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_CPU_CACHE_ALIASING
16 select ACPI_MCFG if (ACPI && PCI) !! 8 select ARCH_HAS_CPU_FINALIZE_INIT
17 select ACPI_PPTT if ACPI !! 9 select ARCH_HAS_CURRENT_STACK_POINTER if !CC_IS_CLANG || CLANG_VERSION >= 140000
18 select ACPI_REDUCED_HARDWARE_ONLY if A !! 10 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
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 11 select ARCH_HAS_FORTIFY_SOURCE
33 select ARCH_HAS_GCOV_PROFILE_ALL <<
34 select ARCH_HAS_GIGANTIC_PAGE <<
35 select ARCH_HAS_KCOV 12 select ARCH_HAS_KCOV
36 select ARCH_HAS_KERNEL_FPU_SUPPORT if !! 13 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
37 select ARCH_HAS_MEMBARRIER_CALLBACKS !! 14 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
38 select ARCH_HAS_MEMBARRIER_SYNC_CORE !! 15 select ARCH_HAS_STRNCPY_FROM_USER
39 select ARCH_HAS_MMIOWB !! 16 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 17 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
52 select ARCH_HAS_UBSAN 18 select ARCH_HAS_UBSAN
53 select ARCH_HAS_VDSO_DATA !! 19 select ARCH_HAS_GCOV_PROFILE_ALL
54 select ARCH_KEEP_MEMBLOCK if ACPI !! 20 select ARCH_KEEP_MEMBLOCK
55 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL !! 21 select ARCH_USE_BUILTIN_BSWAP
56 select ARCH_OPTIONAL_KERNEL_RWX if ARC <<
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 22 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
71 select ARCH_USE_MEMTEST 23 select ARCH_USE_MEMTEST
72 select ARCH_USE_QUEUED_RWLOCKS 24 select ARCH_USE_QUEUED_RWLOCKS
73 select ARCH_USE_SYM_ANNOTATIONS !! 25 select ARCH_USE_QUEUED_SPINLOCKS
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN !! 26 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU <<
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ 27 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
77 select ARCH_WANT_FRAME_POINTERS !! 28 select ARCH_WANT_IPC_PARSE_VERSION
78 select ARCH_WANT_GENERAL_HUGETLB if !R !! 29 select ARCH_WANT_LD_ORPHAN_WARN
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B !! 30 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 31 select CLONE_BACKWARDS
89 select COMMON_CLK !! 32 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
90 select CPU_PM if CPU_IDLE || HIBERNATI !! 33 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 34 select GENERIC_ATOMIC64 if !64BIT
96 select GENERIC_CLOCKEVENTS_BROADCAST i !! 35 select GENERIC_CMOS_UPDATE
97 select GENERIC_CPU_DEVICES !! 36 select GENERIC_CPU_AUTOPROBE
98 select GENERIC_CPU_VULNERABILITIES !! 37 select GENERIC_GETTIMEOFDAY
99 select GENERIC_EARLY_IOREMAP !! 38 select GENERIC_IOMAP
100 select GENERIC_ENTRY !! 39 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 40 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 41 select GENERIC_ISA_DMA if EISA
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED !! 42 select GENERIC_LIB_ASHLDI3
110 select GENERIC_PCI_IOMAP !! 43 select GENERIC_LIB_ASHRDI3
111 select GENERIC_PTDUMP if MMU !! 44 select GENERIC_LIB_CMPDI2
112 select GENERIC_SCHED_CLOCK !! 45 select GENERIC_LIB_LSHRDI3
>> 46 select GENERIC_LIB_UCMPDI2
>> 47 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
113 select GENERIC_SMP_IDLE_THREAD 48 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 49 select GENERIC_IDLE_POLL_SETUP
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 50 select GENERIC_TIME_VSYSCALL
116 select HARDIRQS_SW_RESEND !! 51 select GUP_GET_PXX_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
117 select HAS_IOPORT if MMU !! 52 select HAS_IOPORT if !NO_IOPORT_MAP || ISA
118 select HAVE_ARCH_AUDITSYSCALL !! 53 select HAVE_ARCH_COMPILER_H
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ !! 54 select HAVE_ARCH_JUMP_LABEL
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 !! 55 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT
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 56 select HAVE_ARCH_MMAP_RND_BITS if MMU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 57 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER 58 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK 59 select HAVE_ARCH_TRACEHOOK
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 60 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 61 select HAVE_ASM_MODVERSIONS
139 select HAVE_CONTEXT_TRACKING_USER 62 select HAVE_CONTEXT_TRACKING_USER
>> 63 select HAVE_TIF_NOHZ
>> 64 select HAVE_C_RECORDMCOUNT
140 select HAVE_DEBUG_KMEMLEAK 65 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS if MMU !! 66 select HAVE_DEBUG_STACKOVERFLOW
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER !! 67 select HAVE_DMA_CONTIGUOUS
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT !! 68 select HAVE_DYNAMIC_FTRACE
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i !! 69 select HAVE_EBPF_JIT if !CPU_MICROMIPS
145 select HAVE_FTRACE_MCOUNT_RECORD if !X !! 70 select HAVE_EXIT_THREAD
>> 71 select HAVE_GUP_FAST
>> 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 !! 85 select HAVE_PAGE_SIZE_4KB if !CPU_LOONGSON2EF && !CPU_LOONGSON64
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL !! 86 select HAVE_PAGE_SIZE_16KB if !CPU_R3000
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & !! 87 select HAVE_PAGE_SIZE_64KB if !CPU_R3000
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 88 select HAVE_PERF_EVENTS
173 select HAVE_PERF_REGS 89 select HAVE_PERF_REGS
174 select HAVE_PERF_USER_STACK_DUMP 90 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 91 select HAVE_REGS_AND_STACK_ACCESS_API
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 select HAVE_RSEQ 92 select HAVE_RSEQ
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS !! 93 select HAVE_SPARSE_SYSCALL_NR
181 select HAVE_SAMPLE_FTRACE_DIRECT <<
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
183 select HAVE_STACKPROTECTOR 94 select HAVE_STACKPROTECTOR
184 select HAVE_SYSCALL_TRACEPOINTS 95 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 96 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
186 select IRQ_DOMAIN <<
187 select IRQ_FORCED_THREADING 97 select IRQ_FORCED_THREADING
188 select KASAN_VMALLOC if KASAN !! 98 select ISA if EISA
189 select LOCK_MM_AND_FIND_VMA 99 select LOCK_MM_AND_FIND_VMA
190 select MMU_GATHER_RCU_TABLE_FREE if SM !! 100 select MODULES_USE_ELF_REL if MODULES
191 select MODULES_USE_ELF_RELA if MODULES !! 101 select MODULES_USE_ELF_RELA if MODULES && 64BIT
192 select OF !! 102 select PERF_USE_VMALLOC
193 select OF_EARLY_FLATTREE !! 103 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
194 select OF_IRQ !! 104 select RTC_LIB
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 105 select SYSCTL_EXCEPTION_TRACE
206 select THREAD_INFO_IN_TASK <<
207 select TRACE_IRQFLAGS_SUPPORT 106 select TRACE_IRQFLAGS_SUPPORT
208 select UACCESS_MEMCPY if !MMU !! 107 select ARCH_HAS_ELFCORE_COMPAT
209 select USER_STACKTRACE_SUPPORT !! 108 select HAVE_ARCH_KCSAN if 64BIT
>> 109
>> 110 config MIPS_FIXUP_BIGPHYS_ADDR
>> 111 bool
>> 112
>> 113 config MIPS_GENERIC
>> 114 bool
>> 115
>> 116 config MACH_GENERIC_CORE
>> 117 bool
>> 118
>> 119 config MACH_INGENIC
>> 120 bool
>> 121 select SYS_SUPPORTS_32BIT_KERNEL
>> 122 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 123 select SYS_SUPPORTS_ZBOOT
>> 124 select DMA_NONCOHERENT
>> 125 select IRQ_MIPS_CPU
>> 126 select PINCTRL
>> 127 select GPIOLIB
>> 128 select COMMON_CLK
>> 129 select GENERIC_IRQ_CHIP
>> 130 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
>> 131 select USE_OF
>> 132 select CPU_SUPPORTS_CPUFREQ
>> 133 select MIPS_EXTERNAL_TIMER
>> 134
>> 135 menu "Machine selection"
>> 136
>> 137 choice
>> 138 prompt "System type"
>> 139 default MIPS_GENERIC_KERNEL
>> 140
>> 141 config MIPS_GENERIC_KERNEL
>> 142 bool "Generic board-agnostic MIPS kernel"
>> 143 select MIPS_GENERIC
>> 144 select BOOT_RAW
>> 145 select BUILTIN_DTB
>> 146 select CEVT_R4K
>> 147 select CLKSRC_MIPS_GIC
>> 148 select COMMON_CLK
>> 149 select CPU_MIPSR2_IRQ_EI
>> 150 select CPU_MIPSR2_IRQ_VI
>> 151 select CSRC_R4K
>> 152 select DMA_NONCOHERENT
>> 153 select HAVE_PCI
>> 154 select IRQ_MIPS_CPU
>> 155 select MACH_GENERIC_CORE
>> 156 select MIPS_AUTO_PFN_OFFSET
>> 157 select MIPS_CPU_SCACHE
>> 158 select MIPS_GIC
>> 159 select MIPS_L1_CACHE_SHIFT_7
>> 160 select NO_EXCEPT_FILL
>> 161 select PCI_DRIVERS_GENERIC
>> 162 select SMP_UP if SMP
>> 163 select SWAP_IO_SPACE
>> 164 select SYS_HAS_CPU_MIPS32_R1
>> 165 select SYS_HAS_CPU_MIPS32_R2
>> 166 select SYS_HAS_CPU_MIPS32_R5
>> 167 select SYS_HAS_CPU_MIPS32_R6
>> 168 select SYS_HAS_CPU_MIPS64_R1
>> 169 select SYS_HAS_CPU_MIPS64_R2
>> 170 select SYS_HAS_CPU_MIPS64_R5
>> 171 select SYS_HAS_CPU_MIPS64_R6
>> 172 select SYS_SUPPORTS_32BIT_KERNEL
>> 173 select SYS_SUPPORTS_64BIT_KERNEL
>> 174 select SYS_SUPPORTS_BIG_ENDIAN
>> 175 select SYS_SUPPORTS_HIGHMEM
>> 176 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 177 select SYS_SUPPORTS_MICROMIPS
>> 178 select SYS_SUPPORTS_MIPS16
>> 179 select SYS_SUPPORTS_MIPS_CPS
>> 180 select SYS_SUPPORTS_MULTITHREADING
>> 181 select SYS_SUPPORTS_RELOCATABLE
>> 182 select SYS_SUPPORTS_SMARTMIPS
>> 183 select SYS_SUPPORTS_ZBOOT
>> 184 select UHI_BOOT
>> 185 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 186 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 187 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 188 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 189 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 190 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 191 select USE_OF
>> 192 help
>> 193 Select this to build a kernel which aims to support multiple boards,
>> 194 generally using a flattened device tree passed from the bootloader
>> 195 using the boot protocol defined in the UHI (Unified Hosting
>> 196 Interface) specification.
>> 197
>> 198 config MIPS_ALCHEMY
>> 199 bool "Alchemy processor based machines"
>> 200 select PHYS_ADDR_T_64BIT
>> 201 select CEVT_R4K
>> 202 select CSRC_R4K
>> 203 select IRQ_MIPS_CPU
>> 204 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is
>> 205 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
>> 206 select SYS_HAS_CPU_MIPS32_R1
>> 207 select SYS_SUPPORTS_32BIT_KERNEL
>> 208 select SYS_SUPPORTS_APM_EMULATION
>> 209 select GPIOLIB
>> 210 select SYS_SUPPORTS_ZBOOT
>> 211 select COMMON_CLK
>> 212
>> 213 config ATH25
>> 214 bool "Atheros AR231x/AR531x SoC support"
>> 215 select CEVT_R4K
>> 216 select CSRC_R4K
>> 217 select DMA_NONCOHERENT
>> 218 select IRQ_MIPS_CPU
>> 219 select IRQ_DOMAIN
>> 220 select SYS_HAS_CPU_MIPS32_R1
>> 221 select SYS_SUPPORTS_BIG_ENDIAN
>> 222 select SYS_SUPPORTS_32BIT_KERNEL
>> 223 select SYS_HAS_EARLY_PRINTK
>> 224 help
>> 225 Support for Atheros AR231x and Atheros AR531x based boards
>> 226
>> 227 config ATH79
>> 228 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 229 select ARCH_HAS_RESET_CONTROLLER
>> 230 select BOOT_RAW
>> 231 select CEVT_R4K
>> 232 select CSRC_R4K
>> 233 select DMA_NONCOHERENT
>> 234 select GPIOLIB
>> 235 select PINCTRL
>> 236 select COMMON_CLK
>> 237 select IRQ_MIPS_CPU
>> 238 select SYS_HAS_CPU_MIPS32_R2
>> 239 select SYS_HAS_EARLY_PRINTK
>> 240 select SYS_SUPPORTS_32BIT_KERNEL
>> 241 select SYS_SUPPORTS_BIG_ENDIAN
>> 242 select SYS_SUPPORTS_MIPS16
>> 243 select SYS_SUPPORTS_ZBOOT_UART_PROM
>> 244 select USE_OF
>> 245 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
>> 246 help
>> 247 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 248
>> 249 config BMIPS_GENERIC
>> 250 bool "Broadcom Generic BMIPS kernel"
>> 251 select ARCH_HAS_RESET_CONTROLLER
>> 252 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
>> 253 select BOOT_RAW
>> 254 select NO_EXCEPT_FILL
>> 255 select USE_OF
>> 256 select CEVT_R4K
>> 257 select CSRC_R4K
>> 258 select SYNC_R4K
>> 259 select COMMON_CLK
>> 260 select BCM6345_L1_IRQ
>> 261 select BCM7038_L1_IRQ
>> 262 select BCM7120_L2_IRQ
>> 263 select BRCMSTB_L2_IRQ
>> 264 select IRQ_MIPS_CPU
>> 265 select DMA_NONCOHERENT
>> 266 select SYS_SUPPORTS_32BIT_KERNEL
>> 267 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 268 select SYS_SUPPORTS_BIG_ENDIAN
>> 269 select SYS_SUPPORTS_HIGHMEM
>> 270 select SYS_HAS_CPU_BMIPS32_3300
>> 271 select SYS_HAS_CPU_BMIPS4350
>> 272 select SYS_HAS_CPU_BMIPS4380
>> 273 select SYS_HAS_CPU_BMIPS5000
>> 274 select SWAP_IO_SPACE
>> 275 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 276 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 277 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 278 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 279 select HARDIRQS_SW_RESEND
>> 280 select HAVE_PCI
>> 281 select PCI_DRIVERS_GENERIC
>> 282 select FW_CFE
>> 283 help
>> 284 Build a generic DT-based kernel image that boots on select
>> 285 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
>> 286 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
>> 287 must be set appropriately for your board.
>> 288
>> 289 config BCM47XX
>> 290 bool "Broadcom BCM47XX based boards"
>> 291 select BOOT_RAW
>> 292 select CEVT_R4K
>> 293 select CSRC_R4K
>> 294 select DMA_NONCOHERENT
>> 295 select HAVE_PCI
>> 296 select IRQ_MIPS_CPU
>> 297 select SYS_HAS_CPU_MIPS32_R1
>> 298 select NO_EXCEPT_FILL
>> 299 select SYS_SUPPORTS_32BIT_KERNEL
>> 300 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 301 select SYS_SUPPORTS_MIPS16
>> 302 select SYS_SUPPORTS_ZBOOT
>> 303 select SYS_HAS_EARLY_PRINTK
>> 304 select USE_GENERIC_EARLY_PRINTK_8250
>> 305 select GPIOLIB
>> 306 select LEDS_GPIO_REGISTER
>> 307 select BCM47XX_NVRAM
>> 308 select BCM47XX_SPROM
>> 309 select BCM47XX_SSB if !BCM47XX_BCMA
>> 310 help
>> 311 Support for BCM47XX based boards
>> 312
>> 313 config BCM63XX
>> 314 bool "Broadcom BCM63XX based boards"
>> 315 select BOOT_RAW
>> 316 select CEVT_R4K
>> 317 select CSRC_R4K
>> 318 select SYNC_R4K
>> 319 select DMA_NONCOHERENT
>> 320 select IRQ_MIPS_CPU
>> 321 select SYS_SUPPORTS_32BIT_KERNEL
>> 322 select SYS_SUPPORTS_BIG_ENDIAN
>> 323 select SYS_HAS_EARLY_PRINTK
>> 324 select SYS_HAS_CPU_BMIPS32_3300
>> 325 select SYS_HAS_CPU_BMIPS4350
>> 326 select SYS_HAS_CPU_BMIPS4380
>> 327 select SWAP_IO_SPACE
>> 328 select GPIOLIB
>> 329 select MIPS_L1_CACHE_SHIFT_4
>> 330 select HAVE_LEGACY_CLK
>> 331 help
>> 332 Support for BCM63XX based boards
>> 333
>> 334 config MIPS_COBALT
>> 335 bool "Cobalt Server"
>> 336 select CEVT_R4K
>> 337 select CSRC_R4K
>> 338 select CEVT_GT641XX
>> 339 select DMA_NONCOHERENT
>> 340 select FORCE_PCI
>> 341 select I8253
>> 342 select I8259
>> 343 select IRQ_MIPS_CPU
>> 344 select IRQ_GT641XX
>> 345 select PCI_GT64XXX_PCI0
>> 346 select SYS_HAS_CPU_NEVADA
>> 347 select SYS_HAS_EARLY_PRINTK
>> 348 select SYS_SUPPORTS_32BIT_KERNEL
>> 349 select SYS_SUPPORTS_64BIT_KERNEL
>> 350 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 351 select USE_GENERIC_EARLY_PRINTK_8250
>> 352
>> 353 config MACH_DECSTATION
>> 354 bool "DECstations"
>> 355 select BOOT_ELF32
>> 356 select CEVT_DS1287
>> 357 select CEVT_R4K if CPU_R4X00
>> 358 select CSRC_IOASIC
>> 359 select CSRC_R4K if CPU_R4X00
>> 360 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 361 select CPU_R4000_WORKAROUNDS if 64BIT
>> 362 select CPU_R4400_WORKAROUNDS if 64BIT
>> 363 select DMA_NONCOHERENT
>> 364 select NO_IOPORT_MAP
>> 365 select IRQ_MIPS_CPU
>> 366 select SYS_HAS_CPU_R3000
>> 367 select SYS_HAS_CPU_R4X00
>> 368 select SYS_SUPPORTS_32BIT_KERNEL
>> 369 select SYS_SUPPORTS_64BIT_KERNEL
>> 370 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 371 select SYS_SUPPORTS_128HZ
>> 372 select SYS_SUPPORTS_256HZ
>> 373 select SYS_SUPPORTS_1024HZ
>> 374 select MIPS_L1_CACHE_SHIFT_4
>> 375 help
>> 376 This enables support for DEC's MIPS based workstations. For details
>> 377 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 378 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 379
>> 380 If you have one of the following DECstation Models you definitely
>> 381 want to choose R4xx0 for the CPU Type:
>> 382
>> 383 DECstation 5000/50
>> 384 DECstation 5000/150
>> 385 DECstation 5000/260
>> 386 DECsystem 5900/260
>> 387
>> 388 otherwise choose R3000.
>> 389
>> 390 config MACH_JAZZ
>> 391 bool "Jazz family of machines"
>> 392 select ARC_MEMORY
>> 393 select ARC_PROMLIB
>> 394 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 395 select ARCH_MIGHT_HAVE_PC_SERIO
>> 396 select DMA_OPS
>> 397 select FW_ARC
>> 398 select FW_ARC32
>> 399 select ARCH_MAY_HAVE_PC_FDC
>> 400 select CEVT_R4K
>> 401 select CSRC_R4K
>> 402 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 403 select GENERIC_ISA_DMA
>> 404 select HAVE_PCSPKR_PLATFORM
>> 405 select IRQ_MIPS_CPU
>> 406 select I8253
>> 407 select I8259
>> 408 select ISA
>> 409 select SYS_HAS_CPU_R4X00
>> 410 select SYS_SUPPORTS_32BIT_KERNEL
>> 411 select SYS_SUPPORTS_64BIT_KERNEL
>> 412 select SYS_SUPPORTS_100HZ
>> 413 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 414 help
>> 415 This a family of machines based on the MIPS R4030 chipset which was
>> 416 used by several vendors to build RISC/os and Windows NT workstations.
>> 417 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 418 Olivetti M700-10 workstations.
>> 419
>> 420 config MACH_INGENIC_SOC
>> 421 bool "Ingenic SoC based machines"
>> 422 select MIPS_GENERIC
>> 423 select MACH_INGENIC
>> 424 select MACH_GENERIC_CORE
>> 425 select SYS_SUPPORTS_ZBOOT_UART16550
>> 426 select CPU_SUPPORTS_CPUFREQ
>> 427 select MIPS_EXTERNAL_TIMER
>> 428
>> 429 config LANTIQ
>> 430 bool "Lantiq based platforms"
>> 431 select DMA_NONCOHERENT
>> 432 select IRQ_MIPS_CPU
>> 433 select CEVT_R4K
>> 434 select CSRC_R4K
>> 435 select NO_EXCEPT_FILL
>> 436 select SYS_HAS_CPU_MIPS32_R1
>> 437 select SYS_HAS_CPU_MIPS32_R2
>> 438 select SYS_SUPPORTS_BIG_ENDIAN
>> 439 select SYS_SUPPORTS_32BIT_KERNEL
>> 440 select SYS_SUPPORTS_MIPS16
>> 441 select SYS_SUPPORTS_MULTITHREADING
>> 442 select SYS_SUPPORTS_VPE_LOADER
>> 443 select SYS_HAS_EARLY_PRINTK
>> 444 select GPIOLIB
>> 445 select SWAP_IO_SPACE
>> 446 select BOOT_RAW
>> 447 select HAVE_LEGACY_CLK
>> 448 select USE_OF
>> 449 select PINCTRL
>> 450 select PINCTRL_LANTIQ
>> 451 select ARCH_HAS_RESET_CONTROLLER
>> 452 select RESET_CONTROLLER
>> 453
>> 454 config MACH_LOONGSON32
>> 455 bool "Loongson 32-bit family of machines"
>> 456 select SYS_SUPPORTS_ZBOOT
>> 457 help
>> 458 This enables support for the Loongson-1 family of machines.
>> 459
>> 460 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 461 the Institute of Computing Technology (ICT), Chinese Academy of
>> 462 Sciences (CAS).
>> 463
>> 464 config MACH_LOONGSON2EF
>> 465 bool "Loongson-2E/F family of machines"
>> 466 select SYS_SUPPORTS_ZBOOT
>> 467 help
>> 468 This enables the support of early Loongson-2E/F family of machines.
>> 469
>> 470 config MACH_LOONGSON64
>> 471 bool "Loongson 64-bit family of machines"
>> 472 select ARCH_DMA_DEFAULT_COHERENT
>> 473 select ARCH_SPARSEMEM_ENABLE
>> 474 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 475 select ARCH_MIGHT_HAVE_PC_SERIO
>> 476 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 477 select BOOT_ELF32
>> 478 select BOARD_SCACHE
>> 479 select CSRC_R4K
>> 480 select CEVT_R4K
>> 481 select FORCE_PCI
>> 482 select ISA
>> 483 select I8259
>> 484 select IRQ_MIPS_CPU
>> 485 select NO_EXCEPT_FILL
>> 486 select NR_CPUS_DEFAULT_64
>> 487 select USE_GENERIC_EARLY_PRINTK_8250
>> 488 select PCI_DRIVERS_GENERIC
>> 489 select SYS_HAS_CPU_LOONGSON64
>> 490 select SYS_HAS_EARLY_PRINTK
>> 491 select SYS_SUPPORTS_SMP
>> 492 select SYS_SUPPORTS_HOTPLUG_CPU
>> 493 select SYS_SUPPORTS_NUMA
>> 494 select SYS_SUPPORTS_64BIT_KERNEL
>> 495 select SYS_SUPPORTS_HIGHMEM
>> 496 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 497 select SYS_SUPPORTS_ZBOOT
>> 498 select SYS_SUPPORTS_RELOCATABLE
>> 499 select ZONE_DMA32
>> 500 select COMMON_CLK
>> 501 select USE_OF
>> 502 select BUILTIN_DTB
>> 503 select PCI_HOST_GENERIC
>> 504 select HAVE_ARCH_NODEDATA_EXTENSION if NUMA
>> 505 help
>> 506 This enables the support of Loongson-2/3 family of machines.
>> 507
>> 508 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
>> 509 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
>> 510 and Loongson-2F which will be removed), developed by the Institute
>> 511 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
>> 512
>> 513 config MIPS_MALTA
>> 514 bool "MIPS Malta board"
>> 515 select ARCH_MAY_HAVE_PC_FDC
>> 516 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 517 select ARCH_MIGHT_HAVE_PC_SERIO
>> 518 select BOOT_ELF32
>> 519 select BOOT_RAW
>> 520 select BUILTIN_DTB
>> 521 select CEVT_R4K
>> 522 select CLKSRC_MIPS_GIC
>> 523 select COMMON_CLK
>> 524 select CSRC_R4K
>> 525 select DMA_NONCOHERENT
>> 526 select GENERIC_ISA_DMA
>> 527 select HAVE_PCSPKR_PLATFORM
>> 528 select HAVE_PCI
>> 529 select I8253
>> 530 select I8259
>> 531 select IRQ_MIPS_CPU
>> 532 select MIPS_BONITO64
>> 533 select MIPS_CPU_SCACHE
>> 534 select MIPS_GIC
>> 535 select MIPS_L1_CACHE_SHIFT_6
>> 536 select MIPS_MSC
>> 537 select PCI_GT64XXX_PCI0
>> 538 select SMP_UP if SMP
>> 539 select SWAP_IO_SPACE
>> 540 select SYS_HAS_CPU_MIPS32_R1
>> 541 select SYS_HAS_CPU_MIPS32_R2
>> 542 select SYS_HAS_CPU_MIPS32_R3_5
>> 543 select SYS_HAS_CPU_MIPS32_R5
>> 544 select SYS_HAS_CPU_MIPS32_R6
>> 545 select SYS_HAS_CPU_MIPS64_R1
>> 546 select SYS_HAS_CPU_MIPS64_R2
>> 547 select SYS_HAS_CPU_MIPS64_R6
>> 548 select SYS_HAS_CPU_NEVADA
>> 549 select SYS_HAS_CPU_RM7000
>> 550 select SYS_SUPPORTS_32BIT_KERNEL
>> 551 select SYS_SUPPORTS_64BIT_KERNEL
>> 552 select SYS_SUPPORTS_BIG_ENDIAN
>> 553 select SYS_SUPPORTS_HIGHMEM
>> 554 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 555 select SYS_SUPPORTS_MICROMIPS
>> 556 select SYS_SUPPORTS_MIPS16
>> 557 select SYS_SUPPORTS_MIPS_CPS
>> 558 select SYS_SUPPORTS_MULTITHREADING
>> 559 select SYS_SUPPORTS_RELOCATABLE
>> 560 select SYS_SUPPORTS_SMARTMIPS
>> 561 select SYS_SUPPORTS_VPE_LOADER
>> 562 select SYS_SUPPORTS_ZBOOT
>> 563 select USE_OF
>> 564 select WAR_ICACHE_REFILLS
210 select ZONE_DMA32 if 64BIT 565 select ZONE_DMA32 if 64BIT
>> 566 help
>> 567 This enables support for the MIPS Technologies Malta evaluation
>> 568 board.
211 569
212 config RUSTC_SUPPORTS_RISCV !! 570 config MACH_PIC32
213 def_bool y !! 571 bool "Microchip PIC32 Family"
214 depends on 64BIT !! 572 help
215 # Shadow call stack requires rustc ver !! 573 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) <<
232 574
233 config RISCV_USE_LINKER_RELAXATION !! 575 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
234 def_bool y !! 576 microcontrollers.
235 # https://github.com/llvm/llvm-project !! 577
236 depends on !LD_IS_LLD || LLD_VERSION > !! 578 config MACH_EYEQ5
>> 579 bool "Mobileye EyeQ5 SoC"
>> 580 select MACH_GENERIC_CORE
>> 581 select ARM_AMBA
>> 582 select PHYSICAL_START_BOOL
>> 583 select ARCH_SPARSEMEM_DEFAULT if 64BIT
>> 584 select BOOT_RAW
>> 585 select BUILTIN_DTB
>> 586 select CEVT_R4K
>> 587 select CLKSRC_MIPS_GIC
>> 588 select COMMON_CLK
>> 589 select CPU_MIPSR2_IRQ_EI
>> 590 select CPU_MIPSR2_IRQ_VI
>> 591 select CSRC_R4K
>> 592 select DMA_NONCOHERENT
>> 593 select HAVE_PCI
>> 594 select IRQ_MIPS_CPU
>> 595 select MIPS_AUTO_PFN_OFFSET
>> 596 select MIPS_CPU_SCACHE
>> 597 select MIPS_GIC
>> 598 select MIPS_L1_CACHE_SHIFT_7
>> 599 select PCI_DRIVERS_GENERIC
>> 600 select SMP_UP if SMP
>> 601 select SWAP_IO_SPACE
>> 602 select SYS_HAS_CPU_MIPS64_R6
>> 603 select SYS_SUPPORTS_64BIT_KERNEL
>> 604 select SYS_SUPPORTS_HIGHMEM
>> 605 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 606 select SYS_SUPPORTS_MIPS_CPS
>> 607 select SYS_SUPPORTS_RELOCATABLE
>> 608 select SYS_SUPPORTS_ZBOOT
>> 609 select UHI_BOOT
>> 610 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 611 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 612 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 613 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 614 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 615 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 616 select USE_OF
>> 617 help
>> 618 Select this to build a kernel supporting EyeQ5 SoC from Mobileye.
237 619
238 # https://github.com/llvm/llvm-project/commit/ !! 620 bool
239 config ARCH_HAS_BROKEN_DWARF5 <<
240 def_bool y <<
241 depends on RISCV_USE_LINKER_RELAXATION <<
242 # https://github.com/llvm/llvm-project <<
243 depends on AS_IS_LLVM && AS_VERSION < <<
244 # https://github.com/llvm/llvm-project <<
245 depends on LD_IS_LLD && LLD_VERSION < <<
246 621
247 config ARCH_MMAP_RND_BITS_MIN !! 622 config MACH_NINTENDO64
248 default 18 if 64BIT !! 623 bool "Nintendo 64 console"
249 default 8 !! 624 select CEVT_R4K
>> 625 select CSRC_R4K
>> 626 select SYS_HAS_CPU_R4300
>> 627 select SYS_SUPPORTS_BIG_ENDIAN
>> 628 select SYS_SUPPORTS_ZBOOT
>> 629 select SYS_SUPPORTS_32BIT_KERNEL
>> 630 select SYS_SUPPORTS_64BIT_KERNEL
>> 631 select DMA_NONCOHERENT
>> 632 select IRQ_MIPS_CPU
>> 633
>> 634 config RALINK
>> 635 bool "Ralink based machines"
>> 636 select CEVT_R4K
>> 637 select COMMON_CLK
>> 638 select CSRC_R4K
>> 639 select BOOT_RAW
>> 640 select DMA_NONCOHERENT
>> 641 select IRQ_MIPS_CPU
>> 642 select USE_OF
>> 643 select SYS_HAS_CPU_MIPS32_R2
>> 644 select SYS_SUPPORTS_32BIT_KERNEL
>> 645 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 646 select SYS_SUPPORTS_MIPS16
>> 647 select SYS_SUPPORTS_ZBOOT
>> 648 select SYS_HAS_EARLY_PRINTK
>> 649 select ARCH_HAS_RESET_CONTROLLER
>> 650 select RESET_CONTROLLER
>> 651
>> 652 config MACH_REALTEK_RTL
>> 653 bool "Realtek RTL838x/RTL839x based machines"
>> 654 select MIPS_GENERIC
>> 655 select MACH_GENERIC_CORE
>> 656 select DMA_NONCOHERENT
>> 657 select IRQ_MIPS_CPU
>> 658 select CSRC_R4K
>> 659 select CEVT_R4K
>> 660 select SYS_HAS_CPU_MIPS32_R1
>> 661 select SYS_HAS_CPU_MIPS32_R2
>> 662 select SYS_SUPPORTS_BIG_ENDIAN
>> 663 select SYS_SUPPORTS_32BIT_KERNEL
>> 664 select SYS_SUPPORTS_MIPS16
>> 665 select SYS_SUPPORTS_MULTITHREADING
>> 666 select SYS_SUPPORTS_VPE_LOADER
>> 667 select BOOT_RAW
>> 668 select PINCTRL
>> 669 select USE_OF
>> 670
>> 671 config SGI_IP22
>> 672 bool "SGI IP22 (Indy/Indigo2)"
>> 673 select ARC_MEMORY
>> 674 select ARC_PROMLIB
>> 675 select FW_ARC
>> 676 select FW_ARC32
>> 677 select ARCH_MIGHT_HAVE_PC_SERIO
>> 678 select BOOT_ELF32
>> 679 select CEVT_R4K
>> 680 select CSRC_R4K
>> 681 select DEFAULT_SGI_PARTITION
>> 682 select DMA_NONCOHERENT
>> 683 select HAVE_EISA
>> 684 select I8253
>> 685 select I8259
>> 686 select IP22_CPU_SCACHE
>> 687 select IRQ_MIPS_CPU
>> 688 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 689 select SGI_HAS_I8042
>> 690 select SGI_HAS_INDYDOG
>> 691 select SGI_HAS_HAL2
>> 692 select SGI_HAS_SEEQ
>> 693 select SGI_HAS_WD93
>> 694 select SGI_HAS_ZILOG
>> 695 select SWAP_IO_SPACE
>> 696 select SYS_HAS_CPU_R4X00
>> 697 select SYS_HAS_CPU_R5000
>> 698 select SYS_HAS_EARLY_PRINTK
>> 699 select SYS_SUPPORTS_32BIT_KERNEL
>> 700 select SYS_SUPPORTS_64BIT_KERNEL
>> 701 select SYS_SUPPORTS_BIG_ENDIAN
>> 702 select WAR_R4600_V1_INDEX_ICACHEOP
>> 703 select WAR_R4600_V1_HIT_CACHEOP
>> 704 select WAR_R4600_V2_HIT_CACHEOP
>> 705 select MIPS_L1_CACHE_SHIFT_7
>> 706 help
>> 707 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 708 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 709 that runs on these, say Y here.
>> 710
>> 711 config SGI_IP27
>> 712 bool "SGI IP27 (Origin200/2000)"
>> 713 select ARCH_HAS_PHYS_TO_DMA
>> 714 select ARCH_SPARSEMEM_ENABLE
>> 715 select FW_ARC
>> 716 select FW_ARC64
>> 717 select ARC_CMDLINE_ONLY
>> 718 select BOOT_ELF64
>> 719 select DEFAULT_SGI_PARTITION
>> 720 select FORCE_PCI
>> 721 select SYS_HAS_EARLY_PRINTK
>> 722 select HAVE_PCI
>> 723 select IRQ_MIPS_CPU
>> 724 select IRQ_DOMAIN_HIERARCHY
>> 725 select NR_CPUS_DEFAULT_64
>> 726 select PCI_DRIVERS_GENERIC
>> 727 select PCI_XTALK_BRIDGE
>> 728 select SYS_HAS_CPU_R10000
>> 729 select SYS_SUPPORTS_64BIT_KERNEL
>> 730 select SYS_SUPPORTS_BIG_ENDIAN
>> 731 select SYS_SUPPORTS_NUMA
>> 732 select SYS_SUPPORTS_SMP
>> 733 select WAR_R10000_LLSC
>> 734 select MIPS_L1_CACHE_SHIFT_7
>> 735 select NUMA
>> 736 select HAVE_ARCH_NODEDATA_EXTENSION
>> 737 help
>> 738 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 739 workstations. To compile a Linux kernel that runs on these, say Y
>> 740 here.
250 741
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 742 config SGI_IP28
252 default 8 !! 743 bool "SGI IP28 (Indigo2 R10k)"
>> 744 select ARC_MEMORY
>> 745 select ARC_PROMLIB
>> 746 select FW_ARC
>> 747 select FW_ARC64
>> 748 select ARCH_MIGHT_HAVE_PC_SERIO
>> 749 select BOOT_ELF64
>> 750 select CEVT_R4K
>> 751 select CSRC_R4K
>> 752 select DEFAULT_SGI_PARTITION
>> 753 select DMA_NONCOHERENT
>> 754 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 755 select IRQ_MIPS_CPU
>> 756 select HAVE_EISA
>> 757 select I8253
>> 758 select I8259
>> 759 select SGI_HAS_I8042
>> 760 select SGI_HAS_INDYDOG
>> 761 select SGI_HAS_HAL2
>> 762 select SGI_HAS_SEEQ
>> 763 select SGI_HAS_WD93
>> 764 select SGI_HAS_ZILOG
>> 765 select SWAP_IO_SPACE
>> 766 select SYS_HAS_CPU_R10000
>> 767 select SYS_HAS_EARLY_PRINTK
>> 768 select SYS_SUPPORTS_64BIT_KERNEL
>> 769 select SYS_SUPPORTS_BIG_ENDIAN
>> 770 select WAR_R10000_LLSC
>> 771 select MIPS_L1_CACHE_SHIFT_7
>> 772 help
>> 773 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 774 kernel that runs on these, say Y here.
>> 775
>> 776 config SGI_IP30
>> 777 bool "SGI IP30 (Octane/Octane2)"
>> 778 select ARCH_HAS_PHYS_TO_DMA
>> 779 select FW_ARC
>> 780 select FW_ARC64
>> 781 select BOOT_ELF64
>> 782 select CEVT_R4K
>> 783 select CSRC_R4K
>> 784 select FORCE_PCI
>> 785 select SYNC_R4K if SMP
>> 786 select ZONE_DMA32
>> 787 select HAVE_PCI
>> 788 select IRQ_MIPS_CPU
>> 789 select IRQ_DOMAIN_HIERARCHY
>> 790 select PCI_DRIVERS_GENERIC
>> 791 select PCI_XTALK_BRIDGE
>> 792 select SYS_HAS_EARLY_PRINTK
>> 793 select SYS_HAS_CPU_R10000
>> 794 select SYS_SUPPORTS_64BIT_KERNEL
>> 795 select SYS_SUPPORTS_BIG_ENDIAN
>> 796 select SYS_SUPPORTS_SMP
>> 797 select WAR_R10000_LLSC
>> 798 select MIPS_L1_CACHE_SHIFT_7
>> 799 select ARC_MEMORY
>> 800 help
>> 801 These are the SGI Octane and Octane2 graphics workstations. To
>> 802 compile a Linux kernel that runs on these, say Y here.
>> 803
>> 804 config SGI_IP32
>> 805 bool "SGI IP32 (O2)"
>> 806 select ARC_MEMORY
>> 807 select ARC_PROMLIB
>> 808 select ARCH_HAS_PHYS_TO_DMA
>> 809 select FW_ARC
>> 810 select FW_ARC32
>> 811 select BOOT_ELF32
>> 812 select CEVT_R4K
>> 813 select CSRC_R4K
>> 814 select DMA_NONCOHERENT
>> 815 select HAVE_PCI
>> 816 select IRQ_MIPS_CPU
>> 817 select R5000_CPU_SCACHE
>> 818 select RM7000_CPU_SCACHE
>> 819 select SYS_HAS_CPU_R5000
>> 820 select SYS_HAS_CPU_R10000 if BROKEN
>> 821 select SYS_HAS_CPU_RM7000
>> 822 select SYS_HAS_CPU_NEVADA
>> 823 select SYS_SUPPORTS_64BIT_KERNEL
>> 824 select SYS_SUPPORTS_BIG_ENDIAN
>> 825 select WAR_ICACHE_REFILLS
>> 826 help
>> 827 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 828
>> 829 config SIBYTE_CRHONE
>> 830 bool "Sibyte BCM91125C-CRhone"
>> 831 select BOOT_ELF32
>> 832 select SIBYTE_BCM1125
>> 833 select SWAP_IO_SPACE
>> 834 select SYS_HAS_CPU_SB1
>> 835 select SYS_SUPPORTS_BIG_ENDIAN
>> 836 select SYS_SUPPORTS_HIGHMEM
>> 837 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 838
>> 839 config SIBYTE_RHONE
>> 840 bool "Sibyte BCM91125E-Rhone"
>> 841 select BOOT_ELF32
>> 842 select SIBYTE_SB1250
>> 843 select SWAP_IO_SPACE
>> 844 select SYS_HAS_CPU_SB1
>> 845 select SYS_SUPPORTS_BIG_ENDIAN
>> 846 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 847
>> 848 config SIBYTE_SWARM
>> 849 bool "Sibyte BCM91250A-SWARM"
>> 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
>> 859 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
253 860
254 # max bits determined by the following formula !! 861 config SIBYTE_LITTLESUR
255 # VA_BITS - PAGE_SHIFT - 3 !! 862 bool "Sibyte BCM91250C2-LittleSur"
256 config ARCH_MMAP_RND_BITS_MAX !! 863 select BOOT_ELF32
257 default 24 if 64BIT # SV39 based !! 864 select HAVE_PATA_PLATFORM
258 default 17 !! 865 select SIBYTE_SB1250
>> 866 select SWAP_IO_SPACE
>> 867 select SYS_HAS_CPU_SB1
>> 868 select SYS_SUPPORTS_BIG_ENDIAN
>> 869 select SYS_SUPPORTS_HIGHMEM
>> 870 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 871 select ZONE_DMA32 if 64BIT
259 872
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 873 config SIBYTE_SENTOSA
261 default 17 !! 874 bool "Sibyte BCM91250E-Sentosa"
>> 875 select BOOT_ELF32
>> 876 select SIBYTE_SB1250
>> 877 select SWAP_IO_SPACE
>> 878 select SYS_HAS_CPU_SB1
>> 879 select SYS_SUPPORTS_BIG_ENDIAN
>> 880 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 881 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
>> 882
>> 883 config SIBYTE_BIGSUR
>> 884 bool "Sibyte BCM91480B-BigSur"
>> 885 select BOOT_ELF32
>> 886 select NR_CPUS_DEFAULT_4
>> 887 select SIBYTE_BCM1x80
>> 888 select SWAP_IO_SPACE
>> 889 select SYS_HAS_CPU_SB1
>> 890 select SYS_SUPPORTS_BIG_ENDIAN
>> 891 select SYS_SUPPORTS_HIGHMEM
>> 892 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 893 select ZONE_DMA32 if 64BIT
>> 894 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
262 895
263 # set if we run in machine mode, cleared if we !! 896 config SNI_RM
264 config RISCV_M_MODE !! 897 bool "SNI RM200/300/400"
265 bool "Build a kernel that runs in mach !! 898 select ARC_MEMORY
266 depends on !MMU !! 899 select ARC_PROMLIB
267 default y !! 900 select FW_ARC if CPU_LITTLE_ENDIAN
>> 901 select FW_ARC32 if CPU_LITTLE_ENDIAN
>> 902 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 903 select ARCH_MAY_HAVE_PC_FDC
>> 904 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 905 select ARCH_MIGHT_HAVE_PC_SERIO
>> 906 select BOOT_ELF32
>> 907 select CEVT_R4K
>> 908 select CSRC_R4K
>> 909 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 910 select DMA_NONCOHERENT
>> 911 select GENERIC_ISA_DMA
>> 912 select HAVE_EISA
>> 913 select HAVE_PCSPKR_PLATFORM
>> 914 select HAVE_PCI
>> 915 select IRQ_MIPS_CPU
>> 916 select I8253
>> 917 select I8259
>> 918 select ISA
>> 919 select MIPS_L1_CACHE_SHIFT_6
>> 920 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 921 select SYS_HAS_CPU_R4X00
>> 922 select SYS_HAS_CPU_R5000
>> 923 select SYS_HAS_CPU_R10000
>> 924 select R5000_CPU_SCACHE
>> 925 select SYS_HAS_EARLY_PRINTK
>> 926 select SYS_SUPPORTS_32BIT_KERNEL
>> 927 select SYS_SUPPORTS_64BIT_KERNEL
>> 928 select SYS_SUPPORTS_BIG_ENDIAN
>> 929 select SYS_SUPPORTS_HIGHMEM
>> 930 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 931 select WAR_R4600_V2_HIT_CACHEOP
>> 932 help
>> 933 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 934 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 935 Technology and now in turn merged with Fujitsu. Say Y here to
>> 936 support this machine type.
>> 937
>> 938 config MACH_TX49XX
>> 939 bool "Toshiba TX49 series based machines"
>> 940 select WAR_TX49XX_ICACHE_INDEX_INV
>> 941
>> 942 config MIKROTIK_RB532
>> 943 bool "Mikrotik RB532 boards"
>> 944 select CEVT_R4K
>> 945 select CSRC_R4K
>> 946 select DMA_NONCOHERENT
>> 947 select HAVE_PCI
>> 948 select IRQ_MIPS_CPU
>> 949 select SYS_HAS_CPU_MIPS32_R1
>> 950 select SYS_SUPPORTS_32BIT_KERNEL
>> 951 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 952 select SWAP_IO_SPACE
>> 953 select BOOT_RAW
>> 954 select GPIOLIB
>> 955 select MIPS_L1_CACHE_SHIFT_4
>> 956 help
>> 957 Support the Mikrotik(tm) RouterBoard 532 series,
>> 958 based on the IDT RC32434 SoC.
>> 959
>> 960 config CAVIUM_OCTEON_SOC
>> 961 bool "Cavium Networks Octeon SoC based boards"
>> 962 select CEVT_R4K
>> 963 select ARCH_HAS_PHYS_TO_DMA
>> 964 select HAVE_RAPIDIO
>> 965 select PHYS_ADDR_T_64BIT
>> 966 select SYS_SUPPORTS_64BIT_KERNEL
>> 967 select SYS_SUPPORTS_BIG_ENDIAN
>> 968 select EDAC_SUPPORT
>> 969 select EDAC_ATOMIC_SCRUB
>> 970 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 971 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
>> 972 select SYS_HAS_EARLY_PRINTK
>> 973 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 974 select HAVE_PCI
>> 975 select HAVE_PLAT_DELAY
>> 976 select HAVE_PLAT_FW_INIT_CMDLINE
>> 977 select HAVE_PLAT_MEMCPY
>> 978 select ZONE_DMA32
>> 979 select GPIOLIB
>> 980 select USE_OF
>> 981 select ARCH_SPARSEMEM_ENABLE
>> 982 select SYS_SUPPORTS_SMP
>> 983 select NR_CPUS_DEFAULT_64
>> 984 select MIPS_NR_CPU_NR_MAP_1024
>> 985 select BUILTIN_DTB
>> 986 select MTD
>> 987 select MTD_COMPLEX_MAPPINGS
>> 988 select SWIOTLB
>> 989 select SYS_SUPPORTS_RELOCATABLE
>> 990 help
>> 991 This option supports all of the Octeon reference boards from Cavium
>> 992 Networks. It builds a kernel that dynamically determines the Octeon
>> 993 CPU type and supports all known board reference implementations.
>> 994 Some of the supported boards are:
>> 995 EBT3000
>> 996 EBH3000
>> 997 EBH3100
>> 998 Thunder
>> 999 Kodama
>> 1000 Hikari
>> 1001 Say Y here for most Octeon reference boards.
>> 1002
>> 1003 endchoice
>> 1004
>> 1005 config FIT_IMAGE_FDT_EPM5
>> 1006 bool "Include FDT for Mobileye EyeQ5 development platforms"
>> 1007 depends on MACH_EYEQ5
>> 1008 default n
268 help 1009 help
269 Select this option if you want to ru !! 1010 Enable this to include the FDT for the EyeQ5 development platforms
270 without the assistance of any other !! 1011 from Mobileye in the FIT kernel image.
>> 1012 This requires u-boot on the platform.
>> 1013
>> 1014 source "arch/mips/alchemy/Kconfig"
>> 1015 source "arch/mips/ath25/Kconfig"
>> 1016 source "arch/mips/ath79/Kconfig"
>> 1017 source "arch/mips/bcm47xx/Kconfig"
>> 1018 source "arch/mips/bcm63xx/Kconfig"
>> 1019 source "arch/mips/bmips/Kconfig"
>> 1020 source "arch/mips/generic/Kconfig"
>> 1021 source "arch/mips/ingenic/Kconfig"
>> 1022 source "arch/mips/jazz/Kconfig"
>> 1023 source "arch/mips/lantiq/Kconfig"
>> 1024 source "arch/mips/pic32/Kconfig"
>> 1025 source "arch/mips/ralink/Kconfig"
>> 1026 source "arch/mips/sgi-ip27/Kconfig"
>> 1027 source "arch/mips/sibyte/Kconfig"
>> 1028 source "arch/mips/txx9/Kconfig"
>> 1029 source "arch/mips/cavium-octeon/Kconfig"
>> 1030 source "arch/mips/loongson2ef/Kconfig"
>> 1031 source "arch/mips/loongson32/Kconfig"
>> 1032 source "arch/mips/loongson64/Kconfig"
271 1033
272 # set if we are running in S-mode and can use !! 1034 endmenu
273 config RISCV_SBI !! 1035
>> 1036 config GENERIC_HWEIGHT
274 bool 1037 bool
275 depends on !RISCV_M_MODE <<
276 default y 1038 default y
277 1039
278 config MMU !! 1040 config GENERIC_CALIBRATE_DELAY
279 bool "MMU-based Paged Memory Managemen !! 1041 bool
280 default y 1042 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 1043
285 config PAGE_OFFSET !! 1044 config SCHED_OMIT_FRAME_POINTER
286 hex !! 1045 bool
287 default 0x80000000 if !MMU && RISCV_M_ !! 1046 default y
288 default 0x80200000 if !MMU <<
289 default 0xc0000000 if 32BIT <<
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 1047
298 config ARCH_FLATMEM_ENABLE !! 1048 #
299 def_bool !NUMA !! 1049 # Select some configuration options automatically based on user selections.
>> 1050 #
>> 1051 config FW_ARC
>> 1052 bool
300 1053
301 config ARCH_SPARSEMEM_ENABLE !! 1054 config ARCH_MAY_HAVE_PC_FDC
302 def_bool y !! 1055 bool
303 depends on MMU <<
304 select SPARSEMEM_STATIC if 32BIT && SP <<
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B <<
306 1056
307 config ARCH_SELECT_MEMORY_MODEL !! 1057 config BOOT_RAW
308 def_bool ARCH_SPARSEMEM_ENABLE !! 1058 bool
309 1059
310 config ARCH_SUPPORTS_UPROBES !! 1060 config CEVT_BCM1480
311 def_bool y !! 1061 bool
312 1062
313 config STACKTRACE_SUPPORT !! 1063 config CEVT_DS1287
314 def_bool y !! 1064 bool
315 1065
316 config GENERIC_BUG !! 1066 config CEVT_GT641XX
317 def_bool y !! 1067 bool
318 depends on BUG <<
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 1068
321 config GENERIC_BUG_RELATIVE_POINTERS !! 1069 config CEVT_R4K
322 bool 1070 bool
323 1071
324 config GENERIC_CALIBRATE_DELAY !! 1072 config CEVT_SB1250
325 def_bool y !! 1073 bool
326 1074
327 config GENERIC_CSUM !! 1075 config CEVT_TXX9
328 def_bool y !! 1076 bool
329 1077
330 config GENERIC_HWEIGHT !! 1078 config CSRC_BCM1480
331 def_bool y !! 1079 bool
332 1080
333 config FIX_EARLYCON_MEM !! 1081 config CSRC_IOASIC
334 def_bool MMU !! 1082 bool
335 1083
336 config ILLEGAL_POINTER_VALUE !! 1084 config CSRC_R4K
337 hex !! 1085 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
338 default 0 if 32BIT !! 1086 bool
339 default 0xdead000000000000 if 64BIT <<
340 1087
341 config PGTABLE_LEVELS !! 1088 config CSRC_SB1250
342 int !! 1089 bool
343 default 5 if 64BIT <<
344 default 2 <<
345 1090
346 config LOCKDEP_SUPPORT !! 1091 config MIPS_CLOCK_VSYSCALL
>> 1092 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
>> 1093
>> 1094 config GPIO_TXX9
>> 1095 select GPIOLIB
>> 1096 bool
>> 1097
>> 1098 config FW_CFE
>> 1099 bool
>> 1100
>> 1101 config ARCH_SUPPORTS_UPROBES
347 def_bool y 1102 def_bool y
348 1103
349 config RISCV_DMA_NONCOHERENT !! 1104 config DMA_NONCOHERENT
350 bool 1105 bool
351 select ARCH_HAS_DMA_PREP_COHERENT !! 1106 #
>> 1107 # MIPS allows mixing "slightly different" Cacheability and Coherency
>> 1108 # Attribute bits. It is believed that the uncached access through
>> 1109 # KSEG1 and the implementation specific "uncached accelerated" used
>> 1110 # by pgprot_writcombine can be mixed, and the latter sometimes provides
>> 1111 # significant advantages.
>> 1112 #
352 select ARCH_HAS_SETUP_DMA_OPS 1113 select ARCH_HAS_SETUP_DMA_OPS
>> 1114 select ARCH_HAS_DMA_WRITE_COMBINE
>> 1115 select ARCH_HAS_DMA_PREP_COHERENT
353 select ARCH_HAS_SYNC_DMA_FOR_CPU 1116 select ARCH_HAS_SYNC_DMA_FOR_CPU
354 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1117 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if !! 1118 select ARCH_HAS_DMA_SET_UNCACHED
>> 1119 select DMA_NONCOHERENT_MMAP
>> 1120 select NEED_DMA_MAP_STATE
356 1121
357 config RISCV_NONSTANDARD_CACHE_OPS !! 1122 config SYS_HAS_EARLY_PRINTK
358 bool 1123 bool
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 1124
363 config AS_HAS_INSN !! 1125 config SYS_SUPPORTS_HOTPLUG_CPU
364 def_bool $(as-instr,.insn r 51$(comma) !! 1126 bool
365 1127
366 config AS_HAS_OPTION_ARCH !! 1128 config MIPS_BONITO64
367 # https://github.com/llvm/llvm-project !! 1129 bool
368 def_bool y <<
369 depends on $(as-instr, .option arch$(c <<
370 1130
371 source "arch/riscv/Kconfig.socs" !! 1131 config MIPS_MSC
372 source "arch/riscv/Kconfig.errata" !! 1132 bool
373 1133
374 menu "Platform type" !! 1134 config SYNC_R4K
>> 1135 bool
375 1136
376 config NONPORTABLE !! 1137 config NO_IOPORT_MAP
377 bool "Allow configurations that result !! 1138 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 1139
384 Selecting N does not guarantee kerne !! 1140 config GENERIC_CSUM
385 systems. Selecting any of the optio !! 1141 def_bool CPU_NO_LOAD_STORE_LR
386 result in kernel binaries that are u <<
387 systems. <<
388 1142
389 If unsure, say N. !! 1143 config GENERIC_ISA_DMA
>> 1144 bool
>> 1145 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1146 select ISA_DMA_API
390 1147
391 choice !! 1148 config GENERIC_ISA_DMA_SUPPORT_BROKEN
392 prompt "Base ISA" !! 1149 bool
393 default ARCH_RV64I !! 1150 select GENERIC_ISA_DMA
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 1151
398 config ARCH_RV32I !! 1152 config HAVE_PLAT_DELAY
399 bool "RV32I" !! 1153 bool
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 1154
407 config ARCH_RV64I !! 1155 config HAVE_PLAT_FW_INIT_CMDLINE
408 bool "RV64I" !! 1156 bool
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 1157
413 endchoice !! 1158 config HAVE_PLAT_MEMCPY
>> 1159 bool
>> 1160
>> 1161 config ISA_DMA_API
>> 1162 bool
>> 1163
>> 1164 config SYS_SUPPORTS_RELOCATABLE
>> 1165 bool
>> 1166 help
>> 1167 Selected if the platform supports relocating the kernel.
>> 1168 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
>> 1169 to allow access to command line and entropy sources.
414 1170
415 # We must be able to map all physical memory i !! 1171 #
416 # is still a bit more efficient when generatin !! 1172 # Endianness selection. Sufficiently obscure so many users don't know what to
417 # such that it can only map 2GiB of memory. !! 1173 # answer,so we try hard to limit the available choices. Also the use of a
>> 1174 # choice statement should be more obvious to the user.
>> 1175 #
418 choice 1176 choice
419 prompt "Kernel Code Model" !! 1177 prompt "Endianness selection"
420 default CMODEL_MEDLOW if 32BIT !! 1178 help
421 default CMODEL_MEDANY if 64BIT !! 1179 Some MIPS machines can be configured for either little or big endian
422 !! 1180 byte order. These modes require different kernels and a different
423 config CMODEL_MEDLOW !! 1181 Linux distribution. In general there is one preferred byteorder for a
424 bool "medium low code model" !! 1182 particular system but some systems are just as commonly used in the
425 config CMODEL_MEDANY !! 1183 one or the other endianness.
426 bool "medium any code model" !! 1184
>> 1185 config CPU_BIG_ENDIAN
>> 1186 bool "Big endian"
>> 1187 depends on SYS_SUPPORTS_BIG_ENDIAN
>> 1188
>> 1189 config CPU_LITTLE_ENDIAN
>> 1190 bool "Little endian"
>> 1191 depends on SYS_SUPPORTS_LITTLE_ENDIAN
>> 1192
427 endchoice 1193 endchoice
428 1194
429 config MODULE_SECTIONS !! 1195 config EXPORT_UASM
430 bool 1196 bool
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 1197
433 config SMP !! 1198 config SYS_SUPPORTS_APM_EMULATION
434 bool "Symmetric Multi-Processing" !! 1199 bool
435 help <<
436 This enables support for systems wit <<
437 you say N here, the kernel will run <<
438 multiprocessor machines, but will us <<
439 multiprocessor machine. If you say Y <<
440 on many, but not all, single process <<
441 processor machine, the kernel will r <<
442 here. <<
443 1200
444 If you don't know what to do here, s !! 1201 config SYS_SUPPORTS_BIG_ENDIAN
>> 1202 bool
445 1203
446 config SCHED_MC !! 1204 config SYS_SUPPORTS_LITTLE_ENDIAN
447 bool "Multi-core scheduler support" !! 1205 bool
448 depends on SMP <<
449 help <<
450 Multi-core scheduler support improve <<
451 making when dealing with multi-core <<
452 increased overhead in some places. I <<
453 1206
454 config NR_CPUS !! 1207 config MIPS_HUGE_TLB_SUPPORT
455 int "Maximum number of CPUs (2-512)" !! 1208 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
456 depends on SMP <<
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 1209
463 config HOTPLUG_CPU !! 1210 config IRQ_TXX9
464 bool "Support for hot-pluggable CPUs" !! 1211 bool
465 depends on SMP <<
466 select GENERIC_IRQ_MIGRATION <<
467 help <<
468 1212
469 Say Y here to experiment with turnin !! 1213 config IRQ_GT641XX
470 can be controlled through /sys/devic !! 1214 bool
471 1215
472 Say N if you want to disable CPU hot !! 1216 config PCI_GT64XXX_PCI0
>> 1217 bool
>> 1218
>> 1219 config PCI_XTALK_BRIDGE
>> 1220 bool
>> 1221
>> 1222 config NO_EXCEPT_FILL
>> 1223 bool
>> 1224
>> 1225 config MIPS_SPRAM
>> 1226 bool
>> 1227
>> 1228 config SWAP_IO_SPACE
>> 1229 bool
>> 1230
>> 1231 config SGI_HAS_INDYDOG
>> 1232 bool
>> 1233
>> 1234 config SGI_HAS_HAL2
>> 1235 bool
>> 1236
>> 1237 config SGI_HAS_SEEQ
>> 1238 bool
>> 1239
>> 1240 config SGI_HAS_WD93
>> 1241 bool
>> 1242
>> 1243 config SGI_HAS_ZILOG
>> 1244 bool
>> 1245
>> 1246 config SGI_HAS_I8042
>> 1247 bool
>> 1248
>> 1249 config DEFAULT_SGI_PARTITION
>> 1250 bool
>> 1251
>> 1252 config FW_ARC32
>> 1253 bool
>> 1254
>> 1255 config FW_SNIPROM
>> 1256 bool
>> 1257
>> 1258 config BOOT_ELF32
>> 1259 bool
>> 1260
>> 1261 config MIPS_L1_CACHE_SHIFT_4
>> 1262 bool
>> 1263
>> 1264 config MIPS_L1_CACHE_SHIFT_5
>> 1265 bool
>> 1266
>> 1267 config MIPS_L1_CACHE_SHIFT_6
>> 1268 bool
>> 1269
>> 1270 config MIPS_L1_CACHE_SHIFT_7
>> 1271 bool
>> 1272
>> 1273 config MIPS_L1_CACHE_SHIFT
>> 1274 int
>> 1275 default "7" if MIPS_L1_CACHE_SHIFT_7
>> 1276 default "6" if MIPS_L1_CACHE_SHIFT_6
>> 1277 default "5" if MIPS_L1_CACHE_SHIFT_5
>> 1278 default "4" if MIPS_L1_CACHE_SHIFT_4
>> 1279 default "5"
>> 1280
>> 1281 config ARC_CMDLINE_ONLY
>> 1282 bool
>> 1283
>> 1284 config ARC_CONSOLE
>> 1285 bool "ARC console support"
>> 1286 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
>> 1287
>> 1288 config ARC_MEMORY
>> 1289 bool
>> 1290
>> 1291 config ARC_PROMLIB
>> 1292 bool
>> 1293
>> 1294 config FW_ARC64
>> 1295 bool
>> 1296
>> 1297 config BOOT_ELF64
>> 1298 bool
>> 1299
>> 1300 menu "CPU selection"
473 1301
474 choice 1302 choice
475 prompt "CPU Tuning" !! 1303 prompt "CPU type"
476 default TUNE_GENERIC !! 1304 default CPU_R4X00
477 1305
478 config TUNE_GENERIC !! 1306 config CPU_LOONGSON64
479 bool "generic" !! 1307 bool "Loongson 64-bit CPU"
>> 1308 depends on SYS_HAS_CPU_LOONGSON64
>> 1309 select ARCH_HAS_PHYS_TO_DMA
>> 1310 select CPU_MIPSR2
>> 1311 select CPU_HAS_PREFETCH
>> 1312 select CPU_SUPPORTS_64BIT_KERNEL
>> 1313 select CPU_SUPPORTS_HIGHMEM
>> 1314 select CPU_SUPPORTS_HUGEPAGES
>> 1315 select CPU_SUPPORTS_MSA
>> 1316 select CPU_SUPPORTS_VZ
>> 1317 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
>> 1318 select CPU_MIPSR2_IRQ_VI
>> 1319 select DMA_NONCOHERENT
>> 1320 select WEAK_ORDERING
>> 1321 select WEAK_REORDERING_BEYOND_LLSC
>> 1322 select MIPS_ASID_BITS_VARIABLE
>> 1323 select MIPS_PGD_C0_CONTEXT
>> 1324 select MIPS_L1_CACHE_SHIFT_6
>> 1325 select MIPS_FP_SUPPORT
>> 1326 select GPIOLIB
>> 1327 select SWIOTLB
>> 1328 help
>> 1329 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
>> 1330 cores implements the MIPS64R2 instruction set with many extensions,
>> 1331 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
>> 1332 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
>> 1333 Loongson-2E/2F is not covered here and will be removed in future.
>> 1334
>> 1335 config CPU_LOONGSON2E
>> 1336 bool "Loongson 2E"
>> 1337 depends on SYS_HAS_CPU_LOONGSON2E
>> 1338 select CPU_LOONGSON2EF
>> 1339 help
>> 1340 The Loongson 2E processor implements the MIPS III instruction set
>> 1341 with many extensions.
>> 1342
>> 1343 It has an internal FPGA northbridge, which is compatible to
>> 1344 bonito64.
>> 1345
>> 1346 config CPU_LOONGSON2F
>> 1347 bool "Loongson 2F"
>> 1348 depends on SYS_HAS_CPU_LOONGSON2F
>> 1349 select CPU_LOONGSON2EF
>> 1350 help
>> 1351 The Loongson 2F processor implements the MIPS III instruction set
>> 1352 with many extensions.
>> 1353
>> 1354 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
>> 1355 have a similar programming interface with FPGA northbridge used in
>> 1356 Loongson2E.
>> 1357
>> 1358 config CPU_LOONGSON1B
>> 1359 bool "Loongson 1B"
>> 1360 depends on SYS_HAS_CPU_LOONGSON1B
>> 1361 select CPU_LOONGSON32
>> 1362 select LEDS_GPIO_REGISTER
>> 1363 help
>> 1364 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> 1365 Release 1 instruction set and part of the MIPS32 Release 2
>> 1366 instruction set.
>> 1367
>> 1368 config CPU_LOONGSON1C
>> 1369 bool "Loongson 1C"
>> 1370 depends on SYS_HAS_CPU_LOONGSON1C
>> 1371 select CPU_LOONGSON32
>> 1372 select LEDS_GPIO_REGISTER
>> 1373 help
>> 1374 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
>> 1375 Release 1 instruction set and part of the MIPS32 Release 2
>> 1376 instruction set.
>> 1377
>> 1378 config CPU_MIPS32_R1
>> 1379 bool "MIPS32 Release 1"
>> 1380 depends on SYS_HAS_CPU_MIPS32_R1
>> 1381 select CPU_HAS_PREFETCH
>> 1382 select CPU_SUPPORTS_32BIT_KERNEL
>> 1383 select CPU_SUPPORTS_HIGHMEM
>> 1384 help
>> 1385 Choose this option to build a kernel for release 1 or later of the
>> 1386 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1387 MIPS processor are based on a MIPS32 processor. If you know the
>> 1388 specific type of processor in your system, choose those that one
>> 1389 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1390 Release 2 of the MIPS32 architecture is available since several
>> 1391 years so chances are you even have a MIPS32 Release 2 processor
>> 1392 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1393 performance.
>> 1394
>> 1395 config CPU_MIPS32_R2
>> 1396 bool "MIPS32 Release 2"
>> 1397 depends on SYS_HAS_CPU_MIPS32_R2
>> 1398 select CPU_HAS_PREFETCH
>> 1399 select CPU_SUPPORTS_32BIT_KERNEL
>> 1400 select CPU_SUPPORTS_HIGHMEM
>> 1401 select CPU_SUPPORTS_MSA
>> 1402 help
>> 1403 Choose this option to build a kernel for release 2 or later of the
>> 1404 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1405 MIPS processor are based on a MIPS32 processor. If you know the
>> 1406 specific type of processor in your system, choose those that one
>> 1407 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1408
>> 1409 config CPU_MIPS32_R5
>> 1410 bool "MIPS32 Release 5"
>> 1411 depends on SYS_HAS_CPU_MIPS32_R5
>> 1412 select CPU_HAS_PREFETCH
>> 1413 select CPU_SUPPORTS_32BIT_KERNEL
>> 1414 select CPU_SUPPORTS_HIGHMEM
>> 1415 select CPU_SUPPORTS_MSA
>> 1416 select CPU_SUPPORTS_VZ
>> 1417 select MIPS_O32_FP64_SUPPORT
>> 1418 help
>> 1419 Choose this option to build a kernel for release 5 or later of the
>> 1420 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1421 family, are based on a MIPS32r5 processor. If you own an older
>> 1422 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1423
>> 1424 config CPU_MIPS32_R6
>> 1425 bool "MIPS32 Release 6"
>> 1426 depends on SYS_HAS_CPU_MIPS32_R6
>> 1427 select CPU_HAS_PREFETCH
>> 1428 select CPU_NO_LOAD_STORE_LR
>> 1429 select CPU_SUPPORTS_32BIT_KERNEL
>> 1430 select CPU_SUPPORTS_HIGHMEM
>> 1431 select CPU_SUPPORTS_MSA
>> 1432 select CPU_SUPPORTS_VZ
>> 1433 select MIPS_O32_FP64_SUPPORT
>> 1434 help
>> 1435 Choose this option to build a kernel for release 6 or later of the
>> 1436 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1437 family, are based on a MIPS32r6 processor. If you own an older
>> 1438 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1439
>> 1440 config CPU_MIPS64_R1
>> 1441 bool "MIPS64 Release 1"
>> 1442 depends on SYS_HAS_CPU_MIPS64_R1
>> 1443 select CPU_HAS_PREFETCH
>> 1444 select CPU_SUPPORTS_32BIT_KERNEL
>> 1445 select CPU_SUPPORTS_64BIT_KERNEL
>> 1446 select CPU_SUPPORTS_HIGHMEM
>> 1447 select CPU_SUPPORTS_HUGEPAGES
>> 1448 help
>> 1449 Choose this option to build a kernel for release 1 or later of the
>> 1450 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1451 MIPS processor are based on a MIPS64 processor. If you know the
>> 1452 specific type of processor in your system, choose those that one
>> 1453 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1454 Release 2 of the MIPS64 architecture is available since several
>> 1455 years so chances are you even have a MIPS64 Release 2 processor
>> 1456 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1457 performance.
>> 1458
>> 1459 config CPU_MIPS64_R2
>> 1460 bool "MIPS64 Release 2"
>> 1461 depends on SYS_HAS_CPU_MIPS64_R2
>> 1462 select CPU_HAS_PREFETCH
>> 1463 select CPU_SUPPORTS_32BIT_KERNEL
>> 1464 select CPU_SUPPORTS_64BIT_KERNEL
>> 1465 select CPU_SUPPORTS_HIGHMEM
>> 1466 select CPU_SUPPORTS_HUGEPAGES
>> 1467 select CPU_SUPPORTS_MSA
>> 1468 help
>> 1469 Choose this option to build a kernel for release 2 or later of the
>> 1470 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1471 MIPS processor are based on a MIPS64 processor. If you know the
>> 1472 specific type of processor in your system, choose those that one
>> 1473 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1474
>> 1475 config CPU_MIPS64_R5
>> 1476 bool "MIPS64 Release 5"
>> 1477 depends on SYS_HAS_CPU_MIPS64_R5
>> 1478 select CPU_HAS_PREFETCH
>> 1479 select CPU_SUPPORTS_32BIT_KERNEL
>> 1480 select CPU_SUPPORTS_64BIT_KERNEL
>> 1481 select CPU_SUPPORTS_HIGHMEM
>> 1482 select CPU_SUPPORTS_HUGEPAGES
>> 1483 select CPU_SUPPORTS_MSA
>> 1484 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1485 select CPU_SUPPORTS_VZ
>> 1486 help
>> 1487 Choose this option to build a kernel for release 5 or later of the
>> 1488 MIPS64 architecture. This is a intermediate MIPS architecture
>> 1489 release partly implementing release 6 features. Though there is no
>> 1490 any hardware known to be based on this release.
>> 1491
>> 1492 config CPU_MIPS64_R6
>> 1493 bool "MIPS64 Release 6"
>> 1494 depends on SYS_HAS_CPU_MIPS64_R6
>> 1495 select CPU_HAS_PREFETCH
>> 1496 select CPU_NO_LOAD_STORE_LR
>> 1497 select CPU_SUPPORTS_32BIT_KERNEL
>> 1498 select CPU_SUPPORTS_64BIT_KERNEL
>> 1499 select CPU_SUPPORTS_HIGHMEM
>> 1500 select CPU_SUPPORTS_HUGEPAGES
>> 1501 select CPU_SUPPORTS_MSA
>> 1502 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1503 select CPU_SUPPORTS_VZ
>> 1504 help
>> 1505 Choose this option to build a kernel for release 6 or later of the
>> 1506 MIPS64 architecture. New MIPS processors, starting with the Warrior
>> 1507 family, are based on a MIPS64r6 processor. If you own an older
>> 1508 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
>> 1509
>> 1510 config CPU_P5600
>> 1511 bool "MIPS Warrior P5600"
>> 1512 depends on SYS_HAS_CPU_P5600
>> 1513 select CPU_HAS_PREFETCH
>> 1514 select CPU_SUPPORTS_32BIT_KERNEL
>> 1515 select CPU_SUPPORTS_HIGHMEM
>> 1516 select CPU_SUPPORTS_MSA
>> 1517 select CPU_SUPPORTS_CPUFREQ
>> 1518 select CPU_SUPPORTS_VZ
>> 1519 select CPU_MIPSR2_IRQ_VI
>> 1520 select CPU_MIPSR2_IRQ_EI
>> 1521 select MIPS_O32_FP64_SUPPORT
>> 1522 help
>> 1523 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
>> 1524 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
>> 1525 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
>> 1526 level features like up to six P5600 calculation cores, CM2 with L2
>> 1527 cache, IOCU/IOMMU (though might be unused depending on the system-
>> 1528 specific IP core configuration), GIC, CPC, virtualisation module,
>> 1529 eJTAG and PDtrace.
>> 1530
>> 1531 config CPU_R3000
>> 1532 bool "R3000"
>> 1533 depends on SYS_HAS_CPU_R3000
>> 1534 select CPU_HAS_WB
>> 1535 select CPU_R3K_TLB
>> 1536 select CPU_SUPPORTS_32BIT_KERNEL
>> 1537 select CPU_SUPPORTS_HIGHMEM
>> 1538 help
>> 1539 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1540 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1541 *not* work on R4000 machines and vice versa. However, since most
>> 1542 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1543 might be a safe bet. If the resulting kernel does not work,
>> 1544 try to recompile with R3000.
>> 1545
>> 1546 config CPU_R4300
>> 1547 bool "R4300"
>> 1548 depends on SYS_HAS_CPU_R4300
>> 1549 select CPU_SUPPORTS_32BIT_KERNEL
>> 1550 select CPU_SUPPORTS_64BIT_KERNEL
>> 1551 help
>> 1552 MIPS Technologies R4300-series processors.
>> 1553
>> 1554 config CPU_R4X00
>> 1555 bool "R4x00"
>> 1556 depends on SYS_HAS_CPU_R4X00
>> 1557 select CPU_SUPPORTS_32BIT_KERNEL
>> 1558 select CPU_SUPPORTS_64BIT_KERNEL
>> 1559 select CPU_SUPPORTS_HUGEPAGES
>> 1560 help
>> 1561 MIPS Technologies R4000-series processors other than 4300, including
>> 1562 the R4000, R4400, R4600, and 4700.
>> 1563
>> 1564 config CPU_TX49XX
>> 1565 bool "R49XX"
>> 1566 depends on SYS_HAS_CPU_TX49XX
>> 1567 select CPU_HAS_PREFETCH
>> 1568 select CPU_SUPPORTS_32BIT_KERNEL
>> 1569 select CPU_SUPPORTS_64BIT_KERNEL
>> 1570 select CPU_SUPPORTS_HUGEPAGES
>> 1571
>> 1572 config CPU_R5000
>> 1573 bool "R5000"
>> 1574 depends on SYS_HAS_CPU_R5000
>> 1575 select CPU_SUPPORTS_32BIT_KERNEL
>> 1576 select CPU_SUPPORTS_64BIT_KERNEL
>> 1577 select CPU_SUPPORTS_HUGEPAGES
>> 1578 help
>> 1579 MIPS Technologies R5000-series processors other than the Nevada.
>> 1580
>> 1581 config CPU_R5500
>> 1582 bool "R5500"
>> 1583 depends on SYS_HAS_CPU_R5500
>> 1584 select CPU_SUPPORTS_32BIT_KERNEL
>> 1585 select CPU_SUPPORTS_64BIT_KERNEL
>> 1586 select CPU_SUPPORTS_HUGEPAGES
>> 1587 help
>> 1588 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1589 instruction set.
>> 1590
>> 1591 config CPU_NEVADA
>> 1592 bool "RM52xx"
>> 1593 depends on SYS_HAS_CPU_NEVADA
>> 1594 select CPU_SUPPORTS_32BIT_KERNEL
>> 1595 select CPU_SUPPORTS_64BIT_KERNEL
>> 1596 select CPU_SUPPORTS_HUGEPAGES
>> 1597 help
>> 1598 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1599
>> 1600 config CPU_R10000
>> 1601 bool "R10000"
>> 1602 depends on SYS_HAS_CPU_R10000
>> 1603 select CPU_HAS_PREFETCH
>> 1604 select CPU_SUPPORTS_32BIT_KERNEL
>> 1605 select CPU_SUPPORTS_64BIT_KERNEL
>> 1606 select CPU_SUPPORTS_HIGHMEM
>> 1607 select CPU_SUPPORTS_HUGEPAGES
>> 1608 help
>> 1609 MIPS Technologies R10000-series processors.
>> 1610
>> 1611 config CPU_RM7000
>> 1612 bool "RM7000"
>> 1613 depends on SYS_HAS_CPU_RM7000
>> 1614 select CPU_HAS_PREFETCH
>> 1615 select CPU_SUPPORTS_32BIT_KERNEL
>> 1616 select CPU_SUPPORTS_64BIT_KERNEL
>> 1617 select CPU_SUPPORTS_HIGHMEM
>> 1618 select CPU_SUPPORTS_HUGEPAGES
>> 1619
>> 1620 config CPU_SB1
>> 1621 bool "SB1"
>> 1622 depends on SYS_HAS_CPU_SB1
>> 1623 select CPU_SUPPORTS_32BIT_KERNEL
>> 1624 select CPU_SUPPORTS_64BIT_KERNEL
>> 1625 select CPU_SUPPORTS_HIGHMEM
>> 1626 select CPU_SUPPORTS_HUGEPAGES
>> 1627 select WEAK_ORDERING
>> 1628
>> 1629 config CPU_CAVIUM_OCTEON
>> 1630 bool "Cavium Octeon processor"
>> 1631 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1632 select CPU_HAS_PREFETCH
>> 1633 select CPU_SUPPORTS_64BIT_KERNEL
>> 1634 select HAVE_PAGE_SIZE_8KB if !MIPS_VA_BITS_48
>> 1635 select HAVE_PAGE_SIZE_32KB if !MIPS_VA_BITS_48
>> 1636 select WEAK_ORDERING
>> 1637 select CPU_SUPPORTS_HIGHMEM
>> 1638 select CPU_SUPPORTS_HUGEPAGES
>> 1639 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1640 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1641 select MIPS_L1_CACHE_SHIFT_7
>> 1642 select CPU_SUPPORTS_VZ
>> 1643 help
>> 1644 The Cavium Octeon processor is a highly integrated chip containing
>> 1645 many ethernet hardware widgets for networking tasks. The processor
>> 1646 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1647 Full details can be found at http://www.caviumnetworks.com.
>> 1648
>> 1649 config CPU_BMIPS
>> 1650 bool "Broadcom BMIPS"
>> 1651 depends on SYS_HAS_CPU_BMIPS
>> 1652 select CPU_MIPS32
>> 1653 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
>> 1654 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
>> 1655 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
>> 1656 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
>> 1657 select CPU_SUPPORTS_32BIT_KERNEL
>> 1658 select DMA_NONCOHERENT
>> 1659 select IRQ_MIPS_CPU
>> 1660 select SWAP_IO_SPACE
>> 1661 select WEAK_ORDERING
>> 1662 select CPU_SUPPORTS_HIGHMEM
>> 1663 select CPU_HAS_PREFETCH
>> 1664 select CPU_SUPPORTS_CPUFREQ
>> 1665 select MIPS_EXTERNAL_TIMER
>> 1666 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
>> 1667 help
>> 1668 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
480 1669
481 endchoice 1670 endchoice
482 1671
483 # Common NUMA Features !! 1672 config LOONGSON3_ENHANCEMENT
484 config NUMA !! 1673 bool "New Loongson-3 CPU Enhancements"
485 bool "NUMA Memory Allocation and Sched !! 1674 default n
486 depends on SMP && MMU !! 1675 depends on CPU_LOONGSON64
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 1676 help
495 Enable NUMA (Non-Uniform Memory Acce !! 1677 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
>> 1678 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
>> 1679 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
>> 1680 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
>> 1681 Fast TLB refill support, etc.
>> 1682
>> 1683 This option enable those enhancements which are not probed at run
>> 1684 time. If you want a generic kernel to run on all Loongson 3 machines,
>> 1685 please say 'N' here. If you want a high-performance kernel to run on
>> 1686 new Loongson-3 machines only, please say 'Y' here.
>> 1687
>> 1688 config CPU_LOONGSON3_WORKAROUNDS
>> 1689 bool "Loongson-3 LLSC Workarounds"
>> 1690 default y if SMP
>> 1691 depends on CPU_LOONGSON64
>> 1692 help
>> 1693 Loongson-3 processors have the llsc issues which require workarounds.
>> 1694 Without workarounds the system may hang unexpectedly.
>> 1695
>> 1696 Say Y, unless you know what you are doing.
>> 1697
>> 1698 config CPU_LOONGSON3_CPUCFG_EMULATION
>> 1699 bool "Emulate the CPUCFG instruction on older Loongson cores"
>> 1700 default y
>> 1701 depends on CPU_LOONGSON64
>> 1702 help
>> 1703 Loongson-3A R4 and newer have the CPUCFG instruction available for
>> 1704 userland to query CPU capabilities, much like CPUID on x86. This
>> 1705 option provides emulation of the instruction on older Loongson
>> 1706 cores, back to Loongson-3A1000.
>> 1707
>> 1708 If unsure, please say Y.
>> 1709
>> 1710 config CPU_MIPS32_3_5_FEATURES
>> 1711 bool "MIPS32 Release 3.5 Features"
>> 1712 depends on SYS_HAS_CPU_MIPS32_R3_5
>> 1713 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
>> 1714 CPU_P5600
>> 1715 help
>> 1716 Choose this option to build a kernel for release 2 or later of the
>> 1717 MIPS32 architecture including features from the 3.5 release such as
>> 1718 support for Enhanced Virtual Addressing (EVA).
>> 1719
>> 1720 config CPU_MIPS32_3_5_EVA
>> 1721 bool "Enhanced Virtual Addressing (EVA)"
>> 1722 depends on CPU_MIPS32_3_5_FEATURES
>> 1723 select EVA
>> 1724 default y
>> 1725 help
>> 1726 Choose this option if you want to enable the Enhanced Virtual
>> 1727 Addressing (EVA) on your MIPS32 core (such as proAptiv).
>> 1728 One of its primary benefits is an increase in the maximum size
>> 1729 of lowmem (up to 3GB). If unsure, say 'N' here.
>> 1730
>> 1731 config CPU_MIPS32_R5_FEATURES
>> 1732 bool "MIPS32 Release 5 Features"
>> 1733 depends on SYS_HAS_CPU_MIPS32_R5
>> 1734 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
>> 1735 help
>> 1736 Choose this option to build a kernel for release 2 or later of the
>> 1737 MIPS32 architecture including features from release 5 such as
>> 1738 support for Extended Physical Addressing (XPA).
>> 1739
>> 1740 config CPU_MIPS32_R5_XPA
>> 1741 bool "Extended Physical Addressing (XPA)"
>> 1742 depends on CPU_MIPS32_R5_FEATURES
>> 1743 depends on !EVA
>> 1744 depends on !PAGE_SIZE_4KB
>> 1745 depends on SYS_SUPPORTS_HIGHMEM
>> 1746 select XPA
>> 1747 select HIGHMEM
>> 1748 select PHYS_ADDR_T_64BIT
>> 1749 default n
>> 1750 help
>> 1751 Choose this option if you want to enable the Extended Physical
>> 1752 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
>> 1753 benefit is to increase physical addressing equal to or greater
>> 1754 than 40 bits. Note that this has the side effect of turning on
>> 1755 64-bit addressing which in turn makes the PTEs 64-bit in size.
>> 1756 If unsure, say 'N' here.
496 1757
497 The kernel will try to allocate memo !! 1758 if CPU_LOONGSON2F
498 local memory of the CPU and add some !! 1759 config CPU_NOP_WORKAROUNDS
>> 1760 bool
499 1761
500 config NODES_SHIFT !! 1762 config CPU_JUMP_WORKAROUNDS
501 int "Maximum NUMA Nodes (as a power of !! 1763 bool
502 range 1 10 !! 1764
503 default "2" !! 1765 config CPU_LOONGSON2F_WORKAROUNDS
504 depends on NUMA !! 1766 bool "Loongson 2F Workarounds"
>> 1767 default y
>> 1768 select CPU_NOP_WORKAROUNDS
>> 1769 select CPU_JUMP_WORKAROUNDS
505 help 1770 help
506 Specify the maximum number of NUMA N !! 1771 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
507 system. Increases memory reserved t !! 1772 require workarounds. Without workarounds the system may hang
>> 1773 unexpectedly. For more information please refer to the gas
>> 1774 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
>> 1775
>> 1776 Loongson 2F03 and later have fixed these issues and no workarounds
>> 1777 are needed. The workarounds have no significant side effect on them
>> 1778 but may decrease the performance of the system so this option should
>> 1779 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1780 systems.
>> 1781
>> 1782 If unsure, please say Y.
>> 1783 endif # CPU_LOONGSON2F
>> 1784
>> 1785 config SYS_SUPPORTS_ZBOOT
>> 1786 bool
>> 1787 select HAVE_KERNEL_GZIP
>> 1788 select HAVE_KERNEL_BZIP2
>> 1789 select HAVE_KERNEL_LZ4
>> 1790 select HAVE_KERNEL_LZMA
>> 1791 select HAVE_KERNEL_LZO
>> 1792 select HAVE_KERNEL_XZ
>> 1793 select HAVE_KERNEL_ZSTD
>> 1794
>> 1795 config SYS_SUPPORTS_ZBOOT_UART16550
>> 1796 bool
>> 1797 select SYS_SUPPORTS_ZBOOT
>> 1798
>> 1799 config SYS_SUPPORTS_ZBOOT_UART_PROM
>> 1800 bool
>> 1801 select SYS_SUPPORTS_ZBOOT
>> 1802
>> 1803 config CPU_LOONGSON2EF
>> 1804 bool
>> 1805 select CPU_SUPPORTS_32BIT_KERNEL
>> 1806 select CPU_SUPPORTS_64BIT_KERNEL
>> 1807 select CPU_SUPPORTS_HIGHMEM
>> 1808 select CPU_SUPPORTS_HUGEPAGES
>> 1809
>> 1810 config CPU_LOONGSON32
>> 1811 bool
>> 1812 select CPU_MIPS32
>> 1813 select CPU_MIPSR2
>> 1814 select CPU_HAS_PREFETCH
>> 1815 select CPU_SUPPORTS_32BIT_KERNEL
>> 1816 select CPU_SUPPORTS_HIGHMEM
>> 1817 select CPU_SUPPORTS_CPUFREQ
>> 1818
>> 1819 config CPU_BMIPS32_3300
>> 1820 select SMP_UP if SMP
>> 1821 bool
>> 1822
>> 1823 config CPU_BMIPS4350
>> 1824 bool
>> 1825 select SYS_SUPPORTS_SMP
>> 1826 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1827
>> 1828 config CPU_BMIPS4380
>> 1829 bool
>> 1830 select MIPS_L1_CACHE_SHIFT_6
>> 1831 select SYS_SUPPORTS_SMP
>> 1832 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1833 select CPU_HAS_RIXI
>> 1834
>> 1835 config CPU_BMIPS5000
>> 1836 bool
>> 1837 select MIPS_CPU_SCACHE
>> 1838 select MIPS_L1_CACHE_SHIFT_7
>> 1839 select SYS_SUPPORTS_SMP
>> 1840 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1841 select CPU_HAS_RIXI
>> 1842
>> 1843 config SYS_HAS_CPU_LOONGSON64
>> 1844 bool
>> 1845 select CPU_SUPPORTS_CPUFREQ
>> 1846 select CPU_HAS_RIXI
>> 1847
>> 1848 config SYS_HAS_CPU_LOONGSON2E
>> 1849 bool
>> 1850
>> 1851 config SYS_HAS_CPU_LOONGSON2F
>> 1852 bool
>> 1853 select CPU_SUPPORTS_CPUFREQ
>> 1854 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1855
>> 1856 config SYS_HAS_CPU_LOONGSON1B
>> 1857 bool
>> 1858
>> 1859 config SYS_HAS_CPU_LOONGSON1C
>> 1860 bool
>> 1861
>> 1862 config SYS_HAS_CPU_MIPS32_R1
>> 1863 bool
>> 1864
>> 1865 config SYS_HAS_CPU_MIPS32_R2
>> 1866 bool
>> 1867
>> 1868 config SYS_HAS_CPU_MIPS32_R3_5
>> 1869 bool
>> 1870
>> 1871 config SYS_HAS_CPU_MIPS32_R5
>> 1872 bool
>> 1873
>> 1874 config SYS_HAS_CPU_MIPS32_R6
>> 1875 bool
>> 1876
>> 1877 config SYS_HAS_CPU_MIPS64_R1
>> 1878 bool
>> 1879
>> 1880 config SYS_HAS_CPU_MIPS64_R2
>> 1881 bool
>> 1882
>> 1883 config SYS_HAS_CPU_MIPS64_R5
>> 1884 bool
>> 1885
>> 1886 config SYS_HAS_CPU_MIPS64_R6
>> 1887 bool
>> 1888
>> 1889 config SYS_HAS_CPU_P5600
>> 1890 bool
>> 1891
>> 1892 config SYS_HAS_CPU_R3000
>> 1893 bool
>> 1894
>> 1895 config SYS_HAS_CPU_R4300
>> 1896 bool
>> 1897
>> 1898 config SYS_HAS_CPU_R4X00
>> 1899 bool
>> 1900
>> 1901 config SYS_HAS_CPU_TX49XX
>> 1902 bool
>> 1903
>> 1904 config SYS_HAS_CPU_R5000
>> 1905 bool
>> 1906
>> 1907 config SYS_HAS_CPU_R5500
>> 1908 bool
>> 1909
>> 1910 config SYS_HAS_CPU_NEVADA
>> 1911 bool
>> 1912
>> 1913 config SYS_HAS_CPU_R10000
>> 1914 bool
>> 1915
>> 1916 config SYS_HAS_CPU_RM7000
>> 1917 bool
>> 1918
>> 1919 config SYS_HAS_CPU_SB1
>> 1920 bool
>> 1921
>> 1922 config SYS_HAS_CPU_CAVIUM_OCTEON
>> 1923 bool
>> 1924
>> 1925 config SYS_HAS_CPU_BMIPS
>> 1926 bool
>> 1927
>> 1928 config SYS_HAS_CPU_BMIPS32_3300
>> 1929 bool
>> 1930 select SYS_HAS_CPU_BMIPS
>> 1931
>> 1932 config SYS_HAS_CPU_BMIPS4350
>> 1933 bool
>> 1934 select SYS_HAS_CPU_BMIPS
>> 1935
>> 1936 config SYS_HAS_CPU_BMIPS4380
>> 1937 bool
>> 1938 select SYS_HAS_CPU_BMIPS
>> 1939
>> 1940 config SYS_HAS_CPU_BMIPS5000
>> 1941 bool
>> 1942 select SYS_HAS_CPU_BMIPS
>> 1943
>> 1944 #
>> 1945 # CPU may reorder R->R, R->W, W->R, W->W
>> 1946 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 1947 #
>> 1948 config WEAK_ORDERING
>> 1949 bool
>> 1950
>> 1951 #
>> 1952 # CPU may reorder reads and writes beyond LL/SC
>> 1953 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 1954 #
>> 1955 config WEAK_REORDERING_BEYOND_LLSC
>> 1956 bool
>> 1957 endmenu
>> 1958
>> 1959 #
>> 1960 # These two indicate any level of the MIPS32 and MIPS64 architecture
>> 1961 #
>> 1962 config CPU_MIPS32
>> 1963 bool
>> 1964 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
>> 1965 CPU_MIPS32_R6 || CPU_P5600
>> 1966
>> 1967 config CPU_MIPS64
>> 1968 bool
>> 1969 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
>> 1970 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON
508 1971
509 config RISCV_ALTERNATIVE !! 1972 #
>> 1973 # These indicate the revision of the architecture
>> 1974 #
>> 1975 config CPU_MIPSR1
>> 1976 bool
>> 1977 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
>> 1978
>> 1979 config CPU_MIPSR2
>> 1980 bool
>> 1981 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
>> 1982 select CPU_HAS_RIXI
>> 1983 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1984 select MIPS_SPRAM
>> 1985
>> 1986 config CPU_MIPSR5
510 bool 1987 bool
511 depends on !XIP_KERNEL !! 1988 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
>> 1989 select CPU_HAS_RIXI
>> 1990 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1991 select MIPS_SPRAM
>> 1992
>> 1993 config CPU_MIPSR6
>> 1994 bool
>> 1995 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
>> 1996 select CPU_HAS_RIXI
>> 1997 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
>> 1998 select HAVE_ARCH_BITREVERSE
>> 1999 select MIPS_ASID_BITS_VARIABLE
>> 2000 select MIPS_CRC_SUPPORT
>> 2001 select MIPS_SPRAM
>> 2002
>> 2003 config TARGET_ISA_REV
>> 2004 int
>> 2005 default 1 if CPU_MIPSR1
>> 2006 default 2 if CPU_MIPSR2
>> 2007 default 5 if CPU_MIPSR5
>> 2008 default 6 if CPU_MIPSR6
>> 2009 default 0
512 help 2010 help
513 This Kconfig allows the kernel to au !! 2011 Reflects the ISA revision being targeted by the kernel build. This
514 erratum or cpufeature required by th !! 2012 is effectively the Kconfig equivalent of MIPS_ISA_REV.
515 time. The code patching overhead is !! 2013
516 once at boot and once on each module !! 2014 config EVA
>> 2015 bool
517 2016
518 config RISCV_ALTERNATIVE_EARLY !! 2017 config XPA
519 bool 2018 bool
520 depends on RISCV_ALTERNATIVE !! 2019
>> 2020 config SYS_SUPPORTS_32BIT_KERNEL
>> 2021 bool
>> 2022 config SYS_SUPPORTS_64BIT_KERNEL
>> 2023 bool
>> 2024 config CPU_SUPPORTS_32BIT_KERNEL
>> 2025 bool
>> 2026 config CPU_SUPPORTS_64BIT_KERNEL
>> 2027 bool
>> 2028 config CPU_SUPPORTS_CPUFREQ
>> 2029 bool
>> 2030 config CPU_SUPPORTS_ADDRWINCFG
>> 2031 bool
>> 2032 config CPU_SUPPORTS_HUGEPAGES
>> 2033 bool
>> 2034 depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA))
>> 2035 config CPU_SUPPORTS_VZ
>> 2036 bool
>> 2037 config MIPS_PGD_C0_CONTEXT
>> 2038 bool
>> 2039 depends on 64BIT
>> 2040 default y if (CPU_MIPSR2 || CPU_MIPSR6)
>> 2041
>> 2042 #
>> 2043 # Set to y for ptrace access to watch registers.
>> 2044 #
>> 2045 config HARDWARE_WATCHPOINTS
>> 2046 bool
>> 2047 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
>> 2048
>> 2049 menu "Kernel type"
>> 2050
>> 2051 choice
>> 2052 prompt "Kernel code model"
521 help 2053 help
522 Allows early patching of the kernel !! 2054 You should only select this option if you have a workload that
>> 2055 actually benefits from 64-bit processing or if your machine has
>> 2056 large memory. You will only be presented a single option in this
>> 2057 menu if your system does not support both 32-bit and 64-bit kernels.
523 2058
524 config RISCV_ISA_C !! 2059 config 32BIT
525 bool "Emit compressed instructions whe !! 2060 bool "32-bit kernel"
526 default y !! 2061 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
>> 2062 select TRAD_SIGNALS
527 help 2063 help
528 Adds "C" to the ISA subsets that the !! 2064 Select this option if you want to build a 32-bit kernel.
529 when building Linux, which results i !! 2065
530 Linux binary. !! 2066 config 64BIT
531 !! 2067 bool "64-bit kernel"
532 If you don't know what to do here, s !! 2068 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
533 <<
534 config RISCV_ISA_SVNAPOT <<
535 bool "Svnapot extension support for su <<
536 depends on 64BIT && MMU <<
537 depends on RISCV_ALTERNATIVE <<
538 default y <<
539 help 2069 help
540 Allow kernel to detect the Svnapot I !! 2070 Select this option if you want to build a 64-bit kernel.
541 time and enable its usage. <<
542 2071
543 The Svnapot extension is used to mar !! 2072 endchoice
544 of contiguous virtual-to-physical tr !! 2073
545 aligned power-of-2 (NAPOT) granulari !! 2074 config MIPS_VA_BITS_48
546 size. When HUGETLBFS is also selecte !! 2075 bool "48 bits virtual memory"
547 allocates some memory for each NAPOT !! 2076 depends on 64BIT
548 When optimizing for low memory consu <<
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 <<
558 help 2077 help
559 Adds support to dynamically detect !! 2078 Support a maximum at least 48 bits of application virtual
560 ISA-extension (Supervisor-mode: pag !! 2079 memory. Default is 40 bits or less, depending on the CPU.
561 enable its usage. !! 2080 For page sizes 16k and above, this option results in a small
>> 2081 memory overhead for page tables. For 4k page size, a fourth
>> 2082 level of page tables is added which imposes both a memory
>> 2083 overhead as well as slower TLB fault handling.
562 2084
563 The memory type for a page contains !! 2085 If unsure, say N.
564 that indicate the cacheability, ide <<
565 properties for access to that page. <<
566 2086
567 The Svpbmt extension is only availa !! 2087 config ZBOOT_LOAD_ADDRESS
>> 2088 hex "Compressed kernel load address"
>> 2089 default 0xffffffff80400000 if BCM47XX
>> 2090 default 0x0
>> 2091 depends on SYS_SUPPORTS_ZBOOT
>> 2092 help
>> 2093 The address to load compressed kernel, aka vmlinuz.
>> 2094
>> 2095 This is only used if non-zero.
>> 2096
>> 2097 config ARCH_FORCE_MAX_ORDER
>> 2098 int "Maximum zone order"
>> 2099 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2100 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2101 default "11" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2102 default "10"
>> 2103 help
>> 2104 The kernel memory allocator divides physically contiguous memory
>> 2105 blocks into "zones", where each zone is a power of two number of
>> 2106 pages. This option selects the largest power of two that the kernel
>> 2107 keeps in the memory allocator. If you need to allocate very large
>> 2108 blocks of physically contiguous memory, then you may need to
>> 2109 increase this value.
568 2110
569 If you don't know what to do here, !! 2111 The page size is not necessarily 4KB. Keep this in mind
>> 2112 when choosing a value for this option.
570 2113
571 config TOOLCHAIN_HAS_V !! 2114 config BOARD_SCACHE
572 bool 2115 bool
573 default y <<
574 depends on !64BIT || $(cc-option,-mabi <<
575 depends on !32BIT || $(cc-option,-mabi <<
576 depends on LLD_VERSION >= 140000 || LD <<
577 depends on AS_HAS_OPTION_ARCH <<
578 <<
579 config RISCV_ISA_V <<
580 bool "VECTOR extension support" <<
581 depends on TOOLCHAIN_HAS_V <<
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y <<
585 help <<
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 2116
589 If you don't know what to do here, s !! 2117 config IP22_CPU_SCACHE
>> 2118 bool
>> 2119 select BOARD_SCACHE
590 2120
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 2121 #
592 bool "Enable userspace Vector by defau !! 2122 # Support for a MIPS32 / MIPS64 style S-caches
593 depends on RISCV_ISA_V !! 2123 #
594 default y !! 2124 config MIPS_CPU_SCACHE
>> 2125 bool
>> 2126 select BOARD_SCACHE
>> 2127
>> 2128 config R5000_CPU_SCACHE
>> 2129 bool
>> 2130 select BOARD_SCACHE
>> 2131
>> 2132 config RM7000_CPU_SCACHE
>> 2133 bool
>> 2134 select BOARD_SCACHE
>> 2135
>> 2136 config SIBYTE_DMA_PAGEOPS
>> 2137 bool "Use DMA to clear/copy pages"
>> 2138 depends on CPU_SB1
595 help 2139 help
596 Say Y here if you want to enable Vec !! 2140 Instead of using the CPU to zero and copy pages, use a Data Mover
597 Otherwise, userspace has to make exp !! 2141 channel. These DMA channels are otherwise unused by the standard
598 Vector, or enable it via the sysctl !! 2142 SiByte Linux port. Seems to give a small performance benefit.
599 !! 2143
600 If you don't know what to do here, s !! 2144 config CPU_HAS_PREFETCH
601 !! 2145 bool
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 2146
603 int "Threshold size for vectorized use !! 2147 config CPU_GENERIC_DUMP_TLB
604 depends on RISCV_ISA_V !! 2148 bool
605 default 768 !! 2149 default y if !CPU_R3000
606 help !! 2150
607 Prefer using vectorized copy_to_user !! 2151 config MIPS_FP_SUPPORT
608 workload size exceeds this value. !! 2152 bool "Floating Point support" if EXPERT
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 2153 default y
615 help 2154 help
616 Usually, in-kernel SIMD routines are !! 2155 Select y to include support for floating point in the kernel
617 Functions which envoke long running !! 2156 including initialization of FPU hardware, FP context save & restore
618 vector unit to prevent blocking othe !! 2157 and emulation of an FPU where necessary. Without this support any
619 !! 2158 userland program attempting to use floating point instructions will
620 This config allows kernel to run SIM !! 2159 receive a SIGILL.
621 preemption. Enabling this config wil !! 2160
622 consumption due to the allocation of !! 2161 If you know that your userland will not attempt to use floating point
623 !! 2162 instructions then you can say n here to shrink the kernel a little.
624 config RISCV_ISA_ZAWRS !! 2163
625 bool "Zawrs extension support for more !! 2164 If unsure, say y.
626 depends on RISCV_ALTERNATIVE !! 2165
>> 2166 config CPU_R2300_FPU
>> 2167 bool
>> 2168 depends on MIPS_FP_SUPPORT
>> 2169 default y if CPU_R3000
>> 2170
>> 2171 config CPU_R3K_TLB
>> 2172 bool
>> 2173
>> 2174 config CPU_R4K_FPU
>> 2175 bool
>> 2176 depends on MIPS_FP_SUPPORT
>> 2177 default y if !CPU_R2300_FPU
>> 2178
>> 2179 config CPU_R4K_CACHE_TLB
>> 2180 bool
>> 2181 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
>> 2182
>> 2183 config MIPS_MT_SMP
>> 2184 bool "MIPS MT SMP support (1 TC on each available VPE)"
627 default y 2185 default y
>> 2186 depends on TARGET_ISA_REV > 0 && TARGET_ISA_REV < 6
>> 2187 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MICROMIPS
>> 2188 select CPU_MIPSR2_IRQ_VI
>> 2189 select CPU_MIPSR2_IRQ_EI
>> 2190 select SYNC_R4K
>> 2191 select MIPS_MT
>> 2192 select SMP
>> 2193 select SMP_UP
>> 2194 select SYS_SUPPORTS_SMP
>> 2195 select SYS_SUPPORTS_SCHED_SMT
>> 2196 select MIPS_PERF_SHARED_TC_COUNTERS
>> 2197 help
>> 2198 This is a kernel model which is known as SMVP. This is supported
>> 2199 on cores with the MT ASE and uses the available VPEs to implement
>> 2200 virtual processors which supports SMP. This is equivalent to the
>> 2201 Intel Hyperthreading feature. For further information go to
>> 2202 <http://www.imgtec.com/mips/mips-multithreading.asp>.
>> 2203
>> 2204 config MIPS_MT
>> 2205 bool
>> 2206
>> 2207 config SCHED_SMT
>> 2208 bool "SMT (multithreading) scheduler support"
>> 2209 depends on SYS_SUPPORTS_SCHED_SMT
>> 2210 default n
628 help 2211 help
629 The Zawrs extension defines instruct !! 2212 SMT scheduler support improves the CPU scheduler's decision making
630 which allow a hart to enter a low-po !! 2213 when dealing with MIPS MT enabled cores at a cost of slightly
631 hypervisor while waiting on a store !! 2214 increased overhead in some places. If unsure say N here.
632 use of these instructions in the ker <<
633 detected at boot. <<
634 2215
635 If you don't know what to do here, s !! 2216 config SYS_SUPPORTS_SCHED_SMT
>> 2217 bool
636 2218
637 config TOOLCHAIN_HAS_ZBB !! 2219 config SYS_SUPPORTS_MULTITHREADING
638 bool 2220 bool
>> 2221
>> 2222 config MIPS_MT_FPAFF
>> 2223 bool "Dynamic FPU affinity for FP-intensive threads"
639 default y 2224 default y
640 depends on !64BIT || $(cc-option,-mabi !! 2225 depends on MIPS_MT_SMP
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 2226
652 config RISCV_ISA_ZBA !! 2227 config MIPSR2_TO_R6_EMULATOR
653 bool "Zba extension support for bit ma !! 2228 bool "MIPS R2-to-R6 emulator"
>> 2229 depends on CPU_MIPSR6
>> 2230 depends on MIPS_FP_SUPPORT
654 default y 2231 default y
655 help 2232 help
656 Add support for enabling optimisati !! 2233 Choose this option if you want to run non-R6 MIPS userland code.
657 extension is detected at boot. !! 2234 Even if you say 'Y' here, the emulator will still be disabled by
>> 2235 default. You can enable it using the 'mipsr2emu' kernel option.
>> 2236 The only reason this is a build-time option is to save ~14K from the
>> 2237 final kernel image.
>> 2238
>> 2239 config SYS_SUPPORTS_VPE_LOADER
>> 2240 bool
>> 2241 depends on SYS_SUPPORTS_MULTITHREADING
>> 2242 help
>> 2243 Indicates that the platform supports the VPE loader, and provides
>> 2244 physical_memsize.
658 2245
659 The Zba extension provides instruct !! 2246 config MIPS_VPE_LOADER
660 of addresses that index into arrays !! 2247 bool "VPE loader support."
>> 2248 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
>> 2249 select CPU_MIPSR2_IRQ_VI
>> 2250 select CPU_MIPSR2_IRQ_EI
>> 2251 select MIPS_MT
>> 2252 help
>> 2253 Includes a loader for loading an elf relocatable object
>> 2254 onto another VPE and running it.
661 2255
662 If you don't know what to do here, !! 2256 config MIPS_VPE_LOADER_MT
>> 2257 bool
>> 2258 default "y"
>> 2259 depends on MIPS_VPE_LOADER
663 2260
664 config RISCV_ISA_ZBB !! 2261 config MIPS_VPE_LOADER_TOM
665 bool "Zbb extension support for bit ma !! 2262 bool "Load VPE program into memory hidden from linux"
666 depends on TOOLCHAIN_HAS_ZBB !! 2263 depends on MIPS_VPE_LOADER
667 depends on RISCV_ALTERNATIVE <<
668 default y 2264 default y
669 help 2265 help
670 Adds support to dynamically detect !! 2266 The loader can use memory that is present but has been hidden from
671 extension (basic bit manipulation) !! 2267 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2268 you to ensure the amount you put in the option and the space your
>> 2269 program requires is less or equal to the amount physically present.
672 2270
673 The Zbb extension provides instruct !! 2271 config MIPS_VPE_APSP_API
674 of bit-specific operations (count b !! 2272 bool "Enable support for AP/SP API (RTLX)"
675 bitrotation, etc). !! 2273 depends on MIPS_VPE_LOADER
676 2274
677 If you don't know what to do here, !! 2275 config MIPS_VPE_APSP_API_MT
>> 2276 bool
>> 2277 default "y"
>> 2278 depends on MIPS_VPE_APSP_API
>> 2279
>> 2280 config MIPS_CPS
>> 2281 bool "MIPS Coherent Processing System support"
>> 2282 depends on SYS_SUPPORTS_MIPS_CPS
>> 2283 select MIPS_CM
>> 2284 select MIPS_CPS_PM if HOTPLUG_CPU
>> 2285 select SMP
>> 2286 select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
>> 2287 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
>> 2288 select SYS_SUPPORTS_HOTPLUG_CPU
>> 2289 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
>> 2290 select SYS_SUPPORTS_SMP
>> 2291 select WEAK_ORDERING
>> 2292 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
>> 2293 help
>> 2294 Select this if you wish to run an SMP kernel across multiple cores
>> 2295 within a MIPS Coherent Processing System. When this option is
>> 2296 enabled the kernel will probe for other cores and boot them with
>> 2297 no external assistance. It is safe to enable this when hardware
>> 2298 support is unavailable.
678 2299
679 config TOOLCHAIN_HAS_ZBC !! 2300 config MIPS_CPS_PM
>> 2301 depends on MIPS_CPS
680 bool 2302 bool
>> 2303
>> 2304 config MIPS_CM
>> 2305 bool
>> 2306 select MIPS_CPC
>> 2307
>> 2308 config MIPS_CPC
>> 2309 bool
>> 2310
>> 2311 config SB1_PASS_2_WORKAROUNDS
>> 2312 bool
>> 2313 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
681 default y 2314 default y
682 depends on !64BIT || $(cc-option,-mabi !! 2315
683 depends on !32BIT || $(cc-option,-mabi !! 2316 config SB1_PASS_2_1_WORKAROUNDS
684 depends on LLD_VERSION >= 150000 || LD !! 2317 bool
685 depends on AS_HAS_OPTION_ARCH !! 2318 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 2319 default y
>> 2320
>> 2321 choice
>> 2322 prompt "SmartMIPS or microMIPS ASE support"
>> 2323
>> 2324 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
>> 2325 bool "None"
693 help 2326 help
694 Adds support to dynamically detect !! 2327 Select this if you want neither microMIPS nor SmartMIPS support
695 extension (carry-less multiplicatio <<
696 2328
697 The Zbc extension could accelerate !! 2329 config CPU_HAS_SMARTMIPS
698 calculations. !! 2330 depends on SYS_SUPPORTS_SMARTMIPS
>> 2331 bool "SmartMIPS"
>> 2332 help
>> 2333 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2334 increased security at both hardware and software level for
>> 2335 smartcards. Enabling this option will allow proper use of the
>> 2336 SmartMIPS instructions by Linux applications. However a kernel with
>> 2337 this option will not work on a MIPS core without SmartMIPS core. If
>> 2338 you don't know you probably don't have SmartMIPS and should say N
>> 2339 here.
699 2340
700 If you don't know what to do here, !! 2341 config CPU_MICROMIPS
>> 2342 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
>> 2343 bool "microMIPS"
>> 2344 help
>> 2345 When this option is enabled the kernel will be built using the
>> 2346 microMIPS ISA
701 2347
702 config RISCV_ISA_ZICBOM !! 2348 endchoice
703 bool "Zicbom extension support for non !! 2349
704 depends on MMU !! 2350 config CPU_HAS_MSA
705 depends on RISCV_ALTERNATIVE !! 2351 bool "Support for the MIPS SIMD Architecture"
706 default y !! 2352 depends on CPU_SUPPORTS_MSA
707 select RISCV_DMA_NONCOHERENT !! 2353 depends on MIPS_FP_SUPPORT
708 select DMA_DIRECT_REMAP !! 2354 depends on 64BIT || MIPS_O32_FP64_SUPPORT
>> 2355 help
>> 2356 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
>> 2357 and a set of SIMD instructions to operate on them. When this option
>> 2358 is enabled the kernel will support allocating & switching MSA
>> 2359 vector register contexts. If you know that your kernel will only be
>> 2360 running on CPUs which do not support MSA or that your userland will
>> 2361 not be making use of it then you may wish to say N here to reduce
>> 2362 the size & complexity of your kernel.
>> 2363
>> 2364 If unsure, say Y.
>> 2365
>> 2366 config CPU_HAS_WB
>> 2367 bool
>> 2368
>> 2369 config XKS01
>> 2370 bool
>> 2371
>> 2372 config CPU_HAS_DIEI
>> 2373 depends on !CPU_DIEI_BROKEN
>> 2374 bool
>> 2375
>> 2376 config CPU_DIEI_BROKEN
>> 2377 bool
>> 2378
>> 2379 config CPU_HAS_RIXI
>> 2380 bool
>> 2381
>> 2382 config CPU_NO_LOAD_STORE_LR
>> 2383 bool
709 help 2384 help
710 Adds support to dynamically detect !! 2385 CPU lacks support for unaligned load and store instructions:
711 extension (Cache Block Management O !! 2386 LWL, LWR, SWL, SWR (Load/store word left/right).
712 usage. !! 2387 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
>> 2388 systems).
713 2389
714 The Zicbom extension can be used to !! 2390 #
715 non-coherent DMA support on devices !! 2391 # Vectored interrupt mode is an R2 feature
>> 2392 #
>> 2393 config CPU_MIPSR2_IRQ_VI
>> 2394 bool
716 2395
717 If you don't know what to do here, !! 2396 #
>> 2397 # Extended interrupt mode is an R2 feature
>> 2398 #
>> 2399 config CPU_MIPSR2_IRQ_EI
>> 2400 bool
718 2401
719 config RISCV_ISA_ZICBOZ !! 2402 config CPU_HAS_SYNC
720 bool "Zicboz extension support for fas !! 2403 bool
721 depends on RISCV_ALTERNATIVE !! 2404 depends on !CPU_R3000
722 default y 2405 default y
723 help <<
724 Enable the use of the Zicboz extens <<
725 when available. <<
726 2406
727 The Zicboz extension is used for fa !! 2407 #
>> 2408 # CPU non-features
>> 2409 #
>> 2410
>> 2411 # Work around the "daddi" and "daddiu" CPU errata:
>> 2412 #
>> 2413 # - The `daddi' instruction fails to trap on overflow.
>> 2414 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2415 # erratum #23
>> 2416 #
>> 2417 # - The `daddiu' instruction can produce an incorrect result.
>> 2418 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2419 # erratum #41
>> 2420 # "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
>> 2421 # #15
>> 2422 # "MIPS R4400PC/SC Errata, Processor Revision 1.0", erratum #7
>> 2423 # "MIPS R4400MC Errata, Processor Revision 1.0", erratum #5
>> 2424 config CPU_DADDI_WORKAROUNDS
>> 2425 bool
728 2426
729 If you don't know what to do here, !! 2427 # Work around certain R4000 CPU errata (as implemented by GCC):
>> 2428 #
>> 2429 # - A double-word or a variable shift may give an incorrect result
>> 2430 # if executed immediately after starting an integer division:
>> 2431 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2432 # erratum #28
>> 2433 # "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum
>> 2434 # #19
>> 2435 #
>> 2436 # - A double-word or a variable shift may give an incorrect result
>> 2437 # if executed while an integer multiplication is in progress:
>> 2438 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2439 # errata #16 & #28
>> 2440 #
>> 2441 # - An integer division may give an incorrect result if started in
>> 2442 # a delay slot of a taken branch or a jump:
>> 2443 # "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0",
>> 2444 # erratum #52
>> 2445 config CPU_R4000_WORKAROUNDS
>> 2446 bool
>> 2447 select CPU_R4400_WORKAROUNDS
730 2448
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 2449 # Work around certain R4400 CPU errata (as implemented by GCC):
732 def_bool y !! 2450 #
733 # https://sourceware.org/git/?p=binuti !! 2451 # - A double-word or a variable shift may give an incorrect result
734 # https://gcc.gnu.org/git/?p=gcc.git;a !! 2452 # if executed immediately after starting an integer division:
735 depends on AS_IS_GNU && AS_VERSION >= !! 2453 # "MIPS R4400MC Errata, Processor Revision 1.0", erratum #10
736 help !! 2454 # "MIPS R4400MC Errata, Processor Revision 2.0 & 3.0", erratum #4
737 Binutils-2.38 and GCC-12.1.0 bumped !! 2455 config CPU_R4400_WORKAROUNDS
738 20191213 version, which moves some i !! 2456 bool
739 the Zicsr and Zifencei extensions. T !! 2457
740 Zicsr and Zifencei when binutils >= !! 2458 config CPU_R4X00_BUGS64
741 and Zifencei are supported in binuti !! 2459 bool
742 To make life easier, and avoid forci !! 2460 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
743 newer ISA spec to version 2.2, relax !! 2461
744 For clang < 17 or GCC < 11.3.0, for !! 2462 config MIPS_ASID_SHIFT
745 special treatment, this is dealt wit !! 2463 int
>> 2464 default 6 if CPU_R3000
>> 2465 default 0
>> 2466
>> 2467 config MIPS_ASID_BITS
>> 2468 int
>> 2469 default 0 if MIPS_ASID_BITS_VARIABLE
>> 2470 default 6 if CPU_R3000
>> 2471 default 8
>> 2472
>> 2473 config MIPS_ASID_BITS_VARIABLE
>> 2474 bool
>> 2475
>> 2476 config MIPS_CRC_SUPPORT
>> 2477 bool
>> 2478
>> 2479 # R4600 erratum. Due to the lack of errata information the exact
>> 2480 # technical details aren't known. I've experimentally found that disabling
>> 2481 # interrupts during indexed I-cache flushes seems to be sufficient to deal
>> 2482 # with the issue.
>> 2483 config WAR_R4600_V1_INDEX_ICACHEOP
>> 2484 bool
>> 2485
>> 2486 # Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata:
>> 2487 #
>> 2488 # 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
>> 2489 # Hit_Invalidate_D and Create_Dirty_Excl_D should only be
>> 2490 # executed if there is no other dcache activity. If the dcache is
>> 2491 # accessed for another instruction immediately preceding when these
>> 2492 # cache instructions are executing, it is possible that the dcache
>> 2493 # tag match outputs used by these cache instructions will be
>> 2494 # incorrect. These cache instructions should be preceded by at least
>> 2495 # four instructions that are not any kind of load or store
>> 2496 # instruction.
>> 2497 #
>> 2498 # This is not allowed: lw
>> 2499 # nop
>> 2500 # nop
>> 2501 # nop
>> 2502 # cache Hit_Writeback_Invalidate_D
>> 2503 #
>> 2504 # This is allowed: lw
>> 2505 # nop
>> 2506 # nop
>> 2507 # nop
>> 2508 # nop
>> 2509 # cache Hit_Writeback_Invalidate_D
>> 2510 config WAR_R4600_V1_HIT_CACHEOP
>> 2511 bool
>> 2512
>> 2513 # Writeback and invalidate the primary cache dcache before DMA.
>> 2514 #
>> 2515 # R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
>> 2516 # Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
>> 2517 # operate correctly if the internal data cache refill buffer is empty. These
>> 2518 # CACHE instructions should be separated from any potential data cache miss
>> 2519 # by a load instruction to an uncached address to empty the response buffer."
>> 2520 # (Revision 2.0 device errata from IDT available on https://www.idt.com/
>> 2521 # in .pdf format.)
>> 2522 config WAR_R4600_V2_HIT_CACHEOP
>> 2523 bool
>> 2524
>> 2525 # From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
>> 2526 # the line which this instruction itself exists, the following
>> 2527 # operation is not guaranteed."
>> 2528 #
>> 2529 # Workaround: do two phase flushing for Index_Invalidate_I
>> 2530 config WAR_TX49XX_ICACHE_INDEX_INV
>> 2531 bool
>> 2532
>> 2533 # The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
>> 2534 # opposes it being called that) where invalid instructions in the same
>> 2535 # I-cache line worth of instructions being fetched may case spurious
>> 2536 # exceptions.
>> 2537 config WAR_ICACHE_REFILLS
>> 2538 bool
>> 2539
>> 2540 # On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
>> 2541 # may cause ll / sc and lld / scd sequences to execute non-atomically.
>> 2542 config WAR_R10000_LLSC
>> 2543 bool
>> 2544
>> 2545 # 34K core erratum: "Problems Executing the TLBR Instruction"
>> 2546 config WAR_MIPS34K_MISSED_ITLB
>> 2547 bool
>> 2548
>> 2549 #
>> 2550 # - Highmem only makes sense for the 32-bit kernel.
>> 2551 # - The current highmem code will only work properly on physically indexed
>> 2552 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2553 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2554 # moment we protect the user and offer the highmem option only on machines
>> 2555 # where it's known to be safe. This will not offer highmem on a few systems
>> 2556 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2557 # indexed CPUs but we're playing safe.
>> 2558 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2559 # know they might have memory configurations that could make use of highmem
>> 2560 # support.
>> 2561 #
>> 2562 config HIGHMEM
>> 2563 bool "High Memory Support"
>> 2564 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
>> 2565 select KMAP_LOCAL
>> 2566
>> 2567 config CPU_SUPPORTS_HIGHMEM
>> 2568 bool
>> 2569
>> 2570 config SYS_SUPPORTS_HIGHMEM
>> 2571 bool
>> 2572
>> 2573 config SYS_SUPPORTS_SMARTMIPS
>> 2574 bool
>> 2575
>> 2576 config SYS_SUPPORTS_MICROMIPS
>> 2577 bool
>> 2578
>> 2579 config SYS_SUPPORTS_MIPS16
>> 2580 bool
>> 2581 help
>> 2582 This option must be set if a kernel might be executed on a MIPS16-
>> 2583 enabled CPU even if MIPS16 is not actually being used. In other
>> 2584 words, it makes the kernel MIPS16-tolerant.
>> 2585
>> 2586 config CPU_SUPPORTS_MSA
>> 2587 bool
746 2588
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 2589 config ARCH_FLATMEM_ENABLE
748 def_bool y 2590 def_bool y
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 2591 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 2592
759 config FPU !! 2593 config ARCH_SPARSEMEM_ENABLE
760 bool "FPU support" !! 2594 bool
761 default y !! 2595
>> 2596 config NUMA
>> 2597 bool "NUMA Support"
>> 2598 depends on SYS_SUPPORTS_NUMA
>> 2599 select SMP
>> 2600 select HAVE_SETUP_PER_CPU_AREA
>> 2601 select NEED_PER_CPU_EMBED_FIRST_CHUNK
>> 2602 help
>> 2603 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 2604 Access). This option improves performance on systems with more
>> 2605 than two nodes; on two node systems it is generally better to
>> 2606 leave it disabled; on single node systems leave this option
>> 2607 disabled.
>> 2608
>> 2609 config SYS_SUPPORTS_NUMA
>> 2610 bool
>> 2611
>> 2612 config HAVE_ARCH_NODEDATA_EXTENSION
>> 2613 bool
>> 2614
>> 2615 config RELOCATABLE
>> 2616 bool "Relocatable kernel"
>> 2617 depends on SYS_SUPPORTS_RELOCATABLE
>> 2618 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
>> 2619 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
>> 2620 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
>> 2621 CPU_P5600 || CAVIUM_OCTEON_SOC || \
>> 2622 CPU_LOONGSON64
>> 2623 help
>> 2624 This builds a kernel image that retains relocation information
>> 2625 so it can be loaded someplace besides the default 1MB.
>> 2626 The relocations make the kernel binary about 15% larger,
>> 2627 but are discarded at runtime
>> 2628
>> 2629 config RELOCATION_TABLE_SIZE
>> 2630 hex "Relocation table size"
>> 2631 depends on RELOCATABLE
>> 2632 range 0x0 0x01000000
>> 2633 default "0x00200000" if CPU_LOONGSON64
>> 2634 default "0x00100000"
>> 2635 help
>> 2636 A table of relocation data will be appended to the kernel binary
>> 2637 and parsed at boot to fix up the relocated kernel.
>> 2638
>> 2639 This option allows the amount of space reserved for the table to be
>> 2640 adjusted, although the default of 1Mb should be ok in most cases.
>> 2641
>> 2642 The build will fail and a valid size suggested if this is too small.
>> 2643
>> 2644 If unsure, leave at the default value.
>> 2645
>> 2646 config RANDOMIZE_BASE
>> 2647 bool "Randomize the address of the kernel image"
>> 2648 depends on RELOCATABLE
762 help 2649 help
763 Say N here if you want to disable al !! 2650 Randomizes the physical and virtual address at which the
764 in the kernel. !! 2651 kernel image is loaded, as a security feature that
>> 2652 deters exploit attempts relying on knowledge of the location
>> 2653 of kernel internals.
765 2654
766 If you don't know what to do here, s !! 2655 Entropy is generated using any coprocessor 0 registers available.
767 2656
768 config IRQ_STACKS !! 2657 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
769 bool "Independent irq & softirq stacks !! 2658
>> 2659 If unsure, say N.
>> 2660
>> 2661 config RANDOMIZE_BASE_MAX_OFFSET
>> 2662 hex "Maximum kASLR offset" if EXPERT
>> 2663 depends on RANDOMIZE_BASE
>> 2664 range 0x0 0x40000000 if EVA || 64BIT
>> 2665 range 0x0 0x08000000
>> 2666 default "0x01000000"
>> 2667 help
>> 2668 When kASLR is active, this provides the maximum offset that will
>> 2669 be applied to the kernel image. It should be set according to the
>> 2670 amount of physical RAM available in the target system minus
>> 2671 PHYSICAL_START and must be a power of 2.
>> 2672
>> 2673 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
>> 2674 EVA or 64-bit. The default is 16Mb.
>> 2675
>> 2676 config NODES_SHIFT
>> 2677 int
>> 2678 default "6"
>> 2679 depends on NUMA
>> 2680
>> 2681 config HW_PERF_EVENTS
>> 2682 bool "Enable hardware performance counter support for perf events"
>> 2683 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_LOONGSON64)
770 default y 2684 default y
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 2685 help
774 Add independent irq & softirq stacks !! 2686 Enable hardware performance counter support for perf events. If
775 overflows. We may save some memory f !! 2687 disabled, perf events will use software events only.
776 2688
777 config THREAD_SIZE_ORDER !! 2689 config DMI
778 int "Kernel stack size (in power-of-tw !! 2690 bool "Enable DMI scanning"
779 range 0 4 !! 2691 depends on MACH_LOONGSON64
780 default 1 if 32BIT !! 2692 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
781 default 2 !! 2693 default y
782 help 2694 help
783 Specify the Pages of thread stack si !! 2695 Enabled scanning of DMI to identify machine quirks. Say Y
784 affects irq stack size, which is equ !! 2696 here unless you have verified that your setup is not
>> 2697 affected by entries in the DMI blacklist. Required by PNP
>> 2698 BIOS code.
785 2699
786 config RISCV_MISALIGNED !! 2700 config SMP
787 bool !! 2701 bool "Multi-Processing support"
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 2702 depends on SYS_SUPPORTS_SMP
789 help 2703 help
790 Embed support for emulating misalign !! 2704 This enables support for systems with more than one CPU. If you have
>> 2705 a system with only one CPU, say N. If you have a system with more
>> 2706 than one CPU, say Y.
>> 2707
>> 2708 If you say N here, the kernel will run on uni- and multiprocessor
>> 2709 machines, but will use only one CPU of a multiprocessor machine. If
>> 2710 you say Y here, the kernel will run on many, but not all,
>> 2711 uniprocessor machines. On a uniprocessor machine, the kernel
>> 2712 will run faster if you say N here.
791 2713
792 choice !! 2714 People using multiprocessor machines who say Y here should also say
793 prompt "Unaligned Accesses Support" !! 2715 Y to "Enhanced Real Time Clock Support", below.
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 2716
>> 2717 See also the SMP-HOWTO available at
>> 2718 <https://www.tldp.org/docs.html#howto>.
>> 2719
>> 2720 If you don't know what to do here, say N.
>> 2721
>> 2722 config HOTPLUG_CPU
>> 2723 bool "Support for hot-pluggable CPUs"
>> 2724 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
795 help 2725 help
796 This determines the level of support !! 2726 Say Y here to allow turning CPUs off and on. CPUs can be
797 information is used by the kernel to !! 2727 controlled through /sys/devices/system/cpu.
798 exposed to user space via the hwprob !! 2728 (Note: power management support will enable this option
799 probed at boot by default. !! 2729 automatically on SMP systems. )
800 !! 2730 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 2731
841 endchoice !! 2732 config SMP_UP
>> 2733 bool
842 2734
843 source "arch/riscv/Kconfig.vendor" !! 2735 config SYS_SUPPORTS_MIPS_CPS
>> 2736 bool
844 2737
845 endmenu # "Platform type" !! 2738 config SYS_SUPPORTS_SMP
>> 2739 bool
846 2740
847 menu "Kernel features" !! 2741 config NR_CPUS_DEFAULT_4
>> 2742 bool
848 2743
849 source "kernel/Kconfig.hz" !! 2744 config NR_CPUS_DEFAULT_8
>> 2745 bool
850 2746
851 config RISCV_SBI_V01 !! 2747 config NR_CPUS_DEFAULT_16
852 bool "SBI v0.1 support" !! 2748 bool
853 depends on RISCV_SBI !! 2749
854 help !! 2750 config NR_CPUS_DEFAULT_32
855 This config allows kernel to use SBI !! 2751 bool
856 deprecated in future once legacy M-m <<
857 2752
858 config RISCV_BOOT_SPINWAIT !! 2753 config NR_CPUS_DEFAULT_64
859 bool "Spinwait booting method" !! 2754 bool
>> 2755
>> 2756 config NR_CPUS
>> 2757 int "Maximum number of CPUs (2-256)"
>> 2758 range 2 256
860 depends on SMP 2759 depends on SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 2760 default "4" if NR_CPUS_DEFAULT_4
>> 2761 default "8" if NR_CPUS_DEFAULT_8
>> 2762 default "16" if NR_CPUS_DEFAULT_16
>> 2763 default "32" if NR_CPUS_DEFAULT_32
>> 2764 default "64" if NR_CPUS_DEFAULT_64
>> 2765 help
>> 2766 This allows you to specify the maximum number of CPUs which this
>> 2767 kernel will support. The maximum supported value is 32 for 32-bit
>> 2768 kernel and 64 for 64-bit kernels; the minimum value which makes
>> 2769 sense is 1 for Qemu (useful only for kernel debugging purposes)
>> 2770 and 2 for all others.
>> 2771
>> 2772 This is purely to save memory - each supported CPU adds
>> 2773 approximately eight kilobytes to the kernel image. For best
>> 2774 performance should round up your number of processors to the next
>> 2775 power of two.
>> 2776
>> 2777 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2778 bool
>> 2779
>> 2780 config MIPS_NR_CPU_NR_MAP_1024
>> 2781 bool
>> 2782
>> 2783 config MIPS_NR_CPU_NR_MAP
>> 2784 int
>> 2785 depends on SMP
>> 2786 default 1024 if MIPS_NR_CPU_NR_MAP_1024
>> 2787 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
>> 2788
>> 2789 #
>> 2790 # Timer Interrupt Frequency Configuration
>> 2791 #
>> 2792
>> 2793 choice
>> 2794 prompt "Timer frequency"
>> 2795 default HZ_250
862 help 2796 help
863 This enables support for booting Lin !! 2797 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 2798
876 If unsure what to do here, say N. !! 2799 config HZ_24
>> 2800 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
877 2801
878 config ARCH_SUPPORTS_KEXEC !! 2802 config HZ_48
879 def_bool y !! 2803 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
880 2804
881 config ARCH_SELECTS_KEXEC !! 2805 config HZ_100
882 def_bool y !! 2806 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 2807
886 config ARCH_SUPPORTS_KEXEC_FILE !! 2808 config HZ_128
887 def_bool 64BIT !! 2809 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
888 2810
889 config ARCH_SELECTS_KEXEC_FILE !! 2811 config HZ_250
890 def_bool y !! 2812 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
891 depends on KEXEC_FILE !! 2813
892 select HAVE_IMA_KEXEC if IMA !! 2814 config HZ_256
893 select KEXEC_ELF !! 2815 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
>> 2816
>> 2817 config HZ_1000
>> 2818 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
>> 2819
>> 2820 config HZ_1024
>> 2821 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
894 2822
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 2823 endchoice
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 2824
>> 2825 config SYS_SUPPORTS_24HZ
>> 2826 bool
>> 2827
>> 2828 config SYS_SUPPORTS_48HZ
>> 2829 bool
>> 2830
>> 2831 config SYS_SUPPORTS_100HZ
>> 2832 bool
>> 2833
>> 2834 config SYS_SUPPORTS_128HZ
>> 2835 bool
>> 2836
>> 2837 config SYS_SUPPORTS_250HZ
>> 2838 bool
>> 2839
>> 2840 config SYS_SUPPORTS_256HZ
>> 2841 bool
>> 2842
>> 2843 config SYS_SUPPORTS_1000HZ
>> 2844 bool
>> 2845
>> 2846 config SYS_SUPPORTS_1024HZ
>> 2847 bool
>> 2848
>> 2849 config SYS_SUPPORTS_ARBIT_HZ
>> 2850 bool
>> 2851 default y if !SYS_SUPPORTS_24HZ && \
>> 2852 !SYS_SUPPORTS_48HZ && \
>> 2853 !SYS_SUPPORTS_100HZ && \
>> 2854 !SYS_SUPPORTS_128HZ && \
>> 2855 !SYS_SUPPORTS_250HZ && \
>> 2856 !SYS_SUPPORTS_256HZ && \
>> 2857 !SYS_SUPPORTS_1000HZ && \
>> 2858 !SYS_SUPPORTS_1024HZ
>> 2859
>> 2860 config HZ
>> 2861 int
>> 2862 default 24 if HZ_24
>> 2863 default 48 if HZ_48
>> 2864 default 100 if HZ_100
>> 2865 default 128 if HZ_128
>> 2866 default 250 if HZ_250
>> 2867 default 256 if HZ_256
>> 2868 default 1000 if HZ_1000
>> 2869 default 1024 if HZ_1024
>> 2870
>> 2871 config SCHED_HRTICK
>> 2872 def_bool HIGH_RES_TIMERS
>> 2873
>> 2874 config ARCH_SUPPORTS_KEXEC
>> 2875 def_bool y
897 2876
898 config ARCH_SUPPORTS_CRASH_DUMP 2877 config ARCH_SUPPORTS_CRASH_DUMP
899 def_bool y 2878 def_bool y
900 2879
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 2880 config PHYSICAL_START
902 def_bool CRASH_RESERVE !! 2881 hex "Physical address where the kernel is loaded"
>> 2882 default "0xffffffff84000000"
>> 2883 depends on CRASH_DUMP
>> 2884 help
>> 2885 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
>> 2886 If you plan to use kernel for capturing the crash dump change
>> 2887 this value to start of the reserved region (the "X" value as
>> 2888 specified in the "crashkernel=YM@XM" command line boot parameter
>> 2889 passed to the panic-ed kernel).
>> 2890
>> 2891 config MIPS_O32_FP64_SUPPORT
>> 2892 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
>> 2893 depends on 32BIT || MIPS32_O32
>> 2894 help
>> 2895 When this is enabled, the kernel will support use of 64-bit floating
>> 2896 point registers with binaries using the O32 ABI along with the
>> 2897 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
>> 2898 32-bit MIPS systems this support is at the cost of increasing the
>> 2899 size and complexity of the compiled FPU emulator. Thus if you are
>> 2900 running a MIPS32 system and know that none of your userland binaries
>> 2901 will require 64-bit floating point, you may wish to reduce the size
>> 2902 of your kernel & potentially improve FP emulation performance by
>> 2903 saying N here.
>> 2904
>> 2905 Although binutils currently supports use of this flag the details
>> 2906 concerning its effect upon the O32 ABI in userland are still being
>> 2907 worked on. In order to avoid userland becoming dependent upon current
>> 2908 behaviour before the details have been finalised, this option should
>> 2909 be considered experimental and only enabled by those working upon
>> 2910 said details.
903 2911
904 config COMPAT !! 2912 If unsure, say N.
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 2913
933 If in doubt, say N here. !! 2914 config USE_OF
>> 2915 bool
>> 2916 select OF
>> 2917 select OF_EARLY_FLATTREE
>> 2918 select IRQ_DOMAIN
934 2919
935 config RELOCATABLE !! 2920 config UHI_BOOT
936 bool "Build a relocatable kernel" !! 2921 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 2922
948 If unsure, say N. !! 2923 config BUILTIN_DTB
>> 2924 bool
949 2925
950 config RANDOMIZE_BASE !! 2926 choice
951 bool "Randomize the address of the ker !! 2927 prompt "Kernel appended dtb support" if USE_OF
952 select RELOCATABLE !! 2928 default MIPS_NO_APPENDED_DTB
953 depends on MMU && 64BIT && !XIP_KERNEL <<
954 help <<
955 Randomizes the virtual address at wh <<
956 loaded, as a security feature that d <<
957 relying on knowledge of the location <<
958 <<
959 It is the bootloader's job to provid <<
960 random u64 value in /chosen/kaslr-se <<
961 <<
962 When booting via the UEFI stub, it w <<
963 EFI_RNG_PROTOCOL implementation (if <<
964 to the kernel proper. In addition, i <<
965 location of the kernel Image as well <<
966 <<
967 If unsure, say N. <<
968 <<
969 endmenu # "Kernel features" <<
970 <<
971 menu "Boot options" <<
972 <<
973 config CMDLINE <<
974 string "Built-in kernel command line" <<
975 help <<
976 For most platforms, the arguments fo <<
977 are provided at run-time, during boo <<
978 where either no arguments are being <<
979 arguments are insufficient or even i <<
980 2929
981 When that occurs, it is possible to !! 2930 config MIPS_NO_APPENDED_DTB
982 line here and choose how the kernel !! 2931 bool "None"
>> 2932 help
>> 2933 Do not enable appended dtb support.
>> 2934
>> 2935 config MIPS_ELF_APPENDED_DTB
>> 2936 bool "vmlinux"
>> 2937 help
>> 2938 With this option, the boot code will look for a device tree binary
>> 2939 DTB) included in the vmlinux ELF section .appended_dtb. By default
>> 2940 it is empty and the DTB can be appended using binutils command
>> 2941 objcopy:
>> 2942
>> 2943 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
>> 2944
>> 2945 This is meant as a backward compatibility convenience for those
>> 2946 systems with a bootloader that can't be upgraded to accommodate
>> 2947 the documented boot protocol using a device tree.
>> 2948
>> 2949 config MIPS_RAW_APPENDED_DTB
>> 2950 bool "vmlinux.bin or vmlinuz.bin"
>> 2951 help
>> 2952 With this option, the boot code will look for a device tree binary
>> 2953 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
>> 2954 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
>> 2955
>> 2956 This is meant as a backward compatibility convenience for those
>> 2957 systems with a bootloader that can't be upgraded to accommodate
>> 2958 the documented boot protocol using a device tree.
>> 2959
>> 2960 Beware that there is very little in terms of protection against
>> 2961 this option being confused by leftover garbage in memory that might
>> 2962 look like a DTB header after a reboot if no actual DTB is appended
>> 2963 to vmlinux.bin. Do not leave this option active in a production kernel
>> 2964 if you don't intend to always append a DTB.
>> 2965 endchoice
983 2966
984 choice 2967 choice
985 prompt "Built-in command line usage" !! 2968 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
986 depends on CMDLINE != "" !! 2969 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
987 default CMDLINE_FALLBACK !! 2970 !MACH_LOONGSON64 && !MIPS_MALTA && \
988 help !! 2971 !CAVIUM_OCTEON_SOC
989 Choose how the kernel will handle th !! 2972 default MIPS_CMDLINE_FROM_BOOTLOADER
990 line. !! 2973
991 !! 2974 config MIPS_CMDLINE_FROM_DTB
992 config CMDLINE_FALLBACK !! 2975 depends on USE_OF
993 bool "Use bootloader kernel arguments !! 2976 bool "Dtb kernel arguments if available"
994 help !! 2977
995 Use the built-in command line as fal !! 2978 config MIPS_CMDLINE_DTB_EXTEND
996 during boot. This is the default beh !! 2979 depends on USE_OF
997 !! 2980 bool "Extend dtb kernel arguments with bootloader arguments"
998 config CMDLINE_EXTEND !! 2981
999 bool "Extend bootloader kernel argumen !! 2982 config MIPS_CMDLINE_FROM_BOOTLOADER
1000 help !! 2983 bool "Bootloader kernel arguments if available"
1001 The command-line arguments provided !! 2984
1002 appended to the built-in command li !! 2985 config MIPS_CMDLINE_BUILTIN_EXTEND
1003 cases where the provided arguments !! 2986 depends on CMDLINE_BOOL
1004 you don't want to or cannot modify !! 2987 bool "Extend builtin kernel arguments with bootloader arguments"
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 <<
1014 endchoice 2988 endchoice
1015 2989
1016 config EFI_STUB !! 2990 endmenu
1017 bool <<
1018 2991
1019 config EFI !! 2992 config LOCKDEP_SUPPORT
1020 bool "UEFI runtime support" !! 2993 bool
1021 depends on OF && !XIP_KERNEL <<
1022 depends on MMU <<
1023 default y 2994 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 2995
1039 config DMI !! 2996 config STACKTRACE_SUPPORT
1040 bool "Enable support for SMBIOS (DMI) !! 2997 bool
1041 depends on EFI <<
1042 default y 2998 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
1045 2999
1046 This option is only useful on syste !! 3000 config PGTABLE_LEVELS
1047 However, even with this option, the !! 3001 int
1048 continue to boot on existing non-UE !! 3002 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
>> 3003 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
>> 3004 default 2
1049 3005
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 3006 config MIPS_AUTO_PFN_OFFSET
1051 def_bool $(cc-option,-mstack-protecto !! 3007 bool
1052 3008
1053 config STACKPROTECTOR_PER_TASK !! 3009 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 3010
1058 config PHYS_RAM_BASE_FIXED !! 3011 config PCI_DRIVERS_GENERIC
1059 bool "Explicitly specified physical R !! 3012 select PCI_DOMAINS_GENERIC if PCI
1060 depends on NONPORTABLE !! 3013 bool
1061 default n <<
1062 3014
1063 config PHYS_RAM_BASE !! 3015 config PCI_DRIVERS_LEGACY
1064 hex "Platform Physical RAM address" !! 3016 def_bool !PCI_DRIVERS_GENERIC
1065 depends on PHYS_RAM_BASE_FIXED !! 3017 select NO_GENERIC_PCI_IOPORT_MAP
1066 default "0x80000000" !! 3018 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 3019
1099 If unsure, say N. !! 3020 #
>> 3021 # ISA support is now enabled via select. Too many systems still have the one
>> 3022 # or other ISA chip on the board that users don't know about so don't expect
>> 3023 # users to choose the right thing ...
>> 3024 #
>> 3025 config ISA
>> 3026 bool
1100 3027
1101 config XIP_PHYS_ADDR !! 3028 config TC
1102 hex "XIP Kernel Physical Location" !! 3029 bool "TURBOchannel support"
1103 depends on XIP_KERNEL !! 3030 depends on MACH_DECSTATION
1104 default "0x21000000" !! 3031 help
1105 help !! 3032 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1106 This is the physical address in you !! 3033 processors. TURBOchannel programming specifications are available
1107 be linked for and stored to. This !! 3034 at:
1108 own flash usage. !! 3035 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 3036 and:
>> 3037 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 3038 Linux driver support status is documented at:
>> 3039 <http://www.linux-mips.org/wiki/DECstation>
1109 3040
1110 config RISCV_ISA_FALLBACK !! 3041 config MMU
1111 bool "Permit falling back to parsing !! 3042 bool
1112 default y 3043 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 3044
1128 config BUILTIN_DTB !! 3045 config ARCH_MMAP_RND_BITS_MIN
1129 bool "Built-in device tree" !! 3046 default 12 if 64BIT
1130 depends on OF && NONPORTABLE !! 3047 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 3048
>> 3049 config ARCH_MMAP_RND_BITS_MAX
>> 3050 default 18 if 64BIT
>> 3051 default 15
1136 3052
1137 config BUILTIN_DTB_SOURCE !! 3053 config ARCH_MMAP_RND_COMPAT_BITS_MIN
1138 string "Built-in device tree source" !! 3054 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 3055
1145 endmenu # "Boot options" !! 3056 config ARCH_MMAP_RND_COMPAT_BITS_MAX
>> 3057 default 15
1146 3058
1147 config PORTABLE !! 3059 config I8253
>> 3060 bool
>> 3061 select CLKSRC_I8253
>> 3062 select CLKEVT_I8253
>> 3063 select MIPS_EXTERNAL_TIMER
>> 3064 endmenu
>> 3065
>> 3066 config TRAD_SIGNALS
>> 3067 bool
>> 3068
>> 3069 config MIPS32_COMPAT
1148 bool 3070 bool
1149 default !NONPORTABLE <<
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 3071
1154 config ARCH_PROC_KCORE_TEXT !! 3072 config COMPAT
>> 3073 bool
>> 3074
>> 3075 config MIPS32_O32
>> 3076 bool "Kernel support for o32 binaries"
>> 3077 depends on 64BIT
>> 3078 select ARCH_WANT_OLD_COMPAT_IPC
>> 3079 select COMPAT
>> 3080 select MIPS32_COMPAT
>> 3081 help
>> 3082 Select this option if you want to run o32 binaries. These are pure
>> 3083 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 3084 existing binaries are in this format.
>> 3085
>> 3086 If unsure, say Y.
>> 3087
>> 3088 config MIPS32_N32
>> 3089 bool "Kernel support for n32 binaries"
>> 3090 depends on 64BIT
>> 3091 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>> 3092 select COMPAT
>> 3093 select MIPS32_COMPAT
>> 3094 help
>> 3095 Select this option if you want to run n32 binaries. These are
>> 3096 64-bit binaries using 32-bit quantities for addressing and certain
>> 3097 data that would normally be 64-bit. They are used in special
>> 3098 cases.
>> 3099
>> 3100 If unsure, say N.
>> 3101
>> 3102 config CC_HAS_MNO_BRANCH_LIKELY
1155 def_bool y 3103 def_bool y
>> 3104 depends on $(cc-option,-mno-branch-likely)
1156 3105
1157 menu "Power management options" !! 3106 # https://github.com/llvm/llvm-project/issues/61045
>> 3107 config CC_HAS_BROKEN_INLINE_COMPAT_BRANCH
>> 3108 def_bool y if CC_IS_CLANG
1158 3109
1159 source "kernel/power/Kconfig" !! 3110 menu "Power management options"
1160 3111
1161 config ARCH_HIBERNATION_POSSIBLE 3112 config ARCH_HIBERNATION_POSSIBLE
1162 def_bool y 3113 def_bool y
1163 !! 3114 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 3115
1167 config ARCH_SUSPEND_POSSIBLE 3116 config ARCH_SUSPEND_POSSIBLE
1168 def_bool y 3117 def_bool y
>> 3118 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1169 3119
1170 endmenu # "Power management options" !! 3120 source "kernel/power/Kconfig"
1171 3121
1172 menu "CPU Power Management" !! 3122 endmenu
1173 3123
1174 source "drivers/cpuidle/Kconfig" !! 3124 config MIPS_EXTERNAL_TIMER
>> 3125 bool
>> 3126
>> 3127 menu "CPU Power Management"
1175 3128
>> 3129 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
1176 source "drivers/cpufreq/Kconfig" 3130 source "drivers/cpufreq/Kconfig"
>> 3131 endif # CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
>> 3132
>> 3133 source "drivers/cpuidle/Kconfig"
1177 3134
1178 endmenu # "CPU Power Management" !! 3135 endmenu
1179 3136
1180 source "arch/riscv/kvm/Kconfig" !! 3137 source "arch/mips/kvm/Kconfig"
1181 3138
1182 source "drivers/acpi/Kconfig" !! 3139 source "arch/mips/vdso/Kconfig"
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