 bool "Paravirtual steal time accountin <<
926 depends on PARAVIRT <<
927 help <<
928 Select this option to enable fine gr <<
929 accounting. Time spent executing oth <<
930 the current vCPU is discounted from <<
931 that, there can be a small performan <<
932 2904
933 If in doubt, say N here. !! 2905 config SYS_SUPPORTS_24HZ
>> 2906 bool
934 2907
935 config RELOCATABLE !! 2908 config SYS_SUPPORTS_48HZ
936 bool "Build a relocatable kernel" !! 2909 bool
937 depends on MMU && 64BIT && !XIP_KERNEL <<
938 select MODULE_SECTIONS if MODULES <<
939 help <<
940 This builds a kernel as a Position I <<
941 which retains all relocation metadat <<
942 kernel binary at runtime to a differ <<
943 address it was linked at. <<
944 Since RISCV uses the RELA relocation <<
945 relocation pass at runtime even if t <<
946 same address it was linked at. <<
947 2910
948 If unsure, say N. !! 2911 config SYS_SUPPORTS_100HZ
>> 2912 bool
949 2913
950 config RANDOMIZE_BASE !! 2914 config SYS_SUPPORTS_128HZ
951 bool "Randomize the address of the ker !! 2915 bool
952 select RELOCATABLE !! 2916
953 depends on MMU && 64BIT && !XIP_KERNEL !! 2917 config SYS_SUPPORTS_250HZ
954 help !! 2918 bool
955 Randomizes the virtual address at wh !! 2919
956 loaded, as a security feature that d !! 2920 config SYS_SUPPORTS_256HZ
957 relying on knowledge of the location !! 2921 bool
958 !! 2922
959 It is the bootloader's job to provid !! 2923 config SYS_SUPPORTS_1000HZ
960 random u64 value in /chosen/kaslr-se !! 2924 bool
961 !! 2925
962 When booting via the UEFI stub, it w !! 2926 config SYS_SUPPORTS_1024HZ
963 EFI_RNG_PROTOCOL implementation (if !! 2927 bool
964 to the kernel proper. In addition, i !! 2928
965 location of the kernel Image as well !! 2929 config SYS_SUPPORTS_ARBIT_HZ
966 !! 2930 bool
967 If unsure, say N. !! 2931 default y if !SYS_SUPPORTS_24HZ && \
968 !! 2932 !SYS_SUPPORTS_48HZ && \
969 endmenu # "Kernel features" !! 2933 !SYS_SUPPORTS_100HZ && \
970 !! 2934 !SYS_SUPPORTS_128HZ && \
971 menu "Boot options" !! 2935 !SYS_SUPPORTS_250HZ && \
972 !! 2936 !SYS_SUPPORTS_256HZ && \
973 config CMDLINE !! 2937 !SYS_SUPPORTS_1000HZ && \
974 string "Built-in kernel command line" !! 2938 !SYS_SUPPORTS_1024HZ
975 help !! 2939
976 For most platforms, the arguments fo !! 2940 config HZ
977 are provided at run-time, during boo !! 2941 int
978 where either no arguments are being !! 2942 default 24 if HZ_24
979 arguments are insufficient or even i !! 2943 default 48 if HZ_48
>> 2944 default 100 if HZ_100
>> 2945 default 128 if HZ_128
>> 2946 default 250 if HZ_250
>> 2947 default 256 if HZ_256
>> 2948 default 1000 if HZ_1000
>> 2949 default 1024 if HZ_1024
>> 2950
>> 2951 config SCHED_HRTICK
>> 2952 def_bool HIGH_RES_TIMERS
>> 2953
>> 2954 config KEXEC
>> 2955 bool "Kexec system call"
>> 2956 select KEXEC_CORE
>> 2957 help
>> 2958 kexec is a system call that implements the ability to shutdown your
>> 2959 current kernel, and to start another kernel. It is like a reboot
>> 2960 but it is independent of the system firmware. And like a reboot
>> 2961 you can start any kernel with it, not just Linux.
>> 2962
>> 2963 The name comes from the similarity to the exec system call.
>> 2964
>> 2965 It is an ongoing process to be certain the hardware in a machine
>> 2966 is properly shutdown, so do not be surprised if this code does not
>> 2967 initially work for you. As of this writing the exact hardware
>> 2968 interface is strongly in flux, so no good recommendation can be
>> 2969 made.
>> 2970
>> 2971 config CRASH_DUMP
>> 2972 bool "Kernel crash dumps"
>> 2973 help
>> 2974 Generate crash dump after being started by kexec.
>> 2975 This should be normally only set in special crash dump kernels
>> 2976 which are loaded in the main kernel with kexec-tools into
>> 2977 a specially reserved region and then later executed after
>> 2978 a crash by kdump/kexec. The crash dump kernel must be compiled
>> 2979 to a memory address not used by the main kernel or firmware using
>> 2980 PHYSICAL_START.
>> 2981
>> 2982 config PHYSICAL_START
>> 2983 hex "Physical address where the kernel is loaded"
>> 2984 default "0xffffffff84000000"
>> 2985 depends on CRASH_DUMP
>> 2986 help
>> 2987 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
>> 2988 If you plan to use kernel for capturing the crash dump change
>> 2989 this value to start of the reserved region (the "X" value as
>> 2990 specified in the "crashkernel=YM@XM" command line boot parameter
>> 2991 passed to the panic-ed kernel).
>> 2992
>> 2993 config MIPS_O32_FP64_SUPPORT
>> 2994 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
>> 2995 depends on 32BIT || MIPS32_O32
>> 2996 help
>> 2997 When this is enabled, the kernel will support use of 64-bit floating
>> 2998 point registers with binaries using the O32 ABI along with the
>> 2999 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
>> 3000 32-bit MIPS systems this support is at the cost of increasing the
>> 3001 size and complexity of the compiled FPU emulator. Thus if you are
>> 3002 running a MIPS32 system and know that none of your userland binaries
>> 3003 will require 64-bit floating point, you may wish to reduce the size
>> 3004 of your kernel & potentially improve FP emulation performance by
>> 3005 saying N here.
>> 3006
>> 3007 Although binutils currently supports use of this flag the details
>> 3008 concerning its effect upon the O32 ABI in userland are still being
>> 3009 worked on. In order to avoid userland becoming dependent upon current
>> 3010 behaviour before the details have been finalised, this option should
>> 3011 be considered experimental and only enabled by those working upon
>> 3012 said details.
>> 3013
>> 3014 If unsure, say N.
>> 3015
>> 3016 config USE_OF
>> 3017 bool
>> 3018 select OF
>> 3019 select OF_EARLY_FLATTREE
>> 3020 select IRQ_DOMAIN
980 3021
981 When that occurs, it is possible to !! 3022 config UHI_BOOT
982 line here and choose how the kernel !! 3023 bool
>> 3024
>> 3025 config BUILTIN_DTB
>> 3026 bool
983 3027
984 choice 3028 choice
985 prompt "Built-in command line usage" !! 3029 prompt "Kernel appended dtb support" if USE_OF
986 depends on CMDLINE != "" !! 3030 default MIPS_NO_APPENDED_DTB
987 default CMDLINE_FALLBACK <<
988 help <<
989 Choose how the kernel will handle th <<
990 line. <<
991 <<
992 config CMDLINE_FALLBACK <<
993 bool "Use bootloader kernel arguments <<
994 help <<
995 Use the built-in command line as fal <<
996 during boot. This is the default beh <<
997 <<
998 config CMDLINE_EXTEND <<
999 bool "Extend bootloader kernel argumen <<
1000 help <<
1001 The command-line arguments provided <<
1002 appended to the built-in command li <<
1003 cases where the provided arguments <<
1004 you don't want to or cannot modify <<
1005 <<
1006 config CMDLINE_FORCE <<
1007 bool "Always use the default kernel c <<
1008 help <<
1009 Always use the built-in command lin <<
1010 boot. This is useful in case you ne <<
1011 command line on systems where you d <<
1012 over it. <<
1013 3031
>> 3032 config MIPS_NO_APPENDED_DTB
>> 3033 bool "None"
>> 3034 help
>> 3035 Do not enable appended dtb support.
>> 3036
>> 3037 config MIPS_ELF_APPENDED_DTB
>> 3038 bool "vmlinux"
>> 3039 help
>> 3040 With this option, the boot code will look for a device tree binary
>> 3041 DTB) included in the vmlinux ELF section .appended_dtb. By default
>> 3042 it is empty and the DTB can be appended using binutils command
>> 3043 objcopy:
>> 3044
>> 3045 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
>> 3046
>> 3047 This is meant as a backward compatibility convenience for those
>> 3048 systems with a bootloader that can't be upgraded to accommodate
>> 3049 the documented boot protocol using a device tree.
>> 3050
>> 3051 config MIPS_RAW_APPENDED_DTB
>> 3052 bool "vmlinux.bin or vmlinuz.bin"
>> 3053 help
>> 3054 With this option, the boot code will look for a device tree binary
>> 3055 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
>> 3056 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
>> 3057
>> 3058 This is meant as a backward compatibility convenience for those
>> 3059 systems with a bootloader that can't be upgraded to accommodate
>> 3060 the documented boot protocol using a device tree.
>> 3061
>> 3062 Beware that there is very little in terms of protection against
>> 3063 this option being confused by leftover garbage in memory that might
>> 3064 look like a DTB header after a reboot if no actual DTB is appended
>> 3065 to vmlinux.bin. Do not leave this option active in a production kernel
>> 3066 if you don't intend to always append a DTB.
1014 endchoice 3067 endchoice
1015 3068
1016 config EFI_STUB !! 3069 choice
1017 bool !! 3070 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
>> 3071 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
>> 3072 !MACH_LOONGSON64 && !MIPS_MALTA && \
>> 3073 !CAVIUM_OCTEON_SOC
>> 3074 default MIPS_CMDLINE_FROM_BOOTLOADER
>> 3075
>> 3076 config MIPS_CMDLINE_FROM_DTB
>> 3077 depends on USE_OF
>> 3078 bool "Dtb kernel arguments if available"
>> 3079
>> 3080 config MIPS_CMDLINE_DTB_EXTEND
>> 3081 depends on USE_OF
>> 3082 bool "Extend dtb kernel arguments with bootloader arguments"
>> 3083
>> 3084 config MIPS_CMDLINE_FROM_BOOTLOADER
>> 3085 bool "Bootloader kernel arguments if available"
>> 3086
>> 3087 config MIPS_CMDLINE_BUILTIN_EXTEND
>> 3088 depends on CMDLINE_BOOL
>> 3089 bool "Extend builtin kernel arguments with bootloader arguments"
>> 3090 endchoice
>> 3091
>> 3092 endmenu
1018 3093
1019 config EFI !! 3094 config LOCKDEP_SUPPORT
1020 bool "UEFI runtime support" !! 3095 bool
1021 depends on OF && !XIP_KERNEL <<
1022 depends on MMU <<
1023 default y 3096 default y
1024 select ARCH_SUPPORTS_ACPI if 64BIT <<
1025 select EFI_GENERIC_STUB <<
1026 select EFI_PARAMS_FROM_FDT <<
1027 select EFI_RUNTIME_WRAPPERS <<
1028 select EFI_STUB <<
1029 select LIBFDT <<
1030 select RISCV_ISA_C <<
1031 select UCS2_STRING <<
1032 help <<
1033 This option provides support for ru <<
1034 by UEFI firmware (such as non-volat <<
1035 clock, and platform reset). A UEFI <<
1036 allow the kernel to be booted as an <<
1037 is only useful on systems that have <<
1038 3097
1039 config DMI !! 3098 config STACKTRACE_SUPPORT
1040 bool "Enable support for SMBIOS (DMI) !! 3099 bool
1041 depends on EFI <<
1042 default y 3100 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
1045 3101
1046 This option is only useful on syste !! 3102 config PGTABLE_LEVELS
1047 However, even with this option, the !! 3103 int
1048 continue to boot on existing non-UE !! 3104 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
>> 3105 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
>> 3106 default 2
1049 3107
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 3108 config MIPS_AUTO_PFN_OFFSET
1051 def_bool $(cc-option,-mstack-protecto !! 3109 bool
1052 3110
1053 config STACKPROTECTOR_PER_TASK !! 3111 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 3112
1058 config PHYS_RAM_BASE_FIXED !! 3113 config PCI_DRIVERS_GENERIC
1059 bool "Explicitly specified physical R !! 3114 select PCI_DOMAINS_GENERIC if PCI
1060 depends on NONPORTABLE !! 3115 bool
1061 default n <<
1062 3116
1063 config PHYS_RAM_BASE !! 3117 config PCI_DRIVERS_LEGACY
1064 hex "Platform Physical RAM address" !! 3118 def_bool !PCI_DRIVERS_GENERIC
1065 depends on PHYS_RAM_BASE_FIXED !! 3119 select NO_GENERIC_PCI_IOPORT_MAP
1066 default "0x80000000" !! 3120 select PCI_DOMAINS if PCI
1067 help <<
1068 This is the physical address of RAM <<
1069 explicitly specified to run early r <<
1070 from flash to RAM. <<
1071 <<
1072 config XIP_KERNEL <<
1073 bool "Kernel Execute-In-Place from RO <<
1074 depends on MMU && SPARSEMEM && NONPOR <<
1075 # This prevents XIP from being enable <<
1076 # fail to build since XIP doesn't sup <<
1077 depends on !COMPILE_TEST <<
1078 select PHYS_RAM_BASE_FIXED <<
1079 help <<
1080 Execute-In-Place allows the kernel <<
1081 directly addressable by the CPU, su <<
1082 space since the text section of the <<
1083 to RAM. Read-write sections, such <<
1084 are still copied to RAM. The XIP k <<
1085 it has to run directly from flash, <<
1086 store it. The flash address used t <<
1087 and for storing it, is configuratio <<
1088 say Y here, you must know the prope <<
1089 store the kernel image depending on <<
1090 <<
1091 Also note that the make target beco <<
1092 "make zImage" or "make Image". The <<
1093 ROM memory will be arch/riscv/boot/ <<
1094 <<
1095 SPARSEMEM is required because the k <<
1096 flash resident are not backed by me <<
1097 a struct page on those regions will <<
1098 3121
1099 If unsure, say N. !! 3122 #
>> 3123 # ISA support is now enabled via select. Too many systems still have the one
>> 3124 # or other ISA chip on the board that users don't know about so don't expect
>> 3125 # users to choose the right thing ...
>> 3126 #
>> 3127 config ISA
>> 3128 bool
1100 3129
1101 config XIP_PHYS_ADDR !! 3130 config TC
1102 hex "XIP Kernel Physical Location" !! 3131 bool "TURBOchannel support"
1103 depends on XIP_KERNEL !! 3132 depends on MACH_DECSTATION
1104 default "0x21000000" !! 3133 help
1105 help !! 3134 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1106 This is the physical address in you !! 3135 processors. TURBOchannel programming specifications are available
1107 be linked for and stored to. This !! 3136 at:
1108 own flash usage. !! 3137 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 3138 and:
>> 3139 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 3140 Linux driver support status is documented at:
>> 3141 <http://www.linux-mips.org/wiki/DECstation>
1109 3142
1110 config RISCV_ISA_FALLBACK !! 3143 config MMU
1111 bool "Permit falling back to parsing !! 3144 bool
1112 default y 3145 default y
1113 help <<
1114 Parsing the "riscv,isa" devicetree <<
1115 replaced by a list of explicitly de <<
1116 with existing platforms, the kernel <<
1117 "riscv,isa" property if the replace <<
1118 <<
1119 Selecting N here will result in a k <<
1120 fallback, unless the commandline "r <<
1121 present. <<
1122 <<
1123 Please see the dt-binding, located <<
1124 Documentation/devicetree/bindings/r <<
1125 on the replacement properties, "ris <<
1126 "riscv,isa-extensions". <<
1127 3146
1128 config BUILTIN_DTB !! 3147 config ARCH_MMAP_RND_BITS_MIN
1129 bool "Built-in device tree" !! 3148 default 12 if 64BIT
1130 depends on OF && NONPORTABLE !! 3149 default 8
1131 help <<
1132 Build a device tree into the Linux <<
1133 This option should be selected if n <<
1134 If unsure, say N. <<
1135 3150
>> 3151 config ARCH_MMAP_RND_BITS_MAX
>> 3152 default 18 if 64BIT
>> 3153 default 15
1136 3154
1137 config BUILTIN_DTB_SOURCE !! 3155 config ARCH_MMAP_RND_COMPAT_BITS_MIN
1138 string "Built-in device tree source" !! 3156 default 8
1139 depends on BUILTIN_DTB <<
1140 help <<
1141 DTS file path (without suffix, rela <<
1142 for the DTS file that will be used <<
1143 kernel. <<
1144 3157
1145 endmenu # "Boot options" !! 3158 config ARCH_MMAP_RND_COMPAT_BITS_MAX
>> 3159 default 15
1146 3160
1147 config PORTABLE !! 3161 config I8253
1148 bool 3162 bool
1149 default !NONPORTABLE !! 3163 select CLKSRC_I8253
1150 select EFI !! 3164 select CLKEVT_I8253
1151 select MMU !! 3165 select MIPS_EXTERNAL_TIMER
1152 select OF !! 3166 endmenu
>> 3167
>> 3168 config TRAD_SIGNALS
>> 3169 bool
>> 3170
>> 3171 config MIPS32_COMPAT
>> 3172 bool
>> 3173
>> 3174 config COMPAT
>> 3175 bool
>> 3176
>> 3177 config MIPS32_O32
>> 3178 bool "Kernel support for o32 binaries"
>> 3179 depends on 64BIT
>> 3180 select ARCH_WANT_OLD_COMPAT_IPC
>> 3181 select COMPAT
>> 3182 select MIPS32_COMPAT
>> 3183 help
>> 3184 Select this option if you want to run o32 binaries. These are pure
>> 3185 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 3186 existing binaries are in this format.
>> 3187
>> 3188 If unsure, say Y.
>> 3189
>> 3190 config MIPS32_N32
>> 3191 bool "Kernel support for n32 binaries"
>> 3192 depends on 64BIT
>> 3193 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>> 3194 select COMPAT
>> 3195 select MIPS32_COMPAT
>> 3196 help
>> 3197 Select this option if you want to run n32 binaries. These are
>> 3198 64-bit binaries using 32-bit quantities for addressing and certain
>> 3199 data that would normally be 64-bit. They are used in special
>> 3200 cases.
>> 3201
>> 3202 If unsure, say N.
1153 3203
1154 config ARCH_PROC_KCORE_TEXT !! 3204 config CC_HAS_MNO_BRANCH_LIKELY
1155 def_bool y 3205 def_bool y
>> 3206 depends on $(cc-option,-mno-branch-likely)
1156 3207
1157 menu "Power management options" 3208 menu "Power management options"
1158 3209
1159 source "kernel/power/Kconfig" <<
1160 <<
1161 config ARCH_HIBERNATION_POSSIBLE 3210 config ARCH_HIBERNATION_POSSIBLE
1162 def_bool y 3211 def_bool y
1163 !! 3212 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 3213
1167 config ARCH_SUSPEND_POSSIBLE 3214 config ARCH_SUSPEND_POSSIBLE
1168 def_bool y 3215 def_bool y
>> 3216 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1169 3217
1170 endmenu # "Power management options" !! 3218 source "kernel/power/Kconfig"
1171 3219
1172 menu "CPU Power Management" !! 3220 endmenu
1173 3221
1174 source "drivers/cpuidle/Kconfig" !! 3222 config MIPS_EXTERNAL_TIMER
>> 3223 bool
>> 3224
>> 3225 menu "CPU Power Management"
1175 3226
>> 3227 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
1176 source "drivers/cpufreq/Kconfig" 3228 source "drivers/cpufreq/Kconfig"
>> 3229 endif # CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
>> 3230
>> 3231 source "drivers/cpuidle/Kconfig"
1177 3232
1178 endmenu # "CPU Power Management" !! 3233 endmenu
1179 3234
1180 source "arch/riscv/kvm/Kconfig" !! 3235 source "arch/mips/kvm/Kconfig"
1181 3236
1182 source "drivers/acpi/Kconfig" !! 3237 source "arch/mips/vdso/Kconfig"
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