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 3 bool
9 !! 4 default y
10 config 32BIT !! 5 select ARCH_BINFMT_ELF_STATE
11 bool !! 6 select ARCH_CLOCKSOURCE_DATA
12 !! 7 select ARCH_HAS_CPU_FINALIZE_INIT
13 config RISCV !! 8 select ARCH_DISCARD_MEMBLOCK
14 def_bool y !! 9 select ARCH_HAS_ELF_RANDOMIZE
15 select ACPI_GENERIC_GSI if ACPI <<
16 select ACPI_MCFG if (ACPI && PCI) <<
17 select ACPI_PPTT if ACPI <<
18 select ACPI_REDUCED_HARDWARE_ONLY if A <<
19 select ACPI_SPCR_TABLE if ACPI <<
20 select ARCH_DMA_DEFAULT_COHERENT <<
21 select ARCH_ENABLE_HUGEPAGE_MIGRATION <<
22 select ARCH_ENABLE_MEMORY_HOTPLUG if S <<
23 select ARCH_ENABLE_MEMORY_HOTREMOVE if <<
24 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if <<
25 select ARCH_ENABLE_THP_MIGRATION if TR <<
26 select ARCH_HAS_BINFMT_FLAT <<
27 select ARCH_HAS_CURRENT_STACK_POINTER <<
28 select ARCH_HAS_DEBUG_VIRTUAL if MMU <<
29 select ARCH_HAS_DEBUG_VM_PGTABLE <<
30 select ARCH_HAS_DEBUG_WX <<
31 select ARCH_HAS_FAST_MULTIPLIER <<
32 select ARCH_HAS_FORTIFY_SOURCE <<
33 select ARCH_HAS_GCOV_PROFILE_ALL <<
34 select ARCH_HAS_GIGANTIC_PAGE <<
35 select ARCH_HAS_KCOV <<
36 select ARCH_HAS_KERNEL_FPU_SUPPORT if <<
37 select ARCH_HAS_MEMBARRIER_CALLBACKS <<
38 select ARCH_HAS_MEMBARRIER_SYNC_CORE <<
39 select ARCH_HAS_MMIOWB <<
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 10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
52 select ARCH_HAS_UBSAN !! 11 select ARCH_SUPPORTS_UPROBES
53 select ARCH_HAS_VDSO_DATA !! 12 select ARCH_USE_BUILTIN_BSWAP
54 select ARCH_KEEP_MEMBLOCK if ACPI <<
55 select ARCH_MHP_MEMMAP_ON_MEMORY_ENABL <<
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 13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
71 select ARCH_USE_MEMTEST <<
72 select ARCH_USE_QUEUED_RWLOCKS 14 select ARCH_USE_QUEUED_RWLOCKS
73 select ARCH_USE_SYM_ANNOTATIONS !! 15 select ARCH_USE_QUEUED_SPINLOCKS
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN !! 16 select ARCH_WANT_IPC_PARSE_VERSION
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU !! 17 select BUILDTIME_EXTABLE_SORT
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ <<
77 select ARCH_WANT_FRAME_POINTERS <<
78 select ARCH_WANT_GENERAL_HUGETLB if !R <<
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B <<
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 18 select CLONE_BACKWARDS
89 select COMMON_CLK !! 19 select CPU_PM if CPU_IDLE
90 select CPU_PM if CPU_IDLE || HIBERNATI !! 20 select DMA_DIRECT_OPS
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 21 select GENERIC_ATOMIC64 if !64BIT
96 select GENERIC_CLOCKEVENTS_BROADCAST i !! 22 select GENERIC_CLOCKEVENTS
97 select GENERIC_CPU_DEVICES !! 23 select GENERIC_CMOS_UPDATE
98 select GENERIC_CPU_VULNERABILITIES !! 24 select GENERIC_CPU_AUTOPROBE
99 select GENERIC_EARLY_IOREMAP !! 25 select GENERIC_IRQ_PROBE
100 select GENERIC_ENTRY <<
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 26 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL !! 27 select GENERIC_LIB_ASHLDI3
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED !! 28 select GENERIC_LIB_ASHRDI3
>> 29 select GENERIC_LIB_CMPDI2
>> 30 select GENERIC_LIB_LSHRDI3
>> 31 select GENERIC_LIB_UCMPDI2
110 select GENERIC_PCI_IOMAP 32 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 33 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
112 select GENERIC_SCHED_CLOCK <<
113 select GENERIC_SMP_IDLE_THREAD 34 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 35 select GENERIC_TIME_VSYSCALL
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 36 select HANDLE_DOMAIN_IRQ
116 select HARDIRQS_SW_RESEND !! 37 select HAVE_ARCH_COMPILER_H
117 select HAS_IOPORT if MMU !! 38 select HAVE_ARCH_JUMP_LABEL
118 select HAVE_ARCH_AUDITSYSCALL !! 39 select HAVE_ARCH_KGDB
119 select HAVE_ARCH_HUGE_VMALLOC if HAVE_ <<
120 select HAVE_ARCH_HUGE_VMAP if MMU && 6 <<
121 select HAVE_ARCH_JUMP_LABEL if !XIP_KE <<
122 select HAVE_ARCH_JUMP_LABEL_RELATIVE i <<
123 select HAVE_ARCH_KASAN if MMU && 64BIT <<
124 select HAVE_ARCH_KASAN_VMALLOC if MMU <<
125 select HAVE_ARCH_KFENCE if MMU && 64BI <<
126 select HAVE_ARCH_KGDB if !XIP_KERNEL <<
127 select HAVE_ARCH_KGDB_QXFER_PKT <<
128 select HAVE_ARCH_MMAP_RND_BITS if MMU 40 select HAVE_ARCH_MMAP_RND_BITS if MMU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 41 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER 42 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK 43 select HAVE_ARCH_TRACEHOOK
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 44 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 45 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 46 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
138 select HAVE_ASM_MODVERSIONS !! 47 select HAVE_CONTEXT_TRACKING
139 select HAVE_CONTEXT_TRACKING_USER !! 48 select HAVE_COPY_THREAD_TLS
>> 49 select HAVE_C_RECORDMCOUNT
140 select HAVE_DEBUG_KMEMLEAK 50 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS if MMU !! 51 select HAVE_DEBUG_STACKOVERFLOW
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER !! 52 select HAVE_DMA_CONTIGUOUS
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT !! 53 select HAVE_DYNAMIC_FTRACE
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i !! 54 select HAVE_EXIT_THREAD
145 select HAVE_FTRACE_MCOUNT_RECORD if !X !! 55 select HAVE_FTRACE_MCOUNT_RECORD
146 select HAVE_FUNCTION_GRAPH_TRACER 56 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 57 select HAVE_FUNCTION_TRACER
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 58 select HAVE_GENERIC_DMA_COHERENT
149 select HAVE_EBPF_JIT if MMU !! 59 select HAVE_IDE
150 select HAVE_GUP_FAST if MMU !! 60 select HAVE_IRQ_EXIT_ON_IRQ_STACK
151 select HAVE_FUNCTION_ARG_ACCESS_API <<
152 select HAVE_FUNCTION_ERROR_INJECTION <<
153 select HAVE_GCC_PLUGINS <<
154 select HAVE_GENERIC_VDSO if MMU && 64B <<
155 select HAVE_IRQ_TIME_ACCOUNTING 61 select HAVE_IRQ_TIME_ACCOUNTING
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE !! 62 select HAVE_KPROBES
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL !! 63 select HAVE_KRETPROBES
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL !! 64 select HAVE_MEMBLOCK
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL !! 65 select HAVE_MEMBLOCK_NODE_MAP
160 select HAVE_KERNEL_LZO if !XIP_KERNEL !! 66 select HAVE_MOD_ARCH_SPECIFIC
161 select HAVE_KERNEL_UNCOMPRESSED if !XI !! 67 select HAVE_NMI
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL !! 68 select HAVE_OPROFILE
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & <<
164 select HAVE_KPROBES if !XIP_KERNEL <<
165 select HAVE_KRETPROBES if !XIP_KERNEL <<
166 # https://github.com/ClangBuiltLinux/l <<
167 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
168 select HAVE_MOVE_PMD <<
169 select HAVE_MOVE_PUD <<
170 select HAVE_PAGE_SIZE_4KB <<
171 select HAVE_PCI <<
172 select HAVE_PERF_EVENTS 69 select HAVE_PERF_EVENTS
173 select HAVE_PERF_REGS <<
174 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 70 select HAVE_REGS_AND_STACK_ACCESS_API
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 select HAVE_RSEQ 71 select HAVE_RSEQ
180 select HAVE_RUST if RUSTC_SUPPORTS_RIS <<
181 select HAVE_SAMPLE_FTRACE_DIRECT <<
182 select HAVE_SAMPLE_FTRACE_DIRECT_MULTI <<
183 select HAVE_STACKPROTECTOR 72 select HAVE_STACKPROTECTOR
184 select HAVE_SYSCALL_TRACEPOINTS 73 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 74 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
186 select IRQ_DOMAIN <<
187 select IRQ_FORCED_THREADING 75 select IRQ_FORCED_THREADING
188 select KASAN_VMALLOC if KASAN !! 76 select MODULES_USE_ELF_RELA if MODULES && 64BIT
189 select LOCK_MM_AND_FIND_VMA !! 77 select MODULES_USE_ELF_REL if MODULES
190 select MMU_GATHER_RCU_TABLE_FREE if SM !! 78 select PERF_USE_VMALLOC
191 select MODULES_USE_ELF_RELA if MODULES !! 79 select RTC_LIB if !MACH_LOONGSON64
192 select OF <<
193 select OF_EARLY_FLATTREE <<
194 select OF_IRQ <<
195 select PCI_DOMAINS_GENERIC if PCI <<
196 select PCI_ECAM if (ACPI && PCI) <<
197 select PCI_MSI if PCI <<
198 select RISCV_ALTERNATIVE if !XIP_KERNE <<
199 select RISCV_APLIC <<
200 select RISCV_IMSIC <<
201 select RISCV_INTC <<
202 select RISCV_TIMER if RISCV_SBI <<
203 select SIFIVE_PLIC <<
204 select SPARSE_IRQ <<
205 select SYSCTL_EXCEPTION_TRACE 80 select SYSCTL_EXCEPTION_TRACE
206 select THREAD_INFO_IN_TASK !! 81 select VIRT_TO_BUS
207 select TRACE_IRQFLAGS_SUPPORT !! 82
208 select UACCESS_MEMCPY if !MMU !! 83 menu "Machine selection"
209 select USER_STACKTRACE_SUPPORT !! 84
>> 85 choice
>> 86 prompt "System type"
>> 87 default MIPS_GENERIC
>> 88
>> 89 config MIPS_GENERIC
>> 90 bool "Generic board-agnostic MIPS kernel"
>> 91 select BOOT_RAW
>> 92 select BUILTIN_DTB
>> 93 select CEVT_R4K
>> 94 select CLKSRC_MIPS_GIC
>> 95 select COMMON_CLK
>> 96 select CPU_MIPSR2_IRQ_VI
>> 97 select CPU_MIPSR2_IRQ_EI
>> 98 select CSRC_R4K
>> 99 select DMA_PERDEV_COHERENT
>> 100 select HW_HAS_PCI
>> 101 select IRQ_MIPS_CPU
>> 102 select LIBFDT
>> 103 select MIPS_AUTO_PFN_OFFSET
>> 104 select MIPS_CPU_SCACHE
>> 105 select MIPS_GIC
>> 106 select MIPS_L1_CACHE_SHIFT_7
>> 107 select NO_EXCEPT_FILL
>> 108 select PCI_DRIVERS_GENERIC
>> 109 select PINCTRL
>> 110 select SMP_UP if SMP
>> 111 select SWAP_IO_SPACE
>> 112 select SYS_HAS_CPU_MIPS32_R1
>> 113 select SYS_HAS_CPU_MIPS32_R2
>> 114 select SYS_HAS_CPU_MIPS32_R6
>> 115 select SYS_HAS_CPU_MIPS64_R1
>> 116 select SYS_HAS_CPU_MIPS64_R2
>> 117 select SYS_HAS_CPU_MIPS64_R6
>> 118 select SYS_SUPPORTS_32BIT_KERNEL
>> 119 select SYS_SUPPORTS_64BIT_KERNEL
>> 120 select SYS_SUPPORTS_BIG_ENDIAN
>> 121 select SYS_SUPPORTS_HIGHMEM
>> 122 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 123 select SYS_SUPPORTS_MICROMIPS
>> 124 select SYS_SUPPORTS_MIPS_CPS
>> 125 select SYS_SUPPORTS_MIPS16
>> 126 select SYS_SUPPORTS_MULTITHREADING
>> 127 select SYS_SUPPORTS_RELOCATABLE
>> 128 select SYS_SUPPORTS_SMARTMIPS
>> 129 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 130 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 131 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 132 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 133 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 134 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 135 select USE_OF
>> 136 help
>> 137 Select this to build a kernel which aims to support multiple boards,
>> 138 generally using a flattened device tree passed from the bootloader
>> 139 using the boot protocol defined in the UHI (Unified Hosting
>> 140 Interface) specification.
>> 141
>> 142 config MIPS_ALCHEMY
>> 143 bool "Alchemy processor based machines"
>> 144 select PHYS_ADDR_T_64BIT
>> 145 select CEVT_R4K
>> 146 select CSRC_R4K
>> 147 select IRQ_MIPS_CPU
>> 148 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
>> 149 select SYS_HAS_CPU_MIPS32_R1
>> 150 select SYS_SUPPORTS_32BIT_KERNEL
>> 151 select SYS_SUPPORTS_APM_EMULATION
>> 152 select GPIOLIB
>> 153 select SYS_SUPPORTS_ZBOOT
>> 154 select COMMON_CLK
>> 155
>> 156 config AR7
>> 157 bool "Texas Instruments AR7"
>> 158 select BOOT_ELF32
>> 159 select DMA_NONCOHERENT
>> 160 select CEVT_R4K
>> 161 select CSRC_R4K
>> 162 select IRQ_MIPS_CPU
>> 163 select NO_EXCEPT_FILL
>> 164 select SWAP_IO_SPACE
>> 165 select SYS_HAS_CPU_MIPS32_R1
>> 166 select SYS_HAS_EARLY_PRINTK
>> 167 select SYS_SUPPORTS_32BIT_KERNEL
>> 168 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 169 select SYS_SUPPORTS_MIPS16
>> 170 select SYS_SUPPORTS_ZBOOT_UART16550
>> 171 select GPIOLIB
>> 172 select VLYNQ
>> 173 select HAVE_CLK
>> 174 help
>> 175 Support for the Texas Instruments AR7 System-on-a-Chip
>> 176 family: TNETD7100, 7200 and 7300.
>> 177
>> 178 config ATH25
>> 179 bool "Atheros AR231x/AR531x SoC support"
>> 180 select CEVT_R4K
>> 181 select CSRC_R4K
>> 182 select DMA_NONCOHERENT
>> 183 select IRQ_MIPS_CPU
>> 184 select IRQ_DOMAIN
>> 185 select SYS_HAS_CPU_MIPS32_R1
>> 186 select SYS_SUPPORTS_BIG_ENDIAN
>> 187 select SYS_SUPPORTS_32BIT_KERNEL
>> 188 select SYS_HAS_EARLY_PRINTK
>> 189 help
>> 190 Support for Atheros AR231x and Atheros AR531x based boards
>> 191
>> 192 config ATH79
>> 193 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 194 select ARCH_HAS_RESET_CONTROLLER
>> 195 select BOOT_RAW
>> 196 select CEVT_R4K
>> 197 select CSRC_R4K
>> 198 select DMA_NONCOHERENT
>> 199 select GPIOLIB
>> 200 select PINCTRL
>> 201 select HAVE_CLK
>> 202 select COMMON_CLK
>> 203 select CLKDEV_LOOKUP
>> 204 select IRQ_MIPS_CPU
>> 205 select MIPS_MACHINE
>> 206 select SYS_HAS_CPU_MIPS32_R2
>> 207 select SYS_HAS_EARLY_PRINTK
>> 208 select SYS_SUPPORTS_32BIT_KERNEL
>> 209 select SYS_SUPPORTS_BIG_ENDIAN
>> 210 select SYS_SUPPORTS_MIPS16
>> 211 select SYS_SUPPORTS_ZBOOT_UART_PROM
>> 212 select USE_OF
>> 213 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
>> 214 help
>> 215 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 216
>> 217 config BMIPS_GENERIC
>> 218 bool "Broadcom Generic BMIPS kernel"
>> 219 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
>> 220 select ARCH_HAS_PHYS_TO_DMA
>> 221 select BOOT_RAW
>> 222 select NO_EXCEPT_FILL
>> 223 select USE_OF
>> 224 select CEVT_R4K
>> 225 select CSRC_R4K
>> 226 select SYNC_R4K
>> 227 select COMMON_CLK
>> 228 select BCM6345_L1_IRQ
>> 229 select BCM7038_L1_IRQ
>> 230 select BCM7120_L2_IRQ
>> 231 select BRCMSTB_L2_IRQ
>> 232 select IRQ_MIPS_CPU
>> 233 select DMA_NONCOHERENT
>> 234 select SYS_SUPPORTS_32BIT_KERNEL
>> 235 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 236 select SYS_SUPPORTS_BIG_ENDIAN
>> 237 select SYS_SUPPORTS_HIGHMEM
>> 238 select SYS_HAS_CPU_BMIPS32_3300
>> 239 select SYS_HAS_CPU_BMIPS4350
>> 240 select SYS_HAS_CPU_BMIPS4380
>> 241 select SYS_HAS_CPU_BMIPS5000
>> 242 select SWAP_IO_SPACE
>> 243 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 244 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 245 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 246 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 247 select HARDIRQS_SW_RESEND
>> 248 help
>> 249 Build a generic DT-based kernel image that boots on select
>> 250 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
>> 251 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
>> 252 must be set appropriately for your board.
>> 253
>> 254 config BCM47XX
>> 255 bool "Broadcom BCM47XX based boards"
>> 256 select BOOT_RAW
>> 257 select CEVT_R4K
>> 258 select CSRC_R4K
>> 259 select DMA_NONCOHERENT
>> 260 select HW_HAS_PCI
>> 261 select IRQ_MIPS_CPU
>> 262 select SYS_HAS_CPU_MIPS32_R1
>> 263 select NO_EXCEPT_FILL
>> 264 select SYS_SUPPORTS_32BIT_KERNEL
>> 265 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 266 select SYS_SUPPORTS_MIPS16
>> 267 select SYS_SUPPORTS_ZBOOT
>> 268 select SYS_HAS_EARLY_PRINTK
>> 269 select USE_GENERIC_EARLY_PRINTK_8250
>> 270 select GPIOLIB
>> 271 select LEDS_GPIO_REGISTER
>> 272 select BCM47XX_NVRAM
>> 273 select BCM47XX_SPROM
>> 274 select BCM47XX_SSB if !BCM47XX_BCMA
>> 275 help
>> 276 Support for BCM47XX based boards
>> 277
>> 278 config BCM63XX
>> 279 bool "Broadcom BCM63XX based boards"
>> 280 select BOOT_RAW
>> 281 select CEVT_R4K
>> 282 select CSRC_R4K
>> 283 select SYNC_R4K
>> 284 select DMA_NONCOHERENT
>> 285 select IRQ_MIPS_CPU
>> 286 select SYS_SUPPORTS_32BIT_KERNEL
>> 287 select SYS_SUPPORTS_BIG_ENDIAN
>> 288 select SYS_HAS_EARLY_PRINTK
>> 289 select SYS_HAS_CPU_BMIPS32_3300
>> 290 select SYS_HAS_CPU_BMIPS4350
>> 291 select SYS_HAS_CPU_BMIPS4380
>> 292 select SWAP_IO_SPACE
>> 293 select GPIOLIB
>> 294 select HAVE_CLK
>> 295 select MIPS_L1_CACHE_SHIFT_4
>> 296 select CLKDEV_LOOKUP
>> 297 help
>> 298 Support for BCM63XX based boards
>> 299
>> 300 config MIPS_COBALT
>> 301 bool "Cobalt Server"
>> 302 select CEVT_R4K
>> 303 select CSRC_R4K
>> 304 select CEVT_GT641XX
>> 305 select DMA_NONCOHERENT
>> 306 select HW_HAS_PCI
>> 307 select I8253
>> 308 select I8259
>> 309 select IRQ_MIPS_CPU
>> 310 select IRQ_GT641XX
>> 311 select PCI_GT64XXX_PCI0
>> 312 select PCI
>> 313 select SYS_HAS_CPU_NEVADA
>> 314 select SYS_HAS_EARLY_PRINTK
>> 315 select SYS_SUPPORTS_32BIT_KERNEL
>> 316 select SYS_SUPPORTS_64BIT_KERNEL
>> 317 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 318 select USE_GENERIC_EARLY_PRINTK_8250
>> 319
>> 320 config MACH_DECSTATION
>> 321 bool "DECstations"
>> 322 select BOOT_ELF32
>> 323 select CEVT_DS1287
>> 324 select CEVT_R4K if CPU_R4X00
>> 325 select CSRC_IOASIC
>> 326 select CSRC_R4K if CPU_R4X00
>> 327 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 328 select CPU_R4000_WORKAROUNDS if 64BIT
>> 329 select CPU_R4400_WORKAROUNDS if 64BIT
>> 330 select DMA_NONCOHERENT
>> 331 select NO_IOPORT_MAP
>> 332 select IRQ_MIPS_CPU
>> 333 select SYS_HAS_CPU_R3000
>> 334 select SYS_HAS_CPU_R4X00
>> 335 select SYS_SUPPORTS_32BIT_KERNEL
>> 336 select SYS_SUPPORTS_64BIT_KERNEL
>> 337 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 338 select SYS_SUPPORTS_128HZ
>> 339 select SYS_SUPPORTS_256HZ
>> 340 select SYS_SUPPORTS_1024HZ
>> 341 select MIPS_L1_CACHE_SHIFT_4
>> 342 help
>> 343 This enables support for DEC's MIPS based workstations. For details
>> 344 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 345 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 346
>> 347 If you have one of the following DECstation Models you definitely
>> 348 want to choose R4xx0 for the CPU Type:
>> 349
>> 350 DECstation 5000/50
>> 351 DECstation 5000/150
>> 352 DECstation 5000/260
>> 353 DECsystem 5900/260
>> 354
>> 355 otherwise choose R3000.
>> 356
>> 357 config MACH_JAZZ
>> 358 bool "Jazz family of machines"
>> 359 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 360 select ARCH_MIGHT_HAVE_PC_SERIO
>> 361 select FW_ARC
>> 362 select FW_ARC32
>> 363 select ARCH_MAY_HAVE_PC_FDC
>> 364 select CEVT_R4K
>> 365 select CSRC_R4K
>> 366 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 367 select GENERIC_ISA_DMA
>> 368 select HAVE_PCSPKR_PLATFORM
>> 369 select IRQ_MIPS_CPU
>> 370 select I8253
>> 371 select I8259
>> 372 select ISA
>> 373 select SYS_HAS_CPU_R4X00
>> 374 select SYS_SUPPORTS_32BIT_KERNEL
>> 375 select SYS_SUPPORTS_64BIT_KERNEL
>> 376 select SYS_SUPPORTS_100HZ
>> 377 help
>> 378 This a family of machines based on the MIPS R4030 chipset which was
>> 379 used by several vendors to build RISC/os and Windows NT workstations.
>> 380 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 381 Olivetti M700-10 workstations.
>> 382
>> 383 config MACH_INGENIC
>> 384 bool "Ingenic SoC based machines"
>> 385 select SYS_SUPPORTS_32BIT_KERNEL
>> 386 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 387 select SYS_SUPPORTS_ZBOOT_UART16550
>> 388 select DMA_NONCOHERENT
>> 389 select IRQ_MIPS_CPU
>> 390 select PINCTRL
>> 391 select GPIOLIB
>> 392 select COMMON_CLK
>> 393 select GENERIC_IRQ_CHIP
>> 394 select BUILTIN_DTB
>> 395 select USE_OF
>> 396 select LIBFDT
>> 397
>> 398 config LANTIQ
>> 399 bool "Lantiq based platforms"
>> 400 select DMA_NONCOHERENT
>> 401 select IRQ_MIPS_CPU
>> 402 select CEVT_R4K
>> 403 select CSRC_R4K
>> 404 select SYS_HAS_CPU_MIPS32_R1
>> 405 select SYS_HAS_CPU_MIPS32_R2
>> 406 select SYS_SUPPORTS_BIG_ENDIAN
>> 407 select SYS_SUPPORTS_32BIT_KERNEL
>> 408 select SYS_SUPPORTS_MIPS16
>> 409 select SYS_SUPPORTS_MULTITHREADING
>> 410 select SYS_SUPPORTS_VPE_LOADER
>> 411 select SYS_HAS_EARLY_PRINTK
>> 412 select GPIOLIB
>> 413 select SWAP_IO_SPACE
>> 414 select BOOT_RAW
>> 415 select CLKDEV_LOOKUP
>> 416 select USE_OF
>> 417 select PINCTRL
>> 418 select PINCTRL_LANTIQ
>> 419 select ARCH_HAS_RESET_CONTROLLER
>> 420 select RESET_CONTROLLER
>> 421
>> 422 config LASAT
>> 423 bool "LASAT Networks platforms"
>> 424 select CEVT_R4K
>> 425 select CRC32
>> 426 select CSRC_R4K
>> 427 select DMA_NONCOHERENT
>> 428 select SYS_HAS_EARLY_PRINTK
>> 429 select HW_HAS_PCI
>> 430 select IRQ_MIPS_CPU
>> 431 select PCI_GT64XXX_PCI0
>> 432 select MIPS_NILE4
>> 433 select R5000_CPU_SCACHE
>> 434 select SYS_HAS_CPU_R5000
>> 435 select SYS_SUPPORTS_32BIT_KERNEL
>> 436 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
>> 437 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 438
>> 439 config MACH_LOONGSON32
>> 440 bool "Loongson-1 family of machines"
>> 441 select SYS_SUPPORTS_ZBOOT
>> 442 help
>> 443 This enables support for the Loongson-1 family of machines.
>> 444
>> 445 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 446 the Institute of Computing Technology (ICT), Chinese Academy of
>> 447 Sciences (CAS).
>> 448
>> 449 config MACH_LOONGSON64
>> 450 bool "Loongson-2/3 family of machines"
>> 451 select SYS_SUPPORTS_ZBOOT
>> 452 help
>> 453 This enables the support of Loongson-2/3 family of machines.
>> 454
>> 455 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
>> 456 family of multi-core CPUs. They are both 64-bit general-purpose
>> 457 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
>> 458 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
>> 459 in the People's Republic of China. The chief architect is Professor
>> 460 Weiwu Hu.
>> 461
>> 462 config MACH_PISTACHIO
>> 463 bool "IMG Pistachio SoC based boards"
>> 464 select BOOT_ELF32
>> 465 select BOOT_RAW
>> 466 select CEVT_R4K
>> 467 select CLKSRC_MIPS_GIC
>> 468 select COMMON_CLK
>> 469 select CSRC_R4K
>> 470 select DMA_NONCOHERENT
>> 471 select GPIOLIB
>> 472 select IRQ_MIPS_CPU
>> 473 select LIBFDT
>> 474 select MFD_SYSCON
>> 475 select MIPS_CPU_SCACHE
>> 476 select MIPS_GIC
>> 477 select PINCTRL
>> 478 select REGULATOR
>> 479 select SYS_HAS_CPU_MIPS32_R2
>> 480 select SYS_SUPPORTS_32BIT_KERNEL
>> 481 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 482 select SYS_SUPPORTS_MIPS_CPS
>> 483 select SYS_SUPPORTS_MULTITHREADING
>> 484 select SYS_SUPPORTS_RELOCATABLE
>> 485 select SYS_SUPPORTS_ZBOOT
>> 486 select SYS_HAS_EARLY_PRINTK
>> 487 select USE_GENERIC_EARLY_PRINTK_8250
>> 488 select USE_OF
>> 489 help
>> 490 This enables support for the IMG Pistachio SoC platform.
>> 491
>> 492 config MIPS_MALTA
>> 493 bool "MIPS Malta board"
>> 494 select ARCH_MAY_HAVE_PC_FDC
>> 495 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 496 select ARCH_MIGHT_HAVE_PC_SERIO
>> 497 select BOOT_ELF32
>> 498 select BOOT_RAW
>> 499 select BUILTIN_DTB
>> 500 select CEVT_R4K
>> 501 select CSRC_R4K
>> 502 select CLKSRC_MIPS_GIC
>> 503 select COMMON_CLK
>> 504 select DMA_MAYBE_COHERENT
>> 505 select GENERIC_ISA_DMA
>> 506 select HAVE_PCSPKR_PLATFORM
>> 507 select IRQ_MIPS_CPU
>> 508 select MIPS_GIC
>> 509 select HW_HAS_PCI
>> 510 select I8253
>> 511 select I8259
>> 512 select MIPS_BONITO64
>> 513 select MIPS_CPU_SCACHE
>> 514 select MIPS_L1_CACHE_SHIFT_6
>> 515 select PCI_GT64XXX_PCI0
>> 516 select MIPS_MSC
>> 517 select SMP_UP if SMP
>> 518 select SWAP_IO_SPACE
>> 519 select SYS_HAS_CPU_MIPS32_R1
>> 520 select SYS_HAS_CPU_MIPS32_R2
>> 521 select SYS_HAS_CPU_MIPS32_R3_5
>> 522 select SYS_HAS_CPU_MIPS32_R5
>> 523 select SYS_HAS_CPU_MIPS32_R6
>> 524 select SYS_HAS_CPU_MIPS64_R1
>> 525 select SYS_HAS_CPU_MIPS64_R2
>> 526 select SYS_HAS_CPU_MIPS64_R6
>> 527 select SYS_HAS_CPU_NEVADA
>> 528 select SYS_HAS_CPU_RM7000
>> 529 select SYS_SUPPORTS_32BIT_KERNEL
>> 530 select SYS_SUPPORTS_64BIT_KERNEL
>> 531 select SYS_SUPPORTS_BIG_ENDIAN
>> 532 select SYS_SUPPORTS_HIGHMEM
>> 533 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 534 select SYS_SUPPORTS_MICROMIPS
>> 535 select SYS_SUPPORTS_MIPS_CMP
>> 536 select SYS_SUPPORTS_MIPS_CPS
>> 537 select SYS_SUPPORTS_MIPS16
>> 538 select SYS_SUPPORTS_MULTITHREADING
>> 539 select SYS_SUPPORTS_SMARTMIPS
>> 540 select SYS_SUPPORTS_VPE_LOADER
>> 541 select SYS_SUPPORTS_ZBOOT
>> 542 select SYS_SUPPORTS_RELOCATABLE
>> 543 select USE_OF
>> 544 select LIBFDT
210 select ZONE_DMA32 if 64BIT 545 select ZONE_DMA32 if 64BIT
>> 546 select BUILTIN_DTB
>> 547 select LIBFDT
>> 548 help
>> 549 This enables support for the MIPS Technologies Malta evaluation
>> 550 board.
211 551
212 config RUSTC_SUPPORTS_RISCV !! 552 config MACH_PIC32
213 def_bool y !! 553 bool "Microchip PIC32 Family"
214 depends on 64BIT !! 554 help
215 # Shadow call stack requires rustc ver !! 555 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) <<
232 556
233 config RISCV_USE_LINKER_RELAXATION !! 557 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
234 def_bool y !! 558 microcontrollers.
235 # https://github.com/llvm/llvm-project !! 559
236 depends on !LD_IS_LLD || LLD_VERSION > !! 560 config NEC_MARKEINS
>> 561 bool "NEC EMMA2RH Mark-eins board"
>> 562 select SOC_EMMA2RH
>> 563 select HW_HAS_PCI
>> 564 help
>> 565 This enables support for the NEC Electronics Mark-eins boards.
>> 566
>> 567 config MACH_VR41XX
>> 568 bool "NEC VR4100 series based machines"
>> 569 select CEVT_R4K
>> 570 select CSRC_R4K
>> 571 select SYS_HAS_CPU_VR41XX
>> 572 select SYS_SUPPORTS_MIPS16
>> 573 select GPIOLIB
>> 574
>> 575 config NXP_STB220
>> 576 bool "NXP STB220 board"
>> 577 select SOC_PNX833X
>> 578 help
>> 579 Support for NXP Semiconductors STB220 Development Board.
>> 580
>> 581 config NXP_STB225
>> 582 bool "NXP 225 board"
>> 583 select SOC_PNX833X
>> 584 select SOC_PNX8335
>> 585 help
>> 586 Support for NXP Semiconductors STB225 Development Board.
>> 587
>> 588 config PMC_MSP
>> 589 bool "PMC-Sierra MSP chipsets"
>> 590 select CEVT_R4K
>> 591 select CSRC_R4K
>> 592 select DMA_NONCOHERENT
>> 593 select SWAP_IO_SPACE
>> 594 select NO_EXCEPT_FILL
>> 595 select BOOT_RAW
>> 596 select SYS_HAS_CPU_MIPS32_R1
>> 597 select SYS_HAS_CPU_MIPS32_R2
>> 598 select SYS_SUPPORTS_32BIT_KERNEL
>> 599 select SYS_SUPPORTS_BIG_ENDIAN
>> 600 select SYS_SUPPORTS_MIPS16
>> 601 select IRQ_MIPS_CPU
>> 602 select SERIAL_8250
>> 603 select SERIAL_8250_CONSOLE
>> 604 select USB_EHCI_BIG_ENDIAN_MMIO
>> 605 select USB_EHCI_BIG_ENDIAN_DESC
>> 606 help
>> 607 This adds support for the PMC-Sierra family of Multi-Service
>> 608 Processor System-On-A-Chips. These parts include a number
>> 609 of integrated peripherals, interfaces and DSPs in addition to
>> 610 a variety of MIPS cores.
>> 611
>> 612 config RALINK
>> 613 bool "Ralink based machines"
>> 614 select CEVT_R4K
>> 615 select CSRC_R4K
>> 616 select BOOT_RAW
>> 617 select DMA_NONCOHERENT
>> 618 select IRQ_MIPS_CPU
>> 619 select USE_OF
>> 620 select SYS_HAS_CPU_MIPS32_R1
>> 621 select SYS_HAS_CPU_MIPS32_R2
>> 622 select SYS_SUPPORTS_32BIT_KERNEL
>> 623 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 624 select SYS_SUPPORTS_MIPS16
>> 625 select SYS_HAS_EARLY_PRINTK
>> 626 select CLKDEV_LOOKUP
>> 627 select ARCH_HAS_RESET_CONTROLLER
>> 628 select RESET_CONTROLLER
>> 629
>> 630 config SGI_IP22
>> 631 bool "SGI IP22 (Indy/Indigo2)"
>> 632 select FW_ARC
>> 633 select FW_ARC32
>> 634 select ARCH_MIGHT_HAVE_PC_SERIO
>> 635 select BOOT_ELF32
>> 636 select CEVT_R4K
>> 637 select CSRC_R4K
>> 638 select DEFAULT_SGI_PARTITION
>> 639 select DMA_NONCOHERENT
>> 640 select HW_HAS_EISA
>> 641 select I8253
>> 642 select I8259
>> 643 select IP22_CPU_SCACHE
>> 644 select IRQ_MIPS_CPU
>> 645 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 646 select SGI_HAS_I8042
>> 647 select SGI_HAS_INDYDOG
>> 648 select SGI_HAS_HAL2
>> 649 select SGI_HAS_SEEQ
>> 650 select SGI_HAS_WD93
>> 651 select SGI_HAS_ZILOG
>> 652 select SWAP_IO_SPACE
>> 653 select SYS_HAS_CPU_R4X00
>> 654 select SYS_HAS_CPU_R5000
>> 655 #
>> 656 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 657 # memory during early boot on some machines.
>> 658 #
>> 659 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 660 # for a more details discussion
>> 661 #
>> 662 # select SYS_HAS_EARLY_PRINTK
>> 663 select SYS_SUPPORTS_32BIT_KERNEL
>> 664 select SYS_SUPPORTS_64BIT_KERNEL
>> 665 select SYS_SUPPORTS_BIG_ENDIAN
>> 666 select MIPS_L1_CACHE_SHIFT_7
>> 667 help
>> 668 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 669 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 670 that runs on these, say Y here.
>> 671
>> 672 config SGI_IP27
>> 673 bool "SGI IP27 (Origin200/2000)"
>> 674 select ARCH_HAS_PHYS_TO_DMA
>> 675 select FW_ARC
>> 676 select FW_ARC64
>> 677 select BOOT_ELF64
>> 678 select DEFAULT_SGI_PARTITION
>> 679 select SYS_HAS_EARLY_PRINTK
>> 680 select HW_HAS_PCI
>> 681 select NR_CPUS_DEFAULT_64
>> 682 select SYS_HAS_CPU_R10000
>> 683 select SYS_SUPPORTS_64BIT_KERNEL
>> 684 select SYS_SUPPORTS_BIG_ENDIAN
>> 685 select SYS_SUPPORTS_NUMA
>> 686 select SYS_SUPPORTS_SMP
>> 687 select MIPS_L1_CACHE_SHIFT_7
>> 688 help
>> 689 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 690 workstations. To compile a Linux kernel that runs on these, say Y
>> 691 here.
237 692
238 # https://github.com/llvm/llvm-project/commit/ !! 693 config SGI_IP28
239 config ARCH_HAS_BROKEN_DWARF5 !! 694 bool "SGI IP28 (Indigo2 R10k)"
240 def_bool y !! 695 select FW_ARC
241 depends on RISCV_USE_LINKER_RELAXATION !! 696 select FW_ARC64
242 # https://github.com/llvm/llvm-project !! 697 select ARCH_MIGHT_HAVE_PC_SERIO
243 depends on AS_IS_LLVM && AS_VERSION < !! 698 select BOOT_ELF64
244 # https://github.com/llvm/llvm-project !! 699 select CEVT_R4K
245 depends on LD_IS_LLD && LLD_VERSION < !! 700 select CSRC_R4K
>> 701 select DEFAULT_SGI_PARTITION
>> 702 select DMA_NONCOHERENT
>> 703 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 704 select IRQ_MIPS_CPU
>> 705 select HW_HAS_EISA
>> 706 select I8253
>> 707 select I8259
>> 708 select SGI_HAS_I8042
>> 709 select SGI_HAS_INDYDOG
>> 710 select SGI_HAS_HAL2
>> 711 select SGI_HAS_SEEQ
>> 712 select SGI_HAS_WD93
>> 713 select SGI_HAS_ZILOG
>> 714 select SWAP_IO_SPACE
>> 715 select SYS_HAS_CPU_R10000
>> 716 #
>> 717 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 718 # memory during early boot on some machines.
>> 719 #
>> 720 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 721 # for a more details discussion
>> 722 #
>> 723 # select SYS_HAS_EARLY_PRINTK
>> 724 select SYS_SUPPORTS_64BIT_KERNEL
>> 725 select SYS_SUPPORTS_BIG_ENDIAN
>> 726 select MIPS_L1_CACHE_SHIFT_7
>> 727 help
>> 728 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 729 kernel that runs on these, say Y here.
>> 730
>> 731 config SGI_IP32
>> 732 bool "SGI IP32 (O2)"
>> 733 select ARCH_HAS_PHYS_TO_DMA
>> 734 select FW_ARC
>> 735 select FW_ARC32
>> 736 select BOOT_ELF32
>> 737 select CEVT_R4K
>> 738 select CSRC_R4K
>> 739 select DMA_NONCOHERENT
>> 740 select HW_HAS_PCI
>> 741 select IRQ_MIPS_CPU
>> 742 select R5000_CPU_SCACHE
>> 743 select RM7000_CPU_SCACHE
>> 744 select SYS_HAS_CPU_R5000
>> 745 select SYS_HAS_CPU_R10000 if BROKEN
>> 746 select SYS_HAS_CPU_RM7000
>> 747 select SYS_HAS_CPU_NEVADA
>> 748 select SYS_SUPPORTS_64BIT_KERNEL
>> 749 select SYS_SUPPORTS_BIG_ENDIAN
>> 750 help
>> 751 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 752
>> 753 config SIBYTE_CRHINE
>> 754 bool "Sibyte BCM91120C-CRhine"
>> 755 select BOOT_ELF32
>> 756 select SIBYTE_BCM1120
>> 757 select SWAP_IO_SPACE
>> 758 select SYS_HAS_CPU_SB1
>> 759 select SYS_SUPPORTS_BIG_ENDIAN
>> 760 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 761
>> 762 config SIBYTE_CARMEL
>> 763 bool "Sibyte BCM91120x-Carmel"
>> 764 select BOOT_ELF32
>> 765 select SIBYTE_BCM1120
>> 766 select SWAP_IO_SPACE
>> 767 select SYS_HAS_CPU_SB1
>> 768 select SYS_SUPPORTS_BIG_ENDIAN
>> 769 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 770
>> 771 config SIBYTE_CRHONE
>> 772 bool "Sibyte BCM91125C-CRhone"
>> 773 select BOOT_ELF32
>> 774 select SIBYTE_BCM1125
>> 775 select SWAP_IO_SPACE
>> 776 select SYS_HAS_CPU_SB1
>> 777 select SYS_SUPPORTS_BIG_ENDIAN
>> 778 select SYS_SUPPORTS_HIGHMEM
>> 779 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 780
>> 781 config SIBYTE_RHONE
>> 782 bool "Sibyte BCM91125E-Rhone"
>> 783 select BOOT_ELF32
>> 784 select SIBYTE_BCM1125H
>> 785 select SWAP_IO_SPACE
>> 786 select SYS_HAS_CPU_SB1
>> 787 select SYS_SUPPORTS_BIG_ENDIAN
>> 788 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 789
>> 790 config SIBYTE_SWARM
>> 791 bool "Sibyte BCM91250A-SWARM"
>> 792 select BOOT_ELF32
>> 793 select HAVE_PATA_PLATFORM
>> 794 select SIBYTE_SB1250
>> 795 select SWAP_IO_SPACE
>> 796 select SYS_HAS_CPU_SB1
>> 797 select SYS_SUPPORTS_BIG_ENDIAN
>> 798 select SYS_SUPPORTS_HIGHMEM
>> 799 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 800 select ZONE_DMA32 if 64BIT
>> 801 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
246 802
247 config ARCH_MMAP_RND_BITS_MIN !! 803 config SIBYTE_LITTLESUR
248 default 18 if 64BIT !! 804 bool "Sibyte BCM91250C2-LittleSur"
249 default 8 !! 805 select BOOT_ELF32
>> 806 select HAVE_PATA_PLATFORM
>> 807 select SIBYTE_SB1250
>> 808 select SWAP_IO_SPACE
>> 809 select SYS_HAS_CPU_SB1
>> 810 select SYS_SUPPORTS_BIG_ENDIAN
>> 811 select SYS_SUPPORTS_HIGHMEM
>> 812 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 813 select ZONE_DMA32 if 64BIT
250 814
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 815 config SIBYTE_SENTOSA
252 default 8 !! 816 bool "Sibyte BCM91250E-Sentosa"
>> 817 select BOOT_ELF32
>> 818 select SIBYTE_SB1250
>> 819 select SWAP_IO_SPACE
>> 820 select SYS_HAS_CPU_SB1
>> 821 select SYS_SUPPORTS_BIG_ENDIAN
>> 822 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 823 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
>> 824
>> 825 config SIBYTE_BIGSUR
>> 826 bool "Sibyte BCM91480B-BigSur"
>> 827 select BOOT_ELF32
>> 828 select NR_CPUS_DEFAULT_4
>> 829 select SIBYTE_BCM1x80
>> 830 select SWAP_IO_SPACE
>> 831 select SYS_HAS_CPU_SB1
>> 832 select SYS_SUPPORTS_BIG_ENDIAN
>> 833 select SYS_SUPPORTS_HIGHMEM
>> 834 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 835 select ZONE_DMA32 if 64BIT
>> 836 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
253 837
254 # max bits determined by the following formula !! 838 config SNI_RM
255 # VA_BITS - PAGE_SHIFT - 3 !! 839 bool "SNI RM200/300/400"
256 config ARCH_MMAP_RND_BITS_MAX !! 840 select FW_ARC if CPU_LITTLE_ENDIAN
257 default 24 if 64BIT # SV39 based !! 841 select FW_ARC32 if CPU_LITTLE_ENDIAN
258 default 17 !! 842 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 843 select ARCH_MAY_HAVE_PC_FDC
>> 844 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 845 select ARCH_MIGHT_HAVE_PC_SERIO
>> 846 select BOOT_ELF32
>> 847 select CEVT_R4K
>> 848 select CSRC_R4K
>> 849 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 850 select DMA_NONCOHERENT
>> 851 select GENERIC_ISA_DMA
>> 852 select HAVE_PCSPKR_PLATFORM
>> 853 select HW_HAS_EISA
>> 854 select HW_HAS_PCI
>> 855 select IRQ_MIPS_CPU
>> 856 select I8253
>> 857 select I8259
>> 858 select ISA
>> 859 select MIPS_L1_CACHE_SHIFT_6
>> 860 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 861 select SYS_HAS_CPU_R4X00
>> 862 select SYS_HAS_CPU_R5000
>> 863 select SYS_HAS_CPU_R10000
>> 864 select R5000_CPU_SCACHE
>> 865 select SYS_HAS_EARLY_PRINTK
>> 866 select SYS_SUPPORTS_32BIT_KERNEL
>> 867 select SYS_SUPPORTS_64BIT_KERNEL
>> 868 select SYS_SUPPORTS_BIG_ENDIAN
>> 869 select SYS_SUPPORTS_HIGHMEM
>> 870 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 871 help
>> 872 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 873 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 874 Technology and now in turn merged with Fujitsu. Say Y here to
>> 875 support this machine type.
>> 876
>> 877 config MACH_TX39XX
>> 878 bool "Toshiba TX39 series based machines"
>> 879
>> 880 config MACH_TX49XX
>> 881 bool "Toshiba TX49 series based machines"
>> 882
>> 883 config MIKROTIK_RB532
>> 884 bool "Mikrotik RB532 boards"
>> 885 select CEVT_R4K
>> 886 select CSRC_R4K
>> 887 select DMA_NONCOHERENT
>> 888 select HW_HAS_PCI
>> 889 select IRQ_MIPS_CPU
>> 890 select SYS_HAS_CPU_MIPS32_R1
>> 891 select SYS_SUPPORTS_32BIT_KERNEL
>> 892 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 893 select SWAP_IO_SPACE
>> 894 select BOOT_RAW
>> 895 select GPIOLIB
>> 896 select MIPS_L1_CACHE_SHIFT_4
>> 897 help
>> 898 Support the Mikrotik(tm) RouterBoard 532 series,
>> 899 based on the IDT RC32434 SoC.
>> 900
>> 901 config CAVIUM_OCTEON_SOC
>> 902 bool "Cavium Networks Octeon SoC based boards"
>> 903 select CEVT_R4K
>> 904 select ARCH_HAS_PHYS_TO_DMA
>> 905 select HAS_RAPIDIO
>> 906 select PHYS_ADDR_T_64BIT
>> 907 select SYS_SUPPORTS_64BIT_KERNEL
>> 908 select SYS_SUPPORTS_BIG_ENDIAN
>> 909 select EDAC_SUPPORT
>> 910 select EDAC_ATOMIC_SCRUB
>> 911 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 912 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
>> 913 select SYS_HAS_EARLY_PRINTK
>> 914 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 915 select HW_HAS_PCI
>> 916 select ZONE_DMA32
>> 917 select HOLES_IN_ZONE
>> 918 select GPIOLIB
>> 919 select LIBFDT
>> 920 select USE_OF
>> 921 select ARCH_SPARSEMEM_ENABLE
>> 922 select SYS_SUPPORTS_SMP
>> 923 select NR_CPUS_DEFAULT_64
>> 924 select MIPS_NR_CPU_NR_MAP_1024
>> 925 select BUILTIN_DTB
>> 926 select MTD_COMPLEX_MAPPINGS
>> 927 select SWIOTLB
>> 928 select SYS_SUPPORTS_RELOCATABLE
>> 929 help
>> 930 This option supports all of the Octeon reference boards from Cavium
>> 931 Networks. It builds a kernel that dynamically determines the Octeon
>> 932 CPU type and supports all known board reference implementations.
>> 933 Some of the supported boards are:
>> 934 EBT3000
>> 935 EBH3000
>> 936 EBH3100
>> 937 Thunder
>> 938 Kodama
>> 939 Hikari
>> 940 Say Y here for most Octeon reference boards.
>> 941
>> 942 config NLM_XLR_BOARD
>> 943 bool "Netlogic XLR/XLS based systems"
>> 944 select BOOT_ELF32
>> 945 select NLM_COMMON
>> 946 select SYS_HAS_CPU_XLR
>> 947 select SYS_SUPPORTS_SMP
>> 948 select HW_HAS_PCI
>> 949 select SWAP_IO_SPACE
>> 950 select SYS_SUPPORTS_32BIT_KERNEL
>> 951 select SYS_SUPPORTS_64BIT_KERNEL
>> 952 select PHYS_ADDR_T_64BIT
>> 953 select SYS_SUPPORTS_BIG_ENDIAN
>> 954 select SYS_SUPPORTS_HIGHMEM
>> 955 select NR_CPUS_DEFAULT_32
>> 956 select CEVT_R4K
>> 957 select CSRC_R4K
>> 958 select IRQ_MIPS_CPU
>> 959 select ZONE_DMA32 if 64BIT
>> 960 select SYNC_R4K
>> 961 select SYS_HAS_EARLY_PRINTK
>> 962 select SYS_SUPPORTS_ZBOOT
>> 963 select SYS_SUPPORTS_ZBOOT_UART16550
>> 964 help
>> 965 Support for systems based on Netlogic XLR and XLS processors.
>> 966 Say Y here if you have a XLR or XLS based board.
>> 967
>> 968 config NLM_XLP_BOARD
>> 969 bool "Netlogic XLP based systems"
>> 970 select BOOT_ELF32
>> 971 select NLM_COMMON
>> 972 select SYS_HAS_CPU_XLP
>> 973 select SYS_SUPPORTS_SMP
>> 974 select HW_HAS_PCI
>> 975 select SYS_SUPPORTS_32BIT_KERNEL
>> 976 select SYS_SUPPORTS_64BIT_KERNEL
>> 977 select PHYS_ADDR_T_64BIT
>> 978 select GPIOLIB
>> 979 select SYS_SUPPORTS_BIG_ENDIAN
>> 980 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 981 select SYS_SUPPORTS_HIGHMEM
>> 982 select NR_CPUS_DEFAULT_32
>> 983 select CEVT_R4K
>> 984 select CSRC_R4K
>> 985 select IRQ_MIPS_CPU
>> 986 select ZONE_DMA32 if 64BIT
>> 987 select SYNC_R4K
>> 988 select SYS_HAS_EARLY_PRINTK
>> 989 select USE_OF
>> 990 select SYS_SUPPORTS_ZBOOT
>> 991 select SYS_SUPPORTS_ZBOOT_UART16550
>> 992 help
>> 993 This board is based on Netlogic XLP Processor.
>> 994 Say Y here if you have a XLP based board.
>> 995
>> 996 config MIPS_PARAVIRT
>> 997 bool "Para-Virtualized guest system"
>> 998 select CEVT_R4K
>> 999 select CSRC_R4K
>> 1000 select SYS_SUPPORTS_64BIT_KERNEL
>> 1001 select SYS_SUPPORTS_32BIT_KERNEL
>> 1002 select SYS_SUPPORTS_BIG_ENDIAN
>> 1003 select SYS_SUPPORTS_SMP
>> 1004 select NR_CPUS_DEFAULT_4
>> 1005 select SYS_HAS_EARLY_PRINTK
>> 1006 select SYS_HAS_CPU_MIPS32_R2
>> 1007 select SYS_HAS_CPU_MIPS64_R2
>> 1008 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 1009 select HW_HAS_PCI
>> 1010 select SWAP_IO_SPACE
>> 1011 help
>> 1012 This option supports guest running under ????
259 1013
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 1014 endchoice
261 default 17 <<
262 1015
263 # set if we run in machine mode, cleared if we !! 1016 source "arch/mips/alchemy/Kconfig"
264 config RISCV_M_MODE !! 1017 source "arch/mips/ath25/Kconfig"
265 bool "Build a kernel that runs in mach !! 1018 source "arch/mips/ath79/Kconfig"
266 depends on !MMU !! 1019 source "arch/mips/bcm47xx/Kconfig"
>> 1020 source "arch/mips/bcm63xx/Kconfig"
>> 1021 source "arch/mips/bmips/Kconfig"
>> 1022 source "arch/mips/generic/Kconfig"
>> 1023 source "arch/mips/jazz/Kconfig"
>> 1024 source "arch/mips/jz4740/Kconfig"
>> 1025 source "arch/mips/lantiq/Kconfig"
>> 1026 source "arch/mips/lasat/Kconfig"
>> 1027 source "arch/mips/pic32/Kconfig"
>> 1028 source "arch/mips/pistachio/Kconfig"
>> 1029 source "arch/mips/pmcs-msp71xx/Kconfig"
>> 1030 source "arch/mips/ralink/Kconfig"
>> 1031 source "arch/mips/sgi-ip27/Kconfig"
>> 1032 source "arch/mips/sibyte/Kconfig"
>> 1033 source "arch/mips/txx9/Kconfig"
>> 1034 source "arch/mips/vr41xx/Kconfig"
>> 1035 source "arch/mips/cavium-octeon/Kconfig"
>> 1036 source "arch/mips/loongson32/Kconfig"
>> 1037 source "arch/mips/loongson64/Kconfig"
>> 1038 source "arch/mips/netlogic/Kconfig"
>> 1039 source "arch/mips/paravirt/Kconfig"
>> 1040
>> 1041 endmenu
>> 1042
>> 1043 config RWSEM_GENERIC_SPINLOCK
>> 1044 bool
267 default y 1045 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 1046
272 # set if we are running in S-mode and can use !! 1047 config RWSEM_XCHGADD_ALGORITHM
273 config RISCV_SBI !! 1048 bool
>> 1049
>> 1050 config GENERIC_HWEIGHT
274 bool 1051 bool
275 depends on !RISCV_M_MODE <<
276 default y 1052 default y
277 1053
278 config MMU !! 1054 config GENERIC_CALIBRATE_DELAY
279 bool "MMU-based Paged Memory Managemen !! 1055 bool
280 default y 1056 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 1057
285 config PAGE_OFFSET !! 1058 config SCHED_OMIT_FRAME_POINTER
286 hex !! 1059 bool
287 default 0x80000000 if !MMU && RISCV_M_ !! 1060 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 1061
298 config ARCH_FLATMEM_ENABLE !! 1062 #
299 def_bool !NUMA !! 1063 # Select some configuration options automatically based on user selections.
>> 1064 #
>> 1065 config FW_ARC
>> 1066 bool
300 1067
301 config ARCH_SPARSEMEM_ENABLE !! 1068 config ARCH_MAY_HAVE_PC_FDC
302 def_bool y !! 1069 bool
303 depends on MMU <<
304 select SPARSEMEM_STATIC if 32BIT && SP <<
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B <<
306 1070
307 config ARCH_SELECT_MEMORY_MODEL !! 1071 config BOOT_RAW
308 def_bool ARCH_SPARSEMEM_ENABLE !! 1072 bool
309 1073
310 config ARCH_SUPPORTS_UPROBES !! 1074 config CEVT_BCM1480
311 def_bool y !! 1075 bool
312 1076
313 config STACKTRACE_SUPPORT !! 1077 config CEVT_DS1287
314 def_bool y !! 1078 bool
315 1079
316 config GENERIC_BUG !! 1080 config CEVT_GT641XX
317 def_bool y !! 1081 bool
318 depends on BUG <<
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 1082
321 config GENERIC_BUG_RELATIVE_POINTERS !! 1083 config CEVT_R4K
322 bool 1084 bool
323 1085
324 config GENERIC_CALIBRATE_DELAY !! 1086 config CEVT_SB1250
325 def_bool y !! 1087 bool
326 1088
327 config GENERIC_CSUM !! 1089 config CEVT_TXX9
328 def_bool y !! 1090 bool
329 1091
330 config GENERIC_HWEIGHT !! 1092 config CSRC_BCM1480
331 def_bool y !! 1093 bool
332 1094
333 config FIX_EARLYCON_MEM !! 1095 config CSRC_IOASIC
334 def_bool MMU !! 1096 bool
335 1097
336 config ILLEGAL_POINTER_VALUE !! 1098 config CSRC_R4K
337 hex !! 1099 bool
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 1100
341 config PGTABLE_LEVELS !! 1101 config CSRC_SB1250
342 int !! 1102 bool
343 default 5 if 64BIT <<
344 default 2 <<
345 1103
346 config LOCKDEP_SUPPORT !! 1104 config MIPS_CLOCK_VSYSCALL
347 def_bool y !! 1105 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
348 1106
349 config RISCV_DMA_NONCOHERENT !! 1107 config GPIO_TXX9
>> 1108 select GPIOLIB
>> 1109 bool
>> 1110
>> 1111 config FW_CFE
>> 1112 bool
>> 1113
>> 1114 config ARCH_SUPPORTS_UPROBES
>> 1115 bool
>> 1116
>> 1117 config DMA_MAYBE_COHERENT
>> 1118 select DMA_NONCOHERENT
>> 1119 bool
>> 1120
>> 1121 config DMA_PERDEV_COHERENT
>> 1122 bool
>> 1123 select DMA_MAYBE_COHERENT
>> 1124
>> 1125 config DMA_NONCOHERENT
350 bool 1126 bool
351 select ARCH_HAS_DMA_PREP_COHERENT <<
352 select ARCH_HAS_SETUP_DMA_OPS <<
353 select ARCH_HAS_SYNC_DMA_FOR_CPU <<
354 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1127 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if !! 1128 select ARCH_HAS_SYNC_DMA_FOR_CPU
>> 1129 select NEED_DMA_MAP_STATE
>> 1130 select DMA_NONCOHERENT_MMAP
>> 1131 select DMA_NONCOHERENT_CACHE_SYNC
>> 1132 select DMA_NONCOHERENT_OPS
356 1133
357 config RISCV_NONSTANDARD_CACHE_OPS !! 1134 config SYS_HAS_EARLY_PRINTK
358 bool 1135 bool
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 1136
363 config AS_HAS_INSN !! 1137 config SYS_SUPPORTS_HOTPLUG_CPU
364 def_bool $(as-instr,.insn r 51$(comma) !! 1138 bool
365 1139
366 config AS_HAS_OPTION_ARCH !! 1140 config MIPS_BONITO64
367 # https://github.com/llvm/llvm-project !! 1141 bool
368 def_bool y !! 1142
369 depends on $(as-instr, .option arch$(c !! 1143 config MIPS_MSC
>> 1144 bool
370 1145
371 source "arch/riscv/Kconfig.socs" !! 1146 config MIPS_NILE4
372 source "arch/riscv/Kconfig.errata" !! 1147 bool
373 1148
374 menu "Platform type" !! 1149 config SYNC_R4K
>> 1150 bool
>> 1151
>> 1152 config MIPS_MACHINE
>> 1153 def_bool n
>> 1154
>> 1155 config NO_IOPORT_MAP
>> 1156 def_bool n
>> 1157
>> 1158 config GENERIC_CSUM
>> 1159 bool
375 1160
376 config NONPORTABLE !! 1161 config GENERIC_ISA_DMA
377 bool "Allow configurations that result !! 1162 bool
>> 1163 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1164 select ISA_DMA_API
>> 1165
>> 1166 config GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 1167 bool
>> 1168 select GENERIC_ISA_DMA
>> 1169
>> 1170 config ISA_DMA_API
>> 1171 bool
>> 1172
>> 1173 config HOLES_IN_ZONE
>> 1174 bool
>> 1175
>> 1176 config SYS_SUPPORTS_RELOCATABLE
>> 1177 bool
378 help 1178 help
379 RISC-V kernel binaries are compatibl !! 1179 Selected if the platform supports relocating the kernel.
380 whenever possible, but there are som !! 1180 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
381 satisfied by configurations that res !! 1181 to allow access to command line and entropy sources.
382 not portable between systems. <<
383 1182
384 Selecting N does not guarantee kerne !! 1183 config MIPS_CBPF_JIT
385 systems. Selecting any of the optio !! 1184 def_bool y
386 result in kernel binaries that are u !! 1185 depends on BPF_JIT && HAVE_CBPF_JIT
387 systems. <<
388 1186
389 If unsure, say N. !! 1187 config MIPS_EBPF_JIT
>> 1188 def_bool y
>> 1189 depends on BPF_JIT && HAVE_EBPF_JIT
390 1190
>> 1191
>> 1192 #
>> 1193 # Endianness selection. Sufficiently obscure so many users don't know what to
>> 1194 # answer,so we try hard to limit the available choices. Also the use of a
>> 1195 # choice statement should be more obvious to the user.
>> 1196 #
391 choice 1197 choice
392 prompt "Base ISA" !! 1198 prompt "Endianness selection"
393 default ARCH_RV64I <<
394 help 1199 help
395 This selects the base ISA that this !! 1200 Some MIPS machines can be configured for either little or big endian
396 the target platform. !! 1201 byte order. These modes require different kernels and a different
>> 1202 Linux distribution. In general there is one preferred byteorder for a
>> 1203 particular system but some systems are just as commonly used in the
>> 1204 one or the other endianness.
>> 1205
>> 1206 config CPU_BIG_ENDIAN
>> 1207 bool "Big endian"
>> 1208 depends on SYS_SUPPORTS_BIG_ENDIAN
>> 1209
>> 1210 config CPU_LITTLE_ENDIAN
>> 1211 bool "Little endian"
>> 1212 depends on SYS_SUPPORTS_LITTLE_ENDIAN
397 1213
398 config ARCH_RV32I !! 1214 endchoice
399 bool "RV32I" <<
400 depends on NONPORTABLE <<
401 select 32BIT <<
402 select GENERIC_LIB_ASHLDI3 <<
403 select GENERIC_LIB_ASHRDI3 <<
404 select GENERIC_LIB_LSHRDI3 <<
405 select GENERIC_LIB_UCMPDI2 <<
406 1215
407 config ARCH_RV64I !! 1216 config EXPORT_UASM
408 bool "RV64I" !! 1217 bool
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 1218
413 endchoice !! 1219 config SYS_SUPPORTS_APM_EMULATION
>> 1220 bool
>> 1221
>> 1222 config SYS_SUPPORTS_BIG_ENDIAN
>> 1223 bool
>> 1224
>> 1225 config SYS_SUPPORTS_LITTLE_ENDIAN
>> 1226 bool
>> 1227
>> 1228 config SYS_SUPPORTS_HUGETLBFS
>> 1229 bool
>> 1230 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
>> 1231 default y
>> 1232
>> 1233 config MIPS_HUGE_TLB_SUPPORT
>> 1234 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
>> 1235
>> 1236 config IRQ_CPU_RM7K
>> 1237 bool
>> 1238
>> 1239 config IRQ_MSP_SLP
>> 1240 bool
>> 1241
>> 1242 config IRQ_MSP_CIC
>> 1243 bool
>> 1244
>> 1245 config IRQ_TXX9
>> 1246 bool
>> 1247
>> 1248 config IRQ_GT641XX
>> 1249 bool
>> 1250
>> 1251 config PCI_GT64XXX_PCI0
>> 1252 bool
>> 1253
>> 1254 config NO_EXCEPT_FILL
>> 1255 bool
>> 1256
>> 1257 config SOC_EMMA2RH
>> 1258 bool
>> 1259 select CEVT_R4K
>> 1260 select CSRC_R4K
>> 1261 select DMA_NONCOHERENT
>> 1262 select IRQ_MIPS_CPU
>> 1263 select SWAP_IO_SPACE
>> 1264 select SYS_HAS_CPU_R5500
>> 1265 select SYS_SUPPORTS_32BIT_KERNEL
>> 1266 select SYS_SUPPORTS_64BIT_KERNEL
>> 1267 select SYS_SUPPORTS_BIG_ENDIAN
>> 1268
>> 1269 config SOC_PNX833X
>> 1270 bool
>> 1271 select CEVT_R4K
>> 1272 select CSRC_R4K
>> 1273 select IRQ_MIPS_CPU
>> 1274 select DMA_NONCOHERENT
>> 1275 select SYS_HAS_CPU_MIPS32_R2
>> 1276 select SYS_SUPPORTS_32BIT_KERNEL
>> 1277 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 1278 select SYS_SUPPORTS_BIG_ENDIAN
>> 1279 select SYS_SUPPORTS_MIPS16
>> 1280 select CPU_MIPSR2_IRQ_VI
>> 1281
>> 1282 config SOC_PNX8335
>> 1283 bool
>> 1284 select SOC_PNX833X
>> 1285
>> 1286 config MIPS_SPRAM
>> 1287 bool
>> 1288
>> 1289 config SWAP_IO_SPACE
>> 1290 bool
>> 1291
>> 1292 config SGI_HAS_INDYDOG
>> 1293 bool
>> 1294
>> 1295 config SGI_HAS_HAL2
>> 1296 bool
>> 1297
>> 1298 config SGI_HAS_SEEQ
>> 1299 bool
>> 1300
>> 1301 config SGI_HAS_WD93
>> 1302 bool
>> 1303
>> 1304 config SGI_HAS_ZILOG
>> 1305 bool
>> 1306
>> 1307 config SGI_HAS_I8042
>> 1308 bool
>> 1309
>> 1310 config DEFAULT_SGI_PARTITION
>> 1311 bool
>> 1312
>> 1313 config FW_ARC32
>> 1314 bool
>> 1315
>> 1316 config FW_SNIPROM
>> 1317 bool
>> 1318
>> 1319 config BOOT_ELF32
>> 1320 bool
>> 1321
>> 1322 config MIPS_L1_CACHE_SHIFT_4
>> 1323 bool
>> 1324
>> 1325 config MIPS_L1_CACHE_SHIFT_5
>> 1326 bool
>> 1327
>> 1328 config MIPS_L1_CACHE_SHIFT_6
>> 1329 bool
>> 1330
>> 1331 config MIPS_L1_CACHE_SHIFT_7
>> 1332 bool
>> 1333
>> 1334 config MIPS_L1_CACHE_SHIFT
>> 1335 int
>> 1336 default "7" if MIPS_L1_CACHE_SHIFT_7
>> 1337 default "6" if MIPS_L1_CACHE_SHIFT_6
>> 1338 default "5" if MIPS_L1_CACHE_SHIFT_5
>> 1339 default "4" if MIPS_L1_CACHE_SHIFT_4
>> 1340 default "5"
>> 1341
>> 1342 config HAVE_STD_PC_SERIAL_PORT
>> 1343 bool
>> 1344
>> 1345 config ARC_CONSOLE
>> 1346 bool "ARC console support"
>> 1347 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
>> 1348
>> 1349 config ARC_MEMORY
>> 1350 bool
>> 1351 depends on MACH_JAZZ || SNI_RM || SGI_IP32
>> 1352 default y
>> 1353
>> 1354 config ARC_PROMLIB
>> 1355 bool
>> 1356 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
>> 1357 default y
>> 1358
>> 1359 config FW_ARC64
>> 1360 bool
>> 1361
>> 1362 config BOOT_ELF64
>> 1363 bool
>> 1364
>> 1365 menu "CPU selection"
414 1366
415 # We must be able to map all physical memory i <<
416 # is still a bit more efficient when generatin <<
417 # such that it can only map 2GiB of memory. <<
418 choice 1367 choice
419 prompt "Kernel Code Model" !! 1368 prompt "CPU type"
420 default CMODEL_MEDLOW if 32BIT !! 1369 default CPU_R4X00
421 default CMODEL_MEDANY if 64BIT !! 1370
422 !! 1371 config CPU_LOONGSON3
423 config CMODEL_MEDLOW !! 1372 bool "Loongson 3 CPU"
424 bool "medium low code model" !! 1373 depends on SYS_HAS_CPU_LOONGSON3
425 config CMODEL_MEDANY !! 1374 select ARCH_HAS_PHYS_TO_DMA
426 bool "medium any code model" !! 1375 select CPU_SUPPORTS_64BIT_KERNEL
>> 1376 select CPU_SUPPORTS_HIGHMEM
>> 1377 select CPU_SUPPORTS_HUGEPAGES
>> 1378 select WEAK_ORDERING
>> 1379 select WEAK_REORDERING_BEYOND_LLSC
>> 1380 select MIPS_PGD_C0_CONTEXT
>> 1381 select MIPS_L1_CACHE_SHIFT_6
>> 1382 select MIPS_FP_SUPPORT
>> 1383 select GPIOLIB
>> 1384 select SWIOTLB
>> 1385 help
>> 1386 The Loongson 3 processor implements the MIPS64R2 instruction
>> 1387 set with many extensions.
>> 1388
>> 1389 config LOONGSON3_ENHANCEMENT
>> 1390 bool "New Loongson 3 CPU Enhancements"
>> 1391 default n
>> 1392 select CPU_MIPSR2
>> 1393 select CPU_HAS_PREFETCH
>> 1394 depends on CPU_LOONGSON3
>> 1395 help
>> 1396 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
>> 1397 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
>> 1398 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
>> 1399 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
>> 1400 Fast TLB refill support, etc.
>> 1401
>> 1402 This option enable those enhancements which are not probed at run
>> 1403 time. If you want a generic kernel to run on all Loongson 3 machines,
>> 1404 please say 'N' here. If you want a high-performance kernel to run on
>> 1405 new Loongson 3 machines only, please say 'Y' here.
>> 1406
>> 1407 config CPU_LOONGSON2E
>> 1408 bool "Loongson 2E"
>> 1409 depends on SYS_HAS_CPU_LOONGSON2E
>> 1410 select CPU_LOONGSON2
>> 1411 help
>> 1412 The Loongson 2E processor implements the MIPS III instruction set
>> 1413 with many extensions.
>> 1414
>> 1415 It has an internal FPGA northbridge, which is compatible to
>> 1416 bonito64.
>> 1417
>> 1418 config CPU_LOONGSON2F
>> 1419 bool "Loongson 2F"
>> 1420 depends on SYS_HAS_CPU_LOONGSON2F
>> 1421 select CPU_LOONGSON2
>> 1422 select GPIOLIB
>> 1423 help
>> 1424 The Loongson 2F processor implements the MIPS III instruction set
>> 1425 with many extensions.
>> 1426
>> 1427 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
>> 1428 have a similar programming interface with FPGA northbridge used in
>> 1429 Loongson2E.
>> 1430
>> 1431 config CPU_LOONGSON1B
>> 1432 bool "Loongson 1B"
>> 1433 depends on SYS_HAS_CPU_LOONGSON1B
>> 1434 select CPU_LOONGSON1
>> 1435 select LEDS_GPIO_REGISTER
>> 1436 help
>> 1437 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> 1438 Release 1 instruction set and part of the MIPS32 Release 2
>> 1439 instruction set.
>> 1440
>> 1441 config CPU_LOONGSON1C
>> 1442 bool "Loongson 1C"
>> 1443 depends on SYS_HAS_CPU_LOONGSON1C
>> 1444 select CPU_LOONGSON1
>> 1445 select LEDS_GPIO_REGISTER
>> 1446 help
>> 1447 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
>> 1448 Release 1 instruction set and part of the MIPS32 Release 2
>> 1449 instruction set.
>> 1450
>> 1451 config CPU_MIPS32_R1
>> 1452 bool "MIPS32 Release 1"
>> 1453 depends on SYS_HAS_CPU_MIPS32_R1
>> 1454 select CPU_HAS_PREFETCH
>> 1455 select CPU_SUPPORTS_32BIT_KERNEL
>> 1456 select CPU_SUPPORTS_HIGHMEM
>> 1457 help
>> 1458 Choose this option to build a kernel for release 1 or later of the
>> 1459 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1460 MIPS processor are based on a MIPS32 processor. If you know the
>> 1461 specific type of processor in your system, choose those that one
>> 1462 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1463 Release 2 of the MIPS32 architecture is available since several
>> 1464 years so chances are you even have a MIPS32 Release 2 processor
>> 1465 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1466 performance.
>> 1467
>> 1468 config CPU_MIPS32_R2
>> 1469 bool "MIPS32 Release 2"
>> 1470 depends on SYS_HAS_CPU_MIPS32_R2
>> 1471 select CPU_HAS_PREFETCH
>> 1472 select CPU_SUPPORTS_32BIT_KERNEL
>> 1473 select CPU_SUPPORTS_HIGHMEM
>> 1474 select CPU_SUPPORTS_MSA
>> 1475 select HAVE_KVM
>> 1476 help
>> 1477 Choose this option to build a kernel for release 2 or later of the
>> 1478 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1479 MIPS processor are based on a MIPS32 processor. If you know the
>> 1480 specific type of processor in your system, choose those that one
>> 1481 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1482
>> 1483 config CPU_MIPS32_R6
>> 1484 bool "MIPS32 Release 6"
>> 1485 depends on SYS_HAS_CPU_MIPS32_R6
>> 1486 select CPU_HAS_PREFETCH
>> 1487 select CPU_SUPPORTS_32BIT_KERNEL
>> 1488 select CPU_SUPPORTS_HIGHMEM
>> 1489 select CPU_SUPPORTS_MSA
>> 1490 select GENERIC_CSUM
>> 1491 select HAVE_KVM
>> 1492 select MIPS_O32_FP64_SUPPORT
>> 1493 help
>> 1494 Choose this option to build a kernel for release 6 or later of the
>> 1495 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1496 family, are based on a MIPS32r6 processor. If you own an older
>> 1497 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1498
>> 1499 config CPU_MIPS64_R1
>> 1500 bool "MIPS64 Release 1"
>> 1501 depends on SYS_HAS_CPU_MIPS64_R1
>> 1502 select CPU_HAS_PREFETCH
>> 1503 select CPU_SUPPORTS_32BIT_KERNEL
>> 1504 select CPU_SUPPORTS_64BIT_KERNEL
>> 1505 select CPU_SUPPORTS_HIGHMEM
>> 1506 select CPU_SUPPORTS_HUGEPAGES
>> 1507 help
>> 1508 Choose this option to build a kernel for release 1 or later of the
>> 1509 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1510 MIPS processor are based on a MIPS64 processor. If you know the
>> 1511 specific type of processor in your system, choose those that one
>> 1512 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1513 Release 2 of the MIPS64 architecture is available since several
>> 1514 years so chances are you even have a MIPS64 Release 2 processor
>> 1515 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1516 performance.
>> 1517
>> 1518 config CPU_MIPS64_R2
>> 1519 bool "MIPS64 Release 2"
>> 1520 depends on SYS_HAS_CPU_MIPS64_R2
>> 1521 select CPU_HAS_PREFETCH
>> 1522 select CPU_SUPPORTS_32BIT_KERNEL
>> 1523 select CPU_SUPPORTS_64BIT_KERNEL
>> 1524 select CPU_SUPPORTS_HIGHMEM
>> 1525 select CPU_SUPPORTS_HUGEPAGES
>> 1526 select CPU_SUPPORTS_MSA
>> 1527 select HAVE_KVM
>> 1528 help
>> 1529 Choose this option to build a kernel for release 2 or later of the
>> 1530 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1531 MIPS processor are based on a MIPS64 processor. If you know the
>> 1532 specific type of processor in your system, choose those that one
>> 1533 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1534
>> 1535 config CPU_MIPS64_R6
>> 1536 bool "MIPS64 Release 6"
>> 1537 depends on SYS_HAS_CPU_MIPS64_R6
>> 1538 select CPU_HAS_PREFETCH
>> 1539 select CPU_SUPPORTS_32BIT_KERNEL
>> 1540 select CPU_SUPPORTS_64BIT_KERNEL
>> 1541 select CPU_SUPPORTS_HIGHMEM
>> 1542 select CPU_SUPPORTS_MSA
>> 1543 select GENERIC_CSUM
>> 1544 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1545 select HAVE_KVM
>> 1546 help
>> 1547 Choose this option to build a kernel for release 6 or later of the
>> 1548 MIPS64 architecture. New MIPS processors, starting with the Warrior
>> 1549 family, are based on a MIPS64r6 processor. If you own an older
>> 1550 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
>> 1551
>> 1552 config CPU_R3000
>> 1553 bool "R3000"
>> 1554 depends on SYS_HAS_CPU_R3000
>> 1555 select CPU_HAS_WB
>> 1556 select CPU_SUPPORTS_32BIT_KERNEL
>> 1557 select CPU_SUPPORTS_HIGHMEM
>> 1558 help
>> 1559 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1560 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1561 *not* work on R4000 machines and vice versa. However, since most
>> 1562 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1563 might be a safe bet. If the resulting kernel does not work,
>> 1564 try to recompile with R3000.
>> 1565
>> 1566 config CPU_TX39XX
>> 1567 bool "R39XX"
>> 1568 depends on SYS_HAS_CPU_TX39XX
>> 1569 select CPU_SUPPORTS_32BIT_KERNEL
>> 1570
>> 1571 config CPU_VR41XX
>> 1572 bool "R41xx"
>> 1573 depends on SYS_HAS_CPU_VR41XX
>> 1574 select CPU_SUPPORTS_32BIT_KERNEL
>> 1575 select CPU_SUPPORTS_64BIT_KERNEL
>> 1576 help
>> 1577 The options selects support for the NEC VR4100 series of processors.
>> 1578 Only choose this option if you have one of these processors as a
>> 1579 kernel built with this option will not run on any other type of
>> 1580 processor or vice versa.
>> 1581
>> 1582 config CPU_R4300
>> 1583 bool "R4300"
>> 1584 depends on SYS_HAS_CPU_R4300
>> 1585 select CPU_SUPPORTS_32BIT_KERNEL
>> 1586 select CPU_SUPPORTS_64BIT_KERNEL
>> 1587 help
>> 1588 MIPS Technologies R4300-series processors.
>> 1589
>> 1590 config CPU_R4X00
>> 1591 bool "R4x00"
>> 1592 depends on SYS_HAS_CPU_R4X00
>> 1593 select CPU_SUPPORTS_32BIT_KERNEL
>> 1594 select CPU_SUPPORTS_64BIT_KERNEL
>> 1595 select CPU_SUPPORTS_HUGEPAGES
>> 1596 help
>> 1597 MIPS Technologies R4000-series processors other than 4300, including
>> 1598 the R4000, R4400, R4600, and 4700.
>> 1599
>> 1600 config CPU_TX49XX
>> 1601 bool "R49XX"
>> 1602 depends on SYS_HAS_CPU_TX49XX
>> 1603 select CPU_HAS_PREFETCH
>> 1604 select CPU_SUPPORTS_32BIT_KERNEL
>> 1605 select CPU_SUPPORTS_64BIT_KERNEL
>> 1606 select CPU_SUPPORTS_HUGEPAGES
>> 1607
>> 1608 config CPU_R5000
>> 1609 bool "R5000"
>> 1610 depends on SYS_HAS_CPU_R5000
>> 1611 select CPU_SUPPORTS_32BIT_KERNEL
>> 1612 select CPU_SUPPORTS_64BIT_KERNEL
>> 1613 select CPU_SUPPORTS_HUGEPAGES
>> 1614 help
>> 1615 MIPS Technologies R5000-series processors other than the Nevada.
>> 1616
>> 1617 config CPU_R5432
>> 1618 bool "R5432"
>> 1619 depends on SYS_HAS_CPU_R5432
>> 1620 select CPU_SUPPORTS_32BIT_KERNEL
>> 1621 select CPU_SUPPORTS_64BIT_KERNEL
>> 1622 select CPU_SUPPORTS_HUGEPAGES
>> 1623
>> 1624 config CPU_R5500
>> 1625 bool "R5500"
>> 1626 depends on SYS_HAS_CPU_R5500
>> 1627 select CPU_SUPPORTS_32BIT_KERNEL
>> 1628 select CPU_SUPPORTS_64BIT_KERNEL
>> 1629 select CPU_SUPPORTS_HUGEPAGES
>> 1630 help
>> 1631 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1632 instruction set.
>> 1633
>> 1634 config CPU_NEVADA
>> 1635 bool "RM52xx"
>> 1636 depends on SYS_HAS_CPU_NEVADA
>> 1637 select CPU_SUPPORTS_32BIT_KERNEL
>> 1638 select CPU_SUPPORTS_64BIT_KERNEL
>> 1639 select CPU_SUPPORTS_HUGEPAGES
>> 1640 help
>> 1641 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1642
>> 1643 config CPU_R8000
>> 1644 bool "R8000"
>> 1645 depends on SYS_HAS_CPU_R8000
>> 1646 select CPU_HAS_PREFETCH
>> 1647 select CPU_SUPPORTS_64BIT_KERNEL
>> 1648 help
>> 1649 MIPS Technologies R8000 processors. Note these processors are
>> 1650 uncommon and the support for them is incomplete.
>> 1651
>> 1652 config CPU_R10000
>> 1653 bool "R10000"
>> 1654 depends on SYS_HAS_CPU_R10000
>> 1655 select CPU_HAS_PREFETCH
>> 1656 select CPU_SUPPORTS_32BIT_KERNEL
>> 1657 select CPU_SUPPORTS_64BIT_KERNEL
>> 1658 select CPU_SUPPORTS_HIGHMEM
>> 1659 select CPU_SUPPORTS_HUGEPAGES
>> 1660 help
>> 1661 MIPS Technologies R10000-series processors.
>> 1662
>> 1663 config CPU_RM7000
>> 1664 bool "RM7000"
>> 1665 depends on SYS_HAS_CPU_RM7000
>> 1666 select CPU_HAS_PREFETCH
>> 1667 select CPU_SUPPORTS_32BIT_KERNEL
>> 1668 select CPU_SUPPORTS_64BIT_KERNEL
>> 1669 select CPU_SUPPORTS_HIGHMEM
>> 1670 select CPU_SUPPORTS_HUGEPAGES
>> 1671
>> 1672 config CPU_SB1
>> 1673 bool "SB1"
>> 1674 depends on SYS_HAS_CPU_SB1
>> 1675 select CPU_SUPPORTS_32BIT_KERNEL
>> 1676 select CPU_SUPPORTS_64BIT_KERNEL
>> 1677 select CPU_SUPPORTS_HIGHMEM
>> 1678 select CPU_SUPPORTS_HUGEPAGES
>> 1679 select WEAK_ORDERING
>> 1680
>> 1681 config CPU_CAVIUM_OCTEON
>> 1682 bool "Cavium Octeon processor"
>> 1683 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1684 select CPU_HAS_PREFETCH
>> 1685 select CPU_SUPPORTS_64BIT_KERNEL
>> 1686 select WEAK_ORDERING
>> 1687 select CPU_SUPPORTS_HIGHMEM
>> 1688 select CPU_SUPPORTS_HUGEPAGES
>> 1689 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1690 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1691 select MIPS_L1_CACHE_SHIFT_7
>> 1692 select HAVE_KVM
>> 1693 help
>> 1694 The Cavium Octeon processor is a highly integrated chip containing
>> 1695 many ethernet hardware widgets for networking tasks. The processor
>> 1696 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1697 Full details can be found at http://www.caviumnetworks.com.
>> 1698
>> 1699 config CPU_BMIPS
>> 1700 bool "Broadcom BMIPS"
>> 1701 depends on SYS_HAS_CPU_BMIPS
>> 1702 select CPU_MIPS32
>> 1703 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
>> 1704 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
>> 1705 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
>> 1706 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
>> 1707 select CPU_SUPPORTS_32BIT_KERNEL
>> 1708 select DMA_NONCOHERENT
>> 1709 select IRQ_MIPS_CPU
>> 1710 select SWAP_IO_SPACE
>> 1711 select WEAK_ORDERING
>> 1712 select CPU_SUPPORTS_HIGHMEM
>> 1713 select CPU_HAS_PREFETCH
>> 1714 select CPU_SUPPORTS_CPUFREQ
>> 1715 select MIPS_EXTERNAL_TIMER
>> 1716 help
>> 1717 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
>> 1718
>> 1719 config CPU_XLR
>> 1720 bool "Netlogic XLR SoC"
>> 1721 depends on SYS_HAS_CPU_XLR
>> 1722 select CPU_SUPPORTS_32BIT_KERNEL
>> 1723 select CPU_SUPPORTS_64BIT_KERNEL
>> 1724 select CPU_SUPPORTS_HIGHMEM
>> 1725 select CPU_SUPPORTS_HUGEPAGES
>> 1726 select WEAK_ORDERING
>> 1727 select WEAK_REORDERING_BEYOND_LLSC
>> 1728 help
>> 1729 Netlogic Microsystems XLR/XLS processors.
>> 1730
>> 1731 config CPU_XLP
>> 1732 bool "Netlogic XLP SoC"
>> 1733 depends on SYS_HAS_CPU_XLP
>> 1734 select CPU_SUPPORTS_32BIT_KERNEL
>> 1735 select CPU_SUPPORTS_64BIT_KERNEL
>> 1736 select CPU_SUPPORTS_HIGHMEM
>> 1737 select WEAK_ORDERING
>> 1738 select WEAK_REORDERING_BEYOND_LLSC
>> 1739 select CPU_HAS_PREFETCH
>> 1740 select CPU_MIPSR2
>> 1741 select CPU_SUPPORTS_HUGEPAGES
>> 1742 select MIPS_ASID_BITS_VARIABLE
>> 1743 help
>> 1744 Netlogic Microsystems XLP processors.
427 endchoice 1745 endchoice
428 1746
429 config MODULE_SECTIONS !! 1747 config CPU_MIPS32_3_5_FEATURES
>> 1748 bool "MIPS32 Release 3.5 Features"
>> 1749 depends on SYS_HAS_CPU_MIPS32_R3_5
>> 1750 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
>> 1751 help
>> 1752 Choose this option to build a kernel for release 2 or later of the
>> 1753 MIPS32 architecture including features from the 3.5 release such as
>> 1754 support for Enhanced Virtual Addressing (EVA).
>> 1755
>> 1756 config CPU_MIPS32_3_5_EVA
>> 1757 bool "Enhanced Virtual Addressing (EVA)"
>> 1758 depends on CPU_MIPS32_3_5_FEATURES
>> 1759 select EVA
>> 1760 default y
>> 1761 help
>> 1762 Choose this option if you want to enable the Enhanced Virtual
>> 1763 Addressing (EVA) on your MIPS32 core (such as proAptiv).
>> 1764 One of its primary benefits is an increase in the maximum size
>> 1765 of lowmem (up to 3GB). If unsure, say 'N' here.
>> 1766
>> 1767 config CPU_MIPS32_R5_FEATURES
>> 1768 bool "MIPS32 Release 5 Features"
>> 1769 depends on SYS_HAS_CPU_MIPS32_R5
>> 1770 depends on CPU_MIPS32_R2
>> 1771 help
>> 1772 Choose this option to build a kernel for release 2 or later of the
>> 1773 MIPS32 architecture including features from release 5 such as
>> 1774 support for Extended Physical Addressing (XPA).
>> 1775
>> 1776 config CPU_MIPS32_R5_XPA
>> 1777 bool "Extended Physical Addressing (XPA)"
>> 1778 depends on CPU_MIPS32_R5_FEATURES
>> 1779 depends on !EVA
>> 1780 depends on !PAGE_SIZE_4KB
>> 1781 depends on SYS_SUPPORTS_HIGHMEM
>> 1782 select XPA
>> 1783 select HIGHMEM
>> 1784 select PHYS_ADDR_T_64BIT
>> 1785 default n
>> 1786 help
>> 1787 Choose this option if you want to enable the Extended Physical
>> 1788 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
>> 1789 benefit is to increase physical addressing equal to or greater
>> 1790 than 40 bits. Note that this has the side effect of turning on
>> 1791 64-bit addressing which in turn makes the PTEs 64-bit in size.
>> 1792 If unsure, say 'N' here.
>> 1793
>> 1794 if CPU_LOONGSON2F
>> 1795 config CPU_NOP_WORKAROUNDS
430 bool 1796 bool
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 1797
433 config SMP !! 1798 config CPU_JUMP_WORKAROUNDS
434 bool "Symmetric Multi-Processing" !! 1799 bool
>> 1800
>> 1801 config CPU_LOONGSON2F_WORKAROUNDS
>> 1802 bool "Loongson 2F Workarounds"
>> 1803 default y
>> 1804 select CPU_NOP_WORKAROUNDS
>> 1805 select CPU_JUMP_WORKAROUNDS
435 help 1806 help
436 This enables support for systems wit !! 1807 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
437 you say N here, the kernel will run !! 1808 require workarounds. Without workarounds the system may hang
438 multiprocessor machines, but will us !! 1809 unexpectedly. For more information please refer to the gas
439 multiprocessor machine. If you say Y !! 1810 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
440 on many, but not all, single process !! 1811
441 processor machine, the kernel will r !! 1812 Loongson 2F03 and later have fixed these issues and no workarounds
442 here. !! 1813 are needed. The workarounds have no significant side effect on them
>> 1814 but may decrease the performance of the system so this option should
>> 1815 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1816 systems.
443 1817
444 If you don't know what to do here, s !! 1818 If unsure, please say Y.
>> 1819 endif # CPU_LOONGSON2F
445 1820
446 config SCHED_MC !! 1821 config SYS_SUPPORTS_ZBOOT
447 bool "Multi-core scheduler support" !! 1822 bool
448 depends on SMP !! 1823 select HAVE_KERNEL_GZIP
>> 1824 select HAVE_KERNEL_BZIP2
>> 1825 select HAVE_KERNEL_LZ4
>> 1826 select HAVE_KERNEL_LZMA
>> 1827 select HAVE_KERNEL_LZO
>> 1828 select HAVE_KERNEL_XZ
>> 1829
>> 1830 config SYS_SUPPORTS_ZBOOT_UART16550
>> 1831 bool
>> 1832 select SYS_SUPPORTS_ZBOOT
>> 1833
>> 1834 config SYS_SUPPORTS_ZBOOT_UART_PROM
>> 1835 bool
>> 1836 select SYS_SUPPORTS_ZBOOT
>> 1837
>> 1838 config CPU_LOONGSON2
>> 1839 bool
>> 1840 select CPU_SUPPORTS_32BIT_KERNEL
>> 1841 select CPU_SUPPORTS_64BIT_KERNEL
>> 1842 select CPU_SUPPORTS_HIGHMEM
>> 1843 select CPU_SUPPORTS_HUGEPAGES
>> 1844 select ARCH_HAS_PHYS_TO_DMA
>> 1845
>> 1846 config CPU_LOONGSON1
>> 1847 bool
>> 1848 select CPU_MIPS32
>> 1849 select CPU_MIPSR1
>> 1850 select CPU_HAS_PREFETCH
>> 1851 select CPU_SUPPORTS_32BIT_KERNEL
>> 1852 select CPU_SUPPORTS_HIGHMEM
>> 1853 select CPU_SUPPORTS_CPUFREQ
>> 1854
>> 1855 config CPU_BMIPS32_3300
>> 1856 select SMP_UP if SMP
>> 1857 bool
>> 1858
>> 1859 config CPU_BMIPS4350
>> 1860 bool
>> 1861 select SYS_SUPPORTS_SMP
>> 1862 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1863
>> 1864 config CPU_BMIPS4380
>> 1865 bool
>> 1866 select MIPS_L1_CACHE_SHIFT_6
>> 1867 select SYS_SUPPORTS_SMP
>> 1868 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1869 select CPU_HAS_RIXI
>> 1870
>> 1871 config CPU_BMIPS5000
>> 1872 bool
>> 1873 select MIPS_CPU_SCACHE
>> 1874 select MIPS_L1_CACHE_SHIFT_7
>> 1875 select SYS_SUPPORTS_SMP
>> 1876 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1877 select CPU_HAS_RIXI
>> 1878
>> 1879 config SYS_HAS_CPU_LOONGSON3
>> 1880 bool
>> 1881 select CPU_SUPPORTS_CPUFREQ
>> 1882 select CPU_HAS_RIXI
>> 1883
>> 1884 config SYS_HAS_CPU_LOONGSON2E
>> 1885 bool
>> 1886
>> 1887 config SYS_HAS_CPU_LOONGSON2F
>> 1888 bool
>> 1889 select CPU_SUPPORTS_CPUFREQ
>> 1890 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1891 select CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 1892
>> 1893 config SYS_HAS_CPU_LOONGSON1B
>> 1894 bool
>> 1895
>> 1896 config SYS_HAS_CPU_LOONGSON1C
>> 1897 bool
>> 1898
>> 1899 config SYS_HAS_CPU_MIPS32_R1
>> 1900 bool
>> 1901
>> 1902 config SYS_HAS_CPU_MIPS32_R2
>> 1903 bool
>> 1904
>> 1905 config SYS_HAS_CPU_MIPS32_R3_5
>> 1906 bool
>> 1907
>> 1908 config SYS_HAS_CPU_MIPS32_R5
>> 1909 bool
>> 1910
>> 1911 config SYS_HAS_CPU_MIPS32_R6
>> 1912 bool
>> 1913
>> 1914 config SYS_HAS_CPU_MIPS64_R1
>> 1915 bool
>> 1916
>> 1917 config SYS_HAS_CPU_MIPS64_R2
>> 1918 bool
>> 1919
>> 1920 config SYS_HAS_CPU_MIPS64_R6
>> 1921 bool
>> 1922
>> 1923 config SYS_HAS_CPU_R3000
>> 1924 bool
>> 1925
>> 1926 config SYS_HAS_CPU_TX39XX
>> 1927 bool
>> 1928
>> 1929 config SYS_HAS_CPU_VR41XX
>> 1930 bool
>> 1931
>> 1932 config SYS_HAS_CPU_R4300
>> 1933 bool
>> 1934
>> 1935 config SYS_HAS_CPU_R4X00
>> 1936 bool
>> 1937
>> 1938 config SYS_HAS_CPU_TX49XX
>> 1939 bool
>> 1940
>> 1941 config SYS_HAS_CPU_R5000
>> 1942 bool
>> 1943
>> 1944 config SYS_HAS_CPU_R5432
>> 1945 bool
>> 1946
>> 1947 config SYS_HAS_CPU_R5500
>> 1948 bool
>> 1949
>> 1950 config SYS_HAS_CPU_NEVADA
>> 1951 bool
>> 1952
>> 1953 config SYS_HAS_CPU_R8000
>> 1954 bool
>> 1955
>> 1956 config SYS_HAS_CPU_R10000
>> 1957 bool
>> 1958
>> 1959 config SYS_HAS_CPU_RM7000
>> 1960 bool
>> 1961
>> 1962 config SYS_HAS_CPU_SB1
>> 1963 bool
>> 1964
>> 1965 config SYS_HAS_CPU_CAVIUM_OCTEON
>> 1966 bool
>> 1967
>> 1968 config SYS_HAS_CPU_BMIPS
>> 1969 bool
>> 1970
>> 1971 config SYS_HAS_CPU_BMIPS32_3300
>> 1972 bool
>> 1973 select SYS_HAS_CPU_BMIPS
>> 1974
>> 1975 config SYS_HAS_CPU_BMIPS4350
>> 1976 bool
>> 1977 select SYS_HAS_CPU_BMIPS
>> 1978
>> 1979 config SYS_HAS_CPU_BMIPS4380
>> 1980 bool
>> 1981 select SYS_HAS_CPU_BMIPS
>> 1982
>> 1983 config SYS_HAS_CPU_BMIPS5000
>> 1984 bool
>> 1985 select SYS_HAS_CPU_BMIPS
>> 1986
>> 1987 config SYS_HAS_CPU_XLR
>> 1988 bool
>> 1989
>> 1990 config SYS_HAS_CPU_XLP
>> 1991 bool
>> 1992
>> 1993 #
>> 1994 # CPU may reorder R->R, R->W, W->R, W->W
>> 1995 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 1996 #
>> 1997 config WEAK_ORDERING
>> 1998 bool
>> 1999
>> 2000 #
>> 2001 # CPU may reorder reads and writes beyond LL/SC
>> 2002 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 2003 #
>> 2004 config WEAK_REORDERING_BEYOND_LLSC
>> 2005 bool
>> 2006 endmenu
>> 2007
>> 2008 #
>> 2009 # These two indicate any level of the MIPS32 and MIPS64 architecture
>> 2010 #
>> 2011 config CPU_MIPS32
>> 2012 bool
>> 2013 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
>> 2014
>> 2015 config CPU_MIPS64
>> 2016 bool
>> 2017 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
>> 2018
>> 2019 #
>> 2020 # These two indicate the revision of the architecture, either Release 1 or Release 2
>> 2021 #
>> 2022 config CPU_MIPSR1
>> 2023 bool
>> 2024 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
>> 2025
>> 2026 config CPU_MIPSR2
>> 2027 bool
>> 2028 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
>> 2029 select CPU_HAS_RIXI
>> 2030 select MIPS_SPRAM
>> 2031
>> 2032 config CPU_MIPSR6
>> 2033 bool
>> 2034 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
>> 2035 select CPU_HAS_RIXI
>> 2036 select HAVE_ARCH_BITREVERSE
>> 2037 select MIPS_ASID_BITS_VARIABLE
>> 2038 select MIPS_CRC_SUPPORT
>> 2039 select MIPS_SPRAM
>> 2040
>> 2041 config EVA
>> 2042 bool
>> 2043
>> 2044 config XPA
>> 2045 bool
>> 2046
>> 2047 config SYS_SUPPORTS_32BIT_KERNEL
>> 2048 bool
>> 2049 config SYS_SUPPORTS_64BIT_KERNEL
>> 2050 bool
>> 2051 config CPU_SUPPORTS_32BIT_KERNEL
>> 2052 bool
>> 2053 config CPU_SUPPORTS_64BIT_KERNEL
>> 2054 bool
>> 2055 config CPU_SUPPORTS_CPUFREQ
>> 2056 bool
>> 2057 config CPU_SUPPORTS_ADDRWINCFG
>> 2058 bool
>> 2059 config CPU_SUPPORTS_HUGEPAGES
>> 2060 bool
>> 2061 config CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 2062 bool
>> 2063 config MIPS_PGD_C0_CONTEXT
>> 2064 bool
>> 2065 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
>> 2066
>> 2067 #
>> 2068 # Set to y for ptrace access to watch registers.
>> 2069 #
>> 2070 config HARDWARE_WATCHPOINTS
>> 2071 bool
>> 2072 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
>> 2073
>> 2074 menu "Kernel type"
>> 2075
>> 2076 choice
>> 2077 prompt "Kernel code model"
449 help 2078 help
450 Multi-core scheduler support improve !! 2079 You should only select this option if you have a workload that
451 making when dealing with multi-core !! 2080 actually benefits from 64-bit processing or if your machine has
452 increased overhead in some places. I !! 2081 large memory. You will only be presented a single option in this
>> 2082 menu if your system does not support both 32-bit and 64-bit kernels.
453 2083
454 config NR_CPUS !! 2084 config 32BIT
455 int "Maximum number of CPUs (2-512)" !! 2085 bool "32-bit kernel"
456 depends on SMP !! 2086 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
457 range 2 512 if !RISCV_SBI_V01 !! 2087 select TRAD_SIGNALS
458 range 2 32 if RISCV_SBI_V01 && 32BIT !! 2088 help
459 range 2 64 if RISCV_SBI_V01 && 64BIT !! 2089 Select this option if you want to build a 32-bit kernel.
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 2090
463 config HOTPLUG_CPU !! 2091 config 64BIT
464 bool "Support for hot-pluggable CPUs" !! 2092 bool "64-bit kernel"
465 depends on SMP !! 2093 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
466 select GENERIC_IRQ_MIGRATION <<
467 help 2094 help
>> 2095 Select this option if you want to build a 64-bit kernel.
468 2096
469 Say Y here to experiment with turnin !! 2097 endchoice
470 can be controlled through /sys/devic <<
471 2098
472 Say N if you want to disable CPU hot !! 2099 config KVM_GUEST
>> 2100 bool "KVM Guest Kernel"
>> 2101 depends on BROKEN_ON_SMP
>> 2102 help
>> 2103 Select this option if building a guest kernel for KVM (Trap & Emulate)
>> 2104 mode.
>> 2105
>> 2106 config KVM_GUEST_TIMER_FREQ
>> 2107 int "Count/Compare Timer Frequency (MHz)"
>> 2108 depends on KVM_GUEST
>> 2109 default 100
>> 2110 help
>> 2111 Set this to non-zero if building a guest kernel for KVM to skip RTC
>> 2112 emulation when determining guest CPU Frequency. Instead, the guest's
>> 2113 timer frequency is specified directly.
>> 2114
>> 2115 config MIPS_VA_BITS_48
>> 2116 bool "48 bits virtual memory"
>> 2117 depends on 64BIT
>> 2118 help
>> 2119 Support a maximum at least 48 bits of application virtual
>> 2120 memory. Default is 40 bits or less, depending on the CPU.
>> 2121 For page sizes 16k and above, this option results in a small
>> 2122 memory overhead for page tables. For 4k page size, a fourth
>> 2123 level of page tables is added which imposes both a memory
>> 2124 overhead as well as slower TLB fault handling.
>> 2125
>> 2126 If unsure, say N.
473 2127
474 choice 2128 choice
475 prompt "CPU Tuning" !! 2129 prompt "Kernel page size"
476 default TUNE_GENERIC !! 2130 default PAGE_SIZE_4KB
477 2131
478 config TUNE_GENERIC !! 2132 config PAGE_SIZE_4KB
479 bool "generic" !! 2133 bool "4kB"
>> 2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
>> 2135 help
>> 2136 This option select the standard 4kB Linux page size. On some
>> 2137 R3000-family processors this is the only available page size. Using
>> 2138 4kB page size will minimize memory consumption and is therefore
>> 2139 recommended for low memory systems.
>> 2140
>> 2141 config PAGE_SIZE_8KB
>> 2142 bool "8kB"
>> 2143 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
>> 2144 depends on !MIPS_VA_BITS_48
>> 2145 help
>> 2146 Using 8kB page size will result in higher performance kernel at
>> 2147 the price of higher memory consumption. This option is available
>> 2148 only on R8000 and cnMIPS processors. Note that you will need a
>> 2149 suitable Linux distribution to support this.
>> 2150
>> 2151 config PAGE_SIZE_16KB
>> 2152 bool "16kB"
>> 2153 depends on !CPU_R3000 && !CPU_TX39XX
>> 2154 help
>> 2155 Using 16kB page size will result in higher performance kernel at
>> 2156 the price of higher memory consumption. This option is available on
>> 2157 all non-R3000 family processors. Note that you will need a suitable
>> 2158 Linux distribution to support this.
>> 2159
>> 2160 config PAGE_SIZE_32KB
>> 2161 bool "32kB"
>> 2162 depends on CPU_CAVIUM_OCTEON
>> 2163 depends on !MIPS_VA_BITS_48
>> 2164 help
>> 2165 Using 32kB page size will result in higher performance kernel at
>> 2166 the price of higher memory consumption. This option is available
>> 2167 only on cnMIPS cores. Note that you will need a suitable Linux
>> 2168 distribution to support this.
>> 2169
>> 2170 config PAGE_SIZE_64KB
>> 2171 bool "64kB"
>> 2172 depends on !CPU_R3000 && !CPU_TX39XX
>> 2173 help
>> 2174 Using 64kB page size will result in higher performance kernel at
>> 2175 the price of higher memory consumption. This option is available on
>> 2176 all non-R3000 family processor. Not that at the time of this
>> 2177 writing this option is still high experimental.
480 2178
481 endchoice 2179 endchoice
482 2180
483 # Common NUMA Features !! 2181 config FORCE_MAX_ZONEORDER
484 config NUMA !! 2182 int "Maximum zone order"
485 bool "NUMA Memory Allocation and Sched !! 2183 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
486 depends on SMP && MMU !! 2184 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
487 select ARCH_SUPPORTS_NUMA_BALANCING !! 2185 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
488 select GENERIC_ARCH_NUMA !! 2186 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
489 select HAVE_SETUP_PER_CPU_AREA !! 2187 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
490 select NEED_PER_CPU_EMBED_FIRST_CHUNK !! 2188 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
491 select NEED_PER_CPU_PAGE_FIRST_CHUNK !! 2189 range 11 64
492 select OF_NUMA !! 2190 default "11"
493 select USE_PERCPU_NUMA_NODE_ID !! 2191 help
>> 2192 The kernel memory allocator divides physically contiguous memory
>> 2193 blocks into "zones", where each zone is a power of two number of
>> 2194 pages. This option selects the largest power of two that the kernel
>> 2195 keeps in the memory allocator. If you need to allocate very large
>> 2196 blocks of physically contiguous memory, then you may need to
>> 2197 increase this value.
>> 2198
>> 2199 This config option is actually maximum order plus one. For example,
>> 2200 a value of 11 means that the largest free memory block is 2^10 pages.
>> 2201
>> 2202 The page size is not necessarily 4KB. Keep this in mind
>> 2203 when choosing a value for this option.
>> 2204
>> 2205 config BOARD_SCACHE
>> 2206 bool
>> 2207
>> 2208 config IP22_CPU_SCACHE
>> 2209 bool
>> 2210 select BOARD_SCACHE
>> 2211
>> 2212 #
>> 2213 # Support for a MIPS32 / MIPS64 style S-caches
>> 2214 #
>> 2215 config MIPS_CPU_SCACHE
>> 2216 bool
>> 2217 select BOARD_SCACHE
>> 2218
>> 2219 config R5000_CPU_SCACHE
>> 2220 bool
>> 2221 select BOARD_SCACHE
>> 2222
>> 2223 config RM7000_CPU_SCACHE
>> 2224 bool
>> 2225 select BOARD_SCACHE
>> 2226
>> 2227 config SIBYTE_DMA_PAGEOPS
>> 2228 bool "Use DMA to clear/copy pages"
>> 2229 depends on CPU_SB1
494 help 2230 help
495 Enable NUMA (Non-Uniform Memory Acce !! 2231 Instead of using the CPU to zero and copy pages, use a Data Mover
>> 2232 channel. These DMA channels are otherwise unused by the standard
>> 2233 SiByte Linux port. Seems to give a small performance benefit.
496 2234
497 The kernel will try to allocate memo !! 2235 config CPU_HAS_PREFETCH
498 local memory of the CPU and add some !! 2236 bool
499 2237
500 config NODES_SHIFT !! 2238 config CPU_GENERIC_DUMP_TLB
501 int "Maximum NUMA Nodes (as a power of !! 2239 bool
502 range 1 10 !! 2240 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
503 default "2" !! 2241
504 depends on NUMA !! 2242 config CPU_R4K_FPU
>> 2243 bool
>> 2244 default y if !(CPU_R3000 || CPU_TX39XX)
>> 2245
>> 2246 config CPU_R4K_CACHE_TLB
>> 2247 bool
>> 2248 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
>> 2249
>> 2250 config MIPS_MT_SMP
>> 2251 bool "MIPS MT SMP support (1 TC on each available VPE)"
>> 2252 default y
>> 2253 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
>> 2254 select CPU_MIPSR2_IRQ_VI
>> 2255 select CPU_MIPSR2_IRQ_EI
>> 2256 select SYNC_R4K
>> 2257 select MIPS_MT
>> 2258 select SMP
>> 2259 select SMP_UP
>> 2260 select SYS_SUPPORTS_SMP
>> 2261 select SYS_SUPPORTS_SCHED_SMT
>> 2262 select MIPS_PERF_SHARED_TC_COUNTERS
>> 2263 help
>> 2264 This is a kernel model which is known as SMVP. This is supported
>> 2265 on cores with the MT ASE and uses the available VPEs to implement
>> 2266 virtual processors which supports SMP. This is equivalent to the
>> 2267 Intel Hyperthreading feature. For further information go to
>> 2268 <http://www.imgtec.com/mips/mips-multithreading.asp>.
>> 2269
>> 2270 config MIPS_MT
>> 2271 bool
>> 2272
>> 2273 config SCHED_SMT
>> 2274 bool "SMT (multithreading) scheduler support"
>> 2275 depends on SYS_SUPPORTS_SCHED_SMT
>> 2276 default n
505 help 2277 help
506 Specify the maximum number of NUMA N !! 2278 SMT scheduler support improves the CPU scheduler's decision making
507 system. Increases memory reserved t !! 2279 when dealing with MIPS MT enabled cores at a cost of slightly
>> 2280 increased overhead in some places. If unsure say N here.
508 2281
509 config RISCV_ALTERNATIVE !! 2282 config SYS_SUPPORTS_SCHED_SMT
510 bool 2283 bool
511 depends on !XIP_KERNEL !! 2284
>> 2285 config SYS_SUPPORTS_MULTITHREADING
>> 2286 bool
>> 2287
>> 2288 config MIPS_MT_FPAFF
>> 2289 bool "Dynamic FPU affinity for FP-intensive threads"
>> 2290 default y
>> 2291 depends on MIPS_MT_SMP
>> 2292
>> 2293 config MIPSR2_TO_R6_EMULATOR
>> 2294 bool "MIPS R2-to-R6 emulator"
>> 2295 depends on CPU_MIPSR6
>> 2296 default y
512 help 2297 help
513 This Kconfig allows the kernel to au !! 2298 Choose this option if you want to run non-R6 MIPS userland code.
514 erratum or cpufeature required by th !! 2299 Even if you say 'Y' here, the emulator will still be disabled by
515 time. The code patching overhead is !! 2300 default. You can enable it using the 'mipsr2emu' kernel option.
516 once at boot and once on each module !! 2301 The only reason this is a build-time option is to save ~14K from the
>> 2302 final kernel image.
517 2303
518 config RISCV_ALTERNATIVE_EARLY !! 2304 config SYS_SUPPORTS_VPE_LOADER
519 bool 2305 bool
520 depends on RISCV_ALTERNATIVE !! 2306 depends on SYS_SUPPORTS_MULTITHREADING
521 help 2307 help
522 Allows early patching of the kernel !! 2308 Indicates that the platform supports the VPE loader, and provides
>> 2309 physical_memsize.
523 2310
524 config RISCV_ISA_C !! 2311 config MIPS_VPE_LOADER
525 bool "Emit compressed instructions whe !! 2312 bool "VPE loader support."
526 default y !! 2313 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
>> 2314 select CPU_MIPSR2_IRQ_VI
>> 2315 select CPU_MIPSR2_IRQ_EI
>> 2316 select MIPS_MT
527 help 2317 help
528 Adds "C" to the ISA subsets that the !! 2318 Includes a loader for loading an elf relocatable object
529 when building Linux, which results i !! 2319 onto another VPE and running it.
530 Linux binary. !! 2320
>> 2321 config MIPS_VPE_LOADER_CMP
>> 2322 bool
>> 2323 default "y"
>> 2324 depends on MIPS_VPE_LOADER && MIPS_CMP
531 2325
532 If you don't know what to do here, s !! 2326 config MIPS_VPE_LOADER_MT
>> 2327 bool
>> 2328 default "y"
>> 2329 depends on MIPS_VPE_LOADER && !MIPS_CMP
533 2330
534 config RISCV_ISA_SVNAPOT !! 2331 config MIPS_VPE_LOADER_TOM
535 bool "Svnapot extension support for su !! 2332 bool "Load VPE program into memory hidden from linux"
536 depends on 64BIT && MMU !! 2333 depends on MIPS_VPE_LOADER
537 depends on RISCV_ALTERNATIVE <<
538 default y 2334 default y
539 help 2335 help
540 Allow kernel to detect the Svnapot I !! 2336 The loader can use memory that is present but has been hidden from
541 time and enable its usage. !! 2337 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2338 you to ensure the amount you put in the option and the space your
>> 2339 program requires is less or equal to the amount physically present.
542 2340
543 The Svnapot extension is used to mar !! 2341 config MIPS_VPE_APSP_API
544 of contiguous virtual-to-physical tr !! 2342 bool "Enable support for AP/SP API (RTLX)"
545 aligned power-of-2 (NAPOT) granulari !! 2343 depends on MIPS_VPE_LOADER
546 size. When HUGETLBFS is also selecte <<
547 allocates some memory for each NAPOT <<
548 When optimizing for low memory consu <<
549 the Svnapot extension, it may be bet <<
550 2344
551 If you don't know what to do here, s !! 2345 config MIPS_VPE_APSP_API_CMP
>> 2346 bool
>> 2347 default "y"
>> 2348 depends on MIPS_VPE_APSP_API && MIPS_CMP
552 2349
553 config RISCV_ISA_SVPBMT !! 2350 config MIPS_VPE_APSP_API_MT
554 bool "Svpbmt extension support for sup !! 2351 bool
555 depends on 64BIT && MMU !! 2352 default "y"
556 depends on RISCV_ALTERNATIVE !! 2353 depends on MIPS_VPE_APSP_API && !MIPS_CMP
557 default y !! 2354
>> 2355 config MIPS_CMP
>> 2356 bool "MIPS CMP framework support (DEPRECATED)"
>> 2357 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
>> 2358 select SMP
>> 2359 select SYNC_R4K
>> 2360 select SYS_SUPPORTS_SMP
>> 2361 select WEAK_ORDERING
>> 2362 default n
558 help 2363 help
559 Adds support to dynamically detect !! 2364 Select this if you are using a bootloader which implements the "CMP
560 ISA-extension (Supervisor-mode: pag !! 2365 framework" protocol (ie. YAMON) and want your kernel to make use of
561 enable its usage. !! 2366 its ability to start secondary CPUs.
>> 2367
>> 2368 Unless you have a specific need, you should use CONFIG_MIPS_CPS
>> 2369 instead of this.
>> 2370
>> 2371 config MIPS_CPS
>> 2372 bool "MIPS Coherent Processing System support"
>> 2373 depends on SYS_SUPPORTS_MIPS_CPS
>> 2374 select MIPS_CM
>> 2375 select MIPS_CPS_PM if HOTPLUG_CPU
>> 2376 select SMP
>> 2377 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
>> 2378 select SYS_SUPPORTS_HOTPLUG_CPU
>> 2379 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
>> 2380 select SYS_SUPPORTS_SMP
>> 2381 select WEAK_ORDERING
>> 2382 help
>> 2383 Select this if you wish to run an SMP kernel across multiple cores
>> 2384 within a MIPS Coherent Processing System. When this option is
>> 2385 enabled the kernel will probe for other cores and boot them with
>> 2386 no external assistance. It is safe to enable this when hardware
>> 2387 support is unavailable.
562 2388
563 The memory type for a page contains !! 2389 config MIPS_CPS_PM
564 that indicate the cacheability, ide !! 2390 depends on MIPS_CPS
565 properties for access to that page. !! 2391 bool
566 2392
567 The Svpbmt extension is only availa !! 2393 config MIPS_CM
>> 2394 bool
>> 2395 select MIPS_CPC
568 2396
569 If you don't know what to do here, !! 2397 config MIPS_CPC
>> 2398 bool
570 2399
571 config TOOLCHAIN_HAS_V !! 2400 config SB1_PASS_2_WORKAROUNDS
572 bool 2401 bool
>> 2402 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
573 default y 2403 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 2404
579 config RISCV_ISA_V !! 2405 config SB1_PASS_2_1_WORKAROUNDS
580 bool "VECTOR extension support" !! 2406 bool
581 depends on TOOLCHAIN_HAS_V !! 2407 depends on CPU_SB1 && CPU_SB1_PASS_2
582 depends on FPU <<
583 select DYNAMIC_SIGFRAME <<
584 default y 2408 default y
585 help <<
586 Say N here if you want to disable al <<
587 in the kernel. <<
588 2409
589 If you don't know what to do here, s <<
590 2410
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 2411 choice
592 bool "Enable userspace Vector by defau !! 2412 prompt "SmartMIPS or microMIPS ASE support"
593 depends on RISCV_ISA_V !! 2413
594 default y !! 2414 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
>> 2415 bool "None"
595 help 2416 help
596 Say Y here if you want to enable Vec !! 2417 Select this if you want neither microMIPS nor SmartMIPS support
597 Otherwise, userspace has to make exp <<
598 Vector, or enable it via the sysctl <<
599 2418
600 If you don't know what to do here, s !! 2419 config CPU_HAS_SMARTMIPS
>> 2420 depends on SYS_SUPPORTS_SMARTMIPS
>> 2421 bool "SmartMIPS"
>> 2422 help
>> 2423 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2424 increased security at both hardware and software level for
>> 2425 smartcards. Enabling this option will allow proper use of the
>> 2426 SmartMIPS instructions by Linux applications. However a kernel with
>> 2427 this option will not work on a MIPS core without SmartMIPS core. If
>> 2428 you don't know you probably don't have SmartMIPS and should say N
>> 2429 here.
601 2430
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 2431 config CPU_MICROMIPS
603 int "Threshold size for vectorized use !! 2432 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
604 depends on RISCV_ISA_V !! 2433 bool "microMIPS"
605 default 768 <<
606 help 2434 help
607 Prefer using vectorized copy_to_user !! 2435 When this option is enabled the kernel will be built using the
608 workload size exceeds this value. !! 2436 microMIPS ISA
609 2437
610 config RISCV_ISA_V_PREEMPTIVE !! 2438 endchoice
611 bool "Run kernel-mode Vector with kern <<
612 depends on PREEMPTION <<
613 depends on RISCV_ISA_V <<
614 default y <<
615 help <<
616 Usually, in-kernel SIMD routines are <<
617 Functions which envoke long running <<
618 vector unit to prevent blocking othe <<
619 2439
620 This config allows kernel to run SIM !! 2440 config CPU_HAS_MSA
621 preemption. Enabling this config wil !! 2441 bool "Support for the MIPS SIMD Architecture"
622 consumption due to the allocation of !! 2442 depends on CPU_SUPPORTS_MSA
>> 2443 depends on 64BIT || MIPS_O32_FP64_SUPPORT
>> 2444 help
>> 2445 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
>> 2446 and a set of SIMD instructions to operate on them. When this option
>> 2447 is enabled the kernel will support allocating & switching MSA
>> 2448 vector register contexts. If you know that your kernel will only be
>> 2449 running on CPUs which do not support MSA or that your userland will
>> 2450 not be making use of it then you may wish to say N here to reduce
>> 2451 the size & complexity of your kernel.
623 2452
624 config RISCV_ISA_ZAWRS !! 2453 If unsure, say Y.
625 bool "Zawrs extension support for more <<
626 depends on RISCV_ALTERNATIVE <<
627 default y <<
628 help <<
629 The Zawrs extension defines instruct <<
630 which allow a hart to enter a low-po <<
631 hypervisor while waiting on a store <<
632 use of these instructions in the ker <<
633 detected at boot. <<
634 2454
635 If you don't know what to do here, s !! 2455 config CPU_HAS_WB
>> 2456 bool
636 2457
637 config TOOLCHAIN_HAS_ZBB !! 2458 config XKS01
>> 2459 bool
>> 2460
>> 2461 config CPU_HAS_RIXI
638 bool 2462 bool
639 default y <<
640 depends on !64BIT || $(cc-option,-mabi <<
641 depends on !32BIT || $(cc-option,-mabi <<
642 depends on LLD_VERSION >= 150000 || LD <<
643 depends on AS_HAS_OPTION_ARCH <<
644 2463
645 # This symbol indicates that the toolchain sup !! 2464 #
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 2465 # Vectored interrupt mode is an R2 feature
647 # binutils added all except Zvkb, then added Z !! 2466 #
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO !! 2467 config CPU_MIPSR2_IRQ_VI
649 def_bool $(as-instr, .option arch$(com !! 2468 bool
650 depends on AS_HAS_OPTION_ARCH <<
651 2469
652 config RISCV_ISA_ZBA !! 2470 #
653 bool "Zba extension support for bit ma !! 2471 # Extended interrupt mode is an R2 feature
>> 2472 #
>> 2473 config CPU_MIPSR2_IRQ_EI
>> 2474 bool
>> 2475
>> 2476 config CPU_HAS_SYNC
>> 2477 bool
>> 2478 depends on !CPU_R3000
654 default y 2479 default y
655 help <<
656 Add support for enabling optimisati <<
657 extension is detected at boot. <<
658 2480
659 The Zba extension provides instruct !! 2481 #
660 of addresses that index into arrays !! 2482 # CPU non-features
>> 2483 #
>> 2484 config CPU_DADDI_WORKAROUNDS
>> 2485 bool
661 2486
662 If you don't know what to do here, !! 2487 config CPU_R4000_WORKAROUNDS
>> 2488 bool
>> 2489 select CPU_R4400_WORKAROUNDS
663 2490
664 config RISCV_ISA_ZBB !! 2491 config CPU_R4400_WORKAROUNDS
665 bool "Zbb extension support for bit ma !! 2492 bool
666 depends on TOOLCHAIN_HAS_ZBB <<
667 depends on RISCV_ALTERNATIVE <<
668 default y <<
669 help <<
670 Adds support to dynamically detect <<
671 extension (basic bit manipulation) <<
672 2493
673 The Zbb extension provides instruct !! 2494 config MIPS_ASID_SHIFT
674 of bit-specific operations (count b !! 2495 int
675 bitrotation, etc). !! 2496 default 6 if CPU_R3000 || CPU_TX39XX
>> 2497 default 4 if CPU_R8000
>> 2498 default 0
676 2499
677 If you don't know what to do here, !! 2500 config MIPS_ASID_BITS
>> 2501 int
>> 2502 default 0 if MIPS_ASID_BITS_VARIABLE
>> 2503 default 6 if CPU_R3000 || CPU_TX39XX
>> 2504 default 8
678 2505
679 config TOOLCHAIN_HAS_ZBC !! 2506 config MIPS_ASID_BITS_VARIABLE
680 bool 2507 bool
681 default y <<
682 depends on !64BIT || $(cc-option,-mabi <<
683 depends on !32BIT || $(cc-option,-mabi <<
684 depends on LLD_VERSION >= 150000 || LD <<
685 depends on AS_HAS_OPTION_ARCH <<
686 2508
687 config RISCV_ISA_ZBC !! 2509 config MIPS_CRC_SUPPORT
688 bool "Zbc extension support for carry- !! 2510 bool
689 depends on TOOLCHAIN_HAS_ZBC <<
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y <<
693 help <<
694 Adds support to dynamically detect <<
695 extension (carry-less multiplicatio <<
696 2511
697 The Zbc extension could accelerate !! 2512 #
698 calculations. !! 2513 # - Highmem only makes sense for the 32-bit kernel.
>> 2514 # - The current highmem code will only work properly on physically indexed
>> 2515 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2516 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2517 # moment we protect the user and offer the highmem option only on machines
>> 2518 # where it's known to be safe. This will not offer highmem on a few systems
>> 2519 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2520 # indexed CPUs but we're playing safe.
>> 2521 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2522 # know they might have memory configurations that could make use of highmem
>> 2523 # support.
>> 2524 #
>> 2525 config HIGHMEM
>> 2526 bool "High Memory Support"
>> 2527 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
699 2528
700 If you don't know what to do here, !! 2529 config CPU_SUPPORTS_HIGHMEM
>> 2530 bool
701 2531
702 config RISCV_ISA_ZICBOM !! 2532 config SYS_SUPPORTS_HIGHMEM
703 bool "Zicbom extension support for non !! 2533 bool
704 depends on MMU <<
705 depends on RISCV_ALTERNATIVE <<
706 default y <<
707 select RISCV_DMA_NONCOHERENT <<
708 select DMA_DIRECT_REMAP <<
709 help <<
710 Adds support to dynamically detect <<
711 extension (Cache Block Management O <<
712 usage. <<
713 2534
714 The Zicbom extension can be used to !! 2535 config SYS_SUPPORTS_SMARTMIPS
715 non-coherent DMA support on devices !! 2536 bool
716 2537
717 If you don't know what to do here, !! 2538 config SYS_SUPPORTS_MICROMIPS
>> 2539 bool
718 2540
719 config RISCV_ISA_ZICBOZ !! 2541 config SYS_SUPPORTS_MIPS16
720 bool "Zicboz extension support for fas !! 2542 bool
721 depends on RISCV_ALTERNATIVE <<
722 default y <<
723 help 2543 help
724 Enable the use of the Zicboz extens !! 2544 This option must be set if a kernel might be executed on a MIPS16-
725 when available. !! 2545 enabled CPU even if MIPS16 is not actually being used. In other
726 !! 2546 words, it makes the kernel MIPS16-tolerant.
727 The Zicboz extension is used for fa <<
728 2547
729 If you don't know what to do here, !! 2548 config CPU_SUPPORTS_MSA
>> 2549 bool
730 2550
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 2551 config ARCH_FLATMEM_ENABLE
732 def_bool y 2552 def_bool y
733 # https://sourceware.org/git/?p=binuti !! 2553 depends on !NUMA && !CPU_LOONGSON2
734 # https://gcc.gnu.org/git/?p=gcc.git;a <<
735 depends on AS_IS_GNU && AS_VERSION >= <<
736 help <<
737 Binutils-2.38 and GCC-12.1.0 bumped <<
738 20191213 version, which moves some i <<
739 the Zicsr and Zifencei extensions. T <<
740 Zicsr and Zifencei when binutils >= <<
741 and Zifencei are supported in binuti <<
742 To make life easier, and avoid forci <<
743 newer ISA spec to version 2.2, relax <<
744 For clang < 17 or GCC < 11.3.0, for <<
745 special treatment, this is dealt wit <<
746 2554
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 2555 config ARCH_DISCONTIGMEM_ENABLE
748 def_bool y !! 2556 bool
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 2557 default y if SGI_IP27
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 2558 help
754 Certain versions of clang and GCC do !! 2559 Say Y to support efficient handling of discontiguous physical memory,
755 -march. This option causes an older !! 2560 for architectures which are either NUMA (Non-Uniform Memory Access)
756 versions of clang and GCC to be pass !! 2561 or have huge holes in the physical address space for other reasons.
757 as passing zicsr and zifencei to -ma !! 2562 See <file:Documentation/vm/numa.rst> for more.
758 2563
759 config FPU !! 2564 config ARCH_SPARSEMEM_ENABLE
760 bool "FPU support" !! 2565 bool
761 default y !! 2566 select SPARSEMEM_STATIC
>> 2567
>> 2568 config NUMA
>> 2569 bool "NUMA Support"
>> 2570 depends on SYS_SUPPORTS_NUMA
762 help 2571 help
763 Say N here if you want to disable al !! 2572 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
764 in the kernel. !! 2573 Access). This option improves performance on systems with more
>> 2574 than two nodes; on two node systems it is generally better to
>> 2575 leave it disabled; on single node systems disable this option
>> 2576 disabled.
765 2577
766 If you don't know what to do here, s !! 2578 config SYS_SUPPORTS_NUMA
>> 2579 bool
767 2580
768 config IRQ_STACKS !! 2581 config RELOCATABLE
769 bool "Independent irq & softirq stacks !! 2582 bool "Relocatable kernel"
770 default y !! 2583 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 2584 help
774 Add independent irq & softirq stacks !! 2585 This builds a kernel image that retains relocation information
775 overflows. We may save some memory f !! 2586 so it can be loaded someplace besides the default 1MB.
>> 2587 The relocations make the kernel binary about 15% larger,
>> 2588 but are discarded at runtime
>> 2589
>> 2590 config RELOCATION_TABLE_SIZE
>> 2591 hex "Relocation table size"
>> 2592 depends on RELOCATABLE
>> 2593 range 0x0 0x01000000
>> 2594 default "0x00100000"
>> 2595 ---help---
>> 2596 A table of relocation data will be appended to the kernel binary
>> 2597 and parsed at boot to fix up the relocated kernel.
776 2598
777 config THREAD_SIZE_ORDER !! 2599 This option allows the amount of space reserved for the table to be
778 int "Kernel stack size (in power-of-tw !! 2600 adjusted, although the default of 1Mb should be ok in most cases.
779 range 0 4 !! 2601
780 default 1 if 32BIT !! 2602 The build will fail and a valid size suggested if this is too small.
781 default 2 !! 2603
>> 2604 If unsure, leave at the default value.
>> 2605
>> 2606 config RANDOMIZE_BASE
>> 2607 bool "Randomize the address of the kernel image"
>> 2608 depends on RELOCATABLE
>> 2609 ---help---
>> 2610 Randomizes the physical and virtual address at which the
>> 2611 kernel image is loaded, as a security feature that
>> 2612 deters exploit attempts relying on knowledge of the location
>> 2613 of kernel internals.
>> 2614
>> 2615 Entropy is generated using any coprocessor 0 registers available.
>> 2616
>> 2617 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
>> 2618
>> 2619 If unsure, say N.
>> 2620
>> 2621 config RANDOMIZE_BASE_MAX_OFFSET
>> 2622 hex "Maximum kASLR offset" if EXPERT
>> 2623 depends on RANDOMIZE_BASE
>> 2624 range 0x0 0x40000000 if EVA || 64BIT
>> 2625 range 0x0 0x08000000
>> 2626 default "0x01000000"
>> 2627 ---help---
>> 2628 When kASLR is active, this provides the maximum offset that will
>> 2629 be applied to the kernel image. It should be set according to the
>> 2630 amount of physical RAM available in the target system minus
>> 2631 PHYSICAL_START and must be a power of 2.
>> 2632
>> 2633 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
>> 2634 EVA or 64-bit. The default is 16Mb.
>> 2635
>> 2636 config NODES_SHIFT
>> 2637 int
>> 2638 default "6"
>> 2639 depends on NEED_MULTIPLE_NODES
>> 2640
>> 2641 config HW_PERF_EVENTS
>> 2642 bool "Enable hardware performance counter support for perf events"
>> 2643 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
>> 2644 default y
782 help 2645 help
783 Specify the Pages of thread stack si !! 2646 Enable hardware performance counter support for perf events. If
784 affects irq stack size, which is equ !! 2647 disabled, perf events will use software events only.
785 2648
786 config RISCV_MISALIGNED !! 2649 config SMP
787 bool !! 2650 bool "Multi-Processing support"
788 select SYSCTL_ARCH_UNALIGN_ALLOW !! 2651 depends on SYS_SUPPORTS_SMP
789 help 2652 help
790 Embed support for emulating misalign !! 2653 This enables support for systems with more than one CPU. If you have
>> 2654 a system with only one CPU, say N. If you have a system with more
>> 2655 than one CPU, say Y.
>> 2656
>> 2657 If you say N here, the kernel will run on uni- and multiprocessor
>> 2658 machines, but will use only one CPU of a multiprocessor machine. If
>> 2659 you say Y here, the kernel will run on many, but not all,
>> 2660 uniprocessor machines. On a uniprocessor machine, the kernel
>> 2661 will run faster if you say N here.
791 2662
792 choice !! 2663 People using multiprocessor machines who say Y here should also say
793 prompt "Unaligned Accesses Support" !! 2664 Y to "Enhanced Real Time Clock Support", below.
794 default RISCV_PROBE_UNALIGNED_ACCESS !! 2665
>> 2666 See also the SMP-HOWTO available at
>> 2667 <http://www.tldp.org/docs.html#howto>.
>> 2668
>> 2669 If you don't know what to do here, say N.
>> 2670
>> 2671 config HOTPLUG_CPU
>> 2672 bool "Support for hot-pluggable CPUs"
>> 2673 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
795 help 2674 help
796 This determines the level of support !! 2675 Say Y here to allow turning CPUs off and on. CPUs can be
797 information is used by the kernel to !! 2676 controlled through /sys/devices/system/cpu.
798 exposed to user space via the hwprob !! 2677 (Note: power management support will enable this option
799 probed at boot by default. !! 2678 automatically on SMP systems. )
800 !! 2679 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 2680
841 endchoice !! 2681 config SMP_UP
>> 2682 bool
842 2683
843 source "arch/riscv/Kconfig.vendor" !! 2684 config SYS_SUPPORTS_MIPS_CMP
>> 2685 bool
844 2686
845 endmenu # "Platform type" !! 2687 config SYS_SUPPORTS_MIPS_CPS
>> 2688 bool
846 2689
847 menu "Kernel features" !! 2690 config SYS_SUPPORTS_SMP
>> 2691 bool
848 2692
849 source "kernel/Kconfig.hz" !! 2693 config NR_CPUS_DEFAULT_4
>> 2694 bool
850 2695
851 config RISCV_SBI_V01 !! 2696 config NR_CPUS_DEFAULT_8
852 bool "SBI v0.1 support" !! 2697 bool
853 depends on RISCV_SBI <<
854 help <<
855 This config allows kernel to use SBI <<
856 deprecated in future once legacy M-m <<
857 2698
858 config RISCV_BOOT_SPINWAIT !! 2699 config NR_CPUS_DEFAULT_16
859 bool "Spinwait booting method" !! 2700 bool
>> 2701
>> 2702 config NR_CPUS_DEFAULT_32
>> 2703 bool
>> 2704
>> 2705 config NR_CPUS_DEFAULT_64
>> 2706 bool
>> 2707
>> 2708 config NR_CPUS
>> 2709 int "Maximum number of CPUs (2-256)"
>> 2710 range 2 256
860 depends on SMP 2711 depends on SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 2712 default "4" if NR_CPUS_DEFAULT_4
>> 2713 default "8" if NR_CPUS_DEFAULT_8
>> 2714 default "16" if NR_CPUS_DEFAULT_16
>> 2715 default "32" if NR_CPUS_DEFAULT_32
>> 2716 default "64" if NR_CPUS_DEFAULT_64
>> 2717 help
>> 2718 This allows you to specify the maximum number of CPUs which this
>> 2719 kernel will support. The maximum supported value is 32 for 32-bit
>> 2720 kernel and 64 for 64-bit kernels; the minimum value which makes
>> 2721 sense is 1 for Qemu (useful only for kernel debugging purposes)
>> 2722 and 2 for all others.
>> 2723
>> 2724 This is purely to save memory - each supported CPU adds
>> 2725 approximately eight kilobytes to the kernel image. For best
>> 2726 performance should round up your number of processors to the next
>> 2727 power of two.
>> 2728
>> 2729 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2730 bool
>> 2731
>> 2732 config MIPS_NR_CPU_NR_MAP_1024
>> 2733 bool
>> 2734
>> 2735 config MIPS_NR_CPU_NR_MAP
>> 2736 int
>> 2737 depends on SMP
>> 2738 default 1024 if MIPS_NR_CPU_NR_MAP_1024
>> 2739 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
>> 2740
>> 2741 #
>> 2742 # Timer Interrupt Frequency Configuration
>> 2743 #
>> 2744
>> 2745 choice
>> 2746 prompt "Timer frequency"
>> 2747 default HZ_250
862 help 2748 help
863 This enables support for booting Lin !! 2749 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 2750
876 If unsure what to do here, say N. !! 2751 config HZ_24
>> 2752 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
877 2753
878 config ARCH_SUPPORTS_KEXEC !! 2754 config HZ_48
879 def_bool y !! 2755 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
880 2756
881 config ARCH_SELECTS_KEXEC !! 2757 config HZ_100
882 def_bool y !! 2758 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 2759
886 config ARCH_SUPPORTS_KEXEC_FILE !! 2760 config HZ_128
887 def_bool 64BIT !! 2761 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
888 2762
889 config ARCH_SELECTS_KEXEC_FILE !! 2763 config HZ_250
890 def_bool y !! 2764 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
891 depends on KEXEC_FILE <<
892 select HAVE_IMA_KEXEC if IMA <<
893 select KEXEC_ELF <<
894 2765
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 2766 config HZ_256
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 2767 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
897 2768
898 config ARCH_SUPPORTS_CRASH_DUMP !! 2769 config HZ_1000
899 def_bool y !! 2770 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
900 2771
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 2772 config HZ_1024
902 def_bool CRASH_RESERVE !! 2773 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
903 2774
904 config COMPAT !! 2775 endchoice
905 bool "Kernel support for 32-bit U-mode <<
906 default 64BIT <<
907 depends on 64BIT && MMU <<
908 help <<
909 This option enables support for a 32 <<
910 kernel at S-mode. riscv32-specific c <<
911 the user helper functions (vdso), si <<
912 ptrace interface are handled appropr <<
913 <<
914 If you want to execute 32-bit usersp <<
915 <<
916 config PARAVIRT <<
917 bool "Enable paravirtualization code" <<
918 depends on RISCV_SBI <<
919 help <<
920 This changes the kernel so it can mo <<
921 under a hypervisor, potentially impr <<
922 over full virtualization. <<
923 <<
924 config PARAVIRT_TIME_ACCOUNTING <<
925 bool "Paravirtual steal time accountin <<
926 depends on PARAVIRT <<
927 help <<
928 Select this option to enable fine gr <<
929 accounting. Time spent executing oth <<
930 the current vCPU is discounted from <<
931 that, there can be a small performan <<
932 2776
933 If in doubt, say N here. !! 2777 config SYS_SUPPORTS_24HZ
>> 2778 bool
934 2779
935 config RELOCATABLE !! 2780 config SYS_SUPPORTS_48HZ
936 bool "Build a relocatable kernel" !! 2781 bool
937 depends on MMU && 64BIT && !XIP_KERNEL !! 2782
938 select MODULE_SECTIONS if MODULES !! 2783 config SYS_SUPPORTS_100HZ
939 help !! 2784 bool
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 2785
948 If unsure, say N. !! 2786 config SYS_SUPPORTS_128HZ
>> 2787 bool
949 2788
950 config RANDOMIZE_BASE !! 2789 config SYS_SUPPORTS_250HZ
951 bool "Randomize the address of the ker !! 2790 bool
952 select RELOCATABLE !! 2791
953 depends on MMU && 64BIT && !XIP_KERNEL !! 2792 config SYS_SUPPORTS_256HZ
954 help !! 2793 bool
955 Randomizes the virtual address at wh !! 2794
956 loaded, as a security feature that d !! 2795 config SYS_SUPPORTS_1000HZ
957 relying on knowledge of the location !! 2796 bool
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 2797
981 When that occurs, it is possible to !! 2798 config SYS_SUPPORTS_1024HZ
982 line here and choose how the kernel !! 2799 bool
>> 2800
>> 2801 config SYS_SUPPORTS_ARBIT_HZ
>> 2802 bool
>> 2803 default y if !SYS_SUPPORTS_24HZ && \
>> 2804 !SYS_SUPPORTS_48HZ && \
>> 2805 !SYS_SUPPORTS_100HZ && \
>> 2806 !SYS_SUPPORTS_128HZ && \
>> 2807 !SYS_SUPPORTS_250HZ && \
>> 2808 !SYS_SUPPORTS_256HZ && \
>> 2809 !SYS_SUPPORTS_1000HZ && \
>> 2810 !SYS_SUPPORTS_1024HZ
>> 2811
>> 2812 config HZ
>> 2813 int
>> 2814 default 24 if HZ_24
>> 2815 default 48 if HZ_48
>> 2816 default 100 if HZ_100
>> 2817 default 128 if HZ_128
>> 2818 default 250 if HZ_250
>> 2819 default 256 if HZ_256
>> 2820 default 1000 if HZ_1000
>> 2821 default 1024 if HZ_1024
>> 2822
>> 2823 config SCHED_HRTICK
>> 2824 def_bool HIGH_RES_TIMERS
>> 2825
>> 2826 config KEXEC
>> 2827 bool "Kexec system call"
>> 2828 select KEXEC_CORE
>> 2829 help
>> 2830 kexec is a system call that implements the ability to shutdown your
>> 2831 current kernel, and to start another kernel. It is like a reboot
>> 2832 but it is independent of the system firmware. And like a reboot
>> 2833 you can start any kernel with it, not just Linux.
>> 2834
>> 2835 The name comes from the similarity to the exec system call.
>> 2836
>> 2837 It is an ongoing process to be certain the hardware in a machine
>> 2838 is properly shutdown, so do not be surprised if this code does not
>> 2839 initially work for you. As of this writing the exact hardware
>> 2840 interface is strongly in flux, so no good recommendation can be
>> 2841 made.
>> 2842
>> 2843 config CRASH_DUMP
>> 2844 bool "Kernel crash dumps"
>> 2845 help
>> 2846 Generate crash dump after being started by kexec.
>> 2847 This should be normally only set in special crash dump kernels
>> 2848 which are loaded in the main kernel with kexec-tools into
>> 2849 a specially reserved region and then later executed after
>> 2850 a crash by kdump/kexec. The crash dump kernel must be compiled
>> 2851 to a memory address not used by the main kernel or firmware using
>> 2852 PHYSICAL_START.
>> 2853
>> 2854 config PHYSICAL_START
>> 2855 hex "Physical address where the kernel is loaded"
>> 2856 default "0xffffffff84000000"
>> 2857 depends on CRASH_DUMP
>> 2858 help
>> 2859 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
>> 2860 If you plan to use kernel for capturing the crash dump change
>> 2861 this value to start of the reserved region (the "X" value as
>> 2862 specified in the "crashkernel=YM@XM" command line boot parameter
>> 2863 passed to the panic-ed kernel).
>> 2864
>> 2865 config SECCOMP
>> 2866 bool "Enable seccomp to safely compute untrusted bytecode"
>> 2867 depends on PROC_FS
>> 2868 default y
>> 2869 help
>> 2870 This kernel feature is useful for number crunching applications
>> 2871 that may need to compute untrusted bytecode during their
>> 2872 execution. By using pipes or other transports made available to
>> 2873 the process as file descriptors supporting the read/write
>> 2874 syscalls, it's possible to isolate those applications in
>> 2875 their own address space using seccomp. Once seccomp is
>> 2876 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 2877 and the task is only allowed to execute a few safe syscalls
>> 2878 defined by each seccomp mode.
>> 2879
>> 2880 If unsure, say Y. Only embedded should say N here.
>> 2881
>> 2882 config MIPS_O32_FP64_SUPPORT
>> 2883 bool "Support for O32 binaries using 64-bit FP"
>> 2884 depends on 32BIT || MIPS32_O32
>> 2885 help
>> 2886 When this is enabled, the kernel will support use of 64-bit floating
>> 2887 point registers with binaries using the O32 ABI along with the
>> 2888 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
>> 2889 32-bit MIPS systems this support is at the cost of increasing the
>> 2890 size and complexity of the compiled FPU emulator. Thus if you are
>> 2891 running a MIPS32 system and know that none of your userland binaries
>> 2892 will require 64-bit floating point, you may wish to reduce the size
>> 2893 of your kernel & potentially improve FP emulation performance by
>> 2894 saying N here.
>> 2895
>> 2896 Although binutils currently supports use of this flag the details
>> 2897 concerning its effect upon the O32 ABI in userland are still being
>> 2898 worked on. In order to avoid userland becoming dependant upon current
>> 2899 behaviour before the details have been finalised, this option should
>> 2900 be considered experimental and only enabled by those working upon
>> 2901 said details.
>> 2902
>> 2903 If unsure, say N.
>> 2904
>> 2905 config USE_OF
>> 2906 bool
>> 2907 select OF
>> 2908 select OF_EARLY_FLATTREE
>> 2909 select IRQ_DOMAIN
>> 2910
>> 2911 config BUILTIN_DTB
>> 2912 bool
983 2913
984 choice 2914 choice
985 prompt "Built-in command line usage" !! 2915 prompt "Kernel appended dtb support" if USE_OF
986 depends on CMDLINE != "" !! 2916 default MIPS_NO_APPENDED_DTB
987 default CMDLINE_FALLBACK <<
988 help <<
989 Choose how the kernel will handle th <<
990 line. <<
991 <<
992 config CMDLINE_FALLBACK <<
993 bool "Use bootloader kernel arguments <<
994 help <<
995 Use the built-in command line as fal <<
996 during boot. This is the default beh <<
997 <<
998 config CMDLINE_EXTEND <<
999 bool "Extend bootloader kernel argumen <<
1000 help <<
1001 The command-line arguments provided <<
1002 appended to the built-in command li <<
1003 cases where the provided arguments <<
1004 you don't want to or cannot modify <<
1005 <<
1006 config CMDLINE_FORCE <<
1007 bool "Always use the default kernel c <<
1008 help <<
1009 Always use the built-in command lin <<
1010 boot. This is useful in case you ne <<
1011 command line on systems where you d <<
1012 over it. <<
1013 2917
>> 2918 config MIPS_NO_APPENDED_DTB
>> 2919 bool "None"
>> 2920 help
>> 2921 Do not enable appended dtb support.
>> 2922
>> 2923 config MIPS_ELF_APPENDED_DTB
>> 2924 bool "vmlinux"
>> 2925 help
>> 2926 With this option, the boot code will look for a device tree binary
>> 2927 DTB) included in the vmlinux ELF section .appended_dtb. By default
>> 2928 it is empty and the DTB can be appended using binutils command
>> 2929 objcopy:
>> 2930
>> 2931 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
>> 2932
>> 2933 This is meant as a backward compatiblity convenience for those
>> 2934 systems with a bootloader that can't be upgraded to accommodate
>> 2935 the documented boot protocol using a device tree.
>> 2936
>> 2937 config MIPS_RAW_APPENDED_DTB
>> 2938 bool "vmlinux.bin or vmlinuz.bin"
>> 2939 help
>> 2940 With this option, the boot code will look for a device tree binary
>> 2941 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
>> 2942 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
>> 2943
>> 2944 This is meant as a backward compatibility convenience for those
>> 2945 systems with a bootloader that can't be upgraded to accommodate
>> 2946 the documented boot protocol using a device tree.
>> 2947
>> 2948 Beware that there is very little in terms of protection against
>> 2949 this option being confused by leftover garbage in memory that might
>> 2950 look like a DTB header after a reboot if no actual DTB is appended
>> 2951 to vmlinux.bin. Do not leave this option active in a production kernel
>> 2952 if you don't intend to always append a DTB.
>> 2953 endchoice
>> 2954
>> 2955 choice
>> 2956 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
>> 2957 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
>> 2958 !MIPS_MALTA && \
>> 2959 !CAVIUM_OCTEON_SOC
>> 2960 default MIPS_CMDLINE_FROM_BOOTLOADER
>> 2961
>> 2962 config MIPS_CMDLINE_FROM_DTB
>> 2963 depends on USE_OF
>> 2964 bool "Dtb kernel arguments if available"
>> 2965
>> 2966 config MIPS_CMDLINE_DTB_EXTEND
>> 2967 depends on USE_OF
>> 2968 bool "Extend dtb kernel arguments with bootloader arguments"
>> 2969
>> 2970 config MIPS_CMDLINE_FROM_BOOTLOADER
>> 2971 bool "Bootloader kernel arguments if available"
>> 2972
>> 2973 config MIPS_CMDLINE_BUILTIN_EXTEND
>> 2974 depends on CMDLINE_BOOL
>> 2975 bool "Extend builtin kernel arguments with bootloader arguments"
1014 endchoice 2976 endchoice
1015 2977
1016 config EFI_STUB !! 2978 endmenu
>> 2979
>> 2980 config LOCKDEP_SUPPORT
1017 bool 2981 bool
>> 2982 default y
1018 2983
1019 config EFI !! 2984 config STACKTRACE_SUPPORT
1020 bool "UEFI runtime support" !! 2985 bool
1021 depends on OF && !XIP_KERNEL !! 2986 default y
1022 depends on MMU <<
1023 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 2987
1039 config DMI !! 2988 config HAVE_LATENCYTOP_SUPPORT
1040 bool "Enable support for SMBIOS (DMI) !! 2989 bool
1041 depends on EFI <<
1042 default y 2990 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
1045 2991
1046 This option is only useful on syste !! 2992 config PGTABLE_LEVELS
1047 However, even with this option, the !! 2993 int
1048 continue to boot on existing non-UE !! 2994 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
>> 2995 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
>> 2996 default 2
1049 2997
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 2998 config MIPS_AUTO_PFN_OFFSET
1051 def_bool $(cc-option,-mstack-protecto !! 2999 bool
1052 3000
1053 config STACKPROTECTOR_PER_TASK !! 3001 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 3002
1058 config PHYS_RAM_BASE_FIXED !! 3003 config HW_HAS_EISA
1059 bool "Explicitly specified physical R !! 3004 bool
1060 depends on NONPORTABLE !! 3005 config HW_HAS_PCI
1061 default n !! 3006 bool
1062 3007
1063 config PHYS_RAM_BASE !! 3008 config PCI
1064 hex "Platform Physical RAM address" !! 3009 bool "Support for PCI controller"
1065 depends on PHYS_RAM_BASE_FIXED !! 3010 depends on HW_HAS_PCI
1066 default "0x80000000" !! 3011 select PCI_DOMAINS
1067 help !! 3012 help
1068 This is the physical address of RAM !! 3013 Find out whether you have a PCI motherboard. PCI is the name of a
1069 explicitly specified to run early r !! 3014 bus system, i.e. the way the CPU talks to the other stuff inside
1070 from flash to RAM. !! 3015 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1071 !! 3016 say Y, otherwise N.
1072 config XIP_KERNEL !! 3017
1073 bool "Kernel Execute-In-Place from RO !! 3018 config HT_PCI
1074 depends on MMU && SPARSEMEM && NONPOR !! 3019 bool "Support for HT-linked PCI"
1075 # This prevents XIP from being enable !! 3020 default y
1076 # fail to build since XIP doesn't sup !! 3021 depends on CPU_LOONGSON3
1077 depends on !COMPILE_TEST !! 3022 select PCI
1078 select PHYS_RAM_BASE_FIXED !! 3023 select PCI_DOMAINS
1079 help !! 3024 help
1080 Execute-In-Place allows the kernel !! 3025 Loongson family machines use Hyper-Transport bus for inter-core
1081 directly addressable by the CPU, su !! 3026 connection and device connection. The PCI bus is a subordinate
1082 space since the text section of the !! 3027 linked at HT. Choose Y for Loongson-3 based machines.
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 3028
1099 If unsure, say N. !! 3029 config PCI_DOMAINS
>> 3030 bool
>> 3031
>> 3032 config PCI_DOMAINS_GENERIC
>> 3033 bool
1100 3034
1101 config XIP_PHYS_ADDR !! 3035 config PCI_DRIVERS_GENERIC
1102 hex "XIP Kernel Physical Location" !! 3036 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
1103 depends on XIP_KERNEL !! 3037 bool
1104 default "0x21000000" <<
1105 help <<
1106 This is the physical address in you <<
1107 be linked for and stored to. This <<
1108 own flash usage. <<
1109 <<
1110 config RISCV_ISA_FALLBACK <<
1111 bool "Permit falling back to parsing <<
1112 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 3038
1128 config BUILTIN_DTB !! 3039 config PCI_DRIVERS_LEGACY
1129 bool "Built-in device tree" !! 3040 def_bool !PCI_DRIVERS_GENERIC
1130 depends on OF && NONPORTABLE !! 3041 select NO_GENERIC_PCI_IOPORT_MAP
1131 help !! 3042
1132 Build a device tree into the Linux !! 3043 source "drivers/pci/Kconfig"
1133 This option should be selected if n !! 3044
1134 If unsure, say N. !! 3045 #
>> 3046 # ISA support is now enabled via select. Too many systems still have the one
>> 3047 # or other ISA chip on the board that users don't know about so don't expect
>> 3048 # users to choose the right thing ...
>> 3049 #
>> 3050 config ISA
>> 3051 bool
>> 3052
>> 3053 config EISA
>> 3054 bool "EISA support"
>> 3055 depends on HW_HAS_EISA
>> 3056 select ISA
>> 3057 select GENERIC_ISA_DMA
>> 3058 ---help---
>> 3059 The Extended Industry Standard Architecture (EISA) bus was
>> 3060 developed as an open alternative to the IBM MicroChannel bus.
>> 3061
>> 3062 The EISA bus provided some of the features of the IBM MicroChannel
>> 3063 bus while maintaining backward compatibility with cards made for
>> 3064 the older ISA bus. The EISA bus saw limited use between 1988 and
>> 3065 1995 when it was made obsolete by the PCI bus.
>> 3066
>> 3067 Say Y here if you are building a kernel for an EISA-based machine.
>> 3068
>> 3069 Otherwise, say N.
>> 3070
>> 3071 source "drivers/eisa/Kconfig"
>> 3072
>> 3073 config TC
>> 3074 bool "TURBOchannel support"
>> 3075 depends on MACH_DECSTATION
>> 3076 help
>> 3077 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
>> 3078 processors. TURBOchannel programming specifications are available
>> 3079 at:
>> 3080 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 3081 and:
>> 3082 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 3083 Linux driver support status is documented at:
>> 3084 <http://www.linux-mips.org/wiki/DECstation>
>> 3085
>> 3086 config MMU
>> 3087 bool
>> 3088 default y
>> 3089
>> 3090 config ARCH_MMAP_RND_BITS_MIN
>> 3091 default 12 if 64BIT
>> 3092 default 8
>> 3093
>> 3094 config ARCH_MMAP_RND_BITS_MAX
>> 3095 default 18 if 64BIT
>> 3096 default 15
1135 3097
>> 3098 config ARCH_MMAP_RND_COMPAT_BITS_MIN
>> 3099 default 8
>> 3100
>> 3101 config ARCH_MMAP_RND_COMPAT_BITS_MAX
>> 3102 default 15
1136 3103
1137 config BUILTIN_DTB_SOURCE !! 3104 config I8253
1138 string "Built-in device tree source" !! 3105 bool
1139 depends on BUILTIN_DTB !! 3106 select CLKSRC_I8253
>> 3107 select CLKEVT_I8253
>> 3108 select MIPS_EXTERNAL_TIMER
>> 3109
>> 3110 config ZONE_DMA
>> 3111 bool
>> 3112
>> 3113 config ZONE_DMA32
>> 3114 bool
>> 3115
>> 3116 source "drivers/pcmcia/Kconfig"
>> 3117
>> 3118 config HAS_RAPIDIO
>> 3119 bool
>> 3120 default n
>> 3121
>> 3122 config RAPIDIO
>> 3123 tristate "RapidIO support"
>> 3124 depends on HAS_RAPIDIO || PCI
1140 help 3125 help
1141 DTS file path (without suffix, rela !! 3126 If you say Y here, the kernel will include drivers and
1142 for the DTS file that will be used !! 3127 infrastructure code to support RapidIO interconnect devices.
1143 kernel. !! 3128
>> 3129 source "drivers/rapidio/Kconfig"
1144 3130
1145 endmenu # "Boot options" !! 3131 endmenu
1146 3132
1147 config PORTABLE !! 3133 config TRAD_SIGNALS
1148 bool 3134 bool
1149 default !NONPORTABLE <<
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 3135
1154 config ARCH_PROC_KCORE_TEXT !! 3136 config MIPS32_COMPAT
1155 def_bool y !! 3137 bool
1156 3138
1157 menu "Power management options" !! 3139 config COMPAT
>> 3140 bool
1158 3141
1159 source "kernel/power/Kconfig" !! 3142 config SYSVIPC_COMPAT
>> 3143 bool
>> 3144
>> 3145 config MIPS32_O32
>> 3146 bool "Kernel support for o32 binaries"
>> 3147 depends on 64BIT
>> 3148 select ARCH_WANT_OLD_COMPAT_IPC
>> 3149 select COMPAT
>> 3150 select MIPS32_COMPAT
>> 3151 select SYSVIPC_COMPAT if SYSVIPC
>> 3152 help
>> 3153 Select this option if you want to run o32 binaries. These are pure
>> 3154 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 3155 existing binaries are in this format.
>> 3156
>> 3157 If unsure, say Y.
>> 3158
>> 3159 config MIPS32_N32
>> 3160 bool "Kernel support for n32 binaries"
>> 3161 depends on 64BIT
>> 3162 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>> 3163 select COMPAT
>> 3164 select MIPS32_COMPAT
>> 3165 select SYSVIPC_COMPAT if SYSVIPC
>> 3166 help
>> 3167 Select this option if you want to run n32 binaries. These are
>> 3168 64-bit binaries using 32-bit quantities for addressing and certain
>> 3169 data that would normally be 64-bit. They are used in special
>> 3170 cases.
>> 3171
>> 3172 If unsure, say N.
>> 3173
>> 3174 config BINFMT_ELF32
>> 3175 bool
>> 3176 default y if MIPS32_O32 || MIPS32_N32
>> 3177 select ELFCORE
>> 3178
>> 3179 menu "Power management options"
1160 3180
1161 config ARCH_HIBERNATION_POSSIBLE 3181 config ARCH_HIBERNATION_POSSIBLE
1162 def_bool y 3182 def_bool y
1163 !! 3183 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 3184
1167 config ARCH_SUSPEND_POSSIBLE 3185 config ARCH_SUSPEND_POSSIBLE
1168 def_bool y 3186 def_bool y
>> 3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1169 3188
1170 endmenu # "Power management options" !! 3189 source "kernel/power/Kconfig"
1171 3190
1172 menu "CPU Power Management" !! 3191 endmenu
1173 3192
1174 source "drivers/cpuidle/Kconfig" !! 3193 config MIPS_EXTERNAL_TIMER
>> 3194 bool
>> 3195
>> 3196 menu "CPU Power Management"
1175 3197
>> 3198 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
1176 source "drivers/cpufreq/Kconfig" 3199 source "drivers/cpufreq/Kconfig"
>> 3200 endif
>> 3201
>> 3202 source "drivers/cpuidle/Kconfig"
1177 3203
1178 endmenu # "CPU Power Management" !! 3204 endmenu
1179 3205
1180 source "arch/riscv/kvm/Kconfig" !! 3206 source "drivers/firmware/Kconfig"
1181 3207
1182 source "drivers/acpi/Kconfig" !! 3208 source "arch/mips/kvm/Kconfig"
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