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