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_DISCARD_MEMBLOCK
13 config RISCV !! 8 select ARCH_HAS_ELF_RANDOMIZE
14 def_bool y <<
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 9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
52 select ARCH_HAS_UBSAN !! 10 select ARCH_SUPPORTS_UPROBES
53 select ARCH_HAS_VDSO_DATA !! 11 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 12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
71 select ARCH_USE_MEMTEST <<
72 select ARCH_USE_QUEUED_RWLOCKS 13 select ARCH_USE_QUEUED_RWLOCKS
73 select ARCH_USE_SYM_ANNOTATIONS !! 14 select ARCH_USE_QUEUED_SPINLOCKS
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN !! 15 select ARCH_WANT_IPC_PARSE_VERSION
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU !! 16 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 17 select CLONE_BACKWARDS
89 select COMMON_CLK !! 18 select CPU_PM if CPU_IDLE
90 select CPU_PM if CPU_IDLE || HIBERNATI <<
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 19 select GENERIC_ATOMIC64 if !64BIT
96 select GENERIC_CLOCKEVENTS_BROADCAST i !! 20 select GENERIC_CLOCKEVENTS
97 select GENERIC_CPU_DEVICES !! 21 select GENERIC_CMOS_UPDATE
98 select GENERIC_CPU_VULNERABILITIES !! 22 select GENERIC_CPU_AUTOPROBE
99 select GENERIC_EARLY_IOREMAP !! 23 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 24 select GENERIC_IRQ_SHOW
108 select GENERIC_IRQ_SHOW_LEVEL <<
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP 25 select GENERIC_PCI_IOMAP
111 select GENERIC_PTDUMP if MMU !! 26 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
112 select GENERIC_SCHED_CLOCK <<
113 select GENERIC_SMP_IDLE_THREAD 27 select GENERIC_SMP_IDLE_THREAD
114 select GENERIC_TIME_VSYSCALL if MMU && !! 28 select GENERIC_TIME_VSYSCALL
115 select GENERIC_VDSO_TIME_NS if HAVE_GE !! 29 select HANDLE_DOMAIN_IRQ
116 select HARDIRQS_SW_RESEND !! 30 select HAVE_ARCH_JUMP_LABEL
117 select HAS_IOPORT if MMU !! 31 select HAVE_ARCH_KGDB
118 select HAVE_ARCH_AUDITSYSCALL <<
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 32 select HAVE_ARCH_MMAP_RND_BITS if MMU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 33 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER 34 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK 35 select HAVE_ARCH_TRACEHOOK
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 36 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 37 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 38 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
138 select HAVE_ASM_MODVERSIONS !! 39 select HAVE_CC_STACKPROTECTOR
139 select HAVE_CONTEXT_TRACKING_USER !! 40 select HAVE_CONTEXT_TRACKING
>> 41 select HAVE_COPY_THREAD_TLS
>> 42 select HAVE_C_RECORDMCOUNT
140 select HAVE_DEBUG_KMEMLEAK 43 select HAVE_DEBUG_KMEMLEAK
141 select HAVE_DMA_CONTIGUOUS if MMU !! 44 select HAVE_DEBUG_STACKOVERFLOW
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER !! 45 select HAVE_DMA_API_DEBUG
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT !! 46 select HAVE_DMA_CONTIGUOUS
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i !! 47 select HAVE_DYNAMIC_FTRACE
145 select HAVE_FTRACE_MCOUNT_RECORD if !X !! 48 select HAVE_EXIT_THREAD
>> 49 select HAVE_FTRACE_MCOUNT_RECORD
146 select HAVE_FUNCTION_GRAPH_TRACER 50 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 51 select HAVE_FUNCTION_TRACER
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 52 select HAVE_GENERIC_DMA_COHERENT
149 select HAVE_EBPF_JIT if MMU !! 53 select HAVE_IDE
150 select HAVE_GUP_FAST if MMU !! 54 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 55 select HAVE_IRQ_TIME_ACCOUNTING
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE !! 56 select HAVE_KPROBES
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL !! 57 select HAVE_KRETPROBES
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL !! 58 select HAVE_MEMBLOCK
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL !! 59 select HAVE_MEMBLOCK_NODE_MAP
160 select HAVE_KERNEL_LZO if !XIP_KERNEL !! 60 select HAVE_MOD_ARCH_SPECIFIC
161 select HAVE_KERNEL_UNCOMPRESSED if !XI !! 61 select HAVE_NMI
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL !! 62 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 63 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 64 select HAVE_REGS_AND_STACK_ACCESS_API
178 select HAVE_RETHOOK if !XIP_KERNEL <<
179 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 <<
184 select HAVE_SYSCALL_TRACEPOINTS 65 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 66 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
186 select IRQ_DOMAIN <<
187 select IRQ_FORCED_THREADING 67 select IRQ_FORCED_THREADING
188 select KASAN_VMALLOC if KASAN !! 68 select MODULES_USE_ELF_RELA if MODULES && 64BIT
189 select LOCK_MM_AND_FIND_VMA !! 69 select MODULES_USE_ELF_REL if MODULES
190 select MMU_GATHER_RCU_TABLE_FREE if SM !! 70 select PERF_USE_VMALLOC
191 select MODULES_USE_ELF_RELA if MODULES !! 71 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 72 select SYSCTL_EXCEPTION_TRACE
206 select THREAD_INFO_IN_TASK !! 73 select VIRT_TO_BUS
207 select TRACE_IRQFLAGS_SUPPORT !! 74
208 select UACCESS_MEMCPY if !MMU !! 75 menu "Machine selection"
209 select USER_STACKTRACE_SUPPORT !! 76
>> 77 choice
>> 78 prompt "System type"
>> 79 default MIPS_GENERIC
>> 80
>> 81 config MIPS_GENERIC
>> 82 bool "Generic board-agnostic MIPS kernel"
>> 83 select BOOT_RAW
>> 84 select BUILTIN_DTB
>> 85 select CEVT_R4K
>> 86 select CLKSRC_MIPS_GIC
>> 87 select COMMON_CLK
>> 88 select CPU_MIPSR2_IRQ_VI
>> 89 select CPU_MIPSR2_IRQ_EI
>> 90 select CSRC_R4K
>> 91 select DMA_PERDEV_COHERENT
>> 92 select HW_HAS_PCI
>> 93 select IRQ_MIPS_CPU
>> 94 select LIBFDT
>> 95 select MIPS_CPU_SCACHE
>> 96 select MIPS_GIC
>> 97 select MIPS_L1_CACHE_SHIFT_7
>> 98 select NO_EXCEPT_FILL
>> 99 select PCI_DRIVERS_GENERIC
>> 100 select PINCTRL
>> 101 select SMP_UP if SMP
>> 102 select SWAP_IO_SPACE
>> 103 select SYS_HAS_CPU_MIPS32_R1
>> 104 select SYS_HAS_CPU_MIPS32_R2
>> 105 select SYS_HAS_CPU_MIPS32_R6
>> 106 select SYS_HAS_CPU_MIPS64_R1
>> 107 select SYS_HAS_CPU_MIPS64_R2
>> 108 select SYS_HAS_CPU_MIPS64_R6
>> 109 select SYS_SUPPORTS_32BIT_KERNEL
>> 110 select SYS_SUPPORTS_64BIT_KERNEL
>> 111 select SYS_SUPPORTS_BIG_ENDIAN
>> 112 select SYS_SUPPORTS_HIGHMEM
>> 113 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 114 select SYS_SUPPORTS_MICROMIPS
>> 115 select SYS_SUPPORTS_MIPS_CPS
>> 116 select SYS_SUPPORTS_MIPS16
>> 117 select SYS_SUPPORTS_MULTITHREADING
>> 118 select SYS_SUPPORTS_RELOCATABLE
>> 119 select SYS_SUPPORTS_SMARTMIPS
>> 120 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 121 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 122 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 123 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 124 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 125 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 126 select USE_OF
>> 127 help
>> 128 Select this to build a kernel which aims to support multiple boards,
>> 129 generally using a flattened device tree passed from the bootloader
>> 130 using the boot protocol defined in the UHI (Unified Hosting
>> 131 Interface) specification.
>> 132
>> 133 config MIPS_ALCHEMY
>> 134 bool "Alchemy processor based machines"
>> 135 select ARCH_PHYS_ADDR_T_64BIT
>> 136 select CEVT_R4K
>> 137 select CSRC_R4K
>> 138 select IRQ_MIPS_CPU
>> 139 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
>> 140 select SYS_HAS_CPU_MIPS32_R1
>> 141 select SYS_SUPPORTS_32BIT_KERNEL
>> 142 select SYS_SUPPORTS_APM_EMULATION
>> 143 select GPIOLIB
>> 144 select SYS_SUPPORTS_ZBOOT
>> 145 select COMMON_CLK
>> 146
>> 147 config AR7
>> 148 bool "Texas Instruments AR7"
>> 149 select BOOT_ELF32
>> 150 select DMA_NONCOHERENT
>> 151 select CEVT_R4K
>> 152 select CSRC_R4K
>> 153 select IRQ_MIPS_CPU
>> 154 select NO_EXCEPT_FILL
>> 155 select SWAP_IO_SPACE
>> 156 select SYS_HAS_CPU_MIPS32_R1
>> 157 select SYS_HAS_EARLY_PRINTK
>> 158 select SYS_SUPPORTS_32BIT_KERNEL
>> 159 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 160 select SYS_SUPPORTS_MIPS16
>> 161 select SYS_SUPPORTS_ZBOOT_UART16550
>> 162 select GPIOLIB
>> 163 select VLYNQ
>> 164 select HAVE_CLK
>> 165 help
>> 166 Support for the Texas Instruments AR7 System-on-a-Chip
>> 167 family: TNETD7100, 7200 and 7300.
>> 168
>> 169 config ATH25
>> 170 bool "Atheros AR231x/AR531x SoC support"
>> 171 select CEVT_R4K
>> 172 select CSRC_R4K
>> 173 select DMA_NONCOHERENT
>> 174 select IRQ_MIPS_CPU
>> 175 select IRQ_DOMAIN
>> 176 select SYS_HAS_CPU_MIPS32_R1
>> 177 select SYS_SUPPORTS_BIG_ENDIAN
>> 178 select SYS_SUPPORTS_32BIT_KERNEL
>> 179 select SYS_HAS_EARLY_PRINTK
>> 180 help
>> 181 Support for Atheros AR231x and Atheros AR531x based boards
>> 182
>> 183 config ATH79
>> 184 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 185 select ARCH_HAS_RESET_CONTROLLER
>> 186 select BOOT_RAW
>> 187 select CEVT_R4K
>> 188 select CSRC_R4K
>> 189 select DMA_NONCOHERENT
>> 190 select GPIOLIB
>> 191 select HAVE_CLK
>> 192 select COMMON_CLK
>> 193 select CLKDEV_LOOKUP
>> 194 select IRQ_MIPS_CPU
>> 195 select MIPS_MACHINE
>> 196 select SYS_HAS_CPU_MIPS32_R2
>> 197 select SYS_HAS_EARLY_PRINTK
>> 198 select SYS_SUPPORTS_32BIT_KERNEL
>> 199 select SYS_SUPPORTS_BIG_ENDIAN
>> 200 select SYS_SUPPORTS_MIPS16
>> 201 select SYS_SUPPORTS_ZBOOT_UART_PROM
>> 202 select USE_OF
>> 203 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
>> 204 help
>> 205 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 206
>> 207 config BMIPS_GENERIC
>> 208 bool "Broadcom Generic BMIPS kernel"
>> 209 select BOOT_RAW
>> 210 select NO_EXCEPT_FILL
>> 211 select USE_OF
>> 212 select CEVT_R4K
>> 213 select CSRC_R4K
>> 214 select SYNC_R4K
>> 215 select COMMON_CLK
>> 216 select BCM6345_L1_IRQ
>> 217 select BCM7038_L1_IRQ
>> 218 select BCM7120_L2_IRQ
>> 219 select BRCMSTB_L2_IRQ
>> 220 select IRQ_MIPS_CPU
>> 221 select DMA_NONCOHERENT
>> 222 select SYS_SUPPORTS_32BIT_KERNEL
>> 223 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 224 select SYS_SUPPORTS_BIG_ENDIAN
>> 225 select SYS_SUPPORTS_HIGHMEM
>> 226 select SYS_HAS_CPU_BMIPS32_3300
>> 227 select SYS_HAS_CPU_BMIPS4350
>> 228 select SYS_HAS_CPU_BMIPS4380
>> 229 select SYS_HAS_CPU_BMIPS5000
>> 230 select SWAP_IO_SPACE
>> 231 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 232 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 233 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 234 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 235 select HARDIRQS_SW_RESEND
>> 236 help
>> 237 Build a generic DT-based kernel image that boots on select
>> 238 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
>> 239 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
>> 240 must be set appropriately for your board.
>> 241
>> 242 config BCM47XX
>> 243 bool "Broadcom BCM47XX based boards"
>> 244 select BOOT_RAW
>> 245 select CEVT_R4K
>> 246 select CSRC_R4K
>> 247 select DMA_NONCOHERENT
>> 248 select HW_HAS_PCI
>> 249 select IRQ_MIPS_CPU
>> 250 select SYS_HAS_CPU_MIPS32_R1
>> 251 select NO_EXCEPT_FILL
>> 252 select SYS_SUPPORTS_32BIT_KERNEL
>> 253 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 254 select SYS_SUPPORTS_MIPS16
>> 255 select SYS_SUPPORTS_ZBOOT
>> 256 select SYS_HAS_EARLY_PRINTK
>> 257 select USE_GENERIC_EARLY_PRINTK_8250
>> 258 select GPIOLIB
>> 259 select LEDS_GPIO_REGISTER
>> 260 select BCM47XX_NVRAM
>> 261 select BCM47XX_SPROM
>> 262 select BCM47XX_SSB if !BCM47XX_BCMA
>> 263 help
>> 264 Support for BCM47XX based boards
>> 265
>> 266 config BCM63XX
>> 267 bool "Broadcom BCM63XX based boards"
>> 268 select BOOT_RAW
>> 269 select CEVT_R4K
>> 270 select CSRC_R4K
>> 271 select SYNC_R4K
>> 272 select DMA_NONCOHERENT
>> 273 select IRQ_MIPS_CPU
>> 274 select SYS_SUPPORTS_32BIT_KERNEL
>> 275 select SYS_SUPPORTS_BIG_ENDIAN
>> 276 select SYS_HAS_EARLY_PRINTK
>> 277 select SWAP_IO_SPACE
>> 278 select GPIOLIB
>> 279 select HAVE_CLK
>> 280 select MIPS_L1_CACHE_SHIFT_4
>> 281 select CLKDEV_LOOKUP
>> 282 help
>> 283 Support for BCM63XX based boards
>> 284
>> 285 config MIPS_COBALT
>> 286 bool "Cobalt Server"
>> 287 select CEVT_R4K
>> 288 select CSRC_R4K
>> 289 select CEVT_GT641XX
>> 290 select DMA_NONCOHERENT
>> 291 select HW_HAS_PCI
>> 292 select I8253
>> 293 select I8259
>> 294 select IRQ_MIPS_CPU
>> 295 select IRQ_GT641XX
>> 296 select PCI_GT64XXX_PCI0
>> 297 select PCI
>> 298 select SYS_HAS_CPU_NEVADA
>> 299 select SYS_HAS_EARLY_PRINTK
>> 300 select SYS_SUPPORTS_32BIT_KERNEL
>> 301 select SYS_SUPPORTS_64BIT_KERNEL
>> 302 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 303 select USE_GENERIC_EARLY_PRINTK_8250
>> 304
>> 305 config MACH_DECSTATION
>> 306 bool "DECstations"
>> 307 select BOOT_ELF32
>> 308 select CEVT_DS1287
>> 309 select CEVT_R4K if CPU_R4X00
>> 310 select CSRC_IOASIC
>> 311 select CSRC_R4K if CPU_R4X00
>> 312 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 313 select CPU_R4000_WORKAROUNDS if 64BIT
>> 314 select CPU_R4400_WORKAROUNDS if 64BIT
>> 315 select DMA_NONCOHERENT
>> 316 select NO_IOPORT_MAP
>> 317 select IRQ_MIPS_CPU
>> 318 select SYS_HAS_CPU_R3000
>> 319 select SYS_HAS_CPU_R4X00
>> 320 select SYS_SUPPORTS_32BIT_KERNEL
>> 321 select SYS_SUPPORTS_64BIT_KERNEL
>> 322 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 323 select SYS_SUPPORTS_128HZ
>> 324 select SYS_SUPPORTS_256HZ
>> 325 select SYS_SUPPORTS_1024HZ
>> 326 select MIPS_L1_CACHE_SHIFT_4
>> 327 help
>> 328 This enables support for DEC's MIPS based workstations. For details
>> 329 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 330 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 331
>> 332 If you have one of the following DECstation Models you definitely
>> 333 want to choose R4xx0 for the CPU Type:
>> 334
>> 335 DECstation 5000/50
>> 336 DECstation 5000/150
>> 337 DECstation 5000/260
>> 338 DECsystem 5900/260
>> 339
>> 340 otherwise choose R3000.
>> 341
>> 342 config MACH_JAZZ
>> 343 bool "Jazz family of machines"
>> 344 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 345 select ARCH_MIGHT_HAVE_PC_SERIO
>> 346 select FW_ARC
>> 347 select FW_ARC32
>> 348 select ARCH_MAY_HAVE_PC_FDC
>> 349 select CEVT_R4K
>> 350 select CSRC_R4K
>> 351 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 352 select GENERIC_ISA_DMA
>> 353 select HAVE_PCSPKR_PLATFORM
>> 354 select IRQ_MIPS_CPU
>> 355 select I8253
>> 356 select I8259
>> 357 select ISA
>> 358 select SYS_HAS_CPU_R4X00
>> 359 select SYS_SUPPORTS_32BIT_KERNEL
>> 360 select SYS_SUPPORTS_64BIT_KERNEL
>> 361 select SYS_SUPPORTS_100HZ
>> 362 help
>> 363 This a family of machines based on the MIPS R4030 chipset which was
>> 364 used by several vendors to build RISC/os and Windows NT workstations.
>> 365 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 366 Olivetti M700-10 workstations.
>> 367
>> 368 config MACH_INGENIC
>> 369 bool "Ingenic SoC based machines"
>> 370 select SYS_SUPPORTS_32BIT_KERNEL
>> 371 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 372 select SYS_SUPPORTS_ZBOOT_UART16550
>> 373 select DMA_NONCOHERENT
>> 374 select IRQ_MIPS_CPU
>> 375 select PINCTRL
>> 376 select GPIOLIB
>> 377 select COMMON_CLK
>> 378 select GENERIC_IRQ_CHIP
>> 379 select BUILTIN_DTB
>> 380 select USE_OF
>> 381 select LIBFDT
>> 382
>> 383 config LANTIQ
>> 384 bool "Lantiq based platforms"
>> 385 select DMA_NONCOHERENT
>> 386 select IRQ_MIPS_CPU
>> 387 select CEVT_R4K
>> 388 select CSRC_R4K
>> 389 select SYS_HAS_CPU_MIPS32_R1
>> 390 select SYS_HAS_CPU_MIPS32_R2
>> 391 select SYS_SUPPORTS_BIG_ENDIAN
>> 392 select SYS_SUPPORTS_32BIT_KERNEL
>> 393 select SYS_SUPPORTS_MIPS16
>> 394 select SYS_SUPPORTS_MULTITHREADING
>> 395 select SYS_SUPPORTS_VPE_LOADER
>> 396 select SYS_HAS_EARLY_PRINTK
>> 397 select GPIOLIB
>> 398 select SWAP_IO_SPACE
>> 399 select BOOT_RAW
>> 400 select CLKDEV_LOOKUP
>> 401 select USE_OF
>> 402 select PINCTRL
>> 403 select PINCTRL_LANTIQ
>> 404 select ARCH_HAS_RESET_CONTROLLER
>> 405 select RESET_CONTROLLER
>> 406
>> 407 config LASAT
>> 408 bool "LASAT Networks platforms"
>> 409 select CEVT_R4K
>> 410 select CRC32
>> 411 select CSRC_R4K
>> 412 select DMA_NONCOHERENT
>> 413 select SYS_HAS_EARLY_PRINTK
>> 414 select HW_HAS_PCI
>> 415 select IRQ_MIPS_CPU
>> 416 select PCI_GT64XXX_PCI0
>> 417 select MIPS_NILE4
>> 418 select R5000_CPU_SCACHE
>> 419 select SYS_HAS_CPU_R5000
>> 420 select SYS_SUPPORTS_32BIT_KERNEL
>> 421 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
>> 422 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 423
>> 424 config MACH_LOONGSON32
>> 425 bool "Loongson-1 family of machines"
>> 426 select SYS_SUPPORTS_ZBOOT
>> 427 help
>> 428 This enables support for the Loongson-1 family of machines.
>> 429
>> 430 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 431 the Institute of Computing Technology (ICT), Chinese Academy of
>> 432 Sciences (CAS).
>> 433
>> 434 config MACH_LOONGSON64
>> 435 bool "Loongson-2/3 family of machines"
>> 436 select ARCH_HAS_PHYS_TO_DMA
>> 437 select SYS_SUPPORTS_ZBOOT
>> 438 help
>> 439 This enables the support of Loongson-2/3 family of machines.
>> 440
>> 441 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
>> 442 family of multi-core CPUs. They are both 64-bit general-purpose
>> 443 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
>> 444 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
>> 445 in the People's Republic of China. The chief architect is Professor
>> 446 Weiwu Hu.
>> 447
>> 448 config MACH_PISTACHIO
>> 449 bool "IMG Pistachio SoC based boards"
>> 450 select BOOT_ELF32
>> 451 select BOOT_RAW
>> 452 select CEVT_R4K
>> 453 select CLKSRC_MIPS_GIC
>> 454 select COMMON_CLK
>> 455 select CSRC_R4K
>> 456 select DMA_NONCOHERENT
>> 457 select GPIOLIB
>> 458 select IRQ_MIPS_CPU
>> 459 select LIBFDT
>> 460 select MFD_SYSCON
>> 461 select MIPS_CPU_SCACHE
>> 462 select MIPS_GIC
>> 463 select PINCTRL
>> 464 select REGULATOR
>> 465 select SYS_HAS_CPU_MIPS32_R2
>> 466 select SYS_SUPPORTS_32BIT_KERNEL
>> 467 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 468 select SYS_SUPPORTS_MIPS_CPS
>> 469 select SYS_SUPPORTS_MULTITHREADING
>> 470 select SYS_SUPPORTS_RELOCATABLE
>> 471 select SYS_SUPPORTS_ZBOOT
>> 472 select SYS_HAS_EARLY_PRINTK
>> 473 select USE_GENERIC_EARLY_PRINTK_8250
>> 474 select USE_OF
>> 475 help
>> 476 This enables support for the IMG Pistachio SoC platform.
>> 477
>> 478 config MIPS_MALTA
>> 479 bool "MIPS Malta board"
>> 480 select ARCH_MAY_HAVE_PC_FDC
>> 481 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 482 select ARCH_MIGHT_HAVE_PC_SERIO
>> 483 select BOOT_ELF32
>> 484 select BOOT_RAW
>> 485 select BUILTIN_DTB
>> 486 select CEVT_R4K
>> 487 select CSRC_R4K
>> 488 select CLKSRC_MIPS_GIC
>> 489 select COMMON_CLK
>> 490 select DMA_MAYBE_COHERENT
>> 491 select GENERIC_ISA_DMA
>> 492 select HAVE_PCSPKR_PLATFORM
>> 493 select IRQ_MIPS_CPU
>> 494 select MIPS_GIC
>> 495 select HW_HAS_PCI
>> 496 select I8253
>> 497 select I8259
>> 498 select MIPS_BONITO64
>> 499 select MIPS_CPU_SCACHE
>> 500 select MIPS_L1_CACHE_SHIFT_6
>> 501 select PCI_GT64XXX_PCI0
>> 502 select MIPS_MSC
>> 503 select SMP_UP if SMP
>> 504 select SWAP_IO_SPACE
>> 505 select SYS_HAS_CPU_MIPS32_R1
>> 506 select SYS_HAS_CPU_MIPS32_R2
>> 507 select SYS_HAS_CPU_MIPS32_R3_5
>> 508 select SYS_HAS_CPU_MIPS32_R5
>> 509 select SYS_HAS_CPU_MIPS32_R6
>> 510 select SYS_HAS_CPU_MIPS64_R1
>> 511 select SYS_HAS_CPU_MIPS64_R2
>> 512 select SYS_HAS_CPU_MIPS64_R6
>> 513 select SYS_HAS_CPU_NEVADA
>> 514 select SYS_HAS_CPU_RM7000
>> 515 select SYS_SUPPORTS_32BIT_KERNEL
>> 516 select SYS_SUPPORTS_64BIT_KERNEL
>> 517 select SYS_SUPPORTS_BIG_ENDIAN
>> 518 select SYS_SUPPORTS_HIGHMEM
>> 519 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 520 select SYS_SUPPORTS_MICROMIPS
>> 521 select SYS_SUPPORTS_MIPS_CMP
>> 522 select SYS_SUPPORTS_MIPS_CPS
>> 523 select SYS_SUPPORTS_MIPS16
>> 524 select SYS_SUPPORTS_MULTITHREADING
>> 525 select SYS_SUPPORTS_SMARTMIPS
>> 526 select SYS_SUPPORTS_VPE_LOADER
>> 527 select SYS_SUPPORTS_ZBOOT
>> 528 select SYS_SUPPORTS_RELOCATABLE
>> 529 select USE_OF
>> 530 select LIBFDT
210 select ZONE_DMA32 if 64BIT 531 select ZONE_DMA32 if 64BIT
>> 532 select BUILTIN_DTB
>> 533 select LIBFDT
>> 534 help
>> 535 This enables support for the MIPS Technologies Malta evaluation
>> 536 board.
211 537
212 config RUSTC_SUPPORTS_RISCV !! 538 config MACH_PIC32
213 def_bool y !! 539 bool "Microchip PIC32 Family"
214 depends on 64BIT !! 540 help
215 # Shadow call stack requires rustc ver !! 541 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) <<
232 542
233 config RISCV_USE_LINKER_RELAXATION !! 543 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
234 def_bool y !! 544 microcontrollers.
235 # https://github.com/llvm/llvm-project !! 545
236 depends on !LD_IS_LLD || LLD_VERSION > !! 546 config NEC_MARKEINS
>> 547 bool "NEC EMMA2RH Mark-eins board"
>> 548 select SOC_EMMA2RH
>> 549 select HW_HAS_PCI
>> 550 help
>> 551 This enables support for the NEC Electronics Mark-eins boards.
>> 552
>> 553 config MACH_VR41XX
>> 554 bool "NEC VR4100 series based machines"
>> 555 select CEVT_R4K
>> 556 select CSRC_R4K
>> 557 select SYS_HAS_CPU_VR41XX
>> 558 select SYS_SUPPORTS_MIPS16
>> 559 select GPIOLIB
>> 560
>> 561 config NXP_STB220
>> 562 bool "NXP STB220 board"
>> 563 select SOC_PNX833X
>> 564 help
>> 565 Support for NXP Semiconductors STB220 Development Board.
>> 566
>> 567 config NXP_STB225
>> 568 bool "NXP 225 board"
>> 569 select SOC_PNX833X
>> 570 select SOC_PNX8335
>> 571 help
>> 572 Support for NXP Semiconductors STB225 Development Board.
>> 573
>> 574 config PMC_MSP
>> 575 bool "PMC-Sierra MSP chipsets"
>> 576 select CEVT_R4K
>> 577 select CSRC_R4K
>> 578 select DMA_NONCOHERENT
>> 579 select SWAP_IO_SPACE
>> 580 select NO_EXCEPT_FILL
>> 581 select BOOT_RAW
>> 582 select SYS_HAS_CPU_MIPS32_R1
>> 583 select SYS_HAS_CPU_MIPS32_R2
>> 584 select SYS_SUPPORTS_32BIT_KERNEL
>> 585 select SYS_SUPPORTS_BIG_ENDIAN
>> 586 select SYS_SUPPORTS_MIPS16
>> 587 select IRQ_MIPS_CPU
>> 588 select SERIAL_8250
>> 589 select SERIAL_8250_CONSOLE
>> 590 select USB_EHCI_BIG_ENDIAN_MMIO
>> 591 select USB_EHCI_BIG_ENDIAN_DESC
>> 592 help
>> 593 This adds support for the PMC-Sierra family of Multi-Service
>> 594 Processor System-On-A-Chips. These parts include a number
>> 595 of integrated peripherals, interfaces and DSPs in addition to
>> 596 a variety of MIPS cores.
>> 597
>> 598 config RALINK
>> 599 bool "Ralink based machines"
>> 600 select CEVT_R4K
>> 601 select CSRC_R4K
>> 602 select BOOT_RAW
>> 603 select DMA_NONCOHERENT
>> 604 select IRQ_MIPS_CPU
>> 605 select USE_OF
>> 606 select SYS_HAS_CPU_MIPS32_R1
>> 607 select SYS_HAS_CPU_MIPS32_R2
>> 608 select SYS_SUPPORTS_32BIT_KERNEL
>> 609 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 610 select SYS_SUPPORTS_MIPS16
>> 611 select SYS_HAS_EARLY_PRINTK
>> 612 select CLKDEV_LOOKUP
>> 613 select ARCH_HAS_RESET_CONTROLLER
>> 614 select RESET_CONTROLLER
>> 615
>> 616 config SGI_IP22
>> 617 bool "SGI IP22 (Indy/Indigo2)"
>> 618 select FW_ARC
>> 619 select FW_ARC32
>> 620 select ARCH_MIGHT_HAVE_PC_SERIO
>> 621 select BOOT_ELF32
>> 622 select CEVT_R4K
>> 623 select CSRC_R4K
>> 624 select DEFAULT_SGI_PARTITION
>> 625 select DMA_NONCOHERENT
>> 626 select HW_HAS_EISA
>> 627 select I8253
>> 628 select I8259
>> 629 select IP22_CPU_SCACHE
>> 630 select IRQ_MIPS_CPU
>> 631 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 632 select SGI_HAS_I8042
>> 633 select SGI_HAS_INDYDOG
>> 634 select SGI_HAS_HAL2
>> 635 select SGI_HAS_SEEQ
>> 636 select SGI_HAS_WD93
>> 637 select SGI_HAS_ZILOG
>> 638 select SWAP_IO_SPACE
>> 639 select SYS_HAS_CPU_R4X00
>> 640 select SYS_HAS_CPU_R5000
>> 641 #
>> 642 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 643 # memory during early boot on some machines.
>> 644 #
>> 645 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 646 # for a more details discussion
>> 647 #
>> 648 # select SYS_HAS_EARLY_PRINTK
>> 649 select SYS_SUPPORTS_32BIT_KERNEL
>> 650 select SYS_SUPPORTS_64BIT_KERNEL
>> 651 select SYS_SUPPORTS_BIG_ENDIAN
>> 652 select MIPS_L1_CACHE_SHIFT_7
>> 653 help
>> 654 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 655 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 656 that runs on these, say Y here.
>> 657
>> 658 config SGI_IP27
>> 659 bool "SGI IP27 (Origin200/2000)"
>> 660 select FW_ARC
>> 661 select FW_ARC64
>> 662 select BOOT_ELF64
>> 663 select DEFAULT_SGI_PARTITION
>> 664 select DMA_COHERENT
>> 665 select SYS_HAS_EARLY_PRINTK
>> 666 select HW_HAS_PCI
>> 667 select NR_CPUS_DEFAULT_64
>> 668 select SYS_HAS_CPU_R10000
>> 669 select SYS_SUPPORTS_64BIT_KERNEL
>> 670 select SYS_SUPPORTS_BIG_ENDIAN
>> 671 select SYS_SUPPORTS_NUMA
>> 672 select SYS_SUPPORTS_SMP
>> 673 select MIPS_L1_CACHE_SHIFT_7
>> 674 help
>> 675 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 676 workstations. To compile a Linux kernel that runs on these, say Y
>> 677 here.
237 678
238 # https://github.com/llvm/llvm-project/commit/ !! 679 config SGI_IP28
239 config ARCH_HAS_BROKEN_DWARF5 !! 680 bool "SGI IP28 (Indigo2 R10k)"
240 def_bool y !! 681 select FW_ARC
241 depends on RISCV_USE_LINKER_RELAXATION !! 682 select FW_ARC64
242 # https://github.com/llvm/llvm-project !! 683 select ARCH_MIGHT_HAVE_PC_SERIO
243 depends on AS_IS_LLVM && AS_VERSION < !! 684 select BOOT_ELF64
244 # https://github.com/llvm/llvm-project !! 685 select CEVT_R4K
245 depends on LD_IS_LLD && LLD_VERSION < !! 686 select CSRC_R4K
>> 687 select DEFAULT_SGI_PARTITION
>> 688 select DMA_NONCOHERENT
>> 689 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 690 select IRQ_MIPS_CPU
>> 691 select HW_HAS_EISA
>> 692 select I8253
>> 693 select I8259
>> 694 select SGI_HAS_I8042
>> 695 select SGI_HAS_INDYDOG
>> 696 select SGI_HAS_HAL2
>> 697 select SGI_HAS_SEEQ
>> 698 select SGI_HAS_WD93
>> 699 select SGI_HAS_ZILOG
>> 700 select SWAP_IO_SPACE
>> 701 select SYS_HAS_CPU_R10000
>> 702 #
>> 703 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 704 # memory during early boot on some machines.
>> 705 #
>> 706 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 707 # for a more details discussion
>> 708 #
>> 709 # select SYS_HAS_EARLY_PRINTK
>> 710 select SYS_SUPPORTS_64BIT_KERNEL
>> 711 select SYS_SUPPORTS_BIG_ENDIAN
>> 712 select MIPS_L1_CACHE_SHIFT_7
>> 713 help
>> 714 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 715 kernel that runs on these, say Y here.
>> 716
>> 717 config SGI_IP32
>> 718 bool "SGI IP32 (O2)"
>> 719 select FW_ARC
>> 720 select FW_ARC32
>> 721 select BOOT_ELF32
>> 722 select CEVT_R4K
>> 723 select CSRC_R4K
>> 724 select DMA_NONCOHERENT
>> 725 select HW_HAS_PCI
>> 726 select IRQ_MIPS_CPU
>> 727 select R5000_CPU_SCACHE
>> 728 select RM7000_CPU_SCACHE
>> 729 select SYS_HAS_CPU_R5000
>> 730 select SYS_HAS_CPU_R10000 if BROKEN
>> 731 select SYS_HAS_CPU_RM7000
>> 732 select SYS_HAS_CPU_NEVADA
>> 733 select SYS_SUPPORTS_64BIT_KERNEL
>> 734 select SYS_SUPPORTS_BIG_ENDIAN
>> 735 help
>> 736 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 737
>> 738 config SIBYTE_CRHINE
>> 739 bool "Sibyte BCM91120C-CRhine"
>> 740 select BOOT_ELF32
>> 741 select DMA_COHERENT
>> 742 select SIBYTE_BCM1120
>> 743 select SWAP_IO_SPACE
>> 744 select SYS_HAS_CPU_SB1
>> 745 select SYS_SUPPORTS_BIG_ENDIAN
>> 746 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 747
>> 748 config SIBYTE_CARMEL
>> 749 bool "Sibyte BCM91120x-Carmel"
>> 750 select BOOT_ELF32
>> 751 select DMA_COHERENT
>> 752 select SIBYTE_BCM1120
>> 753 select SWAP_IO_SPACE
>> 754 select SYS_HAS_CPU_SB1
>> 755 select SYS_SUPPORTS_BIG_ENDIAN
>> 756 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 757
>> 758 config SIBYTE_CRHONE
>> 759 bool "Sibyte BCM91125C-CRhone"
>> 760 select BOOT_ELF32
>> 761 select DMA_COHERENT
>> 762 select SIBYTE_BCM1125
>> 763 select SWAP_IO_SPACE
>> 764 select SYS_HAS_CPU_SB1
>> 765 select SYS_SUPPORTS_BIG_ENDIAN
>> 766 select SYS_SUPPORTS_HIGHMEM
>> 767 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 768
>> 769 config SIBYTE_RHONE
>> 770 bool "Sibyte BCM91125E-Rhone"
>> 771 select BOOT_ELF32
>> 772 select DMA_COHERENT
>> 773 select SIBYTE_BCM1125H
>> 774 select SWAP_IO_SPACE
>> 775 select SYS_HAS_CPU_SB1
>> 776 select SYS_SUPPORTS_BIG_ENDIAN
>> 777 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 778
>> 779 config SIBYTE_SWARM
>> 780 bool "Sibyte BCM91250A-SWARM"
>> 781 select BOOT_ELF32
>> 782 select DMA_COHERENT
>> 783 select HAVE_PATA_PLATFORM
>> 784 select SIBYTE_SB1250
>> 785 select SWAP_IO_SPACE
>> 786 select SYS_HAS_CPU_SB1
>> 787 select SYS_SUPPORTS_BIG_ENDIAN
>> 788 select SYS_SUPPORTS_HIGHMEM
>> 789 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 790 select ZONE_DMA32 if 64BIT
246 791
247 config ARCH_MMAP_RND_BITS_MIN !! 792 config SIBYTE_LITTLESUR
248 default 18 if 64BIT !! 793 bool "Sibyte BCM91250C2-LittleSur"
249 default 8 !! 794 select BOOT_ELF32
>> 795 select DMA_COHERENT
>> 796 select HAVE_PATA_PLATFORM
>> 797 select SIBYTE_SB1250
>> 798 select SWAP_IO_SPACE
>> 799 select SYS_HAS_CPU_SB1
>> 800 select SYS_SUPPORTS_BIG_ENDIAN
>> 801 select SYS_SUPPORTS_HIGHMEM
>> 802 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 803
>> 804 config SIBYTE_SENTOSA
>> 805 bool "Sibyte BCM91250E-Sentosa"
>> 806 select BOOT_ELF32
>> 807 select DMA_COHERENT
>> 808 select SIBYTE_SB1250
>> 809 select SWAP_IO_SPACE
>> 810 select SYS_HAS_CPU_SB1
>> 811 select SYS_SUPPORTS_BIG_ENDIAN
>> 812 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 813
>> 814 config SIBYTE_BIGSUR
>> 815 bool "Sibyte BCM91480B-BigSur"
>> 816 select BOOT_ELF32
>> 817 select DMA_COHERENT
>> 818 select NR_CPUS_DEFAULT_4
>> 819 select SIBYTE_BCM1x80
>> 820 select SWAP_IO_SPACE
>> 821 select SYS_HAS_CPU_SB1
>> 822 select SYS_SUPPORTS_BIG_ENDIAN
>> 823 select SYS_SUPPORTS_HIGHMEM
>> 824 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 825 select ZONE_DMA32 if 64BIT
250 826
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 827 config SNI_RM
252 default 8 !! 828 bool "SNI RM200/300/400"
>> 829 select FW_ARC if CPU_LITTLE_ENDIAN
>> 830 select FW_ARC32 if CPU_LITTLE_ENDIAN
>> 831 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 832 select ARCH_MAY_HAVE_PC_FDC
>> 833 select ARCH_MIGHT_HAVE_PC_PARPORT
>> 834 select ARCH_MIGHT_HAVE_PC_SERIO
>> 835 select BOOT_ELF32
>> 836 select CEVT_R4K
>> 837 select CSRC_R4K
>> 838 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 839 select DMA_NONCOHERENT
>> 840 select GENERIC_ISA_DMA
>> 841 select HAVE_PCSPKR_PLATFORM
>> 842 select HW_HAS_EISA
>> 843 select HW_HAS_PCI
>> 844 select IRQ_MIPS_CPU
>> 845 select I8253
>> 846 select I8259
>> 847 select ISA
>> 848 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 849 select SYS_HAS_CPU_R4X00
>> 850 select SYS_HAS_CPU_R5000
>> 851 select SYS_HAS_CPU_R10000
>> 852 select R5000_CPU_SCACHE
>> 853 select SYS_HAS_EARLY_PRINTK
>> 854 select SYS_SUPPORTS_32BIT_KERNEL
>> 855 select SYS_SUPPORTS_64BIT_KERNEL
>> 856 select SYS_SUPPORTS_BIG_ENDIAN
>> 857 select SYS_SUPPORTS_HIGHMEM
>> 858 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 859 help
>> 860 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 861 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 862 Technology and now in turn merged with Fujitsu. Say Y here to
>> 863 support this machine type.
>> 864
>> 865 config MACH_TX39XX
>> 866 bool "Toshiba TX39 series based machines"
>> 867
>> 868 config MACH_TX49XX
>> 869 bool "Toshiba TX49 series based machines"
>> 870
>> 871 config MIKROTIK_RB532
>> 872 bool "Mikrotik RB532 boards"
>> 873 select CEVT_R4K
>> 874 select CSRC_R4K
>> 875 select DMA_NONCOHERENT
>> 876 select HW_HAS_PCI
>> 877 select IRQ_MIPS_CPU
>> 878 select SYS_HAS_CPU_MIPS32_R1
>> 879 select SYS_SUPPORTS_32BIT_KERNEL
>> 880 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 881 select SWAP_IO_SPACE
>> 882 select BOOT_RAW
>> 883 select GPIOLIB
>> 884 select MIPS_L1_CACHE_SHIFT_4
>> 885 help
>> 886 Support the Mikrotik(tm) RouterBoard 532 series,
>> 887 based on the IDT RC32434 SoC.
>> 888
>> 889 config CAVIUM_OCTEON_SOC
>> 890 bool "Cavium Networks Octeon SoC based boards"
>> 891 select CEVT_R4K
>> 892 select ARCH_HAS_PHYS_TO_DMA
>> 893 select ARCH_PHYS_ADDR_T_64BIT
>> 894 select DMA_COHERENT
>> 895 select SYS_SUPPORTS_64BIT_KERNEL
>> 896 select SYS_SUPPORTS_BIG_ENDIAN
>> 897 select EDAC_SUPPORT
>> 898 select EDAC_ATOMIC_SCRUB
>> 899 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 900 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
>> 901 select SYS_HAS_EARLY_PRINTK
>> 902 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 903 select HW_HAS_PCI
>> 904 select ZONE_DMA32
>> 905 select HOLES_IN_ZONE
>> 906 select GPIOLIB
>> 907 select LIBFDT
>> 908 select USE_OF
>> 909 select ARCH_SPARSEMEM_ENABLE
>> 910 select SYS_SUPPORTS_SMP
>> 911 select NR_CPUS_DEFAULT_64
>> 912 select MIPS_NR_CPU_NR_MAP_1024
>> 913 select BUILTIN_DTB
>> 914 select MTD_COMPLEX_MAPPINGS
>> 915 select SYS_SUPPORTS_RELOCATABLE
>> 916 help
>> 917 This option supports all of the Octeon reference boards from Cavium
>> 918 Networks. It builds a kernel that dynamically determines the Octeon
>> 919 CPU type and supports all known board reference implementations.
>> 920 Some of the supported boards are:
>> 921 EBT3000
>> 922 EBH3000
>> 923 EBH3100
>> 924 Thunder
>> 925 Kodama
>> 926 Hikari
>> 927 Say Y here for most Octeon reference boards.
>> 928
>> 929 config NLM_XLR_BOARD
>> 930 bool "Netlogic XLR/XLS based systems"
>> 931 select BOOT_ELF32
>> 932 select NLM_COMMON
>> 933 select SYS_HAS_CPU_XLR
>> 934 select SYS_SUPPORTS_SMP
>> 935 select HW_HAS_PCI
>> 936 select SWAP_IO_SPACE
>> 937 select SYS_SUPPORTS_32BIT_KERNEL
>> 938 select SYS_SUPPORTS_64BIT_KERNEL
>> 939 select ARCH_PHYS_ADDR_T_64BIT
>> 940 select SYS_SUPPORTS_BIG_ENDIAN
>> 941 select SYS_SUPPORTS_HIGHMEM
>> 942 select DMA_COHERENT
>> 943 select NR_CPUS_DEFAULT_32
>> 944 select CEVT_R4K
>> 945 select CSRC_R4K
>> 946 select IRQ_MIPS_CPU
>> 947 select ZONE_DMA32 if 64BIT
>> 948 select SYNC_R4K
>> 949 select SYS_HAS_EARLY_PRINTK
>> 950 select SYS_SUPPORTS_ZBOOT
>> 951 select SYS_SUPPORTS_ZBOOT_UART16550
>> 952 help
>> 953 Support for systems based on Netlogic XLR and XLS processors.
>> 954 Say Y here if you have a XLR or XLS based board.
>> 955
>> 956 config NLM_XLP_BOARD
>> 957 bool "Netlogic XLP based systems"
>> 958 select BOOT_ELF32
>> 959 select NLM_COMMON
>> 960 select SYS_HAS_CPU_XLP
>> 961 select SYS_SUPPORTS_SMP
>> 962 select HW_HAS_PCI
>> 963 select SYS_SUPPORTS_32BIT_KERNEL
>> 964 select SYS_SUPPORTS_64BIT_KERNEL
>> 965 select ARCH_PHYS_ADDR_T_64BIT
>> 966 select GPIOLIB
>> 967 select SYS_SUPPORTS_BIG_ENDIAN
>> 968 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 969 select SYS_SUPPORTS_HIGHMEM
>> 970 select DMA_COHERENT
>> 971 select NR_CPUS_DEFAULT_32
>> 972 select CEVT_R4K
>> 973 select CSRC_R4K
>> 974 select IRQ_MIPS_CPU
>> 975 select ZONE_DMA32 if 64BIT
>> 976 select SYNC_R4K
>> 977 select SYS_HAS_EARLY_PRINTK
>> 978 select USE_OF
>> 979 select SYS_SUPPORTS_ZBOOT
>> 980 select SYS_SUPPORTS_ZBOOT_UART16550
>> 981 help
>> 982 This board is based on Netlogic XLP Processor.
>> 983 Say Y here if you have a XLP based board.
>> 984
>> 985 config MIPS_PARAVIRT
>> 986 bool "Para-Virtualized guest system"
>> 987 select CEVT_R4K
>> 988 select CSRC_R4K
>> 989 select DMA_COHERENT
>> 990 select SYS_SUPPORTS_64BIT_KERNEL
>> 991 select SYS_SUPPORTS_32BIT_KERNEL
>> 992 select SYS_SUPPORTS_BIG_ENDIAN
>> 993 select SYS_SUPPORTS_SMP
>> 994 select NR_CPUS_DEFAULT_4
>> 995 select SYS_HAS_EARLY_PRINTK
>> 996 select SYS_HAS_CPU_MIPS32_R2
>> 997 select SYS_HAS_CPU_MIPS64_R2
>> 998 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 999 select HW_HAS_PCI
>> 1000 select SWAP_IO_SPACE
>> 1001 help
>> 1002 This option supports guest running under ????
253 1003
254 # max bits determined by the following formula !! 1004 endchoice
255 # VA_BITS - PAGE_SHIFT - 3 <<
256 config ARCH_MMAP_RND_BITS_MAX <<
257 default 24 if 64BIT # SV39 based <<
258 default 17 <<
259 1005
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 1006 source "arch/mips/alchemy/Kconfig"
261 default 17 !! 1007 source "arch/mips/ath25/Kconfig"
>> 1008 source "arch/mips/ath79/Kconfig"
>> 1009 source "arch/mips/bcm47xx/Kconfig"
>> 1010 source "arch/mips/bcm63xx/Kconfig"
>> 1011 source "arch/mips/bmips/Kconfig"
>> 1012 source "arch/mips/generic/Kconfig"
>> 1013 source "arch/mips/jazz/Kconfig"
>> 1014 source "arch/mips/jz4740/Kconfig"
>> 1015 source "arch/mips/lantiq/Kconfig"
>> 1016 source "arch/mips/lasat/Kconfig"
>> 1017 source "arch/mips/pic32/Kconfig"
>> 1018 source "arch/mips/pistachio/Kconfig"
>> 1019 source "arch/mips/pmcs-msp71xx/Kconfig"
>> 1020 source "arch/mips/ralink/Kconfig"
>> 1021 source "arch/mips/sgi-ip27/Kconfig"
>> 1022 source "arch/mips/sibyte/Kconfig"
>> 1023 source "arch/mips/txx9/Kconfig"
>> 1024 source "arch/mips/vr41xx/Kconfig"
>> 1025 source "arch/mips/cavium-octeon/Kconfig"
>> 1026 source "arch/mips/loongson32/Kconfig"
>> 1027 source "arch/mips/loongson64/Kconfig"
>> 1028 source "arch/mips/netlogic/Kconfig"
>> 1029 source "arch/mips/paravirt/Kconfig"
>> 1030
>> 1031 endmenu
>> 1032
>> 1033 config RWSEM_GENERIC_SPINLOCK
>> 1034 bool
>> 1035 default y
>> 1036
>> 1037 config RWSEM_XCHGADD_ALGORITHM
>> 1038 bool
262 1039
263 # set if we run in machine mode, cleared if we !! 1040 config GENERIC_HWEIGHT
264 config RISCV_M_MODE !! 1041 bool
265 bool "Build a kernel that runs in mach <<
266 depends on !MMU <<
267 default y 1042 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 1043
272 # set if we are running in S-mode and can use !! 1044 config GENERIC_CALIBRATE_DELAY
273 config RISCV_SBI <<
274 bool 1045 bool
275 depends on !RISCV_M_MODE <<
276 default y 1046 default y
277 1047
278 config MMU !! 1048 config SCHED_OMIT_FRAME_POINTER
279 bool "MMU-based Paged Memory Managemen !! 1049 bool
280 default y 1050 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 1051
285 config PAGE_OFFSET !! 1052 #
286 hex !! 1053 # Select some configuration options automatically based on user selections.
287 default 0x80000000 if !MMU && RISCV_M_ !! 1054 #
288 default 0x80200000 if !MMU !! 1055 config FW_ARC
289 default 0xc0000000 if 32BIT !! 1056 bool
290 default 0xff60000000000000 if 64BIT <<
291 <<
292 config KASAN_SHADOW_OFFSET <<
293 hex <<
294 depends on KASAN_GENERIC <<
295 default 0xdfffffff00000000 if 64BIT <<
296 default 0xffffffff if 32BIT <<
297 1057
298 config ARCH_FLATMEM_ENABLE !! 1058 config ARCH_MAY_HAVE_PC_FDC
299 def_bool !NUMA !! 1059 bool
300 1060
301 config ARCH_SPARSEMEM_ENABLE !! 1061 config BOOT_RAW
302 def_bool y !! 1062 bool
303 depends on MMU !! 1063
304 select SPARSEMEM_STATIC if 32BIT && SP !! 1064 config CEVT_BCM1480
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B !! 1065 bool
306 1066
307 config ARCH_SELECT_MEMORY_MODEL !! 1067 config CEVT_DS1287
308 def_bool ARCH_SPARSEMEM_ENABLE !! 1068 bool
>> 1069
>> 1070 config CEVT_GT641XX
>> 1071 bool
>> 1072
>> 1073 config CEVT_R4K
>> 1074 bool
>> 1075
>> 1076 config CEVT_SB1250
>> 1077 bool
>> 1078
>> 1079 config CEVT_TXX9
>> 1080 bool
>> 1081
>> 1082 config CSRC_BCM1480
>> 1083 bool
>> 1084
>> 1085 config CSRC_IOASIC
>> 1086 bool
>> 1087
>> 1088 config CSRC_R4K
>> 1089 bool
>> 1090
>> 1091 config CSRC_SB1250
>> 1092 bool
>> 1093
>> 1094 config MIPS_CLOCK_VSYSCALL
>> 1095 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
>> 1096
>> 1097 config GPIO_TXX9
>> 1098 select GPIOLIB
>> 1099 bool
>> 1100
>> 1101 config FW_CFE
>> 1102 bool
>> 1103
>> 1104 config ARCH_DMA_ADDR_T_64BIT
>> 1105 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
309 1106
310 config ARCH_SUPPORTS_UPROBES 1107 config ARCH_SUPPORTS_UPROBES
311 def_bool y !! 1108 bool
312 1109
313 config STACKTRACE_SUPPORT !! 1110 config DMA_MAYBE_COHERENT
314 def_bool y !! 1111 select DMA_NONCOHERENT
>> 1112 bool
315 1113
316 config GENERIC_BUG !! 1114 config DMA_PERDEV_COHERENT
317 def_bool y !! 1115 bool
318 depends on BUG !! 1116 select DMA_MAYBE_COHERENT
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 1117
321 config GENERIC_BUG_RELATIVE_POINTERS !! 1118 config DMA_COHERENT
322 bool 1119 bool
323 1120
324 config GENERIC_CALIBRATE_DELAY !! 1121 config DMA_NONCOHERENT
325 def_bool y !! 1122 bool
>> 1123 select NEED_DMA_MAP_STATE
326 1124
327 config GENERIC_CSUM !! 1125 config NEED_DMA_MAP_STATE
328 def_bool y !! 1126 bool
329 1127
330 config GENERIC_HWEIGHT !! 1128 config SYS_HAS_EARLY_PRINTK
331 def_bool y !! 1129 bool
332 1130
333 config FIX_EARLYCON_MEM !! 1131 config SYS_SUPPORTS_HOTPLUG_CPU
334 def_bool MMU !! 1132 bool
335 1133
336 config ILLEGAL_POINTER_VALUE !! 1134 config MIPS_BONITO64
337 hex !! 1135 bool
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 1136
341 config PGTABLE_LEVELS !! 1137 config MIPS_MSC
342 int !! 1138 bool
343 default 5 if 64BIT <<
344 default 2 <<
345 1139
346 config LOCKDEP_SUPPORT !! 1140 config MIPS_NILE4
347 def_bool y !! 1141 bool
348 1142
349 config RISCV_DMA_NONCOHERENT !! 1143 config SYNC_R4K
350 bool 1144 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 <<
355 select DMA_BOUNCE_UNALIGNED_KMALLOC if <<
356 1145
357 config RISCV_NONSTANDARD_CACHE_OPS !! 1146 config MIPS_MACHINE
>> 1147 def_bool n
>> 1148
>> 1149 config NO_IOPORT_MAP
>> 1150 def_bool n
>> 1151
>> 1152 config GENERIC_CSUM
358 bool 1153 bool
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 1154
363 config AS_HAS_INSN !! 1155 config GENERIC_ISA_DMA
364 def_bool $(as-instr,.insn r 51$(comma) !! 1156 bool
>> 1157 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1158 select ISA_DMA_API
365 1159
366 config AS_HAS_OPTION_ARCH !! 1160 config GENERIC_ISA_DMA_SUPPORT_BROKEN
367 # https://github.com/llvm/llvm-project !! 1161 bool
368 def_bool y !! 1162 select GENERIC_ISA_DMA
369 depends on $(as-instr, .option arch$(c <<
370 1163
371 source "arch/riscv/Kconfig.socs" !! 1164 config ISA_DMA_API
372 source "arch/riscv/Kconfig.errata" !! 1165 bool
373 1166
374 menu "Platform type" !! 1167 config HOLES_IN_ZONE
>> 1168 bool
375 1169
376 config NONPORTABLE !! 1170 config SYS_SUPPORTS_RELOCATABLE
377 bool "Allow configurations that result !! 1171 bool
378 help 1172 help
379 RISC-V kernel binaries are compatibl !! 1173 Selected if the platform supports relocating the kernel.
380 whenever possible, but there are som !! 1174 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
381 satisfied by configurations that res !! 1175 to allow access to command line and entropy sources.
382 not portable between systems. <<
383 1176
384 Selecting N does not guarantee kerne !! 1177 config MIPS_CBPF_JIT
385 systems. Selecting any of the optio !! 1178 def_bool y
386 result in kernel binaries that are u !! 1179 depends on BPF_JIT && HAVE_CBPF_JIT
387 systems. <<
388 1180
389 If unsure, say N. !! 1181 config MIPS_EBPF_JIT
>> 1182 def_bool y
>> 1183 depends on BPF_JIT && HAVE_EBPF_JIT
390 1184
>> 1185
>> 1186 #
>> 1187 # Endianness selection. Sufficiently obscure so many users don't know what to
>> 1188 # answer,so we try hard to limit the available choices. Also the use of a
>> 1189 # choice statement should be more obvious to the user.
>> 1190 #
391 choice 1191 choice
392 prompt "Base ISA" !! 1192 prompt "Endianness selection"
393 default ARCH_RV64I <<
394 help 1193 help
395 This selects the base ISA that this !! 1194 Some MIPS machines can be configured for either little or big endian
396 the target platform. !! 1195 byte order. These modes require different kernels and a different
397 !! 1196 Linux distribution. In general there is one preferred byteorder for a
398 config ARCH_RV32I !! 1197 particular system but some systems are just as commonly used in the
399 bool "RV32I" !! 1198 one or the other endianness.
400 depends on NONPORTABLE !! 1199
401 select 32BIT !! 1200 config CPU_BIG_ENDIAN
402 select GENERIC_LIB_ASHLDI3 !! 1201 bool "Big endian"
403 select GENERIC_LIB_ASHRDI3 !! 1202 depends on SYS_SUPPORTS_BIG_ENDIAN
404 select GENERIC_LIB_LSHRDI3 !! 1203
405 select GENERIC_LIB_UCMPDI2 !! 1204 config CPU_LITTLE_ENDIAN
406 !! 1205 bool "Little endian"
407 config ARCH_RV64I !! 1206 depends on SYS_SUPPORTS_LITTLE_ENDIAN
408 bool "RV64I" <<
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 1207
413 endchoice 1208 endchoice
414 1209
415 # We must be able to map all physical memory i !! 1210 config EXPORT_UASM
416 # is still a bit more efficient when generatin !! 1211 bool
417 # such that it can only map 2GiB of memory. <<
418 choice <<
419 prompt "Kernel Code Model" <<
420 default CMODEL_MEDLOW if 32BIT <<
421 default CMODEL_MEDANY if 64BIT <<
422 <<
423 config CMODEL_MEDLOW <<
424 bool "medium low code model" <<
425 config CMODEL_MEDANY <<
426 bool "medium any code model" <<
427 endchoice <<
428 1212
429 config MODULE_SECTIONS !! 1213 config SYS_SUPPORTS_APM_EMULATION
430 bool 1214 bool
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 1215
433 config SMP !! 1216 config SYS_SUPPORTS_BIG_ENDIAN
434 bool "Symmetric Multi-Processing" !! 1217 bool
435 help <<
436 This enables support for systems wit <<
437 you say N here, the kernel will run <<
438 multiprocessor machines, but will us <<
439 multiprocessor machine. If you say Y <<
440 on many, but not all, single process <<
441 processor machine, the kernel will r <<
442 here. <<
443 1218
444 If you don't know what to do here, s !! 1219 config SYS_SUPPORTS_LITTLE_ENDIAN
>> 1220 bool
445 1221
446 config SCHED_MC !! 1222 config SYS_SUPPORTS_HUGETLBFS
447 bool "Multi-core scheduler support" !! 1223 bool
448 depends on SMP !! 1224 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
449 help !! 1225 default y
450 Multi-core scheduler support improve <<
451 making when dealing with multi-core <<
452 increased overhead in some places. I <<
453 1226
454 config NR_CPUS !! 1227 config MIPS_HUGE_TLB_SUPPORT
455 int "Maximum number of CPUs (2-512)" !! 1228 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
456 depends on SMP <<
457 range 2 512 if !RISCV_SBI_V01 <<
458 range 2 32 if RISCV_SBI_V01 && 32BIT <<
459 range 2 64 if RISCV_SBI_V01 && 64BIT <<
460 default "32" if 32BIT <<
461 default "64" if 64BIT <<
462 1229
463 config HOTPLUG_CPU !! 1230 config IRQ_CPU_RM7K
464 bool "Support for hot-pluggable CPUs" !! 1231 bool
465 depends on SMP <<
466 select GENERIC_IRQ_MIGRATION <<
467 help <<
468 1232
469 Say Y here to experiment with turnin !! 1233 config IRQ_MSP_SLP
470 can be controlled through /sys/devic !! 1234 bool
471 1235
472 Say N if you want to disable CPU hot !! 1236 config IRQ_MSP_CIC
>> 1237 bool
473 1238
474 choice !! 1239 config IRQ_TXX9
475 prompt "CPU Tuning" !! 1240 bool
476 default TUNE_GENERIC <<
477 1241
478 config TUNE_GENERIC !! 1242 config IRQ_GT641XX
479 bool "generic" !! 1243 bool
480 1244
481 endchoice !! 1245 config PCI_GT64XXX_PCI0
>> 1246 bool
482 1247
483 # Common NUMA Features !! 1248 config NO_EXCEPT_FILL
484 config NUMA !! 1249 bool
485 bool "NUMA Memory Allocation and Sched <<
486 depends on SMP && MMU <<
487 select ARCH_SUPPORTS_NUMA_BALANCING <<
488 select GENERIC_ARCH_NUMA <<
489 select HAVE_SETUP_PER_CPU_AREA <<
490 select NEED_PER_CPU_EMBED_FIRST_CHUNK <<
491 select NEED_PER_CPU_PAGE_FIRST_CHUNK <<
492 select OF_NUMA <<
493 select USE_PERCPU_NUMA_NODE_ID <<
494 help <<
495 Enable NUMA (Non-Uniform Memory Acce <<
496 1250
497 The kernel will try to allocate memo !! 1251 config SOC_EMMA2RH
498 local memory of the CPU and add some !! 1252 bool
>> 1253 select CEVT_R4K
>> 1254 select CSRC_R4K
>> 1255 select DMA_NONCOHERENT
>> 1256 select IRQ_MIPS_CPU
>> 1257 select SWAP_IO_SPACE
>> 1258 select SYS_HAS_CPU_R5500
>> 1259 select SYS_SUPPORTS_32BIT_KERNEL
>> 1260 select SYS_SUPPORTS_64BIT_KERNEL
>> 1261 select SYS_SUPPORTS_BIG_ENDIAN
499 1262
500 config NODES_SHIFT !! 1263 config SOC_PNX833X
501 int "Maximum NUMA Nodes (as a power of !! 1264 bool
502 range 1 10 !! 1265 select CEVT_R4K
503 default "2" !! 1266 select CSRC_R4K
504 depends on NUMA !! 1267 select IRQ_MIPS_CPU
505 help !! 1268 select DMA_NONCOHERENT
506 Specify the maximum number of NUMA N !! 1269 select SYS_HAS_CPU_MIPS32_R2
507 system. Increases memory reserved t !! 1270 select SYS_SUPPORTS_32BIT_KERNEL
>> 1271 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 1272 select SYS_SUPPORTS_BIG_ENDIAN
>> 1273 select SYS_SUPPORTS_MIPS16
>> 1274 select CPU_MIPSR2_IRQ_VI
508 1275
509 config RISCV_ALTERNATIVE !! 1276 config SOC_PNX8335
510 bool 1277 bool
511 depends on !XIP_KERNEL !! 1278 select SOC_PNX833X
512 help <<
513 This Kconfig allows the kernel to au <<
514 erratum or cpufeature required by th <<
515 time. The code patching overhead is <<
516 once at boot and once on each module <<
517 1279
518 config RISCV_ALTERNATIVE_EARLY !! 1280 config MIPS_SPRAM
>> 1281 bool
>> 1282
>> 1283 config SWAP_IO_SPACE
519 bool 1284 bool
520 depends on RISCV_ALTERNATIVE <<
521 help <<
522 Allows early patching of the kernel <<
523 1285
524 config RISCV_ISA_C !! 1286 config SGI_HAS_INDYDOG
525 bool "Emit compressed instructions whe !! 1287 bool
>> 1288
>> 1289 config SGI_HAS_HAL2
>> 1290 bool
>> 1291
>> 1292 config SGI_HAS_SEEQ
>> 1293 bool
>> 1294
>> 1295 config SGI_HAS_WD93
>> 1296 bool
>> 1297
>> 1298 config SGI_HAS_ZILOG
>> 1299 bool
>> 1300
>> 1301 config SGI_HAS_I8042
>> 1302 bool
>> 1303
>> 1304 config DEFAULT_SGI_PARTITION
>> 1305 bool
>> 1306
>> 1307 config FW_ARC32
>> 1308 bool
>> 1309
>> 1310 config FW_SNIPROM
>> 1311 bool
>> 1312
>> 1313 config BOOT_ELF32
>> 1314 bool
>> 1315
>> 1316 config MIPS_L1_CACHE_SHIFT_4
>> 1317 bool
>> 1318
>> 1319 config MIPS_L1_CACHE_SHIFT_5
>> 1320 bool
>> 1321
>> 1322 config MIPS_L1_CACHE_SHIFT_6
>> 1323 bool
>> 1324
>> 1325 config MIPS_L1_CACHE_SHIFT_7
>> 1326 bool
>> 1327
>> 1328 config MIPS_L1_CACHE_SHIFT
>> 1329 int
>> 1330 default "7" if MIPS_L1_CACHE_SHIFT_7
>> 1331 default "6" if MIPS_L1_CACHE_SHIFT_6
>> 1332 default "5" if MIPS_L1_CACHE_SHIFT_5
>> 1333 default "4" if MIPS_L1_CACHE_SHIFT_4
>> 1334 default "5"
>> 1335
>> 1336 config HAVE_STD_PC_SERIAL_PORT
>> 1337 bool
>> 1338
>> 1339 config ARC_CONSOLE
>> 1340 bool "ARC console support"
>> 1341 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
>> 1342
>> 1343 config ARC_MEMORY
>> 1344 bool
>> 1345 depends on MACH_JAZZ || SNI_RM || SGI_IP32
>> 1346 default y
>> 1347
>> 1348 config ARC_PROMLIB
>> 1349 bool
>> 1350 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
526 default y 1351 default y
>> 1352
>> 1353 config FW_ARC64
>> 1354 bool
>> 1355
>> 1356 config BOOT_ELF64
>> 1357 bool
>> 1358
>> 1359 menu "CPU selection"
>> 1360
>> 1361 choice
>> 1362 prompt "CPU type"
>> 1363 default CPU_R4X00
>> 1364
>> 1365 config CPU_LOONGSON3
>> 1366 bool "Loongson 3 CPU"
>> 1367 depends on SYS_HAS_CPU_LOONGSON3
>> 1368 select CPU_SUPPORTS_64BIT_KERNEL
>> 1369 select CPU_SUPPORTS_HIGHMEM
>> 1370 select CPU_SUPPORTS_HUGEPAGES
>> 1371 select WEAK_ORDERING
>> 1372 select WEAK_REORDERING_BEYOND_LLSC
>> 1373 select MIPS_PGD_C0_CONTEXT
>> 1374 select MIPS_L1_CACHE_SHIFT_6
>> 1375 select GPIOLIB
527 help 1376 help
528 Adds "C" to the ISA subsets that the !! 1377 The Loongson 3 processor implements the MIPS64R2 instruction
529 when building Linux, which results i !! 1378 set with many extensions.
530 Linux binary. <<
531 1379
532 If you don't know what to do here, s !! 1380 config LOONGSON3_ENHANCEMENT
>> 1381 bool "New Loongson 3 CPU Enhancements"
>> 1382 default n
>> 1383 select CPU_MIPSR2
>> 1384 select CPU_HAS_PREFETCH
>> 1385 depends on CPU_LOONGSON3
>> 1386 help
>> 1387 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
>> 1388 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
>> 1389 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
>> 1390 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
>> 1391 Fast TLB refill support, etc.
>> 1392
>> 1393 This option enable those enhancements which are not probed at run
>> 1394 time. If you want a generic kernel to run on all Loongson 3 machines,
>> 1395 please say 'N' here. If you want a high-performance kernel to run on
>> 1396 new Loongson 3 machines only, please say 'Y' here.
>> 1397
>> 1398 config CPU_LOONGSON2E
>> 1399 bool "Loongson 2E"
>> 1400 depends on SYS_HAS_CPU_LOONGSON2E
>> 1401 select CPU_LOONGSON2
>> 1402 help
>> 1403 The Loongson 2E processor implements the MIPS III instruction set
>> 1404 with many extensions.
>> 1405
>> 1406 It has an internal FPGA northbridge, which is compatible to
>> 1407 bonito64.
>> 1408
>> 1409 config CPU_LOONGSON2F
>> 1410 bool "Loongson 2F"
>> 1411 depends on SYS_HAS_CPU_LOONGSON2F
>> 1412 select CPU_LOONGSON2
>> 1413 select GPIOLIB
>> 1414 help
>> 1415 The Loongson 2F processor implements the MIPS III instruction set
>> 1416 with many extensions.
>> 1417
>> 1418 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
>> 1419 have a similar programming interface with FPGA northbridge used in
>> 1420 Loongson2E.
>> 1421
>> 1422 config CPU_LOONGSON1B
>> 1423 bool "Loongson 1B"
>> 1424 depends on SYS_HAS_CPU_LOONGSON1B
>> 1425 select CPU_LOONGSON1
>> 1426 select LEDS_GPIO_REGISTER
>> 1427 help
>> 1428 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> 1429 release 2 instruction set.
>> 1430
>> 1431 config CPU_LOONGSON1C
>> 1432 bool "Loongson 1C"
>> 1433 depends on SYS_HAS_CPU_LOONGSON1C
>> 1434 select CPU_LOONGSON1
>> 1435 select LEDS_GPIO_REGISTER
>> 1436 help
>> 1437 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
>> 1438 release 2 instruction set.
>> 1439
>> 1440 config CPU_MIPS32_R1
>> 1441 bool "MIPS32 Release 1"
>> 1442 depends on SYS_HAS_CPU_MIPS32_R1
>> 1443 select CPU_HAS_PREFETCH
>> 1444 select CPU_SUPPORTS_32BIT_KERNEL
>> 1445 select CPU_SUPPORTS_HIGHMEM
>> 1446 help
>> 1447 Choose this option to build a kernel for release 1 or later of the
>> 1448 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1449 MIPS processor are based on a MIPS32 processor. If you know the
>> 1450 specific type of processor in your system, choose those that one
>> 1451 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1452 Release 2 of the MIPS32 architecture is available since several
>> 1453 years so chances are you even have a MIPS32 Release 2 processor
>> 1454 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1455 performance.
>> 1456
>> 1457 config CPU_MIPS32_R2
>> 1458 bool "MIPS32 Release 2"
>> 1459 depends on SYS_HAS_CPU_MIPS32_R2
>> 1460 select CPU_HAS_PREFETCH
>> 1461 select CPU_SUPPORTS_32BIT_KERNEL
>> 1462 select CPU_SUPPORTS_HIGHMEM
>> 1463 select CPU_SUPPORTS_MSA
>> 1464 select HAVE_KVM
>> 1465 help
>> 1466 Choose this option to build a kernel for release 2 or later of the
>> 1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1468 MIPS processor are based on a MIPS32 processor. If you know the
>> 1469 specific type of processor in your system, choose those that one
>> 1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1471
>> 1472 config CPU_MIPS32_R6
>> 1473 bool "MIPS32 Release 6"
>> 1474 depends on SYS_HAS_CPU_MIPS32_R6
>> 1475 select CPU_HAS_PREFETCH
>> 1476 select CPU_SUPPORTS_32BIT_KERNEL
>> 1477 select CPU_SUPPORTS_HIGHMEM
>> 1478 select CPU_SUPPORTS_MSA
>> 1479 select GENERIC_CSUM
>> 1480 select HAVE_KVM
>> 1481 select MIPS_O32_FP64_SUPPORT
>> 1482 help
>> 1483 Choose this option to build a kernel for release 6 or later of the
>> 1484 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1485 family, are based on a MIPS32r6 processor. If you own an older
>> 1486 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1487
>> 1488 config CPU_MIPS64_R1
>> 1489 bool "MIPS64 Release 1"
>> 1490 depends on SYS_HAS_CPU_MIPS64_R1
>> 1491 select CPU_HAS_PREFETCH
>> 1492 select CPU_SUPPORTS_32BIT_KERNEL
>> 1493 select CPU_SUPPORTS_64BIT_KERNEL
>> 1494 select CPU_SUPPORTS_HIGHMEM
>> 1495 select CPU_SUPPORTS_HUGEPAGES
>> 1496 help
>> 1497 Choose this option to build a kernel for release 1 or later of the
>> 1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1499 MIPS processor are based on a MIPS64 processor. If you know the
>> 1500 specific type of processor in your system, choose those that one
>> 1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1502 Release 2 of the MIPS64 architecture is available since several
>> 1503 years so chances are you even have a MIPS64 Release 2 processor
>> 1504 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1505 performance.
>> 1506
>> 1507 config CPU_MIPS64_R2
>> 1508 bool "MIPS64 Release 2"
>> 1509 depends on SYS_HAS_CPU_MIPS64_R2
>> 1510 select CPU_HAS_PREFETCH
>> 1511 select CPU_SUPPORTS_32BIT_KERNEL
>> 1512 select CPU_SUPPORTS_64BIT_KERNEL
>> 1513 select CPU_SUPPORTS_HIGHMEM
>> 1514 select CPU_SUPPORTS_HUGEPAGES
>> 1515 select CPU_SUPPORTS_MSA
>> 1516 select HAVE_KVM
>> 1517 help
>> 1518 Choose this option to build a kernel for release 2 or later of the
>> 1519 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1520 MIPS processor are based on a MIPS64 processor. If you know the
>> 1521 specific type of processor in your system, choose those that one
>> 1522 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1523
>> 1524 config CPU_MIPS64_R6
>> 1525 bool "MIPS64 Release 6"
>> 1526 depends on SYS_HAS_CPU_MIPS64_R6
>> 1527 select CPU_HAS_PREFETCH
>> 1528 select CPU_SUPPORTS_32BIT_KERNEL
>> 1529 select CPU_SUPPORTS_64BIT_KERNEL
>> 1530 select CPU_SUPPORTS_HIGHMEM
>> 1531 select CPU_SUPPORTS_MSA
>> 1532 select GENERIC_CSUM
>> 1533 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1534 select HAVE_KVM
>> 1535 help
>> 1536 Choose this option to build a kernel for release 6 or later of the
>> 1537 MIPS64 architecture. New MIPS processors, starting with the Warrior
>> 1538 family, are based on a MIPS64r6 processor. If you own an older
>> 1539 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
>> 1540
>> 1541 config CPU_R3000
>> 1542 bool "R3000"
>> 1543 depends on SYS_HAS_CPU_R3000
>> 1544 select CPU_HAS_WB
>> 1545 select CPU_SUPPORTS_32BIT_KERNEL
>> 1546 select CPU_SUPPORTS_HIGHMEM
>> 1547 help
>> 1548 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1549 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1550 *not* work on R4000 machines and vice versa. However, since most
>> 1551 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1552 might be a safe bet. If the resulting kernel does not work,
>> 1553 try to recompile with R3000.
>> 1554
>> 1555 config CPU_TX39XX
>> 1556 bool "R39XX"
>> 1557 depends on SYS_HAS_CPU_TX39XX
>> 1558 select CPU_SUPPORTS_32BIT_KERNEL
>> 1559
>> 1560 config CPU_VR41XX
>> 1561 bool "R41xx"
>> 1562 depends on SYS_HAS_CPU_VR41XX
>> 1563 select CPU_SUPPORTS_32BIT_KERNEL
>> 1564 select CPU_SUPPORTS_64BIT_KERNEL
>> 1565 help
>> 1566 The options selects support for the NEC VR4100 series of processors.
>> 1567 Only choose this option if you have one of these processors as a
>> 1568 kernel built with this option will not run on any other type of
>> 1569 processor or vice versa.
>> 1570
>> 1571 config CPU_R4300
>> 1572 bool "R4300"
>> 1573 depends on SYS_HAS_CPU_R4300
>> 1574 select CPU_SUPPORTS_32BIT_KERNEL
>> 1575 select CPU_SUPPORTS_64BIT_KERNEL
>> 1576 help
>> 1577 MIPS Technologies R4300-series processors.
>> 1578
>> 1579 config CPU_R4X00
>> 1580 bool "R4x00"
>> 1581 depends on SYS_HAS_CPU_R4X00
>> 1582 select CPU_SUPPORTS_32BIT_KERNEL
>> 1583 select CPU_SUPPORTS_64BIT_KERNEL
>> 1584 select CPU_SUPPORTS_HUGEPAGES
>> 1585 help
>> 1586 MIPS Technologies R4000-series processors other than 4300, including
>> 1587 the R4000, R4400, R4600, and 4700.
>> 1588
>> 1589 config CPU_TX49XX
>> 1590 bool "R49XX"
>> 1591 depends on SYS_HAS_CPU_TX49XX
>> 1592 select CPU_HAS_PREFETCH
>> 1593 select CPU_SUPPORTS_32BIT_KERNEL
>> 1594 select CPU_SUPPORTS_64BIT_KERNEL
>> 1595 select CPU_SUPPORTS_HUGEPAGES
>> 1596
>> 1597 config CPU_R5000
>> 1598 bool "R5000"
>> 1599 depends on SYS_HAS_CPU_R5000
>> 1600 select CPU_SUPPORTS_32BIT_KERNEL
>> 1601 select CPU_SUPPORTS_64BIT_KERNEL
>> 1602 select CPU_SUPPORTS_HUGEPAGES
>> 1603 help
>> 1604 MIPS Technologies R5000-series processors other than the Nevada.
>> 1605
>> 1606 config CPU_R5432
>> 1607 bool "R5432"
>> 1608 depends on SYS_HAS_CPU_R5432
>> 1609 select CPU_SUPPORTS_32BIT_KERNEL
>> 1610 select CPU_SUPPORTS_64BIT_KERNEL
>> 1611 select CPU_SUPPORTS_HUGEPAGES
>> 1612
>> 1613 config CPU_R5500
>> 1614 bool "R5500"
>> 1615 depends on SYS_HAS_CPU_R5500
>> 1616 select CPU_SUPPORTS_32BIT_KERNEL
>> 1617 select CPU_SUPPORTS_64BIT_KERNEL
>> 1618 select CPU_SUPPORTS_HUGEPAGES
>> 1619 help
>> 1620 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1621 instruction set.
>> 1622
>> 1623 config CPU_NEVADA
>> 1624 bool "RM52xx"
>> 1625 depends on SYS_HAS_CPU_NEVADA
>> 1626 select CPU_SUPPORTS_32BIT_KERNEL
>> 1627 select CPU_SUPPORTS_64BIT_KERNEL
>> 1628 select CPU_SUPPORTS_HUGEPAGES
>> 1629 help
>> 1630 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1631
>> 1632 config CPU_R8000
>> 1633 bool "R8000"
>> 1634 depends on SYS_HAS_CPU_R8000
>> 1635 select CPU_HAS_PREFETCH
>> 1636 select CPU_SUPPORTS_64BIT_KERNEL
>> 1637 help
>> 1638 MIPS Technologies R8000 processors. Note these processors are
>> 1639 uncommon and the support for them is incomplete.
>> 1640
>> 1641 config CPU_R10000
>> 1642 bool "R10000"
>> 1643 depends on SYS_HAS_CPU_R10000
>> 1644 select CPU_HAS_PREFETCH
>> 1645 select CPU_SUPPORTS_32BIT_KERNEL
>> 1646 select CPU_SUPPORTS_64BIT_KERNEL
>> 1647 select CPU_SUPPORTS_HIGHMEM
>> 1648 select CPU_SUPPORTS_HUGEPAGES
>> 1649 help
>> 1650 MIPS Technologies R10000-series processors.
>> 1651
>> 1652 config CPU_RM7000
>> 1653 bool "RM7000"
>> 1654 depends on SYS_HAS_CPU_RM7000
>> 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
>> 1661 config CPU_SB1
>> 1662 bool "SB1"
>> 1663 depends on SYS_HAS_CPU_SB1
>> 1664 select CPU_SUPPORTS_32BIT_KERNEL
>> 1665 select CPU_SUPPORTS_64BIT_KERNEL
>> 1666 select CPU_SUPPORTS_HIGHMEM
>> 1667 select CPU_SUPPORTS_HUGEPAGES
>> 1668 select WEAK_ORDERING
>> 1669
>> 1670 config CPU_CAVIUM_OCTEON
>> 1671 bool "Cavium Octeon processor"
>> 1672 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1673 select CPU_HAS_PREFETCH
>> 1674 select CPU_SUPPORTS_64BIT_KERNEL
>> 1675 select WEAK_ORDERING
>> 1676 select CPU_SUPPORTS_HIGHMEM
>> 1677 select CPU_SUPPORTS_HUGEPAGES
>> 1678 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1679 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1680 select MIPS_L1_CACHE_SHIFT_7
>> 1681 select HAVE_KVM
>> 1682 help
>> 1683 The Cavium Octeon processor is a highly integrated chip containing
>> 1684 many ethernet hardware widgets for networking tasks. The processor
>> 1685 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1686 Full details can be found at http://www.caviumnetworks.com.
>> 1687
>> 1688 config CPU_BMIPS
>> 1689 bool "Broadcom BMIPS"
>> 1690 depends on SYS_HAS_CPU_BMIPS
>> 1691 select CPU_MIPS32
>> 1692 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
>> 1693 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
>> 1694 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
>> 1695 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
>> 1696 select CPU_SUPPORTS_32BIT_KERNEL
>> 1697 select DMA_NONCOHERENT
>> 1698 select IRQ_MIPS_CPU
>> 1699 select SWAP_IO_SPACE
>> 1700 select WEAK_ORDERING
>> 1701 select CPU_SUPPORTS_HIGHMEM
>> 1702 select CPU_HAS_PREFETCH
>> 1703 select CPU_SUPPORTS_CPUFREQ
>> 1704 select MIPS_EXTERNAL_TIMER
>> 1705 help
>> 1706 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
>> 1707
>> 1708 config CPU_XLR
>> 1709 bool "Netlogic XLR SoC"
>> 1710 depends on SYS_HAS_CPU_XLR
>> 1711 select CPU_SUPPORTS_32BIT_KERNEL
>> 1712 select CPU_SUPPORTS_64BIT_KERNEL
>> 1713 select CPU_SUPPORTS_HIGHMEM
>> 1714 select CPU_SUPPORTS_HUGEPAGES
>> 1715 select WEAK_ORDERING
>> 1716 select WEAK_REORDERING_BEYOND_LLSC
>> 1717 help
>> 1718 Netlogic Microsystems XLR/XLS processors.
>> 1719
>> 1720 config CPU_XLP
>> 1721 bool "Netlogic XLP SoC"
>> 1722 depends on SYS_HAS_CPU_XLP
>> 1723 select CPU_SUPPORTS_32BIT_KERNEL
>> 1724 select CPU_SUPPORTS_64BIT_KERNEL
>> 1725 select CPU_SUPPORTS_HIGHMEM
>> 1726 select WEAK_ORDERING
>> 1727 select WEAK_REORDERING_BEYOND_LLSC
>> 1728 select CPU_HAS_PREFETCH
>> 1729 select CPU_MIPSR2
>> 1730 select CPU_SUPPORTS_HUGEPAGES
>> 1731 select MIPS_ASID_BITS_VARIABLE
>> 1732 help
>> 1733 Netlogic Microsystems XLP processors.
>> 1734 endchoice
533 1735
534 config RISCV_ISA_SVNAPOT !! 1736 config CPU_MIPS32_3_5_FEATURES
535 bool "Svnapot extension support for su !! 1737 bool "MIPS32 Release 3.5 Features"
536 depends on 64BIT && MMU !! 1738 depends on SYS_HAS_CPU_MIPS32_R3_5
537 depends on RISCV_ALTERNATIVE !! 1739 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
538 default y !! 1740 help
>> 1741 Choose this option to build a kernel for release 2 or later of the
>> 1742 MIPS32 architecture including features from the 3.5 release such as
>> 1743 support for Enhanced Virtual Addressing (EVA).
>> 1744
>> 1745 config CPU_MIPS32_3_5_EVA
>> 1746 bool "Enhanced Virtual Addressing (EVA)"
>> 1747 depends on CPU_MIPS32_3_5_FEATURES
>> 1748 select EVA
>> 1749 default y
>> 1750 help
>> 1751 Choose this option if you want to enable the Enhanced Virtual
>> 1752 Addressing (EVA) on your MIPS32 core (such as proAptiv).
>> 1753 One of its primary benefits is an increase in the maximum size
>> 1754 of lowmem (up to 3GB). If unsure, say 'N' here.
>> 1755
>> 1756 config CPU_MIPS32_R5_FEATURES
>> 1757 bool "MIPS32 Release 5 Features"
>> 1758 depends on SYS_HAS_CPU_MIPS32_R5
>> 1759 depends on CPU_MIPS32_R2
>> 1760 help
>> 1761 Choose this option to build a kernel for release 2 or later of the
>> 1762 MIPS32 architecture including features from release 5 such as
>> 1763 support for Extended Physical Addressing (XPA).
>> 1764
>> 1765 config CPU_MIPS32_R5_XPA
>> 1766 bool "Extended Physical Addressing (XPA)"
>> 1767 depends on CPU_MIPS32_R5_FEATURES
>> 1768 depends on !EVA
>> 1769 depends on !PAGE_SIZE_4KB
>> 1770 depends on SYS_SUPPORTS_HIGHMEM
>> 1771 select XPA
>> 1772 select HIGHMEM
>> 1773 select ARCH_PHYS_ADDR_T_64BIT
>> 1774 default n
539 help 1775 help
540 Allow kernel to detect the Svnapot I !! 1776 Choose this option if you want to enable the Extended Physical
541 time and enable its usage. !! 1777 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
>> 1778 benefit is to increase physical addressing equal to or greater
>> 1779 than 40 bits. Note that this has the side effect of turning on
>> 1780 64-bit addressing which in turn makes the PTEs 64-bit in size.
>> 1781 If unsure, say 'N' here.
542 1782
543 The Svnapot extension is used to mar !! 1783 if CPU_LOONGSON2F
544 of contiguous virtual-to-physical tr !! 1784 config CPU_NOP_WORKAROUNDS
545 aligned power-of-2 (NAPOT) granulari !! 1785 bool
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 1786
551 If you don't know what to do here, s !! 1787 config CPU_JUMP_WORKAROUNDS
>> 1788 bool
552 1789
553 config RISCV_ISA_SVPBMT !! 1790 config CPU_LOONGSON2F_WORKAROUNDS
554 bool "Svpbmt extension support for sup !! 1791 bool "Loongson 2F Workarounds"
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y 1792 default y
>> 1793 select CPU_NOP_WORKAROUNDS
>> 1794 select CPU_JUMP_WORKAROUNDS
558 help 1795 help
559 Adds support to dynamically detect !! 1796 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
560 ISA-extension (Supervisor-mode: pag !! 1797 require workarounds. Without workarounds the system may hang
561 enable its usage. !! 1798 unexpectedly. For more information please refer to the gas
>> 1799 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
>> 1800
>> 1801 Loongson 2F03 and later have fixed these issues and no workarounds
>> 1802 are needed. The workarounds have no significant side effect on them
>> 1803 but may decrease the performance of the system so this option should
>> 1804 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1805 systems.
562 1806
563 The memory type for a page contains !! 1807 If unsure, please say Y.
564 that indicate the cacheability, ide !! 1808 endif # CPU_LOONGSON2F
565 properties for access to that page. <<
566 1809
567 The Svpbmt extension is only availa !! 1810 config SYS_SUPPORTS_ZBOOT
>> 1811 bool
>> 1812 select HAVE_KERNEL_GZIP
>> 1813 select HAVE_KERNEL_BZIP2
>> 1814 select HAVE_KERNEL_LZ4
>> 1815 select HAVE_KERNEL_LZMA
>> 1816 select HAVE_KERNEL_LZO
>> 1817 select HAVE_KERNEL_XZ
568 1818
569 If you don't know what to do here, !! 1819 config SYS_SUPPORTS_ZBOOT_UART16550
>> 1820 bool
>> 1821 select SYS_SUPPORTS_ZBOOT
570 1822
571 config TOOLCHAIN_HAS_V !! 1823 config SYS_SUPPORTS_ZBOOT_UART_PROM
>> 1824 bool
>> 1825 select SYS_SUPPORTS_ZBOOT
>> 1826
>> 1827 config CPU_LOONGSON2
>> 1828 bool
>> 1829 select CPU_SUPPORTS_32BIT_KERNEL
>> 1830 select CPU_SUPPORTS_64BIT_KERNEL
>> 1831 select CPU_SUPPORTS_HIGHMEM
>> 1832 select CPU_SUPPORTS_HUGEPAGES
>> 1833
>> 1834 config CPU_LOONGSON1
>> 1835 bool
>> 1836 select CPU_MIPS32
>> 1837 select CPU_MIPSR2
>> 1838 select CPU_HAS_PREFETCH
>> 1839 select CPU_SUPPORTS_32BIT_KERNEL
>> 1840 select CPU_SUPPORTS_HIGHMEM
>> 1841 select CPU_SUPPORTS_CPUFREQ
>> 1842
>> 1843 config CPU_BMIPS32_3300
>> 1844 select SMP_UP if SMP
>> 1845 bool
>> 1846
>> 1847 config CPU_BMIPS4350
>> 1848 bool
>> 1849 select SYS_SUPPORTS_SMP
>> 1850 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1851
>> 1852 config CPU_BMIPS4380
>> 1853 bool
>> 1854 select MIPS_L1_CACHE_SHIFT_6
>> 1855 select SYS_SUPPORTS_SMP
>> 1856 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1857 select CPU_HAS_RIXI
>> 1858
>> 1859 config CPU_BMIPS5000
>> 1860 bool
>> 1861 select MIPS_CPU_SCACHE
>> 1862 select MIPS_L1_CACHE_SHIFT_7
>> 1863 select SYS_SUPPORTS_SMP
>> 1864 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1865 select CPU_HAS_RIXI
>> 1866
>> 1867 config SYS_HAS_CPU_LOONGSON3
>> 1868 bool
>> 1869 select CPU_SUPPORTS_CPUFREQ
>> 1870 select CPU_HAS_RIXI
>> 1871
>> 1872 config SYS_HAS_CPU_LOONGSON2E
>> 1873 bool
>> 1874
>> 1875 config SYS_HAS_CPU_LOONGSON2F
>> 1876 bool
>> 1877 select CPU_SUPPORTS_CPUFREQ
>> 1878 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1879 select CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 1880
>> 1881 config SYS_HAS_CPU_LOONGSON1B
>> 1882 bool
>> 1883
>> 1884 config SYS_HAS_CPU_LOONGSON1C
>> 1885 bool
>> 1886
>> 1887 config SYS_HAS_CPU_MIPS32_R1
>> 1888 bool
>> 1889
>> 1890 config SYS_HAS_CPU_MIPS32_R2
>> 1891 bool
>> 1892
>> 1893 config SYS_HAS_CPU_MIPS32_R3_5
>> 1894 bool
>> 1895
>> 1896 config SYS_HAS_CPU_MIPS32_R5
>> 1897 bool
>> 1898
>> 1899 config SYS_HAS_CPU_MIPS32_R6
>> 1900 bool
>> 1901
>> 1902 config SYS_HAS_CPU_MIPS64_R1
>> 1903 bool
>> 1904
>> 1905 config SYS_HAS_CPU_MIPS64_R2
>> 1906 bool
>> 1907
>> 1908 config SYS_HAS_CPU_MIPS64_R6
>> 1909 bool
>> 1910
>> 1911 config SYS_HAS_CPU_R3000
>> 1912 bool
>> 1913
>> 1914 config SYS_HAS_CPU_TX39XX
>> 1915 bool
>> 1916
>> 1917 config SYS_HAS_CPU_VR41XX
>> 1918 bool
>> 1919
>> 1920 config SYS_HAS_CPU_R4300
>> 1921 bool
>> 1922
>> 1923 config SYS_HAS_CPU_R4X00
>> 1924 bool
>> 1925
>> 1926 config SYS_HAS_CPU_TX49XX
572 bool 1927 bool
573 default y <<
574 depends on !64BIT || $(cc-option,-mabi <<
575 depends on !32BIT || $(cc-option,-mabi <<
576 depends on LLD_VERSION >= 140000 || LD <<
577 depends on AS_HAS_OPTION_ARCH <<
578 1928
579 config RISCV_ISA_V !! 1929 config SYS_HAS_CPU_R5000
580 bool "VECTOR extension support" !! 1930 bool
581 depends on TOOLCHAIN_HAS_V !! 1931
582 depends on FPU !! 1932 config SYS_HAS_CPU_R5432
583 select DYNAMIC_SIGFRAME !! 1933 bool
>> 1934
>> 1935 config SYS_HAS_CPU_R5500
>> 1936 bool
>> 1937
>> 1938 config SYS_HAS_CPU_NEVADA
>> 1939 bool
>> 1940
>> 1941 config SYS_HAS_CPU_R8000
>> 1942 bool
>> 1943
>> 1944 config SYS_HAS_CPU_R10000
>> 1945 bool
>> 1946
>> 1947 config SYS_HAS_CPU_RM7000
>> 1948 bool
>> 1949
>> 1950 config SYS_HAS_CPU_SB1
>> 1951 bool
>> 1952
>> 1953 config SYS_HAS_CPU_CAVIUM_OCTEON
>> 1954 bool
>> 1955
>> 1956 config SYS_HAS_CPU_BMIPS
>> 1957 bool
>> 1958
>> 1959 config SYS_HAS_CPU_BMIPS32_3300
>> 1960 bool
>> 1961 select SYS_HAS_CPU_BMIPS
>> 1962
>> 1963 config SYS_HAS_CPU_BMIPS4350
>> 1964 bool
>> 1965 select SYS_HAS_CPU_BMIPS
>> 1966
>> 1967 config SYS_HAS_CPU_BMIPS4380
>> 1968 bool
>> 1969 select SYS_HAS_CPU_BMIPS
>> 1970
>> 1971 config SYS_HAS_CPU_BMIPS5000
>> 1972 bool
>> 1973 select SYS_HAS_CPU_BMIPS
>> 1974
>> 1975 config SYS_HAS_CPU_XLR
>> 1976 bool
>> 1977
>> 1978 config SYS_HAS_CPU_XLP
>> 1979 bool
>> 1980
>> 1981 config MIPS_MALTA_PM
>> 1982 depends on MIPS_MALTA
>> 1983 depends on PCI
>> 1984 bool
584 default y 1985 default y
>> 1986
>> 1987 #
>> 1988 # CPU may reorder R->R, R->W, W->R, W->W
>> 1989 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 1990 #
>> 1991 config WEAK_ORDERING
>> 1992 bool
>> 1993
>> 1994 #
>> 1995 # CPU may reorder reads and writes beyond LL/SC
>> 1996 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 1997 #
>> 1998 config WEAK_REORDERING_BEYOND_LLSC
>> 1999 bool
>> 2000 endmenu
>> 2001
>> 2002 #
>> 2003 # These two indicate any level of the MIPS32 and MIPS64 architecture
>> 2004 #
>> 2005 config CPU_MIPS32
>> 2006 bool
>> 2007 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
>> 2008
>> 2009 config CPU_MIPS64
>> 2010 bool
>> 2011 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
>> 2012
>> 2013 #
>> 2014 # These two indicate the revision of the architecture, either Release 1 or Release 2
>> 2015 #
>> 2016 config CPU_MIPSR1
>> 2017 bool
>> 2018 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
>> 2019
>> 2020 config CPU_MIPSR2
>> 2021 bool
>> 2022 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
>> 2023 select CPU_HAS_RIXI
>> 2024 select MIPS_SPRAM
>> 2025
>> 2026 config CPU_MIPSR6
>> 2027 bool
>> 2028 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
>> 2029 select CPU_HAS_RIXI
>> 2030 select HAVE_ARCH_BITREVERSE
>> 2031 select MIPS_ASID_BITS_VARIABLE
>> 2032 select MIPS_CRC_SUPPORT
>> 2033 select MIPS_SPRAM
>> 2034
>> 2035 config EVA
>> 2036 bool
>> 2037
>> 2038 config XPA
>> 2039 bool
>> 2040
>> 2041 config SYS_SUPPORTS_32BIT_KERNEL
>> 2042 bool
>> 2043 config SYS_SUPPORTS_64BIT_KERNEL
>> 2044 bool
>> 2045 config CPU_SUPPORTS_32BIT_KERNEL
>> 2046 bool
>> 2047 config CPU_SUPPORTS_64BIT_KERNEL
>> 2048 bool
>> 2049 config CPU_SUPPORTS_CPUFREQ
>> 2050 bool
>> 2051 config CPU_SUPPORTS_ADDRWINCFG
>> 2052 bool
>> 2053 config CPU_SUPPORTS_HUGEPAGES
>> 2054 bool
>> 2055 config CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 2056 bool
>> 2057 config MIPS_PGD_C0_CONTEXT
>> 2058 bool
>> 2059 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
>> 2060
>> 2061 #
>> 2062 # Set to y for ptrace access to watch registers.
>> 2063 #
>> 2064 config HARDWARE_WATCHPOINTS
>> 2065 bool
>> 2066 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
>> 2067
>> 2068 menu "Kernel type"
>> 2069
>> 2070 choice
>> 2071 prompt "Kernel code model"
585 help 2072 help
586 Say N here if you want to disable al !! 2073 You should only select this option if you have a workload that
587 in the kernel. !! 2074 actually benefits from 64-bit processing or if your machine has
>> 2075 large memory. You will only be presented a single option in this
>> 2076 menu if your system does not support both 32-bit and 64-bit kernels.
588 2077
589 If you don't know what to do here, s !! 2078 config 32BIT
>> 2079 bool "32-bit kernel"
>> 2080 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
>> 2081 select TRAD_SIGNALS
>> 2082 help
>> 2083 Select this option if you want to build a 32-bit kernel.
590 2084
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 2085 config 64BIT
592 bool "Enable userspace Vector by defau !! 2086 bool "64-bit kernel"
593 depends on RISCV_ISA_V !! 2087 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
594 default y <<
595 help 2088 help
596 Say Y here if you want to enable Vec !! 2089 Select this option if you want to build a 64-bit kernel.
597 Otherwise, userspace has to make exp !! 2090
598 Vector, or enable it via the sysctl !! 2091 endchoice
599 2092
600 If you don't know what to do here, s !! 2093 config KVM_GUEST
>> 2094 bool "KVM Guest Kernel"
>> 2095 depends on BROKEN_ON_SMP
>> 2096 help
>> 2097 Select this option if building a guest kernel for KVM (Trap & Emulate)
>> 2098 mode.
>> 2099
>> 2100 config KVM_GUEST_TIMER_FREQ
>> 2101 int "Count/Compare Timer Frequency (MHz)"
>> 2102 depends on KVM_GUEST
>> 2103 default 100
>> 2104 help
>> 2105 Set this to non-zero if building a guest kernel for KVM to skip RTC
>> 2106 emulation when determining guest CPU Frequency. Instead, the guest's
>> 2107 timer frequency is specified directly.
601 2108
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 2109 config MIPS_VA_BITS_48
603 int "Threshold size for vectorized use !! 2110 bool "48 bits virtual memory"
604 depends on RISCV_ISA_V !! 2111 depends on 64BIT
605 default 768 <<
606 help 2112 help
607 Prefer using vectorized copy_to_user !! 2113 Support a maximum at least 48 bits of application virtual
608 workload size exceeds this value. !! 2114 memory. Default is 40 bits or less, depending on the CPU.
>> 2115 For page sizes 16k and above, this option results in a small
>> 2116 memory overhead for page tables. For 4k page size, a fourth
>> 2117 level of page tables is added which imposes both a memory
>> 2118 overhead as well as slower TLB fault handling.
609 2119
610 config RISCV_ISA_V_PREEMPTIVE !! 2120 If unsure, say N.
611 bool "Run kernel-mode Vector with kern !! 2121
612 depends on PREEMPTION !! 2122 choice
613 depends on RISCV_ISA_V !! 2123 prompt "Kernel page size"
614 default y !! 2124 default PAGE_SIZE_4KB
>> 2125
>> 2126 config PAGE_SIZE_4KB
>> 2127 bool "4kB"
>> 2128 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
>> 2129 help
>> 2130 This option select the standard 4kB Linux page size. On some
>> 2131 R3000-family processors this is the only available page size. Using
>> 2132 4kB page size will minimize memory consumption and is therefore
>> 2133 recommended for low memory systems.
>> 2134
>> 2135 config PAGE_SIZE_8KB
>> 2136 bool "8kB"
>> 2137 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
>> 2138 depends on !MIPS_VA_BITS_48
>> 2139 help
>> 2140 Using 8kB page size will result in higher performance kernel at
>> 2141 the price of higher memory consumption. This option is available
>> 2142 only on R8000 and cnMIPS processors. Note that you will need a
>> 2143 suitable Linux distribution to support this.
>> 2144
>> 2145 config PAGE_SIZE_16KB
>> 2146 bool "16kB"
>> 2147 depends on !CPU_R3000 && !CPU_TX39XX
>> 2148 help
>> 2149 Using 16kB page size will result in higher performance kernel at
>> 2150 the price of higher memory consumption. This option is available on
>> 2151 all non-R3000 family processors. Note that you will need a suitable
>> 2152 Linux distribution to support this.
>> 2153
>> 2154 config PAGE_SIZE_32KB
>> 2155 bool "32kB"
>> 2156 depends on CPU_CAVIUM_OCTEON
>> 2157 depends on !MIPS_VA_BITS_48
>> 2158 help
>> 2159 Using 32kB page size will result in higher performance kernel at
>> 2160 the price of higher memory consumption. This option is available
>> 2161 only on cnMIPS cores. Note that you will need a suitable Linux
>> 2162 distribution to support this.
>> 2163
>> 2164 config PAGE_SIZE_64KB
>> 2165 bool "64kB"
>> 2166 depends on !CPU_R3000 && !CPU_TX39XX
>> 2167 help
>> 2168 Using 64kB page size will result in higher performance kernel at
>> 2169 the price of higher memory consumption. This option is available on
>> 2170 all non-R3000 family processor. Not that at the time of this
>> 2171 writing this option is still high experimental.
>> 2172
>> 2173 endchoice
>> 2174
>> 2175 config FORCE_MAX_ZONEORDER
>> 2176 int "Maximum zone order"
>> 2177 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2178 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2179 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2180 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2181 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2182 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2183 range 11 64
>> 2184 default "11"
>> 2185 help
>> 2186 The kernel memory allocator divides physically contiguous memory
>> 2187 blocks into "zones", where each zone is a power of two number of
>> 2188 pages. This option selects the largest power of two that the kernel
>> 2189 keeps in the memory allocator. If you need to allocate very large
>> 2190 blocks of physically contiguous memory, then you may need to
>> 2191 increase this value.
>> 2192
>> 2193 This config option is actually maximum order plus one. For example,
>> 2194 a value of 11 means that the largest free memory block is 2^10 pages.
>> 2195
>> 2196 The page size is not necessarily 4KB. Keep this in mind
>> 2197 when choosing a value for this option.
>> 2198
>> 2199 config BOARD_SCACHE
>> 2200 bool
>> 2201
>> 2202 config IP22_CPU_SCACHE
>> 2203 bool
>> 2204 select BOARD_SCACHE
>> 2205
>> 2206 #
>> 2207 # Support for a MIPS32 / MIPS64 style S-caches
>> 2208 #
>> 2209 config MIPS_CPU_SCACHE
>> 2210 bool
>> 2211 select BOARD_SCACHE
>> 2212
>> 2213 config R5000_CPU_SCACHE
>> 2214 bool
>> 2215 select BOARD_SCACHE
>> 2216
>> 2217 config RM7000_CPU_SCACHE
>> 2218 bool
>> 2219 select BOARD_SCACHE
>> 2220
>> 2221 config SIBYTE_DMA_PAGEOPS
>> 2222 bool "Use DMA to clear/copy pages"
>> 2223 depends on CPU_SB1
615 help 2224 help
616 Usually, in-kernel SIMD routines are !! 2225 Instead of using the CPU to zero and copy pages, use a Data Mover
617 Functions which envoke long running !! 2226 channel. These DMA channels are otherwise unused by the standard
618 vector unit to prevent blocking othe !! 2227 SiByte Linux port. Seems to give a small performance benefit.
>> 2228
>> 2229 config CPU_HAS_PREFETCH
>> 2230 bool
>> 2231
>> 2232 config CPU_GENERIC_DUMP_TLB
>> 2233 bool
>> 2234 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
619 2235
620 This config allows kernel to run SIM !! 2236 config CPU_R4K_FPU
621 preemption. Enabling this config wil !! 2237 bool
622 consumption due to the allocation of !! 2238 default y if !(CPU_R3000 || CPU_TX39XX)
>> 2239
>> 2240 config CPU_R4K_CACHE_TLB
>> 2241 bool
>> 2242 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
623 2243
624 config RISCV_ISA_ZAWRS !! 2244 config MIPS_MT_SMP
625 bool "Zawrs extension support for more !! 2245 bool "MIPS MT SMP support (1 TC on each available VPE)"
626 depends on RISCV_ALTERNATIVE <<
627 default y 2246 default y
>> 2247 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
>> 2248 select CPU_MIPSR2_IRQ_VI
>> 2249 select CPU_MIPSR2_IRQ_EI
>> 2250 select SYNC_R4K
>> 2251 select MIPS_MT
>> 2252 select SMP
>> 2253 select SMP_UP
>> 2254 select SYS_SUPPORTS_SMP
>> 2255 select SYS_SUPPORTS_SCHED_SMT
>> 2256 select MIPS_PERF_SHARED_TC_COUNTERS
>> 2257 help
>> 2258 This is a kernel model which is known as SMVP. This is supported
>> 2259 on cores with the MT ASE and uses the available VPEs to implement
>> 2260 virtual processors which supports SMP. This is equivalent to the
>> 2261 Intel Hyperthreading feature. For further information go to
>> 2262 <http://www.imgtec.com/mips/mips-multithreading.asp>.
>> 2263
>> 2264 config MIPS_MT
>> 2265 bool
>> 2266
>> 2267 config SCHED_SMT
>> 2268 bool "SMT (multithreading) scheduler support"
>> 2269 depends on SYS_SUPPORTS_SCHED_SMT
>> 2270 default n
628 help 2271 help
629 The Zawrs extension defines instruct !! 2272 SMT scheduler support improves the CPU scheduler's decision making
630 which allow a hart to enter a low-po !! 2273 when dealing with MIPS MT enabled cores at a cost of slightly
631 hypervisor while waiting on a store !! 2274 increased overhead in some places. If unsure say N here.
632 use of these instructions in the ker <<
633 detected at boot. <<
634 2275
635 If you don't know what to do here, s !! 2276 config SYS_SUPPORTS_SCHED_SMT
>> 2277 bool
636 2278
637 config TOOLCHAIN_HAS_ZBB !! 2279 config SYS_SUPPORTS_MULTITHREADING
638 bool 2280 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 2281
645 # This symbol indicates that the toolchain sup !! 2282 config MIPS_MT_FPAFF
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 2283 bool "Dynamic FPU affinity for FP-intensive threads"
647 # binutils added all except Zvkb, then added Z !! 2284 default y
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO !! 2285 depends on MIPS_MT_SMP
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 2286
652 config RISCV_ISA_ZBA !! 2287 config MIPSR2_TO_R6_EMULATOR
653 bool "Zba extension support for bit ma !! 2288 bool "MIPS R2-to-R6 emulator"
>> 2289 depends on CPU_MIPSR6
654 default y 2290 default y
655 help 2291 help
656 Add support for enabling optimisati !! 2292 Choose this option if you want to run non-R6 MIPS userland code.
657 extension is detected at boot. !! 2293 Even if you say 'Y' here, the emulator will still be disabled by
>> 2294 default. You can enable it using the 'mipsr2emu' kernel option.
>> 2295 The only reason this is a build-time option is to save ~14K from the
>> 2296 final kernel image.
>> 2297
>> 2298 config SYS_SUPPORTS_VPE_LOADER
>> 2299 bool
>> 2300 depends on SYS_SUPPORTS_MULTITHREADING
>> 2301 help
>> 2302 Indicates that the platform supports the VPE loader, and provides
>> 2303 physical_memsize.
658 2304
659 The Zba extension provides instruct !! 2305 config MIPS_VPE_LOADER
660 of addresses that index into arrays !! 2306 bool "VPE loader support."
>> 2307 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
>> 2308 select CPU_MIPSR2_IRQ_VI
>> 2309 select CPU_MIPSR2_IRQ_EI
>> 2310 select MIPS_MT
>> 2311 help
>> 2312 Includes a loader for loading an elf relocatable object
>> 2313 onto another VPE and running it.
661 2314
662 If you don't know what to do here, !! 2315 config MIPS_VPE_LOADER_CMP
>> 2316 bool
>> 2317 default "y"
>> 2318 depends on MIPS_VPE_LOADER && MIPS_CMP
>> 2319
>> 2320 config MIPS_VPE_LOADER_MT
>> 2321 bool
>> 2322 default "y"
>> 2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
663 2324
664 config RISCV_ISA_ZBB !! 2325 config MIPS_VPE_LOADER_TOM
665 bool "Zbb extension support for bit ma !! 2326 bool "Load VPE program into memory hidden from linux"
666 depends on TOOLCHAIN_HAS_ZBB !! 2327 depends on MIPS_VPE_LOADER
667 depends on RISCV_ALTERNATIVE <<
668 default y 2328 default y
669 help 2329 help
670 Adds support to dynamically detect !! 2330 The loader can use memory that is present but has been hidden from
671 extension (basic bit manipulation) !! 2331 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2332 you to ensure the amount you put in the option and the space your
>> 2333 program requires is less or equal to the amount physically present.
672 2334
673 The Zbb extension provides instruct !! 2335 config MIPS_VPE_APSP_API
674 of bit-specific operations (count b !! 2336 bool "Enable support for AP/SP API (RTLX)"
675 bitrotation, etc). !! 2337 depends on MIPS_VPE_LOADER
676 2338
677 If you don't know what to do here, !! 2339 config MIPS_VPE_APSP_API_CMP
>> 2340 bool
>> 2341 default "y"
>> 2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
>> 2343
>> 2344 config MIPS_VPE_APSP_API_MT
>> 2345 bool
>> 2346 default "y"
>> 2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
>> 2348
>> 2349 config MIPS_CMP
>> 2350 bool "MIPS CMP framework support (DEPRECATED)"
>> 2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
>> 2352 select SMP
>> 2353 select SYNC_R4K
>> 2354 select SYS_SUPPORTS_SMP
>> 2355 select WEAK_ORDERING
>> 2356 default n
>> 2357 help
>> 2358 Select this if you are using a bootloader which implements the "CMP
>> 2359 framework" protocol (ie. YAMON) and want your kernel to make use of
>> 2360 its ability to start secondary CPUs.
>> 2361
>> 2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
>> 2363 instead of this.
>> 2364
>> 2365 config MIPS_CPS
>> 2366 bool "MIPS Coherent Processing System support"
>> 2367 depends on SYS_SUPPORTS_MIPS_CPS
>> 2368 select MIPS_CM
>> 2369 select MIPS_CPS_PM if HOTPLUG_CPU
>> 2370 select SMP
>> 2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
>> 2372 select SYS_SUPPORTS_HOTPLUG_CPU
>> 2373 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
>> 2374 select SYS_SUPPORTS_SMP
>> 2375 select WEAK_ORDERING
>> 2376 help
>> 2377 Select this if you wish to run an SMP kernel across multiple cores
>> 2378 within a MIPS Coherent Processing System. When this option is
>> 2379 enabled the kernel will probe for other cores and boot them with
>> 2380 no external assistance. It is safe to enable this when hardware
>> 2381 support is unavailable.
>> 2382
>> 2383 config MIPS_CPS_PM
>> 2384 depends on MIPS_CPS
>> 2385 bool
>> 2386
>> 2387 config MIPS_CM
>> 2388 bool
>> 2389 select MIPS_CPC
>> 2390
>> 2391 config MIPS_CPC
>> 2392 bool
678 2393
679 config TOOLCHAIN_HAS_ZBC !! 2394 config SB1_PASS_2_WORKAROUNDS
680 bool 2395 bool
>> 2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
681 default y 2397 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 2398
687 config RISCV_ISA_ZBC !! 2399 config SB1_PASS_2_1_WORKAROUNDS
688 bool "Zbc extension support for carry- !! 2400 bool
689 depends on TOOLCHAIN_HAS_ZBC !! 2401 depends on CPU_SB1 && CPU_SB1_PASS_2
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 2402 default y
>> 2403
>> 2404
>> 2405 config ARCH_PHYS_ADDR_T_64BIT
>> 2406 bool
>> 2407
>> 2408 choice
>> 2409 prompt "SmartMIPS or microMIPS ASE support"
>> 2410
>> 2411 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
>> 2412 bool "None"
693 help 2413 help
694 Adds support to dynamically detect !! 2414 Select this if you want neither microMIPS nor SmartMIPS support
695 extension (carry-less multiplicatio <<
696 2415
697 The Zbc extension could accelerate !! 2416 config CPU_HAS_SMARTMIPS
698 calculations. !! 2417 depends on SYS_SUPPORTS_SMARTMIPS
>> 2418 bool "SmartMIPS"
>> 2419 help
>> 2420 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2421 increased security at both hardware and software level for
>> 2422 smartcards. Enabling this option will allow proper use of the
>> 2423 SmartMIPS instructions by Linux applications. However a kernel with
>> 2424 this option will not work on a MIPS core without SmartMIPS core. If
>> 2425 you don't know you probably don't have SmartMIPS and should say N
>> 2426 here.
699 2427
700 If you don't know what to do here, !! 2428 config CPU_MICROMIPS
>> 2429 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
>> 2430 bool "microMIPS"
>> 2431 help
>> 2432 When this option is enabled the kernel will be built using the
>> 2433 microMIPS ISA
>> 2434
>> 2435 endchoice
701 2436
702 config RISCV_ISA_ZICBOM !! 2437 config CPU_HAS_MSA
703 bool "Zicbom extension support for non !! 2438 bool "Support for the MIPS SIMD Architecture"
704 depends on MMU !! 2439 depends on CPU_SUPPORTS_MSA
705 depends on RISCV_ALTERNATIVE !! 2440 depends on 64BIT || MIPS_O32_FP64_SUPPORT
>> 2441 help
>> 2442 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
>> 2443 and a set of SIMD instructions to operate on them. When this option
>> 2444 is enabled the kernel will support allocating & switching MSA
>> 2445 vector register contexts. If you know that your kernel will only be
>> 2446 running on CPUs which do not support MSA or that your userland will
>> 2447 not be making use of it then you may wish to say N here to reduce
>> 2448 the size & complexity of your kernel.
>> 2449
>> 2450 If unsure, say Y.
>> 2451
>> 2452 config CPU_HAS_WB
>> 2453 bool
>> 2454
>> 2455 config XKS01
>> 2456 bool
>> 2457
>> 2458 config CPU_HAS_RIXI
>> 2459 bool
>> 2460
>> 2461 #
>> 2462 # Vectored interrupt mode is an R2 feature
>> 2463 #
>> 2464 config CPU_MIPSR2_IRQ_VI
>> 2465 bool
>> 2466
>> 2467 #
>> 2468 # Extended interrupt mode is an R2 feature
>> 2469 #
>> 2470 config CPU_MIPSR2_IRQ_EI
>> 2471 bool
>> 2472
>> 2473 config CPU_HAS_SYNC
>> 2474 bool
>> 2475 depends on !CPU_R3000
706 default y 2476 default y
707 select RISCV_DMA_NONCOHERENT !! 2477
708 select DMA_DIRECT_REMAP !! 2478 #
>> 2479 # CPU non-features
>> 2480 #
>> 2481 config CPU_DADDI_WORKAROUNDS
>> 2482 bool
>> 2483
>> 2484 config CPU_R4000_WORKAROUNDS
>> 2485 bool
>> 2486 select CPU_R4400_WORKAROUNDS
>> 2487
>> 2488 config CPU_R4400_WORKAROUNDS
>> 2489 bool
>> 2490
>> 2491 config MIPS_ASID_SHIFT
>> 2492 int
>> 2493 default 6 if CPU_R3000 || CPU_TX39XX
>> 2494 default 4 if CPU_R8000
>> 2495 default 0
>> 2496
>> 2497 config MIPS_ASID_BITS
>> 2498 int
>> 2499 default 0 if MIPS_ASID_BITS_VARIABLE
>> 2500 default 6 if CPU_R3000 || CPU_TX39XX
>> 2501 default 8
>> 2502
>> 2503 config MIPS_ASID_BITS_VARIABLE
>> 2504 bool
>> 2505
>> 2506 config MIPS_CRC_SUPPORT
>> 2507 bool
>> 2508
>> 2509 #
>> 2510 # - Highmem only makes sense for the 32-bit kernel.
>> 2511 # - The current highmem code will only work properly on physically indexed
>> 2512 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2513 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2514 # moment we protect the user and offer the highmem option only on machines
>> 2515 # where it's known to be safe. This will not offer highmem on a few systems
>> 2516 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2517 # indexed CPUs but we're playing safe.
>> 2518 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2519 # know they might have memory configurations that could make use of highmem
>> 2520 # support.
>> 2521 #
>> 2522 config HIGHMEM
>> 2523 bool "High Memory Support"
>> 2524 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
>> 2525
>> 2526 config CPU_SUPPORTS_HIGHMEM
>> 2527 bool
>> 2528
>> 2529 config SYS_SUPPORTS_HIGHMEM
>> 2530 bool
>> 2531
>> 2532 config SYS_SUPPORTS_SMARTMIPS
>> 2533 bool
>> 2534
>> 2535 config SYS_SUPPORTS_MICROMIPS
>> 2536 bool
>> 2537
>> 2538 config SYS_SUPPORTS_MIPS16
>> 2539 bool
709 help 2540 help
710 Adds support to dynamically detect !! 2541 This option must be set if a kernel might be executed on a MIPS16-
711 extension (Cache Block Management O !! 2542 enabled CPU even if MIPS16 is not actually being used. In other
712 usage. !! 2543 words, it makes the kernel MIPS16-tolerant.
713 2544
714 The Zicbom extension can be used to !! 2545 config CPU_SUPPORTS_MSA
715 non-coherent DMA support on devices !! 2546 bool
716 2547
717 If you don't know what to do here, !! 2548 config ARCH_FLATMEM_ENABLE
>> 2549 def_bool y
>> 2550 depends on !NUMA && !CPU_LOONGSON2
718 2551
719 config RISCV_ISA_ZICBOZ !! 2552 config ARCH_DISCONTIGMEM_ENABLE
720 bool "Zicboz extension support for fas !! 2553 bool
721 depends on RISCV_ALTERNATIVE !! 2554 default y if SGI_IP27
722 default y <<
723 help 2555 help
724 Enable the use of the Zicboz extens !! 2556 Say Y to support efficient handling of discontiguous physical memory,
725 when available. !! 2557 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 2558 or have huge holes in the physical address space for other reasons.
>> 2559 See <file:Documentation/vm/numa> for more.
726 2560
727 The Zicboz extension is used for fa !! 2561 config ARCH_SPARSEMEM_ENABLE
>> 2562 bool
>> 2563 select SPARSEMEM_STATIC
728 2564
729 If you don't know what to do here, !! 2565 config NUMA
>> 2566 bool "NUMA Support"
>> 2567 depends on SYS_SUPPORTS_NUMA
>> 2568 help
>> 2569 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 2570 Access). This option improves performance on systems with more
>> 2571 than two nodes; on two node systems it is generally better to
>> 2572 leave it disabled; on single node systems disable this option
>> 2573 disabled.
730 2574
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 2575 config SYS_SUPPORTS_NUMA
732 def_bool y !! 2576 bool
733 # https://sourceware.org/git/?p=binuti <<
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 2577
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 2578 config RELOCATABLE
748 def_bool y !! 2579 bool "Relocatable kernel"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 2580 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
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 2581 help
754 Certain versions of clang and GCC do !! 2582 This builds a kernel image that retains relocation information
755 -march. This option causes an older !! 2583 so it can be loaded someplace besides the default 1MB.
756 versions of clang and GCC to be pass !! 2584 The relocations make the kernel binary about 15% larger,
757 as passing zicsr and zifencei to -ma !! 2585 but are discarded at runtime
>> 2586
>> 2587 config RELOCATION_TABLE_SIZE
>> 2588 hex "Relocation table size"
>> 2589 depends on RELOCATABLE
>> 2590 range 0x0 0x01000000
>> 2591 default "0x00100000"
>> 2592 ---help---
>> 2593 A table of relocation data will be appended to the kernel binary
>> 2594 and parsed at boot to fix up the relocated kernel.
>> 2595
>> 2596 This option allows the amount of space reserved for the table to be
>> 2597 adjusted, although the default of 1Mb should be ok in most cases.
>> 2598
>> 2599 The build will fail and a valid size suggested if this is too small.
>> 2600
>> 2601 If unsure, leave at the default value.
758 2602
759 config FPU !! 2603 config RANDOMIZE_BASE
760 bool "FPU support" !! 2604 bool "Randomize the address of the kernel image"
>> 2605 depends on RELOCATABLE
>> 2606 ---help---
>> 2607 Randomizes the physical and virtual address at which the
>> 2608 kernel image is loaded, as a security feature that
>> 2609 deters exploit attempts relying on knowledge of the location
>> 2610 of kernel internals.
>> 2611
>> 2612 Entropy is generated using any coprocessor 0 registers available.
>> 2613
>> 2614 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
>> 2615
>> 2616 If unsure, say N.
>> 2617
>> 2618 config RANDOMIZE_BASE_MAX_OFFSET
>> 2619 hex "Maximum kASLR offset" if EXPERT
>> 2620 depends on RANDOMIZE_BASE
>> 2621 range 0x0 0x40000000 if EVA || 64BIT
>> 2622 range 0x0 0x08000000
>> 2623 default "0x01000000"
>> 2624 ---help---
>> 2625 When kASLR is active, this provides the maximum offset that will
>> 2626 be applied to the kernel image. It should be set according to the
>> 2627 amount of physical RAM available in the target system minus
>> 2628 PHYSICAL_START and must be a power of 2.
>> 2629
>> 2630 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
>> 2631 EVA or 64-bit. The default is 16Mb.
>> 2632
>> 2633 config NODES_SHIFT
>> 2634 int
>> 2635 default "6"
>> 2636 depends on NEED_MULTIPLE_NODES
>> 2637
>> 2638 config HW_PERF_EVENTS
>> 2639 bool "Enable hardware performance counter support for perf events"
>> 2640 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
761 default y 2641 default y
762 help 2642 help
763 Say N here if you want to disable al !! 2643 Enable hardware performance counter support for perf events. If
764 in the kernel. !! 2644 disabled, perf events will use software events only.
765 2645
766 If you don't know what to do here, s !! 2646 source "mm/Kconfig"
767 2647
768 config IRQ_STACKS !! 2648 config SMP
769 bool "Independent irq & softirq stacks !! 2649 bool "Multi-Processing support"
770 default y !! 2650 depends on SYS_SUPPORTS_SMP
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 2651 help
774 Add independent irq & softirq stacks !! 2652 This enables support for systems with more than one CPU. If you have
775 overflows. We may save some memory f !! 2653 a system with only one CPU, say N. If you have a system with more
>> 2654 than one CPU, say Y.
>> 2655
>> 2656 If you say N here, the kernel will run on uni- and multiprocessor
>> 2657 machines, but will use only one CPU of a multiprocessor machine. If
>> 2658 you say Y here, the kernel will run on many, but not all,
>> 2659 uniprocessor machines. On a uniprocessor machine, the kernel
>> 2660 will run faster if you say N here.
776 2661
777 config THREAD_SIZE_ORDER !! 2662 People using multiprocessor machines who say Y here should also say
778 int "Kernel stack size (in power-of-tw !! 2663 Y to "Enhanced Real Time Clock Support", below.
779 range 0 4 !! 2664
780 default 1 if 32BIT !! 2665 See also the SMP-HOWTO available at
781 default 2 !! 2666 <http://www.tldp.org/docs.html#howto>.
>> 2667
>> 2668 If you don't know what to do here, say N.
>> 2669
>> 2670 config HOTPLUG_CPU
>> 2671 bool "Support for hot-pluggable CPUs"
>> 2672 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
782 help 2673 help
783 Specify the Pages of thread stack si !! 2674 Say Y here to allow turning CPUs off and on. CPUs can be
784 affects irq stack size, which is equ !! 2675 controlled through /sys/devices/system/cpu.
>> 2676 (Note: power management support will enable this option
>> 2677 automatically on SMP systems. )
>> 2678 Say N if you want to disable CPU hotplug.
785 2679
786 config RISCV_MISALIGNED !! 2680 config SMP_UP
787 bool 2681 bool
788 select SYSCTL_ARCH_UNALIGN_ALLOW <<
789 help <<
790 Embed support for emulating misalign <<
791 2682
792 choice !! 2683 config SYS_SUPPORTS_MIPS_CMP
793 prompt "Unaligned Accesses Support" !! 2684 bool
794 default RISCV_PROBE_UNALIGNED_ACCESS <<
795 help <<
796 This determines the level of support <<
797 information is used by the kernel to <<
798 exposed to user space via the hwprob <<
799 probed at boot by default. <<
800 <<
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 2685
841 endchoice !! 2686 config SYS_SUPPORTS_MIPS_CPS
>> 2687 bool
842 2688
843 source "arch/riscv/Kconfig.vendor" !! 2689 config SYS_SUPPORTS_SMP
>> 2690 bool
844 2691
845 endmenu # "Platform type" !! 2692 config NR_CPUS_DEFAULT_4
>> 2693 bool
846 2694
847 menu "Kernel features" !! 2695 config NR_CPUS_DEFAULT_8
>> 2696 bool
848 2697
849 source "kernel/Kconfig.hz" !! 2698 config NR_CPUS_DEFAULT_16
>> 2699 bool
850 2700
851 config RISCV_SBI_V01 !! 2701 config NR_CPUS_DEFAULT_32
852 bool "SBI v0.1 support" !! 2702 bool
853 depends on RISCV_SBI !! 2703
854 help !! 2704 config NR_CPUS_DEFAULT_64
855 This config allows kernel to use SBI !! 2705 bool
856 deprecated in future once legacy M-m <<
857 2706
858 config RISCV_BOOT_SPINWAIT !! 2707 config NR_CPUS
859 bool "Spinwait booting method" !! 2708 int "Maximum number of CPUs (2-256)"
>> 2709 range 2 256
860 depends on SMP 2710 depends on SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 2711 default "4" if NR_CPUS_DEFAULT_4
>> 2712 default "8" if NR_CPUS_DEFAULT_8
>> 2713 default "16" if NR_CPUS_DEFAULT_16
>> 2714 default "32" if NR_CPUS_DEFAULT_32
>> 2715 default "64" if NR_CPUS_DEFAULT_64
>> 2716 help
>> 2717 This allows you to specify the maximum number of CPUs which this
>> 2718 kernel will support. The maximum supported value is 32 for 32-bit
>> 2719 kernel and 64 for 64-bit kernels; the minimum value which makes
>> 2720 sense is 1 for Qemu (useful only for kernel debugging purposes)
>> 2721 and 2 for all others.
>> 2722
>> 2723 This is purely to save memory - each supported CPU adds
>> 2724 approximately eight kilobytes to the kernel image. For best
>> 2725 performance should round up your number of processors to the next
>> 2726 power of two.
>> 2727
>> 2728 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2729 bool
>> 2730
>> 2731 config MIPS_NR_CPU_NR_MAP_1024
>> 2732 bool
>> 2733
>> 2734 config MIPS_NR_CPU_NR_MAP
>> 2735 int
>> 2736 depends on SMP
>> 2737 default 1024 if MIPS_NR_CPU_NR_MAP_1024
>> 2738 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
>> 2739
>> 2740 #
>> 2741 # Timer Interrupt Frequency Configuration
>> 2742 #
>> 2743
>> 2744 choice
>> 2745 prompt "Timer frequency"
>> 2746 default HZ_250
862 help 2747 help
863 This enables support for booting Lin !! 2748 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 2749
876 If unsure what to do here, say N. !! 2750 config HZ_24
>> 2751 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
877 2752
878 config ARCH_SUPPORTS_KEXEC !! 2753 config HZ_48
879 def_bool y !! 2754 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
880 2755
881 config ARCH_SELECTS_KEXEC !! 2756 config HZ_100
882 def_bool y !! 2757 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 2758
886 config ARCH_SUPPORTS_KEXEC_FILE !! 2759 config HZ_128
887 def_bool 64BIT !! 2760 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
888 2761
889 config ARCH_SELECTS_KEXEC_FILE !! 2762 config HZ_250
890 def_bool y !! 2763 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 2764
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 2765 config HZ_256
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 2766 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
897 2767
898 config ARCH_SUPPORTS_CRASH_DUMP !! 2768 config HZ_1000
899 def_bool y !! 2769 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
900 2770
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 2771 config HZ_1024
902 def_bool CRASH_RESERVE !! 2772 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
903 2773
904 config COMPAT !! 2774 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 2775
933 If in doubt, say N here. !! 2776 config SYS_SUPPORTS_24HZ
>> 2777 bool
934 2778
935 config RELOCATABLE !! 2779 config SYS_SUPPORTS_48HZ
936 bool "Build a relocatable kernel" !! 2780 bool
937 depends on MMU && 64BIT && !XIP_KERNEL <<
938 select MODULE_SECTIONS if MODULES <<
939 help <<
940 This builds a kernel as a Position I <<
941 which retains all relocation metadat <<
942 kernel binary at runtime to a differ <<
943 address it was linked at. <<
944 Since RISCV uses the RELA relocation <<
945 relocation pass at runtime even if t <<
946 same address it was linked at. <<
947 2781
948 If unsure, say N. !! 2782 config SYS_SUPPORTS_100HZ
>> 2783 bool
949 2784
950 config RANDOMIZE_BASE !! 2785 config SYS_SUPPORTS_128HZ
951 bool "Randomize the address of the ker !! 2786 bool
952 select RELOCATABLE !! 2787
953 depends on MMU && 64BIT && !XIP_KERNEL !! 2788 config SYS_SUPPORTS_250HZ
954 help !! 2789 bool
955 Randomizes the virtual address at wh !! 2790
956 loaded, as a security feature that d !! 2791 config SYS_SUPPORTS_256HZ
957 relying on knowledge of the location !! 2792 bool
958 !! 2793
959 It is the bootloader's job to provid !! 2794 config SYS_SUPPORTS_1000HZ
960 random u64 value in /chosen/kaslr-se !! 2795 bool
961 !! 2796
962 When booting via the UEFI stub, it w !! 2797 config SYS_SUPPORTS_1024HZ
963 EFI_RNG_PROTOCOL implementation (if !! 2798 bool
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 2799
981 When that occurs, it is possible to !! 2800 config SYS_SUPPORTS_ARBIT_HZ
982 line here and choose how the kernel !! 2801 bool
>> 2802 default y if !SYS_SUPPORTS_24HZ && \
>> 2803 !SYS_SUPPORTS_48HZ && \
>> 2804 !SYS_SUPPORTS_100HZ && \
>> 2805 !SYS_SUPPORTS_128HZ && \
>> 2806 !SYS_SUPPORTS_250HZ && \
>> 2807 !SYS_SUPPORTS_256HZ && \
>> 2808 !SYS_SUPPORTS_1000HZ && \
>> 2809 !SYS_SUPPORTS_1024HZ
>> 2810
>> 2811 config HZ
>> 2812 int
>> 2813 default 24 if HZ_24
>> 2814 default 48 if HZ_48
>> 2815 default 100 if HZ_100
>> 2816 default 128 if HZ_128
>> 2817 default 250 if HZ_250
>> 2818 default 256 if HZ_256
>> 2819 default 1000 if HZ_1000
>> 2820 default 1024 if HZ_1024
>> 2821
>> 2822 config SCHED_HRTICK
>> 2823 def_bool HIGH_RES_TIMERS
>> 2824
>> 2825 source "kernel/Kconfig.preempt"
>> 2826
>> 2827 config KEXEC
>> 2828 bool "Kexec system call"
>> 2829 select KEXEC_CORE
>> 2830 help
>> 2831 kexec is a system call that implements the ability to shutdown your
>> 2832 current kernel, and to start another kernel. It is like a reboot
>> 2833 but it is independent of the system firmware. And like a reboot
>> 2834 you can start any kernel with it, not just Linux.
>> 2835
>> 2836 The name comes from the similarity to the exec system call.
>> 2837
>> 2838 It is an ongoing process to be certain the hardware in a machine
>> 2839 is properly shutdown, so do not be surprised if this code does not
>> 2840 initially work for you. As of this writing the exact hardware
>> 2841 interface is strongly in flux, so no good recommendation can be
>> 2842 made.
>> 2843
>> 2844 config CRASH_DUMP
>> 2845 bool "Kernel crash dumps"
>> 2846 help
>> 2847 Generate crash dump after being started by kexec.
>> 2848 This should be normally only set in special crash dump kernels
>> 2849 which are loaded in the main kernel with kexec-tools into
>> 2850 a specially reserved region and then later executed after
>> 2851 a crash by kdump/kexec. The crash dump kernel must be compiled
>> 2852 to a memory address not used by the main kernel or firmware using
>> 2853 PHYSICAL_START.
>> 2854
>> 2855 config PHYSICAL_START
>> 2856 hex "Physical address where the kernel is loaded"
>> 2857 default "0xffffffff84000000"
>> 2858 depends on CRASH_DUMP
>> 2859 help
>> 2860 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
>> 2861 If you plan to use kernel for capturing the crash dump change
>> 2862 this value to start of the reserved region (the "X" value as
>> 2863 specified in the "crashkernel=YM@XM" command line boot parameter
>> 2864 passed to the panic-ed kernel).
>> 2865
>> 2866 config SECCOMP
>> 2867 bool "Enable seccomp to safely compute untrusted bytecode"
>> 2868 depends on PROC_FS
>> 2869 default y
>> 2870 help
>> 2871 This kernel feature is useful for number crunching applications
>> 2872 that may need to compute untrusted bytecode during their
>> 2873 execution. By using pipes or other transports made available to
>> 2874 the process as file descriptors supporting the read/write
>> 2875 syscalls, it's possible to isolate those applications in
>> 2876 their own address space using seccomp. Once seccomp is
>> 2877 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 2878 and the task is only allowed to execute a few safe syscalls
>> 2879 defined by each seccomp mode.
>> 2880
>> 2881 If unsure, say Y. Only embedded should say N here.
>> 2882
>> 2883 config MIPS_O32_FP64_SUPPORT
>> 2884 bool "Support for O32 binaries using 64-bit FP"
>> 2885 depends on 32BIT || MIPS32_O32
>> 2886 help
>> 2887 When this is enabled, the kernel will support use of 64-bit floating
>> 2888 point registers with binaries using the O32 ABI along with the
>> 2889 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
>> 2890 32-bit MIPS systems this support is at the cost of increasing the
>> 2891 size and complexity of the compiled FPU emulator. Thus if you are
>> 2892 running a MIPS32 system and know that none of your userland binaries
>> 2893 will require 64-bit floating point, you may wish to reduce the size
>> 2894 of your kernel & potentially improve FP emulation performance by
>> 2895 saying N here.
>> 2896
>> 2897 Although binutils currently supports use of this flag the details
>> 2898 concerning its effect upon the O32 ABI in userland are still being
>> 2899 worked on. In order to avoid userland becoming dependant upon current
>> 2900 behaviour before the details have been finalised, this option should
>> 2901 be considered experimental and only enabled by those working upon
>> 2902 said details.
>> 2903
>> 2904 If unsure, say N.
>> 2905
>> 2906 config USE_OF
>> 2907 bool
>> 2908 select OF
>> 2909 select OF_EARLY_FLATTREE
>> 2910 select IRQ_DOMAIN
>> 2911
>> 2912 config BUILTIN_DTB
>> 2913 bool
983 2914
984 choice 2915 choice
985 prompt "Built-in command line usage" !! 2916 prompt "Kernel appended dtb support" if USE_OF
986 depends on CMDLINE != "" !! 2917 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 2918
>> 2919 config MIPS_NO_APPENDED_DTB
>> 2920 bool "None"
>> 2921 help
>> 2922 Do not enable appended dtb support.
>> 2923
>> 2924 config MIPS_ELF_APPENDED_DTB
>> 2925 bool "vmlinux"
>> 2926 help
>> 2927 With this option, the boot code will look for a device tree binary
>> 2928 DTB) included in the vmlinux ELF section .appended_dtb. By default
>> 2929 it is empty and the DTB can be appended using binutils command
>> 2930 objcopy:
>> 2931
>> 2932 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
>> 2933
>> 2934 This is meant as a backward compatiblity convenience for those
>> 2935 systems with a bootloader that can't be upgraded to accommodate
>> 2936 the documented boot protocol using a device tree.
>> 2937
>> 2938 config MIPS_RAW_APPENDED_DTB
>> 2939 bool "vmlinux.bin or vmlinuz.bin"
>> 2940 help
>> 2941 With this option, the boot code will look for a device tree binary
>> 2942 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
>> 2943 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
>> 2944
>> 2945 This is meant as a backward compatibility convenience for those
>> 2946 systems with a bootloader that can't be upgraded to accommodate
>> 2947 the documented boot protocol using a device tree.
>> 2948
>> 2949 Beware that there is very little in terms of protection against
>> 2950 this option being confused by leftover garbage in memory that might
>> 2951 look like a DTB header after a reboot if no actual DTB is appended
>> 2952 to vmlinux.bin. Do not leave this option active in a production kernel
>> 2953 if you don't intend to always append a DTB.
>> 2954 endchoice
>> 2955
>> 2956 choice
>> 2957 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
>> 2958 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
>> 2959 !MIPS_MALTA && \
>> 2960 !CAVIUM_OCTEON_SOC
>> 2961 default MIPS_CMDLINE_FROM_BOOTLOADER
>> 2962
>> 2963 config MIPS_CMDLINE_FROM_DTB
>> 2964 depends on USE_OF
>> 2965 bool "Dtb kernel arguments if available"
>> 2966
>> 2967 config MIPS_CMDLINE_DTB_EXTEND
>> 2968 depends on USE_OF
>> 2969 bool "Extend dtb kernel arguments with bootloader arguments"
>> 2970
>> 2971 config MIPS_CMDLINE_FROM_BOOTLOADER
>> 2972 bool "Bootloader kernel arguments if available"
>> 2973
>> 2974 config MIPS_CMDLINE_BUILTIN_EXTEND
>> 2975 depends on CMDLINE_BOOL
>> 2976 bool "Extend builtin kernel arguments with bootloader arguments"
1014 endchoice 2977 endchoice
1015 2978
1016 config EFI_STUB !! 2979 endmenu
>> 2980
>> 2981 config LOCKDEP_SUPPORT
1017 bool 2982 bool
>> 2983 default y
1018 2984
1019 config EFI !! 2985 config STACKTRACE_SUPPORT
1020 bool "UEFI runtime support" !! 2986 bool
1021 depends on OF && !XIP_KERNEL !! 2987 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 2988
1039 config DMI !! 2989 config HAVE_LATENCYTOP_SUPPORT
1040 bool "Enable support for SMBIOS (DMI) !! 2990 bool
1041 depends on EFI <<
1042 default y 2991 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
1045 2992
1046 This option is only useful on syste !! 2993 config PGTABLE_LEVELS
1047 However, even with this option, the !! 2994 int
1048 continue to boot on existing non-UE !! 2995 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
>> 2996 default 3 if 64BIT && !PAGE_SIZE_64KB
>> 2997 default 2
1049 2998
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 2999 source "init/Kconfig"
1051 def_bool $(cc-option,-mstack-protecto <<
1052 3000
1053 config STACKPROTECTOR_PER_TASK !! 3001 source "kernel/Kconfig.freezer"
1054 def_bool y <<
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 3002
1058 config PHYS_RAM_BASE_FIXED !! 3003 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1059 bool "Explicitly specified physical R !! 3004
1060 depends on NONPORTABLE !! 3005 config HW_HAS_EISA
1061 default n !! 3006 bool
>> 3007 config HW_HAS_PCI
>> 3008 bool
1062 3009
1063 config PHYS_RAM_BASE !! 3010 config PCI
1064 hex "Platform Physical RAM address" !! 3011 bool "Support for PCI controller"
1065 depends on PHYS_RAM_BASE_FIXED !! 3012 depends on HW_HAS_PCI
1066 default "0x80000000" !! 3013 select PCI_DOMAINS
1067 help !! 3014 help
1068 This is the physical address of RAM !! 3015 Find out whether you have a PCI motherboard. PCI is the name of a
1069 explicitly specified to run early r !! 3016 bus system, i.e. the way the CPU talks to the other stuff inside
1070 from flash to RAM. !! 3017 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1071 !! 3018 say Y, otherwise N.
1072 config XIP_KERNEL !! 3019
1073 bool "Kernel Execute-In-Place from RO !! 3020 config HT_PCI
1074 depends on MMU && SPARSEMEM && NONPOR !! 3021 bool "Support for HT-linked PCI"
1075 # This prevents XIP from being enable !! 3022 default y
1076 # fail to build since XIP doesn't sup !! 3023 depends on CPU_LOONGSON3
1077 depends on !COMPILE_TEST !! 3024 select PCI
1078 select PHYS_RAM_BASE_FIXED !! 3025 select PCI_DOMAINS
1079 help !! 3026 help
1080 Execute-In-Place allows the kernel !! 3027 Loongson family machines use Hyper-Transport bus for inter-core
1081 directly addressable by the CPU, su !! 3028 connection and device connection. The PCI bus is a subordinate
1082 space since the text section of the !! 3029 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 3030
1099 If unsure, say N. !! 3031 config PCI_DOMAINS
>> 3032 bool
1100 3033
1101 config XIP_PHYS_ADDR !! 3034 config PCI_DOMAINS_GENERIC
1102 hex "XIP Kernel Physical Location" !! 3035 bool
1103 depends on XIP_KERNEL <<
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 3036
1128 config BUILTIN_DTB !! 3037 config PCI_DRIVERS_GENERIC
1129 bool "Built-in device tree" !! 3038 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
1130 depends on OF && NONPORTABLE !! 3039 bool
1131 help <<
1132 Build a device tree into the Linux <<
1133 This option should be selected if n <<
1134 If unsure, say N. <<
1135 3040
>> 3041 config PCI_DRIVERS_LEGACY
>> 3042 def_bool !PCI_DRIVERS_GENERIC
>> 3043 select NO_GENERIC_PCI_IOPORT_MAP
1136 3044
1137 config BUILTIN_DTB_SOURCE !! 3045 source "drivers/pci/Kconfig"
1138 string "Built-in device tree source" !! 3046
1139 depends on BUILTIN_DTB !! 3047 #
>> 3048 # ISA support is now enabled via select. Too many systems still have the one
>> 3049 # or other ISA chip on the board that users don't know about so don't expect
>> 3050 # users to choose the right thing ...
>> 3051 #
>> 3052 config ISA
>> 3053 bool
>> 3054
>> 3055 config EISA
>> 3056 bool "EISA support"
>> 3057 depends on HW_HAS_EISA
>> 3058 select ISA
>> 3059 select GENERIC_ISA_DMA
>> 3060 ---help---
>> 3061 The Extended Industry Standard Architecture (EISA) bus was
>> 3062 developed as an open alternative to the IBM MicroChannel bus.
>> 3063
>> 3064 The EISA bus provided some of the features of the IBM MicroChannel
>> 3065 bus while maintaining backward compatibility with cards made for
>> 3066 the older ISA bus. The EISA bus saw limited use between 1988 and
>> 3067 1995 when it was made obsolete by the PCI bus.
>> 3068
>> 3069 Say Y here if you are building a kernel for an EISA-based machine.
>> 3070
>> 3071 Otherwise, say N.
>> 3072
>> 3073 source "drivers/eisa/Kconfig"
>> 3074
>> 3075 config TC
>> 3076 bool "TURBOchannel support"
>> 3077 depends on MACH_DECSTATION
>> 3078 help
>> 3079 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
>> 3080 processors. TURBOchannel programming specifications are available
>> 3081 at:
>> 3082 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 3083 and:
>> 3084 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 3085 Linux driver support status is documented at:
>> 3086 <http://www.linux-mips.org/wiki/DECstation>
>> 3087
>> 3088 config MMU
>> 3089 bool
>> 3090 default y
>> 3091
>> 3092 config ARCH_MMAP_RND_BITS_MIN
>> 3093 default 12 if 64BIT
>> 3094 default 8
>> 3095
>> 3096 config ARCH_MMAP_RND_BITS_MAX
>> 3097 default 18 if 64BIT
>> 3098 default 15
>> 3099
>> 3100 config ARCH_MMAP_RND_COMPAT_BITS_MIN
>> 3101 default 8
>> 3102
>> 3103 config ARCH_MMAP_RND_COMPAT_BITS_MAX
>> 3104 default 15
>> 3105
>> 3106 config I8253
>> 3107 bool
>> 3108 select CLKSRC_I8253
>> 3109 select CLKEVT_I8253
>> 3110 select MIPS_EXTERNAL_TIMER
>> 3111
>> 3112 config ZONE_DMA
>> 3113 bool
>> 3114
>> 3115 config ZONE_DMA32
>> 3116 bool
>> 3117
>> 3118 source "drivers/pcmcia/Kconfig"
>> 3119
>> 3120 config RAPIDIO
>> 3121 tristate "RapidIO support"
>> 3122 depends on PCI
>> 3123 default n
1140 help 3124 help
1141 DTS file path (without suffix, rela !! 3125 If you say Y here, the kernel will include drivers and
1142 for the DTS file that will be used !! 3126 infrastructure code to support RapidIO interconnect devices.
1143 kernel. !! 3127
>> 3128 source "drivers/rapidio/Kconfig"
1144 3129
1145 endmenu # "Boot options" !! 3130 endmenu
1146 3131
1147 config PORTABLE !! 3132 menu "Executable file formats"
>> 3133
>> 3134 source "fs/Kconfig.binfmt"
>> 3135
>> 3136 config TRAD_SIGNALS
1148 bool 3137 bool
1149 default !NONPORTABLE <<
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 3138
1154 config ARCH_PROC_KCORE_TEXT !! 3139 config MIPS32_COMPAT
1155 def_bool y !! 3140 bool
1156 3141
1157 menu "Power management options" !! 3142 config COMPAT
>> 3143 bool
1158 3144
1159 source "kernel/power/Kconfig" !! 3145 config SYSVIPC_COMPAT
>> 3146 bool
>> 3147
>> 3148 config MIPS32_O32
>> 3149 bool "Kernel support for o32 binaries"
>> 3150 depends on 64BIT
>> 3151 select ARCH_WANT_OLD_COMPAT_IPC
>> 3152 select COMPAT
>> 3153 select MIPS32_COMPAT
>> 3154 select SYSVIPC_COMPAT if SYSVIPC
>> 3155 help
>> 3156 Select this option if you want to run o32 binaries. These are pure
>> 3157 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 3158 existing binaries are in this format.
>> 3159
>> 3160 If unsure, say Y.
>> 3161
>> 3162 config MIPS32_N32
>> 3163 bool "Kernel support for n32 binaries"
>> 3164 depends on 64BIT
>> 3165 select COMPAT
>> 3166 select MIPS32_COMPAT
>> 3167 select SYSVIPC_COMPAT if SYSVIPC
>> 3168 help
>> 3169 Select this option if you want to run n32 binaries. These are
>> 3170 64-bit binaries using 32-bit quantities for addressing and certain
>> 3171 data that would normally be 64-bit. They are used in special
>> 3172 cases.
>> 3173
>> 3174 If unsure, say N.
>> 3175
>> 3176 config BINFMT_ELF32
>> 3177 bool
>> 3178 default y if MIPS32_O32 || MIPS32_N32
>> 3179 select ELFCORE
>> 3180
>> 3181 endmenu
>> 3182
>> 3183 menu "Power management options"
1160 3184
1161 config ARCH_HIBERNATION_POSSIBLE 3185 config ARCH_HIBERNATION_POSSIBLE
1162 def_bool y 3186 def_bool y
1163 !! 3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 3188
1167 config ARCH_SUSPEND_POSSIBLE 3189 config ARCH_SUSPEND_POSSIBLE
1168 def_bool y 3190 def_bool y
>> 3191 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1169 3192
1170 endmenu # "Power management options" !! 3193 source "kernel/power/Kconfig"
>> 3194
>> 3195 endmenu
>> 3196
>> 3197 config MIPS_EXTERNAL_TIMER
>> 3198 bool
1171 3199
1172 menu "CPU Power Management" 3200 menu "CPU Power Management"
1173 3201
>> 3202 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
>> 3203 source "drivers/cpufreq/Kconfig"
>> 3204 endif
>> 3205
1174 source "drivers/cpuidle/Kconfig" 3206 source "drivers/cpuidle/Kconfig"
1175 3207
1176 source "drivers/cpufreq/Kconfig" !! 3208 endmenu
>> 3209
>> 3210 source "net/Kconfig"
>> 3211
>> 3212 source "drivers/Kconfig"
>> 3213
>> 3214 source "drivers/firmware/Kconfig"
>> 3215
>> 3216 source "fs/Kconfig"
>> 3217
>> 3218 source "arch/mips/Kconfig.debug"
>> 3219
>> 3220 source "security/Kconfig"
1177 3221
1178 endmenu # "CPU Power Management" !! 3222 source "crypto/Kconfig"
1179 3223
1180 source "arch/riscv/kvm/Kconfig" !! 3224 source "lib/Kconfig"
1181 3225
1182 source "drivers/acpi/Kconfig" !! 3226 source "arch/mips/kvm/Kconfig"
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