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_DEBUG_VIRTUAL if !64BIT 8 select ARCH_HAS_FORTIFY_SOURCE 9 select ARCH_HAS_KCOV 10 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA 11 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI) 12 select ARCH_HAS_STRNCPY_FROM_USER 13 select ARCH_HAS_STRNLEN_USER 14 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 15 select ARCH_HAS_UBSAN_SANITIZE_ALL 16 select ARCH_HAS_GCOV_PROFILE_ALL 17 select ARCH_KEEP_MEMBLOCK 18 select ARCH_SUPPORTS_UPROBES 19 select ARCH_USE_BUILTIN_BSWAP 20 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT 21 select ARCH_USE_MEMTEST 22 select ARCH_USE_QUEUED_RWLOCKS 23 select ARCH_USE_QUEUED_SPINLOCKS 24 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES 25 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU 26 select ARCH_WANT_IPC_PARSE_VERSION 27 select ARCH_WANT_LD_ORPHAN_WARN 28 select BUILDTIME_TABLE_SORT 29 select CLONE_BACKWARDS 30 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) 31 select CPU_PM if CPU_IDLE 32 select GENERIC_ATOMIC64 if !64BIT 33 select GENERIC_CMOS_UPDATE 34 select GENERIC_CPU_AUTOPROBE 35 select GENERIC_FIND_FIRST_BIT 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_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 50 select HANDLE_DOMAIN_IRQ 51 select HAVE_ARCH_COMPILER_H 52 select HAVE_ARCH_JUMP_LABEL 53 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT 54 select HAVE_ARCH_MMAP_RND_BITS if MMU 55 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 56 select HAVE_ARCH_SECCOMP_FILTER 57 select HAVE_ARCH_TRACEHOOK 58 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 59 select HAVE_ASM_MODVERSIONS 60 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS 61 select HAVE_CONTEXT_TRACKING 62 select HAVE_TIF_NOHZ 63 select HAVE_C_RECORDMCOUNT 64 select HAVE_DEBUG_KMEMLEAK 65 select HAVE_DEBUG_STACKOVERFLOW 66 select HAVE_DMA_CONTIGUOUS 67 select HAVE_DYNAMIC_FTRACE 68 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2 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 VIRT_TO_BUS 102 select ARCH_HAS_ELFCORE_COMPAT 103 104config MIPS_FIXUP_BIGPHYS_ADDR 105 bool 106 107config MIPS_GENERIC 108 bool 109 110config MACH_INGENIC 111 bool 112 select SYS_SUPPORTS_32BIT_KERNEL 113 select SYS_SUPPORTS_LITTLE_ENDIAN 114 select SYS_SUPPORTS_ZBOOT 115 select DMA_NONCOHERENT 116 select ARCH_HAS_SYNC_DMA_FOR_CPU 117 select IRQ_MIPS_CPU 118 select PINCTRL 119 select GPIOLIB 120 select COMMON_CLK 121 select GENERIC_IRQ_CHIP 122 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 123 select USE_OF 124 select CPU_SUPPORTS_CPUFREQ 125 select MIPS_EXTERNAL_TIMER 126 127menu "Machine selection" 128 129choice 130 prompt "System type" 131 default MIPS_GENERIC_KERNEL 132 133config MIPS_GENERIC_KERNEL 134 bool "Generic board-agnostic MIPS kernel" 135 select ARCH_HAS_SETUP_DMA_OPS 136 select MIPS_GENERIC 137 select BOOT_RAW 138 select BUILTIN_DTB 139 select CEVT_R4K 140 select CLKSRC_MIPS_GIC 141 select COMMON_CLK 142 select CPU_MIPSR2_IRQ_EI 143 select CPU_MIPSR2_IRQ_VI 144 select CSRC_R4K 145 select DMA_NONCOHERENT 146 select HAVE_PCI 147 select IRQ_MIPS_CPU 148 select MIPS_AUTO_PFN_OFFSET 149 select MIPS_CPU_SCACHE 150 select MIPS_GIC 151 select MIPS_L1_CACHE_SHIFT_7 152 select NO_EXCEPT_FILL 153 select PCI_DRIVERS_GENERIC 154 select SMP_UP if SMP 155 select SWAP_IO_SPACE 156 select SYS_HAS_CPU_MIPS32_R1 157 select SYS_HAS_CPU_MIPS32_R2 158 select SYS_HAS_CPU_MIPS32_R6 159 select SYS_HAS_CPU_MIPS64_R1 160 select SYS_HAS_CPU_MIPS64_R2 161 select SYS_HAS_CPU_MIPS64_R6 162 select SYS_SUPPORTS_32BIT_KERNEL 163 select SYS_SUPPORTS_64BIT_KERNEL 164 select SYS_SUPPORTS_BIG_ENDIAN 165 select SYS_SUPPORTS_HIGHMEM 166 select SYS_SUPPORTS_LITTLE_ENDIAN 167 select SYS_SUPPORTS_MICROMIPS 168 select SYS_SUPPORTS_MIPS16 169 select SYS_SUPPORTS_MIPS_CPS 170 select SYS_SUPPORTS_MULTITHREADING 171 select SYS_SUPPORTS_RELOCATABLE 172 select SYS_SUPPORTS_SMARTMIPS 173 select SYS_SUPPORTS_ZBOOT 174 select UHI_BOOT 175 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 176 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 177 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 178 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 179 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 180 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 181 select USE_OF 182 help 183 Select this to build a kernel which aims to support multiple boards, 184 generally using a flattened device tree passed from the bootloader 185 using the boot protocol defined in the UHI (Unified Hosting 186 Interface) specification. 187 188config MIPS_ALCHEMY 189 bool "Alchemy processor based machines" 190 select PHYS_ADDR_T_64BIT 191 select CEVT_R4K 192 select CSRC_R4K 193 select IRQ_MIPS_CPU 194 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is 195 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 196 select SYS_HAS_CPU_MIPS32_R1 197 select SYS_SUPPORTS_32BIT_KERNEL 198 select SYS_SUPPORTS_APM_EMULATION 199 select GPIOLIB 200 select SYS_SUPPORTS_ZBOOT 201 select COMMON_CLK 202 203config AR7 204 bool "Texas Instruments AR7" 205 select BOOT_ELF32 206 select COMMON_CLK 207 select DMA_NONCOHERENT 208 select CEVT_R4K 209 select CSRC_R4K 210 select IRQ_MIPS_CPU 211 select NO_EXCEPT_FILL 212 select SWAP_IO_SPACE 213 select SYS_HAS_CPU_MIPS32_R1 214 select SYS_HAS_EARLY_PRINTK 215 select SYS_SUPPORTS_32BIT_KERNEL 216 select SYS_SUPPORTS_LITTLE_ENDIAN 217 select SYS_SUPPORTS_MIPS16 218 select SYS_SUPPORTS_ZBOOT_UART16550 219 select GPIOLIB 220 select VLYNQ 221 help 222 Support for the Texas Instruments AR7 System-on-a-Chip 223 family: TNETD7100, 7200 and 7300. 224 225config ATH25 226 bool "Atheros AR231x/AR531x SoC support" 227 select CEVT_R4K 228 select CSRC_R4K 229 select DMA_NONCOHERENT 230 select IRQ_MIPS_CPU 231 select IRQ_DOMAIN 232 select SYS_HAS_CPU_MIPS32_R1 233 select SYS_SUPPORTS_BIG_ENDIAN 234 select SYS_SUPPORTS_32BIT_KERNEL 235 select SYS_HAS_EARLY_PRINTK 236 help 237 Support for Atheros AR231x and Atheros AR531x based boards 238 239config ATH79 240 bool "Atheros AR71XX/AR724X/AR913X based boards" 241 select ARCH_HAS_RESET_CONTROLLER 242 select BOOT_RAW 243 select CEVT_R4K 244 select CSRC_R4K 245 select DMA_NONCOHERENT 246 select GPIOLIB 247 select PINCTRL 248 select COMMON_CLK 249 select IRQ_MIPS_CPU 250 select SYS_HAS_CPU_MIPS32_R2 251 select SYS_HAS_EARLY_PRINTK 252 select SYS_SUPPORTS_32BIT_KERNEL 253 select SYS_SUPPORTS_BIG_ENDIAN 254 select SYS_SUPPORTS_MIPS16 255 select SYS_SUPPORTS_ZBOOT_UART_PROM 256 select USE_OF 257 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 258 help 259 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 260 261config BMIPS_GENERIC 262 bool "Broadcom Generic BMIPS kernel" 263 select ARCH_HAS_RESET_CONTROLLER 264 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 265 select ARCH_HAS_PHYS_TO_DMA 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 help 294 Build a generic DT-based kernel image that boots on select 295 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 296 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 297 must be set appropriately for your board. 298 299config BCM47XX 300 bool "Broadcom BCM47XX based boards" 301 select BOOT_RAW 302 select CEVT_R4K 303 select CSRC_R4K 304 select DMA_NONCOHERENT 305 select HAVE_PCI 306 select IRQ_MIPS_CPU 307 select SYS_HAS_CPU_MIPS32_R1 308 select NO_EXCEPT_FILL 309 select SYS_SUPPORTS_32BIT_KERNEL 310 select SYS_SUPPORTS_LITTLE_ENDIAN 311 select SYS_SUPPORTS_MIPS16 312 select SYS_SUPPORTS_ZBOOT 313 select SYS_HAS_EARLY_PRINTK 314 select USE_GENERIC_EARLY_PRINTK_8250 315 select GPIOLIB 316 select LEDS_GPIO_REGISTER 317 select BCM47XX_NVRAM 318 select BCM47XX_SPROM 319 select BCM47XX_SSB if !BCM47XX_BCMA 320 help 321 Support for BCM47XX based boards 322 323config BCM63XX 324 bool "Broadcom BCM63XX based boards" 325 select BOOT_RAW 326 select CEVT_R4K 327 select CSRC_R4K 328 select SYNC_R4K 329 select DMA_NONCOHERENT 330 select IRQ_MIPS_CPU 331 select SYS_SUPPORTS_32BIT_KERNEL 332 select SYS_SUPPORTS_BIG_ENDIAN 333 select SYS_HAS_EARLY_PRINTK 334 select SWAP_IO_SPACE 335 select GPIOLIB 336 select MIPS_L1_CACHE_SHIFT_4 337 select HAVE_LEGACY_CLK 338 help 339 Support for BCM63XX based boards 340 341config MIPS_COBALT 342 bool "Cobalt Server" 343 select CEVT_R4K 344 select CSRC_R4K 345 select CEVT_GT641XX 346 select DMA_NONCOHERENT 347 select FORCE_PCI 348 select I8253 349 select I8259 350 select IRQ_MIPS_CPU 351 select IRQ_GT641XX 352 select PCI_GT64XXX_PCI0 353 select SYS_HAS_CPU_NEVADA 354 select SYS_HAS_EARLY_PRINTK 355 select SYS_SUPPORTS_32BIT_KERNEL 356 select SYS_SUPPORTS_64BIT_KERNEL 357 select SYS_SUPPORTS_LITTLE_ENDIAN 358 select USE_GENERIC_EARLY_PRINTK_8250 359 360config MACH_DECSTATION 361 bool "DECstations" 362 select BOOT_ELF32 363 select CEVT_DS1287 364 select CEVT_R4K if CPU_R4X00 365 select CSRC_IOASIC 366 select CSRC_R4K if CPU_R4X00 367 select CPU_DADDI_WORKAROUNDS if 64BIT 368 select CPU_R4000_WORKAROUNDS if 64BIT 369 select CPU_R4400_WORKAROUNDS if 64BIT 370 select DMA_NONCOHERENT 371 select NO_IOPORT_MAP 372 select IRQ_MIPS_CPU 373 select SYS_HAS_CPU_R3000 374 select SYS_HAS_CPU_R4X00 375 select SYS_SUPPORTS_32BIT_KERNEL 376 select SYS_SUPPORTS_64BIT_KERNEL 377 select SYS_SUPPORTS_LITTLE_ENDIAN 378 select SYS_SUPPORTS_128HZ 379 select SYS_SUPPORTS_256HZ 380 select SYS_SUPPORTS_1024HZ 381 select MIPS_L1_CACHE_SHIFT_4 382 help 383 This enables support for DEC's MIPS based workstations. For details 384 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 385 DECstation porting pages on <http://decstation.unix-ag.org/>. 386 387 If you have one of the following DECstation Models you definitely 388 want to choose R4xx0 for the CPU Type: 389 390 DECstation 5000/50 391 DECstation 5000/150 392 DECstation 5000/260 393 DECsystem 5900/260 394 395 otherwise choose R3000. 396 397config MACH_JAZZ 398 bool "Jazz family of machines" 399 select ARC_MEMORY 400 select ARC_PROMLIB 401 select ARCH_MIGHT_HAVE_PC_PARPORT 402 select ARCH_MIGHT_HAVE_PC_SERIO 403 select DMA_OPS 404 select FW_ARC 405 select FW_ARC32 406 select ARCH_MAY_HAVE_PC_FDC 407 select CEVT_R4K 408 select CSRC_R4K 409 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 410 select GENERIC_ISA_DMA 411 select HAVE_PCSPKR_PLATFORM 412 select IRQ_MIPS_CPU 413 select I8253 414 select I8259 415 select ISA 416 select SYS_HAS_CPU_R4X00 417 select SYS_SUPPORTS_32BIT_KERNEL 418 select SYS_SUPPORTS_64BIT_KERNEL 419 select SYS_SUPPORTS_100HZ 420 select SYS_SUPPORTS_LITTLE_ENDIAN 421 help 422 This a family of machines based on the MIPS R4030 chipset which was 423 used by several vendors to build RISC/os and Windows NT workstations. 424 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 425 Olivetti M700-10 workstations. 426 427config MACH_INGENIC_SOC 428 bool "Ingenic SoC based machines" 429 select MIPS_GENERIC 430 select MACH_INGENIC 431 select SYS_SUPPORTS_ZBOOT_UART16550 432 select CPU_SUPPORTS_CPUFREQ 433 select MIPS_EXTERNAL_TIMER 434 435config LANTIQ 436 bool "Lantiq based platforms" 437 select DMA_NONCOHERENT 438 select IRQ_MIPS_CPU 439 select CEVT_R4K 440 select CSRC_R4K 441 select SYS_HAS_CPU_MIPS32_R1 442 select SYS_HAS_CPU_MIPS32_R2 443 select SYS_SUPPORTS_BIG_ENDIAN 444 select SYS_SUPPORTS_32BIT_KERNEL 445 select SYS_SUPPORTS_MIPS16 446 select SYS_SUPPORTS_MULTITHREADING 447 select SYS_SUPPORTS_VPE_LOADER 448 select SYS_HAS_EARLY_PRINTK 449 select GPIOLIB 450 select SWAP_IO_SPACE 451 select BOOT_RAW 452 select HAVE_LEGACY_CLK 453 select USE_OF 454 select PINCTRL 455 select PINCTRL_LANTIQ 456 select ARCH_HAS_RESET_CONTROLLER 457 select RESET_CONTROLLER 458 459config MACH_LOONGSON32 460 bool "Loongson 32-bit family of machines" 461 select SYS_SUPPORTS_ZBOOT 462 help 463 This enables support for the Loongson-1 family of machines. 464 465 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 466 the Institute of Computing Technology (ICT), Chinese Academy of 467 Sciences (CAS). 468 469config MACH_LOONGSON2EF 470 bool "Loongson-2E/F family of machines" 471 select SYS_SUPPORTS_ZBOOT 472 help 473 This enables the support of early Loongson-2E/F family of machines. 474 475config MACH_LOONGSON64 476 bool "Loongson 64-bit family of machines" 477 select ARCH_SPARSEMEM_ENABLE 478 select ARCH_MIGHT_HAVE_PC_PARPORT 479 select ARCH_MIGHT_HAVE_PC_SERIO 480 select GENERIC_ISA_DMA_SUPPORT_BROKEN 481 select BOOT_ELF32 482 select BOARD_SCACHE 483 select CSRC_R4K 484 select CEVT_R4K 485 select CPU_HAS_WB 486 select FORCE_PCI 487 select ISA 488 select I8259 489 select IRQ_MIPS_CPU 490 select NO_EXCEPT_FILL 491 select NR_CPUS_DEFAULT_64 492 select USE_GENERIC_EARLY_PRINTK_8250 493 select PCI_DRIVERS_GENERIC 494 select SYS_HAS_CPU_LOONGSON64 495 select SYS_HAS_EARLY_PRINTK 496 select SYS_SUPPORTS_SMP 497 select SYS_SUPPORTS_HOTPLUG_CPU 498 select SYS_SUPPORTS_NUMA 499 select SYS_SUPPORTS_64BIT_KERNEL 500 select SYS_SUPPORTS_HIGHMEM 501 select SYS_SUPPORTS_LITTLE_ENDIAN 502 select SYS_SUPPORTS_ZBOOT 503 select SYS_SUPPORTS_RELOCATABLE 504 select ZONE_DMA32 505 select COMMON_CLK 506 select USE_OF 507 select BUILTIN_DTB 508 select PCI_HOST_GENERIC 509 help 510 This enables the support of Loongson-2/3 family of machines. 511 512 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 513 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 514 and Loongson-2F which will be removed), developed by the Institute 515 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 516 517config MACH_PISTACHIO 518 bool "IMG Pistachio SoC based boards" 519 select BOOT_ELF32 520 select BOOT_RAW 521 select CEVT_R4K 522 select CLKSRC_MIPS_GIC 523 select COMMON_CLK 524 select CSRC_R4K 525 select DMA_NONCOHERENT 526 select GPIOLIB 527 select IRQ_MIPS_CPU 528 select MFD_SYSCON 529 select MIPS_CPU_SCACHE 530 select MIPS_GIC 531 select PINCTRL 532 select REGULATOR 533 select SYS_HAS_CPU_MIPS32_R2 534 select SYS_SUPPORTS_32BIT_KERNEL 535 select SYS_SUPPORTS_LITTLE_ENDIAN 536 select SYS_SUPPORTS_MIPS_CPS 537 select SYS_SUPPORTS_MULTITHREADING 538 select SYS_SUPPORTS_RELOCATABLE 539 select SYS_SUPPORTS_ZBOOT 540 select SYS_HAS_EARLY_PRINTK 541 select USE_GENERIC_EARLY_PRINTK_8250 542 select USE_OF 543 help 544 This enables support for the IMG Pistachio SoC platform. 545 546config MIPS_MALTA 547 bool "MIPS Malta board" 548 select ARCH_MAY_HAVE_PC_FDC 549 select ARCH_MIGHT_HAVE_PC_PARPORT 550 select ARCH_MIGHT_HAVE_PC_SERIO 551 select BOOT_ELF32 552 select BOOT_RAW 553 select BUILTIN_DTB 554 select CEVT_R4K 555 select CLKSRC_MIPS_GIC 556 select COMMON_CLK 557 select CSRC_R4K 558 select DMA_NONCOHERENT 559 select GENERIC_ISA_DMA 560 select HAVE_PCSPKR_PLATFORM 561 select HAVE_PCI 562 select I8253 563 select I8259 564 select IRQ_MIPS_CPU 565 select MIPS_BONITO64 566 select MIPS_CPU_SCACHE 567 select MIPS_GIC 568 select MIPS_L1_CACHE_SHIFT_6 569 select MIPS_MSC 570 select PCI_GT64XXX_PCI0 571 select SMP_UP if SMP 572 select SWAP_IO_SPACE 573 select SYS_HAS_CPU_MIPS32_R1 574 select SYS_HAS_CPU_MIPS32_R2 575 select SYS_HAS_CPU_MIPS32_R3_5 576 select SYS_HAS_CPU_MIPS32_R5 577 select SYS_HAS_CPU_MIPS32_R6 578 select SYS_HAS_CPU_MIPS64_R1 579 select SYS_HAS_CPU_MIPS64_R2 580 select SYS_HAS_CPU_MIPS64_R6 581 select SYS_HAS_CPU_NEVADA 582 select SYS_HAS_CPU_RM7000 583 select SYS_SUPPORTS_32BIT_KERNEL 584 select SYS_SUPPORTS_64BIT_KERNEL 585 select SYS_SUPPORTS_BIG_ENDIAN 586 select SYS_SUPPORTS_HIGHMEM 587 select SYS_SUPPORTS_LITTLE_ENDIAN 588 select SYS_SUPPORTS_MICROMIPS 589 select SYS_SUPPORTS_MIPS16 590 select SYS_SUPPORTS_MIPS_CMP 591 select SYS_SUPPORTS_MIPS_CPS 592 select SYS_SUPPORTS_MULTITHREADING 593 select SYS_SUPPORTS_RELOCATABLE 594 select SYS_SUPPORTS_SMARTMIPS 595 select SYS_SUPPORTS_VPE_LOADER 596 select SYS_SUPPORTS_ZBOOT 597 select USE_OF 598 select WAR_ICACHE_REFILLS 599 select ZONE_DMA32 if 64BIT 600 help 601 This enables support for the MIPS Technologies Malta evaluation 602 board. 603 604config MACH_PIC32 605 bool "Microchip PIC32 Family" 606 help 607 This enables support for the Microchip PIC32 family of platforms. 608 609 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 610 microcontrollers. 611 612config MACH_VR41XX 613 bool "NEC VR4100 series based machines" 614 select CEVT_R4K 615 select CSRC_R4K 616 select SYS_HAS_CPU_VR41XX 617 select SYS_SUPPORTS_MIPS16 618 select GPIOLIB 619 620config MACH_NINTENDO64 621 bool "Nintendo 64 console" 622 select CEVT_R4K 623 select CSRC_R4K 624 select SYS_HAS_CPU_R4300 625 select SYS_SUPPORTS_BIG_ENDIAN 626 select SYS_SUPPORTS_ZBOOT 627 select SYS_SUPPORTS_32BIT_KERNEL 628 select SYS_SUPPORTS_64BIT_KERNEL 629 select DMA_NONCOHERENT 630 select IRQ_MIPS_CPU 631 632config RALINK 633 bool "Ralink based machines" 634 select CEVT_R4K 635 select COMMON_CLK 636 select CSRC_R4K 637 select BOOT_RAW 638 select DMA_NONCOHERENT 639 select IRQ_MIPS_CPU 640 select USE_OF 641 select SYS_HAS_CPU_MIPS32_R1 642 select SYS_HAS_CPU_MIPS32_R2 643 select SYS_SUPPORTS_32BIT_KERNEL 644 select SYS_SUPPORTS_LITTLE_ENDIAN 645 select SYS_SUPPORTS_MIPS16 646 select SYS_SUPPORTS_ZBOOT 647 select SYS_HAS_EARLY_PRINTK 648 select ARCH_HAS_RESET_CONTROLLER 649 select RESET_CONTROLLER 650 651config MACH_REALTEK_RTL 652 bool "Realtek RTL838x/RTL839x based machines" 653 select MIPS_GENERIC 654 select DMA_NONCOHERENT 655 select IRQ_MIPS_CPU 656 select CSRC_R4K 657 select CEVT_R4K 658 select SYS_HAS_CPU_MIPS32_R1 659 select SYS_HAS_CPU_MIPS32_R2 660 select SYS_SUPPORTS_BIG_ENDIAN 661 select SYS_SUPPORTS_32BIT_KERNEL 662 select SYS_SUPPORTS_MIPS16 663 select SYS_SUPPORTS_MULTITHREADING 664 select SYS_SUPPORTS_VPE_LOADER 665 select SYS_HAS_EARLY_PRINTK 666 select SYS_HAS_EARLY_PRINTK_8250 667 select USE_GENERIC_EARLY_PRINTK_8250 668 select BOOT_RAW 669 select PINCTRL 670 select USE_OF 671 672config SGI_IP22 673 bool "SGI IP22 (Indy/Indigo2)" 674 select ARC_MEMORY 675 select ARC_PROMLIB 676 select FW_ARC 677 select FW_ARC32 678 select ARCH_MIGHT_HAVE_PC_SERIO 679 select BOOT_ELF32 680 select CEVT_R4K 681 select CSRC_R4K 682 select DEFAULT_SGI_PARTITION 683 select DMA_NONCOHERENT 684 select HAVE_EISA 685 select I8253 686 select I8259 687 select IP22_CPU_SCACHE 688 select IRQ_MIPS_CPU 689 select GENERIC_ISA_DMA_SUPPORT_BROKEN 690 select SGI_HAS_I8042 691 select SGI_HAS_INDYDOG 692 select SGI_HAS_HAL2 693 select SGI_HAS_SEEQ 694 select SGI_HAS_WD93 695 select SGI_HAS_ZILOG 696 select SWAP_IO_SPACE 697 select SYS_HAS_CPU_R4X00 698 select SYS_HAS_CPU_R5000 699 select SYS_HAS_EARLY_PRINTK 700 select SYS_SUPPORTS_32BIT_KERNEL 701 select SYS_SUPPORTS_64BIT_KERNEL 702 select SYS_SUPPORTS_BIG_ENDIAN 703 select WAR_R4600_V1_INDEX_ICACHEOP 704 select WAR_R4600_V1_HIT_CACHEOP 705 select WAR_R4600_V2_HIT_CACHEOP 706 select MIPS_L1_CACHE_SHIFT_7 707 help 708 This are the SGI Indy, Challenge S and Indigo2, as well as certain 709 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 710 that runs on these, say Y here. 711 712config SGI_IP27 713 bool "SGI IP27 (Origin200/2000)" 714 select ARCH_HAS_PHYS_TO_DMA 715 select ARCH_SPARSEMEM_ENABLE 716 select FW_ARC 717 select FW_ARC64 718 select ARC_CMDLINE_ONLY 719 select BOOT_ELF64 720 select DEFAULT_SGI_PARTITION 721 select FORCE_PCI 722 select SYS_HAS_EARLY_PRINTK 723 select HAVE_PCI 724 select IRQ_MIPS_CPU 725 select IRQ_DOMAIN_HIERARCHY 726 select NR_CPUS_DEFAULT_64 727 select PCI_DRIVERS_GENERIC 728 select PCI_XTALK_BRIDGE 729 select SYS_HAS_CPU_R10000 730 select SYS_SUPPORTS_64BIT_KERNEL 731 select SYS_SUPPORTS_BIG_ENDIAN 732 select SYS_SUPPORTS_NUMA 733 select SYS_SUPPORTS_SMP 734 select WAR_R10000_LLSC 735 select MIPS_L1_CACHE_SHIFT_7 736 select NUMA 737 help 738 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 739 workstations. To compile a Linux kernel that runs on these, say Y 740 here. 741 742config SGI_IP28 743 bool "SGI IP28 (Indigo2 R10k)" 744 select ARC_MEMORY 745 select ARC_PROMLIB 746 select FW_ARC 747 select FW_ARC64 748 select ARCH_MIGHT_HAVE_PC_SERIO 749 select BOOT_ELF64 750 select CEVT_R4K 751 select CSRC_R4K 752 select DEFAULT_SGI_PARTITION 753 select DMA_NONCOHERENT 754 select GENERIC_ISA_DMA_SUPPORT_BROKEN 755 select IRQ_MIPS_CPU 756 select HAVE_EISA 757 select I8253 758 select I8259 759 select SGI_HAS_I8042 760 select SGI_HAS_INDYDOG 761 select SGI_HAS_HAL2 762 select SGI_HAS_SEEQ 763 select SGI_HAS_WD93 764 select SGI_HAS_ZILOG 765 select SWAP_IO_SPACE 766 select SYS_HAS_CPU_R10000 767 select SYS_HAS_EARLY_PRINTK 768 select SYS_SUPPORTS_64BIT_KERNEL 769 select SYS_SUPPORTS_BIG_ENDIAN 770 select WAR_R10000_LLSC 771 select MIPS_L1_CACHE_SHIFT_7 772 help 773 This is the SGI Indigo2 with R10000 processor. To compile a Linux 774 kernel that runs on these, say Y here. 775 776config SGI_IP30 777 bool "SGI IP30 (Octane/Octane2)" 778 select ARCH_HAS_PHYS_TO_DMA 779 select FW_ARC 780 select FW_ARC64 781 select BOOT_ELF64 782 select CEVT_R4K 783 select CSRC_R4K 784 select FORCE_PCI 785 select SYNC_R4K if SMP 786 select ZONE_DMA32 787 select HAVE_PCI 788 select IRQ_MIPS_CPU 789 select IRQ_DOMAIN_HIERARCHY 790 select NR_CPUS_DEFAULT_2 791 select PCI_DRIVERS_GENERIC 792 select PCI_XTALK_BRIDGE 793 select SYS_HAS_EARLY_PRINTK 794 select SYS_HAS_CPU_R10000 795 select SYS_SUPPORTS_64BIT_KERNEL 796 select SYS_SUPPORTS_BIG_ENDIAN 797 select SYS_SUPPORTS_SMP 798 select WAR_R10000_LLSC 799 select MIPS_L1_CACHE_SHIFT_7 800 select ARC_MEMORY 801 help 802 These are the SGI Octane and Octane2 graphics workstations. To 803 compile a Linux kernel that runs on these, say Y here. 804 805config SGI_IP32 806 bool "SGI IP32 (O2)" 807 select ARC_MEMORY 808 select ARC_PROMLIB 809 select ARCH_HAS_PHYS_TO_DMA 810 select FW_ARC 811 select FW_ARC32 812 select BOOT_ELF32 813 select CEVT_R4K 814 select CSRC_R4K 815 select DMA_NONCOHERENT 816 select HAVE_PCI 817 select IRQ_MIPS_CPU 818 select R5000_CPU_SCACHE 819 select RM7000_CPU_SCACHE 820 select SYS_HAS_CPU_R5000 821 select SYS_HAS_CPU_R10000 if BROKEN 822 select SYS_HAS_CPU_RM7000 823 select SYS_HAS_CPU_NEVADA 824 select SYS_SUPPORTS_64BIT_KERNEL 825 select SYS_SUPPORTS_BIG_ENDIAN 826 select WAR_ICACHE_REFILLS 827 help 828 If you want this kernel to run on SGI O2 workstation, say Y here. 829 830config SIBYTE_CRHINE 831 bool "Sibyte BCM91120C-CRhine" 832 select BOOT_ELF32 833 select SIBYTE_BCM1120 834 select SWAP_IO_SPACE 835 select SYS_HAS_CPU_SB1 836 select SYS_SUPPORTS_BIG_ENDIAN 837 select SYS_SUPPORTS_LITTLE_ENDIAN 838 839config SIBYTE_CARMEL 840 bool "Sibyte BCM91120x-Carmel" 841 select BOOT_ELF32 842 select SIBYTE_BCM1120 843 select SWAP_IO_SPACE 844 select SYS_HAS_CPU_SB1 845 select SYS_SUPPORTS_BIG_ENDIAN 846 select SYS_SUPPORTS_LITTLE_ENDIAN 847 848config SIBYTE_CRHONE 849 bool "Sibyte BCM91125C-CRhone" 850 select BOOT_ELF32 851 select SIBYTE_BCM1125 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 858config SIBYTE_RHONE 859 bool "Sibyte BCM91125E-Rhone" 860 select BOOT_ELF32 861 select SIBYTE_BCM1125H 862 select SWAP_IO_SPACE 863 select SYS_HAS_CPU_SB1 864 select SYS_SUPPORTS_BIG_ENDIAN 865 select SYS_SUPPORTS_LITTLE_ENDIAN 866 867config SIBYTE_SWARM 868 bool "Sibyte BCM91250A-SWARM" 869 select BOOT_ELF32 870 select HAVE_PATA_PLATFORM 871 select SIBYTE_SB1250 872 select SWAP_IO_SPACE 873 select SYS_HAS_CPU_SB1 874 select SYS_SUPPORTS_BIG_ENDIAN 875 select SYS_SUPPORTS_HIGHMEM 876 select SYS_SUPPORTS_LITTLE_ENDIAN 877 select ZONE_DMA32 if 64BIT 878 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 879 880config SIBYTE_LITTLESUR 881 bool "Sibyte BCM91250C2-LittleSur" 882 select BOOT_ELF32 883 select HAVE_PATA_PLATFORM 884 select SIBYTE_SB1250 885 select SWAP_IO_SPACE 886 select SYS_HAS_CPU_SB1 887 select SYS_SUPPORTS_BIG_ENDIAN 888 select SYS_SUPPORTS_HIGHMEM 889 select SYS_SUPPORTS_LITTLE_ENDIAN 890 select ZONE_DMA32 if 64BIT 891 892config SIBYTE_SENTOSA 893 bool "Sibyte BCM91250E-Sentosa" 894 select BOOT_ELF32 895 select SIBYTE_SB1250 896 select SWAP_IO_SPACE 897 select SYS_HAS_CPU_SB1 898 select SYS_SUPPORTS_BIG_ENDIAN 899 select SYS_SUPPORTS_LITTLE_ENDIAN 900 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 901 902config SIBYTE_BIGSUR 903 bool "Sibyte BCM91480B-BigSur" 904 select BOOT_ELF32 905 select NR_CPUS_DEFAULT_4 906 select SIBYTE_BCM1x80 907 select SWAP_IO_SPACE 908 select SYS_HAS_CPU_SB1 909 select SYS_SUPPORTS_BIG_ENDIAN 910 select SYS_SUPPORTS_HIGHMEM 911 select SYS_SUPPORTS_LITTLE_ENDIAN 912 select ZONE_DMA32 if 64BIT 913 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 914 915config SNI_RM 916 bool "SNI RM200/300/400" 917 select ARC_MEMORY 918 select ARC_PROMLIB 919 select FW_ARC if CPU_LITTLE_ENDIAN 920 select FW_ARC32 if CPU_LITTLE_ENDIAN 921 select FW_SNIPROM if CPU_BIG_ENDIAN 922 select ARCH_MAY_HAVE_PC_FDC 923 select ARCH_MIGHT_HAVE_PC_PARPORT 924 select ARCH_MIGHT_HAVE_PC_SERIO 925 select BOOT_ELF32 926 select CEVT_R4K 927 select CSRC_R4K 928 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 929 select DMA_NONCOHERENT 930 select GENERIC_ISA_DMA 931 select HAVE_EISA 932 select HAVE_PCSPKR_PLATFORM 933 select HAVE_PCI 934 select IRQ_MIPS_CPU 935 select I8253 936 select I8259 937 select ISA 938 select MIPS_L1_CACHE_SHIFT_6 939 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 940 select SYS_HAS_CPU_R4X00 941 select SYS_HAS_CPU_R5000 942 select SYS_HAS_CPU_R10000 943 select R5000_CPU_SCACHE 944 select SYS_HAS_EARLY_PRINTK 945 select SYS_SUPPORTS_32BIT_KERNEL 946 select SYS_SUPPORTS_64BIT_KERNEL 947 select SYS_SUPPORTS_BIG_ENDIAN 948 select SYS_SUPPORTS_HIGHMEM 949 select SYS_SUPPORTS_LITTLE_ENDIAN 950 select WAR_R4600_V2_HIT_CACHEOP 951 help 952 The SNI RM200/300/400 are MIPS-based machines manufactured by 953 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 954 Technology and now in turn merged with Fujitsu. Say Y here to 955 support this machine type. 956 957config MACH_TX39XX 958 bool "Toshiba TX39 series based machines" 959 960config MACH_TX49XX 961 bool "Toshiba TX49 series based machines" 962 select WAR_TX49XX_ICACHE_INDEX_INV 963 964config MIKROTIK_RB532 965 bool "Mikrotik RB532 boards" 966 select CEVT_R4K 967 select CSRC_R4K 968 select DMA_NONCOHERENT 969 select HAVE_PCI 970 select IRQ_MIPS_CPU 971 select SYS_HAS_CPU_MIPS32_R1 972 select SYS_SUPPORTS_32BIT_KERNEL 973 select SYS_SUPPORTS_LITTLE_ENDIAN 974 select SWAP_IO_SPACE 975 select BOOT_RAW 976 select GPIOLIB 977 select MIPS_L1_CACHE_SHIFT_4 978 help 979 Support the Mikrotik(tm) RouterBoard 532 series, 980 based on the IDT RC32434 SoC. 981 982config CAVIUM_OCTEON_SOC 983 bool "Cavium Networks Octeon SoC based boards" 984 select CEVT_R4K 985 select ARCH_HAS_PHYS_TO_DMA 986 select HAVE_RAPIDIO 987 select PHYS_ADDR_T_64BIT 988 select SYS_SUPPORTS_64BIT_KERNEL 989 select SYS_SUPPORTS_BIG_ENDIAN 990 select EDAC_SUPPORT 991 select EDAC_ATOMIC_SCRUB 992 select SYS_SUPPORTS_LITTLE_ENDIAN 993 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 994 select SYS_HAS_EARLY_PRINTK 995 select SYS_HAS_CPU_CAVIUM_OCTEON 996 select HAVE_PCI 997 select HAVE_PLAT_DELAY 998 select HAVE_PLAT_FW_INIT_CMDLINE 999 select HAVE_PLAT_MEMCPY 1000 select ZONE_DMA32 1001 select GPIOLIB 1002 select USE_OF 1003 select ARCH_SPARSEMEM_ENABLE 1004 select SYS_SUPPORTS_SMP 1005 select NR_CPUS_DEFAULT_64 1006 select MIPS_NR_CPU_NR_MAP_1024 1007 select BUILTIN_DTB 1008 select MTD 1009 select MTD_COMPLEX_MAPPINGS 1010 select SWIOTLB 1011 select SYS_SUPPORTS_RELOCATABLE 1012 help 1013 This option supports all of the Octeon reference boards from Cavium 1014 Networks. It builds a kernel that dynamically determines the Octeon 1015 CPU type and supports all known board reference implementations. 1016 Some of the supported boards are: 1017 EBT3000 1018 EBH3000 1019 EBH3100 1020 Thunder 1021 Kodama 1022 Hikari 1023 Say Y here for most Octeon reference boards. 1024 1025config NLM_XLR_BOARD 1026 bool "Netlogic XLR/XLS based systems" 1027 select BOOT_ELF32 1028 select NLM_COMMON 1029 select SYS_HAS_CPU_XLR 1030 select SYS_SUPPORTS_SMP 1031 select HAVE_PCI 1032 select SWAP_IO_SPACE 1033 select SYS_SUPPORTS_32BIT_KERNEL 1034 select SYS_SUPPORTS_64BIT_KERNEL 1035 select PHYS_ADDR_T_64BIT 1036 select SYS_SUPPORTS_BIG_ENDIAN 1037 select SYS_SUPPORTS_HIGHMEM 1038 select NR_CPUS_DEFAULT_32 1039 select CEVT_R4K 1040 select CSRC_R4K 1041 select IRQ_MIPS_CPU 1042 select ZONE_DMA32 if 64BIT 1043 select SYNC_R4K 1044 select SYS_HAS_EARLY_PRINTK 1045 select SYS_SUPPORTS_ZBOOT 1046 select SYS_SUPPORTS_ZBOOT_UART16550 1047 help 1048 Support for systems based on Netlogic XLR and XLS processors. 1049 Say Y here if you have a XLR or XLS based board. 1050 1051config NLM_XLP_BOARD 1052 bool "Netlogic XLP based systems" 1053 select BOOT_ELF32 1054 select NLM_COMMON 1055 select SYS_HAS_CPU_XLP 1056 select SYS_SUPPORTS_SMP 1057 select HAVE_PCI 1058 select SYS_SUPPORTS_32BIT_KERNEL 1059 select SYS_SUPPORTS_64BIT_KERNEL 1060 select PHYS_ADDR_T_64BIT 1061 select GPIOLIB 1062 select SYS_SUPPORTS_BIG_ENDIAN 1063 select SYS_SUPPORTS_LITTLE_ENDIAN 1064 select SYS_SUPPORTS_HIGHMEM 1065 select NR_CPUS_DEFAULT_32 1066 select CEVT_R4K 1067 select CSRC_R4K 1068 select IRQ_MIPS_CPU 1069 select ZONE_DMA32 if 64BIT 1070 select SYNC_R4K 1071 select SYS_HAS_EARLY_PRINTK 1072 select USE_OF 1073 select SYS_SUPPORTS_ZBOOT 1074 select SYS_SUPPORTS_ZBOOT_UART16550 1075 help 1076 This board is based on Netlogic XLP Processor. 1077 Say Y here if you have a XLP based board. 1078 1079endchoice 1080 1081source "arch/mips/alchemy/Kconfig" 1082source "arch/mips/ath25/Kconfig" 1083source "arch/mips/ath79/Kconfig" 1084source "arch/mips/bcm47xx/Kconfig" 1085source "arch/mips/bcm63xx/Kconfig" 1086source "arch/mips/bmips/Kconfig" 1087source "arch/mips/generic/Kconfig" 1088source "arch/mips/ingenic/Kconfig" 1089source "arch/mips/jazz/Kconfig" 1090source "arch/mips/lantiq/Kconfig" 1091source "arch/mips/pic32/Kconfig" 1092source "arch/mips/pistachio/Kconfig" 1093source "arch/mips/ralink/Kconfig" 1094source "arch/mips/sgi-ip27/Kconfig" 1095source "arch/mips/sibyte/Kconfig" 1096source "arch/mips/txx9/Kconfig" 1097source "arch/mips/vr41xx/Kconfig" 1098source "arch/mips/cavium-octeon/Kconfig" 1099source "arch/mips/loongson2ef/Kconfig" 1100source "arch/mips/loongson32/Kconfig" 1101source "arch/mips/loongson64/Kconfig" 1102source "arch/mips/netlogic/Kconfig" 1103 1104endmenu 1105 1106config GENERIC_HWEIGHT 1107 bool 1108 default y 1109 1110config GENERIC_CALIBRATE_DELAY 1111 bool 1112 default y 1113 1114config SCHED_OMIT_FRAME_POINTER 1115 bool 1116 default y 1117 1118# 1119# Select some configuration options automatically based on user selections. 1120# 1121config FW_ARC 1122 bool 1123 1124config ARCH_MAY_HAVE_PC_FDC 1125 bool 1126 1127config BOOT_RAW 1128 bool 1129 1130config CEVT_BCM1480 1131 bool 1132 1133config CEVT_DS1287 1134 bool 1135 1136config CEVT_GT641XX 1137 bool 1138 1139config CEVT_R4K 1140 bool 1141 1142config CEVT_SB1250 1143 bool 1144 1145config CEVT_TXX9 1146 bool 1147 1148config CSRC_BCM1480 1149 bool 1150 1151config CSRC_IOASIC 1152 bool 1153 1154config CSRC_R4K 1155 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1156 bool 1157 1158config CSRC_SB1250 1159 bool 1160 1161config MIPS_CLOCK_VSYSCALL 1162 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1163 1164config GPIO_TXX9 1165 select GPIOLIB 1166 bool 1167 1168config FW_CFE 1169 bool 1170 1171config ARCH_SUPPORTS_UPROBES 1172 bool 1173 1174config DMA_PERDEV_COHERENT 1175 bool 1176 select ARCH_HAS_SETUP_DMA_OPS 1177 select DMA_NONCOHERENT 1178 1179config DMA_NONCOHERENT 1180 bool 1181 # 1182 # MIPS allows mixing "slightly different" Cacheability and Coherency 1183 # Attribute bits. It is believed that the uncached access through 1184 # KSEG1 and the implementation specific "uncached accelerated" used 1185 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1186 # significant advantages. 1187 # 1188 select ARCH_HAS_DMA_WRITE_COMBINE 1189 select ARCH_HAS_DMA_PREP_COHERENT 1190 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1191 select ARCH_HAS_DMA_SET_UNCACHED 1192 select DMA_NONCOHERENT_MMAP 1193 select NEED_DMA_MAP_STATE 1194 1195config SYS_HAS_EARLY_PRINTK 1196 bool 1197 1198config SYS_SUPPORTS_HOTPLUG_CPU 1199 bool 1200 1201config MIPS_BONITO64 1202 bool 1203 1204config MIPS_MSC 1205 bool 1206 1207config SYNC_R4K 1208 bool 1209 1210config NO_IOPORT_MAP 1211 def_bool n 1212 1213config GENERIC_CSUM 1214 def_bool CPU_NO_LOAD_STORE_LR 1215 1216config GENERIC_ISA_DMA 1217 bool 1218 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1219 select ISA_DMA_API 1220 1221config GENERIC_ISA_DMA_SUPPORT_BROKEN 1222 bool 1223 select GENERIC_ISA_DMA 1224 1225config HAVE_PLAT_DELAY 1226 bool 1227 1228config HAVE_PLAT_FW_INIT_CMDLINE 1229 bool 1230 1231config HAVE_PLAT_MEMCPY 1232 bool 1233 1234config ISA_DMA_API 1235 bool 1236 1237config SYS_SUPPORTS_RELOCATABLE 1238 bool 1239 help 1240 Selected if the platform supports relocating the kernel. 1241 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1242 to allow access to command line and entropy sources. 1243 1244config MIPS_CBPF_JIT 1245 def_bool y 1246 depends on BPF_JIT && HAVE_CBPF_JIT 1247 1248config MIPS_EBPF_JIT 1249 def_bool y 1250 depends on BPF_JIT && HAVE_EBPF_JIT 1251 1252 1253# 1254# Endianness selection. Sufficiently obscure so many users don't know what to 1255# answer,so we try hard to limit the available choices. Also the use of a 1256# choice statement should be more obvious to the user. 1257# 1258choice 1259 prompt "Endianness selection" 1260 help 1261 Some MIPS machines can be configured for either little or big endian 1262 byte order. These modes require different kernels and a different 1263 Linux distribution. In general there is one preferred byteorder for a 1264 particular system but some systems are just as commonly used in the 1265 one or the other endianness. 1266 1267config CPU_BIG_ENDIAN 1268 bool "Big endian" 1269 depends on SYS_SUPPORTS_BIG_ENDIAN 1270 1271config CPU_LITTLE_ENDIAN 1272 bool "Little endian" 1273 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1274 1275endchoice 1276 1277config EXPORT_UASM 1278 bool 1279 1280config SYS_SUPPORTS_APM_EMULATION 1281 bool 1282 1283config SYS_SUPPORTS_BIG_ENDIAN 1284 bool 1285 1286config SYS_SUPPORTS_LITTLE_ENDIAN 1287 bool 1288 1289config MIPS_HUGE_TLB_SUPPORT 1290 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1291 1292config IRQ_MSP_SLP 1293 bool 1294 1295config IRQ_MSP_CIC 1296 bool 1297 1298config IRQ_TXX9 1299 bool 1300 1301config IRQ_GT641XX 1302 bool 1303 1304config PCI_GT64XXX_PCI0 1305 bool 1306 1307config PCI_XTALK_BRIDGE 1308 bool 1309 1310config NO_EXCEPT_FILL 1311 bool 1312 1313config MIPS_SPRAM 1314 bool 1315 1316config SWAP_IO_SPACE 1317 bool 1318 1319config SGI_HAS_INDYDOG 1320 bool 1321 1322config SGI_HAS_HAL2 1323 bool 1324 1325config SGI_HAS_SEEQ 1326 bool 1327 1328config SGI_HAS_WD93 1329 bool 1330 1331config SGI_HAS_ZILOG 1332 bool 1333 1334config SGI_HAS_I8042 1335 bool 1336 1337config DEFAULT_SGI_PARTITION 1338 bool 1339 1340config FW_ARC32 1341 bool 1342 1343config FW_SNIPROM 1344 bool 1345 1346config BOOT_ELF32 1347 bool 1348 1349config MIPS_L1_CACHE_SHIFT_4 1350 bool 1351 1352config MIPS_L1_CACHE_SHIFT_5 1353 bool 1354 1355config MIPS_L1_CACHE_SHIFT_6 1356 bool 1357 1358config MIPS_L1_CACHE_SHIFT_7 1359 bool 1360 1361config MIPS_L1_CACHE_SHIFT 1362 int 1363 default "7" if MIPS_L1_CACHE_SHIFT_7 1364 default "6" if MIPS_L1_CACHE_SHIFT_6 1365 default "5" if MIPS_L1_CACHE_SHIFT_5 1366 default "4" if MIPS_L1_CACHE_SHIFT_4 1367 default "5" 1368 1369config ARC_CMDLINE_ONLY 1370 bool 1371 1372config ARC_CONSOLE 1373 bool "ARC console support" 1374 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1375 1376config ARC_MEMORY 1377 bool 1378 1379config ARC_PROMLIB 1380 bool 1381 1382config FW_ARC64 1383 bool 1384 1385config BOOT_ELF64 1386 bool 1387 1388menu "CPU selection" 1389 1390choice 1391 prompt "CPU type" 1392 default CPU_R4X00 1393 1394config CPU_LOONGSON64 1395 bool "Loongson 64-bit CPU" 1396 depends on SYS_HAS_CPU_LOONGSON64 1397 select ARCH_HAS_PHYS_TO_DMA 1398 select CPU_MIPSR2 1399 select CPU_HAS_PREFETCH 1400 select CPU_SUPPORTS_64BIT_KERNEL 1401 select CPU_SUPPORTS_HIGHMEM 1402 select CPU_SUPPORTS_HUGEPAGES 1403 select CPU_SUPPORTS_MSA 1404 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1405 select CPU_MIPSR2_IRQ_VI 1406 select WEAK_ORDERING 1407 select WEAK_REORDERING_BEYOND_LLSC 1408 select MIPS_ASID_BITS_VARIABLE 1409 select MIPS_PGD_C0_CONTEXT 1410 select MIPS_L1_CACHE_SHIFT_6 1411 select GPIOLIB 1412 select SWIOTLB 1413 select HAVE_KVM 1414 help 1415 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1416 cores implements the MIPS64R2 instruction set with many extensions, 1417 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1418 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1419 Loongson-2E/2F is not covered here and will be removed in future. 1420 1421config LOONGSON3_ENHANCEMENT 1422 bool "New Loongson-3 CPU Enhancements" 1423 default n 1424 depends on CPU_LOONGSON64 1425 help 1426 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1427 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1428 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1429 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1430 Fast TLB refill support, etc. 1431 1432 This option enable those enhancements which are not probed at run 1433 time. If you want a generic kernel to run on all Loongson 3 machines, 1434 please say 'N' here. If you want a high-performance kernel to run on 1435 new Loongson-3 machines only, please say 'Y' here. 1436 1437config CPU_LOONGSON3_WORKAROUNDS 1438 bool "Old Loongson-3 LLSC Workarounds" 1439 default y if SMP 1440 depends on CPU_LOONGSON64 1441 help 1442 Loongson-3 processors have the llsc issues which require workarounds. 1443 Without workarounds the system may hang unexpectedly. 1444 1445 Newer Loongson-3 will fix these issues and no workarounds are needed. 1446 The workarounds have no significant side effect on them but may 1447 decrease the performance of the system so this option should be 1448 disabled unless the kernel is intended to be run on old systems. 1449 1450 If unsure, please say Y. 1451 1452config CPU_LOONGSON3_CPUCFG_EMULATION 1453 bool "Emulate the CPUCFG instruction on older Loongson cores" 1454 default y 1455 depends on CPU_LOONGSON64 1456 help 1457 Loongson-3A R4 and newer have the CPUCFG instruction available for 1458 userland to query CPU capabilities, much like CPUID on x86. This 1459 option provides emulation of the instruction on older Loongson 1460 cores, back to Loongson-3A1000. 1461 1462 If unsure, please say Y. 1463 1464config CPU_LOONGSON2E 1465 bool "Loongson 2E" 1466 depends on SYS_HAS_CPU_LOONGSON2E 1467 select CPU_LOONGSON2EF 1468 help 1469 The Loongson 2E processor implements the MIPS III instruction set 1470 with many extensions. 1471 1472 It has an internal FPGA northbridge, which is compatible to 1473 bonito64. 1474 1475config CPU_LOONGSON2F 1476 bool "Loongson 2F" 1477 depends on SYS_HAS_CPU_LOONGSON2F 1478 select CPU_LOONGSON2EF 1479 select GPIOLIB 1480 help 1481 The Loongson 2F processor implements the MIPS III instruction set 1482 with many extensions. 1483 1484 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1485 have a similar programming interface with FPGA northbridge used in 1486 Loongson2E. 1487 1488config CPU_LOONGSON1B 1489 bool "Loongson 1B" 1490 depends on SYS_HAS_CPU_LOONGSON1B 1491 select CPU_LOONGSON32 1492 select LEDS_GPIO_REGISTER 1493 help 1494 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1495 Release 1 instruction set and part of the MIPS32 Release 2 1496 instruction set. 1497 1498config CPU_LOONGSON1C 1499 bool "Loongson 1C" 1500 depends on SYS_HAS_CPU_LOONGSON1C 1501 select CPU_LOONGSON32 1502 select LEDS_GPIO_REGISTER 1503 help 1504 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1505 Release 1 instruction set and part of the MIPS32 Release 2 1506 instruction set. 1507 1508config CPU_MIPS32_R1 1509 bool "MIPS32 Release 1" 1510 depends on SYS_HAS_CPU_MIPS32_R1 1511 select CPU_HAS_PREFETCH 1512 select CPU_SUPPORTS_32BIT_KERNEL 1513 select CPU_SUPPORTS_HIGHMEM 1514 help 1515 Choose this option to build a kernel for release 1 or later of the 1516 MIPS32 architecture. Most modern embedded systems with a 32-bit 1517 MIPS processor are based on a MIPS32 processor. If you know the 1518 specific type of processor in your system, choose those that one 1519 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1520 Release 2 of the MIPS32 architecture is available since several 1521 years so chances are you even have a MIPS32 Release 2 processor 1522 in which case you should choose CPU_MIPS32_R2 instead for better 1523 performance. 1524 1525config CPU_MIPS32_R2 1526 bool "MIPS32 Release 2" 1527 depends on SYS_HAS_CPU_MIPS32_R2 1528 select CPU_HAS_PREFETCH 1529 select CPU_SUPPORTS_32BIT_KERNEL 1530 select CPU_SUPPORTS_HIGHMEM 1531 select CPU_SUPPORTS_MSA 1532 select HAVE_KVM 1533 help 1534 Choose this option to build a kernel for release 2 or later of the 1535 MIPS32 architecture. Most modern embedded systems with a 32-bit 1536 MIPS processor are based on a MIPS32 processor. If you know the 1537 specific type of processor in your system, choose those that one 1538 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1539 1540config CPU_MIPS32_R5 1541 bool "MIPS32 Release 5" 1542 depends on SYS_HAS_CPU_MIPS32_R5 1543 select CPU_HAS_PREFETCH 1544 select CPU_SUPPORTS_32BIT_KERNEL 1545 select CPU_SUPPORTS_HIGHMEM 1546 select CPU_SUPPORTS_MSA 1547 select HAVE_KVM 1548 select MIPS_O32_FP64_SUPPORT 1549 help 1550 Choose this option to build a kernel for release 5 or later of the 1551 MIPS32 architecture. New MIPS processors, starting with the Warrior 1552 family, are based on a MIPS32r5 processor. If you own an older 1553 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1554 1555config CPU_MIPS32_R6 1556 bool "MIPS32 Release 6" 1557 depends on SYS_HAS_CPU_MIPS32_R6 1558 select CPU_HAS_PREFETCH 1559 select CPU_NO_LOAD_STORE_LR 1560 select CPU_SUPPORTS_32BIT_KERNEL 1561 select CPU_SUPPORTS_HIGHMEM 1562 select CPU_SUPPORTS_MSA 1563 select HAVE_KVM 1564 select MIPS_O32_FP64_SUPPORT 1565 help 1566 Choose this option to build a kernel for release 6 or later of the 1567 MIPS32 architecture. New MIPS processors, starting with the Warrior 1568 family, are based on a MIPS32r6 processor. If you own an older 1569 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1570 1571config CPU_MIPS64_R1 1572 bool "MIPS64 Release 1" 1573 depends on SYS_HAS_CPU_MIPS64_R1 1574 select CPU_HAS_PREFETCH 1575 select CPU_SUPPORTS_32BIT_KERNEL 1576 select CPU_SUPPORTS_64BIT_KERNEL 1577 select CPU_SUPPORTS_HIGHMEM 1578 select CPU_SUPPORTS_HUGEPAGES 1579 help 1580 Choose this option to build a kernel for release 1 or later of the 1581 MIPS64 architecture. Many modern embedded systems with a 64-bit 1582 MIPS processor are based on a MIPS64 processor. If you know the 1583 specific type of processor in your system, choose those that one 1584 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1585 Release 2 of the MIPS64 architecture is available since several 1586 years so chances are you even have a MIPS64 Release 2 processor 1587 in which case you should choose CPU_MIPS64_R2 instead for better 1588 performance. 1589 1590config CPU_MIPS64_R2 1591 bool "MIPS64 Release 2" 1592 depends on SYS_HAS_CPU_MIPS64_R2 1593 select CPU_HAS_PREFETCH 1594 select CPU_SUPPORTS_32BIT_KERNEL 1595 select CPU_SUPPORTS_64BIT_KERNEL 1596 select CPU_SUPPORTS_HIGHMEM 1597 select CPU_SUPPORTS_HUGEPAGES 1598 select CPU_SUPPORTS_MSA 1599 select HAVE_KVM 1600 help 1601 Choose this option to build a kernel for release 2 or later of the 1602 MIPS64 architecture. Many modern embedded systems with a 64-bit 1603 MIPS processor are based on a MIPS64 processor. If you know the 1604 specific type of processor in your system, choose those that one 1605 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1606 1607config CPU_MIPS64_R5 1608 bool "MIPS64 Release 5" 1609 depends on SYS_HAS_CPU_MIPS64_R5 1610 select CPU_HAS_PREFETCH 1611 select CPU_SUPPORTS_32BIT_KERNEL 1612 select CPU_SUPPORTS_64BIT_KERNEL 1613 select CPU_SUPPORTS_HIGHMEM 1614 select CPU_SUPPORTS_HUGEPAGES 1615 select CPU_SUPPORTS_MSA 1616 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1617 select HAVE_KVM 1618 help 1619 Choose this option to build a kernel for release 5 or later of the 1620 MIPS64 architecture. This is a intermediate MIPS architecture 1621 release partly implementing release 6 features. Though there is no 1622 any hardware known to be based on this release. 1623 1624config CPU_MIPS64_R6 1625 bool "MIPS64 Release 6" 1626 depends on SYS_HAS_CPU_MIPS64_R6 1627 select CPU_HAS_PREFETCH 1628 select CPU_NO_LOAD_STORE_LR 1629 select CPU_SUPPORTS_32BIT_KERNEL 1630 select CPU_SUPPORTS_64BIT_KERNEL 1631 select CPU_SUPPORTS_HIGHMEM 1632 select CPU_SUPPORTS_HUGEPAGES 1633 select CPU_SUPPORTS_MSA 1634 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1635 select HAVE_KVM 1636 help 1637 Choose this option to build a kernel for release 6 or later of the 1638 MIPS64 architecture. New MIPS processors, starting with the Warrior 1639 family, are based on a MIPS64r6 processor. If you own an older 1640 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1641 1642config CPU_P5600 1643 bool "MIPS Warrior P5600" 1644 depends on SYS_HAS_CPU_P5600 1645 select CPU_HAS_PREFETCH 1646 select CPU_SUPPORTS_32BIT_KERNEL 1647 select CPU_SUPPORTS_HIGHMEM 1648 select CPU_SUPPORTS_MSA 1649 select CPU_SUPPORTS_CPUFREQ 1650 select CPU_MIPSR2_IRQ_VI 1651 select CPU_MIPSR2_IRQ_EI 1652 select HAVE_KVM 1653 select MIPS_O32_FP64_SUPPORT 1654 help 1655 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1656 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1657 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1658 level features like up to six P5600 calculation cores, CM2 with L2 1659 cache, IOCU/IOMMU (though might be unused depending on the system- 1660 specific IP core configuration), GIC, CPC, virtualisation module, 1661 eJTAG and PDtrace. 1662 1663config CPU_R3000 1664 bool "R3000" 1665 depends on SYS_HAS_CPU_R3000 1666 select CPU_HAS_WB 1667 select CPU_R3K_TLB 1668 select CPU_SUPPORTS_32BIT_KERNEL 1669 select CPU_SUPPORTS_HIGHMEM 1670 help 1671 Please make sure to pick the right CPU type. Linux/MIPS is not 1672 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1673 *not* work on R4000 machines and vice versa. However, since most 1674 of the supported machines have an R4000 (or similar) CPU, R4x00 1675 might be a safe bet. If the resulting kernel does not work, 1676 try to recompile with R3000. 1677 1678config CPU_TX39XX 1679 bool "R39XX" 1680 depends on SYS_HAS_CPU_TX39XX 1681 select CPU_SUPPORTS_32BIT_KERNEL 1682 select CPU_R3K_TLB 1683 1684config CPU_VR41XX 1685 bool "R41xx" 1686 depends on SYS_HAS_CPU_VR41XX 1687 select CPU_SUPPORTS_32BIT_KERNEL 1688 select CPU_SUPPORTS_64BIT_KERNEL 1689 help 1690 The options selects support for the NEC VR4100 series of processors. 1691 Only choose this option if you have one of these processors as a 1692 kernel built with this option will not run on any other type of 1693 processor or vice versa. 1694 1695config CPU_R4300 1696 bool "R4300" 1697 depends on SYS_HAS_CPU_R4300 1698 select CPU_SUPPORTS_32BIT_KERNEL 1699 select CPU_SUPPORTS_64BIT_KERNEL 1700 select CPU_HAS_LOAD_STORE_LR 1701 help 1702 MIPS Technologies R4300-series processors. 1703 1704config CPU_R4X00 1705 bool "R4x00" 1706 depends on SYS_HAS_CPU_R4X00 1707 select CPU_SUPPORTS_32BIT_KERNEL 1708 select CPU_SUPPORTS_64BIT_KERNEL 1709 select CPU_SUPPORTS_HUGEPAGES 1710 help 1711 MIPS Technologies R4000-series processors other than 4300, including 1712 the R4000, R4400, R4600, and 4700. 1713 1714config CPU_TX49XX 1715 bool "R49XX" 1716 depends on SYS_HAS_CPU_TX49XX 1717 select CPU_HAS_PREFETCH 1718 select CPU_SUPPORTS_32BIT_KERNEL 1719 select CPU_SUPPORTS_64BIT_KERNEL 1720 select CPU_SUPPORTS_HUGEPAGES 1721 1722config CPU_R5000 1723 bool "R5000" 1724 depends on SYS_HAS_CPU_R5000 1725 select CPU_SUPPORTS_32BIT_KERNEL 1726 select CPU_SUPPORTS_64BIT_KERNEL 1727 select CPU_SUPPORTS_HUGEPAGES 1728 help 1729 MIPS Technologies R5000-series processors other than the Nevada. 1730 1731config CPU_R5500 1732 bool "R5500" 1733 depends on SYS_HAS_CPU_R5500 1734 select CPU_SUPPORTS_32BIT_KERNEL 1735 select CPU_SUPPORTS_64BIT_KERNEL 1736 select CPU_SUPPORTS_HUGEPAGES 1737 help 1738 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1739 instruction set. 1740 1741config CPU_NEVADA 1742 bool "RM52xx" 1743 depends on SYS_HAS_CPU_NEVADA 1744 select CPU_SUPPORTS_32BIT_KERNEL 1745 select CPU_SUPPORTS_64BIT_KERNEL 1746 select CPU_SUPPORTS_HUGEPAGES 1747 help 1748 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1749 1750config CPU_R10000 1751 bool "R10000" 1752 depends on SYS_HAS_CPU_R10000 1753 select CPU_HAS_PREFETCH 1754 select CPU_SUPPORTS_32BIT_KERNEL 1755 select CPU_SUPPORTS_64BIT_KERNEL 1756 select CPU_SUPPORTS_HIGHMEM 1757 select CPU_SUPPORTS_HUGEPAGES 1758 help 1759 MIPS Technologies R10000-series processors. 1760 1761config CPU_RM7000 1762 bool "RM7000" 1763 depends on SYS_HAS_CPU_RM7000 1764 select CPU_HAS_PREFETCH 1765 select CPU_SUPPORTS_32BIT_KERNEL 1766 select CPU_SUPPORTS_64BIT_KERNEL 1767 select CPU_SUPPORTS_HIGHMEM 1768 select CPU_SUPPORTS_HUGEPAGES 1769 1770config CPU_SB1 1771 bool "SB1" 1772 depends on SYS_HAS_CPU_SB1 1773 select CPU_SUPPORTS_32BIT_KERNEL 1774 select CPU_SUPPORTS_64BIT_KERNEL 1775 select CPU_SUPPORTS_HIGHMEM 1776 select CPU_SUPPORTS_HUGEPAGES 1777 select WEAK_ORDERING 1778 1779config CPU_CAVIUM_OCTEON 1780 bool "Cavium Octeon processor" 1781 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1782 select CPU_HAS_PREFETCH 1783 select CPU_SUPPORTS_64BIT_KERNEL 1784 select WEAK_ORDERING 1785 select CPU_SUPPORTS_HIGHMEM 1786 select CPU_SUPPORTS_HUGEPAGES 1787 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1788 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1789 select MIPS_L1_CACHE_SHIFT_7 1790 select HAVE_KVM 1791 help 1792 The Cavium Octeon processor is a highly integrated chip containing 1793 many ethernet hardware widgets for networking tasks. The processor 1794 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1795 Full details can be found at http://www.caviumnetworks.com. 1796 1797config CPU_BMIPS 1798 bool "Broadcom BMIPS" 1799 depends on SYS_HAS_CPU_BMIPS 1800 select CPU_MIPS32 1801 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1802 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1803 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1804 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1805 select CPU_SUPPORTS_32BIT_KERNEL 1806 select DMA_NONCOHERENT 1807 select IRQ_MIPS_CPU 1808 select SWAP_IO_SPACE 1809 select WEAK_ORDERING 1810 select CPU_SUPPORTS_HIGHMEM 1811 select CPU_HAS_PREFETCH 1812 select CPU_SUPPORTS_CPUFREQ 1813 select MIPS_EXTERNAL_TIMER 1814 help 1815 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1816 1817config CPU_XLR 1818 bool "Netlogic XLR SoC" 1819 depends on SYS_HAS_CPU_XLR 1820 select CPU_SUPPORTS_32BIT_KERNEL 1821 select CPU_SUPPORTS_64BIT_KERNEL 1822 select CPU_SUPPORTS_HIGHMEM 1823 select CPU_SUPPORTS_HUGEPAGES 1824 select WEAK_ORDERING 1825 select WEAK_REORDERING_BEYOND_LLSC 1826 help 1827 Netlogic Microsystems XLR/XLS processors. 1828 1829config CPU_XLP 1830 bool "Netlogic XLP SoC" 1831 depends on SYS_HAS_CPU_XLP 1832 select CPU_SUPPORTS_32BIT_KERNEL 1833 select CPU_SUPPORTS_64BIT_KERNEL 1834 select CPU_SUPPORTS_HIGHMEM 1835 select WEAK_ORDERING 1836 select WEAK_REORDERING_BEYOND_LLSC 1837 select CPU_HAS_PREFETCH 1838 select CPU_MIPSR2 1839 select CPU_SUPPORTS_HUGEPAGES 1840 select MIPS_ASID_BITS_VARIABLE 1841 help 1842 Netlogic Microsystems XLP processors. 1843endchoice 1844 1845config CPU_MIPS32_3_5_FEATURES 1846 bool "MIPS32 Release 3.5 Features" 1847 depends on SYS_HAS_CPU_MIPS32_R3_5 1848 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1849 CPU_P5600 1850 help 1851 Choose this option to build a kernel for release 2 or later of the 1852 MIPS32 architecture including features from the 3.5 release such as 1853 support for Enhanced Virtual Addressing (EVA). 1854 1855config CPU_MIPS32_3_5_EVA 1856 bool "Enhanced Virtual Addressing (EVA)" 1857 depends on CPU_MIPS32_3_5_FEATURES 1858 select EVA 1859 default y 1860 help 1861 Choose this option if you want to enable the Enhanced Virtual 1862 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1863 One of its primary benefits is an increase in the maximum size 1864 of lowmem (up to 3GB). If unsure, say 'N' here. 1865 1866config CPU_MIPS32_R5_FEATURES 1867 bool "MIPS32 Release 5 Features" 1868 depends on SYS_HAS_CPU_MIPS32_R5 1869 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1870 help 1871 Choose this option to build a kernel for release 2 or later of the 1872 MIPS32 architecture including features from release 5 such as 1873 support for Extended Physical Addressing (XPA). 1874 1875config CPU_MIPS32_R5_XPA 1876 bool "Extended Physical Addressing (XPA)" 1877 depends on CPU_MIPS32_R5_FEATURES 1878 depends on !EVA 1879 depends on !PAGE_SIZE_4KB 1880 depends on SYS_SUPPORTS_HIGHMEM 1881 select XPA 1882 select HIGHMEM 1883 select PHYS_ADDR_T_64BIT 1884 default n 1885 help 1886 Choose this option if you want to enable the Extended Physical 1887 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1888 benefit is to increase physical addressing equal to or greater 1889 than 40 bits. Note that this has the side effect of turning on 1890 64-bit addressing which in turn makes the PTEs 64-bit in size. 1891 If unsure, say 'N' here. 1892 1893if CPU_LOONGSON2F 1894config CPU_NOP_WORKAROUNDS 1895 bool 1896 1897config CPU_JUMP_WORKAROUNDS 1898 bool 1899 1900config CPU_LOONGSON2F_WORKAROUNDS 1901 bool "Loongson 2F Workarounds" 1902 default y 1903 select CPU_NOP_WORKAROUNDS 1904 select CPU_JUMP_WORKAROUNDS 1905 help 1906 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1907 require workarounds. Without workarounds the system may hang 1908 unexpectedly. For more information please refer to the gas 1909 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1910 1911 Loongson 2F03 and later have fixed these issues and no workarounds 1912 are needed. The workarounds have no significant side effect on them 1913 but may decrease the performance of the system so this option should 1914 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1915 systems. 1916 1917 If unsure, please say Y. 1918endif # CPU_LOONGSON2F 1919 1920config SYS_SUPPORTS_ZBOOT 1921 bool 1922 select HAVE_KERNEL_GZIP 1923 select HAVE_KERNEL_BZIP2 1924 select HAVE_KERNEL_LZ4 1925 select HAVE_KERNEL_LZMA 1926 select HAVE_KERNEL_LZO 1927 select HAVE_KERNEL_XZ 1928 select HAVE_KERNEL_ZSTD 1929 1930config SYS_SUPPORTS_ZBOOT_UART16550 1931 bool 1932 select SYS_SUPPORTS_ZBOOT 1933 1934config SYS_SUPPORTS_ZBOOT_UART_PROM 1935 bool 1936 select SYS_SUPPORTS_ZBOOT 1937 1938config CPU_LOONGSON2EF 1939 bool 1940 select CPU_SUPPORTS_32BIT_KERNEL 1941 select CPU_SUPPORTS_64BIT_KERNEL 1942 select CPU_SUPPORTS_HIGHMEM 1943 select CPU_SUPPORTS_HUGEPAGES 1944 select ARCH_HAS_PHYS_TO_DMA 1945 1946config CPU_LOONGSON32 1947 bool 1948 select CPU_MIPS32 1949 select CPU_MIPSR2 1950 select CPU_HAS_PREFETCH 1951 select CPU_SUPPORTS_32BIT_KERNEL 1952 select CPU_SUPPORTS_HIGHMEM 1953 select CPU_SUPPORTS_CPUFREQ 1954 1955config CPU_BMIPS32_3300 1956 select SMP_UP if SMP 1957 bool 1958 1959config CPU_BMIPS4350 1960 bool 1961 select SYS_SUPPORTS_SMP 1962 select SYS_SUPPORTS_HOTPLUG_CPU 1963 1964config CPU_BMIPS4380 1965 bool 1966 select MIPS_L1_CACHE_SHIFT_6 1967 select SYS_SUPPORTS_SMP 1968 select SYS_SUPPORTS_HOTPLUG_CPU 1969 select CPU_HAS_RIXI 1970 1971config CPU_BMIPS5000 1972 bool 1973 select MIPS_CPU_SCACHE 1974 select MIPS_L1_CACHE_SHIFT_7 1975 select SYS_SUPPORTS_SMP 1976 select SYS_SUPPORTS_HOTPLUG_CPU 1977 select CPU_HAS_RIXI 1978 1979config SYS_HAS_CPU_LOONGSON64 1980 bool 1981 select CPU_SUPPORTS_CPUFREQ 1982 select CPU_HAS_RIXI 1983 1984config SYS_HAS_CPU_LOONGSON2E 1985 bool 1986 1987config SYS_HAS_CPU_LOONGSON2F 1988 bool 1989 select CPU_SUPPORTS_CPUFREQ 1990 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1991 1992config SYS_HAS_CPU_LOONGSON1B 1993 bool 1994 1995config SYS_HAS_CPU_LOONGSON1C 1996 bool 1997 1998config SYS_HAS_CPU_MIPS32_R1 1999 bool 2000 2001config SYS_HAS_CPU_MIPS32_R2 2002 bool 2003 2004config SYS_HAS_CPU_MIPS32_R3_5 2005 bool 2006 2007config SYS_HAS_CPU_MIPS32_R5 2008 bool 2009 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2010 2011config SYS_HAS_CPU_MIPS32_R6 2012 bool 2013 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2014 2015config SYS_HAS_CPU_MIPS64_R1 2016 bool 2017 2018config SYS_HAS_CPU_MIPS64_R2 2019 bool 2020 2021config SYS_HAS_CPU_MIPS64_R6 2022 bool 2023 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2024 2025config SYS_HAS_CPU_P5600 2026 bool 2027 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2028 2029config SYS_HAS_CPU_R3000 2030 bool 2031 2032config SYS_HAS_CPU_TX39XX 2033 bool 2034 2035config SYS_HAS_CPU_VR41XX 2036 bool 2037 2038config SYS_HAS_CPU_R4300 2039 bool 2040 2041config SYS_HAS_CPU_R4X00 2042 bool 2043 2044config SYS_HAS_CPU_TX49XX 2045 bool 2046 2047config SYS_HAS_CPU_R5000 2048 bool 2049 2050config SYS_HAS_CPU_R5500 2051 bool 2052 2053config SYS_HAS_CPU_NEVADA 2054 bool 2055 2056config SYS_HAS_CPU_R10000 2057 bool 2058 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2059 2060config SYS_HAS_CPU_RM7000 2061 bool 2062 2063config SYS_HAS_CPU_SB1 2064 bool 2065 2066config SYS_HAS_CPU_CAVIUM_OCTEON 2067 bool 2068 2069config SYS_HAS_CPU_BMIPS 2070 bool 2071 2072config SYS_HAS_CPU_BMIPS32_3300 2073 bool 2074 select SYS_HAS_CPU_BMIPS 2075 2076config SYS_HAS_CPU_BMIPS4350 2077 bool 2078 select SYS_HAS_CPU_BMIPS 2079 2080config SYS_HAS_CPU_BMIPS4380 2081 bool 2082 select SYS_HAS_CPU_BMIPS 2083 2084config SYS_HAS_CPU_BMIPS5000 2085 bool 2086 select SYS_HAS_CPU_BMIPS 2087 select ARCH_HAS_SYNC_DMA_FOR_CPU 2088 2089config SYS_HAS_CPU_XLR 2090 bool 2091 2092config SYS_HAS_CPU_XLP 2093 bool 2094 2095# 2096# CPU may reorder R->R, R->W, W->R, W->W 2097# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 2098# 2099config WEAK_ORDERING 2100 bool 2101 2102# 2103# CPU may reorder reads and writes beyond LL/SC 2104# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 2105# 2106config WEAK_REORDERING_BEYOND_LLSC 2107 bool 2108endmenu 2109 2110# 2111# These two indicate any level of the MIPS32 and MIPS64 architecture 2112# 2113config CPU_MIPS32 2114 bool 2115 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 2116 CPU_MIPS32_R6 || CPU_P5600 2117 2118config CPU_MIPS64 2119 bool 2120 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2121 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON 2122 2123# 2124# These indicate the revision of the architecture 2125# 2126config CPU_MIPSR1 2127 bool 2128 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2129 2130config CPU_MIPSR2 2131 bool 2132 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2133 select CPU_HAS_RIXI 2134 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2135 select MIPS_SPRAM 2136 2137config CPU_MIPSR5 2138 bool 2139 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2140 select CPU_HAS_RIXI 2141 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2142 select MIPS_SPRAM 2143 2144config CPU_MIPSR6 2145 bool 2146 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2147 select CPU_HAS_RIXI 2148 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2149 select HAVE_ARCH_BITREVERSE 2150 select MIPS_ASID_BITS_VARIABLE 2151 select MIPS_CRC_SUPPORT 2152 select MIPS_SPRAM 2153 2154config TARGET_ISA_REV 2155 int 2156 default 1 if CPU_MIPSR1 2157 default 2 if CPU_MIPSR2 2158 default 5 if CPU_MIPSR5 2159 default 6 if CPU_MIPSR6 2160 default 0 2161 help 2162 Reflects the ISA revision being targeted by the kernel build. This 2163 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2164 2165config EVA 2166 bool 2167 2168config XPA 2169 bool 2170 2171config SYS_SUPPORTS_32BIT_KERNEL 2172 bool 2173config SYS_SUPPORTS_64BIT_KERNEL 2174 bool 2175config CPU_SUPPORTS_32BIT_KERNEL 2176 bool 2177config CPU_SUPPORTS_64BIT_KERNEL 2178 bool 2179config CPU_SUPPORTS_CPUFREQ 2180 bool 2181config CPU_SUPPORTS_ADDRWINCFG 2182 bool 2183config CPU_SUPPORTS_HUGEPAGES 2184 bool 2185 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) 2186config MIPS_PGD_C0_CONTEXT 2187 bool 2188 depends on 64BIT 2189 default y if (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP 2190 2191# 2192# Set to y for ptrace access to watch registers. 2193# 2194config HARDWARE_WATCHPOINTS 2195 bool 2196 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2197 2198menu "Kernel type" 2199 2200choice 2201 prompt "Kernel code model" 2202 help 2203 You should only select this option if you have a workload that 2204 actually benefits from 64-bit processing or if your machine has 2205 large memory. You will only be presented a single option in this 2206 menu if your system does not support both 32-bit and 64-bit kernels. 2207 2208config 32BIT 2209 bool "32-bit kernel" 2210 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2211 select TRAD_SIGNALS 2212 help 2213 Select this option if you want to build a 32-bit kernel. 2214 2215config 64BIT 2216 bool "64-bit kernel" 2217 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2218 help 2219 Select this option if you want to build a 64-bit kernel. 2220 2221endchoice 2222 2223config MIPS_VA_BITS_48 2224 bool "48 bits virtual memory" 2225 depends on 64BIT 2226 help 2227 Support a maximum at least 48 bits of application virtual 2228 memory. Default is 40 bits or less, depending on the CPU. 2229 For page sizes 16k and above, this option results in a small 2230 memory overhead for page tables. For 4k page size, a fourth 2231 level of page tables is added which imposes both a memory 2232 overhead as well as slower TLB fault handling. 2233 2234 If unsure, say N. 2235 2236choice 2237 prompt "Kernel page size" 2238 default PAGE_SIZE_4KB 2239 2240config PAGE_SIZE_4KB 2241 bool "4kB" 2242 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2243 help 2244 This option select the standard 4kB Linux page size. On some 2245 R3000-family processors this is the only available page size. Using 2246 4kB page size will minimize memory consumption and is therefore 2247 recommended for low memory systems. 2248 2249config PAGE_SIZE_8KB 2250 bool "8kB" 2251 depends on CPU_CAVIUM_OCTEON 2252 depends on !MIPS_VA_BITS_48 2253 help 2254 Using 8kB page size will result in higher performance kernel at 2255 the price of higher memory consumption. This option is available 2256 only on cnMIPS processors. Note that you will need a suitable Linux 2257 distribution to support this. 2258 2259config PAGE_SIZE_16KB 2260 bool "16kB" 2261 depends on !CPU_R3000 && !CPU_TX39XX 2262 help 2263 Using 16kB page size will result in higher performance kernel at 2264 the price of higher memory consumption. This option is available on 2265 all non-R3000 family processors. Note that you will need a suitable 2266 Linux distribution to support this. 2267 2268config PAGE_SIZE_32KB 2269 bool "32kB" 2270 depends on CPU_CAVIUM_OCTEON 2271 depends on !MIPS_VA_BITS_48 2272 help 2273 Using 32kB page size will result in higher performance kernel at 2274 the price of higher memory consumption. This option is available 2275 only on cnMIPS cores. Note that you will need a suitable Linux 2276 distribution to support this. 2277 2278config PAGE_SIZE_64KB 2279 bool "64kB" 2280 depends on !CPU_R3000 && !CPU_TX39XX 2281 help 2282 Using 64kB page size will result in higher performance kernel at 2283 the price of higher memory consumption. This option is available on 2284 all non-R3000 family processor. Not that at the time of this 2285 writing this option is still high experimental. 2286 2287endchoice 2288 2289config FORCE_MAX_ZONEORDER 2290 int "Maximum zone order" 2291 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2292 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2293 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2294 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2295 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2296 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2297 range 0 64 2298 default "11" 2299 help 2300 The kernel memory allocator divides physically contiguous memory 2301 blocks into "zones", where each zone is a power of two number of 2302 pages. This option selects the largest power of two that the kernel 2303 keeps in the memory allocator. If you need to allocate very large 2304 blocks of physically contiguous memory, then you may need to 2305 increase this value. 2306 2307 This config option is actually maximum order plus one. For example, 2308 a value of 11 means that the largest free memory block is 2^10 pages. 2309 2310 The page size is not necessarily 4KB. Keep this in mind 2311 when choosing a value for this option. 2312 2313config BOARD_SCACHE 2314 bool 2315 2316config IP22_CPU_SCACHE 2317 bool 2318 select BOARD_SCACHE 2319 2320# 2321# Support for a MIPS32 / MIPS64 style S-caches 2322# 2323config MIPS_CPU_SCACHE 2324 bool 2325 select BOARD_SCACHE 2326 2327config R5000_CPU_SCACHE 2328 bool 2329 select BOARD_SCACHE 2330 2331config RM7000_CPU_SCACHE 2332 bool 2333 select BOARD_SCACHE 2334 2335config SIBYTE_DMA_PAGEOPS 2336 bool "Use DMA to clear/copy pages" 2337 depends on CPU_SB1 2338 help 2339 Instead of using the CPU to zero and copy pages, use a Data Mover 2340 channel. These DMA channels are otherwise unused by the standard 2341 SiByte Linux port. Seems to give a small performance benefit. 2342 2343config CPU_HAS_PREFETCH 2344 bool 2345 2346config CPU_GENERIC_DUMP_TLB 2347 bool 2348 default y if !(CPU_R3000 || CPU_TX39XX) 2349 2350config MIPS_FP_SUPPORT 2351 bool "Floating Point support" if EXPERT 2352 default y 2353 help 2354 Select y to include support for floating point in the kernel 2355 including initialization of FPU hardware, FP context save & restore 2356 and emulation of an FPU where necessary. Without this support any 2357 userland program attempting to use floating point instructions will 2358 receive a SIGILL. 2359 2360 If you know that your userland will not attempt to use floating point 2361 instructions then you can say n here to shrink the kernel a little. 2362 2363 If unsure, say y. 2364 2365config CPU_R2300_FPU 2366 bool 2367 depends on MIPS_FP_SUPPORT 2368 default y if CPU_R3000 || CPU_TX39XX 2369 2370config CPU_R3K_TLB 2371 bool 2372 2373config CPU_R4K_FPU 2374 bool 2375 depends on MIPS_FP_SUPPORT 2376 default y if !CPU_R2300_FPU 2377 2378config CPU_R4K_CACHE_TLB 2379 bool 2380 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2381 2382config MIPS_MT_SMP 2383 bool "MIPS MT SMP support (1 TC on each available VPE)" 2384 default y 2385 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2386 select CPU_MIPSR2_IRQ_VI 2387 select CPU_MIPSR2_IRQ_EI 2388 select SYNC_R4K 2389 select MIPS_MT 2390 select SMP 2391 select SMP_UP 2392 select SYS_SUPPORTS_SMP 2393 select SYS_SUPPORTS_SCHED_SMT 2394 select MIPS_PERF_SHARED_TC_COUNTERS 2395 help 2396 This is a kernel model which is known as SMVP. This is supported 2397 on cores with the MT ASE and uses the available VPEs to implement 2398 virtual processors which supports SMP. This is equivalent to the 2399 Intel Hyperthreading feature. For further information go to 2400 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2401 2402config MIPS_MT 2403 bool 2404 2405config SCHED_SMT 2406 bool "SMT (multithreading) scheduler support" 2407 depends on SYS_SUPPORTS_SCHED_SMT 2408 default n 2409 help 2410 SMT scheduler support improves the CPU scheduler's decision making 2411 when dealing with MIPS MT enabled cores at a cost of slightly 2412 increased overhead in some places. If unsure say N here. 2413 2414config SYS_SUPPORTS_SCHED_SMT 2415 bool 2416 2417config SYS_SUPPORTS_MULTITHREADING 2418 bool 2419 2420config MIPS_MT_FPAFF 2421 bool "Dynamic FPU affinity for FP-intensive threads" 2422 default y 2423 depends on MIPS_MT_SMP 2424 2425config MIPSR2_TO_R6_EMULATOR 2426 bool "MIPS R2-to-R6 emulator" 2427 depends on CPU_MIPSR6 2428 depends on MIPS_FP_SUPPORT 2429 default y 2430 help 2431 Choose this option if you want to run non-R6 MIPS userland code. 2432 Even if you say 'Y' here, the emulator will still be disabled by 2433 default. You can enable it using the 'mipsr2emu' kernel option. 2434 The only reason this is a build-time option is to save ~14K from the 2435 final kernel image. 2436 2437config SYS_SUPPORTS_VPE_LOADER 2438 bool 2439 depends on SYS_SUPPORTS_MULTITHREADING 2440 help 2441 Indicates that the platform supports the VPE loader, and provides 2442 physical_memsize. 2443 2444config MIPS_VPE_LOADER 2445 bool "VPE loader support." 2446 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2447 select CPU_MIPSR2_IRQ_VI 2448 select CPU_MIPSR2_IRQ_EI 2449 select MIPS_MT 2450 help 2451 Includes a loader for loading an elf relocatable object 2452 onto another VPE and running it. 2453 2454config MIPS_VPE_LOADER_CMP 2455 bool 2456 default "y" 2457 depends on MIPS_VPE_LOADER && MIPS_CMP 2458 2459config MIPS_VPE_LOADER_MT 2460 bool 2461 default "y" 2462 depends on MIPS_VPE_LOADER && !MIPS_CMP 2463 2464config MIPS_VPE_LOADER_TOM 2465 bool "Load VPE program into memory hidden from linux" 2466 depends on MIPS_VPE_LOADER 2467 default y 2468 help 2469 The loader can use memory that is present but has been hidden from 2470 Linux using the kernel command line option "mem=xxMB". It's up to 2471 you to ensure the amount you put in the option and the space your 2472 program requires is less or equal to the amount physically present. 2473 2474config MIPS_VPE_APSP_API 2475 bool "Enable support for AP/SP API (RTLX)" 2476 depends on MIPS_VPE_LOADER 2477 2478config MIPS_VPE_APSP_API_CMP 2479 bool 2480 default "y" 2481 depends on MIPS_VPE_APSP_API && MIPS_CMP 2482 2483config MIPS_VPE_APSP_API_MT 2484 bool 2485 default "y" 2486 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2487 2488config MIPS_CMP 2489 bool "MIPS CMP framework support (DEPRECATED)" 2490 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2491 select SMP 2492 select SYNC_R4K 2493 select SYS_SUPPORTS_SMP 2494 select WEAK_ORDERING 2495 default n 2496 help 2497 Select this if you are using a bootloader which implements the "CMP 2498 framework" protocol (ie. YAMON) and want your kernel to make use of 2499 its ability to start secondary CPUs. 2500 2501 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2502 instead of this. 2503 2504config MIPS_CPS 2505 bool "MIPS Coherent Processing System support" 2506 depends on SYS_SUPPORTS_MIPS_CPS 2507 select MIPS_CM 2508 select MIPS_CPS_PM if HOTPLUG_CPU 2509 select SMP 2510 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2511 select SYS_SUPPORTS_HOTPLUG_CPU 2512 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2513 select SYS_SUPPORTS_SMP 2514 select WEAK_ORDERING 2515 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 2516 help 2517 Select this if you wish to run an SMP kernel across multiple cores 2518 within a MIPS Coherent Processing System. When this option is 2519 enabled the kernel will probe for other cores and boot them with 2520 no external assistance. It is safe to enable this when hardware 2521 support is unavailable. 2522 2523config MIPS_CPS_PM 2524 depends on MIPS_CPS 2525 bool 2526 2527config MIPS_CM 2528 bool 2529 select MIPS_CPC 2530 2531config MIPS_CPC 2532 bool 2533 2534config SB1_PASS_2_WORKAROUNDS 2535 bool 2536 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2537 default y 2538 2539config SB1_PASS_2_1_WORKAROUNDS 2540 bool 2541 depends on CPU_SB1 && CPU_SB1_PASS_2 2542 default y 2543 2544choice 2545 prompt "SmartMIPS or microMIPS ASE support" 2546 2547config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2548 bool "None" 2549 help 2550 Select this if you want neither microMIPS nor SmartMIPS support 2551 2552config CPU_HAS_SMARTMIPS 2553 depends on SYS_SUPPORTS_SMARTMIPS 2554 bool "SmartMIPS" 2555 help 2556 SmartMIPS is a extension of the MIPS32 architecture aimed at 2557 increased security at both hardware and software level for 2558 smartcards. Enabling this option will allow proper use of the 2559 SmartMIPS instructions by Linux applications. However a kernel with 2560 this option will not work on a MIPS core without SmartMIPS core. If 2561 you don't know you probably don't have SmartMIPS and should say N 2562 here. 2563 2564config CPU_MICROMIPS 2565 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2566 bool "microMIPS" 2567 help 2568 When this option is enabled the kernel will be built using the 2569 microMIPS ISA 2570 2571endchoice 2572 2573config CPU_HAS_MSA 2574 bool "Support for the MIPS SIMD Architecture" 2575 depends on CPU_SUPPORTS_MSA 2576 depends on MIPS_FP_SUPPORT 2577 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2578 help 2579 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2580 and a set of SIMD instructions to operate on them. When this option 2581 is enabled the kernel will support allocating & switching MSA 2582 vector register contexts. If you know that your kernel will only be 2583 running on CPUs which do not support MSA or that your userland will 2584 not be making use of it then you may wish to say N here to reduce 2585 the size & complexity of your kernel. 2586 2587 If unsure, say Y. 2588 2589config CPU_HAS_WB 2590 bool 2591 2592config XKS01 2593 bool 2594 2595config CPU_HAS_DIEI 2596 depends on !CPU_DIEI_BROKEN 2597 bool 2598 2599config CPU_DIEI_BROKEN 2600 bool 2601 2602config CPU_HAS_RIXI 2603 bool 2604 2605config CPU_NO_LOAD_STORE_LR 2606 bool 2607 help 2608 CPU lacks support for unaligned load and store instructions: 2609 LWL, LWR, SWL, SWR (Load/store word left/right). 2610 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2611 systems). 2612 2613# 2614# Vectored interrupt mode is an R2 feature 2615# 2616config CPU_MIPSR2_IRQ_VI 2617 bool 2618 2619# 2620# Extended interrupt mode is an R2 feature 2621# 2622config CPU_MIPSR2_IRQ_EI 2623 bool 2624 2625config CPU_HAS_SYNC 2626 bool 2627 depends on !CPU_R3000 2628 default y 2629 2630# 2631# CPU non-features 2632# 2633config CPU_DADDI_WORKAROUNDS 2634 bool 2635 2636config CPU_R4000_WORKAROUNDS 2637 bool 2638 select CPU_R4400_WORKAROUNDS 2639 2640config CPU_R4400_WORKAROUNDS 2641 bool 2642 2643config CPU_R4X00_BUGS64 2644 bool 2645 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2646 2647config MIPS_ASID_SHIFT 2648 int 2649 default 6 if CPU_R3000 || CPU_TX39XX 2650 default 0 2651 2652config MIPS_ASID_BITS 2653 int 2654 default 0 if MIPS_ASID_BITS_VARIABLE 2655 default 6 if CPU_R3000 || CPU_TX39XX 2656 default 8 2657 2658config MIPS_ASID_BITS_VARIABLE 2659 bool 2660 2661config MIPS_CRC_SUPPORT 2662 bool 2663 2664# R4600 erratum. Due to the lack of errata information the exact 2665# technical details aren't known. I've experimentally found that disabling 2666# interrupts during indexed I-cache flushes seems to be sufficient to deal 2667# with the issue. 2668config WAR_R4600_V1_INDEX_ICACHEOP 2669 bool 2670 2671# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2672# 2673# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2674# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2675# executed if there is no other dcache activity. If the dcache is 2676# accessed for another instruction immediately preceding when these 2677# cache instructions are executing, it is possible that the dcache 2678# tag match outputs used by these cache instructions will be 2679# incorrect. These cache instructions should be preceded by at least 2680# four instructions that are not any kind of load or store 2681# instruction. 2682# 2683# This is not allowed: lw 2684# nop 2685# nop 2686# nop 2687# cache Hit_Writeback_Invalidate_D 2688# 2689# This is allowed: lw 2690# nop 2691# nop 2692# nop 2693# nop 2694# cache Hit_Writeback_Invalidate_D 2695config WAR_R4600_V1_HIT_CACHEOP 2696 bool 2697 2698# Writeback and invalidate the primary cache dcache before DMA. 2699# 2700# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2701# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2702# operate correctly if the internal data cache refill buffer is empty. These 2703# CACHE instructions should be separated from any potential data cache miss 2704# by a load instruction to an uncached address to empty the response buffer." 2705# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2706# in .pdf format.) 2707config WAR_R4600_V2_HIT_CACHEOP 2708 bool 2709 2710# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2711# the line which this instruction itself exists, the following 2712# operation is not guaranteed." 2713# 2714# Workaround: do two phase flushing for Index_Invalidate_I 2715config WAR_TX49XX_ICACHE_INDEX_INV 2716 bool 2717 2718# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2719# opposes it being called that) where invalid instructions in the same 2720# I-cache line worth of instructions being fetched may case spurious 2721# exceptions. 2722config WAR_ICACHE_REFILLS 2723 bool 2724 2725# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2726# may cause ll / sc and lld / scd sequences to execute non-atomically. 2727config WAR_R10000_LLSC 2728 bool 2729 2730# 34K core erratum: "Problems Executing the TLBR Instruction" 2731config WAR_MIPS34K_MISSED_ITLB 2732 bool 2733 2734# 2735# - Highmem only makes sense for the 32-bit kernel. 2736# - The current highmem code will only work properly on physically indexed 2737# caches such as R3000, SB1, R7000 or those that look like they're virtually 2738# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2739# moment we protect the user and offer the highmem option only on machines 2740# where it's known to be safe. This will not offer highmem on a few systems 2741# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2742# indexed CPUs but we're playing safe. 2743# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2744# know they might have memory configurations that could make use of highmem 2745# support. 2746# 2747config HIGHMEM 2748 bool "High Memory Support" 2749 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2750 select KMAP_LOCAL 2751 2752config CPU_SUPPORTS_HIGHMEM 2753 bool 2754 2755config SYS_SUPPORTS_HIGHMEM 2756 bool 2757 2758config SYS_SUPPORTS_SMARTMIPS 2759 bool 2760 2761config SYS_SUPPORTS_MICROMIPS 2762 bool 2763 2764config SYS_SUPPORTS_MIPS16 2765 bool 2766 help 2767 This option must be set if a kernel might be executed on a MIPS16- 2768 enabled CPU even if MIPS16 is not actually being used. In other 2769 words, it makes the kernel MIPS16-tolerant. 2770 2771config CPU_SUPPORTS_MSA 2772 bool 2773 2774config ARCH_FLATMEM_ENABLE 2775 def_bool y 2776 depends on !NUMA && !CPU_LOONGSON2EF 2777 2778config ARCH_SPARSEMEM_ENABLE 2779 bool 2780 select SPARSEMEM_STATIC if !SGI_IP27 2781 2782config NUMA 2783 bool "NUMA Support" 2784 depends on SYS_SUPPORTS_NUMA 2785 select SMP 2786 help 2787 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2788 Access). This option improves performance on systems with more 2789 than two nodes; on two node systems it is generally better to 2790 leave it disabled; on single node systems leave this option 2791 disabled. 2792 2793config SYS_SUPPORTS_NUMA 2794 bool 2795 2796config HAVE_SETUP_PER_CPU_AREA 2797 def_bool y 2798 depends on NUMA 2799 2800config NEED_PER_CPU_EMBED_FIRST_CHUNK 2801 def_bool y 2802 depends on NUMA 2803 2804config RELOCATABLE 2805 bool "Relocatable kernel" 2806 depends on SYS_SUPPORTS_RELOCATABLE 2807 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2808 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2809 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2810 CPU_P5600 || CAVIUM_OCTEON_SOC || \ 2811 CPU_LOONGSON64 2812 help 2813 This builds a kernel image that retains relocation information 2814 so it can be loaded someplace besides the default 1MB. 2815 The relocations make the kernel binary about 15% larger, 2816 but are discarded at runtime 2817 2818config RELOCATION_TABLE_SIZE 2819 hex "Relocation table size" 2820 depends on RELOCATABLE 2821 range 0x0 0x01000000 2822 default "0x00200000" if CPU_LOONGSON64 2823 default "0x00100000" 2824 help 2825 A table of relocation data will be appended to the kernel binary 2826 and parsed at boot to fix up the relocated kernel. 2827 2828 This option allows the amount of space reserved for the table to be 2829 adjusted, although the default of 1Mb should be ok in most cases. 2830 2831 The build will fail and a valid size suggested if this is too small. 2832 2833 If unsure, leave at the default value. 2834 2835config RANDOMIZE_BASE 2836 bool "Randomize the address of the kernel image" 2837 depends on RELOCATABLE 2838 help 2839 Randomizes the physical and virtual address at which the 2840 kernel image is loaded, as a security feature that 2841 deters exploit attempts relying on knowledge of the location 2842 of kernel internals. 2843 2844 Entropy is generated using any coprocessor 0 registers available. 2845 2846 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2847 2848 If unsure, say N. 2849 2850config RANDOMIZE_BASE_MAX_OFFSET 2851 hex "Maximum kASLR offset" if EXPERT 2852 depends on RANDOMIZE_BASE 2853 range 0x0 0x40000000 if EVA || 64BIT 2854 range 0x0 0x08000000 2855 default "0x01000000" 2856 help 2857 When kASLR is active, this provides the maximum offset that will 2858 be applied to the kernel image. It should be set according to the 2859 amount of physical RAM available in the target system minus 2860 PHYSICAL_START and must be a power of 2. 2861 2862 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2863 EVA or 64-bit. The default is 16Mb. 2864 2865config NODES_SHIFT 2866 int 2867 default "6" 2868 depends on NUMA 2869 2870config HW_PERF_EVENTS 2871 bool "Enable hardware performance counter support for perf events" 2872 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64) 2873 default y 2874 help 2875 Enable hardware performance counter support for perf events. If 2876 disabled, perf events will use software events only. 2877 2878config DMI 2879 bool "Enable DMI scanning" 2880 depends on MACH_LOONGSON64 2881 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2882 default y 2883 help 2884 Enabled scanning of DMI to identify machine quirks. Say Y 2885 here unless you have verified that your setup is not 2886 affected by entries in the DMI blacklist. Required by PNP 2887 BIOS code. 2888 2889config SMP 2890 bool "Multi-Processing support" 2891 depends on SYS_SUPPORTS_SMP 2892 help 2893 This enables support for systems with more than one CPU. If you have 2894 a system with only one CPU, say N. If you have a system with more 2895 than one CPU, say Y. 2896 2897 If you say N here, the kernel will run on uni- and multiprocessor 2898 machines, but will use only one CPU of a multiprocessor machine. If 2899 you say Y here, the kernel will run on many, but not all, 2900 uniprocessor machines. On a uniprocessor machine, the kernel 2901 will run faster if you say N here. 2902 2903 People using multiprocessor machines who say Y here should also say 2904 Y to "Enhanced Real Time Clock Support", below. 2905 2906 See also the SMP-HOWTO available at 2907 <https://www.tldp.org/docs.html#howto>. 2908 2909 If you don't know what to do here, say N. 2910 2911config HOTPLUG_CPU 2912 bool "Support for hot-pluggable CPUs" 2913 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2914 help 2915 Say Y here to allow turning CPUs off and on. CPUs can be 2916 controlled through /sys/devices/system/cpu. 2917 (Note: power management support will enable this option 2918 automatically on SMP systems. ) 2919 Say N if you want to disable CPU hotplug. 2920 2921config SMP_UP 2922 bool 2923 2924config SYS_SUPPORTS_MIPS_CMP 2925 bool 2926 2927config SYS_SUPPORTS_MIPS_CPS 2928 bool 2929 2930config SYS_SUPPORTS_SMP 2931 bool 2932 2933config NR_CPUS_DEFAULT_4 2934 bool 2935 2936config NR_CPUS_DEFAULT_8 2937 bool 2938 2939config NR_CPUS_DEFAULT_16 2940 bool 2941 2942config NR_CPUS_DEFAULT_32 2943 bool 2944 2945config NR_CPUS_DEFAULT_64 2946 bool 2947 2948config NR_CPUS 2949 int "Maximum number of CPUs (2-256)" 2950 range 2 256 2951 depends on SMP 2952 default "4" if NR_CPUS_DEFAULT_4 2953 default "8" if NR_CPUS_DEFAULT_8 2954 default "16" if NR_CPUS_DEFAULT_16 2955 default "32" if NR_CPUS_DEFAULT_32 2956 default "64" if NR_CPUS_DEFAULT_64 2957 help 2958 This allows you to specify the maximum number of CPUs which this 2959 kernel will support. The maximum supported value is 32 for 32-bit 2960 kernel and 64 for 64-bit kernels; the minimum value which makes 2961 sense is 1 for Qemu (useful only for kernel debugging purposes) 2962 and 2 for all others. 2963 2964 This is purely to save memory - each supported CPU adds 2965 approximately eight kilobytes to the kernel image. For best 2966 performance should round up your number of processors to the next 2967 power of two. 2968 2969config MIPS_PERF_SHARED_TC_COUNTERS 2970 bool 2971 2972config MIPS_NR_CPU_NR_MAP_1024 2973 bool 2974 2975config MIPS_NR_CPU_NR_MAP 2976 int 2977 depends on SMP 2978 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2979 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2980 2981# 2982# Timer Interrupt Frequency Configuration 2983# 2984 2985choice 2986 prompt "Timer frequency" 2987 default HZ_250 2988 help 2989 Allows the configuration of the timer frequency. 2990 2991 config HZ_24 2992 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2993 2994 config HZ_48 2995 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 2996 2997 config HZ_100 2998 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 2999 3000 config HZ_128 3001 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 3002 3003 config HZ_250 3004 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 3005 3006 config HZ_256 3007 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 3008 3009 config HZ_1000 3010 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 3011 3012 config HZ_1024 3013 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 3014 3015endchoice 3016 3017config SYS_SUPPORTS_24HZ 3018 bool 3019 3020config SYS_SUPPORTS_48HZ 3021 bool 3022 3023config SYS_SUPPORTS_100HZ 3024 bool 3025 3026config SYS_SUPPORTS_128HZ 3027 bool 3028 3029config SYS_SUPPORTS_250HZ 3030 bool 3031 3032config SYS_SUPPORTS_256HZ 3033 bool 3034 3035config SYS_SUPPORTS_1000HZ 3036 bool 3037 3038config SYS_SUPPORTS_1024HZ 3039 bool 3040 3041config SYS_SUPPORTS_ARBIT_HZ 3042 bool 3043 default y if !SYS_SUPPORTS_24HZ && \ 3044 !SYS_SUPPORTS_48HZ && \ 3045 !SYS_SUPPORTS_100HZ && \ 3046 !SYS_SUPPORTS_128HZ && \ 3047 !SYS_SUPPORTS_250HZ && \ 3048 !SYS_SUPPORTS_256HZ && \ 3049 !SYS_SUPPORTS_1000HZ && \ 3050 !SYS_SUPPORTS_1024HZ 3051 3052config HZ 3053 int 3054 default 24 if HZ_24 3055 default 48 if HZ_48 3056 default 100 if HZ_100 3057 default 128 if HZ_128 3058 default 250 if HZ_250 3059 default 256 if HZ_256 3060 default 1000 if HZ_1000 3061 default 1024 if HZ_1024 3062 3063config SCHED_HRTICK 3064 def_bool HIGH_RES_TIMERS 3065 3066config KEXEC 3067 bool "Kexec system call" 3068 select KEXEC_CORE 3069 help 3070 kexec is a system call that implements the ability to shutdown your 3071 current kernel, and to start another kernel. It is like a reboot 3072 but it is independent of the system firmware. And like a reboot 3073 you can start any kernel with it, not just Linux. 3074 3075 The name comes from the similarity to the exec system call. 3076 3077 It is an ongoing process to be certain the hardware in a machine 3078 is properly shutdown, so do not be surprised if this code does not 3079 initially work for you. As of this writing the exact hardware 3080 interface is strongly in flux, so no good recommendation can be 3081 made. 3082 3083config CRASH_DUMP 3084 bool "Kernel crash dumps" 3085 help 3086 Generate crash dump after being started by kexec. 3087 This should be normally only set in special crash dump kernels 3088 which are loaded in the main kernel with kexec-tools into 3089 a specially reserved region and then later executed after 3090 a crash by kdump/kexec. The crash dump kernel must be compiled 3091 to a memory address not used by the main kernel or firmware using 3092 PHYSICAL_START. 3093 3094config PHYSICAL_START 3095 hex "Physical address where the kernel is loaded" 3096 default "0xffffffff84000000" 3097 depends on CRASH_DUMP 3098 help 3099 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 3100 If you plan to use kernel for capturing the crash dump change 3101 this value to start of the reserved region (the "X" value as 3102 specified in the "crashkernel=YM@XM" command line boot parameter 3103 passed to the panic-ed kernel). 3104 3105config MIPS_O32_FP64_SUPPORT 3106 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 3107 depends on 32BIT || MIPS32_O32 3108 help 3109 When this is enabled, the kernel will support use of 64-bit floating 3110 point registers with binaries using the O32 ABI along with the 3111 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 3112 32-bit MIPS systems this support is at the cost of increasing the 3113 size and complexity of the compiled FPU emulator. Thus if you are 3114 running a MIPS32 system and know that none of your userland binaries 3115 will require 64-bit floating point, you may wish to reduce the size 3116 of your kernel & potentially improve FP emulation performance by 3117 saying N here. 3118 3119 Although binutils currently supports use of this flag the details 3120 concerning its effect upon the O32 ABI in userland are still being 3121 worked on. In order to avoid userland becoming dependent upon current 3122 behaviour before the details have been finalised, this option should 3123 be considered experimental and only enabled by those working upon 3124 said details. 3125 3126 If unsure, say N. 3127 3128config USE_OF 3129 bool 3130 select OF 3131 select OF_EARLY_FLATTREE 3132 select IRQ_DOMAIN 3133 3134config UHI_BOOT 3135 bool 3136 3137config BUILTIN_DTB 3138 bool 3139 3140choice 3141 prompt "Kernel appended dtb support" if USE_OF 3142 default MIPS_NO_APPENDED_DTB 3143 3144 config MIPS_NO_APPENDED_DTB 3145 bool "None" 3146 help 3147 Do not enable appended dtb support. 3148 3149 config MIPS_ELF_APPENDED_DTB 3150 bool "vmlinux" 3151 help 3152 With this option, the boot code will look for a device tree binary 3153 DTB) included in the vmlinux ELF section .appended_dtb. By default 3154 it is empty and the DTB can be appended using binutils command 3155 objcopy: 3156 3157 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3158 3159 This is meant as a backward compatibility convenience for those 3160 systems with a bootloader that can't be upgraded to accommodate 3161 the documented boot protocol using a device tree. 3162 3163 config MIPS_RAW_APPENDED_DTB 3164 bool "vmlinux.bin or vmlinuz.bin" 3165 help 3166 With this option, the boot code will look for a device tree binary 3167 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3168 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3169 3170 This is meant as a backward compatibility convenience for those 3171 systems with a bootloader that can't be upgraded to accommodate 3172 the documented boot protocol using a device tree. 3173 3174 Beware that there is very little in terms of protection against 3175 this option being confused by leftover garbage in memory that might 3176 look like a DTB header after a reboot if no actual DTB is appended 3177 to vmlinux.bin. Do not leave this option active in a production kernel 3178 if you don't intend to always append a DTB. 3179endchoice 3180 3181choice 3182 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3183 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3184 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3185 !CAVIUM_OCTEON_SOC 3186 default MIPS_CMDLINE_FROM_BOOTLOADER 3187 3188 config MIPS_CMDLINE_FROM_DTB 3189 depends on USE_OF 3190 bool "Dtb kernel arguments if available" 3191 3192 config MIPS_CMDLINE_DTB_EXTEND 3193 depends on USE_OF 3194 bool "Extend dtb kernel arguments with bootloader arguments" 3195 3196 config MIPS_CMDLINE_FROM_BOOTLOADER 3197 bool "Bootloader kernel arguments if available" 3198 3199 config MIPS_CMDLINE_BUILTIN_EXTEND 3200 depends on CMDLINE_BOOL 3201 bool "Extend builtin kernel arguments with bootloader arguments" 3202endchoice 3203 3204endmenu 3205 3206config LOCKDEP_SUPPORT 3207 bool 3208 default y 3209 3210config STACKTRACE_SUPPORT 3211 bool 3212 default y 3213 3214config PGTABLE_LEVELS 3215 int 3216 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3217 default 3 if 64BIT && !PAGE_SIZE_64KB 3218 default 2 3219 3220config MIPS_AUTO_PFN_OFFSET 3221 bool 3222 3223menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3224 3225config PCI_DRIVERS_GENERIC 3226 select PCI_DOMAINS_GENERIC if PCI 3227 bool 3228 3229config PCI_DRIVERS_LEGACY 3230 def_bool !PCI_DRIVERS_GENERIC 3231 select NO_GENERIC_PCI_IOPORT_MAP 3232 select PCI_DOMAINS if PCI 3233 3234# 3235# ISA support is now enabled via select. Too many systems still have the one 3236# or other ISA chip on the board that users don't know about so don't expect 3237# users to choose the right thing ... 3238# 3239config ISA 3240 bool 3241 3242config TC 3243 bool "TURBOchannel support" 3244 depends on MACH_DECSTATION 3245 help 3246 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3247 processors. TURBOchannel programming specifications are available 3248 at: 3249 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3250 and: 3251 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3252 Linux driver support status is documented at: 3253 <http://www.linux-mips.org/wiki/DECstation> 3254 3255config MMU 3256 bool 3257 default y 3258 3259config ARCH_MMAP_RND_BITS_MIN 3260 default 12 if 64BIT 3261 default 8 3262 3263config ARCH_MMAP_RND_BITS_MAX 3264 default 18 if 64BIT 3265 default 15 3266 3267config ARCH_MMAP_RND_COMPAT_BITS_MIN 3268 default 8 3269 3270config ARCH_MMAP_RND_COMPAT_BITS_MAX 3271 default 15 3272 3273config I8253 3274 bool 3275 select CLKSRC_I8253 3276 select CLKEVT_I8253 3277 select MIPS_EXTERNAL_TIMER 3278endmenu 3279 3280config TRAD_SIGNALS 3281 bool 3282 3283config MIPS32_COMPAT 3284 bool 3285 3286config COMPAT 3287 bool 3288 3289config SYSVIPC_COMPAT 3290 bool 3291 3292config MIPS32_O32 3293 bool "Kernel support for o32 binaries" 3294 depends on 64BIT 3295 select ARCH_WANT_OLD_COMPAT_IPC 3296 select COMPAT 3297 select MIPS32_COMPAT 3298 select SYSVIPC_COMPAT if SYSVIPC 3299 help 3300 Select this option if you want to run o32 binaries. These are pure 3301 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3302 existing binaries are in this format. 3303 3304 If unsure, say Y. 3305 3306config MIPS32_N32 3307 bool "Kernel support for n32 binaries" 3308 depends on 64BIT 3309 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3310 select COMPAT 3311 select MIPS32_COMPAT 3312 select SYSVIPC_COMPAT if SYSVIPC 3313 help 3314 Select this option if you want to run n32 binaries. These are 3315 64-bit binaries using 32-bit quantities for addressing and certain 3316 data that would normally be 64-bit. They are used in special 3317 cases. 3318 3319 If unsure, say N. 3320 3321menu "Power management options" 3322 3323config ARCH_HIBERNATION_POSSIBLE 3324 def_bool y 3325 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3326 3327config ARCH_SUSPEND_POSSIBLE 3328 def_bool y 3329 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3330 3331source "kernel/power/Kconfig" 3332 3333endmenu 3334 3335config MIPS_EXTERNAL_TIMER 3336 bool 3337 3338menu "CPU Power Management" 3339 3340if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3341source "drivers/cpufreq/Kconfig" 3342endif 3343 3344source "drivers/cpuidle/Kconfig" 3345 3346endmenu 3347 3348source "drivers/firmware/Kconfig" 3349 3350source "arch/mips/kvm/Kconfig" 3351 3352source "arch/mips/vdso/Kconfig" 3353