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_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 13 select ARCH_HAS_UBSAN_SANITIZE_ALL 14 select ARCH_HAS_GCOV_PROFILE_ALL 15 select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL 16 select ARCH_SUPPORTS_UPROBES 17 select ARCH_USE_BUILTIN_BSWAP 18 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT 19 select ARCH_USE_QUEUED_RWLOCKS 20 select ARCH_USE_QUEUED_SPINLOCKS 21 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU 22 select ARCH_WANT_IPC_PARSE_VERSION 23 select ARCH_WANT_LD_ORPHAN_WARN 24 select BUILDTIME_TABLE_SORT 25 select CLONE_BACKWARDS 26 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) 27 select CPU_PM if CPU_IDLE 28 select GENERIC_ATOMIC64 if !64BIT 29 select GENERIC_CMOS_UPDATE 30 select GENERIC_CPU_AUTOPROBE 31 select GENERIC_FIND_FIRST_BIT 32 select GENERIC_GETTIMEOFDAY 33 select GENERIC_IOMAP 34 select GENERIC_IRQ_PROBE 35 select GENERIC_IRQ_SHOW 36 select GENERIC_ISA_DMA if EISA 37 select GENERIC_LIB_ASHLDI3 38 select GENERIC_LIB_ASHRDI3 39 select GENERIC_LIB_CMPDI2 40 select GENERIC_LIB_LSHRDI3 41 select GENERIC_LIB_UCMPDI2 42 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC 43 select GENERIC_SMP_IDLE_THREAD 44 select GENERIC_TIME_VSYSCALL 45 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 46 select HANDLE_DOMAIN_IRQ 47 select HAVE_ARCH_COMPILER_H 48 select HAVE_ARCH_JUMP_LABEL 49 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT 50 select HAVE_ARCH_MMAP_RND_BITS if MMU 51 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 52 select HAVE_ARCH_SECCOMP_FILTER 53 select HAVE_ARCH_TRACEHOOK 54 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 55 select HAVE_ASM_MODVERSIONS 56 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS 57 select HAVE_CONTEXT_TRACKING 58 select HAVE_TIF_NOHZ 59 select HAVE_C_RECORDMCOUNT 60 select HAVE_DEBUG_KMEMLEAK 61 select HAVE_DEBUG_STACKOVERFLOW 62 select HAVE_DMA_CONTIGUOUS 63 select HAVE_DYNAMIC_FTRACE 64 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2 65 select HAVE_EXIT_THREAD 66 select HAVE_FAST_GUP 67 select HAVE_FTRACE_MCOUNT_RECORD 68 select HAVE_FUNCTION_GRAPH_TRACER 69 select HAVE_FUNCTION_TRACER 70 select HAVE_GCC_PLUGINS 71 select HAVE_GENERIC_VDSO 72 select HAVE_IDE 73 select HAVE_IOREMAP_PROT 74 select HAVE_IRQ_EXIT_ON_IRQ_STACK 75 select HAVE_IRQ_TIME_ACCOUNTING 76 select HAVE_KPROBES 77 select HAVE_KRETPROBES 78 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION 79 select HAVE_MOD_ARCH_SPECIFIC 80 select HAVE_NMI 81 select HAVE_PERF_EVENTS 82 select HAVE_PERF_REGS 83 select HAVE_PERF_USER_STACK_DUMP 84 select HAVE_REGS_AND_STACK_ACCESS_API 85 select HAVE_RSEQ 86 select HAVE_SPARSE_SYSCALL_NR 87 select HAVE_STACKPROTECTOR 88 select HAVE_SYSCALL_TRACEPOINTS 89 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP 90 select IRQ_FORCED_THREADING 91 select ISA if EISA 92 select MODULES_USE_ELF_REL if MODULES 93 select MODULES_USE_ELF_RELA if MODULES && 64BIT 94 select PERF_USE_VMALLOC 95 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 96 select RTC_LIB 97 select SET_FS 98 select SYSCTL_EXCEPTION_TRACE 99 select VIRT_TO_BUS 100 select ARCH_HAS_ELFCORE_COMPAT 101 102config MIPS_FIXUP_BIGPHYS_ADDR 103 bool 104 105config MIPS_GENERIC 106 bool 107 108config MACH_INGENIC 109 bool 110 select SYS_SUPPORTS_32BIT_KERNEL 111 select SYS_SUPPORTS_LITTLE_ENDIAN 112 select SYS_SUPPORTS_ZBOOT 113 select DMA_NONCOHERENT 114 select IRQ_MIPS_CPU 115 select PINCTRL 116 select GPIOLIB 117 select COMMON_CLK 118 select GENERIC_IRQ_CHIP 119 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 120 select USE_OF 121 select CPU_SUPPORTS_CPUFREQ 122 select MIPS_EXTERNAL_TIMER 123 124menu "Machine selection" 125 126choice 127 prompt "System type" 128 default MIPS_GENERIC_KERNEL 129 130config MIPS_GENERIC_KERNEL 131 bool "Generic board-agnostic MIPS kernel" 132 select ARCH_HAS_SETUP_DMA_OPS 133 select MIPS_GENERIC 134 select BOOT_RAW 135 select BUILTIN_DTB 136 select CEVT_R4K 137 select CLKSRC_MIPS_GIC 138 select COMMON_CLK 139 select CPU_MIPSR2_IRQ_EI 140 select CPU_MIPSR2_IRQ_VI 141 select CSRC_R4K 142 select DMA_NONCOHERENT 143 select HAVE_PCI 144 select IRQ_MIPS_CPU 145 select MIPS_AUTO_PFN_OFFSET 146 select MIPS_CPU_SCACHE 147 select MIPS_GIC 148 select MIPS_L1_CACHE_SHIFT_7 149 select NO_EXCEPT_FILL 150 select PCI_DRIVERS_GENERIC 151 select SMP_UP if SMP 152 select SWAP_IO_SPACE 153 select SYS_HAS_CPU_MIPS32_R1 154 select SYS_HAS_CPU_MIPS32_R2 155 select SYS_HAS_CPU_MIPS32_R6 156 select SYS_HAS_CPU_MIPS64_R1 157 select SYS_HAS_CPU_MIPS64_R2 158 select SYS_HAS_CPU_MIPS64_R6 159 select SYS_SUPPORTS_32BIT_KERNEL 160 select SYS_SUPPORTS_64BIT_KERNEL 161 select SYS_SUPPORTS_BIG_ENDIAN 162 select SYS_SUPPORTS_HIGHMEM 163 select SYS_SUPPORTS_LITTLE_ENDIAN 164 select SYS_SUPPORTS_MICROMIPS 165 select SYS_SUPPORTS_MIPS16 166 select SYS_SUPPORTS_MIPS_CPS 167 select SYS_SUPPORTS_MULTITHREADING 168 select SYS_SUPPORTS_RELOCATABLE 169 select SYS_SUPPORTS_SMARTMIPS 170 select SYS_SUPPORTS_ZBOOT 171 select UHI_BOOT 172 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 173 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 174 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 175 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 176 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 177 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 178 select USE_OF 179 help 180 Select this to build a kernel which aims to support multiple boards, 181 generally using a flattened device tree passed from the bootloader 182 using the boot protocol defined in the UHI (Unified Hosting 183 Interface) specification. 184 185config MIPS_ALCHEMY 186 bool "Alchemy processor based machines" 187 select PHYS_ADDR_T_64BIT 188 select CEVT_R4K 189 select CSRC_R4K 190 select IRQ_MIPS_CPU 191 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is 192 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 193 select SYS_HAS_CPU_MIPS32_R1 194 select SYS_SUPPORTS_32BIT_KERNEL 195 select SYS_SUPPORTS_APM_EMULATION 196 select GPIOLIB 197 select SYS_SUPPORTS_ZBOOT 198 select COMMON_CLK 199 200config AR7 201 bool "Texas Instruments AR7" 202 select BOOT_ELF32 203 select DMA_NONCOHERENT 204 select CEVT_R4K 205 select CSRC_R4K 206 select IRQ_MIPS_CPU 207 select NO_EXCEPT_FILL 208 select SWAP_IO_SPACE 209 select SYS_HAS_CPU_MIPS32_R1 210 select SYS_HAS_EARLY_PRINTK 211 select SYS_SUPPORTS_32BIT_KERNEL 212 select SYS_SUPPORTS_LITTLE_ENDIAN 213 select SYS_SUPPORTS_MIPS16 214 select SYS_SUPPORTS_ZBOOT_UART16550 215 select GPIOLIB 216 select VLYNQ 217 select HAVE_LEGACY_CLK 218 help 219 Support for the Texas Instruments AR7 System-on-a-Chip 220 family: TNETD7100, 7200 and 7300. 221 222config ATH25 223 bool "Atheros AR231x/AR531x SoC support" 224 select CEVT_R4K 225 select CSRC_R4K 226 select DMA_NONCOHERENT 227 select IRQ_MIPS_CPU 228 select IRQ_DOMAIN 229 select SYS_HAS_CPU_MIPS32_R1 230 select SYS_SUPPORTS_BIG_ENDIAN 231 select SYS_SUPPORTS_32BIT_KERNEL 232 select SYS_HAS_EARLY_PRINTK 233 help 234 Support for Atheros AR231x and Atheros AR531x based boards 235 236config ATH79 237 bool "Atheros AR71XX/AR724X/AR913X based boards" 238 select ARCH_HAS_RESET_CONTROLLER 239 select BOOT_RAW 240 select CEVT_R4K 241 select CSRC_R4K 242 select DMA_NONCOHERENT 243 select GPIOLIB 244 select PINCTRL 245 select COMMON_CLK 246 select IRQ_MIPS_CPU 247 select SYS_HAS_CPU_MIPS32_R2 248 select SYS_HAS_EARLY_PRINTK 249 select SYS_SUPPORTS_32BIT_KERNEL 250 select SYS_SUPPORTS_BIG_ENDIAN 251 select SYS_SUPPORTS_MIPS16 252 select SYS_SUPPORTS_ZBOOT_UART_PROM 253 select USE_OF 254 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 255 help 256 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 257 258config BMIPS_GENERIC 259 bool "Broadcom Generic BMIPS kernel" 260 select ARCH_HAS_RESET_CONTROLLER 261 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 262 select ARCH_HAS_PHYS_TO_DMA 263 select BOOT_RAW 264 select NO_EXCEPT_FILL 265 select USE_OF 266 select CEVT_R4K 267 select CSRC_R4K 268 select SYNC_R4K 269 select COMMON_CLK 270 select BCM6345_L1_IRQ 271 select BCM7038_L1_IRQ 272 select BCM7120_L2_IRQ 273 select BRCMSTB_L2_IRQ 274 select IRQ_MIPS_CPU 275 select DMA_NONCOHERENT 276 select SYS_SUPPORTS_32BIT_KERNEL 277 select SYS_SUPPORTS_LITTLE_ENDIAN 278 select SYS_SUPPORTS_BIG_ENDIAN 279 select SYS_SUPPORTS_HIGHMEM 280 select SYS_HAS_CPU_BMIPS32_3300 281 select SYS_HAS_CPU_BMIPS4350 282 select SYS_HAS_CPU_BMIPS4380 283 select SYS_HAS_CPU_BMIPS5000 284 select SWAP_IO_SPACE 285 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 286 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 287 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 288 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 289 select HARDIRQS_SW_RESEND 290 help 291 Build a generic DT-based kernel image that boots on select 292 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 293 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 294 must be set appropriately for your board. 295 296config BCM47XX 297 bool "Broadcom BCM47XX based boards" 298 select BOOT_RAW 299 select CEVT_R4K 300 select CSRC_R4K 301 select DMA_NONCOHERENT 302 select HAVE_PCI 303 select IRQ_MIPS_CPU 304 select SYS_HAS_CPU_MIPS32_R1 305 select NO_EXCEPT_FILL 306 select SYS_SUPPORTS_32BIT_KERNEL 307 select SYS_SUPPORTS_LITTLE_ENDIAN 308 select SYS_SUPPORTS_MIPS16 309 select SYS_SUPPORTS_ZBOOT 310 select SYS_HAS_EARLY_PRINTK 311 select USE_GENERIC_EARLY_PRINTK_8250 312 select GPIOLIB 313 select LEDS_GPIO_REGISTER 314 select BCM47XX_NVRAM 315 select BCM47XX_SPROM 316 select BCM47XX_SSB if !BCM47XX_BCMA 317 help 318 Support for BCM47XX based boards 319 320config BCM63XX 321 bool "Broadcom BCM63XX based boards" 322 select BOOT_RAW 323 select CEVT_R4K 324 select CSRC_R4K 325 select SYNC_R4K 326 select DMA_NONCOHERENT 327 select IRQ_MIPS_CPU 328 select SYS_SUPPORTS_32BIT_KERNEL 329 select SYS_SUPPORTS_BIG_ENDIAN 330 select SYS_HAS_EARLY_PRINTK 331 select SWAP_IO_SPACE 332 select GPIOLIB 333 select MIPS_L1_CACHE_SHIFT_4 334 select CLKDEV_LOOKUP 335 select HAVE_LEGACY_CLK 336 help 337 Support for BCM63XX based boards 338 339config MIPS_COBALT 340 bool "Cobalt Server" 341 select CEVT_R4K 342 select CSRC_R4K 343 select CEVT_GT641XX 344 select DMA_NONCOHERENT 345 select FORCE_PCI 346 select I8253 347 select I8259 348 select IRQ_MIPS_CPU 349 select IRQ_GT641XX 350 select PCI_GT64XXX_PCI0 351 select SYS_HAS_CPU_NEVADA 352 select SYS_HAS_EARLY_PRINTK 353 select SYS_SUPPORTS_32BIT_KERNEL 354 select SYS_SUPPORTS_64BIT_KERNEL 355 select SYS_SUPPORTS_LITTLE_ENDIAN 356 select USE_GENERIC_EARLY_PRINTK_8250 357 358config MACH_DECSTATION 359 bool "DECstations" 360 select BOOT_ELF32 361 select CEVT_DS1287 362 select CEVT_R4K if CPU_R4X00 363 select CSRC_IOASIC 364 select CSRC_R4K if CPU_R4X00 365 select CPU_DADDI_WORKAROUNDS if 64BIT 366 select CPU_R4000_WORKAROUNDS if 64BIT 367 select CPU_R4400_WORKAROUNDS if 64BIT 368 select DMA_NONCOHERENT 369 select NO_IOPORT_MAP 370 select IRQ_MIPS_CPU 371 select SYS_HAS_CPU_R3000 372 select SYS_HAS_CPU_R4X00 373 select SYS_SUPPORTS_32BIT_KERNEL 374 select SYS_SUPPORTS_64BIT_KERNEL 375 select SYS_SUPPORTS_LITTLE_ENDIAN 376 select SYS_SUPPORTS_128HZ 377 select SYS_SUPPORTS_256HZ 378 select SYS_SUPPORTS_1024HZ 379 select MIPS_L1_CACHE_SHIFT_4 380 help 381 This enables support for DEC's MIPS based workstations. For details 382 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 383 DECstation porting pages on <http://decstation.unix-ag.org/>. 384 385 If you have one of the following DECstation Models you definitely 386 want to choose R4xx0 for the CPU Type: 387 388 DECstation 5000/50 389 DECstation 5000/150 390 DECstation 5000/260 391 DECsystem 5900/260 392 393 otherwise choose R3000. 394 395config MACH_JAZZ 396 bool "Jazz family of machines" 397 select ARC_MEMORY 398 select ARC_PROMLIB 399 select ARCH_MIGHT_HAVE_PC_PARPORT 400 select ARCH_MIGHT_HAVE_PC_SERIO 401 select DMA_OPS 402 select FW_ARC 403 select FW_ARC32 404 select ARCH_MAY_HAVE_PC_FDC 405 select CEVT_R4K 406 select CSRC_R4K 407 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 408 select GENERIC_ISA_DMA 409 select HAVE_PCSPKR_PLATFORM 410 select IRQ_MIPS_CPU 411 select I8253 412 select I8259 413 select ISA 414 select SYS_HAS_CPU_R4X00 415 select SYS_SUPPORTS_32BIT_KERNEL 416 select SYS_SUPPORTS_64BIT_KERNEL 417 select SYS_SUPPORTS_100HZ 418 select SYS_SUPPORTS_LITTLE_ENDIAN 419 help 420 This a family of machines based on the MIPS R4030 chipset which was 421 used by several vendors to build RISC/os and Windows NT workstations. 422 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 423 Olivetti M700-10 workstations. 424 425config MACH_INGENIC_SOC 426 bool "Ingenic SoC based machines" 427 select MIPS_GENERIC 428 select MACH_INGENIC 429 select SYS_SUPPORTS_ZBOOT_UART16550 430 431config LANTIQ 432 bool "Lantiq based platforms" 433 select DMA_NONCOHERENT 434 select IRQ_MIPS_CPU 435 select CEVT_R4K 436 select CSRC_R4K 437 select SYS_HAS_CPU_MIPS32_R1 438 select SYS_HAS_CPU_MIPS32_R2 439 select SYS_SUPPORTS_BIG_ENDIAN 440 select SYS_SUPPORTS_32BIT_KERNEL 441 select SYS_SUPPORTS_MIPS16 442 select SYS_SUPPORTS_MULTITHREADING 443 select SYS_SUPPORTS_VPE_LOADER 444 select SYS_HAS_EARLY_PRINTK 445 select GPIOLIB 446 select SWAP_IO_SPACE 447 select BOOT_RAW 448 select CLKDEV_LOOKUP 449 select HAVE_LEGACY_CLK 450 select USE_OF 451 select PINCTRL 452 select PINCTRL_LANTIQ 453 select ARCH_HAS_RESET_CONTROLLER 454 select RESET_CONTROLLER 455 456config MACH_LOONGSON32 457 bool "Loongson 32-bit family of machines" 458 select SYS_SUPPORTS_ZBOOT 459 help 460 This enables support for the Loongson-1 family of machines. 461 462 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 463 the Institute of Computing Technology (ICT), Chinese Academy of 464 Sciences (CAS). 465 466config MACH_LOONGSON2EF 467 bool "Loongson-2E/F family of machines" 468 select SYS_SUPPORTS_ZBOOT 469 help 470 This enables the support of early Loongson-2E/F family of machines. 471 472config MACH_LOONGSON64 473 bool "Loongson 64-bit family of machines" 474 select ARCH_SPARSEMEM_ENABLE 475 select ARCH_MIGHT_HAVE_PC_PARPORT 476 select ARCH_MIGHT_HAVE_PC_SERIO 477 select GENERIC_ISA_DMA_SUPPORT_BROKEN 478 select BOOT_ELF32 479 select BOARD_SCACHE 480 select CSRC_R4K 481 select CEVT_R4K 482 select CPU_HAS_WB 483 select FORCE_PCI 484 select ISA 485 select I8259 486 select IRQ_MIPS_CPU 487 select NO_EXCEPT_FILL 488 select NR_CPUS_DEFAULT_64 489 select USE_GENERIC_EARLY_PRINTK_8250 490 select PCI_DRIVERS_GENERIC 491 select SYS_HAS_CPU_LOONGSON64 492 select SYS_HAS_EARLY_PRINTK 493 select SYS_SUPPORTS_SMP 494 select SYS_SUPPORTS_HOTPLUG_CPU 495 select SYS_SUPPORTS_NUMA 496 select SYS_SUPPORTS_64BIT_KERNEL 497 select SYS_SUPPORTS_HIGHMEM 498 select SYS_SUPPORTS_LITTLE_ENDIAN 499 select SYS_SUPPORTS_ZBOOT 500 select SYS_SUPPORTS_RELOCATABLE 501 select ZONE_DMA32 502 select COMMON_CLK 503 select USE_OF 504 select BUILTIN_DTB 505 select PCI_HOST_GENERIC 506 help 507 This enables the support of Loongson-2/3 family of machines. 508 509 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 510 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 511 and Loongson-2F which will be removed), developed by the Institute 512 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 513 514config MACH_PISTACHIO 515 bool "IMG Pistachio SoC based boards" 516 select BOOT_ELF32 517 select BOOT_RAW 518 select CEVT_R4K 519 select CLKSRC_MIPS_GIC 520 select COMMON_CLK 521 select CSRC_R4K 522 select DMA_NONCOHERENT 523 select GPIOLIB 524 select IRQ_MIPS_CPU 525 select MFD_SYSCON 526 select MIPS_CPU_SCACHE 527 select MIPS_GIC 528 select PINCTRL 529 select REGULATOR 530 select SYS_HAS_CPU_MIPS32_R2 531 select SYS_SUPPORTS_32BIT_KERNEL 532 select SYS_SUPPORTS_LITTLE_ENDIAN 533 select SYS_SUPPORTS_MIPS_CPS 534 select SYS_SUPPORTS_MULTITHREADING 535 select SYS_SUPPORTS_RELOCATABLE 536 select SYS_SUPPORTS_ZBOOT 537 select SYS_HAS_EARLY_PRINTK 538 select USE_GENERIC_EARLY_PRINTK_8250 539 select USE_OF 540 help 541 This enables support for the IMG Pistachio SoC platform. 542 543config MIPS_MALTA 544 bool "MIPS Malta board" 545 select ARCH_MAY_HAVE_PC_FDC 546 select ARCH_MIGHT_HAVE_PC_PARPORT 547 select ARCH_MIGHT_HAVE_PC_SERIO 548 select BOOT_ELF32 549 select BOOT_RAW 550 select BUILTIN_DTB 551 select CEVT_R4K 552 select CLKSRC_MIPS_GIC 553 select COMMON_CLK 554 select CSRC_R4K 555 select DMA_NONCOHERENT 556 select GENERIC_ISA_DMA 557 select HAVE_PCSPKR_PLATFORM 558 select HAVE_PCI 559 select I8253 560 select I8259 561 select IRQ_MIPS_CPU 562 select MIPS_BONITO64 563 select MIPS_CPU_SCACHE 564 select MIPS_GIC 565 select MIPS_L1_CACHE_SHIFT_6 566 select MIPS_MSC 567 select PCI_GT64XXX_PCI0 568 select SMP_UP if SMP 569 select SWAP_IO_SPACE 570 select SYS_HAS_CPU_MIPS32_R1 571 select SYS_HAS_CPU_MIPS32_R2 572 select SYS_HAS_CPU_MIPS32_R3_5 573 select SYS_HAS_CPU_MIPS32_R5 574 select SYS_HAS_CPU_MIPS32_R6 575 select SYS_HAS_CPU_MIPS64_R1 576 select SYS_HAS_CPU_MIPS64_R2 577 select SYS_HAS_CPU_MIPS64_R6 578 select SYS_HAS_CPU_NEVADA 579 select SYS_HAS_CPU_RM7000 580 select SYS_SUPPORTS_32BIT_KERNEL 581 select SYS_SUPPORTS_64BIT_KERNEL 582 select SYS_SUPPORTS_BIG_ENDIAN 583 select SYS_SUPPORTS_HIGHMEM 584 select SYS_SUPPORTS_LITTLE_ENDIAN 585 select SYS_SUPPORTS_MICROMIPS 586 select SYS_SUPPORTS_MIPS16 587 select SYS_SUPPORTS_MIPS_CMP 588 select SYS_SUPPORTS_MIPS_CPS 589 select SYS_SUPPORTS_MULTITHREADING 590 select SYS_SUPPORTS_RELOCATABLE 591 select SYS_SUPPORTS_SMARTMIPS 592 select SYS_SUPPORTS_VPE_LOADER 593 select SYS_SUPPORTS_ZBOOT 594 select USE_OF 595 select WAR_ICACHE_REFILLS 596 select ZONE_DMA32 if 64BIT 597 help 598 This enables support for the MIPS Technologies Malta evaluation 599 board. 600 601config MACH_PIC32 602 bool "Microchip PIC32 Family" 603 help 604 This enables support for the Microchip PIC32 family of platforms. 605 606 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 607 microcontrollers. 608 609config MACH_VR41XX 610 bool "NEC VR4100 series based machines" 611 select CEVT_R4K 612 select CSRC_R4K 613 select SYS_HAS_CPU_VR41XX 614 select SYS_SUPPORTS_MIPS16 615 select GPIOLIB 616 617config MACH_NINTENDO64 618 bool "Nintendo 64 console" 619 select CEVT_R4K 620 select CSRC_R4K 621 select SYS_HAS_CPU_R4300 622 select SYS_SUPPORTS_BIG_ENDIAN 623 select SYS_SUPPORTS_ZBOOT 624 select SYS_SUPPORTS_32BIT_KERNEL 625 select SYS_SUPPORTS_64BIT_KERNEL 626 select DMA_NONCOHERENT 627 select IRQ_MIPS_CPU 628 629config RALINK 630 bool "Ralink based machines" 631 select CEVT_R4K 632 select CSRC_R4K 633 select BOOT_RAW 634 select DMA_NONCOHERENT 635 select IRQ_MIPS_CPU 636 select USE_OF 637 select SYS_HAS_CPU_MIPS32_R1 638 select SYS_HAS_CPU_MIPS32_R2 639 select SYS_SUPPORTS_32BIT_KERNEL 640 select SYS_SUPPORTS_LITTLE_ENDIAN 641 select SYS_SUPPORTS_MIPS16 642 select SYS_SUPPORTS_ZBOOT 643 select SYS_HAS_EARLY_PRINTK 644 select CLKDEV_LOOKUP 645 select ARCH_HAS_RESET_CONTROLLER 646 select RESET_CONTROLLER 647 648config MACH_REALTEK_RTL 649 bool "Realtek RTL838x/RTL839x based machines" 650 select MIPS_GENERIC 651 select DMA_NONCOHERENT 652 select IRQ_MIPS_CPU 653 select CSRC_R4K 654 select CEVT_R4K 655 select SYS_HAS_CPU_MIPS32_R1 656 select SYS_HAS_CPU_MIPS32_R2 657 select SYS_SUPPORTS_BIG_ENDIAN 658 select SYS_SUPPORTS_32BIT_KERNEL 659 select SYS_SUPPORTS_MIPS16 660 select SYS_SUPPORTS_MULTITHREADING 661 select SYS_SUPPORTS_VPE_LOADER 662 select SYS_HAS_EARLY_PRINTK 663 select SYS_HAS_EARLY_PRINTK_8250 664 select USE_GENERIC_EARLY_PRINTK_8250 665 select BOOT_RAW 666 select PINCTRL 667 select USE_OF 668 669config SGI_IP22 670 bool "SGI IP22 (Indy/Indigo2)" 671 select ARC_MEMORY 672 select ARC_PROMLIB 673 select FW_ARC 674 select FW_ARC32 675 select ARCH_MIGHT_HAVE_PC_SERIO 676 select BOOT_ELF32 677 select CEVT_R4K 678 select CSRC_R4K 679 select DEFAULT_SGI_PARTITION 680 select DMA_NONCOHERENT 681 select HAVE_EISA 682 select I8253 683 select I8259 684 select IP22_CPU_SCACHE 685 select IRQ_MIPS_CPU 686 select GENERIC_ISA_DMA_SUPPORT_BROKEN 687 select SGI_HAS_I8042 688 select SGI_HAS_INDYDOG 689 select SGI_HAS_HAL2 690 select SGI_HAS_SEEQ 691 select SGI_HAS_WD93 692 select SGI_HAS_ZILOG 693 select SWAP_IO_SPACE 694 select SYS_HAS_CPU_R4X00 695 select SYS_HAS_CPU_R5000 696 select SYS_HAS_EARLY_PRINTK 697 select SYS_SUPPORTS_32BIT_KERNEL 698 select SYS_SUPPORTS_64BIT_KERNEL 699 select SYS_SUPPORTS_BIG_ENDIAN 700 select WAR_R4600_V1_INDEX_ICACHEOP 701 select WAR_R4600_V1_HIT_CACHEOP 702 select WAR_R4600_V2_HIT_CACHEOP 703 select MIPS_L1_CACHE_SHIFT_7 704 help 705 This are the SGI Indy, Challenge S and Indigo2, as well as certain 706 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 707 that runs on these, say Y here. 708 709config SGI_IP27 710 bool "SGI IP27 (Origin200/2000)" 711 select ARCH_HAS_PHYS_TO_DMA 712 select ARCH_SPARSEMEM_ENABLE 713 select FW_ARC 714 select FW_ARC64 715 select ARC_CMDLINE_ONLY 716 select BOOT_ELF64 717 select DEFAULT_SGI_PARTITION 718 select FORCE_PCI 719 select SYS_HAS_EARLY_PRINTK 720 select HAVE_PCI 721 select IRQ_MIPS_CPU 722 select IRQ_DOMAIN_HIERARCHY 723 select NR_CPUS_DEFAULT_64 724 select PCI_DRIVERS_GENERIC 725 select PCI_XTALK_BRIDGE 726 select SYS_HAS_CPU_R10000 727 select SYS_SUPPORTS_64BIT_KERNEL 728 select SYS_SUPPORTS_BIG_ENDIAN 729 select SYS_SUPPORTS_NUMA 730 select SYS_SUPPORTS_SMP 731 select WAR_R10000_LLSC 732 select MIPS_L1_CACHE_SHIFT_7 733 select NUMA 734 help 735 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 736 workstations. To compile a Linux kernel that runs on these, say Y 737 here. 738 739config SGI_IP28 740 bool "SGI IP28 (Indigo2 R10k)" 741 select ARC_MEMORY 742 select ARC_PROMLIB 743 select FW_ARC 744 select FW_ARC64 745 select ARCH_MIGHT_HAVE_PC_SERIO 746 select BOOT_ELF64 747 select CEVT_R4K 748 select CSRC_R4K 749 select DEFAULT_SGI_PARTITION 750 select DMA_NONCOHERENT 751 select GENERIC_ISA_DMA_SUPPORT_BROKEN 752 select IRQ_MIPS_CPU 753 select HAVE_EISA 754 select I8253 755 select I8259 756 select SGI_HAS_I8042 757 select SGI_HAS_INDYDOG 758 select SGI_HAS_HAL2 759 select SGI_HAS_SEEQ 760 select SGI_HAS_WD93 761 select SGI_HAS_ZILOG 762 select SWAP_IO_SPACE 763 select SYS_HAS_CPU_R10000 764 select SYS_HAS_EARLY_PRINTK 765 select SYS_SUPPORTS_64BIT_KERNEL 766 select SYS_SUPPORTS_BIG_ENDIAN 767 select WAR_R10000_LLSC 768 select MIPS_L1_CACHE_SHIFT_7 769 help 770 This is the SGI Indigo2 with R10000 processor. To compile a Linux 771 kernel that runs on these, say Y here. 772 773config SGI_IP30 774 bool "SGI IP30 (Octane/Octane2)" 775 select ARCH_HAS_PHYS_TO_DMA 776 select FW_ARC 777 select FW_ARC64 778 select BOOT_ELF64 779 select CEVT_R4K 780 select CSRC_R4K 781 select FORCE_PCI 782 select SYNC_R4K if SMP 783 select ZONE_DMA32 784 select HAVE_PCI 785 select IRQ_MIPS_CPU 786 select IRQ_DOMAIN_HIERARCHY 787 select NR_CPUS_DEFAULT_2 788 select PCI_DRIVERS_GENERIC 789 select PCI_XTALK_BRIDGE 790 select SYS_HAS_EARLY_PRINTK 791 select SYS_HAS_CPU_R10000 792 select SYS_SUPPORTS_64BIT_KERNEL 793 select SYS_SUPPORTS_BIG_ENDIAN 794 select SYS_SUPPORTS_SMP 795 select WAR_R10000_LLSC 796 select MIPS_L1_CACHE_SHIFT_7 797 select ARC_MEMORY 798 help 799 These are the SGI Octane and Octane2 graphics workstations. To 800 compile a Linux kernel that runs on these, say Y here. 801 802config SGI_IP32 803 bool "SGI IP32 (O2)" 804 select ARC_MEMORY 805 select ARC_PROMLIB 806 select ARCH_HAS_PHYS_TO_DMA 807 select FW_ARC 808 select FW_ARC32 809 select BOOT_ELF32 810 select CEVT_R4K 811 select CSRC_R4K 812 select DMA_NONCOHERENT 813 select HAVE_PCI 814 select IRQ_MIPS_CPU 815 select R5000_CPU_SCACHE 816 select RM7000_CPU_SCACHE 817 select SYS_HAS_CPU_R5000 818 select SYS_HAS_CPU_R10000 if BROKEN 819 select SYS_HAS_CPU_RM7000 820 select SYS_HAS_CPU_NEVADA 821 select SYS_SUPPORTS_64BIT_KERNEL 822 select SYS_SUPPORTS_BIG_ENDIAN 823 select WAR_ICACHE_REFILLS 824 help 825 If you want this kernel to run on SGI O2 workstation, say Y here. 826 827config SIBYTE_CRHINE 828 bool "Sibyte BCM91120C-CRhine" 829 select BOOT_ELF32 830 select SIBYTE_BCM1120 831 select SWAP_IO_SPACE 832 select SYS_HAS_CPU_SB1 833 select SYS_SUPPORTS_BIG_ENDIAN 834 select SYS_SUPPORTS_LITTLE_ENDIAN 835 836config SIBYTE_CARMEL 837 bool "Sibyte BCM91120x-Carmel" 838 select BOOT_ELF32 839 select SIBYTE_BCM1120 840 select SWAP_IO_SPACE 841 select SYS_HAS_CPU_SB1 842 select SYS_SUPPORTS_BIG_ENDIAN 843 select SYS_SUPPORTS_LITTLE_ENDIAN 844 845config SIBYTE_CRHONE 846 bool "Sibyte BCM91125C-CRhone" 847 select BOOT_ELF32 848 select SIBYTE_BCM1125 849 select SWAP_IO_SPACE 850 select SYS_HAS_CPU_SB1 851 select SYS_SUPPORTS_BIG_ENDIAN 852 select SYS_SUPPORTS_HIGHMEM 853 select SYS_SUPPORTS_LITTLE_ENDIAN 854 855config SIBYTE_RHONE 856 bool "Sibyte BCM91125E-Rhone" 857 select BOOT_ELF32 858 select SIBYTE_BCM1125H 859 select SWAP_IO_SPACE 860 select SYS_HAS_CPU_SB1 861 select SYS_SUPPORTS_BIG_ENDIAN 862 select SYS_SUPPORTS_LITTLE_ENDIAN 863 864config SIBYTE_SWARM 865 bool "Sibyte BCM91250A-SWARM" 866 select BOOT_ELF32 867 select HAVE_PATA_PLATFORM 868 select SIBYTE_SB1250 869 select SWAP_IO_SPACE 870 select SYS_HAS_CPU_SB1 871 select SYS_SUPPORTS_BIG_ENDIAN 872 select SYS_SUPPORTS_HIGHMEM 873 select SYS_SUPPORTS_LITTLE_ENDIAN 874 select ZONE_DMA32 if 64BIT 875 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 876 877config SIBYTE_LITTLESUR 878 bool "Sibyte BCM91250C2-LittleSur" 879 select BOOT_ELF32 880 select HAVE_PATA_PLATFORM 881 select SIBYTE_SB1250 882 select SWAP_IO_SPACE 883 select SYS_HAS_CPU_SB1 884 select SYS_SUPPORTS_BIG_ENDIAN 885 select SYS_SUPPORTS_HIGHMEM 886 select SYS_SUPPORTS_LITTLE_ENDIAN 887 select ZONE_DMA32 if 64BIT 888 889config SIBYTE_SENTOSA 890 bool "Sibyte BCM91250E-Sentosa" 891 select BOOT_ELF32 892 select SIBYTE_SB1250 893 select SWAP_IO_SPACE 894 select SYS_HAS_CPU_SB1 895 select SYS_SUPPORTS_BIG_ENDIAN 896 select SYS_SUPPORTS_LITTLE_ENDIAN 897 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 898 899config SIBYTE_BIGSUR 900 bool "Sibyte BCM91480B-BigSur" 901 select BOOT_ELF32 902 select NR_CPUS_DEFAULT_4 903 select SIBYTE_BCM1x80 904 select SWAP_IO_SPACE 905 select SYS_HAS_CPU_SB1 906 select SYS_SUPPORTS_BIG_ENDIAN 907 select SYS_SUPPORTS_HIGHMEM 908 select SYS_SUPPORTS_LITTLE_ENDIAN 909 select ZONE_DMA32 if 64BIT 910 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 911 912config SNI_RM 913 bool "SNI RM200/300/400" 914 select ARC_MEMORY 915 select ARC_PROMLIB 916 select FW_ARC if CPU_LITTLE_ENDIAN 917 select FW_ARC32 if CPU_LITTLE_ENDIAN 918 select FW_SNIPROM if CPU_BIG_ENDIAN 919 select ARCH_MAY_HAVE_PC_FDC 920 select ARCH_MIGHT_HAVE_PC_PARPORT 921 select ARCH_MIGHT_HAVE_PC_SERIO 922 select BOOT_ELF32 923 select CEVT_R4K 924 select CSRC_R4K 925 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 926 select DMA_NONCOHERENT 927 select GENERIC_ISA_DMA 928 select HAVE_EISA 929 select HAVE_PCSPKR_PLATFORM 930 select HAVE_PCI 931 select IRQ_MIPS_CPU 932 select I8253 933 select I8259 934 select ISA 935 select MIPS_L1_CACHE_SHIFT_6 936 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 937 select SYS_HAS_CPU_R4X00 938 select SYS_HAS_CPU_R5000 939 select SYS_HAS_CPU_R10000 940 select R5000_CPU_SCACHE 941 select SYS_HAS_EARLY_PRINTK 942 select SYS_SUPPORTS_32BIT_KERNEL 943 select SYS_SUPPORTS_64BIT_KERNEL 944 select SYS_SUPPORTS_BIG_ENDIAN 945 select SYS_SUPPORTS_HIGHMEM 946 select SYS_SUPPORTS_LITTLE_ENDIAN 947 select WAR_R4600_V2_HIT_CACHEOP 948 help 949 The SNI RM200/300/400 are MIPS-based machines manufactured by 950 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 951 Technology and now in turn merged with Fujitsu. Say Y here to 952 support this machine type. 953 954config MACH_TX39XX 955 bool "Toshiba TX39 series based machines" 956 957config MACH_TX49XX 958 bool "Toshiba TX49 series based machines" 959 select WAR_TX49XX_ICACHE_INDEX_INV 960 961config MIKROTIK_RB532 962 bool "Mikrotik RB532 boards" 963 select CEVT_R4K 964 select CSRC_R4K 965 select DMA_NONCOHERENT 966 select HAVE_PCI 967 select IRQ_MIPS_CPU 968 select SYS_HAS_CPU_MIPS32_R1 969 select SYS_SUPPORTS_32BIT_KERNEL 970 select SYS_SUPPORTS_LITTLE_ENDIAN 971 select SWAP_IO_SPACE 972 select BOOT_RAW 973 select GPIOLIB 974 select MIPS_L1_CACHE_SHIFT_4 975 help 976 Support the Mikrotik(tm) RouterBoard 532 series, 977 based on the IDT RC32434 SoC. 978 979config CAVIUM_OCTEON_SOC 980 bool "Cavium Networks Octeon SoC based boards" 981 select CEVT_R4K 982 select ARCH_HAS_PHYS_TO_DMA 983 select HAVE_RAPIDIO 984 select PHYS_ADDR_T_64BIT 985 select SYS_SUPPORTS_64BIT_KERNEL 986 select SYS_SUPPORTS_BIG_ENDIAN 987 select EDAC_SUPPORT 988 select EDAC_ATOMIC_SCRUB 989 select SYS_SUPPORTS_LITTLE_ENDIAN 990 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 991 select SYS_HAS_EARLY_PRINTK 992 select SYS_HAS_CPU_CAVIUM_OCTEON 993 select HAVE_PCI 994 select HAVE_PLAT_DELAY 995 select HAVE_PLAT_FW_INIT_CMDLINE 996 select HAVE_PLAT_MEMCPY 997 select ZONE_DMA32 998 select HOLES_IN_ZONE 999 select GPIOLIB 1000 select USE_OF 1001 select ARCH_SPARSEMEM_ENABLE 1002 select SYS_SUPPORTS_SMP 1003 select NR_CPUS_DEFAULT_64 1004 select MIPS_NR_CPU_NR_MAP_1024 1005 select BUILTIN_DTB 1006 select MTD 1007 select MTD_COMPLEX_MAPPINGS 1008 select SWIOTLB 1009 select SYS_SUPPORTS_RELOCATABLE 1010 help 1011 This option supports all of the Octeon reference boards from Cavium 1012 Networks. It builds a kernel that dynamically determines the Octeon 1013 CPU type and supports all known board reference implementations. 1014 Some of the supported boards are: 1015 EBT3000 1016 EBH3000 1017 EBH3100 1018 Thunder 1019 Kodama 1020 Hikari 1021 Say Y here for most Octeon reference boards. 1022 1023config NLM_XLR_BOARD 1024 bool "Netlogic XLR/XLS based systems" 1025 select BOOT_ELF32 1026 select NLM_COMMON 1027 select SYS_HAS_CPU_XLR 1028 select SYS_SUPPORTS_SMP 1029 select HAVE_PCI 1030 select SWAP_IO_SPACE 1031 select SYS_SUPPORTS_32BIT_KERNEL 1032 select SYS_SUPPORTS_64BIT_KERNEL 1033 select PHYS_ADDR_T_64BIT 1034 select SYS_SUPPORTS_BIG_ENDIAN 1035 select SYS_SUPPORTS_HIGHMEM 1036 select NR_CPUS_DEFAULT_32 1037 select CEVT_R4K 1038 select CSRC_R4K 1039 select IRQ_MIPS_CPU 1040 select ZONE_DMA32 if 64BIT 1041 select SYNC_R4K 1042 select SYS_HAS_EARLY_PRINTK 1043 select SYS_SUPPORTS_ZBOOT 1044 select SYS_SUPPORTS_ZBOOT_UART16550 1045 help 1046 Support for systems based on Netlogic XLR and XLS processors. 1047 Say Y here if you have a XLR or XLS based board. 1048 1049config NLM_XLP_BOARD 1050 bool "Netlogic XLP based systems" 1051 select BOOT_ELF32 1052 select NLM_COMMON 1053 select SYS_HAS_CPU_XLP 1054 select SYS_SUPPORTS_SMP 1055 select HAVE_PCI 1056 select SYS_SUPPORTS_32BIT_KERNEL 1057 select SYS_SUPPORTS_64BIT_KERNEL 1058 select PHYS_ADDR_T_64BIT 1059 select GPIOLIB 1060 select SYS_SUPPORTS_BIG_ENDIAN 1061 select SYS_SUPPORTS_LITTLE_ENDIAN 1062 select SYS_SUPPORTS_HIGHMEM 1063 select NR_CPUS_DEFAULT_32 1064 select CEVT_R4K 1065 select CSRC_R4K 1066 select IRQ_MIPS_CPU 1067 select ZONE_DMA32 if 64BIT 1068 select SYNC_R4K 1069 select SYS_HAS_EARLY_PRINTK 1070 select USE_OF 1071 select SYS_SUPPORTS_ZBOOT 1072 select SYS_SUPPORTS_ZBOOT_UART16550 1073 help 1074 This board is based on Netlogic XLP Processor. 1075 Say Y here if you have a XLP based board. 1076 1077endchoice 1078 1079source "arch/mips/alchemy/Kconfig" 1080source "arch/mips/ath25/Kconfig" 1081source "arch/mips/ath79/Kconfig" 1082source "arch/mips/bcm47xx/Kconfig" 1083source "arch/mips/bcm63xx/Kconfig" 1084source "arch/mips/bmips/Kconfig" 1085source "arch/mips/generic/Kconfig" 1086source "arch/mips/ingenic/Kconfig" 1087source "arch/mips/jazz/Kconfig" 1088source "arch/mips/lantiq/Kconfig" 1089source "arch/mips/pic32/Kconfig" 1090source "arch/mips/pistachio/Kconfig" 1091source "arch/mips/ralink/Kconfig" 1092source "arch/mips/sgi-ip27/Kconfig" 1093source "arch/mips/sibyte/Kconfig" 1094source "arch/mips/txx9/Kconfig" 1095source "arch/mips/vr41xx/Kconfig" 1096source "arch/mips/cavium-octeon/Kconfig" 1097source "arch/mips/loongson2ef/Kconfig" 1098source "arch/mips/loongson32/Kconfig" 1099source "arch/mips/loongson64/Kconfig" 1100source "arch/mips/netlogic/Kconfig" 1101 1102endmenu 1103 1104config GENERIC_HWEIGHT 1105 bool 1106 default y 1107 1108config GENERIC_CALIBRATE_DELAY 1109 bool 1110 default y 1111 1112config SCHED_OMIT_FRAME_POINTER 1113 bool 1114 default y 1115 1116# 1117# Select some configuration options automatically based on user selections. 1118# 1119config FW_ARC 1120 bool 1121 1122config ARCH_MAY_HAVE_PC_FDC 1123 bool 1124 1125config BOOT_RAW 1126 bool 1127 1128config CEVT_BCM1480 1129 bool 1130 1131config CEVT_DS1287 1132 bool 1133 1134config CEVT_GT641XX 1135 bool 1136 1137config CEVT_R4K 1138 bool 1139 1140config CEVT_SB1250 1141 bool 1142 1143config CEVT_TXX9 1144 bool 1145 1146config CSRC_BCM1480 1147 bool 1148 1149config CSRC_IOASIC 1150 bool 1151 1152config CSRC_R4K 1153 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1154 bool 1155 1156config CSRC_SB1250 1157 bool 1158 1159config MIPS_CLOCK_VSYSCALL 1160 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1161 1162config GPIO_TXX9 1163 select GPIOLIB 1164 bool 1165 1166config FW_CFE 1167 bool 1168 1169config ARCH_SUPPORTS_UPROBES 1170 bool 1171 1172config DMA_PERDEV_COHERENT 1173 bool 1174 select ARCH_HAS_SETUP_DMA_OPS 1175 select DMA_NONCOHERENT 1176 1177config DMA_NONCOHERENT 1178 bool 1179 # 1180 # MIPS allows mixing "slightly different" Cacheability and Coherency 1181 # Attribute bits. It is believed that the uncached access through 1182 # KSEG1 and the implementation specific "uncached accelerated" used 1183 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1184 # significant advantages. 1185 # 1186 select ARCH_HAS_DMA_WRITE_COMBINE 1187 select ARCH_HAS_DMA_PREP_COHERENT 1188 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1189 select ARCH_HAS_DMA_SET_UNCACHED 1190 select DMA_NONCOHERENT_MMAP 1191 select NEED_DMA_MAP_STATE 1192 1193config SYS_HAS_EARLY_PRINTK 1194 bool 1195 1196config SYS_SUPPORTS_HOTPLUG_CPU 1197 bool 1198 1199config MIPS_BONITO64 1200 bool 1201 1202config MIPS_MSC 1203 bool 1204 1205config SYNC_R4K 1206 bool 1207 1208config NO_IOPORT_MAP 1209 def_bool n 1210 1211config GENERIC_CSUM 1212 def_bool CPU_NO_LOAD_STORE_LR 1213 1214config GENERIC_ISA_DMA 1215 bool 1216 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1217 select ISA_DMA_API 1218 1219config GENERIC_ISA_DMA_SUPPORT_BROKEN 1220 bool 1221 select GENERIC_ISA_DMA 1222 1223config HAVE_PLAT_DELAY 1224 bool 1225 1226config HAVE_PLAT_FW_INIT_CMDLINE 1227 bool 1228 1229config HAVE_PLAT_MEMCPY 1230 bool 1231 1232config ISA_DMA_API 1233 bool 1234 1235config HOLES_IN_ZONE 1236 bool 1237 1238config SYS_SUPPORTS_RELOCATABLE 1239 bool 1240 help 1241 Selected if the platform supports relocating the kernel. 1242 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1243 to allow access to command line and entropy sources. 1244 1245config MIPS_CBPF_JIT 1246 def_bool y 1247 depends on BPF_JIT && HAVE_CBPF_JIT 1248 1249config MIPS_EBPF_JIT 1250 def_bool y 1251 depends on BPF_JIT && HAVE_EBPF_JIT 1252 1253 1254# 1255# Endianness selection. Sufficiently obscure so many users don't know what to 1256# answer,so we try hard to limit the available choices. Also the use of a 1257# choice statement should be more obvious to the user. 1258# 1259choice 1260 prompt "Endianness selection" 1261 help 1262 Some MIPS machines can be configured for either little or big endian 1263 byte order. These modes require different kernels and a different 1264 Linux distribution. In general there is one preferred byteorder for a 1265 particular system but some systems are just as commonly used in the 1266 one or the other endianness. 1267 1268config CPU_BIG_ENDIAN 1269 bool "Big endian" 1270 depends on SYS_SUPPORTS_BIG_ENDIAN 1271 1272config CPU_LITTLE_ENDIAN 1273 bool "Little endian" 1274 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1275 1276endchoice 1277 1278config EXPORT_UASM 1279 bool 1280 1281config SYS_SUPPORTS_APM_EMULATION 1282 bool 1283 1284config SYS_SUPPORTS_BIG_ENDIAN 1285 bool 1286 1287config SYS_SUPPORTS_LITTLE_ENDIAN 1288 bool 1289 1290config SYS_SUPPORTS_HUGETLBFS 1291 bool 1292 depends on CPU_SUPPORTS_HUGEPAGES 1293 default y 1294 1295config MIPS_HUGE_TLB_SUPPORT 1296 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1297 1298config IRQ_MSP_SLP 1299 bool 1300 1301config IRQ_MSP_CIC 1302 bool 1303 1304config IRQ_TXX9 1305 bool 1306 1307config IRQ_GT641XX 1308 bool 1309 1310config PCI_GT64XXX_PCI0 1311 bool 1312 1313config PCI_XTALK_BRIDGE 1314 bool 1315 1316config NO_EXCEPT_FILL 1317 bool 1318 1319config MIPS_SPRAM 1320 bool 1321 1322config SWAP_IO_SPACE 1323 bool 1324 1325config SGI_HAS_INDYDOG 1326 bool 1327 1328config SGI_HAS_HAL2 1329 bool 1330 1331config SGI_HAS_SEEQ 1332 bool 1333 1334config SGI_HAS_WD93 1335 bool 1336 1337config SGI_HAS_ZILOG 1338 bool 1339 1340config SGI_HAS_I8042 1341 bool 1342 1343config DEFAULT_SGI_PARTITION 1344 bool 1345 1346config FW_ARC32 1347 bool 1348 1349config FW_SNIPROM 1350 bool 1351 1352config BOOT_ELF32 1353 bool 1354 1355config MIPS_L1_CACHE_SHIFT_4 1356 bool 1357 1358config MIPS_L1_CACHE_SHIFT_5 1359 bool 1360 1361config MIPS_L1_CACHE_SHIFT_6 1362 bool 1363 1364config MIPS_L1_CACHE_SHIFT_7 1365 bool 1366 1367config MIPS_L1_CACHE_SHIFT 1368 int 1369 default "7" if MIPS_L1_CACHE_SHIFT_7 1370 default "6" if MIPS_L1_CACHE_SHIFT_6 1371 default "5" if MIPS_L1_CACHE_SHIFT_5 1372 default "4" if MIPS_L1_CACHE_SHIFT_4 1373 default "5" 1374 1375config ARC_CMDLINE_ONLY 1376 bool 1377 1378config ARC_CONSOLE 1379 bool "ARC console support" 1380 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1381 1382config ARC_MEMORY 1383 bool 1384 1385config ARC_PROMLIB 1386 bool 1387 1388config FW_ARC64 1389 bool 1390 1391config BOOT_ELF64 1392 bool 1393 1394menu "CPU selection" 1395 1396choice 1397 prompt "CPU type" 1398 default CPU_R4X00 1399 1400config CPU_LOONGSON64 1401 bool "Loongson 64-bit CPU" 1402 depends on SYS_HAS_CPU_LOONGSON64 1403 select ARCH_HAS_PHYS_TO_DMA 1404 select CPU_MIPSR2 1405 select CPU_HAS_PREFETCH 1406 select CPU_SUPPORTS_64BIT_KERNEL 1407 select CPU_SUPPORTS_HIGHMEM 1408 select CPU_SUPPORTS_HUGEPAGES 1409 select CPU_SUPPORTS_MSA 1410 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1411 select CPU_MIPSR2_IRQ_VI 1412 select WEAK_ORDERING 1413 select WEAK_REORDERING_BEYOND_LLSC 1414 select MIPS_ASID_BITS_VARIABLE 1415 select MIPS_PGD_C0_CONTEXT 1416 select MIPS_L1_CACHE_SHIFT_6 1417 select GPIOLIB 1418 select SWIOTLB 1419 select HAVE_KVM 1420 help 1421 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1422 cores implements the MIPS64R2 instruction set with many extensions, 1423 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1424 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1425 Loongson-2E/2F is not covered here and will be removed in future. 1426 1427config LOONGSON3_ENHANCEMENT 1428 bool "New Loongson-3 CPU Enhancements" 1429 default n 1430 depends on CPU_LOONGSON64 1431 help 1432 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1433 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1434 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1435 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1436 Fast TLB refill support, etc. 1437 1438 This option enable those enhancements which are not probed at run 1439 time. If you want a generic kernel to run on all Loongson 3 machines, 1440 please say 'N' here. If you want a high-performance kernel to run on 1441 new Loongson-3 machines only, please say 'Y' here. 1442 1443config CPU_LOONGSON3_WORKAROUNDS 1444 bool "Old Loongson-3 LLSC Workarounds" 1445 default y if SMP 1446 depends on CPU_LOONGSON64 1447 help 1448 Loongson-3 processors have the llsc issues which require workarounds. 1449 Without workarounds the system may hang unexpectedly. 1450 1451 Newer Loongson-3 will fix these issues and no workarounds are needed. 1452 The workarounds have no significant side effect on them but may 1453 decrease the performance of the system so this option should be 1454 disabled unless the kernel is intended to be run on old systems. 1455 1456 If unsure, please say Y. 1457 1458config CPU_LOONGSON3_CPUCFG_EMULATION 1459 bool "Emulate the CPUCFG instruction on older Loongson cores" 1460 default y 1461 depends on CPU_LOONGSON64 1462 help 1463 Loongson-3A R4 and newer have the CPUCFG instruction available for 1464 userland to query CPU capabilities, much like CPUID on x86. This 1465 option provides emulation of the instruction on older Loongson 1466 cores, back to Loongson-3A1000. 1467 1468 If unsure, please say Y. 1469 1470config CPU_LOONGSON2E 1471 bool "Loongson 2E" 1472 depends on SYS_HAS_CPU_LOONGSON2E 1473 select CPU_LOONGSON2EF 1474 help 1475 The Loongson 2E processor implements the MIPS III instruction set 1476 with many extensions. 1477 1478 It has an internal FPGA northbridge, which is compatible to 1479 bonito64. 1480 1481config CPU_LOONGSON2F 1482 bool "Loongson 2F" 1483 depends on SYS_HAS_CPU_LOONGSON2F 1484 select CPU_LOONGSON2EF 1485 select GPIOLIB 1486 help 1487 The Loongson 2F processor implements the MIPS III instruction set 1488 with many extensions. 1489 1490 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1491 have a similar programming interface with FPGA northbridge used in 1492 Loongson2E. 1493 1494config CPU_LOONGSON1B 1495 bool "Loongson 1B" 1496 depends on SYS_HAS_CPU_LOONGSON1B 1497 select CPU_LOONGSON32 1498 select LEDS_GPIO_REGISTER 1499 help 1500 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1501 Release 1 instruction set and part of the MIPS32 Release 2 1502 instruction set. 1503 1504config CPU_LOONGSON1C 1505 bool "Loongson 1C" 1506 depends on SYS_HAS_CPU_LOONGSON1C 1507 select CPU_LOONGSON32 1508 select LEDS_GPIO_REGISTER 1509 help 1510 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1511 Release 1 instruction set and part of the MIPS32 Release 2 1512 instruction set. 1513 1514config CPU_MIPS32_R1 1515 bool "MIPS32 Release 1" 1516 depends on SYS_HAS_CPU_MIPS32_R1 1517 select CPU_HAS_PREFETCH 1518 select CPU_SUPPORTS_32BIT_KERNEL 1519 select CPU_SUPPORTS_HIGHMEM 1520 help 1521 Choose this option to build a kernel for release 1 or later of the 1522 MIPS32 architecture. Most modern embedded systems with a 32-bit 1523 MIPS processor are based on a MIPS32 processor. If you know the 1524 specific type of processor in your system, choose those that one 1525 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1526 Release 2 of the MIPS32 architecture is available since several 1527 years so chances are you even have a MIPS32 Release 2 processor 1528 in which case you should choose CPU_MIPS32_R2 instead for better 1529 performance. 1530 1531config CPU_MIPS32_R2 1532 bool "MIPS32 Release 2" 1533 depends on SYS_HAS_CPU_MIPS32_R2 1534 select CPU_HAS_PREFETCH 1535 select CPU_SUPPORTS_32BIT_KERNEL 1536 select CPU_SUPPORTS_HIGHMEM 1537 select CPU_SUPPORTS_MSA 1538 select HAVE_KVM 1539 help 1540 Choose this option to build a kernel for release 2 or later of the 1541 MIPS32 architecture. Most modern embedded systems with a 32-bit 1542 MIPS processor are based on a MIPS32 processor. If you know the 1543 specific type of processor in your system, choose those that one 1544 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1545 1546config CPU_MIPS32_R5 1547 bool "MIPS32 Release 5" 1548 depends on SYS_HAS_CPU_MIPS32_R5 1549 select CPU_HAS_PREFETCH 1550 select CPU_SUPPORTS_32BIT_KERNEL 1551 select CPU_SUPPORTS_HIGHMEM 1552 select CPU_SUPPORTS_MSA 1553 select HAVE_KVM 1554 select MIPS_O32_FP64_SUPPORT 1555 help 1556 Choose this option to build a kernel for release 5 or later of the 1557 MIPS32 architecture. New MIPS processors, starting with the Warrior 1558 family, are based on a MIPS32r5 processor. If you own an older 1559 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1560 1561config CPU_MIPS32_R6 1562 bool "MIPS32 Release 6" 1563 depends on SYS_HAS_CPU_MIPS32_R6 1564 select CPU_HAS_PREFETCH 1565 select CPU_NO_LOAD_STORE_LR 1566 select CPU_SUPPORTS_32BIT_KERNEL 1567 select CPU_SUPPORTS_HIGHMEM 1568 select CPU_SUPPORTS_MSA 1569 select HAVE_KVM 1570 select MIPS_O32_FP64_SUPPORT 1571 help 1572 Choose this option to build a kernel for release 6 or later of the 1573 MIPS32 architecture. New MIPS processors, starting with the Warrior 1574 family, are based on a MIPS32r6 processor. If you own an older 1575 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1576 1577config CPU_MIPS64_R1 1578 bool "MIPS64 Release 1" 1579 depends on SYS_HAS_CPU_MIPS64_R1 1580 select CPU_HAS_PREFETCH 1581 select CPU_SUPPORTS_32BIT_KERNEL 1582 select CPU_SUPPORTS_64BIT_KERNEL 1583 select CPU_SUPPORTS_HIGHMEM 1584 select CPU_SUPPORTS_HUGEPAGES 1585 help 1586 Choose this option to build a kernel for release 1 or later of the 1587 MIPS64 architecture. Many modern embedded systems with a 64-bit 1588 MIPS processor are based on a MIPS64 processor. If you know the 1589 specific type of processor in your system, choose those that one 1590 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1591 Release 2 of the MIPS64 architecture is available since several 1592 years so chances are you even have a MIPS64 Release 2 processor 1593 in which case you should choose CPU_MIPS64_R2 instead for better 1594 performance. 1595 1596config CPU_MIPS64_R2 1597 bool "MIPS64 Release 2" 1598 depends on SYS_HAS_CPU_MIPS64_R2 1599 select CPU_HAS_PREFETCH 1600 select CPU_SUPPORTS_32BIT_KERNEL 1601 select CPU_SUPPORTS_64BIT_KERNEL 1602 select CPU_SUPPORTS_HIGHMEM 1603 select CPU_SUPPORTS_HUGEPAGES 1604 select CPU_SUPPORTS_MSA 1605 select HAVE_KVM 1606 help 1607 Choose this option to build a kernel for release 2 or later of the 1608 MIPS64 architecture. Many modern embedded systems with a 64-bit 1609 MIPS processor are based on a MIPS64 processor. If you know the 1610 specific type of processor in your system, choose those that one 1611 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1612 1613config CPU_MIPS64_R5 1614 bool "MIPS64 Release 5" 1615 depends on SYS_HAS_CPU_MIPS64_R5 1616 select CPU_HAS_PREFETCH 1617 select CPU_SUPPORTS_32BIT_KERNEL 1618 select CPU_SUPPORTS_64BIT_KERNEL 1619 select CPU_SUPPORTS_HIGHMEM 1620 select CPU_SUPPORTS_HUGEPAGES 1621 select CPU_SUPPORTS_MSA 1622 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1623 select HAVE_KVM 1624 help 1625 Choose this option to build a kernel for release 5 or later of the 1626 MIPS64 architecture. This is a intermediate MIPS architecture 1627 release partly implementing release 6 features. Though there is no 1628 any hardware known to be based on this release. 1629 1630config CPU_MIPS64_R6 1631 bool "MIPS64 Release 6" 1632 depends on SYS_HAS_CPU_MIPS64_R6 1633 select CPU_HAS_PREFETCH 1634 select CPU_NO_LOAD_STORE_LR 1635 select CPU_SUPPORTS_32BIT_KERNEL 1636 select CPU_SUPPORTS_64BIT_KERNEL 1637 select CPU_SUPPORTS_HIGHMEM 1638 select CPU_SUPPORTS_HUGEPAGES 1639 select CPU_SUPPORTS_MSA 1640 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1641 select HAVE_KVM 1642 help 1643 Choose this option to build a kernel for release 6 or later of the 1644 MIPS64 architecture. New MIPS processors, starting with the Warrior 1645 family, are based on a MIPS64r6 processor. If you own an older 1646 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1647 1648config CPU_P5600 1649 bool "MIPS Warrior P5600" 1650 depends on SYS_HAS_CPU_P5600 1651 select CPU_HAS_PREFETCH 1652 select CPU_SUPPORTS_32BIT_KERNEL 1653 select CPU_SUPPORTS_HIGHMEM 1654 select CPU_SUPPORTS_MSA 1655 select CPU_SUPPORTS_CPUFREQ 1656 select CPU_MIPSR2_IRQ_VI 1657 select CPU_MIPSR2_IRQ_EI 1658 select HAVE_KVM 1659 select MIPS_O32_FP64_SUPPORT 1660 help 1661 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1662 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1663 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1664 level features like up to six P5600 calculation cores, CM2 with L2 1665 cache, IOCU/IOMMU (though might be unused depending on the system- 1666 specific IP core configuration), GIC, CPC, virtualisation module, 1667 eJTAG and PDtrace. 1668 1669config CPU_R3000 1670 bool "R3000" 1671 depends on SYS_HAS_CPU_R3000 1672 select CPU_HAS_WB 1673 select CPU_R3K_TLB 1674 select CPU_SUPPORTS_32BIT_KERNEL 1675 select CPU_SUPPORTS_HIGHMEM 1676 help 1677 Please make sure to pick the right CPU type. Linux/MIPS is not 1678 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1679 *not* work on R4000 machines and vice versa. However, since most 1680 of the supported machines have an R4000 (or similar) CPU, R4x00 1681 might be a safe bet. If the resulting kernel does not work, 1682 try to recompile with R3000. 1683 1684config CPU_TX39XX 1685 bool "R39XX" 1686 depends on SYS_HAS_CPU_TX39XX 1687 select CPU_SUPPORTS_32BIT_KERNEL 1688 select CPU_R3K_TLB 1689 1690config CPU_VR41XX 1691 bool "R41xx" 1692 depends on SYS_HAS_CPU_VR41XX 1693 select CPU_SUPPORTS_32BIT_KERNEL 1694 select CPU_SUPPORTS_64BIT_KERNEL 1695 help 1696 The options selects support for the NEC VR4100 series of processors. 1697 Only choose this option if you have one of these processors as a 1698 kernel built with this option will not run on any other type of 1699 processor or vice versa. 1700 1701config CPU_R4300 1702 bool "R4300" 1703 depends on SYS_HAS_CPU_R4300 1704 select CPU_SUPPORTS_32BIT_KERNEL 1705 select CPU_SUPPORTS_64BIT_KERNEL 1706 select CPU_HAS_LOAD_STORE_LR 1707 help 1708 MIPS Technologies R4300-series processors. 1709 1710config CPU_R4X00 1711 bool "R4x00" 1712 depends on SYS_HAS_CPU_R4X00 1713 select CPU_SUPPORTS_32BIT_KERNEL 1714 select CPU_SUPPORTS_64BIT_KERNEL 1715 select CPU_SUPPORTS_HUGEPAGES 1716 help 1717 MIPS Technologies R4000-series processors other than 4300, including 1718 the R4000, R4400, R4600, and 4700. 1719 1720config CPU_TX49XX 1721 bool "R49XX" 1722 depends on SYS_HAS_CPU_TX49XX 1723 select CPU_HAS_PREFETCH 1724 select CPU_SUPPORTS_32BIT_KERNEL 1725 select CPU_SUPPORTS_64BIT_KERNEL 1726 select CPU_SUPPORTS_HUGEPAGES 1727 1728config CPU_R5000 1729 bool "R5000" 1730 depends on SYS_HAS_CPU_R5000 1731 select CPU_SUPPORTS_32BIT_KERNEL 1732 select CPU_SUPPORTS_64BIT_KERNEL 1733 select CPU_SUPPORTS_HUGEPAGES 1734 help 1735 MIPS Technologies R5000-series processors other than the Nevada. 1736 1737config CPU_R5500 1738 bool "R5500" 1739 depends on SYS_HAS_CPU_R5500 1740 select CPU_SUPPORTS_32BIT_KERNEL 1741 select CPU_SUPPORTS_64BIT_KERNEL 1742 select CPU_SUPPORTS_HUGEPAGES 1743 help 1744 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1745 instruction set. 1746 1747config CPU_NEVADA 1748 bool "RM52xx" 1749 depends on SYS_HAS_CPU_NEVADA 1750 select CPU_SUPPORTS_32BIT_KERNEL 1751 select CPU_SUPPORTS_64BIT_KERNEL 1752 select CPU_SUPPORTS_HUGEPAGES 1753 help 1754 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1755 1756config CPU_R10000 1757 bool "R10000" 1758 depends on SYS_HAS_CPU_R10000 1759 select CPU_HAS_PREFETCH 1760 select CPU_SUPPORTS_32BIT_KERNEL 1761 select CPU_SUPPORTS_64BIT_KERNEL 1762 select CPU_SUPPORTS_HIGHMEM 1763 select CPU_SUPPORTS_HUGEPAGES 1764 help 1765 MIPS Technologies R10000-series processors. 1766 1767config CPU_RM7000 1768 bool "RM7000" 1769 depends on SYS_HAS_CPU_RM7000 1770 select CPU_HAS_PREFETCH 1771 select CPU_SUPPORTS_32BIT_KERNEL 1772 select CPU_SUPPORTS_64BIT_KERNEL 1773 select CPU_SUPPORTS_HIGHMEM 1774 select CPU_SUPPORTS_HUGEPAGES 1775 1776config CPU_SB1 1777 bool "SB1" 1778 depends on SYS_HAS_CPU_SB1 1779 select CPU_SUPPORTS_32BIT_KERNEL 1780 select CPU_SUPPORTS_64BIT_KERNEL 1781 select CPU_SUPPORTS_HIGHMEM 1782 select CPU_SUPPORTS_HUGEPAGES 1783 select WEAK_ORDERING 1784 1785config CPU_CAVIUM_OCTEON 1786 bool "Cavium Octeon processor" 1787 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1788 select CPU_HAS_PREFETCH 1789 select CPU_SUPPORTS_64BIT_KERNEL 1790 select WEAK_ORDERING 1791 select CPU_SUPPORTS_HIGHMEM 1792 select CPU_SUPPORTS_HUGEPAGES 1793 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1794 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1795 select MIPS_L1_CACHE_SHIFT_7 1796 select HAVE_KVM 1797 help 1798 The Cavium Octeon processor is a highly integrated chip containing 1799 many ethernet hardware widgets for networking tasks. The processor 1800 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1801 Full details can be found at http://www.caviumnetworks.com. 1802 1803config CPU_BMIPS 1804 bool "Broadcom BMIPS" 1805 depends on SYS_HAS_CPU_BMIPS 1806 select CPU_MIPS32 1807 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1808 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1809 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1810 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1811 select CPU_SUPPORTS_32BIT_KERNEL 1812 select DMA_NONCOHERENT 1813 select IRQ_MIPS_CPU 1814 select SWAP_IO_SPACE 1815 select WEAK_ORDERING 1816 select CPU_SUPPORTS_HIGHMEM 1817 select CPU_HAS_PREFETCH 1818 select CPU_SUPPORTS_CPUFREQ 1819 select MIPS_EXTERNAL_TIMER 1820 help 1821 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1822 1823config CPU_XLR 1824 bool "Netlogic XLR SoC" 1825 depends on SYS_HAS_CPU_XLR 1826 select CPU_SUPPORTS_32BIT_KERNEL 1827 select CPU_SUPPORTS_64BIT_KERNEL 1828 select CPU_SUPPORTS_HIGHMEM 1829 select CPU_SUPPORTS_HUGEPAGES 1830 select WEAK_ORDERING 1831 select WEAK_REORDERING_BEYOND_LLSC 1832 help 1833 Netlogic Microsystems XLR/XLS processors. 1834 1835config CPU_XLP 1836 bool "Netlogic XLP SoC" 1837 depends on SYS_HAS_CPU_XLP 1838 select CPU_SUPPORTS_32BIT_KERNEL 1839 select CPU_SUPPORTS_64BIT_KERNEL 1840 select CPU_SUPPORTS_HIGHMEM 1841 select WEAK_ORDERING 1842 select WEAK_REORDERING_BEYOND_LLSC 1843 select CPU_HAS_PREFETCH 1844 select CPU_MIPSR2 1845 select CPU_SUPPORTS_HUGEPAGES 1846 select MIPS_ASID_BITS_VARIABLE 1847 help 1848 Netlogic Microsystems XLP processors. 1849endchoice 1850 1851config CPU_MIPS32_3_5_FEATURES 1852 bool "MIPS32 Release 3.5 Features" 1853 depends on SYS_HAS_CPU_MIPS32_R3_5 1854 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1855 CPU_P5600 1856 help 1857 Choose this option to build a kernel for release 2 or later of the 1858 MIPS32 architecture including features from the 3.5 release such as 1859 support for Enhanced Virtual Addressing (EVA). 1860 1861config CPU_MIPS32_3_5_EVA 1862 bool "Enhanced Virtual Addressing (EVA)" 1863 depends on CPU_MIPS32_3_5_FEATURES 1864 select EVA 1865 default y 1866 help 1867 Choose this option if you want to enable the Enhanced Virtual 1868 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1869 One of its primary benefits is an increase in the maximum size 1870 of lowmem (up to 3GB). If unsure, say 'N' here. 1871 1872config CPU_MIPS32_R5_FEATURES 1873 bool "MIPS32 Release 5 Features" 1874 depends on SYS_HAS_CPU_MIPS32_R5 1875 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1876 help 1877 Choose this option to build a kernel for release 2 or later of the 1878 MIPS32 architecture including features from release 5 such as 1879 support for Extended Physical Addressing (XPA). 1880 1881config CPU_MIPS32_R5_XPA 1882 bool "Extended Physical Addressing (XPA)" 1883 depends on CPU_MIPS32_R5_FEATURES 1884 depends on !EVA 1885 depends on !PAGE_SIZE_4KB 1886 depends on SYS_SUPPORTS_HIGHMEM 1887 select XPA 1888 select HIGHMEM 1889 select PHYS_ADDR_T_64BIT 1890 default n 1891 help 1892 Choose this option if you want to enable the Extended Physical 1893 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1894 benefit is to increase physical addressing equal to or greater 1895 than 40 bits. Note that this has the side effect of turning on 1896 64-bit addressing which in turn makes the PTEs 64-bit in size. 1897 If unsure, say 'N' here. 1898 1899if CPU_LOONGSON2F 1900config CPU_NOP_WORKAROUNDS 1901 bool 1902 1903config CPU_JUMP_WORKAROUNDS 1904 bool 1905 1906config CPU_LOONGSON2F_WORKAROUNDS 1907 bool "Loongson 2F Workarounds" 1908 default y 1909 select CPU_NOP_WORKAROUNDS 1910 select CPU_JUMP_WORKAROUNDS 1911 help 1912 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1913 require workarounds. Without workarounds the system may hang 1914 unexpectedly. For more information please refer to the gas 1915 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1916 1917 Loongson 2F03 and later have fixed these issues and no workarounds 1918 are needed. The workarounds have no significant side effect on them 1919 but may decrease the performance of the system so this option should 1920 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1921 systems. 1922 1923 If unsure, please say Y. 1924endif # CPU_LOONGSON2F 1925 1926config SYS_SUPPORTS_ZBOOT 1927 bool 1928 select HAVE_KERNEL_GZIP 1929 select HAVE_KERNEL_BZIP2 1930 select HAVE_KERNEL_LZ4 1931 select HAVE_KERNEL_LZMA 1932 select HAVE_KERNEL_LZO 1933 select HAVE_KERNEL_XZ 1934 select HAVE_KERNEL_ZSTD 1935 1936config SYS_SUPPORTS_ZBOOT_UART16550 1937 bool 1938 select SYS_SUPPORTS_ZBOOT 1939 1940config SYS_SUPPORTS_ZBOOT_UART_PROM 1941 bool 1942 select SYS_SUPPORTS_ZBOOT 1943 1944config CPU_LOONGSON2EF 1945 bool 1946 select CPU_SUPPORTS_32BIT_KERNEL 1947 select CPU_SUPPORTS_64BIT_KERNEL 1948 select CPU_SUPPORTS_HIGHMEM 1949 select CPU_SUPPORTS_HUGEPAGES 1950 select ARCH_HAS_PHYS_TO_DMA 1951 1952config CPU_LOONGSON32 1953 bool 1954 select CPU_MIPS32 1955 select CPU_MIPSR2 1956 select CPU_HAS_PREFETCH 1957 select CPU_SUPPORTS_32BIT_KERNEL 1958 select CPU_SUPPORTS_HIGHMEM 1959 select CPU_SUPPORTS_CPUFREQ 1960 1961config CPU_BMIPS32_3300 1962 select SMP_UP if SMP 1963 bool 1964 1965config CPU_BMIPS4350 1966 bool 1967 select SYS_SUPPORTS_SMP 1968 select SYS_SUPPORTS_HOTPLUG_CPU 1969 1970config CPU_BMIPS4380 1971 bool 1972 select MIPS_L1_CACHE_SHIFT_6 1973 select SYS_SUPPORTS_SMP 1974 select SYS_SUPPORTS_HOTPLUG_CPU 1975 select CPU_HAS_RIXI 1976 1977config CPU_BMIPS5000 1978 bool 1979 select MIPS_CPU_SCACHE 1980 select MIPS_L1_CACHE_SHIFT_7 1981 select SYS_SUPPORTS_SMP 1982 select SYS_SUPPORTS_HOTPLUG_CPU 1983 select CPU_HAS_RIXI 1984 1985config SYS_HAS_CPU_LOONGSON64 1986 bool 1987 select CPU_SUPPORTS_CPUFREQ 1988 select CPU_HAS_RIXI 1989 1990config SYS_HAS_CPU_LOONGSON2E 1991 bool 1992 1993config SYS_HAS_CPU_LOONGSON2F 1994 bool 1995 select CPU_SUPPORTS_CPUFREQ 1996 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1997 1998config SYS_HAS_CPU_LOONGSON1B 1999 bool 2000 2001config SYS_HAS_CPU_LOONGSON1C 2002 bool 2003 2004config SYS_HAS_CPU_MIPS32_R1 2005 bool 2006 2007config SYS_HAS_CPU_MIPS32_R2 2008 bool 2009 2010config SYS_HAS_CPU_MIPS32_R3_5 2011 bool 2012 2013config SYS_HAS_CPU_MIPS32_R5 2014 bool 2015 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2016 2017config SYS_HAS_CPU_MIPS32_R6 2018 bool 2019 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2020 2021config SYS_HAS_CPU_MIPS64_R1 2022 bool 2023 2024config SYS_HAS_CPU_MIPS64_R2 2025 bool 2026 2027config SYS_HAS_CPU_MIPS64_R6 2028 bool 2029 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2030 2031config SYS_HAS_CPU_P5600 2032 bool 2033 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2034 2035config SYS_HAS_CPU_R3000 2036 bool 2037 2038config SYS_HAS_CPU_TX39XX 2039 bool 2040 2041config SYS_HAS_CPU_VR41XX 2042 bool 2043 2044config SYS_HAS_CPU_R4300 2045 bool 2046 2047config SYS_HAS_CPU_R4X00 2048 bool 2049 2050config SYS_HAS_CPU_TX49XX 2051 bool 2052 2053config SYS_HAS_CPU_R5000 2054 bool 2055 2056config SYS_HAS_CPU_R5500 2057 bool 2058 2059config SYS_HAS_CPU_NEVADA 2060 bool 2061 2062config SYS_HAS_CPU_R10000 2063 bool 2064 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2065 2066config SYS_HAS_CPU_RM7000 2067 bool 2068 2069config SYS_HAS_CPU_SB1 2070 bool 2071 2072config SYS_HAS_CPU_CAVIUM_OCTEON 2073 bool 2074 2075config SYS_HAS_CPU_BMIPS 2076 bool 2077 2078config SYS_HAS_CPU_BMIPS32_3300 2079 bool 2080 select SYS_HAS_CPU_BMIPS 2081 2082config SYS_HAS_CPU_BMIPS4350 2083 bool 2084 select SYS_HAS_CPU_BMIPS 2085 2086config SYS_HAS_CPU_BMIPS4380 2087 bool 2088 select SYS_HAS_CPU_BMIPS 2089 2090config SYS_HAS_CPU_BMIPS5000 2091 bool 2092 select SYS_HAS_CPU_BMIPS 2093 select ARCH_HAS_SYNC_DMA_FOR_CPU 2094 2095config SYS_HAS_CPU_XLR 2096 bool 2097 2098config SYS_HAS_CPU_XLP 2099 bool 2100 2101# 2102# CPU may reorder R->R, R->W, W->R, W->W 2103# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 2104# 2105config WEAK_ORDERING 2106 bool 2107 2108# 2109# CPU may reorder reads and writes beyond LL/SC 2110# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 2111# 2112config WEAK_REORDERING_BEYOND_LLSC 2113 bool 2114endmenu 2115 2116# 2117# These two indicate any level of the MIPS32 and MIPS64 architecture 2118# 2119config CPU_MIPS32 2120 bool 2121 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 2122 CPU_MIPS32_R6 || CPU_P5600 2123 2124config CPU_MIPS64 2125 bool 2126 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2127 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON 2128 2129# 2130# These indicate the revision of the architecture 2131# 2132config CPU_MIPSR1 2133 bool 2134 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2135 2136config CPU_MIPSR2 2137 bool 2138 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2139 select CPU_HAS_RIXI 2140 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2141 select MIPS_SPRAM 2142 2143config CPU_MIPSR5 2144 bool 2145 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2146 select CPU_HAS_RIXI 2147 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2148 select MIPS_SPRAM 2149 2150config CPU_MIPSR6 2151 bool 2152 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2153 select CPU_HAS_RIXI 2154 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2155 select HAVE_ARCH_BITREVERSE 2156 select MIPS_ASID_BITS_VARIABLE 2157 select MIPS_CRC_SUPPORT 2158 select MIPS_SPRAM 2159 2160config TARGET_ISA_REV 2161 int 2162 default 1 if CPU_MIPSR1 2163 default 2 if CPU_MIPSR2 2164 default 5 if CPU_MIPSR5 2165 default 6 if CPU_MIPSR6 2166 default 0 2167 help 2168 Reflects the ISA revision being targeted by the kernel build. This 2169 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2170 2171config EVA 2172 bool 2173 2174config XPA 2175 bool 2176 2177config SYS_SUPPORTS_32BIT_KERNEL 2178 bool 2179config SYS_SUPPORTS_64BIT_KERNEL 2180 bool 2181config CPU_SUPPORTS_32BIT_KERNEL 2182 bool 2183config CPU_SUPPORTS_64BIT_KERNEL 2184 bool 2185config CPU_SUPPORTS_CPUFREQ 2186 bool 2187config CPU_SUPPORTS_ADDRWINCFG 2188 bool 2189config CPU_SUPPORTS_HUGEPAGES 2190 bool 2191 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) 2192config MIPS_PGD_C0_CONTEXT 2193 bool 2194 depends on 64BIT 2195 default y if (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP 2196 2197# 2198# Set to y for ptrace access to watch registers. 2199# 2200config HARDWARE_WATCHPOINTS 2201 bool 2202 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2203 2204menu "Kernel type" 2205 2206choice 2207 prompt "Kernel code model" 2208 help 2209 You should only select this option if you have a workload that 2210 actually benefits from 64-bit processing or if your machine has 2211 large memory. You will only be presented a single option in this 2212 menu if your system does not support both 32-bit and 64-bit kernels. 2213 2214config 32BIT 2215 bool "32-bit kernel" 2216 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2217 select TRAD_SIGNALS 2218 help 2219 Select this option if you want to build a 32-bit kernel. 2220 2221config 64BIT 2222 bool "64-bit kernel" 2223 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2224 help 2225 Select this option if you want to build a 64-bit kernel. 2226 2227endchoice 2228 2229config MIPS_VA_BITS_48 2230 bool "48 bits virtual memory" 2231 depends on 64BIT 2232 help 2233 Support a maximum at least 48 bits of application virtual 2234 memory. Default is 40 bits or less, depending on the CPU. 2235 For page sizes 16k and above, this option results in a small 2236 memory overhead for page tables. For 4k page size, a fourth 2237 level of page tables is added which imposes both a memory 2238 overhead as well as slower TLB fault handling. 2239 2240 If unsure, say N. 2241 2242choice 2243 prompt "Kernel page size" 2244 default PAGE_SIZE_4KB 2245 2246config PAGE_SIZE_4KB 2247 bool "4kB" 2248 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2249 help 2250 This option select the standard 4kB Linux page size. On some 2251 R3000-family processors this is the only available page size. Using 2252 4kB page size will minimize memory consumption and is therefore 2253 recommended for low memory systems. 2254 2255config PAGE_SIZE_8KB 2256 bool "8kB" 2257 depends on CPU_CAVIUM_OCTEON 2258 depends on !MIPS_VA_BITS_48 2259 help 2260 Using 8kB page size will result in higher performance kernel at 2261 the price of higher memory consumption. This option is available 2262 only on cnMIPS processors. Note that you will need a suitable Linux 2263 distribution to support this. 2264 2265config PAGE_SIZE_16KB 2266 bool "16kB" 2267 depends on !CPU_R3000 && !CPU_TX39XX 2268 help 2269 Using 16kB page size will result in higher performance kernel at 2270 the price of higher memory consumption. This option is available on 2271 all non-R3000 family processors. Note that you will need a suitable 2272 Linux distribution to support this. 2273 2274config PAGE_SIZE_32KB 2275 bool "32kB" 2276 depends on CPU_CAVIUM_OCTEON 2277 depends on !MIPS_VA_BITS_48 2278 help 2279 Using 32kB page size will result in higher performance kernel at 2280 the price of higher memory consumption. This option is available 2281 only on cnMIPS cores. Note that you will need a suitable Linux 2282 distribution to support this. 2283 2284config PAGE_SIZE_64KB 2285 bool "64kB" 2286 depends on !CPU_R3000 && !CPU_TX39XX 2287 help 2288 Using 64kB page size will result in higher performance kernel at 2289 the price of higher memory consumption. This option is available on 2290 all non-R3000 family processor. Not that at the time of this 2291 writing this option is still high experimental. 2292 2293endchoice 2294 2295config FORCE_MAX_ZONEORDER 2296 int "Maximum zone order" 2297 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2298 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2299 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2300 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2301 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2302 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2303 range 0 64 2304 default "11" 2305 help 2306 The kernel memory allocator divides physically contiguous memory 2307 blocks into "zones", where each zone is a power of two number of 2308 pages. This option selects the largest power of two that the kernel 2309 keeps in the memory allocator. If you need to allocate very large 2310 blocks of physically contiguous memory, then you may need to 2311 increase this value. 2312 2313 This config option is actually maximum order plus one. For example, 2314 a value of 11 means that the largest free memory block is 2^10 pages. 2315 2316 The page size is not necessarily 4KB. Keep this in mind 2317 when choosing a value for this option. 2318 2319config BOARD_SCACHE 2320 bool 2321 2322config IP22_CPU_SCACHE 2323 bool 2324 select BOARD_SCACHE 2325 2326# 2327# Support for a MIPS32 / MIPS64 style S-caches 2328# 2329config MIPS_CPU_SCACHE 2330 bool 2331 select BOARD_SCACHE 2332 2333config R5000_CPU_SCACHE 2334 bool 2335 select BOARD_SCACHE 2336 2337config RM7000_CPU_SCACHE 2338 bool 2339 select BOARD_SCACHE 2340 2341config SIBYTE_DMA_PAGEOPS 2342 bool "Use DMA to clear/copy pages" 2343 depends on CPU_SB1 2344 help 2345 Instead of using the CPU to zero and copy pages, use a Data Mover 2346 channel. These DMA channels are otherwise unused by the standard 2347 SiByte Linux port. Seems to give a small performance benefit. 2348 2349config CPU_HAS_PREFETCH 2350 bool 2351 2352config CPU_GENERIC_DUMP_TLB 2353 bool 2354 default y if !(CPU_R3000 || CPU_TX39XX) 2355 2356config MIPS_FP_SUPPORT 2357 bool "Floating Point support" if EXPERT 2358 default y 2359 help 2360 Select y to include support for floating point in the kernel 2361 including initialization of FPU hardware, FP context save & restore 2362 and emulation of an FPU where necessary. Without this support any 2363 userland program attempting to use floating point instructions will 2364 receive a SIGILL. 2365 2366 If you know that your userland will not attempt to use floating point 2367 instructions then you can say n here to shrink the kernel a little. 2368 2369 If unsure, say y. 2370 2371config CPU_R2300_FPU 2372 bool 2373 depends on MIPS_FP_SUPPORT 2374 default y if CPU_R3000 || CPU_TX39XX 2375 2376config CPU_R3K_TLB 2377 bool 2378 2379config CPU_R4K_FPU 2380 bool 2381 depends on MIPS_FP_SUPPORT 2382 default y if !CPU_R2300_FPU 2383 2384config CPU_R4K_CACHE_TLB 2385 bool 2386 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2387 2388config MIPS_MT_SMP 2389 bool "MIPS MT SMP support (1 TC on each available VPE)" 2390 default y 2391 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2392 select CPU_MIPSR2_IRQ_VI 2393 select CPU_MIPSR2_IRQ_EI 2394 select SYNC_R4K 2395 select MIPS_MT 2396 select SMP 2397 select SMP_UP 2398 select SYS_SUPPORTS_SMP 2399 select SYS_SUPPORTS_SCHED_SMT 2400 select MIPS_PERF_SHARED_TC_COUNTERS 2401 help 2402 This is a kernel model which is known as SMVP. This is supported 2403 on cores with the MT ASE and uses the available VPEs to implement 2404 virtual processors which supports SMP. This is equivalent to the 2405 Intel Hyperthreading feature. For further information go to 2406 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2407 2408config MIPS_MT 2409 bool 2410 2411config SCHED_SMT 2412 bool "SMT (multithreading) scheduler support" 2413 depends on SYS_SUPPORTS_SCHED_SMT 2414 default n 2415 help 2416 SMT scheduler support improves the CPU scheduler's decision making 2417 when dealing with MIPS MT enabled cores at a cost of slightly 2418 increased overhead in some places. If unsure say N here. 2419 2420config SYS_SUPPORTS_SCHED_SMT 2421 bool 2422 2423config SYS_SUPPORTS_MULTITHREADING 2424 bool 2425 2426config MIPS_MT_FPAFF 2427 bool "Dynamic FPU affinity for FP-intensive threads" 2428 default y 2429 depends on MIPS_MT_SMP 2430 2431config MIPSR2_TO_R6_EMULATOR 2432 bool "MIPS R2-to-R6 emulator" 2433 depends on CPU_MIPSR6 2434 depends on MIPS_FP_SUPPORT 2435 default y 2436 help 2437 Choose this option if you want to run non-R6 MIPS userland code. 2438 Even if you say 'Y' here, the emulator will still be disabled by 2439 default. You can enable it using the 'mipsr2emu' kernel option. 2440 The only reason this is a build-time option is to save ~14K from the 2441 final kernel image. 2442 2443config SYS_SUPPORTS_VPE_LOADER 2444 bool 2445 depends on SYS_SUPPORTS_MULTITHREADING 2446 help 2447 Indicates that the platform supports the VPE loader, and provides 2448 physical_memsize. 2449 2450config MIPS_VPE_LOADER 2451 bool "VPE loader support." 2452 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2453 select CPU_MIPSR2_IRQ_VI 2454 select CPU_MIPSR2_IRQ_EI 2455 select MIPS_MT 2456 help 2457 Includes a loader for loading an elf relocatable object 2458 onto another VPE and running it. 2459 2460config MIPS_VPE_LOADER_CMP 2461 bool 2462 default "y" 2463 depends on MIPS_VPE_LOADER && MIPS_CMP 2464 2465config MIPS_VPE_LOADER_MT 2466 bool 2467 default "y" 2468 depends on MIPS_VPE_LOADER && !MIPS_CMP 2469 2470config MIPS_VPE_LOADER_TOM 2471 bool "Load VPE program into memory hidden from linux" 2472 depends on MIPS_VPE_LOADER 2473 default y 2474 help 2475 The loader can use memory that is present but has been hidden from 2476 Linux using the kernel command line option "mem=xxMB". It's up to 2477 you to ensure the amount you put in the option and the space your 2478 program requires is less or equal to the amount physically present. 2479 2480config MIPS_VPE_APSP_API 2481 bool "Enable support for AP/SP API (RTLX)" 2482 depends on MIPS_VPE_LOADER 2483 2484config MIPS_VPE_APSP_API_CMP 2485 bool 2486 default "y" 2487 depends on MIPS_VPE_APSP_API && MIPS_CMP 2488 2489config MIPS_VPE_APSP_API_MT 2490 bool 2491 default "y" 2492 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2493 2494config MIPS_CMP 2495 bool "MIPS CMP framework support (DEPRECATED)" 2496 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2497 select SMP 2498 select SYNC_R4K 2499 select SYS_SUPPORTS_SMP 2500 select WEAK_ORDERING 2501 default n 2502 help 2503 Select this if you are using a bootloader which implements the "CMP 2504 framework" protocol (ie. YAMON) and want your kernel to make use of 2505 its ability to start secondary CPUs. 2506 2507 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2508 instead of this. 2509 2510config MIPS_CPS 2511 bool "MIPS Coherent Processing System support" 2512 depends on SYS_SUPPORTS_MIPS_CPS 2513 select MIPS_CM 2514 select MIPS_CPS_PM if HOTPLUG_CPU 2515 select SMP 2516 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2517 select SYS_SUPPORTS_HOTPLUG_CPU 2518 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2519 select SYS_SUPPORTS_SMP 2520 select WEAK_ORDERING 2521 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 2522 help 2523 Select this if you wish to run an SMP kernel across multiple cores 2524 within a MIPS Coherent Processing System. When this option is 2525 enabled the kernel will probe for other cores and boot them with 2526 no external assistance. It is safe to enable this when hardware 2527 support is unavailable. 2528 2529config MIPS_CPS_PM 2530 depends on MIPS_CPS 2531 bool 2532 2533config MIPS_CM 2534 bool 2535 select MIPS_CPC 2536 2537config MIPS_CPC 2538 bool 2539 2540config SB1_PASS_2_WORKAROUNDS 2541 bool 2542 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2543 default y 2544 2545config SB1_PASS_2_1_WORKAROUNDS 2546 bool 2547 depends on CPU_SB1 && CPU_SB1_PASS_2 2548 default y 2549 2550choice 2551 prompt "SmartMIPS or microMIPS ASE support" 2552 2553config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2554 bool "None" 2555 help 2556 Select this if you want neither microMIPS nor SmartMIPS support 2557 2558config CPU_HAS_SMARTMIPS 2559 depends on SYS_SUPPORTS_SMARTMIPS 2560 bool "SmartMIPS" 2561 help 2562 SmartMIPS is a extension of the MIPS32 architecture aimed at 2563 increased security at both hardware and software level for 2564 smartcards. Enabling this option will allow proper use of the 2565 SmartMIPS instructions by Linux applications. However a kernel with 2566 this option will not work on a MIPS core without SmartMIPS core. If 2567 you don't know you probably don't have SmartMIPS and should say N 2568 here. 2569 2570config CPU_MICROMIPS 2571 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2572 bool "microMIPS" 2573 help 2574 When this option is enabled the kernel will be built using the 2575 microMIPS ISA 2576 2577endchoice 2578 2579config CPU_HAS_MSA 2580 bool "Support for the MIPS SIMD Architecture" 2581 depends on CPU_SUPPORTS_MSA 2582 depends on MIPS_FP_SUPPORT 2583 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2584 help 2585 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2586 and a set of SIMD instructions to operate on them. When this option 2587 is enabled the kernel will support allocating & switching MSA 2588 vector register contexts. If you know that your kernel will only be 2589 running on CPUs which do not support MSA or that your userland will 2590 not be making use of it then you may wish to say N here to reduce 2591 the size & complexity of your kernel. 2592 2593 If unsure, say Y. 2594 2595config CPU_HAS_WB 2596 bool 2597 2598config XKS01 2599 bool 2600 2601config CPU_HAS_DIEI 2602 depends on !CPU_DIEI_BROKEN 2603 bool 2604 2605config CPU_DIEI_BROKEN 2606 bool 2607 2608config CPU_HAS_RIXI 2609 bool 2610 2611config CPU_NO_LOAD_STORE_LR 2612 bool 2613 help 2614 CPU lacks support for unaligned load and store instructions: 2615 LWL, LWR, SWL, SWR (Load/store word left/right). 2616 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2617 systems). 2618 2619# 2620# Vectored interrupt mode is an R2 feature 2621# 2622config CPU_MIPSR2_IRQ_VI 2623 bool 2624 2625# 2626# Extended interrupt mode is an R2 feature 2627# 2628config CPU_MIPSR2_IRQ_EI 2629 bool 2630 2631config CPU_HAS_SYNC 2632 bool 2633 depends on !CPU_R3000 2634 default y 2635 2636# 2637# CPU non-features 2638# 2639config CPU_DADDI_WORKAROUNDS 2640 bool 2641 2642config CPU_R4000_WORKAROUNDS 2643 bool 2644 select CPU_R4400_WORKAROUNDS 2645 2646config CPU_R4400_WORKAROUNDS 2647 bool 2648 2649config CPU_R4X00_BUGS64 2650 bool 2651 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2652 2653config MIPS_ASID_SHIFT 2654 int 2655 default 6 if CPU_R3000 || CPU_TX39XX 2656 default 0 2657 2658config MIPS_ASID_BITS 2659 int 2660 default 0 if MIPS_ASID_BITS_VARIABLE 2661 default 6 if CPU_R3000 || CPU_TX39XX 2662 default 8 2663 2664config MIPS_ASID_BITS_VARIABLE 2665 bool 2666 2667config MIPS_CRC_SUPPORT 2668 bool 2669 2670# R4600 erratum. Due to the lack of errata information the exact 2671# technical details aren't known. I've experimentally found that disabling 2672# interrupts during indexed I-cache flushes seems to be sufficient to deal 2673# with the issue. 2674config WAR_R4600_V1_INDEX_ICACHEOP 2675 bool 2676 2677# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2678# 2679# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2680# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2681# executed if there is no other dcache activity. If the dcache is 2682# accessed for another instruction immediately preceding when these 2683# cache instructions are executing, it is possible that the dcache 2684# tag match outputs used by these cache instructions will be 2685# incorrect. These cache instructions should be preceded by at least 2686# four instructions that are not any kind of load or store 2687# instruction. 2688# 2689# This is not allowed: lw 2690# nop 2691# nop 2692# nop 2693# cache Hit_Writeback_Invalidate_D 2694# 2695# This is allowed: lw 2696# nop 2697# nop 2698# nop 2699# nop 2700# cache Hit_Writeback_Invalidate_D 2701config WAR_R4600_V1_HIT_CACHEOP 2702 bool 2703 2704# Writeback and invalidate the primary cache dcache before DMA. 2705# 2706# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2707# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2708# operate correctly if the internal data cache refill buffer is empty. These 2709# CACHE instructions should be separated from any potential data cache miss 2710# by a load instruction to an uncached address to empty the response buffer." 2711# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2712# in .pdf format.) 2713config WAR_R4600_V2_HIT_CACHEOP 2714 bool 2715 2716# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2717# the line which this instruction itself exists, the following 2718# operation is not guaranteed." 2719# 2720# Workaround: do two phase flushing for Index_Invalidate_I 2721config WAR_TX49XX_ICACHE_INDEX_INV 2722 bool 2723 2724# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2725# opposes it being called that) where invalid instructions in the same 2726# I-cache line worth of instructions being fetched may case spurious 2727# exceptions. 2728config WAR_ICACHE_REFILLS 2729 bool 2730 2731# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2732# may cause ll / sc and lld / scd sequences to execute non-atomically. 2733config WAR_R10000_LLSC 2734 bool 2735 2736# 34K core erratum: "Problems Executing the TLBR Instruction" 2737config WAR_MIPS34K_MISSED_ITLB 2738 bool 2739 2740# 2741# - Highmem only makes sense for the 32-bit kernel. 2742# - The current highmem code will only work properly on physically indexed 2743# caches such as R3000, SB1, R7000 or those that look like they're virtually 2744# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2745# moment we protect the user and offer the highmem option only on machines 2746# where it's known to be safe. This will not offer highmem on a few systems 2747# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2748# indexed CPUs but we're playing safe. 2749# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2750# know they might have memory configurations that could make use of highmem 2751# support. 2752# 2753config HIGHMEM 2754 bool "High Memory Support" 2755 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2756 select KMAP_LOCAL 2757 2758config CPU_SUPPORTS_HIGHMEM 2759 bool 2760 2761config SYS_SUPPORTS_HIGHMEM 2762 bool 2763 2764config SYS_SUPPORTS_SMARTMIPS 2765 bool 2766 2767config SYS_SUPPORTS_MICROMIPS 2768 bool 2769 2770config SYS_SUPPORTS_MIPS16 2771 bool 2772 help 2773 This option must be set if a kernel might be executed on a MIPS16- 2774 enabled CPU even if MIPS16 is not actually being used. In other 2775 words, it makes the kernel MIPS16-tolerant. 2776 2777config CPU_SUPPORTS_MSA 2778 bool 2779 2780config ARCH_FLATMEM_ENABLE 2781 def_bool y 2782 depends on !NUMA && !CPU_LOONGSON2EF 2783 2784config ARCH_SPARSEMEM_ENABLE 2785 bool 2786 select SPARSEMEM_STATIC if !SGI_IP27 2787 2788config NUMA 2789 bool "NUMA Support" 2790 depends on SYS_SUPPORTS_NUMA 2791 select SMP 2792 help 2793 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2794 Access). This option improves performance on systems with more 2795 than two nodes; on two node systems it is generally better to 2796 leave it disabled; on single node systems leave this option 2797 disabled. 2798 2799config SYS_SUPPORTS_NUMA 2800 bool 2801 2802config HAVE_SETUP_PER_CPU_AREA 2803 def_bool y 2804 depends on NUMA 2805 2806config NEED_PER_CPU_EMBED_FIRST_CHUNK 2807 def_bool y 2808 depends on NUMA 2809 2810config RELOCATABLE 2811 bool "Relocatable kernel" 2812 depends on SYS_SUPPORTS_RELOCATABLE 2813 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2814 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2815 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2816 CPU_P5600 || CAVIUM_OCTEON_SOC || \ 2817 CPU_LOONGSON64 2818 help 2819 This builds a kernel image that retains relocation information 2820 so it can be loaded someplace besides the default 1MB. 2821 The relocations make the kernel binary about 15% larger, 2822 but are discarded at runtime 2823 2824config RELOCATION_TABLE_SIZE 2825 hex "Relocation table size" 2826 depends on RELOCATABLE 2827 range 0x0 0x01000000 2828 default "0x00200000" if CPU_LOONGSON64 2829 default "0x00100000" 2830 help 2831 A table of relocation data will be appended to the kernel binary 2832 and parsed at boot to fix up the relocated kernel. 2833 2834 This option allows the amount of space reserved for the table to be 2835 adjusted, although the default of 1Mb should be ok in most cases. 2836 2837 The build will fail and a valid size suggested if this is too small. 2838 2839 If unsure, leave at the default value. 2840 2841config RANDOMIZE_BASE 2842 bool "Randomize the address of the kernel image" 2843 depends on RELOCATABLE 2844 help 2845 Randomizes the physical and virtual address at which the 2846 kernel image is loaded, as a security feature that 2847 deters exploit attempts relying on knowledge of the location 2848 of kernel internals. 2849 2850 Entropy is generated using any coprocessor 0 registers available. 2851 2852 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2853 2854 If unsure, say N. 2855 2856config RANDOMIZE_BASE_MAX_OFFSET 2857 hex "Maximum kASLR offset" if EXPERT 2858 depends on RANDOMIZE_BASE 2859 range 0x0 0x40000000 if EVA || 64BIT 2860 range 0x0 0x08000000 2861 default "0x01000000" 2862 help 2863 When kASLR is active, this provides the maximum offset that will 2864 be applied to the kernel image. It should be set according to the 2865 amount of physical RAM available in the target system minus 2866 PHYSICAL_START and must be a power of 2. 2867 2868 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2869 EVA or 64-bit. The default is 16Mb. 2870 2871config NODES_SHIFT 2872 int 2873 default "6" 2874 depends on NEED_MULTIPLE_NODES 2875 2876config HW_PERF_EVENTS 2877 bool "Enable hardware performance counter support for perf events" 2878 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64) 2879 default y 2880 help 2881 Enable hardware performance counter support for perf events. If 2882 disabled, perf events will use software events only. 2883 2884config DMI 2885 bool "Enable DMI scanning" 2886 depends on MACH_LOONGSON64 2887 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2888 default y 2889 help 2890 Enabled scanning of DMI to identify machine quirks. Say Y 2891 here unless you have verified that your setup is not 2892 affected by entries in the DMI blacklist. Required by PNP 2893 BIOS code. 2894 2895config SMP 2896 bool "Multi-Processing support" 2897 depends on SYS_SUPPORTS_SMP 2898 help 2899 This enables support for systems with more than one CPU. If you have 2900 a system with only one CPU, say N. If you have a system with more 2901 than one CPU, say Y. 2902 2903 If you say N here, the kernel will run on uni- and multiprocessor 2904 machines, but will use only one CPU of a multiprocessor machine. If 2905 you say Y here, the kernel will run on many, but not all, 2906 uniprocessor machines. On a uniprocessor machine, the kernel 2907 will run faster if you say N here. 2908 2909 People using multiprocessor machines who say Y here should also say 2910 Y to "Enhanced Real Time Clock Support", below. 2911 2912 See also the SMP-HOWTO available at 2913 <https://www.tldp.org/docs.html#howto>. 2914 2915 If you don't know what to do here, say N. 2916 2917config HOTPLUG_CPU 2918 bool "Support for hot-pluggable CPUs" 2919 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2920 help 2921 Say Y here to allow turning CPUs off and on. CPUs can be 2922 controlled through /sys/devices/system/cpu. 2923 (Note: power management support will enable this option 2924 automatically on SMP systems. ) 2925 Say N if you want to disable CPU hotplug. 2926 2927config SMP_UP 2928 bool 2929 2930config SYS_SUPPORTS_MIPS_CMP 2931 bool 2932 2933config SYS_SUPPORTS_MIPS_CPS 2934 bool 2935 2936config SYS_SUPPORTS_SMP 2937 bool 2938 2939config NR_CPUS_DEFAULT_4 2940 bool 2941 2942config NR_CPUS_DEFAULT_8 2943 bool 2944 2945config NR_CPUS_DEFAULT_16 2946 bool 2947 2948config NR_CPUS_DEFAULT_32 2949 bool 2950 2951config NR_CPUS_DEFAULT_64 2952 bool 2953 2954config NR_CPUS 2955 int "Maximum number of CPUs (2-256)" 2956 range 2 256 2957 depends on SMP 2958 default "4" if NR_CPUS_DEFAULT_4 2959 default "8" if NR_CPUS_DEFAULT_8 2960 default "16" if NR_CPUS_DEFAULT_16 2961 default "32" if NR_CPUS_DEFAULT_32 2962 default "64" if NR_CPUS_DEFAULT_64 2963 help 2964 This allows you to specify the maximum number of CPUs which this 2965 kernel will support. The maximum supported value is 32 for 32-bit 2966 kernel and 64 for 64-bit kernels; the minimum value which makes 2967 sense is 1 for Qemu (useful only for kernel debugging purposes) 2968 and 2 for all others. 2969 2970 This is purely to save memory - each supported CPU adds 2971 approximately eight kilobytes to the kernel image. For best 2972 performance should round up your number of processors to the next 2973 power of two. 2974 2975config MIPS_PERF_SHARED_TC_COUNTERS 2976 bool 2977 2978config MIPS_NR_CPU_NR_MAP_1024 2979 bool 2980 2981config MIPS_NR_CPU_NR_MAP 2982 int 2983 depends on SMP 2984 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2985 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2986 2987# 2988# Timer Interrupt Frequency Configuration 2989# 2990 2991choice 2992 prompt "Timer frequency" 2993 default HZ_250 2994 help 2995 Allows the configuration of the timer frequency. 2996 2997 config HZ_24 2998 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2999 3000 config HZ_48 3001 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 3002 3003 config HZ_100 3004 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 3005 3006 config HZ_128 3007 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 3008 3009 config HZ_250 3010 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 3011 3012 config HZ_256 3013 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 3014 3015 config HZ_1000 3016 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 3017 3018 config HZ_1024 3019 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 3020 3021endchoice 3022 3023config SYS_SUPPORTS_24HZ 3024 bool 3025 3026config SYS_SUPPORTS_48HZ 3027 bool 3028 3029config SYS_SUPPORTS_100HZ 3030 bool 3031 3032config SYS_SUPPORTS_128HZ 3033 bool 3034 3035config SYS_SUPPORTS_250HZ 3036 bool 3037 3038config SYS_SUPPORTS_256HZ 3039 bool 3040 3041config SYS_SUPPORTS_1000HZ 3042 bool 3043 3044config SYS_SUPPORTS_1024HZ 3045 bool 3046 3047config SYS_SUPPORTS_ARBIT_HZ 3048 bool 3049 default y if !SYS_SUPPORTS_24HZ && \ 3050 !SYS_SUPPORTS_48HZ && \ 3051 !SYS_SUPPORTS_100HZ && \ 3052 !SYS_SUPPORTS_128HZ && \ 3053 !SYS_SUPPORTS_250HZ && \ 3054 !SYS_SUPPORTS_256HZ && \ 3055 !SYS_SUPPORTS_1000HZ && \ 3056 !SYS_SUPPORTS_1024HZ 3057 3058config HZ 3059 int 3060 default 24 if HZ_24 3061 default 48 if HZ_48 3062 default 100 if HZ_100 3063 default 128 if HZ_128 3064 default 250 if HZ_250 3065 default 256 if HZ_256 3066 default 1000 if HZ_1000 3067 default 1024 if HZ_1024 3068 3069config SCHED_HRTICK 3070 def_bool HIGH_RES_TIMERS 3071 3072config KEXEC 3073 bool "Kexec system call" 3074 select KEXEC_CORE 3075 help 3076 kexec is a system call that implements the ability to shutdown your 3077 current kernel, and to start another kernel. It is like a reboot 3078 but it is independent of the system firmware. And like a reboot 3079 you can start any kernel with it, not just Linux. 3080 3081 The name comes from the similarity to the exec system call. 3082 3083 It is an ongoing process to be certain the hardware in a machine 3084 is properly shutdown, so do not be surprised if this code does not 3085 initially work for you. As of this writing the exact hardware 3086 interface is strongly in flux, so no good recommendation can be 3087 made. 3088 3089config CRASH_DUMP 3090 bool "Kernel crash dumps" 3091 help 3092 Generate crash dump after being started by kexec. 3093 This should be normally only set in special crash dump kernels 3094 which are loaded in the main kernel with kexec-tools into 3095 a specially reserved region and then later executed after 3096 a crash by kdump/kexec. The crash dump kernel must be compiled 3097 to a memory address not used by the main kernel or firmware using 3098 PHYSICAL_START. 3099 3100config PHYSICAL_START 3101 hex "Physical address where the kernel is loaded" 3102 default "0xffffffff84000000" 3103 depends on CRASH_DUMP 3104 help 3105 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 3106 If you plan to use kernel for capturing the crash dump change 3107 this value to start of the reserved region (the "X" value as 3108 specified in the "crashkernel=YM@XM" command line boot parameter 3109 passed to the panic-ed kernel). 3110 3111config MIPS_O32_FP64_SUPPORT 3112 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 3113 depends on 32BIT || MIPS32_O32 3114 help 3115 When this is enabled, the kernel will support use of 64-bit floating 3116 point registers with binaries using the O32 ABI along with the 3117 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 3118 32-bit MIPS systems this support is at the cost of increasing the 3119 size and complexity of the compiled FPU emulator. Thus if you are 3120 running a MIPS32 system and know that none of your userland binaries 3121 will require 64-bit floating point, you may wish to reduce the size 3122 of your kernel & potentially improve FP emulation performance by 3123 saying N here. 3124 3125 Although binutils currently supports use of this flag the details 3126 concerning its effect upon the O32 ABI in userland are still being 3127 worked on. In order to avoid userland becoming dependent upon current 3128 behaviour before the details have been finalised, this option should 3129 be considered experimental and only enabled by those working upon 3130 said details. 3131 3132 If unsure, say N. 3133 3134config USE_OF 3135 bool 3136 select OF 3137 select OF_EARLY_FLATTREE 3138 select IRQ_DOMAIN 3139 3140config UHI_BOOT 3141 bool 3142 3143config BUILTIN_DTB 3144 bool 3145 3146choice 3147 prompt "Kernel appended dtb support" if USE_OF 3148 default MIPS_NO_APPENDED_DTB 3149 3150 config MIPS_NO_APPENDED_DTB 3151 bool "None" 3152 help 3153 Do not enable appended dtb support. 3154 3155 config MIPS_ELF_APPENDED_DTB 3156 bool "vmlinux" 3157 help 3158 With this option, the boot code will look for a device tree binary 3159 DTB) included in the vmlinux ELF section .appended_dtb. By default 3160 it is empty and the DTB can be appended using binutils command 3161 objcopy: 3162 3163 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3164 3165 This is meant as a backward compatibility convenience for those 3166 systems with a bootloader that can't be upgraded to accommodate 3167 the documented boot protocol using a device tree. 3168 3169 config MIPS_RAW_APPENDED_DTB 3170 bool "vmlinux.bin or vmlinuz.bin" 3171 help 3172 With this option, the boot code will look for a device tree binary 3173 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3174 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3175 3176 This is meant as a backward compatibility convenience for those 3177 systems with a bootloader that can't be upgraded to accommodate 3178 the documented boot protocol using a device tree. 3179 3180 Beware that there is very little in terms of protection against 3181 this option being confused by leftover garbage in memory that might 3182 look like a DTB header after a reboot if no actual DTB is appended 3183 to vmlinux.bin. Do not leave this option active in a production kernel 3184 if you don't intend to always append a DTB. 3185endchoice 3186 3187choice 3188 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3189 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3190 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3191 !CAVIUM_OCTEON_SOC 3192 default MIPS_CMDLINE_FROM_BOOTLOADER 3193 3194 config MIPS_CMDLINE_FROM_DTB 3195 depends on USE_OF 3196 bool "Dtb kernel arguments if available" 3197 3198 config MIPS_CMDLINE_DTB_EXTEND 3199 depends on USE_OF 3200 bool "Extend dtb kernel arguments with bootloader arguments" 3201 3202 config MIPS_CMDLINE_FROM_BOOTLOADER 3203 bool "Bootloader kernel arguments if available" 3204 3205 config MIPS_CMDLINE_BUILTIN_EXTEND 3206 depends on CMDLINE_BOOL 3207 bool "Extend builtin kernel arguments with bootloader arguments" 3208endchoice 3209 3210endmenu 3211 3212config LOCKDEP_SUPPORT 3213 bool 3214 default y 3215 3216config STACKTRACE_SUPPORT 3217 bool 3218 default y 3219 3220config PGTABLE_LEVELS 3221 int 3222 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3223 default 3 if 64BIT && !PAGE_SIZE_64KB 3224 default 2 3225 3226config MIPS_AUTO_PFN_OFFSET 3227 bool 3228 3229menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3230 3231config PCI_DRIVERS_GENERIC 3232 select PCI_DOMAINS_GENERIC if PCI 3233 bool 3234 3235config PCI_DRIVERS_LEGACY 3236 def_bool !PCI_DRIVERS_GENERIC 3237 select NO_GENERIC_PCI_IOPORT_MAP 3238 select PCI_DOMAINS if PCI 3239 3240# 3241# ISA support is now enabled via select. Too many systems still have the one 3242# or other ISA chip on the board that users don't know about so don't expect 3243# users to choose the right thing ... 3244# 3245config ISA 3246 bool 3247 3248config TC 3249 bool "TURBOchannel support" 3250 depends on MACH_DECSTATION 3251 help 3252 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3253 processors. TURBOchannel programming specifications are available 3254 at: 3255 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3256 and: 3257 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3258 Linux driver support status is documented at: 3259 <http://www.linux-mips.org/wiki/DECstation> 3260 3261config MMU 3262 bool 3263 default y 3264 3265config ARCH_MMAP_RND_BITS_MIN 3266 default 12 if 64BIT 3267 default 8 3268 3269config ARCH_MMAP_RND_BITS_MAX 3270 default 18 if 64BIT 3271 default 15 3272 3273config ARCH_MMAP_RND_COMPAT_BITS_MIN 3274 default 8 3275 3276config ARCH_MMAP_RND_COMPAT_BITS_MAX 3277 default 15 3278 3279config I8253 3280 bool 3281 select CLKSRC_I8253 3282 select CLKEVT_I8253 3283 select MIPS_EXTERNAL_TIMER 3284 3285config ZONE_DMA 3286 bool 3287 3288config ZONE_DMA32 3289 bool 3290 3291endmenu 3292 3293config TRAD_SIGNALS 3294 bool 3295 3296config MIPS32_COMPAT 3297 bool 3298 3299config COMPAT 3300 bool 3301 3302config SYSVIPC_COMPAT 3303 bool 3304 3305config MIPS32_O32 3306 bool "Kernel support for o32 binaries" 3307 depends on 64BIT 3308 select ARCH_WANT_OLD_COMPAT_IPC 3309 select COMPAT 3310 select MIPS32_COMPAT 3311 select SYSVIPC_COMPAT if SYSVIPC 3312 help 3313 Select this option if you want to run o32 binaries. These are pure 3314 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3315 existing binaries are in this format. 3316 3317 If unsure, say Y. 3318 3319config MIPS32_N32 3320 bool "Kernel support for n32 binaries" 3321 depends on 64BIT 3322 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3323 select COMPAT 3324 select MIPS32_COMPAT 3325 select SYSVIPC_COMPAT if SYSVIPC 3326 help 3327 Select this option if you want to run n32 binaries. These are 3328 64-bit binaries using 32-bit quantities for addressing and certain 3329 data that would normally be 64-bit. They are used in special 3330 cases. 3331 3332 If unsure, say N. 3333 3334menu "Power management options" 3335 3336config ARCH_HIBERNATION_POSSIBLE 3337 def_bool y 3338 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3339 3340config ARCH_SUSPEND_POSSIBLE 3341 def_bool y 3342 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3343 3344source "kernel/power/Kconfig" 3345 3346endmenu 3347 3348config MIPS_EXTERNAL_TIMER 3349 bool 3350 3351menu "CPU Power Management" 3352 3353if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3354source "drivers/cpufreq/Kconfig" 3355endif 3356 3357source "drivers/cpuidle/Kconfig" 3358 3359endmenu 3360 3361source "drivers/firmware/Kconfig" 3362 3363source "arch/mips/kvm/Kconfig" 3364 3365source "arch/mips/vdso/Kconfig" 3366