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