1 # SPDX-License-Identifier: GPL-2.0-only !! 1 config MIPS
2 # <<
3 # For a description of the syntax of this conf <<
4 # see Documentation/kbuild/kconfig-language.rs <<
5 # <<
6 <<
7 config 64BIT <<
8 bool 2 bool
9 !! 3 default y
10 config 32BIT !! 4 select ARCH_SUPPORTS_UPROBES
11 bool !! 5 select ARCH_MIGHT_HAVE_PC_PARPORT
12 !! 6 select ARCH_MIGHT_HAVE_PC_SERIO
13 config RISCV <<
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 <<
52 select ARCH_HAS_UBSAN <<
53 select ARCH_HAS_VDSO_DATA <<
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 7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
71 select ARCH_USE_MEMTEST !! 8 select ARCH_USE_BUILTIN_BSWAP
72 select ARCH_USE_QUEUED_RWLOCKS !! 9 select HAVE_CONTEXT_TRACKING
73 select ARCH_USE_SYM_ANNOTATIONS !! 10 select HAVE_GENERIC_DMA_COHERENT
74 select ARCH_USES_CFI_TRAPS if CFI_CLAN !! 11 select HAVE_IDE
75 select ARCH_WANT_BATCHED_UNMAP_TLB_FLU !! 12 select HAVE_IRQ_EXIT_ON_IRQ_STACK
76 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_ !! 13 select HAVE_OPROFILE
77 select ARCH_WANT_FRAME_POINTERS !! 14 select HAVE_PERF_EVENTS
78 select ARCH_WANT_GENERAL_HUGETLB if !R !! 15 select PERF_USE_VMALLOC
79 select ARCH_WANT_HUGE_PMD_SHARE if 64B !! 16 select HAVE_ARCH_KGDB
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 <<
89 select COMMON_CLK <<
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 <<
96 select GENERIC_CLOCKEVENTS_BROADCAST i <<
97 select GENERIC_CPU_DEVICES <<
98 select GENERIC_CPU_VULNERABILITIES <<
99 select GENERIC_EARLY_IOREMAP <<
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 <<
108 select GENERIC_IRQ_SHOW_LEVEL <<
109 select GENERIC_LIB_DEVMEM_IS_ALLOWED <<
110 select GENERIC_PCI_IOMAP <<
111 select GENERIC_PTDUMP if MMU <<
112 select GENERIC_SCHED_CLOCK <<
113 select GENERIC_SMP_IDLE_THREAD <<
114 select GENERIC_TIME_VSYSCALL if MMU && <<
115 select GENERIC_VDSO_TIME_NS if HAVE_GE <<
116 select HARDIRQS_SW_RESEND <<
117 select HAS_IOPORT if MMU <<
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 17 select HAVE_ARCH_MMAP_RND_BITS if MMU
129 select HAVE_ARCH_MMAP_RND_COMPAT_BITS !! 18 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
130 select HAVE_ARCH_RANDOMIZE_KSTACK_OFFS <<
131 select HAVE_ARCH_SECCOMP_FILTER 19 select HAVE_ARCH_SECCOMP_FILTER
132 select HAVE_ARCH_STACKLEAK <<
133 select HAVE_ARCH_THREAD_STRUCT_WHITELI <<
134 select HAVE_ARCH_TRACEHOOK 20 select HAVE_ARCH_TRACEHOOK
135 select HAVE_ARCH_TRANSPARENT_HUGEPAGE !! 21 select HAVE_CBPF_JIT if !CPU_MICROMIPS
136 select HAVE_ARCH_USERFAULTFD_MINOR if !! 22 select HAVE_FUNCTION_TRACER
137 select HAVE_ARCH_VMAP_STACK if MMU && !! 23 select HAVE_DYNAMIC_FTRACE
138 select HAVE_ASM_MODVERSIONS !! 24 select HAVE_FTRACE_MCOUNT_RECORD
139 select HAVE_CONTEXT_TRACKING_USER !! 25 select HAVE_C_RECORDMCOUNT
140 select HAVE_DEBUG_KMEMLEAK <<
141 select HAVE_DMA_CONTIGUOUS if MMU <<
142 select HAVE_DYNAMIC_FTRACE if !XIP_KER <<
143 select HAVE_DYNAMIC_FTRACE_WITH_DIRECT <<
144 select HAVE_DYNAMIC_FTRACE_WITH_ARGS i <<
145 select HAVE_FTRACE_MCOUNT_RECORD if !X <<
146 select HAVE_FUNCTION_GRAPH_TRACER 26 select HAVE_FUNCTION_GRAPH_TRACER
147 select HAVE_FUNCTION_GRAPH_RETVAL if H !! 27 select HAVE_KPROBES
148 select HAVE_FUNCTION_TRACER if !XIP_KE !! 28 select HAVE_KRETPROBES
149 select HAVE_EBPF_JIT if MMU <<
150 select HAVE_GUP_FAST if MMU <<
151 select HAVE_FUNCTION_ARG_ACCESS_API <<
152 select HAVE_FUNCTION_ERROR_INJECTION <<
153 select HAVE_GCC_PLUGINS <<
154 select HAVE_GENERIC_VDSO if MMU && 64B <<
155 select HAVE_IRQ_TIME_ACCOUNTING <<
156 select HAVE_KERNEL_BZIP2 if !XIP_KERNE <<
157 select HAVE_KERNEL_GZIP if !XIP_KERNEL <<
158 select HAVE_KERNEL_LZ4 if !XIP_KERNEL <<
159 select HAVE_KERNEL_LZMA if !XIP_KERNEL <<
160 select HAVE_KERNEL_LZO if !XIP_KERNEL <<
161 select HAVE_KERNEL_UNCOMPRESSED if !XI <<
162 select HAVE_KERNEL_ZSTD if !XIP_KERNEL <<
163 select HAVE_KERNEL_XZ if !XIP_KERNEL & <<
164 select HAVE_KPROBES if !XIP_KERNEL <<
165 select HAVE_KRETPROBES if !XIP_KERNEL <<
166 # https://github.com/ClangBuiltLinux/l <<
167 select HAVE_LD_DEAD_CODE_DATA_ELIMINAT <<
168 select HAVE_MOVE_PMD <<
169 select HAVE_MOVE_PUD <<
170 select HAVE_PAGE_SIZE_4KB <<
171 select HAVE_PCI <<
172 select HAVE_PERF_EVENTS <<
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 <<
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 29 select HAVE_SYSCALL_TRACEPOINTS
185 select HOTPLUG_CORE_SYNC_DEAD if HOTPL !! 30 select HAVE_DEBUG_KMEMLEAK
186 select IRQ_DOMAIN !! 31 select HAVE_SYSCALL_TRACEPOINTS
>> 32 select ARCH_HAS_ELF_RANDOMIZE
>> 33 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
>> 34 select RTC_LIB if !MACH_LOONGSON64
>> 35 select GENERIC_ATOMIC64 if !64BIT
>> 36 select HAVE_DMA_CONTIGUOUS
>> 37 select HAVE_DMA_API_DEBUG
>> 38 select GENERIC_IRQ_PROBE
>> 39 select GENERIC_IRQ_SHOW
>> 40 select GENERIC_PCI_IOMAP
>> 41 select HAVE_ARCH_JUMP_LABEL
>> 42 select ARCH_WANT_IPC_PARSE_VERSION
187 select IRQ_FORCED_THREADING 43 select IRQ_FORCED_THREADING
188 select KASAN_VMALLOC if KASAN !! 44 select HAVE_MEMBLOCK
189 select LOCK_MM_AND_FIND_VMA !! 45 select HAVE_MEMBLOCK_NODE_MAP
190 select MMU_GATHER_RCU_TABLE_FREE if SM !! 46 select ARCH_DISCARD_MEMBLOCK
191 select MODULES_USE_ELF_RELA if MODULES !! 47 select GENERIC_SMP_IDLE_THREAD
192 select OF !! 48 select BUILDTIME_EXTABLE_SORT
193 select OF_EARLY_FLATTREE !! 49 select GENERIC_CLOCKEVENTS
194 select OF_IRQ !! 50 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
195 select PCI_DOMAINS_GENERIC if PCI !! 51 select GENERIC_CMOS_UPDATE
196 select PCI_ECAM if (ACPI && PCI) !! 52 select HAVE_MOD_ARCH_SPECIFIC
197 select PCI_MSI if PCI !! 53 select HAVE_NMI
198 select RISCV_ALTERNATIVE if !XIP_KERNE !! 54 select VIRT_TO_BUS
199 select RISCV_APLIC !! 55 select MODULES_USE_ELF_REL if MODULES
200 select RISCV_IMSIC !! 56 select MODULES_USE_ELF_RELA if MODULES && 64BIT
201 select RISCV_INTC !! 57 select CLONE_BACKWARDS
202 select RISCV_TIMER if RISCV_SBI !! 58 select HAVE_DEBUG_STACKOVERFLOW
203 select SIFIVE_PLIC !! 59 select HAVE_CC_STACKPROTECTOR
204 select SPARSE_IRQ !! 60 select CPU_PM if CPU_IDLE
>> 61 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
>> 62 select ARCH_BINFMT_ELF_STATE
205 select SYSCTL_EXCEPTION_TRACE 63 select SYSCTL_EXCEPTION_TRACE
206 select THREAD_INFO_IN_TASK !! 64 select HAVE_VIRT_CPU_ACCOUNTING_GEN
207 select TRACE_IRQFLAGS_SUPPORT !! 65 select HAVE_IRQ_TIME_ACCOUNTING
208 select UACCESS_MEMCPY if !MMU !! 66 select GENERIC_TIME_VSYSCALL
209 select USER_STACKTRACE_SUPPORT !! 67 select ARCH_CLOCKSOURCE_DATA
>> 68 select HANDLE_DOMAIN_IRQ
>> 69 select HAVE_EXIT_THREAD
>> 70 select HAVE_REGS_AND_STACK_ACCESS_API
>> 71 select HAVE_ARCH_HARDENED_USERCOPY
>> 72
>> 73 menu "Machine selection"
>> 74
>> 75 choice
>> 76 prompt "System type"
>> 77 default SGI_IP22
>> 78
>> 79 config MIPS_GENERIC
>> 80 bool "Generic board-agnostic MIPS kernel"
>> 81 select BOOT_RAW
>> 82 select BUILTIN_DTB
>> 83 select CEVT_R4K
>> 84 select CLKSRC_MIPS_GIC
>> 85 select COMMON_CLK
>> 86 select CPU_MIPSR2_IRQ_VI
>> 87 select CPU_MIPSR2_IRQ_EI
>> 88 select CSRC_R4K
>> 89 select DMA_PERDEV_COHERENT
>> 90 select HW_HAS_PCI
>> 91 select IRQ_MIPS_CPU
>> 92 select LIBFDT
>> 93 select MIPS_CPU_SCACHE
>> 94 select MIPS_GIC
>> 95 select MIPS_L1_CACHE_SHIFT_7
>> 96 select NO_EXCEPT_FILL
>> 97 select PCI_DRIVERS_GENERIC
>> 98 select PINCTRL
>> 99 select SMP_UP if SMP
>> 100 select SWAP_IO_SPACE
>> 101 select SYS_HAS_CPU_MIPS32_R1
>> 102 select SYS_HAS_CPU_MIPS32_R2
>> 103 select SYS_HAS_CPU_MIPS32_R6
>> 104 select SYS_HAS_CPU_MIPS64_R1
>> 105 select SYS_HAS_CPU_MIPS64_R2
>> 106 select SYS_HAS_CPU_MIPS64_R6
>> 107 select SYS_SUPPORTS_32BIT_KERNEL
>> 108 select SYS_SUPPORTS_64BIT_KERNEL
>> 109 select SYS_SUPPORTS_BIG_ENDIAN
>> 110 select SYS_SUPPORTS_HIGHMEM
>> 111 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 112 select SYS_SUPPORTS_MICROMIPS
>> 113 select SYS_SUPPORTS_MIPS_CPS
>> 114 select SYS_SUPPORTS_MIPS16
>> 115 select SYS_SUPPORTS_MULTITHREADING
>> 116 select SYS_SUPPORTS_RELOCATABLE
>> 117 select SYS_SUPPORTS_SMARTMIPS
>> 118 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
>> 119 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
>> 120 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
>> 121 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
>> 122 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
>> 123 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
>> 124 select USE_OF
>> 125 help
>> 126 Select this to build a kernel which aims to support multiple boards,
>> 127 generally using a flattened device tree passed from the bootloader
>> 128 using the boot protocol defined in the UHI (Unified Hosting
>> 129 Interface) specification.
>> 130
>> 131 config MIPS_ALCHEMY
>> 132 bool "Alchemy processor based machines"
>> 133 select ARCH_PHYS_ADDR_T_64BIT
>> 134 select CEVT_R4K
>> 135 select CSRC_R4K
>> 136 select IRQ_MIPS_CPU
>> 137 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
>> 138 select SYS_HAS_CPU_MIPS32_R1
>> 139 select SYS_SUPPORTS_32BIT_KERNEL
>> 140 select SYS_SUPPORTS_APM_EMULATION
>> 141 select GPIOLIB
>> 142 select SYS_SUPPORTS_ZBOOT
>> 143 select COMMON_CLK
>> 144
>> 145 config AR7
>> 146 bool "Texas Instruments AR7"
>> 147 select BOOT_ELF32
>> 148 select DMA_NONCOHERENT
>> 149 select CEVT_R4K
>> 150 select CSRC_R4K
>> 151 select IRQ_MIPS_CPU
>> 152 select NO_EXCEPT_FILL
>> 153 select SWAP_IO_SPACE
>> 154 select SYS_HAS_CPU_MIPS32_R1
>> 155 select SYS_HAS_EARLY_PRINTK
>> 156 select SYS_SUPPORTS_32BIT_KERNEL
>> 157 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 158 select SYS_SUPPORTS_MIPS16
>> 159 select SYS_SUPPORTS_ZBOOT_UART16550
>> 160 select GPIOLIB
>> 161 select VLYNQ
>> 162 select HAVE_CLK
>> 163 help
>> 164 Support for the Texas Instruments AR7 System-on-a-Chip
>> 165 family: TNETD7100, 7200 and 7300.
>> 166
>> 167 config ATH25
>> 168 bool "Atheros AR231x/AR531x SoC support"
>> 169 select CEVT_R4K
>> 170 select CSRC_R4K
>> 171 select DMA_NONCOHERENT
>> 172 select IRQ_MIPS_CPU
>> 173 select IRQ_DOMAIN
>> 174 select SYS_HAS_CPU_MIPS32_R1
>> 175 select SYS_SUPPORTS_BIG_ENDIAN
>> 176 select SYS_SUPPORTS_32BIT_KERNEL
>> 177 select SYS_HAS_EARLY_PRINTK
>> 178 help
>> 179 Support for Atheros AR231x and Atheros AR531x based boards
>> 180
>> 181 config ATH79
>> 182 bool "Atheros AR71XX/AR724X/AR913X based boards"
>> 183 select ARCH_HAS_RESET_CONTROLLER
>> 184 select BOOT_RAW
>> 185 select CEVT_R4K
>> 186 select CSRC_R4K
>> 187 select DMA_NONCOHERENT
>> 188 select GPIOLIB
>> 189 select HAVE_CLK
>> 190 select COMMON_CLK
>> 191 select CLKDEV_LOOKUP
>> 192 select IRQ_MIPS_CPU
>> 193 select MIPS_MACHINE
>> 194 select SYS_HAS_CPU_MIPS32_R2
>> 195 select SYS_HAS_EARLY_PRINTK
>> 196 select SYS_SUPPORTS_32BIT_KERNEL
>> 197 select SYS_SUPPORTS_BIG_ENDIAN
>> 198 select SYS_SUPPORTS_MIPS16
>> 199 select SYS_SUPPORTS_ZBOOT_UART_PROM
>> 200 select USE_OF
>> 201 help
>> 202 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
>> 203
>> 204 config BMIPS_GENERIC
>> 205 bool "Broadcom Generic BMIPS kernel"
>> 206 select BOOT_RAW
>> 207 select NO_EXCEPT_FILL
>> 208 select USE_OF
>> 209 select CEVT_R4K
>> 210 select CSRC_R4K
>> 211 select SYNC_R4K
>> 212 select COMMON_CLK
>> 213 select BCM6345_L1_IRQ
>> 214 select BCM7038_L1_IRQ
>> 215 select BCM7120_L2_IRQ
>> 216 select BRCMSTB_L2_IRQ
>> 217 select IRQ_MIPS_CPU
>> 218 select DMA_NONCOHERENT
>> 219 select SYS_SUPPORTS_32BIT_KERNEL
>> 220 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 221 select SYS_SUPPORTS_BIG_ENDIAN
>> 222 select SYS_SUPPORTS_HIGHMEM
>> 223 select SYS_HAS_CPU_BMIPS32_3300
>> 224 select SYS_HAS_CPU_BMIPS4350
>> 225 select SYS_HAS_CPU_BMIPS4380
>> 226 select SYS_HAS_CPU_BMIPS5000
>> 227 select SWAP_IO_SPACE
>> 228 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 229 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 230 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
>> 231 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 232 help
>> 233 Build a generic DT-based kernel image that boots on select
>> 234 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
>> 235 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
>> 236 must be set appropriately for your board.
>> 237
>> 238 config BCM47XX
>> 239 bool "Broadcom BCM47XX based boards"
>> 240 select BOOT_RAW
>> 241 select CEVT_R4K
>> 242 select CSRC_R4K
>> 243 select DMA_NONCOHERENT
>> 244 select HW_HAS_PCI
>> 245 select IRQ_MIPS_CPU
>> 246 select SYS_HAS_CPU_MIPS32_R1
>> 247 select NO_EXCEPT_FILL
>> 248 select SYS_SUPPORTS_32BIT_KERNEL
>> 249 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 250 select SYS_SUPPORTS_MIPS16
>> 251 select SYS_HAS_EARLY_PRINTK
>> 252 select USE_GENERIC_EARLY_PRINTK_8250
>> 253 select GPIOLIB
>> 254 select LEDS_GPIO_REGISTER
>> 255 select BCM47XX_NVRAM
>> 256 select BCM47XX_SPROM
>> 257 help
>> 258 Support for BCM47XX based boards
>> 259
>> 260 config BCM63XX
>> 261 bool "Broadcom BCM63XX based boards"
>> 262 select BOOT_RAW
>> 263 select CEVT_R4K
>> 264 select CSRC_R4K
>> 265 select SYNC_R4K
>> 266 select DMA_NONCOHERENT
>> 267 select IRQ_MIPS_CPU
>> 268 select SYS_SUPPORTS_32BIT_KERNEL
>> 269 select SYS_SUPPORTS_BIG_ENDIAN
>> 270 select SYS_HAS_EARLY_PRINTK
>> 271 select SWAP_IO_SPACE
>> 272 select GPIOLIB
>> 273 select HAVE_CLK
>> 274 select MIPS_L1_CACHE_SHIFT_4
>> 275 help
>> 276 Support for BCM63XX based boards
>> 277
>> 278 config MIPS_COBALT
>> 279 bool "Cobalt Server"
>> 280 select CEVT_R4K
>> 281 select CSRC_R4K
>> 282 select CEVT_GT641XX
>> 283 select DMA_NONCOHERENT
>> 284 select HW_HAS_PCI
>> 285 select I8253
>> 286 select I8259
>> 287 select IRQ_MIPS_CPU
>> 288 select IRQ_GT641XX
>> 289 select PCI_GT64XXX_PCI0
>> 290 select PCI
>> 291 select SYS_HAS_CPU_NEVADA
>> 292 select SYS_HAS_EARLY_PRINTK
>> 293 select SYS_SUPPORTS_32BIT_KERNEL
>> 294 select SYS_SUPPORTS_64BIT_KERNEL
>> 295 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 296 select USE_GENERIC_EARLY_PRINTK_8250
>> 297
>> 298 config MACH_DECSTATION
>> 299 bool "DECstations"
>> 300 select BOOT_ELF32
>> 301 select CEVT_DS1287
>> 302 select CEVT_R4K if CPU_R4X00
>> 303 select CSRC_IOASIC
>> 304 select CSRC_R4K if CPU_R4X00
>> 305 select CPU_DADDI_WORKAROUNDS if 64BIT
>> 306 select CPU_R4000_WORKAROUNDS if 64BIT
>> 307 select CPU_R4400_WORKAROUNDS if 64BIT
>> 308 select DMA_NONCOHERENT
>> 309 select NO_IOPORT_MAP
>> 310 select IRQ_MIPS_CPU
>> 311 select SYS_HAS_CPU_R3000
>> 312 select SYS_HAS_CPU_R4X00
>> 313 select SYS_SUPPORTS_32BIT_KERNEL
>> 314 select SYS_SUPPORTS_64BIT_KERNEL
>> 315 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 316 select SYS_SUPPORTS_128HZ
>> 317 select SYS_SUPPORTS_256HZ
>> 318 select SYS_SUPPORTS_1024HZ
>> 319 select MIPS_L1_CACHE_SHIFT_4
>> 320 help
>> 321 This enables support for DEC's MIPS based workstations. For details
>> 322 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
>> 323 DECstation porting pages on <http://decstation.unix-ag.org/>.
>> 324
>> 325 If you have one of the following DECstation Models you definitely
>> 326 want to choose R4xx0 for the CPU Type:
>> 327
>> 328 DECstation 5000/50
>> 329 DECstation 5000/150
>> 330 DECstation 5000/260
>> 331 DECsystem 5900/260
>> 332
>> 333 otherwise choose R3000.
>> 334
>> 335 config MACH_JAZZ
>> 336 bool "Jazz family of machines"
>> 337 select FW_ARC
>> 338 select FW_ARC32
>> 339 select ARCH_MAY_HAVE_PC_FDC
>> 340 select CEVT_R4K
>> 341 select CSRC_R4K
>> 342 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 343 select GENERIC_ISA_DMA
>> 344 select HAVE_PCSPKR_PLATFORM
>> 345 select IRQ_MIPS_CPU
>> 346 select I8253
>> 347 select I8259
>> 348 select ISA
>> 349 select SYS_HAS_CPU_R4X00
>> 350 select SYS_SUPPORTS_32BIT_KERNEL
>> 351 select SYS_SUPPORTS_64BIT_KERNEL
>> 352 select SYS_SUPPORTS_100HZ
>> 353 help
>> 354 This a family of machines based on the MIPS R4030 chipset which was
>> 355 used by several vendors to build RISC/os and Windows NT workstations.
>> 356 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
>> 357 Olivetti M700-10 workstations.
>> 358
>> 359 config MACH_INGENIC
>> 360 bool "Ingenic SoC based machines"
>> 361 select SYS_SUPPORTS_32BIT_KERNEL
>> 362 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 363 select SYS_SUPPORTS_ZBOOT_UART16550
>> 364 select DMA_NONCOHERENT
>> 365 select IRQ_MIPS_CPU
>> 366 select GPIOLIB
>> 367 select COMMON_CLK
>> 368 select GENERIC_IRQ_CHIP
>> 369 select BUILTIN_DTB
>> 370 select USE_OF
>> 371 select LIBFDT
>> 372
>> 373 config LANTIQ
>> 374 bool "Lantiq based platforms"
>> 375 select DMA_NONCOHERENT
>> 376 select IRQ_MIPS_CPU
>> 377 select CEVT_R4K
>> 378 select CSRC_R4K
>> 379 select SYS_HAS_CPU_MIPS32_R1
>> 380 select SYS_HAS_CPU_MIPS32_R2
>> 381 select SYS_SUPPORTS_BIG_ENDIAN
>> 382 select SYS_SUPPORTS_32BIT_KERNEL
>> 383 select SYS_SUPPORTS_MIPS16
>> 384 select SYS_SUPPORTS_MULTITHREADING
>> 385 select SYS_HAS_EARLY_PRINTK
>> 386 select GPIOLIB
>> 387 select SWAP_IO_SPACE
>> 388 select BOOT_RAW
>> 389 select CLKDEV_LOOKUP
>> 390 select USE_OF
>> 391 select PINCTRL
>> 392 select PINCTRL_LANTIQ
>> 393 select ARCH_HAS_RESET_CONTROLLER
>> 394 select RESET_CONTROLLER
>> 395
>> 396 config LASAT
>> 397 bool "LASAT Networks platforms"
>> 398 select CEVT_R4K
>> 399 select CRC32
>> 400 select CSRC_R4K
>> 401 select DMA_NONCOHERENT
>> 402 select SYS_HAS_EARLY_PRINTK
>> 403 select HW_HAS_PCI
>> 404 select IRQ_MIPS_CPU
>> 405 select PCI_GT64XXX_PCI0
>> 406 select MIPS_NILE4
>> 407 select R5000_CPU_SCACHE
>> 408 select SYS_HAS_CPU_R5000
>> 409 select SYS_SUPPORTS_32BIT_KERNEL
>> 410 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
>> 411 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 412
>> 413 config MACH_LOONGSON32
>> 414 bool "Loongson-1 family of machines"
>> 415 select SYS_SUPPORTS_ZBOOT
>> 416 help
>> 417 This enables support for the Loongson-1 family of machines.
>> 418
>> 419 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
>> 420 the Institute of Computing Technology (ICT), Chinese Academy of
>> 421 Sciences (CAS).
>> 422
>> 423 config MACH_LOONGSON64
>> 424 bool "Loongson-2/3 family of machines"
>> 425 select SYS_SUPPORTS_ZBOOT
>> 426 help
>> 427 This enables the support of Loongson-2/3 family of machines.
>> 428
>> 429 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
>> 430 family of multi-core CPUs. They are both 64-bit general-purpose
>> 431 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
>> 432 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
>> 433 in the People's Republic of China. The chief architect is Professor
>> 434 Weiwu Hu.
>> 435
>> 436 config MACH_PISTACHIO
>> 437 bool "IMG Pistachio SoC based boards"
>> 438 select BOOT_ELF32
>> 439 select BOOT_RAW
>> 440 select CEVT_R4K
>> 441 select CLKSRC_MIPS_GIC
>> 442 select COMMON_CLK
>> 443 select CSRC_R4K
>> 444 select DMA_NONCOHERENT
>> 445 select GPIOLIB
>> 446 select IRQ_MIPS_CPU
>> 447 select LIBFDT
>> 448 select MFD_SYSCON
>> 449 select MIPS_CPU_SCACHE
>> 450 select MIPS_GIC
>> 451 select PINCTRL
>> 452 select REGULATOR
>> 453 select SYS_HAS_CPU_MIPS32_R2
>> 454 select SYS_SUPPORTS_32BIT_KERNEL
>> 455 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 456 select SYS_SUPPORTS_MIPS_CPS
>> 457 select SYS_SUPPORTS_MULTITHREADING
>> 458 select SYS_SUPPORTS_RELOCATABLE
>> 459 select SYS_SUPPORTS_ZBOOT
>> 460 select SYS_HAS_EARLY_PRINTK
>> 461 select USE_GENERIC_EARLY_PRINTK_8250
>> 462 select USE_OF
>> 463 help
>> 464 This enables support for the IMG Pistachio SoC platform.
>> 465
>> 466 config MACH_XILFPGA
>> 467 bool "MIPSfpga Xilinx based boards"
>> 468 select BOOT_ELF32
>> 469 select BOOT_RAW
>> 470 select BUILTIN_DTB
>> 471 select CEVT_R4K
>> 472 select COMMON_CLK
>> 473 select CSRC_R4K
>> 474 select GPIOLIB
>> 475 select IRQ_MIPS_CPU
>> 476 select LIBFDT
>> 477 select MIPS_CPU_SCACHE
>> 478 select SYS_HAS_EARLY_PRINTK
>> 479 select SYS_HAS_CPU_MIPS32_R2
>> 480 select SYS_SUPPORTS_32BIT_KERNEL
>> 481 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 482 select SYS_SUPPORTS_ZBOOT_UART16550
>> 483 select USE_OF
>> 484 select USE_GENERIC_EARLY_PRINTK_8250
>> 485 select XILINX_INTC
>> 486 help
>> 487 This enables support for the IMG University Program MIPSfpga platform.
>> 488
>> 489 config MIPS_MALTA
>> 490 bool "MIPS Malta board"
>> 491 select ARCH_MAY_HAVE_PC_FDC
>> 492 select BOOT_ELF32
>> 493 select BOOT_RAW
>> 494 select BUILTIN_DTB
>> 495 select CEVT_R4K
>> 496 select CSRC_R4K
>> 497 select CLKSRC_MIPS_GIC
>> 498 select COMMON_CLK
>> 499 select DMA_MAYBE_COHERENT
>> 500 select GENERIC_ISA_DMA
>> 501 select HAVE_PCSPKR_PLATFORM
>> 502 select IRQ_MIPS_CPU
>> 503 select MIPS_GIC
>> 504 select HW_HAS_PCI
>> 505 select I8253
>> 506 select I8259
>> 507 select MIPS_BONITO64
>> 508 select MIPS_CPU_SCACHE
>> 509 select MIPS_L1_CACHE_SHIFT_6
>> 510 select PCI_GT64XXX_PCI0
>> 511 select MIPS_MSC
>> 512 select SMP_UP if SMP
>> 513 select SWAP_IO_SPACE
>> 514 select SYS_HAS_CPU_MIPS32_R1
>> 515 select SYS_HAS_CPU_MIPS32_R2
>> 516 select SYS_HAS_CPU_MIPS32_R3_5
>> 517 select SYS_HAS_CPU_MIPS32_R5
>> 518 select SYS_HAS_CPU_MIPS32_R6
>> 519 select SYS_HAS_CPU_MIPS64_R1
>> 520 select SYS_HAS_CPU_MIPS64_R2
>> 521 select SYS_HAS_CPU_MIPS64_R6
>> 522 select SYS_HAS_CPU_NEVADA
>> 523 select SYS_HAS_CPU_RM7000
>> 524 select SYS_SUPPORTS_32BIT_KERNEL
>> 525 select SYS_SUPPORTS_64BIT_KERNEL
>> 526 select SYS_SUPPORTS_BIG_ENDIAN
>> 527 select SYS_SUPPORTS_HIGHMEM
>> 528 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 529 select SYS_SUPPORTS_MICROMIPS
>> 530 select SYS_SUPPORTS_MIPS_CMP
>> 531 select SYS_SUPPORTS_MIPS_CPS
>> 532 select SYS_SUPPORTS_MIPS16
>> 533 select SYS_SUPPORTS_MULTITHREADING
>> 534 select SYS_SUPPORTS_SMARTMIPS
>> 535 select SYS_SUPPORTS_ZBOOT
>> 536 select SYS_SUPPORTS_RELOCATABLE
>> 537 select USE_OF
>> 538 select LIBFDT
210 select ZONE_DMA32 if 64BIT 539 select ZONE_DMA32 if 64BIT
>> 540 select BUILTIN_DTB
>> 541 select LIBFDT
>> 542 help
>> 543 This enables support for the MIPS Technologies Malta evaluation
>> 544 board.
211 545
212 config RUSTC_SUPPORTS_RISCV !! 546 config MACH_PIC32
213 def_bool y !! 547 bool "Microchip PIC32 Family"
214 depends on 64BIT !! 548 help
215 # Shadow call stack requires rustc ver !! 549 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) <<
232 550
233 config RISCV_USE_LINKER_RELAXATION !! 551 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
234 def_bool y !! 552 microcontrollers.
235 # https://github.com/llvm/llvm-project !! 553
236 depends on !LD_IS_LLD || LLD_VERSION > !! 554 config NEC_MARKEINS
>> 555 bool "NEC EMMA2RH Mark-eins board"
>> 556 select SOC_EMMA2RH
>> 557 select HW_HAS_PCI
>> 558 help
>> 559 This enables support for the NEC Electronics Mark-eins boards.
>> 560
>> 561 config MACH_VR41XX
>> 562 bool "NEC VR4100 series based machines"
>> 563 select CEVT_R4K
>> 564 select CSRC_R4K
>> 565 select SYS_HAS_CPU_VR41XX
>> 566 select SYS_SUPPORTS_MIPS16
>> 567 select GPIOLIB
>> 568
>> 569 config NXP_STB220
>> 570 bool "NXP STB220 board"
>> 571 select SOC_PNX833X
>> 572 help
>> 573 Support for NXP Semiconductors STB220 Development Board.
>> 574
>> 575 config NXP_STB225
>> 576 bool "NXP 225 board"
>> 577 select SOC_PNX833X
>> 578 select SOC_PNX8335
>> 579 help
>> 580 Support for NXP Semiconductors STB225 Development Board.
>> 581
>> 582 config PMC_MSP
>> 583 bool "PMC-Sierra MSP chipsets"
>> 584 select CEVT_R4K
>> 585 select CSRC_R4K
>> 586 select DMA_NONCOHERENT
>> 587 select SWAP_IO_SPACE
>> 588 select NO_EXCEPT_FILL
>> 589 select BOOT_RAW
>> 590 select SYS_HAS_CPU_MIPS32_R1
>> 591 select SYS_HAS_CPU_MIPS32_R2
>> 592 select SYS_SUPPORTS_32BIT_KERNEL
>> 593 select SYS_SUPPORTS_BIG_ENDIAN
>> 594 select SYS_SUPPORTS_MIPS16
>> 595 select IRQ_MIPS_CPU
>> 596 select SERIAL_8250
>> 597 select SERIAL_8250_CONSOLE
>> 598 select USB_EHCI_BIG_ENDIAN_MMIO
>> 599 select USB_EHCI_BIG_ENDIAN_DESC
>> 600 help
>> 601 This adds support for the PMC-Sierra family of Multi-Service
>> 602 Processor System-On-A-Chips. These parts include a number
>> 603 of integrated peripherals, interfaces and DSPs in addition to
>> 604 a variety of MIPS cores.
>> 605
>> 606 config RALINK
>> 607 bool "Ralink based machines"
>> 608 select CEVT_R4K
>> 609 select CSRC_R4K
>> 610 select BOOT_RAW
>> 611 select DMA_NONCOHERENT
>> 612 select IRQ_MIPS_CPU
>> 613 select USE_OF
>> 614 select SYS_HAS_CPU_MIPS32_R1
>> 615 select SYS_HAS_CPU_MIPS32_R2
>> 616 select SYS_SUPPORTS_32BIT_KERNEL
>> 617 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 618 select SYS_SUPPORTS_MIPS16
>> 619 select SYS_HAS_EARLY_PRINTK
>> 620 select CLKDEV_LOOKUP
>> 621 select ARCH_HAS_RESET_CONTROLLER
>> 622 select RESET_CONTROLLER
>> 623
>> 624 config SGI_IP22
>> 625 bool "SGI IP22 (Indy/Indigo2)"
>> 626 select FW_ARC
>> 627 select FW_ARC32
>> 628 select BOOT_ELF32
>> 629 select CEVT_R4K
>> 630 select CSRC_R4K
>> 631 select DEFAULT_SGI_PARTITION
>> 632 select DMA_NONCOHERENT
>> 633 select HW_HAS_EISA
>> 634 select I8253
>> 635 select I8259
>> 636 select IP22_CPU_SCACHE
>> 637 select IRQ_MIPS_CPU
>> 638 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 639 select SGI_HAS_I8042
>> 640 select SGI_HAS_INDYDOG
>> 641 select SGI_HAS_HAL2
>> 642 select SGI_HAS_SEEQ
>> 643 select SGI_HAS_WD93
>> 644 select SGI_HAS_ZILOG
>> 645 select SWAP_IO_SPACE
>> 646 select SYS_HAS_CPU_R4X00
>> 647 select SYS_HAS_CPU_R5000
>> 648 #
>> 649 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 650 # memory during early boot on some machines.
>> 651 #
>> 652 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 653 # for a more details discussion
>> 654 #
>> 655 # select SYS_HAS_EARLY_PRINTK
>> 656 select SYS_SUPPORTS_32BIT_KERNEL
>> 657 select SYS_SUPPORTS_64BIT_KERNEL
>> 658 select SYS_SUPPORTS_BIG_ENDIAN
>> 659 select MIPS_L1_CACHE_SHIFT_7
>> 660 help
>> 661 This are the SGI Indy, Challenge S and Indigo2, as well as certain
>> 662 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
>> 663 that runs on these, say Y here.
>> 664
>> 665 config SGI_IP27
>> 666 bool "SGI IP27 (Origin200/2000)"
>> 667 select FW_ARC
>> 668 select FW_ARC64
>> 669 select BOOT_ELF64
>> 670 select DEFAULT_SGI_PARTITION
>> 671 select DMA_COHERENT
>> 672 select SYS_HAS_EARLY_PRINTK
>> 673 select HW_HAS_PCI
>> 674 select NR_CPUS_DEFAULT_64
>> 675 select SYS_HAS_CPU_R10000
>> 676 select SYS_SUPPORTS_64BIT_KERNEL
>> 677 select SYS_SUPPORTS_BIG_ENDIAN
>> 678 select SYS_SUPPORTS_NUMA
>> 679 select SYS_SUPPORTS_SMP
>> 680 select MIPS_L1_CACHE_SHIFT_7
>> 681 help
>> 682 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
>> 683 workstations. To compile a Linux kernel that runs on these, say Y
>> 684 here.
237 685
238 # https://github.com/llvm/llvm-project/commit/ !! 686 config SGI_IP28
239 config ARCH_HAS_BROKEN_DWARF5 !! 687 bool "SGI IP28 (Indigo2 R10k)"
240 def_bool y !! 688 select FW_ARC
241 depends on RISCV_USE_LINKER_RELAXATION !! 689 select FW_ARC64
242 # https://github.com/llvm/llvm-project !! 690 select BOOT_ELF64
243 depends on AS_IS_LLVM && AS_VERSION < !! 691 select CEVT_R4K
244 # https://github.com/llvm/llvm-project !! 692 select CSRC_R4K
245 depends on LD_IS_LLD && LLD_VERSION < !! 693 select DEFAULT_SGI_PARTITION
>> 694 select DMA_NONCOHERENT
>> 695 select GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 696 select IRQ_MIPS_CPU
>> 697 select HW_HAS_EISA
>> 698 select I8253
>> 699 select I8259
>> 700 select SGI_HAS_I8042
>> 701 select SGI_HAS_INDYDOG
>> 702 select SGI_HAS_HAL2
>> 703 select SGI_HAS_SEEQ
>> 704 select SGI_HAS_WD93
>> 705 select SGI_HAS_ZILOG
>> 706 select SWAP_IO_SPACE
>> 707 select SYS_HAS_CPU_R10000
>> 708 #
>> 709 # Disable EARLY_PRINTK for now since it leads to overwritten prom
>> 710 # memory during early boot on some machines.
>> 711 #
>> 712 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
>> 713 # for a more details discussion
>> 714 #
>> 715 # select SYS_HAS_EARLY_PRINTK
>> 716 select SYS_SUPPORTS_64BIT_KERNEL
>> 717 select SYS_SUPPORTS_BIG_ENDIAN
>> 718 select MIPS_L1_CACHE_SHIFT_7
>> 719 help
>> 720 This is the SGI Indigo2 with R10000 processor. To compile a Linux
>> 721 kernel that runs on these, say Y here.
>> 722
>> 723 config SGI_IP32
>> 724 bool "SGI IP32 (O2)"
>> 725 select FW_ARC
>> 726 select FW_ARC32
>> 727 select BOOT_ELF32
>> 728 select CEVT_R4K
>> 729 select CSRC_R4K
>> 730 select DMA_NONCOHERENT
>> 731 select HW_HAS_PCI
>> 732 select IRQ_MIPS_CPU
>> 733 select R5000_CPU_SCACHE
>> 734 select RM7000_CPU_SCACHE
>> 735 select SYS_HAS_CPU_R5000
>> 736 select SYS_HAS_CPU_R10000 if BROKEN
>> 737 select SYS_HAS_CPU_RM7000
>> 738 select SYS_HAS_CPU_NEVADA
>> 739 select SYS_SUPPORTS_64BIT_KERNEL
>> 740 select SYS_SUPPORTS_BIG_ENDIAN
>> 741 help
>> 742 If you want this kernel to run on SGI O2 workstation, say Y here.
>> 743
>> 744 config SIBYTE_CRHINE
>> 745 bool "Sibyte BCM91120C-CRhine"
>> 746 select BOOT_ELF32
>> 747 select DMA_COHERENT
>> 748 select SIBYTE_BCM1120
>> 749 select SWAP_IO_SPACE
>> 750 select SYS_HAS_CPU_SB1
>> 751 select SYS_SUPPORTS_BIG_ENDIAN
>> 752 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 753
>> 754 config SIBYTE_CARMEL
>> 755 bool "Sibyte BCM91120x-Carmel"
>> 756 select BOOT_ELF32
>> 757 select DMA_COHERENT
>> 758 select SIBYTE_BCM1120
>> 759 select SWAP_IO_SPACE
>> 760 select SYS_HAS_CPU_SB1
>> 761 select SYS_SUPPORTS_BIG_ENDIAN
>> 762 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 763
>> 764 config SIBYTE_CRHONE
>> 765 bool "Sibyte BCM91125C-CRhone"
>> 766 select BOOT_ELF32
>> 767 select DMA_COHERENT
>> 768 select SIBYTE_BCM1125
>> 769 select SWAP_IO_SPACE
>> 770 select SYS_HAS_CPU_SB1
>> 771 select SYS_SUPPORTS_BIG_ENDIAN
>> 772 select SYS_SUPPORTS_HIGHMEM
>> 773 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 774
>> 775 config SIBYTE_RHONE
>> 776 bool "Sibyte BCM91125E-Rhone"
>> 777 select BOOT_ELF32
>> 778 select DMA_COHERENT
>> 779 select SIBYTE_BCM1125H
>> 780 select SWAP_IO_SPACE
>> 781 select SYS_HAS_CPU_SB1
>> 782 select SYS_SUPPORTS_BIG_ENDIAN
>> 783 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 784
>> 785 config SIBYTE_SWARM
>> 786 bool "Sibyte BCM91250A-SWARM"
>> 787 select BOOT_ELF32
>> 788 select DMA_COHERENT
>> 789 select HAVE_PATA_PLATFORM
>> 790 select SIBYTE_SB1250
>> 791 select SWAP_IO_SPACE
>> 792 select SYS_HAS_CPU_SB1
>> 793 select SYS_SUPPORTS_BIG_ENDIAN
>> 794 select SYS_SUPPORTS_HIGHMEM
>> 795 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 796 select ZONE_DMA32 if 64BIT
246 797
247 config ARCH_MMAP_RND_BITS_MIN !! 798 config SIBYTE_LITTLESUR
248 default 18 if 64BIT !! 799 bool "Sibyte BCM91250C2-LittleSur"
249 default 8 !! 800 select BOOT_ELF32
>> 801 select DMA_COHERENT
>> 802 select HAVE_PATA_PLATFORM
>> 803 select SIBYTE_SB1250
>> 804 select SWAP_IO_SPACE
>> 805 select SYS_HAS_CPU_SB1
>> 806 select SYS_SUPPORTS_BIG_ENDIAN
>> 807 select SYS_SUPPORTS_HIGHMEM
>> 808 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 809
>> 810 config SIBYTE_SENTOSA
>> 811 bool "Sibyte BCM91250E-Sentosa"
>> 812 select BOOT_ELF32
>> 813 select DMA_COHERENT
>> 814 select SIBYTE_SB1250
>> 815 select SWAP_IO_SPACE
>> 816 select SYS_HAS_CPU_SB1
>> 817 select SYS_SUPPORTS_BIG_ENDIAN
>> 818 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 819
>> 820 config SIBYTE_BIGSUR
>> 821 bool "Sibyte BCM91480B-BigSur"
>> 822 select BOOT_ELF32
>> 823 select DMA_COHERENT
>> 824 select NR_CPUS_DEFAULT_4
>> 825 select SIBYTE_BCM1x80
>> 826 select SWAP_IO_SPACE
>> 827 select SYS_HAS_CPU_SB1
>> 828 select SYS_SUPPORTS_BIG_ENDIAN
>> 829 select SYS_SUPPORTS_HIGHMEM
>> 830 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 831 select ZONE_DMA32 if 64BIT
250 832
251 config ARCH_MMAP_RND_COMPAT_BITS_MIN !! 833 config SNI_RM
252 default 8 !! 834 bool "SNI RM200/300/400"
>> 835 select FW_ARC if CPU_LITTLE_ENDIAN
>> 836 select FW_ARC32 if CPU_LITTLE_ENDIAN
>> 837 select FW_SNIPROM if CPU_BIG_ENDIAN
>> 838 select ARCH_MAY_HAVE_PC_FDC
>> 839 select BOOT_ELF32
>> 840 select CEVT_R4K
>> 841 select CSRC_R4K
>> 842 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
>> 843 select DMA_NONCOHERENT
>> 844 select GENERIC_ISA_DMA
>> 845 select HAVE_PCSPKR_PLATFORM
>> 846 select HW_HAS_EISA
>> 847 select HW_HAS_PCI
>> 848 select IRQ_MIPS_CPU
>> 849 select I8253
>> 850 select I8259
>> 851 select ISA
>> 852 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
>> 853 select SYS_HAS_CPU_R4X00
>> 854 select SYS_HAS_CPU_R5000
>> 855 select SYS_HAS_CPU_R10000
>> 856 select R5000_CPU_SCACHE
>> 857 select SYS_HAS_EARLY_PRINTK
>> 858 select SYS_SUPPORTS_32BIT_KERNEL
>> 859 select SYS_SUPPORTS_64BIT_KERNEL
>> 860 select SYS_SUPPORTS_BIG_ENDIAN
>> 861 select SYS_SUPPORTS_HIGHMEM
>> 862 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 863 help
>> 864 The SNI RM200/300/400 are MIPS-based machines manufactured by
>> 865 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
>> 866 Technology and now in turn merged with Fujitsu. Say Y here to
>> 867 support this machine type.
>> 868
>> 869 config MACH_TX39XX
>> 870 bool "Toshiba TX39 series based machines"
>> 871
>> 872 config MACH_TX49XX
>> 873 bool "Toshiba TX49 series based machines"
>> 874
>> 875 config MIKROTIK_RB532
>> 876 bool "Mikrotik RB532 boards"
>> 877 select CEVT_R4K
>> 878 select CSRC_R4K
>> 879 select DMA_NONCOHERENT
>> 880 select HW_HAS_PCI
>> 881 select IRQ_MIPS_CPU
>> 882 select SYS_HAS_CPU_MIPS32_R1
>> 883 select SYS_SUPPORTS_32BIT_KERNEL
>> 884 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 885 select SWAP_IO_SPACE
>> 886 select BOOT_RAW
>> 887 select GPIOLIB
>> 888 select MIPS_L1_CACHE_SHIFT_4
>> 889 help
>> 890 Support the Mikrotik(tm) RouterBoard 532 series,
>> 891 based on the IDT RC32434 SoC.
>> 892
>> 893 config CAVIUM_OCTEON_SOC
>> 894 bool "Cavium Networks Octeon SoC based boards"
>> 895 select CEVT_R4K
>> 896 select ARCH_PHYS_ADDR_T_64BIT
>> 897 select DMA_COHERENT
>> 898 select SYS_SUPPORTS_64BIT_KERNEL
>> 899 select SYS_SUPPORTS_BIG_ENDIAN
>> 900 select EDAC_SUPPORT
>> 901 select EDAC_ATOMIC_SCRUB
>> 902 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 903 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
>> 904 select SYS_HAS_EARLY_PRINTK
>> 905 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 906 select HW_HAS_PCI
>> 907 select ZONE_DMA32
>> 908 select HOLES_IN_ZONE
>> 909 select GPIOLIB
>> 910 select LIBFDT
>> 911 select USE_OF
>> 912 select ARCH_SPARSEMEM_ENABLE
>> 913 select SYS_SUPPORTS_SMP
>> 914 select NR_CPUS_DEFAULT_16
>> 915 select BUILTIN_DTB
>> 916 select MTD_COMPLEX_MAPPINGS
>> 917 select SYS_SUPPORTS_RELOCATABLE
>> 918 help
>> 919 This option supports all of the Octeon reference boards from Cavium
>> 920 Networks. It builds a kernel that dynamically determines the Octeon
>> 921 CPU type and supports all known board reference implementations.
>> 922 Some of the supported boards are:
>> 923 EBT3000
>> 924 EBH3000
>> 925 EBH3100
>> 926 Thunder
>> 927 Kodama
>> 928 Hikari
>> 929 Say Y here for most Octeon reference boards.
>> 930
>> 931 config NLM_XLR_BOARD
>> 932 bool "Netlogic XLR/XLS based systems"
>> 933 select BOOT_ELF32
>> 934 select NLM_COMMON
>> 935 select SYS_HAS_CPU_XLR
>> 936 select SYS_SUPPORTS_SMP
>> 937 select HW_HAS_PCI
>> 938 select SWAP_IO_SPACE
>> 939 select SYS_SUPPORTS_32BIT_KERNEL
>> 940 select SYS_SUPPORTS_64BIT_KERNEL
>> 941 select ARCH_PHYS_ADDR_T_64BIT
>> 942 select SYS_SUPPORTS_BIG_ENDIAN
>> 943 select SYS_SUPPORTS_HIGHMEM
>> 944 select DMA_COHERENT
>> 945 select NR_CPUS_DEFAULT_32
>> 946 select CEVT_R4K
>> 947 select CSRC_R4K
>> 948 select IRQ_MIPS_CPU
>> 949 select ZONE_DMA32 if 64BIT
>> 950 select SYNC_R4K
>> 951 select SYS_HAS_EARLY_PRINTK
>> 952 select SYS_SUPPORTS_ZBOOT
>> 953 select SYS_SUPPORTS_ZBOOT_UART16550
>> 954 help
>> 955 Support for systems based on Netlogic XLR and XLS processors.
>> 956 Say Y here if you have a XLR or XLS based board.
>> 957
>> 958 config NLM_XLP_BOARD
>> 959 bool "Netlogic XLP based systems"
>> 960 select BOOT_ELF32
>> 961 select NLM_COMMON
>> 962 select SYS_HAS_CPU_XLP
>> 963 select SYS_SUPPORTS_SMP
>> 964 select HW_HAS_PCI
>> 965 select SYS_SUPPORTS_32BIT_KERNEL
>> 966 select SYS_SUPPORTS_64BIT_KERNEL
>> 967 select ARCH_PHYS_ADDR_T_64BIT
>> 968 select GPIOLIB
>> 969 select SYS_SUPPORTS_BIG_ENDIAN
>> 970 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 971 select SYS_SUPPORTS_HIGHMEM
>> 972 select DMA_COHERENT
>> 973 select NR_CPUS_DEFAULT_32
>> 974 select CEVT_R4K
>> 975 select CSRC_R4K
>> 976 select IRQ_MIPS_CPU
>> 977 select ZONE_DMA32 if 64BIT
>> 978 select SYNC_R4K
>> 979 select SYS_HAS_EARLY_PRINTK
>> 980 select USE_OF
>> 981 select SYS_SUPPORTS_ZBOOT
>> 982 select SYS_SUPPORTS_ZBOOT_UART16550
>> 983 help
>> 984 This board is based on Netlogic XLP Processor.
>> 985 Say Y here if you have a XLP based board.
>> 986
>> 987 config MIPS_PARAVIRT
>> 988 bool "Para-Virtualized guest system"
>> 989 select CEVT_R4K
>> 990 select CSRC_R4K
>> 991 select DMA_COHERENT
>> 992 select SYS_SUPPORTS_64BIT_KERNEL
>> 993 select SYS_SUPPORTS_32BIT_KERNEL
>> 994 select SYS_SUPPORTS_BIG_ENDIAN
>> 995 select SYS_SUPPORTS_SMP
>> 996 select NR_CPUS_DEFAULT_4
>> 997 select SYS_HAS_EARLY_PRINTK
>> 998 select SYS_HAS_CPU_MIPS32_R2
>> 999 select SYS_HAS_CPU_MIPS64_R2
>> 1000 select SYS_HAS_CPU_CAVIUM_OCTEON
>> 1001 select HW_HAS_PCI
>> 1002 select SWAP_IO_SPACE
>> 1003 help
>> 1004 This option supports guest running under ????
253 1005
254 # max bits determined by the following formula !! 1006 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 1007
260 config ARCH_MMAP_RND_COMPAT_BITS_MAX !! 1008 source "arch/mips/alchemy/Kconfig"
261 default 17 !! 1009 source "arch/mips/ath25/Kconfig"
>> 1010 source "arch/mips/ath79/Kconfig"
>> 1011 source "arch/mips/bcm47xx/Kconfig"
>> 1012 source "arch/mips/bcm63xx/Kconfig"
>> 1013 source "arch/mips/bmips/Kconfig"
>> 1014 source "arch/mips/generic/Kconfig"
>> 1015 source "arch/mips/jazz/Kconfig"
>> 1016 source "arch/mips/jz4740/Kconfig"
>> 1017 source "arch/mips/lantiq/Kconfig"
>> 1018 source "arch/mips/lasat/Kconfig"
>> 1019 source "arch/mips/pic32/Kconfig"
>> 1020 source "arch/mips/pistachio/Kconfig"
>> 1021 source "arch/mips/pmcs-msp71xx/Kconfig"
>> 1022 source "arch/mips/ralink/Kconfig"
>> 1023 source "arch/mips/sgi-ip27/Kconfig"
>> 1024 source "arch/mips/sibyte/Kconfig"
>> 1025 source "arch/mips/txx9/Kconfig"
>> 1026 source "arch/mips/vr41xx/Kconfig"
>> 1027 source "arch/mips/cavium-octeon/Kconfig"
>> 1028 source "arch/mips/loongson32/Kconfig"
>> 1029 source "arch/mips/loongson64/Kconfig"
>> 1030 source "arch/mips/netlogic/Kconfig"
>> 1031 source "arch/mips/paravirt/Kconfig"
>> 1032 source "arch/mips/xilfpga/Kconfig"
>> 1033
>> 1034 endmenu
262 1035
263 # set if we run in machine mode, cleared if we !! 1036 config RWSEM_GENERIC_SPINLOCK
264 config RISCV_M_MODE !! 1037 bool
265 bool "Build a kernel that runs in mach <<
266 depends on !MMU <<
267 default y 1038 default y
268 help <<
269 Select this option if you want to ru <<
270 without the assistance of any other <<
271 1039
272 # set if we are running in S-mode and can use !! 1040 config RWSEM_XCHGADD_ALGORITHM
273 config RISCV_SBI !! 1041 bool
>> 1042
>> 1043 config ARCH_HAS_ILOG2_U32
>> 1044 bool
>> 1045 default n
>> 1046
>> 1047 config ARCH_HAS_ILOG2_U64
>> 1048 bool
>> 1049 default n
>> 1050
>> 1051 config GENERIC_HWEIGHT
274 bool 1052 bool
275 depends on !RISCV_M_MODE <<
276 default y 1053 default y
277 1054
278 config MMU !! 1055 config GENERIC_CALIBRATE_DELAY
279 bool "MMU-based Paged Memory Managemen !! 1056 bool
280 default y 1057 default y
281 help <<
282 Select if you want MMU-based virtual <<
283 support by paged memory management. <<
284 1058
285 config PAGE_OFFSET !! 1059 config SCHED_OMIT_FRAME_POINTER
286 hex !! 1060 bool
287 default 0x80000000 if !MMU && RISCV_M_ !! 1061 default y
288 default 0x80200000 if !MMU <<
289 default 0xc0000000 if 32BIT <<
290 default 0xff60000000000000 if 64BIT <<
291 <<
292 config KASAN_SHADOW_OFFSET <<
293 hex <<
294 depends on KASAN_GENERIC <<
295 default 0xdfffffff00000000 if 64BIT <<
296 default 0xffffffff if 32BIT <<
297 1062
298 config ARCH_FLATMEM_ENABLE !! 1063 #
299 def_bool !NUMA !! 1064 # Select some configuration options automatically based on user selections.
>> 1065 #
>> 1066 config FW_ARC
>> 1067 bool
300 1068
301 config ARCH_SPARSEMEM_ENABLE !! 1069 config ARCH_MAY_HAVE_PC_FDC
302 def_bool y !! 1070 bool
303 depends on MMU <<
304 select SPARSEMEM_STATIC if 32BIT && SP <<
305 select SPARSEMEM_VMEMMAP_ENABLE if 64B <<
306 1071
307 config ARCH_SELECT_MEMORY_MODEL !! 1072 config BOOT_RAW
308 def_bool ARCH_SPARSEMEM_ENABLE !! 1073 bool
309 1074
310 config ARCH_SUPPORTS_UPROBES !! 1075 config CEVT_BCM1480
311 def_bool y !! 1076 bool
312 1077
313 config STACKTRACE_SUPPORT !! 1078 config CEVT_DS1287
314 def_bool y !! 1079 bool
315 1080
316 config GENERIC_BUG !! 1081 config CEVT_GT641XX
317 def_bool y !! 1082 bool
318 depends on BUG <<
319 select GENERIC_BUG_RELATIVE_POINTERS i <<
320 1083
321 config GENERIC_BUG_RELATIVE_POINTERS !! 1084 config CEVT_R4K
322 bool 1085 bool
323 1086
324 config GENERIC_CALIBRATE_DELAY !! 1087 config CEVT_SB1250
325 def_bool y !! 1088 bool
326 1089
327 config GENERIC_CSUM !! 1090 config CEVT_TXX9
328 def_bool y !! 1091 bool
329 1092
330 config GENERIC_HWEIGHT !! 1093 config CSRC_BCM1480
331 def_bool y !! 1094 bool
332 1095
333 config FIX_EARLYCON_MEM !! 1096 config CSRC_IOASIC
334 def_bool MMU !! 1097 bool
335 1098
336 config ILLEGAL_POINTER_VALUE !! 1099 config CSRC_R4K
337 hex !! 1100 bool
338 default 0 if 32BIT <<
339 default 0xdead000000000000 if 64BIT <<
340 1101
341 config PGTABLE_LEVELS !! 1102 config CSRC_SB1250
342 int !! 1103 bool
343 default 5 if 64BIT <<
344 default 2 <<
345 1104
346 config LOCKDEP_SUPPORT !! 1105 config MIPS_CLOCK_VSYSCALL
347 def_bool y !! 1106 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
348 1107
349 config RISCV_DMA_NONCOHERENT !! 1108 config GPIO_TXX9
>> 1109 select GPIOLIB
350 bool 1110 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 1111
357 config RISCV_NONSTANDARD_CACHE_OPS !! 1112 config FW_CFE
358 bool 1113 bool
359 help <<
360 This enables function pointer suppor <<
361 systems to handle cache management. <<
362 1114
363 config AS_HAS_INSN !! 1115 config ARCH_DMA_ADDR_T_64BIT
364 def_bool $(as-instr,.insn r 51$(comma) !! 1116 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
365 1117
366 config AS_HAS_OPTION_ARCH !! 1118 config ARCH_SUPPORTS_UPROBES
367 # https://github.com/llvm/llvm-project !! 1119 bool
368 def_bool y <<
369 depends on $(as-instr, .option arch$(c <<
370 1120
371 source "arch/riscv/Kconfig.socs" !! 1121 config DMA_MAYBE_COHERENT
372 source "arch/riscv/Kconfig.errata" !! 1122 select DMA_NONCOHERENT
>> 1123 bool
373 1124
374 menu "Platform type" !! 1125 config DMA_PERDEV_COHERENT
>> 1126 bool
>> 1127 select DMA_MAYBE_COHERENT
375 1128
376 config NONPORTABLE !! 1129 config DMA_COHERENT
377 bool "Allow configurations that result !! 1130 bool
378 help <<
379 RISC-V kernel binaries are compatibl <<
380 whenever possible, but there are som <<
381 satisfied by configurations that res <<
382 not portable between systems. <<
383 1131
384 Selecting N does not guarantee kerne !! 1132 config DMA_NONCOHERENT
385 systems. Selecting any of the optio !! 1133 bool
386 result in kernel binaries that are u !! 1134 select NEED_DMA_MAP_STATE
387 systems. <<
388 1135
389 If unsure, say N. !! 1136 config NEED_DMA_MAP_STATE
>> 1137 bool
390 1138
391 choice !! 1139 config SYS_HAS_EARLY_PRINTK
392 prompt "Base ISA" !! 1140 bool
393 default ARCH_RV64I <<
394 help <<
395 This selects the base ISA that this <<
396 the target platform. <<
397 1141
398 config ARCH_RV32I !! 1142 config SYS_SUPPORTS_HOTPLUG_CPU
399 bool "RV32I" !! 1143 bool
400 depends on NONPORTABLE <<
401 select 32BIT <<
402 select GENERIC_LIB_ASHLDI3 <<
403 select GENERIC_LIB_ASHRDI3 <<
404 select GENERIC_LIB_LSHRDI3 <<
405 select GENERIC_LIB_UCMPDI2 <<
406 <<
407 config ARCH_RV64I <<
408 bool "RV64I" <<
409 select 64BIT <<
410 select ARCH_SUPPORTS_INT128 if CC_HAS_ <<
411 select SWIOTLB if MMU <<
412 1144
413 endchoice !! 1145 config MIPS_BONITO64
>> 1146 bool
414 1147
415 # We must be able to map all physical memory i !! 1148 config MIPS_MSC
416 # is still a bit more efficient when generatin !! 1149 bool
417 # such that it can only map 2GiB of memory. !! 1150
>> 1151 config MIPS_NILE4
>> 1152 bool
>> 1153
>> 1154 config SYNC_R4K
>> 1155 bool
>> 1156
>> 1157 config MIPS_MACHINE
>> 1158 def_bool n
>> 1159
>> 1160 config NO_IOPORT_MAP
>> 1161 def_bool n
>> 1162
>> 1163 config GENERIC_CSUM
>> 1164 bool
>> 1165
>> 1166 config GENERIC_ISA_DMA
>> 1167 bool
>> 1168 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
>> 1169 select ISA_DMA_API
>> 1170
>> 1171 config GENERIC_ISA_DMA_SUPPORT_BROKEN
>> 1172 bool
>> 1173 select GENERIC_ISA_DMA
>> 1174
>> 1175 config ISA_DMA_API
>> 1176 bool
>> 1177
>> 1178 config HOLES_IN_ZONE
>> 1179 bool
>> 1180
>> 1181 config SYS_SUPPORTS_RELOCATABLE
>> 1182 bool
>> 1183 help
>> 1184 Selected if the platform supports relocating the kernel.
>> 1185 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
>> 1186 to allow access to command line and entropy sources.
>> 1187
>> 1188 #
>> 1189 # Endianness selection. Sufficiently obscure so many users don't know what to
>> 1190 # answer,so we try hard to limit the available choices. Also the use of a
>> 1191 # choice statement should be more obvious to the user.
>> 1192 #
418 choice 1193 choice
419 prompt "Kernel Code Model" !! 1194 prompt "Endianness selection"
420 default CMODEL_MEDLOW if 32BIT !! 1195 help
421 default CMODEL_MEDANY if 64BIT !! 1196 Some MIPS machines can be configured for either little or big endian
422 !! 1197 byte order. These modes require different kernels and a different
423 config CMODEL_MEDLOW !! 1198 Linux distribution. In general there is one preferred byteorder for a
424 bool "medium low code model" !! 1199 particular system but some systems are just as commonly used in the
425 config CMODEL_MEDANY !! 1200 one or the other endianness.
426 bool "medium any code model" !! 1201
>> 1202 config CPU_BIG_ENDIAN
>> 1203 bool "Big endian"
>> 1204 depends on SYS_SUPPORTS_BIG_ENDIAN
>> 1205
>> 1206 config CPU_LITTLE_ENDIAN
>> 1207 bool "Little endian"
>> 1208 depends on SYS_SUPPORTS_LITTLE_ENDIAN
>> 1209
427 endchoice 1210 endchoice
428 1211
429 config MODULE_SECTIONS !! 1212 config EXPORT_UASM
430 bool 1213 bool
431 select HAVE_MOD_ARCH_SPECIFIC <<
432 1214
433 config SMP !! 1215 config SYS_SUPPORTS_APM_EMULATION
434 bool "Symmetric Multi-Processing" !! 1216 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 1217
444 If you don't know what to do here, s !! 1218 config SYS_SUPPORTS_BIG_ENDIAN
>> 1219 bool
445 1220
446 config SCHED_MC !! 1221 config SYS_SUPPORTS_LITTLE_ENDIAN
447 bool "Multi-core scheduler support" !! 1222 bool
448 depends on SMP <<
449 help <<
450 Multi-core scheduler support improve <<
451 making when dealing with multi-core <<
452 increased overhead in some places. I <<
453 1223
454 config NR_CPUS !! 1224 config SYS_SUPPORTS_HUGETLBFS
455 int "Maximum number of CPUs (2-512)" !! 1225 bool
456 depends on SMP !! 1226 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
457 range 2 512 if !RISCV_SBI_V01 !! 1227 default y
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 1228
463 config HOTPLUG_CPU !! 1229 config MIPS_HUGE_TLB_SUPPORT
464 bool "Support for hot-pluggable CPUs" !! 1230 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
465 depends on SMP !! 1231
466 select GENERIC_IRQ_MIGRATION !! 1232 config IRQ_CPU_RM7K
467 help !! 1233 bool
468 1234
469 Say Y here to experiment with turnin !! 1235 config IRQ_MSP_SLP
470 can be controlled through /sys/devic !! 1236 bool
471 1237
472 Say N if you want to disable CPU hot !! 1238 config IRQ_MSP_CIC
>> 1239 bool
473 1240
474 choice !! 1241 config IRQ_TXX9
475 prompt "CPU Tuning" !! 1242 bool
476 default TUNE_GENERIC <<
477 1243
478 config TUNE_GENERIC !! 1244 config IRQ_GT641XX
479 bool "generic" !! 1245 bool
480 1246
481 endchoice !! 1247 config PCI_GT64XXX_PCI0
>> 1248 bool
482 1249
483 # Common NUMA Features !! 1250 config NO_EXCEPT_FILL
484 config NUMA !! 1251 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 1252
497 The kernel will try to allocate memo !! 1253 config SOC_EMMA2RH
498 local memory of the CPU and add some !! 1254 bool
>> 1255 select CEVT_R4K
>> 1256 select CSRC_R4K
>> 1257 select DMA_NONCOHERENT
>> 1258 select IRQ_MIPS_CPU
>> 1259 select SWAP_IO_SPACE
>> 1260 select SYS_HAS_CPU_R5500
>> 1261 select SYS_SUPPORTS_32BIT_KERNEL
>> 1262 select SYS_SUPPORTS_64BIT_KERNEL
>> 1263 select SYS_SUPPORTS_BIG_ENDIAN
499 1264
500 config NODES_SHIFT !! 1265 config SOC_PNX833X
501 int "Maximum NUMA Nodes (as a power of !! 1266 bool
502 range 1 10 !! 1267 select CEVT_R4K
503 default "2" !! 1268 select CSRC_R4K
504 depends on NUMA !! 1269 select IRQ_MIPS_CPU
505 help !! 1270 select DMA_NONCOHERENT
506 Specify the maximum number of NUMA N !! 1271 select SYS_HAS_CPU_MIPS32_R2
507 system. Increases memory reserved t !! 1272 select SYS_SUPPORTS_32BIT_KERNEL
>> 1273 select SYS_SUPPORTS_LITTLE_ENDIAN
>> 1274 select SYS_SUPPORTS_BIG_ENDIAN
>> 1275 select SYS_SUPPORTS_MIPS16
>> 1276 select CPU_MIPSR2_IRQ_VI
508 1277
509 config RISCV_ALTERNATIVE !! 1278 config SOC_PNX8335
510 bool 1279 bool
511 depends on !XIP_KERNEL !! 1280 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 1281
518 config RISCV_ALTERNATIVE_EARLY !! 1282 config MIPS_SPRAM
>> 1283 bool
>> 1284
>> 1285 config SWAP_IO_SPACE
>> 1286 bool
>> 1287
>> 1288 config SGI_HAS_INDYDOG
519 bool 1289 bool
520 depends on RISCV_ALTERNATIVE <<
521 help <<
522 Allows early patching of the kernel <<
523 1290
524 config RISCV_ISA_C !! 1291 config SGI_HAS_HAL2
525 bool "Emit compressed instructions whe !! 1292 bool
>> 1293
>> 1294 config SGI_HAS_SEEQ
>> 1295 bool
>> 1296
>> 1297 config SGI_HAS_WD93
>> 1298 bool
>> 1299
>> 1300 config SGI_HAS_ZILOG
>> 1301 bool
>> 1302
>> 1303 config SGI_HAS_I8042
>> 1304 bool
>> 1305
>> 1306 config DEFAULT_SGI_PARTITION
>> 1307 bool
>> 1308
>> 1309 config FW_ARC32
>> 1310 bool
>> 1311
>> 1312 config FW_SNIPROM
>> 1313 bool
>> 1314
>> 1315 config BOOT_ELF32
>> 1316 bool
>> 1317
>> 1318 config MIPS_L1_CACHE_SHIFT_4
>> 1319 bool
>> 1320
>> 1321 config MIPS_L1_CACHE_SHIFT_5
>> 1322 bool
>> 1323
>> 1324 config MIPS_L1_CACHE_SHIFT_6
>> 1325 bool
>> 1326
>> 1327 config MIPS_L1_CACHE_SHIFT_7
>> 1328 bool
>> 1329
>> 1330 config MIPS_L1_CACHE_SHIFT
>> 1331 int
>> 1332 default "7" if MIPS_L1_CACHE_SHIFT_7
>> 1333 default "6" if MIPS_L1_CACHE_SHIFT_6
>> 1334 default "5" if MIPS_L1_CACHE_SHIFT_5
>> 1335 default "4" if MIPS_L1_CACHE_SHIFT_4
>> 1336 default "5"
>> 1337
>> 1338 config HAVE_STD_PC_SERIAL_PORT
>> 1339 bool
>> 1340
>> 1341 config ARC_CONSOLE
>> 1342 bool "ARC console support"
>> 1343 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
>> 1344
>> 1345 config ARC_MEMORY
>> 1346 bool
>> 1347 depends on MACH_JAZZ || SNI_RM || SGI_IP32
526 default y 1348 default y
>> 1349
>> 1350 config ARC_PROMLIB
>> 1351 bool
>> 1352 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
>> 1353 default y
>> 1354
>> 1355 config FW_ARC64
>> 1356 bool
>> 1357
>> 1358 config BOOT_ELF64
>> 1359 bool
>> 1360
>> 1361 menu "CPU selection"
>> 1362
>> 1363 choice
>> 1364 prompt "CPU type"
>> 1365 default CPU_R4X00
>> 1366
>> 1367 config CPU_LOONGSON3
>> 1368 bool "Loongson 3 CPU"
>> 1369 depends on SYS_HAS_CPU_LOONGSON3
>> 1370 select CPU_SUPPORTS_64BIT_KERNEL
>> 1371 select CPU_SUPPORTS_HIGHMEM
>> 1372 select CPU_SUPPORTS_HUGEPAGES
>> 1373 select WEAK_ORDERING
>> 1374 select WEAK_REORDERING_BEYOND_LLSC
>> 1375 select MIPS_PGD_C0_CONTEXT
>> 1376 select MIPS_L1_CACHE_SHIFT_6
>> 1377 select GPIOLIB
527 help 1378 help
528 Adds "C" to the ISA subsets that the !! 1379 The Loongson 3 processor implements the MIPS64R2 instruction
529 when building Linux, which results i !! 1380 set with many extensions.
530 Linux binary. <<
531 1381
532 If you don't know what to do here, s !! 1382 config LOONGSON3_ENHANCEMENT
>> 1383 bool "New Loongson 3 CPU Enhancements"
>> 1384 default n
>> 1385 select CPU_MIPSR2
>> 1386 select CPU_HAS_PREFETCH
>> 1387 depends on CPU_LOONGSON3
>> 1388 help
>> 1389 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
>> 1390 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
>> 1391 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
>> 1392 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
>> 1393 Fast TLB refill support, etc.
>> 1394
>> 1395 This option enable those enhancements which are not probed at run
>> 1396 time. If you want a generic kernel to run on all Loongson 3 machines,
>> 1397 please say 'N' here. If you want a high-performance kernel to run on
>> 1398 new Loongson 3 machines only, please say 'Y' here.
>> 1399
>> 1400 config CPU_LOONGSON2E
>> 1401 bool "Loongson 2E"
>> 1402 depends on SYS_HAS_CPU_LOONGSON2E
>> 1403 select CPU_LOONGSON2
>> 1404 help
>> 1405 The Loongson 2E processor implements the MIPS III instruction set
>> 1406 with many extensions.
>> 1407
>> 1408 It has an internal FPGA northbridge, which is compatible to
>> 1409 bonito64.
>> 1410
>> 1411 config CPU_LOONGSON2F
>> 1412 bool "Loongson 2F"
>> 1413 depends on SYS_HAS_CPU_LOONGSON2F
>> 1414 select CPU_LOONGSON2
>> 1415 select GPIOLIB
>> 1416 help
>> 1417 The Loongson 2F processor implements the MIPS III instruction set
>> 1418 with many extensions.
>> 1419
>> 1420 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
>> 1421 have a similar programming interface with FPGA northbridge used in
>> 1422 Loongson2E.
>> 1423
>> 1424 config CPU_LOONGSON1B
>> 1425 bool "Loongson 1B"
>> 1426 depends on SYS_HAS_CPU_LOONGSON1B
>> 1427 select CPU_LOONGSON1
>> 1428 select LEDS_GPIO_REGISTER
>> 1429 help
>> 1430 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
>> 1431 release 2 instruction set.
>> 1432
>> 1433 config CPU_LOONGSON1C
>> 1434 bool "Loongson 1C"
>> 1435 depends on SYS_HAS_CPU_LOONGSON1C
>> 1436 select CPU_LOONGSON1
>> 1437 select LEDS_GPIO_REGISTER
>> 1438 help
>> 1439 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
>> 1440 release 2 instruction set.
>> 1441
>> 1442 config CPU_MIPS32_R1
>> 1443 bool "MIPS32 Release 1"
>> 1444 depends on SYS_HAS_CPU_MIPS32_R1
>> 1445 select CPU_HAS_PREFETCH
>> 1446 select CPU_SUPPORTS_32BIT_KERNEL
>> 1447 select CPU_SUPPORTS_HIGHMEM
>> 1448 help
>> 1449 Choose this option to build a kernel for release 1 or later of the
>> 1450 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1451 MIPS processor are based on a MIPS32 processor. If you know the
>> 1452 specific type of processor in your system, choose those that one
>> 1453 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1454 Release 2 of the MIPS32 architecture is available since several
>> 1455 years so chances are you even have a MIPS32 Release 2 processor
>> 1456 in which case you should choose CPU_MIPS32_R2 instead for better
>> 1457 performance.
>> 1458
>> 1459 config CPU_MIPS32_R2
>> 1460 bool "MIPS32 Release 2"
>> 1461 depends on SYS_HAS_CPU_MIPS32_R2
>> 1462 select CPU_HAS_PREFETCH
>> 1463 select CPU_SUPPORTS_32BIT_KERNEL
>> 1464 select CPU_SUPPORTS_HIGHMEM
>> 1465 select CPU_SUPPORTS_MSA
>> 1466 select HAVE_KVM
>> 1467 help
>> 1468 Choose this option to build a kernel for release 2 or later of the
>> 1469 MIPS32 architecture. Most modern embedded systems with a 32-bit
>> 1470 MIPS processor are based on a MIPS32 processor. If you know the
>> 1471 specific type of processor in your system, choose those that one
>> 1472 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
>> 1473
>> 1474 config CPU_MIPS32_R6
>> 1475 bool "MIPS32 Release 6"
>> 1476 depends on SYS_HAS_CPU_MIPS32_R6
>> 1477 select CPU_HAS_PREFETCH
>> 1478 select CPU_SUPPORTS_32BIT_KERNEL
>> 1479 select CPU_SUPPORTS_HIGHMEM
>> 1480 select CPU_SUPPORTS_MSA
>> 1481 select GENERIC_CSUM
>> 1482 select HAVE_KVM
>> 1483 select MIPS_O32_FP64_SUPPORT
>> 1484 help
>> 1485 Choose this option to build a kernel for release 6 or later of the
>> 1486 MIPS32 architecture. New MIPS processors, starting with the Warrior
>> 1487 family, are based on a MIPS32r6 processor. If you own an older
>> 1488 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
>> 1489
>> 1490 config CPU_MIPS64_R1
>> 1491 bool "MIPS64 Release 1"
>> 1492 depends on SYS_HAS_CPU_MIPS64_R1
>> 1493 select CPU_HAS_PREFETCH
>> 1494 select CPU_SUPPORTS_32BIT_KERNEL
>> 1495 select CPU_SUPPORTS_64BIT_KERNEL
>> 1496 select CPU_SUPPORTS_HIGHMEM
>> 1497 select CPU_SUPPORTS_HUGEPAGES
>> 1498 help
>> 1499 Choose this option to build a kernel for release 1 or later of the
>> 1500 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1501 MIPS processor are based on a MIPS64 processor. If you know the
>> 1502 specific type of processor in your system, choose those that one
>> 1503 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1504 Release 2 of the MIPS64 architecture is available since several
>> 1505 years so chances are you even have a MIPS64 Release 2 processor
>> 1506 in which case you should choose CPU_MIPS64_R2 instead for better
>> 1507 performance.
>> 1508
>> 1509 config CPU_MIPS64_R2
>> 1510 bool "MIPS64 Release 2"
>> 1511 depends on SYS_HAS_CPU_MIPS64_R2
>> 1512 select CPU_HAS_PREFETCH
>> 1513 select CPU_SUPPORTS_32BIT_KERNEL
>> 1514 select CPU_SUPPORTS_64BIT_KERNEL
>> 1515 select CPU_SUPPORTS_HIGHMEM
>> 1516 select CPU_SUPPORTS_HUGEPAGES
>> 1517 select CPU_SUPPORTS_MSA
>> 1518 select HAVE_KVM
>> 1519 help
>> 1520 Choose this option to build a kernel for release 2 or later of the
>> 1521 MIPS64 architecture. Many modern embedded systems with a 64-bit
>> 1522 MIPS processor are based on a MIPS64 processor. If you know the
>> 1523 specific type of processor in your system, choose those that one
>> 1524 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
>> 1525
>> 1526 config CPU_MIPS64_R6
>> 1527 bool "MIPS64 Release 6"
>> 1528 depends on SYS_HAS_CPU_MIPS64_R6
>> 1529 select CPU_HAS_PREFETCH
>> 1530 select CPU_SUPPORTS_32BIT_KERNEL
>> 1531 select CPU_SUPPORTS_64BIT_KERNEL
>> 1532 select CPU_SUPPORTS_HIGHMEM
>> 1533 select CPU_SUPPORTS_MSA
>> 1534 select GENERIC_CSUM
>> 1535 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
>> 1536 select HAVE_KVM
>> 1537 help
>> 1538 Choose this option to build a kernel for release 6 or later of the
>> 1539 MIPS64 architecture. New MIPS processors, starting with the Warrior
>> 1540 family, are based on a MIPS64r6 processor. If you own an older
>> 1541 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
>> 1542
>> 1543 config CPU_R3000
>> 1544 bool "R3000"
>> 1545 depends on SYS_HAS_CPU_R3000
>> 1546 select CPU_HAS_WB
>> 1547 select CPU_SUPPORTS_32BIT_KERNEL
>> 1548 select CPU_SUPPORTS_HIGHMEM
>> 1549 help
>> 1550 Please make sure to pick the right CPU type. Linux/MIPS is not
>> 1551 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
>> 1552 *not* work on R4000 machines and vice versa. However, since most
>> 1553 of the supported machines have an R4000 (or similar) CPU, R4x00
>> 1554 might be a safe bet. If the resulting kernel does not work,
>> 1555 try to recompile with R3000.
>> 1556
>> 1557 config CPU_TX39XX
>> 1558 bool "R39XX"
>> 1559 depends on SYS_HAS_CPU_TX39XX
>> 1560 select CPU_SUPPORTS_32BIT_KERNEL
>> 1561
>> 1562 config CPU_VR41XX
>> 1563 bool "R41xx"
>> 1564 depends on SYS_HAS_CPU_VR41XX
>> 1565 select CPU_SUPPORTS_32BIT_KERNEL
>> 1566 select CPU_SUPPORTS_64BIT_KERNEL
>> 1567 help
>> 1568 The options selects support for the NEC VR4100 series of processors.
>> 1569 Only choose this option if you have one of these processors as a
>> 1570 kernel built with this option will not run on any other type of
>> 1571 processor or vice versa.
>> 1572
>> 1573 config CPU_R4300
>> 1574 bool "R4300"
>> 1575 depends on SYS_HAS_CPU_R4300
>> 1576 select CPU_SUPPORTS_32BIT_KERNEL
>> 1577 select CPU_SUPPORTS_64BIT_KERNEL
>> 1578 help
>> 1579 MIPS Technologies R4300-series processors.
>> 1580
>> 1581 config CPU_R4X00
>> 1582 bool "R4x00"
>> 1583 depends on SYS_HAS_CPU_R4X00
>> 1584 select CPU_SUPPORTS_32BIT_KERNEL
>> 1585 select CPU_SUPPORTS_64BIT_KERNEL
>> 1586 select CPU_SUPPORTS_HUGEPAGES
>> 1587 help
>> 1588 MIPS Technologies R4000-series processors other than 4300, including
>> 1589 the R4000, R4400, R4600, and 4700.
>> 1590
>> 1591 config CPU_TX49XX
>> 1592 bool "R49XX"
>> 1593 depends on SYS_HAS_CPU_TX49XX
>> 1594 select CPU_HAS_PREFETCH
>> 1595 select CPU_SUPPORTS_32BIT_KERNEL
>> 1596 select CPU_SUPPORTS_64BIT_KERNEL
>> 1597 select CPU_SUPPORTS_HUGEPAGES
>> 1598
>> 1599 config CPU_R5000
>> 1600 bool "R5000"
>> 1601 depends on SYS_HAS_CPU_R5000
>> 1602 select CPU_SUPPORTS_32BIT_KERNEL
>> 1603 select CPU_SUPPORTS_64BIT_KERNEL
>> 1604 select CPU_SUPPORTS_HUGEPAGES
>> 1605 help
>> 1606 MIPS Technologies R5000-series processors other than the Nevada.
>> 1607
>> 1608 config CPU_R5432
>> 1609 bool "R5432"
>> 1610 depends on SYS_HAS_CPU_R5432
>> 1611 select CPU_SUPPORTS_32BIT_KERNEL
>> 1612 select CPU_SUPPORTS_64BIT_KERNEL
>> 1613 select CPU_SUPPORTS_HUGEPAGES
>> 1614
>> 1615 config CPU_R5500
>> 1616 bool "R5500"
>> 1617 depends on SYS_HAS_CPU_R5500
>> 1618 select CPU_SUPPORTS_32BIT_KERNEL
>> 1619 select CPU_SUPPORTS_64BIT_KERNEL
>> 1620 select CPU_SUPPORTS_HUGEPAGES
>> 1621 help
>> 1622 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
>> 1623 instruction set.
>> 1624
>> 1625 config CPU_R6000
>> 1626 bool "R6000"
>> 1627 depends on SYS_HAS_CPU_R6000
>> 1628 select CPU_SUPPORTS_32BIT_KERNEL
>> 1629 help
>> 1630 MIPS Technologies R6000 and R6000A series processors. Note these
>> 1631 processors are extremely rare and the support for them is incomplete.
>> 1632
>> 1633 config CPU_NEVADA
>> 1634 bool "RM52xx"
>> 1635 depends on SYS_HAS_CPU_NEVADA
>> 1636 select CPU_SUPPORTS_32BIT_KERNEL
>> 1637 select CPU_SUPPORTS_64BIT_KERNEL
>> 1638 select CPU_SUPPORTS_HUGEPAGES
>> 1639 help
>> 1640 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
>> 1641
>> 1642 config CPU_R8000
>> 1643 bool "R8000"
>> 1644 depends on SYS_HAS_CPU_R8000
>> 1645 select CPU_HAS_PREFETCH
>> 1646 select CPU_SUPPORTS_64BIT_KERNEL
>> 1647 help
>> 1648 MIPS Technologies R8000 processors. Note these processors are
>> 1649 uncommon and the support for them is incomplete.
>> 1650
>> 1651 config CPU_R10000
>> 1652 bool "R10000"
>> 1653 depends on SYS_HAS_CPU_R10000
>> 1654 select CPU_HAS_PREFETCH
>> 1655 select CPU_SUPPORTS_32BIT_KERNEL
>> 1656 select CPU_SUPPORTS_64BIT_KERNEL
>> 1657 select CPU_SUPPORTS_HIGHMEM
>> 1658 select CPU_SUPPORTS_HUGEPAGES
>> 1659 help
>> 1660 MIPS Technologies R10000-series processors.
>> 1661
>> 1662 config CPU_RM7000
>> 1663 bool "RM7000"
>> 1664 depends on SYS_HAS_CPU_RM7000
>> 1665 select CPU_HAS_PREFETCH
>> 1666 select CPU_SUPPORTS_32BIT_KERNEL
>> 1667 select CPU_SUPPORTS_64BIT_KERNEL
>> 1668 select CPU_SUPPORTS_HIGHMEM
>> 1669 select CPU_SUPPORTS_HUGEPAGES
>> 1670
>> 1671 config CPU_SB1
>> 1672 bool "SB1"
>> 1673 depends on SYS_HAS_CPU_SB1
>> 1674 select CPU_SUPPORTS_32BIT_KERNEL
>> 1675 select CPU_SUPPORTS_64BIT_KERNEL
>> 1676 select CPU_SUPPORTS_HIGHMEM
>> 1677 select CPU_SUPPORTS_HUGEPAGES
>> 1678 select WEAK_ORDERING
>> 1679
>> 1680 config CPU_CAVIUM_OCTEON
>> 1681 bool "Cavium Octeon processor"
>> 1682 depends on SYS_HAS_CPU_CAVIUM_OCTEON
>> 1683 select CPU_HAS_PREFETCH
>> 1684 select CPU_SUPPORTS_64BIT_KERNEL
>> 1685 select WEAK_ORDERING
>> 1686 select CPU_SUPPORTS_HIGHMEM
>> 1687 select CPU_SUPPORTS_HUGEPAGES
>> 1688 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1689 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
>> 1690 select MIPS_L1_CACHE_SHIFT_7
>> 1691 help
>> 1692 The Cavium Octeon processor is a highly integrated chip containing
>> 1693 many ethernet hardware widgets for networking tasks. The processor
>> 1694 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
>> 1695 Full details can be found at http://www.caviumnetworks.com.
>> 1696
>> 1697 config CPU_BMIPS
>> 1698 bool "Broadcom BMIPS"
>> 1699 depends on SYS_HAS_CPU_BMIPS
>> 1700 select CPU_MIPS32
>> 1701 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
>> 1702 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
>> 1703 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
>> 1704 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
>> 1705 select CPU_SUPPORTS_32BIT_KERNEL
>> 1706 select DMA_NONCOHERENT
>> 1707 select IRQ_MIPS_CPU
>> 1708 select SWAP_IO_SPACE
>> 1709 select WEAK_ORDERING
>> 1710 select CPU_SUPPORTS_HIGHMEM
>> 1711 select CPU_HAS_PREFETCH
>> 1712 select CPU_SUPPORTS_CPUFREQ
>> 1713 select MIPS_EXTERNAL_TIMER
>> 1714 help
>> 1715 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
>> 1716
>> 1717 config CPU_XLR
>> 1718 bool "Netlogic XLR SoC"
>> 1719 depends on SYS_HAS_CPU_XLR
>> 1720 select CPU_SUPPORTS_32BIT_KERNEL
>> 1721 select CPU_SUPPORTS_64BIT_KERNEL
>> 1722 select CPU_SUPPORTS_HIGHMEM
>> 1723 select CPU_SUPPORTS_HUGEPAGES
>> 1724 select WEAK_ORDERING
>> 1725 select WEAK_REORDERING_BEYOND_LLSC
>> 1726 help
>> 1727 Netlogic Microsystems XLR/XLS processors.
>> 1728
>> 1729 config CPU_XLP
>> 1730 bool "Netlogic XLP SoC"
>> 1731 depends on SYS_HAS_CPU_XLP
>> 1732 select CPU_SUPPORTS_32BIT_KERNEL
>> 1733 select CPU_SUPPORTS_64BIT_KERNEL
>> 1734 select CPU_SUPPORTS_HIGHMEM
>> 1735 select WEAK_ORDERING
>> 1736 select WEAK_REORDERING_BEYOND_LLSC
>> 1737 select CPU_HAS_PREFETCH
>> 1738 select CPU_MIPSR2
>> 1739 select CPU_SUPPORTS_HUGEPAGES
>> 1740 select MIPS_ASID_BITS_VARIABLE
>> 1741 help
>> 1742 Netlogic Microsystems XLP processors.
>> 1743 endchoice
533 1744
534 config RISCV_ISA_SVNAPOT !! 1745 config CPU_MIPS32_3_5_FEATURES
535 bool "Svnapot extension support for su !! 1746 bool "MIPS32 Release 3.5 Features"
536 depends on 64BIT && MMU !! 1747 depends on SYS_HAS_CPU_MIPS32_R3_5
537 depends on RISCV_ALTERNATIVE !! 1748 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
538 default y !! 1749 help
>> 1750 Choose this option to build a kernel for release 2 or later of the
>> 1751 MIPS32 architecture including features from the 3.5 release such as
>> 1752 support for Enhanced Virtual Addressing (EVA).
>> 1753
>> 1754 config CPU_MIPS32_3_5_EVA
>> 1755 bool "Enhanced Virtual Addressing (EVA)"
>> 1756 depends on CPU_MIPS32_3_5_FEATURES
>> 1757 select EVA
>> 1758 default y
>> 1759 help
>> 1760 Choose this option if you want to enable the Enhanced Virtual
>> 1761 Addressing (EVA) on your MIPS32 core (such as proAptiv).
>> 1762 One of its primary benefits is an increase in the maximum size
>> 1763 of lowmem (up to 3GB). If unsure, say 'N' here.
>> 1764
>> 1765 config CPU_MIPS32_R5_FEATURES
>> 1766 bool "MIPS32 Release 5 Features"
>> 1767 depends on SYS_HAS_CPU_MIPS32_R5
>> 1768 depends on CPU_MIPS32_R2
>> 1769 help
>> 1770 Choose this option to build a kernel for release 2 or later of the
>> 1771 MIPS32 architecture including features from release 5 such as
>> 1772 support for Extended Physical Addressing (XPA).
>> 1773
>> 1774 config CPU_MIPS32_R5_XPA
>> 1775 bool "Extended Physical Addressing (XPA)"
>> 1776 depends on CPU_MIPS32_R5_FEATURES
>> 1777 depends on !EVA
>> 1778 depends on !PAGE_SIZE_4KB
>> 1779 depends on SYS_SUPPORTS_HIGHMEM
>> 1780 select XPA
>> 1781 select HIGHMEM
>> 1782 select ARCH_PHYS_ADDR_T_64BIT
>> 1783 default n
539 help 1784 help
540 Allow kernel to detect the Svnapot I !! 1785 Choose this option if you want to enable the Extended Physical
541 time and enable its usage. !! 1786 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
>> 1787 benefit is to increase physical addressing equal to or greater
>> 1788 than 40 bits. Note that this has the side effect of turning on
>> 1789 64-bit addressing which in turn makes the PTEs 64-bit in size.
>> 1790 If unsure, say 'N' here.
542 1791
543 The Svnapot extension is used to mar !! 1792 if CPU_LOONGSON2F
544 of contiguous virtual-to-physical tr !! 1793 config CPU_NOP_WORKAROUNDS
545 aligned power-of-2 (NAPOT) granulari !! 1794 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 1795
551 If you don't know what to do here, s !! 1796 config CPU_JUMP_WORKAROUNDS
>> 1797 bool
552 1798
553 config RISCV_ISA_SVPBMT !! 1799 config CPU_LOONGSON2F_WORKAROUNDS
554 bool "Svpbmt extension support for sup !! 1800 bool "Loongson 2F Workarounds"
555 depends on 64BIT && MMU <<
556 depends on RISCV_ALTERNATIVE <<
557 default y 1801 default y
>> 1802 select CPU_NOP_WORKAROUNDS
>> 1803 select CPU_JUMP_WORKAROUNDS
558 help 1804 help
559 Adds support to dynamically detect !! 1805 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
560 ISA-extension (Supervisor-mode: pag !! 1806 require workarounds. Without workarounds the system may hang
561 enable its usage. !! 1807 unexpectedly. For more information please refer to the gas
>> 1808 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
>> 1809
>> 1810 Loongson 2F03 and later have fixed these issues and no workarounds
>> 1811 are needed. The workarounds have no significant side effect on them
>> 1812 but may decrease the performance of the system so this option should
>> 1813 be disabled unless the kernel is intended to be run on 2F01 or 2F02
>> 1814 systems.
562 1815
563 The memory type for a page contains !! 1816 If unsure, please say Y.
564 that indicate the cacheability, ide !! 1817 endif # CPU_LOONGSON2F
565 properties for access to that page. <<
566 1818
567 The Svpbmt extension is only availa !! 1819 config SYS_SUPPORTS_ZBOOT
>> 1820 bool
>> 1821 select HAVE_KERNEL_GZIP
>> 1822 select HAVE_KERNEL_BZIP2
>> 1823 select HAVE_KERNEL_LZ4
>> 1824 select HAVE_KERNEL_LZMA
>> 1825 select HAVE_KERNEL_LZO
>> 1826 select HAVE_KERNEL_XZ
568 1827
569 If you don't know what to do here, !! 1828 config SYS_SUPPORTS_ZBOOT_UART16550
>> 1829 bool
>> 1830 select SYS_SUPPORTS_ZBOOT
570 1831
571 config TOOLCHAIN_HAS_V !! 1832 config SYS_SUPPORTS_ZBOOT_UART_PROM
572 bool 1833 bool
573 default y !! 1834 select SYS_SUPPORTS_ZBOOT
574 depends on !64BIT || $(cc-option,-mabi !! 1835
575 depends on !32BIT || $(cc-option,-mabi !! 1836 config CPU_LOONGSON2
576 depends on LLD_VERSION >= 140000 || LD !! 1837 bool
577 depends on AS_HAS_OPTION_ARCH !! 1838 select CPU_SUPPORTS_32BIT_KERNEL
>> 1839 select CPU_SUPPORTS_64BIT_KERNEL
>> 1840 select CPU_SUPPORTS_HIGHMEM
>> 1841 select CPU_SUPPORTS_HUGEPAGES
>> 1842
>> 1843 config CPU_LOONGSON1
>> 1844 bool
>> 1845 select CPU_MIPS32
>> 1846 select CPU_MIPSR2
>> 1847 select CPU_HAS_PREFETCH
>> 1848 select CPU_SUPPORTS_32BIT_KERNEL
>> 1849 select CPU_SUPPORTS_HIGHMEM
>> 1850 select CPU_SUPPORTS_CPUFREQ
>> 1851
>> 1852 config CPU_BMIPS32_3300
>> 1853 select SMP_UP if SMP
>> 1854 bool
>> 1855
>> 1856 config CPU_BMIPS4350
>> 1857 bool
>> 1858 select SYS_SUPPORTS_SMP
>> 1859 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1860
>> 1861 config CPU_BMIPS4380
>> 1862 bool
>> 1863 select MIPS_L1_CACHE_SHIFT_6
>> 1864 select SYS_SUPPORTS_SMP
>> 1865 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1866 select CPU_HAS_RIXI
>> 1867
>> 1868 config CPU_BMIPS5000
>> 1869 bool
>> 1870 select MIPS_CPU_SCACHE
>> 1871 select MIPS_L1_CACHE_SHIFT_7
>> 1872 select SYS_SUPPORTS_SMP
>> 1873 select SYS_SUPPORTS_HOTPLUG_CPU
>> 1874 select CPU_HAS_RIXI
>> 1875
>> 1876 config SYS_HAS_CPU_LOONGSON3
>> 1877 bool
>> 1878 select CPU_SUPPORTS_CPUFREQ
>> 1879 select CPU_HAS_RIXI
>> 1880
>> 1881 config SYS_HAS_CPU_LOONGSON2E
>> 1882 bool
>> 1883
>> 1884 config SYS_HAS_CPU_LOONGSON2F
>> 1885 bool
>> 1886 select CPU_SUPPORTS_CPUFREQ
>> 1887 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
>> 1888 select CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 1889
>> 1890 config SYS_HAS_CPU_LOONGSON1B
>> 1891 bool
>> 1892
>> 1893 config SYS_HAS_CPU_LOONGSON1C
>> 1894 bool
>> 1895
>> 1896 config SYS_HAS_CPU_MIPS32_R1
>> 1897 bool
>> 1898
>> 1899 config SYS_HAS_CPU_MIPS32_R2
>> 1900 bool
>> 1901
>> 1902 config SYS_HAS_CPU_MIPS32_R3_5
>> 1903 bool
>> 1904
>> 1905 config SYS_HAS_CPU_MIPS32_R5
>> 1906 bool
>> 1907
>> 1908 config SYS_HAS_CPU_MIPS32_R6
>> 1909 bool
>> 1910
>> 1911 config SYS_HAS_CPU_MIPS64_R1
>> 1912 bool
>> 1913
>> 1914 config SYS_HAS_CPU_MIPS64_R2
>> 1915 bool
>> 1916
>> 1917 config SYS_HAS_CPU_MIPS64_R6
>> 1918 bool
>> 1919
>> 1920 config SYS_HAS_CPU_R3000
>> 1921 bool
>> 1922
>> 1923 config SYS_HAS_CPU_TX39XX
>> 1924 bool
>> 1925
>> 1926 config SYS_HAS_CPU_VR41XX
>> 1927 bool
>> 1928
>> 1929 config SYS_HAS_CPU_R4300
>> 1930 bool
>> 1931
>> 1932 config SYS_HAS_CPU_R4X00
>> 1933 bool
>> 1934
>> 1935 config SYS_HAS_CPU_TX49XX
>> 1936 bool
>> 1937
>> 1938 config SYS_HAS_CPU_R5000
>> 1939 bool
>> 1940
>> 1941 config SYS_HAS_CPU_R5432
>> 1942 bool
>> 1943
>> 1944 config SYS_HAS_CPU_R5500
>> 1945 bool
>> 1946
>> 1947 config SYS_HAS_CPU_R6000
>> 1948 bool
>> 1949
>> 1950 config SYS_HAS_CPU_NEVADA
>> 1951 bool
>> 1952
>> 1953 config SYS_HAS_CPU_R8000
>> 1954 bool
>> 1955
>> 1956 config SYS_HAS_CPU_R10000
>> 1957 bool
>> 1958
>> 1959 config SYS_HAS_CPU_RM7000
>> 1960 bool
>> 1961
>> 1962 config SYS_HAS_CPU_SB1
>> 1963 bool
>> 1964
>> 1965 config SYS_HAS_CPU_CAVIUM_OCTEON
>> 1966 bool
>> 1967
>> 1968 config SYS_HAS_CPU_BMIPS
>> 1969 bool
>> 1970
>> 1971 config SYS_HAS_CPU_BMIPS32_3300
>> 1972 bool
>> 1973 select SYS_HAS_CPU_BMIPS
>> 1974
>> 1975 config SYS_HAS_CPU_BMIPS4350
>> 1976 bool
>> 1977 select SYS_HAS_CPU_BMIPS
578 1978
579 config RISCV_ISA_V !! 1979 config SYS_HAS_CPU_BMIPS4380
580 bool "VECTOR extension support" !! 1980 bool
581 depends on TOOLCHAIN_HAS_V !! 1981 select SYS_HAS_CPU_BMIPS
582 depends on FPU !! 1982
583 select DYNAMIC_SIGFRAME !! 1983 config SYS_HAS_CPU_BMIPS5000
>> 1984 bool
>> 1985 select SYS_HAS_CPU_BMIPS
>> 1986
>> 1987 config SYS_HAS_CPU_XLR
>> 1988 bool
>> 1989
>> 1990 config SYS_HAS_CPU_XLP
>> 1991 bool
>> 1992
>> 1993 config MIPS_MALTA_PM
>> 1994 depends on MIPS_MALTA
>> 1995 depends on PCI
>> 1996 bool
584 default y 1997 default y
>> 1998
>> 1999 #
>> 2000 # CPU may reorder R->R, R->W, W->R, W->W
>> 2001 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
>> 2002 #
>> 2003 config WEAK_ORDERING
>> 2004 bool
>> 2005
>> 2006 #
>> 2007 # CPU may reorder reads and writes beyond LL/SC
>> 2008 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
>> 2009 #
>> 2010 config WEAK_REORDERING_BEYOND_LLSC
>> 2011 bool
>> 2012 endmenu
>> 2013
>> 2014 #
>> 2015 # These two indicate any level of the MIPS32 and MIPS64 architecture
>> 2016 #
>> 2017 config CPU_MIPS32
>> 2018 bool
>> 2019 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
>> 2020
>> 2021 config CPU_MIPS64
>> 2022 bool
>> 2023 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
>> 2024
>> 2025 #
>> 2026 # These two indicate the revision of the architecture, either Release 1 or Release 2
>> 2027 #
>> 2028 config CPU_MIPSR1
>> 2029 bool
>> 2030 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
>> 2031
>> 2032 config CPU_MIPSR2
>> 2033 bool
>> 2034 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
>> 2035 select CPU_HAS_RIXI
>> 2036 select MIPS_SPRAM
>> 2037
>> 2038 config CPU_MIPSR6
>> 2039 bool
>> 2040 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
>> 2041 select CPU_HAS_RIXI
>> 2042 select HAVE_ARCH_BITREVERSE
>> 2043 select MIPS_ASID_BITS_VARIABLE
>> 2044 select MIPS_SPRAM
>> 2045
>> 2046 config EVA
>> 2047 bool
>> 2048
>> 2049 config XPA
>> 2050 bool
>> 2051
>> 2052 config SYS_SUPPORTS_32BIT_KERNEL
>> 2053 bool
>> 2054 config SYS_SUPPORTS_64BIT_KERNEL
>> 2055 bool
>> 2056 config CPU_SUPPORTS_32BIT_KERNEL
>> 2057 bool
>> 2058 config CPU_SUPPORTS_64BIT_KERNEL
>> 2059 bool
>> 2060 config CPU_SUPPORTS_CPUFREQ
>> 2061 bool
>> 2062 config CPU_SUPPORTS_ADDRWINCFG
>> 2063 bool
>> 2064 config CPU_SUPPORTS_HUGEPAGES
>> 2065 bool
>> 2066 config CPU_SUPPORTS_UNCACHED_ACCELERATED
>> 2067 bool
>> 2068 config MIPS_PGD_C0_CONTEXT
>> 2069 bool
>> 2070 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
>> 2071
>> 2072 #
>> 2073 # Set to y for ptrace access to watch registers.
>> 2074 #
>> 2075 config HARDWARE_WATCHPOINTS
>> 2076 bool
>> 2077 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
>> 2078
>> 2079 menu "Kernel type"
>> 2080
>> 2081 choice
>> 2082 prompt "Kernel code model"
585 help 2083 help
586 Say N here if you want to disable al !! 2084 You should only select this option if you have a workload that
587 in the kernel. !! 2085 actually benefits from 64-bit processing or if your machine has
>> 2086 large memory. You will only be presented a single option in this
>> 2087 menu if your system does not support both 32-bit and 64-bit kernels.
588 2088
589 If you don't know what to do here, s !! 2089 config 32BIT
>> 2090 bool "32-bit kernel"
>> 2091 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
>> 2092 select TRAD_SIGNALS
>> 2093 help
>> 2094 Select this option if you want to build a 32-bit kernel.
590 2095
591 config RISCV_ISA_V_DEFAULT_ENABLE !! 2096 config 64BIT
592 bool "Enable userspace Vector by defau !! 2097 bool "64-bit kernel"
593 depends on RISCV_ISA_V !! 2098 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
594 default y <<
595 help 2099 help
596 Say Y here if you want to enable Vec !! 2100 Select this option if you want to build a 64-bit kernel.
597 Otherwise, userspace has to make exp <<
598 Vector, or enable it via the sysctl <<
599 2101
600 If you don't know what to do here, s !! 2102 endchoice
>> 2103
>> 2104 config KVM_GUEST
>> 2105 bool "KVM Guest Kernel"
>> 2106 depends on BROKEN_ON_SMP
>> 2107 help
>> 2108 Select this option if building a guest kernel for KVM (Trap & Emulate)
>> 2109 mode.
>> 2110
>> 2111 config KVM_GUEST_TIMER_FREQ
>> 2112 int "Count/Compare Timer Frequency (MHz)"
>> 2113 depends on KVM_GUEST
>> 2114 default 100
>> 2115 help
>> 2116 Set this to non-zero if building a guest kernel for KVM to skip RTC
>> 2117 emulation when determining guest CPU Frequency. Instead, the guest's
>> 2118 timer frequency is specified directly.
601 2119
602 config RISCV_ISA_V_UCOPY_THRESHOLD !! 2120 config MIPS_VA_BITS_48
603 int "Threshold size for vectorized use !! 2121 bool "48 bits virtual memory"
604 depends on RISCV_ISA_V !! 2122 depends on 64BIT
605 default 768 <<
606 help 2123 help
607 Prefer using vectorized copy_to_user !! 2124 Support a maximum at least 48 bits of application virtual memory.
608 workload size exceeds this value. !! 2125 Default is 40 bits or less, depending on the CPU.
>> 2126 This option result in a small memory overhead for page tables.
>> 2127 This option is only supported with 16k and 64k page sizes.
>> 2128 If unsure, say N.
609 2129
610 config RISCV_ISA_V_PREEMPTIVE !! 2130 choice
611 bool "Run kernel-mode Vector with kern !! 2131 prompt "Kernel page size"
612 depends on PREEMPTION !! 2132 default PAGE_SIZE_4KB
613 depends on RISCV_ISA_V !! 2133
614 default y !! 2134 config PAGE_SIZE_4KB
>> 2135 bool "4kB"
>> 2136 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
>> 2137 depends on !MIPS_VA_BITS_48
>> 2138 help
>> 2139 This option select the standard 4kB Linux page size. On some
>> 2140 R3000-family processors this is the only available page size. Using
>> 2141 4kB page size will minimize memory consumption and is therefore
>> 2142 recommended for low memory systems.
>> 2143
>> 2144 config PAGE_SIZE_8KB
>> 2145 bool "8kB"
>> 2146 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
>> 2147 depends on !MIPS_VA_BITS_48
>> 2148 help
>> 2149 Using 8kB page size will result in higher performance kernel at
>> 2150 the price of higher memory consumption. This option is available
>> 2151 only on R8000 and cnMIPS processors. Note that you will need a
>> 2152 suitable Linux distribution to support this.
>> 2153
>> 2154 config PAGE_SIZE_16KB
>> 2155 bool "16kB"
>> 2156 depends on !CPU_R3000 && !CPU_TX39XX
>> 2157 help
>> 2158 Using 16kB page size will result in higher performance kernel at
>> 2159 the price of higher memory consumption. This option is available on
>> 2160 all non-R3000 family processors. Note that you will need a suitable
>> 2161 Linux distribution to support this.
>> 2162
>> 2163 config PAGE_SIZE_32KB
>> 2164 bool "32kB"
>> 2165 depends on CPU_CAVIUM_OCTEON
>> 2166 depends on !MIPS_VA_BITS_48
>> 2167 help
>> 2168 Using 32kB page size will result in higher performance kernel at
>> 2169 the price of higher memory consumption. This option is available
>> 2170 only on cnMIPS cores. Note that you will need a suitable Linux
>> 2171 distribution to support this.
>> 2172
>> 2173 config PAGE_SIZE_64KB
>> 2174 bool "64kB"
>> 2175 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
>> 2176 help
>> 2177 Using 64kB page size will result in higher performance kernel at
>> 2178 the price of higher memory consumption. This option is available on
>> 2179 all non-R3000 family processor. Not that at the time of this
>> 2180 writing this option is still high experimental.
>> 2181
>> 2182 endchoice
>> 2183
>> 2184 config FORCE_MAX_ZONEORDER
>> 2185 int "Maximum zone order"
>> 2186 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2187 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
>> 2188 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2189 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
>> 2190 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2191 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
>> 2192 range 11 64
>> 2193 default "11"
>> 2194 help
>> 2195 The kernel memory allocator divides physically contiguous memory
>> 2196 blocks into "zones", where each zone is a power of two number of
>> 2197 pages. This option selects the largest power of two that the kernel
>> 2198 keeps in the memory allocator. If you need to allocate very large
>> 2199 blocks of physically contiguous memory, then you may need to
>> 2200 increase this value.
>> 2201
>> 2202 This config option is actually maximum order plus one. For example,
>> 2203 a value of 11 means that the largest free memory block is 2^10 pages.
>> 2204
>> 2205 The page size is not necessarily 4KB. Keep this in mind
>> 2206 when choosing a value for this option.
>> 2207
>> 2208 config BOARD_SCACHE
>> 2209 bool
>> 2210
>> 2211 config IP22_CPU_SCACHE
>> 2212 bool
>> 2213 select BOARD_SCACHE
>> 2214
>> 2215 #
>> 2216 # Support for a MIPS32 / MIPS64 style S-caches
>> 2217 #
>> 2218 config MIPS_CPU_SCACHE
>> 2219 bool
>> 2220 select BOARD_SCACHE
>> 2221
>> 2222 config R5000_CPU_SCACHE
>> 2223 bool
>> 2224 select BOARD_SCACHE
>> 2225
>> 2226 config RM7000_CPU_SCACHE
>> 2227 bool
>> 2228 select BOARD_SCACHE
>> 2229
>> 2230 config SIBYTE_DMA_PAGEOPS
>> 2231 bool "Use DMA to clear/copy pages"
>> 2232 depends on CPU_SB1
615 help 2233 help
616 Usually, in-kernel SIMD routines are !! 2234 Instead of using the CPU to zero and copy pages, use a Data Mover
617 Functions which envoke long running !! 2235 channel. These DMA channels are otherwise unused by the standard
618 vector unit to prevent blocking othe !! 2236 SiByte Linux port. Seems to give a small performance benefit.
619 2237
620 This config allows kernel to run SIM !! 2238 config CPU_HAS_PREFETCH
621 preemption. Enabling this config wil !! 2239 bool
622 consumption due to the allocation of <<
623 2240
624 config RISCV_ISA_ZAWRS !! 2241 config CPU_GENERIC_DUMP_TLB
625 bool "Zawrs extension support for more !! 2242 bool
626 depends on RISCV_ALTERNATIVE !! 2243 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
627 default y !! 2244
>> 2245 config CPU_R4K_FPU
>> 2246 bool
>> 2247 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
>> 2248
>> 2249 config CPU_R4K_CACHE_TLB
>> 2250 bool
>> 2251 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
>> 2252
>> 2253 config MIPS_MT_SMP
>> 2254 bool "MIPS MT SMP support (1 TC on each available VPE)"
>> 2255 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
>> 2256 select CPU_MIPSR2_IRQ_VI
>> 2257 select CPU_MIPSR2_IRQ_EI
>> 2258 select SYNC_R4K
>> 2259 select MIPS_MT
>> 2260 select SMP
>> 2261 select SMP_UP
>> 2262 select SYS_SUPPORTS_SMP
>> 2263 select SYS_SUPPORTS_SCHED_SMT
>> 2264 select MIPS_PERF_SHARED_TC_COUNTERS
>> 2265 help
>> 2266 This is a kernel model which is known as SMVP. This is supported
>> 2267 on cores with the MT ASE and uses the available VPEs to implement
>> 2268 virtual processors which supports SMP. This is equivalent to the
>> 2269 Intel Hyperthreading feature. For further information go to
>> 2270 <http://www.imgtec.com/mips/mips-multithreading.asp>.
>> 2271
>> 2272 config MIPS_MT
>> 2273 bool
>> 2274
>> 2275 config SCHED_SMT
>> 2276 bool "SMT (multithreading) scheduler support"
>> 2277 depends on SYS_SUPPORTS_SCHED_SMT
>> 2278 default n
628 help 2279 help
629 The Zawrs extension defines instruct !! 2280 SMT scheduler support improves the CPU scheduler's decision making
630 which allow a hart to enter a low-po !! 2281 when dealing with MIPS MT enabled cores at a cost of slightly
631 hypervisor while waiting on a store !! 2282 increased overhead in some places. If unsure say N here.
632 use of these instructions in the ker <<
633 detected at boot. <<
634 2283
635 If you don't know what to do here, s !! 2284 config SYS_SUPPORTS_SCHED_SMT
>> 2285 bool
636 2286
637 config TOOLCHAIN_HAS_ZBB !! 2287 config SYS_SUPPORTS_MULTITHREADING
638 bool 2288 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 2289
645 # This symbol indicates that the toolchain sup !! 2290 config MIPS_MT_FPAFF
646 # extensions, including Zvk*, Zvbb, and Zvbc. !! 2291 bool "Dynamic FPU affinity for FP-intensive threads"
647 # binutils added all except Zvkb, then added Z !! 2292 default y
648 config TOOLCHAIN_HAS_VECTOR_CRYPTO !! 2293 depends on MIPS_MT_SMP
649 def_bool $(as-instr, .option arch$(com <<
650 depends on AS_HAS_OPTION_ARCH <<
651 2294
652 config RISCV_ISA_ZBA !! 2295 config MIPSR2_TO_R6_EMULATOR
653 bool "Zba extension support for bit ma !! 2296 bool "MIPS R2-to-R6 emulator"
>> 2297 depends on CPU_MIPSR6
654 default y 2298 default y
655 help 2299 help
656 Add support for enabling optimisati !! 2300 Choose this option if you want to run non-R6 MIPS userland code.
657 extension is detected at boot. !! 2301 Even if you say 'Y' here, the emulator will still be disabled by
>> 2302 default. You can enable it using the 'mipsr2emu' kernel option.
>> 2303 The only reason this is a build-time option is to save ~14K from the
>> 2304 final kernel image.
>> 2305
>> 2306 config MIPS_VPE_LOADER
>> 2307 bool "VPE loader support."
>> 2308 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
>> 2309 select CPU_MIPSR2_IRQ_VI
>> 2310 select CPU_MIPSR2_IRQ_EI
>> 2311 select MIPS_MT
>> 2312 help
>> 2313 Includes a loader for loading an elf relocatable object
>> 2314 onto another VPE and running it.
658 2315
659 The Zba extension provides instruct !! 2316 config MIPS_VPE_LOADER_CMP
660 of addresses that index into arrays !! 2317 bool
>> 2318 default "y"
>> 2319 depends on MIPS_VPE_LOADER && MIPS_CMP
661 2320
662 If you don't know what to do here, !! 2321 config MIPS_VPE_LOADER_MT
>> 2322 bool
>> 2323 default "y"
>> 2324 depends on MIPS_VPE_LOADER && !MIPS_CMP
663 2325
664 config RISCV_ISA_ZBB !! 2326 config MIPS_VPE_LOADER_TOM
665 bool "Zbb extension support for bit ma !! 2327 bool "Load VPE program into memory hidden from linux"
666 depends on TOOLCHAIN_HAS_ZBB !! 2328 depends on MIPS_VPE_LOADER
667 depends on RISCV_ALTERNATIVE <<
668 default y 2329 default y
669 help 2330 help
670 Adds support to dynamically detect !! 2331 The loader can use memory that is present but has been hidden from
671 extension (basic bit manipulation) !! 2332 Linux using the kernel command line option "mem=xxMB". It's up to
>> 2333 you to ensure the amount you put in the option and the space your
>> 2334 program requires is less or equal to the amount physically present.
>> 2335
>> 2336 config MIPS_VPE_APSP_API
>> 2337 bool "Enable support for AP/SP API (RTLX)"
>> 2338 depends on MIPS_VPE_LOADER
>> 2339 help
>> 2340
>> 2341 config MIPS_VPE_APSP_API_CMP
>> 2342 bool
>> 2343 default "y"
>> 2344 depends on MIPS_VPE_APSP_API && MIPS_CMP
>> 2345
>> 2346 config MIPS_VPE_APSP_API_MT
>> 2347 bool
>> 2348 default "y"
>> 2349 depends on MIPS_VPE_APSP_API && !MIPS_CMP
>> 2350
>> 2351 config MIPS_CMP
>> 2352 bool "MIPS CMP framework support (DEPRECATED)"
>> 2353 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
>> 2354 select SMP
>> 2355 select SYNC_R4K
>> 2356 select SYS_SUPPORTS_SMP
>> 2357 select WEAK_ORDERING
>> 2358 default n
>> 2359 help
>> 2360 Select this if you are using a bootloader which implements the "CMP
>> 2361 framework" protocol (ie. YAMON) and want your kernel to make use of
>> 2362 its ability to start secondary CPUs.
>> 2363
>> 2364 Unless you have a specific need, you should use CONFIG_MIPS_CPS
>> 2365 instead of this.
>> 2366
>> 2367 config MIPS_CPS
>> 2368 bool "MIPS Coherent Processing System support"
>> 2369 depends on SYS_SUPPORTS_MIPS_CPS
>> 2370 select MIPS_CM
>> 2371 select MIPS_CPC
>> 2372 select MIPS_CPS_PM if HOTPLUG_CPU
>> 2373 select SMP
>> 2374 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
>> 2375 select SYS_SUPPORTS_HOTPLUG_CPU
>> 2376 select SYS_SUPPORTS_SMP
>> 2377 select WEAK_ORDERING
>> 2378 help
>> 2379 Select this if you wish to run an SMP kernel across multiple cores
>> 2380 within a MIPS Coherent Processing System. When this option is
>> 2381 enabled the kernel will probe for other cores and boot them with
>> 2382 no external assistance. It is safe to enable this when hardware
>> 2383 support is unavailable.
>> 2384
>> 2385 config MIPS_CPS_PM
>> 2386 depends on MIPS_CPS
>> 2387 select MIPS_CPC
>> 2388 bool
672 2389
673 The Zbb extension provides instruct !! 2390 config MIPS_CM
674 of bit-specific operations (count b !! 2391 bool
675 bitrotation, etc). <<
676 2392
677 If you don't know what to do here, !! 2393 config MIPS_CPC
>> 2394 bool
678 2395
679 config TOOLCHAIN_HAS_ZBC !! 2396 config SB1_PASS_2_WORKAROUNDS
680 bool 2397 bool
>> 2398 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
681 default y 2399 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 2400
687 config RISCV_ISA_ZBC !! 2401 config SB1_PASS_2_1_WORKAROUNDS
688 bool "Zbc extension support for carry- !! 2402 bool
689 depends on TOOLCHAIN_HAS_ZBC !! 2403 depends on CPU_SB1 && CPU_SB1_PASS_2
690 depends on MMU <<
691 depends on RISCV_ALTERNATIVE <<
692 default y 2404 default y
>> 2405
>> 2406
>> 2407 config ARCH_PHYS_ADDR_T_64BIT
>> 2408 bool
>> 2409
>> 2410 choice
>> 2411 prompt "SmartMIPS or microMIPS ASE support"
>> 2412
>> 2413 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
>> 2414 bool "None"
>> 2415 help
>> 2416 Select this if you want neither microMIPS nor SmartMIPS support
>> 2417
>> 2418 config CPU_HAS_SMARTMIPS
>> 2419 depends on SYS_SUPPORTS_SMARTMIPS
>> 2420 bool "SmartMIPS"
>> 2421 help
>> 2422 SmartMIPS is a extension of the MIPS32 architecture aimed at
>> 2423 increased security at both hardware and software level for
>> 2424 smartcards. Enabling this option will allow proper use of the
>> 2425 SmartMIPS instructions by Linux applications. However a kernel with
>> 2426 this option will not work on a MIPS core without SmartMIPS core. If
>> 2427 you don't know you probably don't have SmartMIPS and should say N
>> 2428 here.
>> 2429
>> 2430 config CPU_MICROMIPS
>> 2431 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
>> 2432 bool "microMIPS"
693 help 2433 help
694 Adds support to dynamically detect !! 2434 When this option is enabled the kernel will be built using the
695 extension (carry-less multiplicatio !! 2435 microMIPS ISA
>> 2436
>> 2437 endchoice
>> 2438
>> 2439 config CPU_HAS_MSA
>> 2440 bool "Support for the MIPS SIMD Architecture"
>> 2441 depends on CPU_SUPPORTS_MSA
>> 2442 depends on 64BIT || MIPS_O32_FP64_SUPPORT
>> 2443 help
>> 2444 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
>> 2445 and a set of SIMD instructions to operate on them. When this option
>> 2446 is enabled the kernel will support allocating & switching MSA
>> 2447 vector register contexts. If you know that your kernel will only be
>> 2448 running on CPUs which do not support MSA or that your userland will
>> 2449 not be making use of it then you may wish to say N here to reduce
>> 2450 the size & complexity of your kernel.
696 2451
697 The Zbc extension could accelerate !! 2452 If unsure, say Y.
698 calculations. <<
699 2453
700 If you don't know what to do here, !! 2454 config CPU_HAS_WB
>> 2455 bool
701 2456
702 config RISCV_ISA_ZICBOM !! 2457 config XKS01
703 bool "Zicbom extension support for non !! 2458 bool
704 depends on MMU !! 2459
705 depends on RISCV_ALTERNATIVE !! 2460 config CPU_HAS_RIXI
>> 2461 bool
>> 2462
>> 2463 #
>> 2464 # Vectored interrupt mode is an R2 feature
>> 2465 #
>> 2466 config CPU_MIPSR2_IRQ_VI
>> 2467 bool
>> 2468
>> 2469 #
>> 2470 # Extended interrupt mode is an R2 feature
>> 2471 #
>> 2472 config CPU_MIPSR2_IRQ_EI
>> 2473 bool
>> 2474
>> 2475 config CPU_HAS_SYNC
>> 2476 bool
>> 2477 depends on !CPU_R3000
706 default y 2478 default y
707 select RISCV_DMA_NONCOHERENT !! 2479
708 select DMA_DIRECT_REMAP !! 2480 #
>> 2481 # CPU non-features
>> 2482 #
>> 2483 config CPU_DADDI_WORKAROUNDS
>> 2484 bool
>> 2485
>> 2486 config CPU_R4000_WORKAROUNDS
>> 2487 bool
>> 2488 select CPU_R4400_WORKAROUNDS
>> 2489
>> 2490 config CPU_R4400_WORKAROUNDS
>> 2491 bool
>> 2492
>> 2493 config MIPS_ASID_SHIFT
>> 2494 int
>> 2495 default 6 if CPU_R3000 || CPU_TX39XX
>> 2496 default 4 if CPU_R8000
>> 2497 default 0
>> 2498
>> 2499 config MIPS_ASID_BITS
>> 2500 int
>> 2501 default 0 if MIPS_ASID_BITS_VARIABLE
>> 2502 default 6 if CPU_R3000 || CPU_TX39XX
>> 2503 default 8
>> 2504
>> 2505 config MIPS_ASID_BITS_VARIABLE
>> 2506 bool
>> 2507
>> 2508 #
>> 2509 # - Highmem only makes sense for the 32-bit kernel.
>> 2510 # - The current highmem code will only work properly on physically indexed
>> 2511 # caches such as R3000, SB1, R7000 or those that look like they're virtually
>> 2512 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
>> 2513 # moment we protect the user and offer the highmem option only on machines
>> 2514 # where it's known to be safe. This will not offer highmem on a few systems
>> 2515 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
>> 2516 # indexed CPUs but we're playing safe.
>> 2517 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
>> 2518 # know they might have memory configurations that could make use of highmem
>> 2519 # support.
>> 2520 #
>> 2521 config HIGHMEM
>> 2522 bool "High Memory Support"
>> 2523 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
>> 2524
>> 2525 config CPU_SUPPORTS_HIGHMEM
>> 2526 bool
>> 2527
>> 2528 config SYS_SUPPORTS_HIGHMEM
>> 2529 bool
>> 2530
>> 2531 config SYS_SUPPORTS_SMARTMIPS
>> 2532 bool
>> 2533
>> 2534 config SYS_SUPPORTS_MICROMIPS
>> 2535 bool
>> 2536
>> 2537 config SYS_SUPPORTS_MIPS16
>> 2538 bool
709 help 2539 help
710 Adds support to dynamically detect !! 2540 This option must be set if a kernel might be executed on a MIPS16-
711 extension (Cache Block Management O !! 2541 enabled CPU even if MIPS16 is not actually being used. In other
712 usage. !! 2542 words, it makes the kernel MIPS16-tolerant.
713 2543
714 The Zicbom extension can be used to !! 2544 config CPU_SUPPORTS_MSA
715 non-coherent DMA support on devices !! 2545 bool
716 2546
717 If you don't know what to do here, !! 2547 config ARCH_FLATMEM_ENABLE
>> 2548 def_bool y
>> 2549 depends on !NUMA && !CPU_LOONGSON2
718 2550
719 config RISCV_ISA_ZICBOZ !! 2551 config ARCH_DISCONTIGMEM_ENABLE
720 bool "Zicboz extension support for fas !! 2552 bool
721 depends on RISCV_ALTERNATIVE !! 2553 default y if SGI_IP27
722 default y <<
723 help 2554 help
724 Enable the use of the Zicboz extens !! 2555 Say Y to support efficient handling of discontiguous physical memory,
725 when available. !! 2556 for architectures which are either NUMA (Non-Uniform Memory Access)
>> 2557 or have huge holes in the physical address space for other reasons.
>> 2558 See <file:Documentation/vm/numa> for more.
726 2559
727 The Zicboz extension is used for fa !! 2560 config ARCH_SPARSEMEM_ENABLE
>> 2561 bool
>> 2562 select SPARSEMEM_STATIC
728 2563
729 If you don't know what to do here, !! 2564 config NUMA
>> 2565 bool "NUMA Support"
>> 2566 depends on SYS_SUPPORTS_NUMA
>> 2567 help
>> 2568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
>> 2569 Access). This option improves performance on systems with more
>> 2570 than two nodes; on two node systems it is generally better to
>> 2571 leave it disabled; on single node systems disable this option
>> 2572 disabled.
730 2573
731 config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI !! 2574 config SYS_SUPPORTS_NUMA
732 def_bool y !! 2575 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 2576
747 config TOOLCHAIN_NEEDS_OLD_ISA_SPEC !! 2577 config RELOCATABLE
748 def_bool y !! 2578 bool "Relocatable kernel"
749 depends on TOOLCHAIN_NEEDS_EXPLICIT_ZI !! 2579 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 2580 help
754 Certain versions of clang and GCC do !! 2581 This builds a kernel image that retains relocation information
755 -march. This option causes an older !! 2582 so it can be loaded someplace besides the default 1MB.
756 versions of clang and GCC to be pass !! 2583 The relocations make the kernel binary about 15% larger,
757 as passing zicsr and zifencei to -ma !! 2584 but are discarded at runtime
>> 2585
>> 2586 config RELOCATION_TABLE_SIZE
>> 2587 hex "Relocation table size"
>> 2588 depends on RELOCATABLE
>> 2589 range 0x0 0x01000000
>> 2590 default "0x00100000"
>> 2591 ---help---
>> 2592 A table of relocation data will be appended to the kernel binary
>> 2593 and parsed at boot to fix up the relocated kernel.
>> 2594
>> 2595 This option allows the amount of space reserved for the table to be
>> 2596 adjusted, although the default of 1Mb should be ok in most cases.
>> 2597
>> 2598 The build will fail and a valid size suggested if this is too small.
>> 2599
>> 2600 If unsure, leave at the default value.
>> 2601
>> 2602 config RANDOMIZE_BASE
>> 2603 bool "Randomize the address of the kernel image"
>> 2604 depends on RELOCATABLE
>> 2605 ---help---
>> 2606 Randomizes the physical and virtual address at which the
>> 2607 kernel image is loaded, as a security feature that
>> 2608 deters exploit attempts relying on knowledge of the location
>> 2609 of kernel internals.
>> 2610
>> 2611 Entropy is generated using any coprocessor 0 registers available.
>> 2612
>> 2613 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
>> 2614
>> 2615 If unsure, say N.
>> 2616
>> 2617 config RANDOMIZE_BASE_MAX_OFFSET
>> 2618 hex "Maximum kASLR offset" if EXPERT
>> 2619 depends on RANDOMIZE_BASE
>> 2620 range 0x0 0x40000000 if EVA || 64BIT
>> 2621 range 0x0 0x08000000
>> 2622 default "0x01000000"
>> 2623 ---help---
>> 2624 When kASLR is active, this provides the maximum offset that will
>> 2625 be applied to the kernel image. It should be set according to the
>> 2626 amount of physical RAM available in the target system minus
>> 2627 PHYSICAL_START and must be a power of 2.
758 2628
759 config FPU !! 2629 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
760 bool "FPU support" !! 2630 EVA or 64-bit. The default is 16Mb.
>> 2631
>> 2632 config NODES_SHIFT
>> 2633 int
>> 2634 default "6"
>> 2635 depends on NEED_MULTIPLE_NODES
>> 2636
>> 2637 config HW_PERF_EVENTS
>> 2638 bool "Enable hardware performance counter support for perf events"
>> 2639 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
761 default y 2640 default y
762 help 2641 help
763 Say N here if you want to disable al !! 2642 Enable hardware performance counter support for perf events. If
764 in the kernel. !! 2643 disabled, perf events will use software events only.
765 2644
766 If you don't know what to do here, s !! 2645 source "mm/Kconfig"
767 2646
768 config IRQ_STACKS !! 2647 config SMP
769 bool "Independent irq & softirq stacks !! 2648 bool "Multi-Processing support"
770 default y !! 2649 depends on SYS_SUPPORTS_SMP
771 select HAVE_IRQ_EXIT_ON_IRQ_STACK <<
772 select HAVE_SOFTIRQ_ON_OWN_STACK <<
773 help 2650 help
774 Add independent irq & softirq stacks !! 2651 This enables support for systems with more than one CPU. If you have
775 overflows. We may save some memory f !! 2652 a system with only one CPU, say N. If you have a system with more
>> 2653 than one CPU, say Y.
>> 2654
>> 2655 If you say N here, the kernel will run on uni- and multiprocessor
>> 2656 machines, but will use only one CPU of a multiprocessor machine. If
>> 2657 you say Y here, the kernel will run on many, but not all,
>> 2658 uniprocessor machines. On a uniprocessor machine, the kernel
>> 2659 will run faster if you say N here.
776 2660
777 config THREAD_SIZE_ORDER !! 2661 People using multiprocessor machines who say Y here should also say
778 int "Kernel stack size (in power-of-tw !! 2662 Y to "Enhanced Real Time Clock Support", below.
779 range 0 4 !! 2663
780 default 1 if 32BIT !! 2664 See also the SMP-HOWTO available at
781 default 2 !! 2665 <http://www.tldp.org/docs.html#howto>.
>> 2666
>> 2667 If you don't know what to do here, say N.
>> 2668
>> 2669 config HOTPLUG_CPU
>> 2670 bool "Support for hot-pluggable CPUs"
>> 2671 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
782 help 2672 help
783 Specify the Pages of thread stack si !! 2673 Say Y here to allow turning CPUs off and on. CPUs can be
784 affects irq stack size, which is equ !! 2674 controlled through /sys/devices/system/cpu.
>> 2675 (Note: power management support will enable this option
>> 2676 automatically on SMP systems. )
>> 2677 Say N if you want to disable CPU hotplug.
785 2678
786 config RISCV_MISALIGNED !! 2679 config SMP_UP
787 bool 2680 bool
788 select SYSCTL_ARCH_UNALIGN_ALLOW <<
789 help <<
790 Embed support for emulating misalign <<
791 2681
792 choice !! 2682 config SYS_SUPPORTS_MIPS_CMP
793 prompt "Unaligned Accesses Support" !! 2683 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 2684
841 endchoice !! 2685 config SYS_SUPPORTS_MIPS_CPS
>> 2686 bool
>> 2687
>> 2688 config SYS_SUPPORTS_SMP
>> 2689 bool
842 2690
843 source "arch/riscv/Kconfig.vendor" !! 2691 config NR_CPUS_DEFAULT_4
>> 2692 bool
844 2693
845 endmenu # "Platform type" !! 2694 config NR_CPUS_DEFAULT_8
>> 2695 bool
846 2696
847 menu "Kernel features" !! 2697 config NR_CPUS_DEFAULT_16
>> 2698 bool
848 2699
849 source "kernel/Kconfig.hz" !! 2700 config NR_CPUS_DEFAULT_32
>> 2701 bool
850 2702
851 config RISCV_SBI_V01 !! 2703 config NR_CPUS_DEFAULT_64
852 bool "SBI v0.1 support" !! 2704 bool
853 depends on RISCV_SBI <<
854 help <<
855 This config allows kernel to use SBI <<
856 deprecated in future once legacy M-m <<
857 2705
858 config RISCV_BOOT_SPINWAIT !! 2706 config NR_CPUS
859 bool "Spinwait booting method" !! 2707 int "Maximum number of CPUs (2-256)"
>> 2708 range 2 256
860 depends on SMP 2709 depends on SMP
861 default y if RISCV_SBI_V01 || RISCV_M_ !! 2710 default "4" if NR_CPUS_DEFAULT_4
>> 2711 default "8" if NR_CPUS_DEFAULT_8
>> 2712 default "16" if NR_CPUS_DEFAULT_16
>> 2713 default "32" if NR_CPUS_DEFAULT_32
>> 2714 default "64" if NR_CPUS_DEFAULT_64
>> 2715 help
>> 2716 This allows you to specify the maximum number of CPUs which this
>> 2717 kernel will support. The maximum supported value is 32 for 32-bit
>> 2718 kernel and 64 for 64-bit kernels; the minimum value which makes
>> 2719 sense is 1 for Qemu (useful only for kernel debugging purposes)
>> 2720 and 2 for all others.
>> 2721
>> 2722 This is purely to save memory - each supported CPU adds
>> 2723 approximately eight kilobytes to the kernel image. For best
>> 2724 performance should round up your number of processors to the next
>> 2725 power of two.
>> 2726
>> 2727 config MIPS_PERF_SHARED_TC_COUNTERS
>> 2728 bool
>> 2729
>> 2730 #
>> 2731 # Timer Interrupt Frequency Configuration
>> 2732 #
>> 2733
>> 2734 choice
>> 2735 prompt "Timer frequency"
>> 2736 default HZ_250
862 help 2737 help
863 This enables support for booting Lin !! 2738 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 2739
876 If unsure what to do here, say N. !! 2740 config HZ_24
>> 2741 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
877 2742
878 config ARCH_SUPPORTS_KEXEC !! 2743 config HZ_48
879 def_bool y !! 2744 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
880 2745
881 config ARCH_SELECTS_KEXEC !! 2746 config HZ_100
882 def_bool y !! 2747 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
883 depends on KEXEC <<
884 select HOTPLUG_CPU if SMP <<
885 2748
886 config ARCH_SUPPORTS_KEXEC_FILE !! 2749 config HZ_128
887 def_bool 64BIT !! 2750 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
888 2751
889 config ARCH_SELECTS_KEXEC_FILE !! 2752 config HZ_250
890 def_bool y !! 2753 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 2754
895 config ARCH_SUPPORTS_KEXEC_PURGATORY !! 2755 config HZ_256
896 def_bool ARCH_SUPPORTS_KEXEC_FILE !! 2756 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
897 2757
898 config ARCH_SUPPORTS_CRASH_DUMP !! 2758 config HZ_1000
899 def_bool y !! 2759 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
900 2760
901 config ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATIO !! 2761 config HZ_1024
902 def_bool CRASH_RESERVE !! 2762 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
903 2763
904 config COMPAT !! 2764 endchoice
905 bool "Kernel support for 32-bit U-mode !! 2765
906 default 64BIT !! 2766 config SYS_SUPPORTS_24HZ
907 depends on 64BIT && MMU !! 2767 bool
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 2768
933 If in doubt, say N here. !! 2769 config SYS_SUPPORTS_48HZ
>> 2770 bool
934 2771
935 config RELOCATABLE !! 2772 config SYS_SUPPORTS_100HZ
936 bool "Build a relocatable kernel" !! 2773 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 2774
948 If unsure, say N. !! 2775 config SYS_SUPPORTS_128HZ
>> 2776 bool
949 2777
950 config RANDOMIZE_BASE !! 2778 config SYS_SUPPORTS_250HZ
951 bool "Randomize the address of the ker !! 2779 bool
952 select RELOCATABLE <<
953 depends on MMU && 64BIT && !XIP_KERNEL <<
954 help <<
955 Randomizes the virtual address at wh <<
956 loaded, as a security feature that d <<
957 relying on knowledge of the location <<
958 <<
959 It is the bootloader's job to provid <<
960 random u64 value in /chosen/kaslr-se <<
961 <<
962 When booting via the UEFI stub, it w <<
963 EFI_RNG_PROTOCOL implementation (if <<
964 to the kernel proper. In addition, i <<
965 location of the kernel Image as well <<
966 <<
967 If unsure, say N. <<
968 <<
969 endmenu # "Kernel features" <<
970 <<
971 menu "Boot options" <<
972 <<
973 config CMDLINE <<
974 string "Built-in kernel command line" <<
975 help <<
976 For most platforms, the arguments fo <<
977 are provided at run-time, during boo <<
978 where either no arguments are being <<
979 arguments are insufficient or even i <<
980 2780
981 When that occurs, it is possible to !! 2781 config SYS_SUPPORTS_256HZ
982 line here and choose how the kernel !! 2782 bool
>> 2783
>> 2784 config SYS_SUPPORTS_1000HZ
>> 2785 bool
>> 2786
>> 2787 config SYS_SUPPORTS_1024HZ
>> 2788 bool
>> 2789
>> 2790 config SYS_SUPPORTS_ARBIT_HZ
>> 2791 bool
>> 2792 default y if !SYS_SUPPORTS_24HZ && \
>> 2793 !SYS_SUPPORTS_48HZ && \
>> 2794 !SYS_SUPPORTS_100HZ && \
>> 2795 !SYS_SUPPORTS_128HZ && \
>> 2796 !SYS_SUPPORTS_250HZ && \
>> 2797 !SYS_SUPPORTS_256HZ && \
>> 2798 !SYS_SUPPORTS_1000HZ && \
>> 2799 !SYS_SUPPORTS_1024HZ
>> 2800
>> 2801 config HZ
>> 2802 int
>> 2803 default 24 if HZ_24
>> 2804 default 48 if HZ_48
>> 2805 default 100 if HZ_100
>> 2806 default 128 if HZ_128
>> 2807 default 250 if HZ_250
>> 2808 default 256 if HZ_256
>> 2809 default 1000 if HZ_1000
>> 2810 default 1024 if HZ_1024
>> 2811
>> 2812 config SCHED_HRTICK
>> 2813 def_bool HIGH_RES_TIMERS
>> 2814
>> 2815 source "kernel/Kconfig.preempt"
>> 2816
>> 2817 config KEXEC
>> 2818 bool "Kexec system call"
>> 2819 select KEXEC_CORE
>> 2820 help
>> 2821 kexec is a system call that implements the ability to shutdown your
>> 2822 current kernel, and to start another kernel. It is like a reboot
>> 2823 but it is independent of the system firmware. And like a reboot
>> 2824 you can start any kernel with it, not just Linux.
>> 2825
>> 2826 The name comes from the similarity to the exec system call.
>> 2827
>> 2828 It is an ongoing process to be certain the hardware in a machine
>> 2829 is properly shutdown, so do not be surprised if this code does not
>> 2830 initially work for you. As of this writing the exact hardware
>> 2831 interface is strongly in flux, so no good recommendation can be
>> 2832 made.
>> 2833
>> 2834 config CRASH_DUMP
>> 2835 bool "Kernel crash dumps"
>> 2836 help
>> 2837 Generate crash dump after being started by kexec.
>> 2838 This should be normally only set in special crash dump kernels
>> 2839 which are loaded in the main kernel with kexec-tools into
>> 2840 a specially reserved region and then later executed after
>> 2841 a crash by kdump/kexec. The crash dump kernel must be compiled
>> 2842 to a memory address not used by the main kernel or firmware using
>> 2843 PHYSICAL_START.
>> 2844
>> 2845 config PHYSICAL_START
>> 2846 hex "Physical address where the kernel is loaded"
>> 2847 default "0xffffffff84000000" if 64BIT
>> 2848 default "0x84000000" if 32BIT
>> 2849 depends on CRASH_DUMP
>> 2850 help
>> 2851 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
>> 2852 If you plan to use kernel for capturing the crash dump change
>> 2853 this value to start of the reserved region (the "X" value as
>> 2854 specified in the "crashkernel=YM@XM" command line boot parameter
>> 2855 passed to the panic-ed kernel).
>> 2856
>> 2857 config SECCOMP
>> 2858 bool "Enable seccomp to safely compute untrusted bytecode"
>> 2859 depends on PROC_FS
>> 2860 default y
>> 2861 help
>> 2862 This kernel feature is useful for number crunching applications
>> 2863 that may need to compute untrusted bytecode during their
>> 2864 execution. By using pipes or other transports made available to
>> 2865 the process as file descriptors supporting the read/write
>> 2866 syscalls, it's possible to isolate those applications in
>> 2867 their own address space using seccomp. Once seccomp is
>> 2868 enabled via /proc/<pid>/seccomp, it cannot be disabled
>> 2869 and the task is only allowed to execute a few safe syscalls
>> 2870 defined by each seccomp mode.
>> 2871
>> 2872 If unsure, say Y. Only embedded should say N here.
>> 2873
>> 2874 config MIPS_O32_FP64_SUPPORT
>> 2875 bool "Support for O32 binaries using 64-bit FP"
>> 2876 depends on 32BIT || MIPS32_O32
>> 2877 help
>> 2878 When this is enabled, the kernel will support use of 64-bit floating
>> 2879 point registers with binaries using the O32 ABI along with the
>> 2880 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
>> 2881 32-bit MIPS systems this support is at the cost of increasing the
>> 2882 size and complexity of the compiled FPU emulator. Thus if you are
>> 2883 running a MIPS32 system and know that none of your userland binaries
>> 2884 will require 64-bit floating point, you may wish to reduce the size
>> 2885 of your kernel & potentially improve FP emulation performance by
>> 2886 saying N here.
>> 2887
>> 2888 Although binutils currently supports use of this flag the details
>> 2889 concerning its effect upon the O32 ABI in userland are still being
>> 2890 worked on. In order to avoid userland becoming dependant upon current
>> 2891 behaviour before the details have been finalised, this option should
>> 2892 be considered experimental and only enabled by those working upon
>> 2893 said details.
>> 2894
>> 2895 If unsure, say N.
>> 2896
>> 2897 config USE_OF
>> 2898 bool
>> 2899 select OF
>> 2900 select OF_EARLY_FLATTREE
>> 2901 select IRQ_DOMAIN
>> 2902
>> 2903 config BUILTIN_DTB
>> 2904 bool
983 2905
984 choice 2906 choice
985 prompt "Built-in command line usage" !! 2907 prompt "Kernel appended dtb support" if USE_OF
986 depends on CMDLINE != "" !! 2908 default MIPS_NO_APPENDED_DTB
987 default CMDLINE_FALLBACK !! 2909
988 help !! 2910 config MIPS_NO_APPENDED_DTB
989 Choose how the kernel will handle th !! 2911 bool "None"
990 line. !! 2912 help
991 !! 2913 Do not enable appended dtb support.
992 config CMDLINE_FALLBACK !! 2914
993 bool "Use bootloader kernel arguments !! 2915 config MIPS_ELF_APPENDED_DTB
994 help !! 2916 bool "vmlinux"
995 Use the built-in command line as fal !! 2917 help
996 during boot. This is the default beh !! 2918 With this option, the boot code will look for a device tree binary
997 !! 2919 DTB) included in the vmlinux ELF section .appended_dtb. By default
998 config CMDLINE_EXTEND !! 2920 it is empty and the DTB can be appended using binutils command
999 bool "Extend bootloader kernel argumen !! 2921 objcopy:
1000 help !! 2922
1001 The command-line arguments provided !! 2923 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
1002 appended to the built-in command li !! 2924
1003 cases where the provided arguments !! 2925 This is meant as a backward compatiblity convenience for those
1004 you don't want to or cannot modify !! 2926 systems with a bootloader that can't be upgraded to accommodate
1005 !! 2927 the documented boot protocol using a device tree.
1006 config CMDLINE_FORCE !! 2928
1007 bool "Always use the default kernel c !! 2929 config MIPS_RAW_APPENDED_DTB
1008 help !! 2930 bool "vmlinux.bin or vmlinuz.bin"
1009 Always use the built-in command lin !! 2931 help
1010 boot. This is useful in case you ne !! 2932 With this option, the boot code will look for a device tree binary
1011 command line on systems where you d !! 2933 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
1012 over it. !! 2934 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
>> 2935
>> 2936 This is meant as a backward compatibility convenience for those
>> 2937 systems with a bootloader that can't be upgraded to accommodate
>> 2938 the documented boot protocol using a device tree.
>> 2939
>> 2940 Beware that there is very little in terms of protection against
>> 2941 this option being confused by leftover garbage in memory that might
>> 2942 look like a DTB header after a reboot if no actual DTB is appended
>> 2943 to vmlinux.bin. Do not leave this option active in a production kernel
>> 2944 if you don't intend to always append a DTB.
>> 2945 endchoice
1013 2946
>> 2947 choice
>> 2948 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
>> 2949 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
>> 2950 !MIPS_MALTA && \
>> 2951 !CAVIUM_OCTEON_SOC
>> 2952 default MIPS_CMDLINE_FROM_BOOTLOADER
>> 2953
>> 2954 config MIPS_CMDLINE_FROM_DTB
>> 2955 depends on USE_OF
>> 2956 bool "Dtb kernel arguments if available"
>> 2957
>> 2958 config MIPS_CMDLINE_DTB_EXTEND
>> 2959 depends on USE_OF
>> 2960 bool "Extend dtb kernel arguments with bootloader arguments"
>> 2961
>> 2962 config MIPS_CMDLINE_FROM_BOOTLOADER
>> 2963 bool "Bootloader kernel arguments if available"
>> 2964
>> 2965 config MIPS_CMDLINE_BUILTIN_EXTEND
>> 2966 depends on CMDLINE_BOOL
>> 2967 bool "Extend builtin kernel arguments with bootloader arguments"
1014 endchoice 2968 endchoice
1015 2969
1016 config EFI_STUB !! 2970 endmenu
>> 2971
>> 2972 config LOCKDEP_SUPPORT
>> 2973 bool
>> 2974 default y
>> 2975
>> 2976 config STACKTRACE_SUPPORT
1017 bool 2977 bool
>> 2978 default y
1018 2979
1019 config EFI !! 2980 config HAVE_LATENCYTOP_SUPPORT
1020 bool "UEFI runtime support" !! 2981 bool
1021 depends on OF && !XIP_KERNEL !! 2982 default y
1022 depends on MMU !! 2983
1023 default y !! 2984 config PGTABLE_LEVELS
1024 select ARCH_SUPPORTS_ACPI if 64BIT !! 2985 int
1025 select EFI_GENERIC_STUB !! 2986 default 3 if 64BIT && !PAGE_SIZE_64KB
1026 select EFI_PARAMS_FROM_FDT !! 2987 default 2
1027 select EFI_RUNTIME_WRAPPERS !! 2988
1028 select EFI_STUB !! 2989 source "init/Kconfig"
1029 select LIBFDT !! 2990
1030 select RISCV_ISA_C !! 2991 source "kernel/Kconfig.freezer"
1031 select UCS2_STRING !! 2992
1032 help !! 2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1033 This option provides support for ru !! 2994
1034 by UEFI firmware (such as non-volat !! 2995 config HW_HAS_EISA
1035 clock, and platform reset). A UEFI !! 2996 bool
1036 allow the kernel to be booted as an !! 2997 config HW_HAS_PCI
1037 is only useful on systems that have !! 2998 bool
>> 2999
>> 3000 config PCI
>> 3001 bool "Support for PCI controller"
>> 3002 depends on HW_HAS_PCI
>> 3003 select PCI_DOMAINS
>> 3004 help
>> 3005 Find out whether you have a PCI motherboard. PCI is the name of a
>> 3006 bus system, i.e. the way the CPU talks to the other stuff inside
>> 3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
>> 3008 say Y, otherwise N.
>> 3009
>> 3010 config HT_PCI
>> 3011 bool "Support for HT-linked PCI"
>> 3012 default y
>> 3013 depends on CPU_LOONGSON3
>> 3014 select PCI
>> 3015 select PCI_DOMAINS
>> 3016 help
>> 3017 Loongson family machines use Hyper-Transport bus for inter-core
>> 3018 connection and device connection. The PCI bus is a subordinate
>> 3019 linked at HT. Choose Y for Loongson-3 based machines.
>> 3020
>> 3021 config PCI_DOMAINS
>> 3022 bool
>> 3023
>> 3024 config PCI_DOMAINS_GENERIC
>> 3025 bool
>> 3026
>> 3027 config PCI_DRIVERS_GENERIC
>> 3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
>> 3029 bool
1038 3030
1039 config DMI !! 3031 config PCI_DRIVERS_LEGACY
1040 bool "Enable support for SMBIOS (DMI) !! 3032 def_bool !PCI_DRIVERS_GENERIC
1041 depends on EFI !! 3033 select NO_GENERIC_PCI_IOPORT_MAP
>> 3034
>> 3035 source "drivers/pci/Kconfig"
>> 3036
>> 3037 #
>> 3038 # ISA support is now enabled via select. Too many systems still have the one
>> 3039 # or other ISA chip on the board that users don't know about so don't expect
>> 3040 # users to choose the right thing ...
>> 3041 #
>> 3042 config ISA
>> 3043 bool
>> 3044
>> 3045 config EISA
>> 3046 bool "EISA support"
>> 3047 depends on HW_HAS_EISA
>> 3048 select ISA
>> 3049 select GENERIC_ISA_DMA
>> 3050 ---help---
>> 3051 The Extended Industry Standard Architecture (EISA) bus was
>> 3052 developed as an open alternative to the IBM MicroChannel bus.
>> 3053
>> 3054 The EISA bus provided some of the features of the IBM MicroChannel
>> 3055 bus while maintaining backward compatibility with cards made for
>> 3056 the older ISA bus. The EISA bus saw limited use between 1988 and
>> 3057 1995 when it was made obsolete by the PCI bus.
>> 3058
>> 3059 Say Y here if you are building a kernel for an EISA-based machine.
>> 3060
>> 3061 Otherwise, say N.
>> 3062
>> 3063 source "drivers/eisa/Kconfig"
>> 3064
>> 3065 config TC
>> 3066 bool "TURBOchannel support"
>> 3067 depends on MACH_DECSTATION
>> 3068 help
>> 3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
>> 3070 processors. TURBOchannel programming specifications are available
>> 3071 at:
>> 3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
>> 3073 and:
>> 3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
>> 3075 Linux driver support status is documented at:
>> 3076 <http://www.linux-mips.org/wiki/DECstation>
>> 3077
>> 3078 config MMU
>> 3079 bool
1042 default y 3080 default y
1043 help <<
1044 This enables SMBIOS/DMI feature for <<
1045 3081
1046 This option is only useful on syste !! 3082 config ARCH_MMAP_RND_BITS_MIN
1047 However, even with this option, the !! 3083 default 12 if 64BIT
1048 continue to boot on existing non-UE !! 3084 default 8
1049 3085
1050 config CC_HAVE_STACKPROTECTOR_TLS !! 3086 config ARCH_MMAP_RND_BITS_MAX
1051 def_bool $(cc-option,-mstack-protecto !! 3087 default 18 if 64BIT
>> 3088 default 15
1052 3089
1053 config STACKPROTECTOR_PER_TASK !! 3090 config ARCH_MMAP_RND_COMPAT_BITS_MIN
1054 def_bool y !! 3091 default 8
1055 depends on !RANDSTRUCT <<
1056 depends on STACKPROTECTOR && CC_HAVE_ <<
1057 3092
1058 config PHYS_RAM_BASE_FIXED !! 3093 config ARCH_MMAP_RND_COMPAT_BITS_MAX
1059 bool "Explicitly specified physical R !! 3094 default 15
1060 depends on NONPORTABLE <<
1061 default n <<
1062 3095
1063 config PHYS_RAM_BASE !! 3096 config I8253
1064 hex "Platform Physical RAM address" !! 3097 bool
1065 depends on PHYS_RAM_BASE_FIXED !! 3098 select CLKSRC_I8253
1066 default "0x80000000" !! 3099 select CLKEVT_I8253
1067 help !! 3100 select MIPS_EXTERNAL_TIMER
1068 This is the physical address of RAM <<
1069 explicitly specified to run early r <<
1070 from flash to RAM. <<
1071 <<
1072 config XIP_KERNEL <<
1073 bool "Kernel Execute-In-Place from RO <<
1074 depends on MMU && SPARSEMEM && NONPOR <<
1075 # This prevents XIP from being enable <<
1076 # fail to build since XIP doesn't sup <<
1077 depends on !COMPILE_TEST <<
1078 select PHYS_RAM_BASE_FIXED <<
1079 help <<
1080 Execute-In-Place allows the kernel <<
1081 directly addressable by the CPU, su <<
1082 space since the text section of the <<
1083 to RAM. Read-write sections, such <<
1084 are still copied to RAM. The XIP k <<
1085 it has to run directly from flash, <<
1086 store it. The flash address used t <<
1087 and for storing it, is configuratio <<
1088 say Y here, you must know the prope <<
1089 store the kernel image depending on <<
1090 <<
1091 Also note that the make target beco <<
1092 "make zImage" or "make Image". The <<
1093 ROM memory will be arch/riscv/boot/ <<
1094 <<
1095 SPARSEMEM is required because the k <<
1096 flash resident are not backed by me <<
1097 a struct page on those regions will <<
1098 3101
1099 If unsure, say N. !! 3102 config ZONE_DMA
>> 3103 bool
>> 3104
>> 3105 config ZONE_DMA32
>> 3106 bool
1100 3107
1101 config XIP_PHYS_ADDR !! 3108 source "drivers/pcmcia/Kconfig"
1102 hex "XIP Kernel Physical Location" <<
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 3109
1128 config BUILTIN_DTB !! 3110 config RAPIDIO
1129 bool "Built-in device tree" !! 3111 tristate "RapidIO support"
1130 depends on OF && NONPORTABLE !! 3112 depends on PCI
>> 3113 default n
1131 help 3114 help
1132 Build a device tree into the Linux !! 3115 If you say Y here, the kernel will include drivers and
1133 This option should be selected if n !! 3116 infrastructure code to support RapidIO interconnect devices.
1134 If unsure, say N. <<
1135 3117
>> 3118 source "drivers/rapidio/Kconfig"
1136 3119
1137 config BUILTIN_DTB_SOURCE !! 3120 endmenu
1138 string "Built-in device tree source" !! 3121
1139 depends on BUILTIN_DTB !! 3122 menu "Executable file formats"
1140 help <<
1141 DTS file path (without suffix, rela <<
1142 for the DTS file that will be used <<
1143 kernel. <<
1144 3123
1145 endmenu # "Boot options" !! 3124 source "fs/Kconfig.binfmt"
1146 3125
1147 config PORTABLE !! 3126 config TRAD_SIGNALS
1148 bool 3127 bool
1149 default !NONPORTABLE <<
1150 select EFI <<
1151 select MMU <<
1152 select OF <<
1153 3128
1154 config ARCH_PROC_KCORE_TEXT !! 3129 config MIPS32_COMPAT
1155 def_bool y !! 3130 bool
1156 3131
1157 menu "Power management options" !! 3132 config COMPAT
>> 3133 bool
1158 3134
1159 source "kernel/power/Kconfig" !! 3135 config SYSVIPC_COMPAT
>> 3136 bool
>> 3137
>> 3138 config MIPS32_O32
>> 3139 bool "Kernel support for o32 binaries"
>> 3140 depends on 64BIT
>> 3141 select ARCH_WANT_OLD_COMPAT_IPC
>> 3142 select COMPAT
>> 3143 select MIPS32_COMPAT
>> 3144 select SYSVIPC_COMPAT if SYSVIPC
>> 3145 help
>> 3146 Select this option if you want to run o32 binaries. These are pure
>> 3147 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
>> 3148 existing binaries are in this format.
>> 3149
>> 3150 If unsure, say Y.
>> 3151
>> 3152 config MIPS32_N32
>> 3153 bool "Kernel support for n32 binaries"
>> 3154 depends on 64BIT
>> 3155 select COMPAT
>> 3156 select MIPS32_COMPAT
>> 3157 select SYSVIPC_COMPAT if SYSVIPC
>> 3158 help
>> 3159 Select this option if you want to run n32 binaries. These are
>> 3160 64-bit binaries using 32-bit quantities for addressing and certain
>> 3161 data that would normally be 64-bit. They are used in special
>> 3162 cases.
>> 3163
>> 3164 If unsure, say N.
>> 3165
>> 3166 config BINFMT_ELF32
>> 3167 bool
>> 3168 default y if MIPS32_O32 || MIPS32_N32
>> 3169 select ELFCORE
>> 3170
>> 3171 endmenu
>> 3172
>> 3173 menu "Power management options"
1160 3174
1161 config ARCH_HIBERNATION_POSSIBLE 3175 config ARCH_HIBERNATION_POSSIBLE
1162 def_bool y 3176 def_bool y
1163 !! 3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1164 config ARCH_HIBERNATION_HEADER <<
1165 def_bool HIBERNATION <<
1166 3178
1167 config ARCH_SUSPEND_POSSIBLE 3179 config ARCH_SUSPEND_POSSIBLE
1168 def_bool y 3180 def_bool y
>> 3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
1169 3182
1170 endmenu # "Power management options" !! 3183 source "kernel/power/Kconfig"
>> 3184
>> 3185 endmenu
>> 3186
>> 3187 config MIPS_EXTERNAL_TIMER
>> 3188 bool
1171 3189
1172 menu "CPU Power Management" 3190 menu "CPU Power Management"
1173 3191
>> 3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
>> 3193 source "drivers/cpufreq/Kconfig"
>> 3194 endif
>> 3195
1174 source "drivers/cpuidle/Kconfig" 3196 source "drivers/cpuidle/Kconfig"
1175 3197
1176 source "drivers/cpufreq/Kconfig" !! 3198 endmenu
>> 3199
>> 3200 source "net/Kconfig"
>> 3201
>> 3202 source "drivers/Kconfig"
>> 3203
>> 3204 source "drivers/firmware/Kconfig"
>> 3205
>> 3206 source "fs/Kconfig"
>> 3207
>> 3208 source "arch/mips/Kconfig.debug"
>> 3209
>> 3210 source "security/Kconfig"
1177 3211
1178 endmenu # "CPU Power Management" !! 3212 source "crypto/Kconfig"
1179 3213
1180 source "arch/riscv/kvm/Kconfig" !! 3214 source "lib/Kconfig"
1181 3215
1182 source "drivers/acpi/Kconfig" !! 3216 source "arch/mips/kvm/Kconfig"
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