1# SPDX-License-Identifier: GPL-2.0 2config MIPS 3 bool 4 default y 5 select ARCH_32BIT_OFF_T if !64BIT 6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT 7 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT 8 select ARCH_HAS_FORTIFY_SOURCE 9 select ARCH_HAS_KCOV 10 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA 11 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI) 12 select ARCH_HAS_STRNCPY_FROM_USER 13 select ARCH_HAS_STRNLEN_USER 14 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 15 select ARCH_HAS_UBSAN_SANITIZE_ALL 16 select ARCH_HAS_GCOV_PROFILE_ALL 17 select ARCH_KEEP_MEMBLOCK 18 select ARCH_SUPPORTS_UPROBES 19 select ARCH_USE_BUILTIN_BSWAP 20 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT 21 select ARCH_USE_MEMTEST 22 select ARCH_USE_QUEUED_RWLOCKS 23 select ARCH_USE_QUEUED_SPINLOCKS 24 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES 25 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU 26 select ARCH_WANT_IPC_PARSE_VERSION 27 select ARCH_WANT_LD_ORPHAN_WARN 28 select BUILDTIME_TABLE_SORT 29 select CLONE_BACKWARDS 30 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) 31 select CPU_PM if CPU_IDLE 32 select GENERIC_ATOMIC64 if !64BIT 33 select GENERIC_CMOS_UPDATE 34 select GENERIC_CPU_AUTOPROBE 35 select GENERIC_FIND_FIRST_BIT 36 select GENERIC_GETTIMEOFDAY 37 select GENERIC_IOMAP 38 select GENERIC_IRQ_PROBE 39 select GENERIC_IRQ_SHOW 40 select GENERIC_ISA_DMA if EISA 41 select GENERIC_LIB_ASHLDI3 42 select GENERIC_LIB_ASHRDI3 43 select GENERIC_LIB_CMPDI2 44 select GENERIC_LIB_LSHRDI3 45 select GENERIC_LIB_UCMPDI2 46 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC 47 select GENERIC_SMP_IDLE_THREAD 48 select GENERIC_TIME_VSYSCALL 49 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 50 select HAVE_ARCH_COMPILER_H 51 select HAVE_ARCH_JUMP_LABEL 52 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT 53 select HAVE_ARCH_MMAP_RND_BITS if MMU 54 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 55 select HAVE_ARCH_SECCOMP_FILTER 56 select HAVE_ARCH_TRACEHOOK 57 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 58 select HAVE_ASM_MODVERSIONS 59 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS 60 select HAVE_CONTEXT_TRACKING 61 select HAVE_TIF_NOHZ 62 select HAVE_C_RECORDMCOUNT 63 select HAVE_DEBUG_KMEMLEAK 64 select HAVE_DEBUG_STACKOVERFLOW 65 select HAVE_DMA_CONTIGUOUS 66 select HAVE_DYNAMIC_FTRACE 67 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2 68 select HAVE_EXIT_THREAD 69 select HAVE_FAST_GUP 70 select HAVE_FTRACE_MCOUNT_RECORD 71 select HAVE_FUNCTION_GRAPH_TRACER 72 select HAVE_FUNCTION_TRACER 73 select HAVE_GCC_PLUGINS 74 select HAVE_GENERIC_VDSO 75 select HAVE_IOREMAP_PROT 76 select HAVE_IRQ_EXIT_ON_IRQ_STACK 77 select HAVE_IRQ_TIME_ACCOUNTING 78 select HAVE_KPROBES 79 select HAVE_KRETPROBES 80 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION 81 select HAVE_MOD_ARCH_SPECIFIC 82 select HAVE_NMI 83 select HAVE_PERF_EVENTS 84 select HAVE_PERF_REGS 85 select HAVE_PERF_USER_STACK_DUMP 86 select HAVE_REGS_AND_STACK_ACCESS_API 87 select HAVE_RSEQ 88 select HAVE_SPARSE_SYSCALL_NR 89 select HAVE_STACKPROTECTOR 90 select HAVE_SYSCALL_TRACEPOINTS 91 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP 92 select IRQ_FORCED_THREADING 93 select ISA if EISA 94 select MODULES_USE_ELF_REL if MODULES 95 select MODULES_USE_ELF_RELA if MODULES && 64BIT 96 select PERF_USE_VMALLOC 97 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 98 select RTC_LIB 99 select SYSCTL_EXCEPTION_TRACE 100 select TRACE_IRQFLAGS_SUPPORT 101 select VIRT_TO_BUS 102 select ARCH_HAS_ELFCORE_COMPAT 103 104config MIPS_FIXUP_BIGPHYS_ADDR 105 bool 106 107config MIPS_GENERIC 108 bool 109 110config MACH_INGENIC 111 bool 112 select SYS_SUPPORTS_32BIT_KERNEL 113 select SYS_SUPPORTS_LITTLE_ENDIAN 114 select SYS_SUPPORTS_ZBOOT 115 select DMA_NONCOHERENT 116 select ARCH_HAS_SYNC_DMA_FOR_CPU 117 select IRQ_MIPS_CPU 118 select PINCTRL 119 select GPIOLIB 120 select COMMON_CLK 121 select GENERIC_IRQ_CHIP 122 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 123 select USE_OF 124 select CPU_SUPPORTS_CPUFREQ 125 select MIPS_EXTERNAL_TIMER 126 127menu "Machine selection" 128 129choice 130 prompt "System type" 131 default MIPS_GENERIC_KERNEL 132 133config MIPS_GENERIC_KERNEL 134 bool "Generic board-agnostic MIPS kernel" 135 select ARCH_HAS_SETUP_DMA_OPS 136 select MIPS_GENERIC 137 select BOOT_RAW 138 select BUILTIN_DTB 139 select CEVT_R4K 140 select CLKSRC_MIPS_GIC 141 select COMMON_CLK 142 select CPU_MIPSR2_IRQ_EI 143 select CPU_MIPSR2_IRQ_VI 144 select CSRC_R4K 145 select DMA_NONCOHERENT 146 select HAVE_PCI 147 select IRQ_MIPS_CPU 148 select MIPS_AUTO_PFN_OFFSET 149 select MIPS_CPU_SCACHE 150 select MIPS_GIC 151 select MIPS_L1_CACHE_SHIFT_7 152 select NO_EXCEPT_FILL 153 select PCI_DRIVERS_GENERIC 154 select SMP_UP if SMP 155 select SWAP_IO_SPACE 156 select SYS_HAS_CPU_MIPS32_R1 157 select SYS_HAS_CPU_MIPS32_R2 158 select SYS_HAS_CPU_MIPS32_R6 159 select SYS_HAS_CPU_MIPS64_R1 160 select SYS_HAS_CPU_MIPS64_R2 161 select SYS_HAS_CPU_MIPS64_R6 162 select SYS_SUPPORTS_32BIT_KERNEL 163 select SYS_SUPPORTS_64BIT_KERNEL 164 select SYS_SUPPORTS_BIG_ENDIAN 165 select SYS_SUPPORTS_HIGHMEM 166 select SYS_SUPPORTS_LITTLE_ENDIAN 167 select SYS_SUPPORTS_MICROMIPS 168 select SYS_SUPPORTS_MIPS16 169 select SYS_SUPPORTS_MIPS_CPS 170 select SYS_SUPPORTS_MULTITHREADING 171 select SYS_SUPPORTS_RELOCATABLE 172 select SYS_SUPPORTS_SMARTMIPS 173 select SYS_SUPPORTS_ZBOOT 174 select UHI_BOOT 175 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 176 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 177 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 178 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 179 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 180 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 181 select USE_OF 182 help 183 Select this to build a kernel which aims to support multiple boards, 184 generally using a flattened device tree passed from the bootloader 185 using the boot protocol defined in the UHI (Unified Hosting 186 Interface) specification. 187 188config MIPS_ALCHEMY 189 bool "Alchemy processor based machines" 190 select PHYS_ADDR_T_64BIT 191 select CEVT_R4K 192 select CSRC_R4K 193 select IRQ_MIPS_CPU 194 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is 195 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 196 select SYS_HAS_CPU_MIPS32_R1 197 select SYS_SUPPORTS_32BIT_KERNEL 198 select SYS_SUPPORTS_APM_EMULATION 199 select GPIOLIB 200 select SYS_SUPPORTS_ZBOOT 201 select COMMON_CLK 202 203config AR7 204 bool "Texas Instruments AR7" 205 select BOOT_ELF32 206 select COMMON_CLK 207 select DMA_NONCOHERENT 208 select CEVT_R4K 209 select CSRC_R4K 210 select IRQ_MIPS_CPU 211 select NO_EXCEPT_FILL 212 select SWAP_IO_SPACE 213 select SYS_HAS_CPU_MIPS32_R1 214 select SYS_HAS_EARLY_PRINTK 215 select SYS_SUPPORTS_32BIT_KERNEL 216 select SYS_SUPPORTS_LITTLE_ENDIAN 217 select SYS_SUPPORTS_MIPS16 218 select SYS_SUPPORTS_ZBOOT_UART16550 219 select GPIOLIB 220 select VLYNQ 221 help 222 Support for the Texas Instruments AR7 System-on-a-Chip 223 family: TNETD7100, 7200 and 7300. 224 225config ATH25 226 bool "Atheros AR231x/AR531x SoC support" 227 select CEVT_R4K 228 select CSRC_R4K 229 select DMA_NONCOHERENT 230 select IRQ_MIPS_CPU 231 select IRQ_DOMAIN 232 select SYS_HAS_CPU_MIPS32_R1 233 select SYS_SUPPORTS_BIG_ENDIAN 234 select SYS_SUPPORTS_32BIT_KERNEL 235 select SYS_HAS_EARLY_PRINTK 236 help 237 Support for Atheros AR231x and Atheros AR531x based boards 238 239config ATH79 240 bool "Atheros AR71XX/AR724X/AR913X based boards" 241 select ARCH_HAS_RESET_CONTROLLER 242 select BOOT_RAW 243 select CEVT_R4K 244 select CSRC_R4K 245 select DMA_NONCOHERENT 246 select GPIOLIB 247 select PINCTRL 248 select COMMON_CLK 249 select IRQ_MIPS_CPU 250 select SYS_HAS_CPU_MIPS32_R2 251 select SYS_HAS_EARLY_PRINTK 252 select SYS_SUPPORTS_32BIT_KERNEL 253 select SYS_SUPPORTS_BIG_ENDIAN 254 select SYS_SUPPORTS_MIPS16 255 select SYS_SUPPORTS_ZBOOT_UART_PROM 256 select USE_OF 257 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 258 help 259 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 260 261config BMIPS_GENERIC 262 bool "Broadcom Generic BMIPS kernel" 263 select ARCH_HAS_RESET_CONTROLLER 264 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 265 select ARCH_HAS_PHYS_TO_DMA 266 select BOOT_RAW 267 select NO_EXCEPT_FILL 268 select USE_OF 269 select CEVT_R4K 270 select CSRC_R4K 271 select SYNC_R4K 272 select COMMON_CLK 273 select BCM6345_L1_IRQ 274 select BCM7038_L1_IRQ 275 select BCM7120_L2_IRQ 276 select BRCMSTB_L2_IRQ 277 select IRQ_MIPS_CPU 278 select DMA_NONCOHERENT 279 select SYS_SUPPORTS_32BIT_KERNEL 280 select SYS_SUPPORTS_LITTLE_ENDIAN 281 select SYS_SUPPORTS_BIG_ENDIAN 282 select SYS_SUPPORTS_HIGHMEM 283 select SYS_HAS_CPU_BMIPS32_3300 284 select SYS_HAS_CPU_BMIPS4350 285 select SYS_HAS_CPU_BMIPS4380 286 select SYS_HAS_CPU_BMIPS5000 287 select SWAP_IO_SPACE 288 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 289 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 290 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 291 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 292 select HARDIRQS_SW_RESEND 293 help 294 Build a generic DT-based kernel image that boots on select 295 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 296 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 297 must be set appropriately for your board. 298 299config BCM47XX 300 bool "Broadcom BCM47XX based boards" 301 select BOOT_RAW 302 select CEVT_R4K 303 select CSRC_R4K 304 select DMA_NONCOHERENT 305 select HAVE_PCI 306 select IRQ_MIPS_CPU 307 select SYS_HAS_CPU_MIPS32_R1 308 select NO_EXCEPT_FILL 309 select SYS_SUPPORTS_32BIT_KERNEL 310 select SYS_SUPPORTS_LITTLE_ENDIAN 311 select SYS_SUPPORTS_MIPS16 312 select SYS_SUPPORTS_ZBOOT 313 select SYS_HAS_EARLY_PRINTK 314 select USE_GENERIC_EARLY_PRINTK_8250 315 select GPIOLIB 316 select LEDS_GPIO_REGISTER 317 select BCM47XX_NVRAM 318 select BCM47XX_SPROM 319 select BCM47XX_SSB if !BCM47XX_BCMA 320 help 321 Support for BCM47XX based boards 322 323config BCM63XX 324 bool "Broadcom BCM63XX based boards" 325 select BOOT_RAW 326 select CEVT_R4K 327 select CSRC_R4K 328 select SYNC_R4K 329 select DMA_NONCOHERENT 330 select IRQ_MIPS_CPU 331 select SYS_SUPPORTS_32BIT_KERNEL 332 select SYS_SUPPORTS_BIG_ENDIAN 333 select SYS_HAS_EARLY_PRINTK 334 select SWAP_IO_SPACE 335 select GPIOLIB 336 select MIPS_L1_CACHE_SHIFT_4 337 select HAVE_LEGACY_CLK 338 help 339 Support for BCM63XX based boards 340 341config MIPS_COBALT 342 bool "Cobalt Server" 343 select CEVT_R4K 344 select CSRC_R4K 345 select CEVT_GT641XX 346 select DMA_NONCOHERENT 347 select FORCE_PCI 348 select I8253 349 select I8259 350 select IRQ_MIPS_CPU 351 select IRQ_GT641XX 352 select PCI_GT64XXX_PCI0 353 select SYS_HAS_CPU_NEVADA 354 select SYS_HAS_EARLY_PRINTK 355 select SYS_SUPPORTS_32BIT_KERNEL 356 select SYS_SUPPORTS_64BIT_KERNEL 357 select SYS_SUPPORTS_LITTLE_ENDIAN 358 select USE_GENERIC_EARLY_PRINTK_8250 359 360config MACH_DECSTATION 361 bool "DECstations" 362 select BOOT_ELF32 363 select CEVT_DS1287 364 select CEVT_R4K if CPU_R4X00 365 select CSRC_IOASIC 366 select CSRC_R4K if CPU_R4X00 367 select CPU_DADDI_WORKAROUNDS if 64BIT 368 select CPU_R4000_WORKAROUNDS if 64BIT 369 select CPU_R4400_WORKAROUNDS if 64BIT 370 select DMA_NONCOHERENT 371 select NO_IOPORT_MAP 372 select IRQ_MIPS_CPU 373 select SYS_HAS_CPU_R3000 374 select SYS_HAS_CPU_R4X00 375 select SYS_SUPPORTS_32BIT_KERNEL 376 select SYS_SUPPORTS_64BIT_KERNEL 377 select SYS_SUPPORTS_LITTLE_ENDIAN 378 select SYS_SUPPORTS_128HZ 379 select SYS_SUPPORTS_256HZ 380 select SYS_SUPPORTS_1024HZ 381 select MIPS_L1_CACHE_SHIFT_4 382 help 383 This enables support for DEC's MIPS based workstations. For details 384 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 385 DECstation porting pages on <http://decstation.unix-ag.org/>. 386 387 If you have one of the following DECstation Models you definitely 388 want to choose R4xx0 for the CPU Type: 389 390 DECstation 5000/50 391 DECstation 5000/150 392 DECstation 5000/260 393 DECsystem 5900/260 394 395 otherwise choose R3000. 396 397config MACH_JAZZ 398 bool "Jazz family of machines" 399 select ARC_MEMORY 400 select ARC_PROMLIB 401 select ARCH_MIGHT_HAVE_PC_PARPORT 402 select ARCH_MIGHT_HAVE_PC_SERIO 403 select DMA_OPS 404 select FW_ARC 405 select FW_ARC32 406 select ARCH_MAY_HAVE_PC_FDC 407 select CEVT_R4K 408 select CSRC_R4K 409 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 410 select GENERIC_ISA_DMA 411 select HAVE_PCSPKR_PLATFORM 412 select IRQ_MIPS_CPU 413 select I8253 414 select I8259 415 select ISA 416 select SYS_HAS_CPU_R4X00 417 select SYS_SUPPORTS_32BIT_KERNEL 418 select SYS_SUPPORTS_64BIT_KERNEL 419 select SYS_SUPPORTS_100HZ 420 select SYS_SUPPORTS_LITTLE_ENDIAN 421 help 422 This a family of machines based on the MIPS R4030 chipset which was 423 used by several vendors to build RISC/os and Windows NT workstations. 424 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 425 Olivetti M700-10 workstations. 426 427config MACH_INGENIC_SOC 428 bool "Ingenic SoC based machines" 429 select MIPS_GENERIC 430 select MACH_INGENIC 431 select SYS_SUPPORTS_ZBOOT_UART16550 432 select CPU_SUPPORTS_CPUFREQ 433 select MIPS_EXTERNAL_TIMER 434 435config LANTIQ 436 bool "Lantiq based platforms" 437 select DMA_NONCOHERENT 438 select IRQ_MIPS_CPU 439 select CEVT_R4K 440 select CSRC_R4K 441 select SYS_HAS_CPU_MIPS32_R1 442 select SYS_HAS_CPU_MIPS32_R2 443 select SYS_SUPPORTS_BIG_ENDIAN 444 select SYS_SUPPORTS_32BIT_KERNEL 445 select SYS_SUPPORTS_MIPS16 446 select SYS_SUPPORTS_MULTITHREADING 447 select SYS_SUPPORTS_VPE_LOADER 448 select SYS_HAS_EARLY_PRINTK 449 select GPIOLIB 450 select SWAP_IO_SPACE 451 select BOOT_RAW 452 select HAVE_LEGACY_CLK 453 select USE_OF 454 select PINCTRL 455 select PINCTRL_LANTIQ 456 select ARCH_HAS_RESET_CONTROLLER 457 select RESET_CONTROLLER 458 459config MACH_LOONGSON32 460 bool "Loongson 32-bit family of machines" 461 select SYS_SUPPORTS_ZBOOT 462 help 463 This enables support for the Loongson-1 family of machines. 464 465 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 466 the Institute of Computing Technology (ICT), Chinese Academy of 467 Sciences (CAS). 468 469config MACH_LOONGSON2EF 470 bool "Loongson-2E/F family of machines" 471 select SYS_SUPPORTS_ZBOOT 472 help 473 This enables the support of early Loongson-2E/F family of machines. 474 475config MACH_LOONGSON64 476 bool "Loongson 64-bit family of machines" 477 select ARCH_SPARSEMEM_ENABLE 478 select ARCH_MIGHT_HAVE_PC_PARPORT 479 select ARCH_MIGHT_HAVE_PC_SERIO 480 select GENERIC_ISA_DMA_SUPPORT_BROKEN 481 select BOOT_ELF32 482 select BOARD_SCACHE 483 select CSRC_R4K 484 select CEVT_R4K 485 select CPU_HAS_WB 486 select FORCE_PCI 487 select ISA 488 select I8259 489 select IRQ_MIPS_CPU 490 select NO_EXCEPT_FILL 491 select NR_CPUS_DEFAULT_64 492 select USE_GENERIC_EARLY_PRINTK_8250 493 select PCI_DRIVERS_GENERIC 494 select SYS_HAS_CPU_LOONGSON64 495 select SYS_HAS_EARLY_PRINTK 496 select SYS_SUPPORTS_SMP 497 select SYS_SUPPORTS_HOTPLUG_CPU 498 select SYS_SUPPORTS_NUMA 499 select SYS_SUPPORTS_64BIT_KERNEL 500 select SYS_SUPPORTS_HIGHMEM 501 select SYS_SUPPORTS_LITTLE_ENDIAN 502 select SYS_SUPPORTS_ZBOOT 503 select SYS_SUPPORTS_RELOCATABLE 504 select ZONE_DMA32 505 select COMMON_CLK 506 select USE_OF 507 select BUILTIN_DTB 508 select PCI_HOST_GENERIC 509 help 510 This enables the support of Loongson-2/3 family of machines. 511 512 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 513 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 514 and Loongson-2F which will be removed), developed by the Institute 515 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 516 517config MIPS_MALTA 518 bool "MIPS Malta board" 519 select ARCH_MAY_HAVE_PC_FDC 520 select ARCH_MIGHT_HAVE_PC_PARPORT 521 select ARCH_MIGHT_HAVE_PC_SERIO 522 select BOOT_ELF32 523 select BOOT_RAW 524 select BUILTIN_DTB 525 select CEVT_R4K 526 select CLKSRC_MIPS_GIC 527 select COMMON_CLK 528 select CSRC_R4K 529 select DMA_NONCOHERENT 530 select GENERIC_ISA_DMA 531 select HAVE_PCSPKR_PLATFORM 532 select HAVE_PCI 533 select I8253 534 select I8259 535 select IRQ_MIPS_CPU 536 select MIPS_BONITO64 537 select MIPS_CPU_SCACHE 538 select MIPS_GIC 539 select MIPS_L1_CACHE_SHIFT_6 540 select MIPS_MSC 541 select PCI_GT64XXX_PCI0 542 select SMP_UP if SMP 543 select SWAP_IO_SPACE 544 select SYS_HAS_CPU_MIPS32_R1 545 select SYS_HAS_CPU_MIPS32_R2 546 select SYS_HAS_CPU_MIPS32_R3_5 547 select SYS_HAS_CPU_MIPS32_R5 548 select SYS_HAS_CPU_MIPS32_R6 549 select SYS_HAS_CPU_MIPS64_R1 550 select SYS_HAS_CPU_MIPS64_R2 551 select SYS_HAS_CPU_MIPS64_R6 552 select SYS_HAS_CPU_NEVADA 553 select SYS_HAS_CPU_RM7000 554 select SYS_SUPPORTS_32BIT_KERNEL 555 select SYS_SUPPORTS_64BIT_KERNEL 556 select SYS_SUPPORTS_BIG_ENDIAN 557 select SYS_SUPPORTS_HIGHMEM 558 select SYS_SUPPORTS_LITTLE_ENDIAN 559 select SYS_SUPPORTS_MICROMIPS 560 select SYS_SUPPORTS_MIPS16 561 select SYS_SUPPORTS_MIPS_CMP 562 select SYS_SUPPORTS_MIPS_CPS 563 select SYS_SUPPORTS_MULTITHREADING 564 select SYS_SUPPORTS_RELOCATABLE 565 select SYS_SUPPORTS_SMARTMIPS 566 select SYS_SUPPORTS_VPE_LOADER 567 select SYS_SUPPORTS_ZBOOT 568 select USE_OF 569 select WAR_ICACHE_REFILLS 570 select ZONE_DMA32 if 64BIT 571 help 572 This enables support for the MIPS Technologies Malta evaluation 573 board. 574 575config MACH_PIC32 576 bool "Microchip PIC32 Family" 577 help 578 This enables support for the Microchip PIC32 family of platforms. 579 580 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 581 microcontrollers. 582 583config MACH_VR41XX 584 bool "NEC VR4100 series based machines" 585 select CEVT_R4K 586 select CSRC_R4K 587 select SYS_HAS_CPU_VR41XX 588 select SYS_SUPPORTS_MIPS16 589 select GPIOLIB 590 591config MACH_NINTENDO64 592 bool "Nintendo 64 console" 593 select CEVT_R4K 594 select CSRC_R4K 595 select SYS_HAS_CPU_R4300 596 select SYS_SUPPORTS_BIG_ENDIAN 597 select SYS_SUPPORTS_ZBOOT 598 select SYS_SUPPORTS_32BIT_KERNEL 599 select SYS_SUPPORTS_64BIT_KERNEL 600 select DMA_NONCOHERENT 601 select IRQ_MIPS_CPU 602 603config RALINK 604 bool "Ralink based machines" 605 select CEVT_R4K 606 select COMMON_CLK 607 select CSRC_R4K 608 select BOOT_RAW 609 select DMA_NONCOHERENT 610 select IRQ_MIPS_CPU 611 select USE_OF 612 select SYS_HAS_CPU_MIPS32_R1 613 select SYS_HAS_CPU_MIPS32_R2 614 select SYS_SUPPORTS_32BIT_KERNEL 615 select SYS_SUPPORTS_LITTLE_ENDIAN 616 select SYS_SUPPORTS_MIPS16 617 select SYS_SUPPORTS_ZBOOT 618 select SYS_HAS_EARLY_PRINTK 619 select ARCH_HAS_RESET_CONTROLLER 620 select RESET_CONTROLLER 621 622config MACH_REALTEK_RTL 623 bool "Realtek RTL838x/RTL839x based machines" 624 select MIPS_GENERIC 625 select DMA_NONCOHERENT 626 select IRQ_MIPS_CPU 627 select CSRC_R4K 628 select CEVT_R4K 629 select SYS_HAS_CPU_MIPS32_R1 630 select SYS_HAS_CPU_MIPS32_R2 631 select SYS_SUPPORTS_BIG_ENDIAN 632 select SYS_SUPPORTS_32BIT_KERNEL 633 select SYS_SUPPORTS_MIPS16 634 select SYS_SUPPORTS_MULTITHREADING 635 select SYS_SUPPORTS_VPE_LOADER 636 select SYS_HAS_EARLY_PRINTK 637 select SYS_HAS_EARLY_PRINTK_8250 638 select USE_GENERIC_EARLY_PRINTK_8250 639 select BOOT_RAW 640 select PINCTRL 641 select USE_OF 642 643config SGI_IP22 644 bool "SGI IP22 (Indy/Indigo2)" 645 select ARC_MEMORY 646 select ARC_PROMLIB 647 select FW_ARC 648 select FW_ARC32 649 select ARCH_MIGHT_HAVE_PC_SERIO 650 select BOOT_ELF32 651 select CEVT_R4K 652 select CSRC_R4K 653 select DEFAULT_SGI_PARTITION 654 select DMA_NONCOHERENT 655 select HAVE_EISA 656 select I8253 657 select I8259 658 select IP22_CPU_SCACHE 659 select IRQ_MIPS_CPU 660 select GENERIC_ISA_DMA_SUPPORT_BROKEN 661 select SGI_HAS_I8042 662 select SGI_HAS_INDYDOG 663 select SGI_HAS_HAL2 664 select SGI_HAS_SEEQ 665 select SGI_HAS_WD93 666 select SGI_HAS_ZILOG 667 select SWAP_IO_SPACE 668 select SYS_HAS_CPU_R4X00 669 select SYS_HAS_CPU_R5000 670 select SYS_HAS_EARLY_PRINTK 671 select SYS_SUPPORTS_32BIT_KERNEL 672 select SYS_SUPPORTS_64BIT_KERNEL 673 select SYS_SUPPORTS_BIG_ENDIAN 674 select WAR_R4600_V1_INDEX_ICACHEOP 675 select WAR_R4600_V1_HIT_CACHEOP 676 select WAR_R4600_V2_HIT_CACHEOP 677 select MIPS_L1_CACHE_SHIFT_7 678 help 679 This are the SGI Indy, Challenge S and Indigo2, as well as certain 680 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 681 that runs on these, say Y here. 682 683config SGI_IP27 684 bool "SGI IP27 (Origin200/2000)" 685 select ARCH_HAS_PHYS_TO_DMA 686 select ARCH_SPARSEMEM_ENABLE 687 select FW_ARC 688 select FW_ARC64 689 select ARC_CMDLINE_ONLY 690 select BOOT_ELF64 691 select DEFAULT_SGI_PARTITION 692 select FORCE_PCI 693 select SYS_HAS_EARLY_PRINTK 694 select HAVE_PCI 695 select IRQ_MIPS_CPU 696 select IRQ_DOMAIN_HIERARCHY 697 select NR_CPUS_DEFAULT_64 698 select PCI_DRIVERS_GENERIC 699 select PCI_XTALK_BRIDGE 700 select SYS_HAS_CPU_R10000 701 select SYS_SUPPORTS_64BIT_KERNEL 702 select SYS_SUPPORTS_BIG_ENDIAN 703 select SYS_SUPPORTS_NUMA 704 select SYS_SUPPORTS_SMP 705 select WAR_R10000_LLSC 706 select MIPS_L1_CACHE_SHIFT_7 707 select NUMA 708 help 709 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 710 workstations. To compile a Linux kernel that runs on these, say Y 711 here. 712 713config SGI_IP28 714 bool "SGI IP28 (Indigo2 R10k)" 715 select ARC_MEMORY 716 select ARC_PROMLIB 717 select FW_ARC 718 select FW_ARC64 719 select ARCH_MIGHT_HAVE_PC_SERIO 720 select BOOT_ELF64 721 select CEVT_R4K 722 select CSRC_R4K 723 select DEFAULT_SGI_PARTITION 724 select DMA_NONCOHERENT 725 select GENERIC_ISA_DMA_SUPPORT_BROKEN 726 select IRQ_MIPS_CPU 727 select HAVE_EISA 728 select I8253 729 select I8259 730 select SGI_HAS_I8042 731 select SGI_HAS_INDYDOG 732 select SGI_HAS_HAL2 733 select SGI_HAS_SEEQ 734 select SGI_HAS_WD93 735 select SGI_HAS_ZILOG 736 select SWAP_IO_SPACE 737 select SYS_HAS_CPU_R10000 738 select SYS_HAS_EARLY_PRINTK 739 select SYS_SUPPORTS_64BIT_KERNEL 740 select SYS_SUPPORTS_BIG_ENDIAN 741 select WAR_R10000_LLSC 742 select MIPS_L1_CACHE_SHIFT_7 743 help 744 This is the SGI Indigo2 with R10000 processor. To compile a Linux 745 kernel that runs on these, say Y here. 746 747config SGI_IP30 748 bool "SGI IP30 (Octane/Octane2)" 749 select ARCH_HAS_PHYS_TO_DMA 750 select FW_ARC 751 select FW_ARC64 752 select BOOT_ELF64 753 select CEVT_R4K 754 select CSRC_R4K 755 select FORCE_PCI 756 select SYNC_R4K if SMP 757 select ZONE_DMA32 758 select HAVE_PCI 759 select IRQ_MIPS_CPU 760 select IRQ_DOMAIN_HIERARCHY 761 select NR_CPUS_DEFAULT_2 762 select PCI_DRIVERS_GENERIC 763 select PCI_XTALK_BRIDGE 764 select SYS_HAS_EARLY_PRINTK 765 select SYS_HAS_CPU_R10000 766 select SYS_SUPPORTS_64BIT_KERNEL 767 select SYS_SUPPORTS_BIG_ENDIAN 768 select SYS_SUPPORTS_SMP 769 select WAR_R10000_LLSC 770 select MIPS_L1_CACHE_SHIFT_7 771 select ARC_MEMORY 772 help 773 These are the SGI Octane and Octane2 graphics workstations. To 774 compile a Linux kernel that runs on these, say Y here. 775 776config SGI_IP32 777 bool "SGI IP32 (O2)" 778 select ARC_MEMORY 779 select ARC_PROMLIB 780 select ARCH_HAS_PHYS_TO_DMA 781 select FW_ARC 782 select FW_ARC32 783 select BOOT_ELF32 784 select CEVT_R4K 785 select CSRC_R4K 786 select DMA_NONCOHERENT 787 select HAVE_PCI 788 select IRQ_MIPS_CPU 789 select R5000_CPU_SCACHE 790 select RM7000_CPU_SCACHE 791 select SYS_HAS_CPU_R5000 792 select SYS_HAS_CPU_R10000 if BROKEN 793 select SYS_HAS_CPU_RM7000 794 select SYS_HAS_CPU_NEVADA 795 select SYS_SUPPORTS_64BIT_KERNEL 796 select SYS_SUPPORTS_BIG_ENDIAN 797 select WAR_ICACHE_REFILLS 798 help 799 If you want this kernel to run on SGI O2 workstation, say Y here. 800 801config SIBYTE_CRHINE 802 bool "Sibyte BCM91120C-CRhine" 803 select BOOT_ELF32 804 select SIBYTE_BCM1120 805 select SWAP_IO_SPACE 806 select SYS_HAS_CPU_SB1 807 select SYS_SUPPORTS_BIG_ENDIAN 808 select SYS_SUPPORTS_LITTLE_ENDIAN 809 810config SIBYTE_CARMEL 811 bool "Sibyte BCM91120x-Carmel" 812 select BOOT_ELF32 813 select SIBYTE_BCM1120 814 select SWAP_IO_SPACE 815 select SYS_HAS_CPU_SB1 816 select SYS_SUPPORTS_BIG_ENDIAN 817 select SYS_SUPPORTS_LITTLE_ENDIAN 818 819config SIBYTE_CRHONE 820 bool "Sibyte BCM91125C-CRhone" 821 select BOOT_ELF32 822 select SIBYTE_BCM1125 823 select SWAP_IO_SPACE 824 select SYS_HAS_CPU_SB1 825 select SYS_SUPPORTS_BIG_ENDIAN 826 select SYS_SUPPORTS_HIGHMEM 827 select SYS_SUPPORTS_LITTLE_ENDIAN 828 829config SIBYTE_RHONE 830 bool "Sibyte BCM91125E-Rhone" 831 select BOOT_ELF32 832 select SIBYTE_BCM1125H 833 select SWAP_IO_SPACE 834 select SYS_HAS_CPU_SB1 835 select SYS_SUPPORTS_BIG_ENDIAN 836 select SYS_SUPPORTS_LITTLE_ENDIAN 837 838config SIBYTE_SWARM 839 bool "Sibyte BCM91250A-SWARM" 840 select BOOT_ELF32 841 select HAVE_PATA_PLATFORM 842 select SIBYTE_SB1250 843 select SWAP_IO_SPACE 844 select SYS_HAS_CPU_SB1 845 select SYS_SUPPORTS_BIG_ENDIAN 846 select SYS_SUPPORTS_HIGHMEM 847 select SYS_SUPPORTS_LITTLE_ENDIAN 848 select ZONE_DMA32 if 64BIT 849 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 850 851config SIBYTE_LITTLESUR 852 bool "Sibyte BCM91250C2-LittleSur" 853 select BOOT_ELF32 854 select HAVE_PATA_PLATFORM 855 select SIBYTE_SB1250 856 select SWAP_IO_SPACE 857 select SYS_HAS_CPU_SB1 858 select SYS_SUPPORTS_BIG_ENDIAN 859 select SYS_SUPPORTS_HIGHMEM 860 select SYS_SUPPORTS_LITTLE_ENDIAN 861 select ZONE_DMA32 if 64BIT 862 863config SIBYTE_SENTOSA 864 bool "Sibyte BCM91250E-Sentosa" 865 select BOOT_ELF32 866 select SIBYTE_SB1250 867 select SWAP_IO_SPACE 868 select SYS_HAS_CPU_SB1 869 select SYS_SUPPORTS_BIG_ENDIAN 870 select SYS_SUPPORTS_LITTLE_ENDIAN 871 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 872 873config SIBYTE_BIGSUR 874 bool "Sibyte BCM91480B-BigSur" 875 select BOOT_ELF32 876 select NR_CPUS_DEFAULT_4 877 select SIBYTE_BCM1x80 878 select SWAP_IO_SPACE 879 select SYS_HAS_CPU_SB1 880 select SYS_SUPPORTS_BIG_ENDIAN 881 select SYS_SUPPORTS_HIGHMEM 882 select SYS_SUPPORTS_LITTLE_ENDIAN 883 select ZONE_DMA32 if 64BIT 884 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 885 886config SNI_RM 887 bool "SNI RM200/300/400" 888 select ARC_MEMORY 889 select ARC_PROMLIB 890 select FW_ARC if CPU_LITTLE_ENDIAN 891 select FW_ARC32 if CPU_LITTLE_ENDIAN 892 select FW_SNIPROM if CPU_BIG_ENDIAN 893 select ARCH_MAY_HAVE_PC_FDC 894 select ARCH_MIGHT_HAVE_PC_PARPORT 895 select ARCH_MIGHT_HAVE_PC_SERIO 896 select BOOT_ELF32 897 select CEVT_R4K 898 select CSRC_R4K 899 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 900 select DMA_NONCOHERENT 901 select GENERIC_ISA_DMA 902 select HAVE_EISA 903 select HAVE_PCSPKR_PLATFORM 904 select HAVE_PCI 905 select IRQ_MIPS_CPU 906 select I8253 907 select I8259 908 select ISA 909 select MIPS_L1_CACHE_SHIFT_6 910 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 911 select SYS_HAS_CPU_R4X00 912 select SYS_HAS_CPU_R5000 913 select SYS_HAS_CPU_R10000 914 select R5000_CPU_SCACHE 915 select SYS_HAS_EARLY_PRINTK 916 select SYS_SUPPORTS_32BIT_KERNEL 917 select SYS_SUPPORTS_64BIT_KERNEL 918 select SYS_SUPPORTS_BIG_ENDIAN 919 select SYS_SUPPORTS_HIGHMEM 920 select SYS_SUPPORTS_LITTLE_ENDIAN 921 select WAR_R4600_V2_HIT_CACHEOP 922 help 923 The SNI RM200/300/400 are MIPS-based machines manufactured by 924 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 925 Technology and now in turn merged with Fujitsu. Say Y here to 926 support this machine type. 927 928config MACH_TX39XX 929 bool "Toshiba TX39 series based machines" 930 931config MACH_TX49XX 932 bool "Toshiba TX49 series based machines" 933 select WAR_TX49XX_ICACHE_INDEX_INV 934 935config MIKROTIK_RB532 936 bool "Mikrotik RB532 boards" 937 select CEVT_R4K 938 select CSRC_R4K 939 select DMA_NONCOHERENT 940 select HAVE_PCI 941 select IRQ_MIPS_CPU 942 select SYS_HAS_CPU_MIPS32_R1 943 select SYS_SUPPORTS_32BIT_KERNEL 944 select SYS_SUPPORTS_LITTLE_ENDIAN 945 select SWAP_IO_SPACE 946 select BOOT_RAW 947 select GPIOLIB 948 select MIPS_L1_CACHE_SHIFT_4 949 help 950 Support the Mikrotik(tm) RouterBoard 532 series, 951 based on the IDT RC32434 SoC. 952 953config CAVIUM_OCTEON_SOC 954 bool "Cavium Networks Octeon SoC based boards" 955 select CEVT_R4K 956 select ARCH_HAS_PHYS_TO_DMA 957 select HAVE_RAPIDIO 958 select PHYS_ADDR_T_64BIT 959 select SYS_SUPPORTS_64BIT_KERNEL 960 select SYS_SUPPORTS_BIG_ENDIAN 961 select EDAC_SUPPORT 962 select EDAC_ATOMIC_SCRUB 963 select SYS_SUPPORTS_LITTLE_ENDIAN 964 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 965 select SYS_HAS_EARLY_PRINTK 966 select SYS_HAS_CPU_CAVIUM_OCTEON 967 select HAVE_PCI 968 select HAVE_PLAT_DELAY 969 select HAVE_PLAT_FW_INIT_CMDLINE 970 select HAVE_PLAT_MEMCPY 971 select ZONE_DMA32 972 select GPIOLIB 973 select USE_OF 974 select ARCH_SPARSEMEM_ENABLE 975 select SYS_SUPPORTS_SMP 976 select NR_CPUS_DEFAULT_64 977 select MIPS_NR_CPU_NR_MAP_1024 978 select BUILTIN_DTB 979 select MTD 980 select MTD_COMPLEX_MAPPINGS 981 select SWIOTLB 982 select SYS_SUPPORTS_RELOCATABLE 983 help 984 This option supports all of the Octeon reference boards from Cavium 985 Networks. It builds a kernel that dynamically determines the Octeon 986 CPU type and supports all known board reference implementations. 987 Some of the supported boards are: 988 EBT3000 989 EBH3000 990 EBH3100 991 Thunder 992 Kodama 993 Hikari 994 Say Y here for most Octeon reference boards. 995 996config NLM_XLR_BOARD 997 bool "Netlogic XLR/XLS based systems" 998 select BOOT_ELF32 999 select NLM_COMMON 1000 select SYS_HAS_CPU_XLR 1001 select SYS_SUPPORTS_SMP 1002 select HAVE_PCI 1003 select SWAP_IO_SPACE 1004 select SYS_SUPPORTS_32BIT_KERNEL 1005 select SYS_SUPPORTS_64BIT_KERNEL 1006 select PHYS_ADDR_T_64BIT 1007 select SYS_SUPPORTS_BIG_ENDIAN 1008 select SYS_SUPPORTS_HIGHMEM 1009 select NR_CPUS_DEFAULT_32 1010 select CEVT_R4K 1011 select CSRC_R4K 1012 select IRQ_MIPS_CPU 1013 select ZONE_DMA32 if 64BIT 1014 select SYNC_R4K 1015 select SYS_HAS_EARLY_PRINTK 1016 select SYS_SUPPORTS_ZBOOT 1017 select SYS_SUPPORTS_ZBOOT_UART16550 1018 help 1019 Support for systems based on Netlogic XLR and XLS processors. 1020 Say Y here if you have a XLR or XLS based board. 1021 1022config NLM_XLP_BOARD 1023 bool "Netlogic XLP based systems" 1024 select BOOT_ELF32 1025 select NLM_COMMON 1026 select SYS_HAS_CPU_XLP 1027 select SYS_SUPPORTS_SMP 1028 select HAVE_PCI 1029 select SYS_SUPPORTS_32BIT_KERNEL 1030 select SYS_SUPPORTS_64BIT_KERNEL 1031 select PHYS_ADDR_T_64BIT 1032 select GPIOLIB 1033 select SYS_SUPPORTS_BIG_ENDIAN 1034 select SYS_SUPPORTS_LITTLE_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 USE_OF 1044 select SYS_SUPPORTS_ZBOOT 1045 select SYS_SUPPORTS_ZBOOT_UART16550 1046 help 1047 This board is based on Netlogic XLP Processor. 1048 Say Y here if you have a XLP based board. 1049 1050endchoice 1051 1052source "arch/mips/alchemy/Kconfig" 1053source "arch/mips/ath25/Kconfig" 1054source "arch/mips/ath79/Kconfig" 1055source "arch/mips/bcm47xx/Kconfig" 1056source "arch/mips/bcm63xx/Kconfig" 1057source "arch/mips/bmips/Kconfig" 1058source "arch/mips/generic/Kconfig" 1059source "arch/mips/ingenic/Kconfig" 1060source "arch/mips/jazz/Kconfig" 1061source "arch/mips/lantiq/Kconfig" 1062source "arch/mips/pic32/Kconfig" 1063source "arch/mips/ralink/Kconfig" 1064source "arch/mips/sgi-ip27/Kconfig" 1065source "arch/mips/sibyte/Kconfig" 1066source "arch/mips/txx9/Kconfig" 1067source "arch/mips/vr41xx/Kconfig" 1068source "arch/mips/cavium-octeon/Kconfig" 1069source "arch/mips/loongson2ef/Kconfig" 1070source "arch/mips/loongson32/Kconfig" 1071source "arch/mips/loongson64/Kconfig" 1072source "arch/mips/netlogic/Kconfig" 1073 1074endmenu 1075 1076config GENERIC_HWEIGHT 1077 bool 1078 default y 1079 1080config GENERIC_CALIBRATE_DELAY 1081 bool 1082 default y 1083 1084config SCHED_OMIT_FRAME_POINTER 1085 bool 1086 default y 1087 1088# 1089# Select some configuration options automatically based on user selections. 1090# 1091config FW_ARC 1092 bool 1093 1094config ARCH_MAY_HAVE_PC_FDC 1095 bool 1096 1097config BOOT_RAW 1098 bool 1099 1100config CEVT_BCM1480 1101 bool 1102 1103config CEVT_DS1287 1104 bool 1105 1106config CEVT_GT641XX 1107 bool 1108 1109config CEVT_R4K 1110 bool 1111 1112config CEVT_SB1250 1113 bool 1114 1115config CEVT_TXX9 1116 bool 1117 1118config CSRC_BCM1480 1119 bool 1120 1121config CSRC_IOASIC 1122 bool 1123 1124config CSRC_R4K 1125 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1126 bool 1127 1128config CSRC_SB1250 1129 bool 1130 1131config MIPS_CLOCK_VSYSCALL 1132 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1133 1134config GPIO_TXX9 1135 select GPIOLIB 1136 bool 1137 1138config FW_CFE 1139 bool 1140 1141config ARCH_SUPPORTS_UPROBES 1142 bool 1143 1144config DMA_PERDEV_COHERENT 1145 bool 1146 select ARCH_HAS_SETUP_DMA_OPS 1147 select DMA_NONCOHERENT 1148 1149config DMA_NONCOHERENT 1150 bool 1151 # 1152 # MIPS allows mixing "slightly different" Cacheability and Coherency 1153 # Attribute bits. It is believed that the uncached access through 1154 # KSEG1 and the implementation specific "uncached accelerated" used 1155 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1156 # significant advantages. 1157 # 1158 select ARCH_HAS_DMA_WRITE_COMBINE 1159 select ARCH_HAS_DMA_PREP_COHERENT 1160 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1161 select ARCH_HAS_DMA_SET_UNCACHED 1162 select DMA_NONCOHERENT_MMAP 1163 select NEED_DMA_MAP_STATE 1164 1165config SYS_HAS_EARLY_PRINTK 1166 bool 1167 1168config SYS_SUPPORTS_HOTPLUG_CPU 1169 bool 1170 1171config MIPS_BONITO64 1172 bool 1173 1174config MIPS_MSC 1175 bool 1176 1177config SYNC_R4K 1178 bool 1179 1180config NO_IOPORT_MAP 1181 def_bool n 1182 1183config GENERIC_CSUM 1184 def_bool CPU_NO_LOAD_STORE_LR 1185 1186config GENERIC_ISA_DMA 1187 bool 1188 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1189 select ISA_DMA_API 1190 1191config GENERIC_ISA_DMA_SUPPORT_BROKEN 1192 bool 1193 select GENERIC_ISA_DMA 1194 1195config HAVE_PLAT_DELAY 1196 bool 1197 1198config HAVE_PLAT_FW_INIT_CMDLINE 1199 bool 1200 1201config HAVE_PLAT_MEMCPY 1202 bool 1203 1204config ISA_DMA_API 1205 bool 1206 1207config SYS_SUPPORTS_RELOCATABLE 1208 bool 1209 help 1210 Selected if the platform supports relocating the kernel. 1211 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1212 to allow access to command line and entropy sources. 1213 1214config MIPS_CBPF_JIT 1215 def_bool y 1216 depends on BPF_JIT && HAVE_CBPF_JIT 1217 1218config MIPS_EBPF_JIT 1219 def_bool y 1220 depends on BPF_JIT && HAVE_EBPF_JIT 1221 1222 1223# 1224# Endianness selection. Sufficiently obscure so many users don't know what to 1225# answer,so we try hard to limit the available choices. Also the use of a 1226# choice statement should be more obvious to the user. 1227# 1228choice 1229 prompt "Endianness selection" 1230 help 1231 Some MIPS machines can be configured for either little or big endian 1232 byte order. These modes require different kernels and a different 1233 Linux distribution. In general there is one preferred byteorder for a 1234 particular system but some systems are just as commonly used in the 1235 one or the other endianness. 1236 1237config CPU_BIG_ENDIAN 1238 bool "Big endian" 1239 depends on SYS_SUPPORTS_BIG_ENDIAN 1240 1241config CPU_LITTLE_ENDIAN 1242 bool "Little endian" 1243 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1244 1245endchoice 1246 1247config EXPORT_UASM 1248 bool 1249 1250config SYS_SUPPORTS_APM_EMULATION 1251 bool 1252 1253config SYS_SUPPORTS_BIG_ENDIAN 1254 bool 1255 1256config SYS_SUPPORTS_LITTLE_ENDIAN 1257 bool 1258 1259config MIPS_HUGE_TLB_SUPPORT 1260 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1261 1262config IRQ_MSP_SLP 1263 bool 1264 1265config IRQ_MSP_CIC 1266 bool 1267 1268config IRQ_TXX9 1269 bool 1270 1271config IRQ_GT641XX 1272 bool 1273 1274config PCI_GT64XXX_PCI0 1275 bool 1276 1277config PCI_XTALK_BRIDGE 1278 bool 1279 1280config NO_EXCEPT_FILL 1281 bool 1282 1283config MIPS_SPRAM 1284 bool 1285 1286config SWAP_IO_SPACE 1287 bool 1288 1289config SGI_HAS_INDYDOG 1290 bool 1291 1292config SGI_HAS_HAL2 1293 bool 1294 1295config SGI_HAS_SEEQ 1296 bool 1297 1298config SGI_HAS_WD93 1299 bool 1300 1301config SGI_HAS_ZILOG 1302 bool 1303 1304config SGI_HAS_I8042 1305 bool 1306 1307config DEFAULT_SGI_PARTITION 1308 bool 1309 1310config FW_ARC32 1311 bool 1312 1313config FW_SNIPROM 1314 bool 1315 1316config BOOT_ELF32 1317 bool 1318 1319config MIPS_L1_CACHE_SHIFT_4 1320 bool 1321 1322config MIPS_L1_CACHE_SHIFT_5 1323 bool 1324 1325config MIPS_L1_CACHE_SHIFT_6 1326 bool 1327 1328config MIPS_L1_CACHE_SHIFT_7 1329 bool 1330 1331config MIPS_L1_CACHE_SHIFT 1332 int 1333 default "7" if MIPS_L1_CACHE_SHIFT_7 1334 default "6" if MIPS_L1_CACHE_SHIFT_6 1335 default "5" if MIPS_L1_CACHE_SHIFT_5 1336 default "4" if MIPS_L1_CACHE_SHIFT_4 1337 default "5" 1338 1339config ARC_CMDLINE_ONLY 1340 bool 1341 1342config ARC_CONSOLE 1343 bool "ARC console support" 1344 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1345 1346config ARC_MEMORY 1347 bool 1348 1349config ARC_PROMLIB 1350 bool 1351 1352config FW_ARC64 1353 bool 1354 1355config BOOT_ELF64 1356 bool 1357 1358menu "CPU selection" 1359 1360choice 1361 prompt "CPU type" 1362 default CPU_R4X00 1363 1364config CPU_LOONGSON64 1365 bool "Loongson 64-bit CPU" 1366 depends on SYS_HAS_CPU_LOONGSON64 1367 select ARCH_HAS_PHYS_TO_DMA 1368 select CPU_MIPSR2 1369 select CPU_HAS_PREFETCH 1370 select CPU_SUPPORTS_64BIT_KERNEL 1371 select CPU_SUPPORTS_HIGHMEM 1372 select CPU_SUPPORTS_HUGEPAGES 1373 select CPU_SUPPORTS_MSA 1374 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1375 select CPU_MIPSR2_IRQ_VI 1376 select WEAK_ORDERING 1377 select WEAK_REORDERING_BEYOND_LLSC 1378 select MIPS_ASID_BITS_VARIABLE 1379 select MIPS_PGD_C0_CONTEXT 1380 select MIPS_L1_CACHE_SHIFT_6 1381 select GPIOLIB 1382 select SWIOTLB 1383 select HAVE_KVM 1384 help 1385 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1386 cores implements the MIPS64R2 instruction set with many extensions, 1387 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1388 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1389 Loongson-2E/2F is not covered here and will be removed in future. 1390 1391config LOONGSON3_ENHANCEMENT 1392 bool "New Loongson-3 CPU Enhancements" 1393 default n 1394 depends on CPU_LOONGSON64 1395 help 1396 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1397 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1398 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1399 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1400 Fast TLB refill support, etc. 1401 1402 This option enable those enhancements which are not probed at run 1403 time. If you want a generic kernel to run on all Loongson 3 machines, 1404 please say 'N' here. If you want a high-performance kernel to run on 1405 new Loongson-3 machines only, please say 'Y' here. 1406 1407config CPU_LOONGSON3_WORKAROUNDS 1408 bool "Old Loongson-3 LLSC Workarounds" 1409 default y if SMP 1410 depends on CPU_LOONGSON64 1411 help 1412 Loongson-3 processors have the llsc issues which require workarounds. 1413 Without workarounds the system may hang unexpectedly. 1414 1415 Newer Loongson-3 will fix these issues and no workarounds are needed. 1416 The workarounds have no significant side effect on them but may 1417 decrease the performance of the system so this option should be 1418 disabled unless the kernel is intended to be run on old systems. 1419 1420 If unsure, please say Y. 1421 1422config CPU_LOONGSON3_CPUCFG_EMULATION 1423 bool "Emulate the CPUCFG instruction on older Loongson cores" 1424 default y 1425 depends on CPU_LOONGSON64 1426 help 1427 Loongson-3A R4 and newer have the CPUCFG instruction available for 1428 userland to query CPU capabilities, much like CPUID on x86. This 1429 option provides emulation of the instruction on older Loongson 1430 cores, back to Loongson-3A1000. 1431 1432 If unsure, please say Y. 1433 1434config CPU_LOONGSON2E 1435 bool "Loongson 2E" 1436 depends on SYS_HAS_CPU_LOONGSON2E 1437 select CPU_LOONGSON2EF 1438 help 1439 The Loongson 2E processor implements the MIPS III instruction set 1440 with many extensions. 1441 1442 It has an internal FPGA northbridge, which is compatible to 1443 bonito64. 1444 1445config CPU_LOONGSON2F 1446 bool "Loongson 2F" 1447 depends on SYS_HAS_CPU_LOONGSON2F 1448 select CPU_LOONGSON2EF 1449 select GPIOLIB 1450 help 1451 The Loongson 2F processor implements the MIPS III instruction set 1452 with many extensions. 1453 1454 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1455 have a similar programming interface with FPGA northbridge used in 1456 Loongson2E. 1457 1458config CPU_LOONGSON1B 1459 bool "Loongson 1B" 1460 depends on SYS_HAS_CPU_LOONGSON1B 1461 select CPU_LOONGSON32 1462 select LEDS_GPIO_REGISTER 1463 help 1464 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1465 Release 1 instruction set and part of the MIPS32 Release 2 1466 instruction set. 1467 1468config CPU_LOONGSON1C 1469 bool "Loongson 1C" 1470 depends on SYS_HAS_CPU_LOONGSON1C 1471 select CPU_LOONGSON32 1472 select LEDS_GPIO_REGISTER 1473 help 1474 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1475 Release 1 instruction set and part of the MIPS32 Release 2 1476 instruction set. 1477 1478config CPU_MIPS32_R1 1479 bool "MIPS32 Release 1" 1480 depends on SYS_HAS_CPU_MIPS32_R1 1481 select CPU_HAS_PREFETCH 1482 select CPU_SUPPORTS_32BIT_KERNEL 1483 select CPU_SUPPORTS_HIGHMEM 1484 help 1485 Choose this option to build a kernel for release 1 or later of the 1486 MIPS32 architecture. Most modern embedded systems with a 32-bit 1487 MIPS processor are based on a MIPS32 processor. If you know the 1488 specific type of processor in your system, choose those that one 1489 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1490 Release 2 of the MIPS32 architecture is available since several 1491 years so chances are you even have a MIPS32 Release 2 processor 1492 in which case you should choose CPU_MIPS32_R2 instead for better 1493 performance. 1494 1495config CPU_MIPS32_R2 1496 bool "MIPS32 Release 2" 1497 depends on SYS_HAS_CPU_MIPS32_R2 1498 select CPU_HAS_PREFETCH 1499 select CPU_SUPPORTS_32BIT_KERNEL 1500 select CPU_SUPPORTS_HIGHMEM 1501 select CPU_SUPPORTS_MSA 1502 select HAVE_KVM 1503 help 1504 Choose this option to build a kernel for release 2 or later of the 1505 MIPS32 architecture. Most modern embedded systems with a 32-bit 1506 MIPS processor are based on a MIPS32 processor. If you know the 1507 specific type of processor in your system, choose those that one 1508 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1509 1510config CPU_MIPS32_R5 1511 bool "MIPS32 Release 5" 1512 depends on SYS_HAS_CPU_MIPS32_R5 1513 select CPU_HAS_PREFETCH 1514 select CPU_SUPPORTS_32BIT_KERNEL 1515 select CPU_SUPPORTS_HIGHMEM 1516 select CPU_SUPPORTS_MSA 1517 select HAVE_KVM 1518 select MIPS_O32_FP64_SUPPORT 1519 help 1520 Choose this option to build a kernel for release 5 or later of the 1521 MIPS32 architecture. New MIPS processors, starting with the Warrior 1522 family, are based on a MIPS32r5 processor. If you own an older 1523 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1524 1525config CPU_MIPS32_R6 1526 bool "MIPS32 Release 6" 1527 depends on SYS_HAS_CPU_MIPS32_R6 1528 select CPU_HAS_PREFETCH 1529 select CPU_NO_LOAD_STORE_LR 1530 select CPU_SUPPORTS_32BIT_KERNEL 1531 select CPU_SUPPORTS_HIGHMEM 1532 select CPU_SUPPORTS_MSA 1533 select HAVE_KVM 1534 select MIPS_O32_FP64_SUPPORT 1535 help 1536 Choose this option to build a kernel for release 6 or later of the 1537 MIPS32 architecture. New MIPS processors, starting with the Warrior 1538 family, are based on a MIPS32r6 processor. If you own an older 1539 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1540 1541config CPU_MIPS64_R1 1542 bool "MIPS64 Release 1" 1543 depends on SYS_HAS_CPU_MIPS64_R1 1544 select CPU_HAS_PREFETCH 1545 select CPU_SUPPORTS_32BIT_KERNEL 1546 select CPU_SUPPORTS_64BIT_KERNEL 1547 select CPU_SUPPORTS_HIGHMEM 1548 select CPU_SUPPORTS_HUGEPAGES 1549 help 1550 Choose this option to build a kernel for release 1 or later of the 1551 MIPS64 architecture. Many modern embedded systems with a 64-bit 1552 MIPS processor are based on a MIPS64 processor. If you know the 1553 specific type of processor in your system, choose those that one 1554 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1555 Release 2 of the MIPS64 architecture is available since several 1556 years so chances are you even have a MIPS64 Release 2 processor 1557 in which case you should choose CPU_MIPS64_R2 instead for better 1558 performance. 1559 1560config CPU_MIPS64_R2 1561 bool "MIPS64 Release 2" 1562 depends on SYS_HAS_CPU_MIPS64_R2 1563 select CPU_HAS_PREFETCH 1564 select CPU_SUPPORTS_32BIT_KERNEL 1565 select CPU_SUPPORTS_64BIT_KERNEL 1566 select CPU_SUPPORTS_HIGHMEM 1567 select CPU_SUPPORTS_HUGEPAGES 1568 select CPU_SUPPORTS_MSA 1569 select HAVE_KVM 1570 help 1571 Choose this option to build a kernel for release 2 or later of the 1572 MIPS64 architecture. Many modern embedded systems with a 64-bit 1573 MIPS processor are based on a MIPS64 processor. If you know the 1574 specific type of processor in your system, choose those that one 1575 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1576 1577config CPU_MIPS64_R5 1578 bool "MIPS64 Release 5" 1579 depends on SYS_HAS_CPU_MIPS64_R5 1580 select CPU_HAS_PREFETCH 1581 select CPU_SUPPORTS_32BIT_KERNEL 1582 select CPU_SUPPORTS_64BIT_KERNEL 1583 select CPU_SUPPORTS_HIGHMEM 1584 select CPU_SUPPORTS_HUGEPAGES 1585 select CPU_SUPPORTS_MSA 1586 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1587 select HAVE_KVM 1588 help 1589 Choose this option to build a kernel for release 5 or later of the 1590 MIPS64 architecture. This is a intermediate MIPS architecture 1591 release partly implementing release 6 features. Though there is no 1592 any hardware known to be based on this release. 1593 1594config CPU_MIPS64_R6 1595 bool "MIPS64 Release 6" 1596 depends on SYS_HAS_CPU_MIPS64_R6 1597 select CPU_HAS_PREFETCH 1598 select CPU_NO_LOAD_STORE_LR 1599 select CPU_SUPPORTS_32BIT_KERNEL 1600 select CPU_SUPPORTS_64BIT_KERNEL 1601 select CPU_SUPPORTS_HIGHMEM 1602 select CPU_SUPPORTS_HUGEPAGES 1603 select CPU_SUPPORTS_MSA 1604 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1605 select HAVE_KVM 1606 help 1607 Choose this option to build a kernel for release 6 or later of the 1608 MIPS64 architecture. New MIPS processors, starting with the Warrior 1609 family, are based on a MIPS64r6 processor. If you own an older 1610 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1611 1612config CPU_P5600 1613 bool "MIPS Warrior P5600" 1614 depends on SYS_HAS_CPU_P5600 1615 select CPU_HAS_PREFETCH 1616 select CPU_SUPPORTS_32BIT_KERNEL 1617 select CPU_SUPPORTS_HIGHMEM 1618 select CPU_SUPPORTS_MSA 1619 select CPU_SUPPORTS_CPUFREQ 1620 select CPU_MIPSR2_IRQ_VI 1621 select CPU_MIPSR2_IRQ_EI 1622 select HAVE_KVM 1623 select MIPS_O32_FP64_SUPPORT 1624 help 1625 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1626 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1627 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1628 level features like up to six P5600 calculation cores, CM2 with L2 1629 cache, IOCU/IOMMU (though might be unused depending on the system- 1630 specific IP core configuration), GIC, CPC, virtualisation module, 1631 eJTAG and PDtrace. 1632 1633config CPU_R3000 1634 bool "R3000" 1635 depends on SYS_HAS_CPU_R3000 1636 select CPU_HAS_WB 1637 select CPU_R3K_TLB 1638 select CPU_SUPPORTS_32BIT_KERNEL 1639 select CPU_SUPPORTS_HIGHMEM 1640 help 1641 Please make sure to pick the right CPU type. Linux/MIPS is not 1642 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1643 *not* work on R4000 machines and vice versa. However, since most 1644 of the supported machines have an R4000 (or similar) CPU, R4x00 1645 might be a safe bet. If the resulting kernel does not work, 1646 try to recompile with R3000. 1647 1648config CPU_TX39XX 1649 bool "R39XX" 1650 depends on SYS_HAS_CPU_TX39XX 1651 select CPU_SUPPORTS_32BIT_KERNEL 1652 select CPU_R3K_TLB 1653 1654config CPU_VR41XX 1655 bool "R41xx" 1656 depends on SYS_HAS_CPU_VR41XX 1657 select CPU_SUPPORTS_32BIT_KERNEL 1658 select CPU_SUPPORTS_64BIT_KERNEL 1659 help 1660 The options selects support for the NEC VR4100 series of processors. 1661 Only choose this option if you have one of these processors as a 1662 kernel built with this option will not run on any other type of 1663 processor or vice versa. 1664 1665config CPU_R4300 1666 bool "R4300" 1667 depends on SYS_HAS_CPU_R4300 1668 select CPU_SUPPORTS_32BIT_KERNEL 1669 select CPU_SUPPORTS_64BIT_KERNEL 1670 select CPU_HAS_LOAD_STORE_LR 1671 help 1672 MIPS Technologies R4300-series processors. 1673 1674config CPU_R4X00 1675 bool "R4x00" 1676 depends on SYS_HAS_CPU_R4X00 1677 select CPU_SUPPORTS_32BIT_KERNEL 1678 select CPU_SUPPORTS_64BIT_KERNEL 1679 select CPU_SUPPORTS_HUGEPAGES 1680 help 1681 MIPS Technologies R4000-series processors other than 4300, including 1682 the R4000, R4400, R4600, and 4700. 1683 1684config CPU_TX49XX 1685 bool "R49XX" 1686 depends on SYS_HAS_CPU_TX49XX 1687 select CPU_HAS_PREFETCH 1688 select CPU_SUPPORTS_32BIT_KERNEL 1689 select CPU_SUPPORTS_64BIT_KERNEL 1690 select CPU_SUPPORTS_HUGEPAGES 1691 1692config CPU_R5000 1693 bool "R5000" 1694 depends on SYS_HAS_CPU_R5000 1695 select CPU_SUPPORTS_32BIT_KERNEL 1696 select CPU_SUPPORTS_64BIT_KERNEL 1697 select CPU_SUPPORTS_HUGEPAGES 1698 help 1699 MIPS Technologies R5000-series processors other than the Nevada. 1700 1701config CPU_R5500 1702 bool "R5500" 1703 depends on SYS_HAS_CPU_R5500 1704 select CPU_SUPPORTS_32BIT_KERNEL 1705 select CPU_SUPPORTS_64BIT_KERNEL 1706 select CPU_SUPPORTS_HUGEPAGES 1707 help 1708 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1709 instruction set. 1710 1711config CPU_NEVADA 1712 bool "RM52xx" 1713 depends on SYS_HAS_CPU_NEVADA 1714 select CPU_SUPPORTS_32BIT_KERNEL 1715 select CPU_SUPPORTS_64BIT_KERNEL 1716 select CPU_SUPPORTS_HUGEPAGES 1717 help 1718 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1719 1720config CPU_R10000 1721 bool "R10000" 1722 depends on SYS_HAS_CPU_R10000 1723 select CPU_HAS_PREFETCH 1724 select CPU_SUPPORTS_32BIT_KERNEL 1725 select CPU_SUPPORTS_64BIT_KERNEL 1726 select CPU_SUPPORTS_HIGHMEM 1727 select CPU_SUPPORTS_HUGEPAGES 1728 help 1729 MIPS Technologies R10000-series processors. 1730 1731config CPU_RM7000 1732 bool "RM7000" 1733 depends on SYS_HAS_CPU_RM7000 1734 select CPU_HAS_PREFETCH 1735 select CPU_SUPPORTS_32BIT_KERNEL 1736 select CPU_SUPPORTS_64BIT_KERNEL 1737 select CPU_SUPPORTS_HIGHMEM 1738 select CPU_SUPPORTS_HUGEPAGES 1739 1740config CPU_SB1 1741 bool "SB1" 1742 depends on SYS_HAS_CPU_SB1 1743 select CPU_SUPPORTS_32BIT_KERNEL 1744 select CPU_SUPPORTS_64BIT_KERNEL 1745 select CPU_SUPPORTS_HIGHMEM 1746 select CPU_SUPPORTS_HUGEPAGES 1747 select WEAK_ORDERING 1748 1749config CPU_CAVIUM_OCTEON 1750 bool "Cavium Octeon processor" 1751 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1752 select CPU_HAS_PREFETCH 1753 select CPU_SUPPORTS_64BIT_KERNEL 1754 select WEAK_ORDERING 1755 select CPU_SUPPORTS_HIGHMEM 1756 select CPU_SUPPORTS_HUGEPAGES 1757 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1758 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1759 select MIPS_L1_CACHE_SHIFT_7 1760 select HAVE_KVM 1761 help 1762 The Cavium Octeon processor is a highly integrated chip containing 1763 many ethernet hardware widgets for networking tasks. The processor 1764 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1765 Full details can be found at http://www.caviumnetworks.com. 1766 1767config CPU_BMIPS 1768 bool "Broadcom BMIPS" 1769 depends on SYS_HAS_CPU_BMIPS 1770 select CPU_MIPS32 1771 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1772 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1773 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1774 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1775 select CPU_SUPPORTS_32BIT_KERNEL 1776 select DMA_NONCOHERENT 1777 select IRQ_MIPS_CPU 1778 select SWAP_IO_SPACE 1779 select WEAK_ORDERING 1780 select CPU_SUPPORTS_HIGHMEM 1781 select CPU_HAS_PREFETCH 1782 select CPU_SUPPORTS_CPUFREQ 1783 select MIPS_EXTERNAL_TIMER 1784 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 1785 help 1786 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1787 1788config CPU_XLR 1789 bool "Netlogic XLR SoC" 1790 depends on SYS_HAS_CPU_XLR 1791 select CPU_SUPPORTS_32BIT_KERNEL 1792 select CPU_SUPPORTS_64BIT_KERNEL 1793 select CPU_SUPPORTS_HIGHMEM 1794 select CPU_SUPPORTS_HUGEPAGES 1795 select WEAK_ORDERING 1796 select WEAK_REORDERING_BEYOND_LLSC 1797 help 1798 Netlogic Microsystems XLR/XLS processors. 1799 1800config CPU_XLP 1801 bool "Netlogic XLP SoC" 1802 depends on SYS_HAS_CPU_XLP 1803 select CPU_SUPPORTS_32BIT_KERNEL 1804 select CPU_SUPPORTS_64BIT_KERNEL 1805 select CPU_SUPPORTS_HIGHMEM 1806 select WEAK_ORDERING 1807 select WEAK_REORDERING_BEYOND_LLSC 1808 select CPU_HAS_PREFETCH 1809 select CPU_MIPSR2 1810 select CPU_SUPPORTS_HUGEPAGES 1811 select MIPS_ASID_BITS_VARIABLE 1812 help 1813 Netlogic Microsystems XLP processors. 1814endchoice 1815 1816config CPU_MIPS32_3_5_FEATURES 1817 bool "MIPS32 Release 3.5 Features" 1818 depends on SYS_HAS_CPU_MIPS32_R3_5 1819 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1820 CPU_P5600 1821 help 1822 Choose this option to build a kernel for release 2 or later of the 1823 MIPS32 architecture including features from the 3.5 release such as 1824 support for Enhanced Virtual Addressing (EVA). 1825 1826config CPU_MIPS32_3_5_EVA 1827 bool "Enhanced Virtual Addressing (EVA)" 1828 depends on CPU_MIPS32_3_5_FEATURES 1829 select EVA 1830 default y 1831 help 1832 Choose this option if you want to enable the Enhanced Virtual 1833 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1834 One of its primary benefits is an increase in the maximum size 1835 of lowmem (up to 3GB). If unsure, say 'N' here. 1836 1837config CPU_MIPS32_R5_FEATURES 1838 bool "MIPS32 Release 5 Features" 1839 depends on SYS_HAS_CPU_MIPS32_R5 1840 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1841 help 1842 Choose this option to build a kernel for release 2 or later of the 1843 MIPS32 architecture including features from release 5 such as 1844 support for Extended Physical Addressing (XPA). 1845 1846config CPU_MIPS32_R5_XPA 1847 bool "Extended Physical Addressing (XPA)" 1848 depends on CPU_MIPS32_R5_FEATURES 1849 depends on !EVA 1850 depends on !PAGE_SIZE_4KB 1851 depends on SYS_SUPPORTS_HIGHMEM 1852 select XPA 1853 select HIGHMEM 1854 select PHYS_ADDR_T_64BIT 1855 default n 1856 help 1857 Choose this option if you want to enable the Extended Physical 1858 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1859 benefit is to increase physical addressing equal to or greater 1860 than 40 bits. Note that this has the side effect of turning on 1861 64-bit addressing which in turn makes the PTEs 64-bit in size. 1862 If unsure, say 'N' here. 1863 1864if CPU_LOONGSON2F 1865config CPU_NOP_WORKAROUNDS 1866 bool 1867 1868config CPU_JUMP_WORKAROUNDS 1869 bool 1870 1871config CPU_LOONGSON2F_WORKAROUNDS 1872 bool "Loongson 2F Workarounds" 1873 default y 1874 select CPU_NOP_WORKAROUNDS 1875 select CPU_JUMP_WORKAROUNDS 1876 help 1877 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1878 require workarounds. Without workarounds the system may hang 1879 unexpectedly. For more information please refer to the gas 1880 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1881 1882 Loongson 2F03 and later have fixed these issues and no workarounds 1883 are needed. The workarounds have no significant side effect on them 1884 but may decrease the performance of the system so this option should 1885 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1886 systems. 1887 1888 If unsure, please say Y. 1889endif # CPU_LOONGSON2F 1890 1891config SYS_SUPPORTS_ZBOOT 1892 bool 1893 select HAVE_KERNEL_GZIP 1894 select HAVE_KERNEL_BZIP2 1895 select HAVE_KERNEL_LZ4 1896 select HAVE_KERNEL_LZMA 1897 select HAVE_KERNEL_LZO 1898 select HAVE_KERNEL_XZ 1899 select HAVE_KERNEL_ZSTD 1900 1901config SYS_SUPPORTS_ZBOOT_UART16550 1902 bool 1903 select SYS_SUPPORTS_ZBOOT 1904 1905config SYS_SUPPORTS_ZBOOT_UART_PROM 1906 bool 1907 select SYS_SUPPORTS_ZBOOT 1908 1909config CPU_LOONGSON2EF 1910 bool 1911 select CPU_SUPPORTS_32BIT_KERNEL 1912 select CPU_SUPPORTS_64BIT_KERNEL 1913 select CPU_SUPPORTS_HIGHMEM 1914 select CPU_SUPPORTS_HUGEPAGES 1915 select ARCH_HAS_PHYS_TO_DMA 1916 1917config CPU_LOONGSON32 1918 bool 1919 select CPU_MIPS32 1920 select CPU_MIPSR2 1921 select CPU_HAS_PREFETCH 1922 select CPU_SUPPORTS_32BIT_KERNEL 1923 select CPU_SUPPORTS_HIGHMEM 1924 select CPU_SUPPORTS_CPUFREQ 1925 1926config CPU_BMIPS32_3300 1927 select SMP_UP if SMP 1928 bool 1929 1930config CPU_BMIPS4350 1931 bool 1932 select SYS_SUPPORTS_SMP 1933 select SYS_SUPPORTS_HOTPLUG_CPU 1934 1935config CPU_BMIPS4380 1936 bool 1937 select MIPS_L1_CACHE_SHIFT_6 1938 select SYS_SUPPORTS_SMP 1939 select SYS_SUPPORTS_HOTPLUG_CPU 1940 select CPU_HAS_RIXI 1941 1942config CPU_BMIPS5000 1943 bool 1944 select MIPS_CPU_SCACHE 1945 select MIPS_L1_CACHE_SHIFT_7 1946 select SYS_SUPPORTS_SMP 1947 select SYS_SUPPORTS_HOTPLUG_CPU 1948 select CPU_HAS_RIXI 1949 1950config SYS_HAS_CPU_LOONGSON64 1951 bool 1952 select CPU_SUPPORTS_CPUFREQ 1953 select CPU_HAS_RIXI 1954 1955config SYS_HAS_CPU_LOONGSON2E 1956 bool 1957 1958config SYS_HAS_CPU_LOONGSON2F 1959 bool 1960 select CPU_SUPPORTS_CPUFREQ 1961 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1962 1963config SYS_HAS_CPU_LOONGSON1B 1964 bool 1965 1966config SYS_HAS_CPU_LOONGSON1C 1967 bool 1968 1969config SYS_HAS_CPU_MIPS32_R1 1970 bool 1971 1972config SYS_HAS_CPU_MIPS32_R2 1973 bool 1974 1975config SYS_HAS_CPU_MIPS32_R3_5 1976 bool 1977 1978config SYS_HAS_CPU_MIPS32_R5 1979 bool 1980 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1981 1982config SYS_HAS_CPU_MIPS32_R6 1983 bool 1984 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1985 1986config SYS_HAS_CPU_MIPS64_R1 1987 bool 1988 1989config SYS_HAS_CPU_MIPS64_R2 1990 bool 1991 1992config SYS_HAS_CPU_MIPS64_R6 1993 bool 1994 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1995 1996config SYS_HAS_CPU_P5600 1997 bool 1998 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1999 2000config SYS_HAS_CPU_R3000 2001 bool 2002 2003config SYS_HAS_CPU_TX39XX 2004 bool 2005 2006config SYS_HAS_CPU_VR41XX 2007 bool 2008 2009config SYS_HAS_CPU_R4300 2010 bool 2011 2012config SYS_HAS_CPU_R4X00 2013 bool 2014 2015config SYS_HAS_CPU_TX49XX 2016 bool 2017 2018config SYS_HAS_CPU_R5000 2019 bool 2020 2021config SYS_HAS_CPU_R5500 2022 bool 2023 2024config SYS_HAS_CPU_NEVADA 2025 bool 2026 2027config SYS_HAS_CPU_R10000 2028 bool 2029 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2030 2031config SYS_HAS_CPU_RM7000 2032 bool 2033 2034config SYS_HAS_CPU_SB1 2035 bool 2036 2037config SYS_HAS_CPU_CAVIUM_OCTEON 2038 bool 2039 2040config SYS_HAS_CPU_BMIPS 2041 bool 2042 2043config SYS_HAS_CPU_BMIPS32_3300 2044 bool 2045 select SYS_HAS_CPU_BMIPS 2046 2047config SYS_HAS_CPU_BMIPS4350 2048 bool 2049 select SYS_HAS_CPU_BMIPS 2050 2051config SYS_HAS_CPU_BMIPS4380 2052 bool 2053 select SYS_HAS_CPU_BMIPS 2054 2055config SYS_HAS_CPU_BMIPS5000 2056 bool 2057 select SYS_HAS_CPU_BMIPS 2058 select ARCH_HAS_SYNC_DMA_FOR_CPU 2059 2060config SYS_HAS_CPU_XLR 2061 bool 2062 2063config SYS_HAS_CPU_XLP 2064 bool 2065 2066# 2067# CPU may reorder R->R, R->W, W->R, W->W 2068# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 2069# 2070config WEAK_ORDERING 2071 bool 2072 2073# 2074# CPU may reorder reads and writes beyond LL/SC 2075# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 2076# 2077config WEAK_REORDERING_BEYOND_LLSC 2078 bool 2079endmenu 2080 2081# 2082# These two indicate any level of the MIPS32 and MIPS64 architecture 2083# 2084config CPU_MIPS32 2085 bool 2086 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 2087 CPU_MIPS32_R6 || CPU_P5600 2088 2089config CPU_MIPS64 2090 bool 2091 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2092 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON 2093 2094# 2095# These indicate the revision of the architecture 2096# 2097config CPU_MIPSR1 2098 bool 2099 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2100 2101config CPU_MIPSR2 2102 bool 2103 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2104 select CPU_HAS_RIXI 2105 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2106 select MIPS_SPRAM 2107 2108config CPU_MIPSR5 2109 bool 2110 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2111 select CPU_HAS_RIXI 2112 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2113 select MIPS_SPRAM 2114 2115config CPU_MIPSR6 2116 bool 2117 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2118 select CPU_HAS_RIXI 2119 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2120 select HAVE_ARCH_BITREVERSE 2121 select MIPS_ASID_BITS_VARIABLE 2122 select MIPS_CRC_SUPPORT 2123 select MIPS_SPRAM 2124 2125config TARGET_ISA_REV 2126 int 2127 default 1 if CPU_MIPSR1 2128 default 2 if CPU_MIPSR2 2129 default 5 if CPU_MIPSR5 2130 default 6 if CPU_MIPSR6 2131 default 0 2132 help 2133 Reflects the ISA revision being targeted by the kernel build. This 2134 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2135 2136config EVA 2137 bool 2138 2139config XPA 2140 bool 2141 2142config SYS_SUPPORTS_32BIT_KERNEL 2143 bool 2144config SYS_SUPPORTS_64BIT_KERNEL 2145 bool 2146config CPU_SUPPORTS_32BIT_KERNEL 2147 bool 2148config CPU_SUPPORTS_64BIT_KERNEL 2149 bool 2150config CPU_SUPPORTS_CPUFREQ 2151 bool 2152config CPU_SUPPORTS_ADDRWINCFG 2153 bool 2154config CPU_SUPPORTS_HUGEPAGES 2155 bool 2156 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) 2157config MIPS_PGD_C0_CONTEXT 2158 bool 2159 depends on 64BIT 2160 default y if (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP 2161 2162# 2163# Set to y for ptrace access to watch registers. 2164# 2165config HARDWARE_WATCHPOINTS 2166 bool 2167 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2168 2169menu "Kernel type" 2170 2171choice 2172 prompt "Kernel code model" 2173 help 2174 You should only select this option if you have a workload that 2175 actually benefits from 64-bit processing or if your machine has 2176 large memory. You will only be presented a single option in this 2177 menu if your system does not support both 32-bit and 64-bit kernels. 2178 2179config 32BIT 2180 bool "32-bit kernel" 2181 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2182 select TRAD_SIGNALS 2183 help 2184 Select this option if you want to build a 32-bit kernel. 2185 2186config 64BIT 2187 bool "64-bit kernel" 2188 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2189 help 2190 Select this option if you want to build a 64-bit kernel. 2191 2192endchoice 2193 2194config MIPS_VA_BITS_48 2195 bool "48 bits virtual memory" 2196 depends on 64BIT 2197 help 2198 Support a maximum at least 48 bits of application virtual 2199 memory. Default is 40 bits or less, depending on the CPU. 2200 For page sizes 16k and above, this option results in a small 2201 memory overhead for page tables. For 4k page size, a fourth 2202 level of page tables is added which imposes both a memory 2203 overhead as well as slower TLB fault handling. 2204 2205 If unsure, say N. 2206 2207choice 2208 prompt "Kernel page size" 2209 default PAGE_SIZE_4KB 2210 2211config PAGE_SIZE_4KB 2212 bool "4kB" 2213 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2214 help 2215 This option select the standard 4kB Linux page size. On some 2216 R3000-family processors this is the only available page size. Using 2217 4kB page size will minimize memory consumption and is therefore 2218 recommended for low memory systems. 2219 2220config PAGE_SIZE_8KB 2221 bool "8kB" 2222 depends on CPU_CAVIUM_OCTEON 2223 depends on !MIPS_VA_BITS_48 2224 help 2225 Using 8kB page size will result in higher performance kernel at 2226 the price of higher memory consumption. This option is available 2227 only on cnMIPS processors. Note that you will need a suitable Linux 2228 distribution to support this. 2229 2230config PAGE_SIZE_16KB 2231 bool "16kB" 2232 depends on !CPU_R3000 && !CPU_TX39XX 2233 help 2234 Using 16kB page size will result in higher performance kernel at 2235 the price of higher memory consumption. This option is available on 2236 all non-R3000 family processors. Note that you will need a suitable 2237 Linux distribution to support this. 2238 2239config PAGE_SIZE_32KB 2240 bool "32kB" 2241 depends on CPU_CAVIUM_OCTEON 2242 depends on !MIPS_VA_BITS_48 2243 help 2244 Using 32kB page size will result in higher performance kernel at 2245 the price of higher memory consumption. This option is available 2246 only on cnMIPS cores. Note that you will need a suitable Linux 2247 distribution to support this. 2248 2249config PAGE_SIZE_64KB 2250 bool "64kB" 2251 depends on !CPU_R3000 && !CPU_TX39XX 2252 help 2253 Using 64kB page size will result in higher performance kernel at 2254 the price of higher memory consumption. This option is available on 2255 all non-R3000 family processor. Not that at the time of this 2256 writing this option is still high experimental. 2257 2258endchoice 2259 2260config FORCE_MAX_ZONEORDER 2261 int "Maximum zone order" 2262 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2263 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2264 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2265 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2266 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2267 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2268 range 0 64 2269 default "11" 2270 help 2271 The kernel memory allocator divides physically contiguous memory 2272 blocks into "zones", where each zone is a power of two number of 2273 pages. This option selects the largest power of two that the kernel 2274 keeps in the memory allocator. If you need to allocate very large 2275 blocks of physically contiguous memory, then you may need to 2276 increase this value. 2277 2278 This config option is actually maximum order plus one. For example, 2279 a value of 11 means that the largest free memory block is 2^10 pages. 2280 2281 The page size is not necessarily 4KB. Keep this in mind 2282 when choosing a value for this option. 2283 2284config BOARD_SCACHE 2285 bool 2286 2287config IP22_CPU_SCACHE 2288 bool 2289 select BOARD_SCACHE 2290 2291# 2292# Support for a MIPS32 / MIPS64 style S-caches 2293# 2294config MIPS_CPU_SCACHE 2295 bool 2296 select BOARD_SCACHE 2297 2298config R5000_CPU_SCACHE 2299 bool 2300 select BOARD_SCACHE 2301 2302config RM7000_CPU_SCACHE 2303 bool 2304 select BOARD_SCACHE 2305 2306config SIBYTE_DMA_PAGEOPS 2307 bool "Use DMA to clear/copy pages" 2308 depends on CPU_SB1 2309 help 2310 Instead of using the CPU to zero and copy pages, use a Data Mover 2311 channel. These DMA channels are otherwise unused by the standard 2312 SiByte Linux port. Seems to give a small performance benefit. 2313 2314config CPU_HAS_PREFETCH 2315 bool 2316 2317config CPU_GENERIC_DUMP_TLB 2318 bool 2319 default y if !(CPU_R3000 || CPU_TX39XX) 2320 2321config MIPS_FP_SUPPORT 2322 bool "Floating Point support" if EXPERT 2323 default y 2324 help 2325 Select y to include support for floating point in the kernel 2326 including initialization of FPU hardware, FP context save & restore 2327 and emulation of an FPU where necessary. Without this support any 2328 userland program attempting to use floating point instructions will 2329 receive a SIGILL. 2330 2331 If you know that your userland will not attempt to use floating point 2332 instructions then you can say n here to shrink the kernel a little. 2333 2334 If unsure, say y. 2335 2336config CPU_R2300_FPU 2337 bool 2338 depends on MIPS_FP_SUPPORT 2339 default y if CPU_R3000 || CPU_TX39XX 2340 2341config CPU_R3K_TLB 2342 bool 2343 2344config CPU_R4K_FPU 2345 bool 2346 depends on MIPS_FP_SUPPORT 2347 default y if !CPU_R2300_FPU 2348 2349config CPU_R4K_CACHE_TLB 2350 bool 2351 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2352 2353config MIPS_MT_SMP 2354 bool "MIPS MT SMP support (1 TC on each available VPE)" 2355 default y 2356 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2357 select CPU_MIPSR2_IRQ_VI 2358 select CPU_MIPSR2_IRQ_EI 2359 select SYNC_R4K 2360 select MIPS_MT 2361 select SMP 2362 select SMP_UP 2363 select SYS_SUPPORTS_SMP 2364 select SYS_SUPPORTS_SCHED_SMT 2365 select MIPS_PERF_SHARED_TC_COUNTERS 2366 help 2367 This is a kernel model which is known as SMVP. This is supported 2368 on cores with the MT ASE and uses the available VPEs to implement 2369 virtual processors which supports SMP. This is equivalent to the 2370 Intel Hyperthreading feature. For further information go to 2371 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2372 2373config MIPS_MT 2374 bool 2375 2376config SCHED_SMT 2377 bool "SMT (multithreading) scheduler support" 2378 depends on SYS_SUPPORTS_SCHED_SMT 2379 default n 2380 help 2381 SMT scheduler support improves the CPU scheduler's decision making 2382 when dealing with MIPS MT enabled cores at a cost of slightly 2383 increased overhead in some places. If unsure say N here. 2384 2385config SYS_SUPPORTS_SCHED_SMT 2386 bool 2387 2388config SYS_SUPPORTS_MULTITHREADING 2389 bool 2390 2391config MIPS_MT_FPAFF 2392 bool "Dynamic FPU affinity for FP-intensive threads" 2393 default y 2394 depends on MIPS_MT_SMP 2395 2396config MIPSR2_TO_R6_EMULATOR 2397 bool "MIPS R2-to-R6 emulator" 2398 depends on CPU_MIPSR6 2399 depends on MIPS_FP_SUPPORT 2400 default y 2401 help 2402 Choose this option if you want to run non-R6 MIPS userland code. 2403 Even if you say 'Y' here, the emulator will still be disabled by 2404 default. You can enable it using the 'mipsr2emu' kernel option. 2405 The only reason this is a build-time option is to save ~14K from the 2406 final kernel image. 2407 2408config SYS_SUPPORTS_VPE_LOADER 2409 bool 2410 depends on SYS_SUPPORTS_MULTITHREADING 2411 help 2412 Indicates that the platform supports the VPE loader, and provides 2413 physical_memsize. 2414 2415config MIPS_VPE_LOADER 2416 bool "VPE loader support." 2417 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2418 select CPU_MIPSR2_IRQ_VI 2419 select CPU_MIPSR2_IRQ_EI 2420 select MIPS_MT 2421 help 2422 Includes a loader for loading an elf relocatable object 2423 onto another VPE and running it. 2424 2425config MIPS_VPE_LOADER_CMP 2426 bool 2427 default "y" 2428 depends on MIPS_VPE_LOADER && MIPS_CMP 2429 2430config MIPS_VPE_LOADER_MT 2431 bool 2432 default "y" 2433 depends on MIPS_VPE_LOADER && !MIPS_CMP 2434 2435config MIPS_VPE_LOADER_TOM 2436 bool "Load VPE program into memory hidden from linux" 2437 depends on MIPS_VPE_LOADER 2438 default y 2439 help 2440 The loader can use memory that is present but has been hidden from 2441 Linux using the kernel command line option "mem=xxMB". It's up to 2442 you to ensure the amount you put in the option and the space your 2443 program requires is less or equal to the amount physically present. 2444 2445config MIPS_VPE_APSP_API 2446 bool "Enable support for AP/SP API (RTLX)" 2447 depends on MIPS_VPE_LOADER 2448 2449config MIPS_VPE_APSP_API_CMP 2450 bool 2451 default "y" 2452 depends on MIPS_VPE_APSP_API && MIPS_CMP 2453 2454config MIPS_VPE_APSP_API_MT 2455 bool 2456 default "y" 2457 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2458 2459config MIPS_CMP 2460 bool "MIPS CMP framework support (DEPRECATED)" 2461 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2462 select SMP 2463 select SYNC_R4K 2464 select SYS_SUPPORTS_SMP 2465 select WEAK_ORDERING 2466 default n 2467 help 2468 Select this if you are using a bootloader which implements the "CMP 2469 framework" protocol (ie. YAMON) and want your kernel to make use of 2470 its ability to start secondary CPUs. 2471 2472 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2473 instead of this. 2474 2475config MIPS_CPS 2476 bool "MIPS Coherent Processing System support" 2477 depends on SYS_SUPPORTS_MIPS_CPS 2478 select MIPS_CM 2479 select MIPS_CPS_PM if HOTPLUG_CPU 2480 select SMP 2481 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2482 select SYS_SUPPORTS_HOTPLUG_CPU 2483 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2484 select SYS_SUPPORTS_SMP 2485 select WEAK_ORDERING 2486 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 2487 help 2488 Select this if you wish to run an SMP kernel across multiple cores 2489 within a MIPS Coherent Processing System. When this option is 2490 enabled the kernel will probe for other cores and boot them with 2491 no external assistance. It is safe to enable this when hardware 2492 support is unavailable. 2493 2494config MIPS_CPS_PM 2495 depends on MIPS_CPS 2496 bool 2497 2498config MIPS_CM 2499 bool 2500 select MIPS_CPC 2501 2502config MIPS_CPC 2503 bool 2504 2505config SB1_PASS_2_WORKAROUNDS 2506 bool 2507 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2508 default y 2509 2510config SB1_PASS_2_1_WORKAROUNDS 2511 bool 2512 depends on CPU_SB1 && CPU_SB1_PASS_2 2513 default y 2514 2515choice 2516 prompt "SmartMIPS or microMIPS ASE support" 2517 2518config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2519 bool "None" 2520 help 2521 Select this if you want neither microMIPS nor SmartMIPS support 2522 2523config CPU_HAS_SMARTMIPS 2524 depends on SYS_SUPPORTS_SMARTMIPS 2525 bool "SmartMIPS" 2526 help 2527 SmartMIPS is a extension of the MIPS32 architecture aimed at 2528 increased security at both hardware and software level for 2529 smartcards. Enabling this option will allow proper use of the 2530 SmartMIPS instructions by Linux applications. However a kernel with 2531 this option will not work on a MIPS core without SmartMIPS core. If 2532 you don't know you probably don't have SmartMIPS and should say N 2533 here. 2534 2535config CPU_MICROMIPS 2536 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2537 bool "microMIPS" 2538 help 2539 When this option is enabled the kernel will be built using the 2540 microMIPS ISA 2541 2542endchoice 2543 2544config CPU_HAS_MSA 2545 bool "Support for the MIPS SIMD Architecture" 2546 depends on CPU_SUPPORTS_MSA 2547 depends on MIPS_FP_SUPPORT 2548 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2549 help 2550 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2551 and a set of SIMD instructions to operate on them. When this option 2552 is enabled the kernel will support allocating & switching MSA 2553 vector register contexts. If you know that your kernel will only be 2554 running on CPUs which do not support MSA or that your userland will 2555 not be making use of it then you may wish to say N here to reduce 2556 the size & complexity of your kernel. 2557 2558 If unsure, say Y. 2559 2560config CPU_HAS_WB 2561 bool 2562 2563config XKS01 2564 bool 2565 2566config CPU_HAS_DIEI 2567 depends on !CPU_DIEI_BROKEN 2568 bool 2569 2570config CPU_DIEI_BROKEN 2571 bool 2572 2573config CPU_HAS_RIXI 2574 bool 2575 2576config CPU_NO_LOAD_STORE_LR 2577 bool 2578 help 2579 CPU lacks support for unaligned load and store instructions: 2580 LWL, LWR, SWL, SWR (Load/store word left/right). 2581 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2582 systems). 2583 2584# 2585# Vectored interrupt mode is an R2 feature 2586# 2587config CPU_MIPSR2_IRQ_VI 2588 bool 2589 2590# 2591# Extended interrupt mode is an R2 feature 2592# 2593config CPU_MIPSR2_IRQ_EI 2594 bool 2595 2596config CPU_HAS_SYNC 2597 bool 2598 depends on !CPU_R3000 2599 default y 2600 2601# 2602# CPU non-features 2603# 2604config CPU_DADDI_WORKAROUNDS 2605 bool 2606 2607config CPU_R4000_WORKAROUNDS 2608 bool 2609 select CPU_R4400_WORKAROUNDS 2610 2611config CPU_R4400_WORKAROUNDS 2612 bool 2613 2614config CPU_R4X00_BUGS64 2615 bool 2616 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2617 2618config MIPS_ASID_SHIFT 2619 int 2620 default 6 if CPU_R3000 || CPU_TX39XX 2621 default 0 2622 2623config MIPS_ASID_BITS 2624 int 2625 default 0 if MIPS_ASID_BITS_VARIABLE 2626 default 6 if CPU_R3000 || CPU_TX39XX 2627 default 8 2628 2629config MIPS_ASID_BITS_VARIABLE 2630 bool 2631 2632config MIPS_CRC_SUPPORT 2633 bool 2634 2635# R4600 erratum. Due to the lack of errata information the exact 2636# technical details aren't known. I've experimentally found that disabling 2637# interrupts during indexed I-cache flushes seems to be sufficient to deal 2638# with the issue. 2639config WAR_R4600_V1_INDEX_ICACHEOP 2640 bool 2641 2642# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2643# 2644# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2645# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2646# executed if there is no other dcache activity. If the dcache is 2647# accessed for another instruction immediately preceding when these 2648# cache instructions are executing, it is possible that the dcache 2649# tag match outputs used by these cache instructions will be 2650# incorrect. These cache instructions should be preceded by at least 2651# four instructions that are not any kind of load or store 2652# instruction. 2653# 2654# This is not allowed: lw 2655# nop 2656# nop 2657# nop 2658# cache Hit_Writeback_Invalidate_D 2659# 2660# This is allowed: lw 2661# nop 2662# nop 2663# nop 2664# nop 2665# cache Hit_Writeback_Invalidate_D 2666config WAR_R4600_V1_HIT_CACHEOP 2667 bool 2668 2669# Writeback and invalidate the primary cache dcache before DMA. 2670# 2671# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2672# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2673# operate correctly if the internal data cache refill buffer is empty. These 2674# CACHE instructions should be separated from any potential data cache miss 2675# by a load instruction to an uncached address to empty the response buffer." 2676# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2677# in .pdf format.) 2678config WAR_R4600_V2_HIT_CACHEOP 2679 bool 2680 2681# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2682# the line which this instruction itself exists, the following 2683# operation is not guaranteed." 2684# 2685# Workaround: do two phase flushing for Index_Invalidate_I 2686config WAR_TX49XX_ICACHE_INDEX_INV 2687 bool 2688 2689# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2690# opposes it being called that) where invalid instructions in the same 2691# I-cache line worth of instructions being fetched may case spurious 2692# exceptions. 2693config WAR_ICACHE_REFILLS 2694 bool 2695 2696# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2697# may cause ll / sc and lld / scd sequences to execute non-atomically. 2698config WAR_R10000_LLSC 2699 bool 2700 2701# 34K core erratum: "Problems Executing the TLBR Instruction" 2702config WAR_MIPS34K_MISSED_ITLB 2703 bool 2704 2705# 2706# - Highmem only makes sense for the 32-bit kernel. 2707# - The current highmem code will only work properly on physically indexed 2708# caches such as R3000, SB1, R7000 or those that look like they're virtually 2709# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2710# moment we protect the user and offer the highmem option only on machines 2711# where it's known to be safe. This will not offer highmem on a few systems 2712# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2713# indexed CPUs but we're playing safe. 2714# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2715# know they might have memory configurations that could make use of highmem 2716# support. 2717# 2718config HIGHMEM 2719 bool "High Memory Support" 2720 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2721 select KMAP_LOCAL 2722 2723config CPU_SUPPORTS_HIGHMEM 2724 bool 2725 2726config SYS_SUPPORTS_HIGHMEM 2727 bool 2728 2729config SYS_SUPPORTS_SMARTMIPS 2730 bool 2731 2732config SYS_SUPPORTS_MICROMIPS 2733 bool 2734 2735config SYS_SUPPORTS_MIPS16 2736 bool 2737 help 2738 This option must be set if a kernel might be executed on a MIPS16- 2739 enabled CPU even if MIPS16 is not actually being used. In other 2740 words, it makes the kernel MIPS16-tolerant. 2741 2742config CPU_SUPPORTS_MSA 2743 bool 2744 2745config ARCH_FLATMEM_ENABLE 2746 def_bool y 2747 depends on !NUMA && !CPU_LOONGSON2EF 2748 2749config ARCH_SPARSEMEM_ENABLE 2750 bool 2751 select SPARSEMEM_STATIC if !SGI_IP27 2752 2753config NUMA 2754 bool "NUMA Support" 2755 depends on SYS_SUPPORTS_NUMA 2756 select SMP 2757 help 2758 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2759 Access). This option improves performance on systems with more 2760 than two nodes; on two node systems it is generally better to 2761 leave it disabled; on single node systems leave this option 2762 disabled. 2763 2764config SYS_SUPPORTS_NUMA 2765 bool 2766 2767config HAVE_SETUP_PER_CPU_AREA 2768 def_bool y 2769 depends on NUMA 2770 2771config NEED_PER_CPU_EMBED_FIRST_CHUNK 2772 def_bool y 2773 depends on NUMA 2774 2775config RELOCATABLE 2776 bool "Relocatable kernel" 2777 depends on SYS_SUPPORTS_RELOCATABLE 2778 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2779 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2780 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2781 CPU_P5600 || CAVIUM_OCTEON_SOC || \ 2782 CPU_LOONGSON64 2783 help 2784 This builds a kernel image that retains relocation information 2785 so it can be loaded someplace besides the default 1MB. 2786 The relocations make the kernel binary about 15% larger, 2787 but are discarded at runtime 2788 2789config RELOCATION_TABLE_SIZE 2790 hex "Relocation table size" 2791 depends on RELOCATABLE 2792 range 0x0 0x01000000 2793 default "0x00200000" if CPU_LOONGSON64 2794 default "0x00100000" 2795 help 2796 A table of relocation data will be appended to the kernel binary 2797 and parsed at boot to fix up the relocated kernel. 2798 2799 This option allows the amount of space reserved for the table to be 2800 adjusted, although the default of 1Mb should be ok in most cases. 2801 2802 The build will fail and a valid size suggested if this is too small. 2803 2804 If unsure, leave at the default value. 2805 2806config RANDOMIZE_BASE 2807 bool "Randomize the address of the kernel image" 2808 depends on RELOCATABLE 2809 help 2810 Randomizes the physical and virtual address at which the 2811 kernel image is loaded, as a security feature that 2812 deters exploit attempts relying on knowledge of the location 2813 of kernel internals. 2814 2815 Entropy is generated using any coprocessor 0 registers available. 2816 2817 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2818 2819 If unsure, say N. 2820 2821config RANDOMIZE_BASE_MAX_OFFSET 2822 hex "Maximum kASLR offset" if EXPERT 2823 depends on RANDOMIZE_BASE 2824 range 0x0 0x40000000 if EVA || 64BIT 2825 range 0x0 0x08000000 2826 default "0x01000000" 2827 help 2828 When kASLR is active, this provides the maximum offset that will 2829 be applied to the kernel image. It should be set according to the 2830 amount of physical RAM available in the target system minus 2831 PHYSICAL_START and must be a power of 2. 2832 2833 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2834 EVA or 64-bit. The default is 16Mb. 2835 2836config NODES_SHIFT 2837 int 2838 default "6" 2839 depends on NUMA 2840 2841config HW_PERF_EVENTS 2842 bool "Enable hardware performance counter support for perf events" 2843 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64) 2844 default y 2845 help 2846 Enable hardware performance counter support for perf events. If 2847 disabled, perf events will use software events only. 2848 2849config DMI 2850 bool "Enable DMI scanning" 2851 depends on MACH_LOONGSON64 2852 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2853 default y 2854 help 2855 Enabled scanning of DMI to identify machine quirks. Say Y 2856 here unless you have verified that your setup is not 2857 affected by entries in the DMI blacklist. Required by PNP 2858 BIOS code. 2859 2860config SMP 2861 bool "Multi-Processing support" 2862 depends on SYS_SUPPORTS_SMP 2863 help 2864 This enables support for systems with more than one CPU. If you have 2865 a system with only one CPU, say N. If you have a system with more 2866 than one CPU, say Y. 2867 2868 If you say N here, the kernel will run on uni- and multiprocessor 2869 machines, but will use only one CPU of a multiprocessor machine. If 2870 you say Y here, the kernel will run on many, but not all, 2871 uniprocessor machines. On a uniprocessor machine, the kernel 2872 will run faster if you say N here. 2873 2874 People using multiprocessor machines who say Y here should also say 2875 Y to "Enhanced Real Time Clock Support", below. 2876 2877 See also the SMP-HOWTO available at 2878 <https://www.tldp.org/docs.html#howto>. 2879 2880 If you don't know what to do here, say N. 2881 2882config HOTPLUG_CPU 2883 bool "Support for hot-pluggable CPUs" 2884 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2885 help 2886 Say Y here to allow turning CPUs off and on. CPUs can be 2887 controlled through /sys/devices/system/cpu. 2888 (Note: power management support will enable this option 2889 automatically on SMP systems. ) 2890 Say N if you want to disable CPU hotplug. 2891 2892config SMP_UP 2893 bool 2894 2895config SYS_SUPPORTS_MIPS_CMP 2896 bool 2897 2898config SYS_SUPPORTS_MIPS_CPS 2899 bool 2900 2901config SYS_SUPPORTS_SMP 2902 bool 2903 2904config NR_CPUS_DEFAULT_4 2905 bool 2906 2907config NR_CPUS_DEFAULT_8 2908 bool 2909 2910config NR_CPUS_DEFAULT_16 2911 bool 2912 2913config NR_CPUS_DEFAULT_32 2914 bool 2915 2916config NR_CPUS_DEFAULT_64 2917 bool 2918 2919config NR_CPUS 2920 int "Maximum number of CPUs (2-256)" 2921 range 2 256 2922 depends on SMP 2923 default "4" if NR_CPUS_DEFAULT_4 2924 default "8" if NR_CPUS_DEFAULT_8 2925 default "16" if NR_CPUS_DEFAULT_16 2926 default "32" if NR_CPUS_DEFAULT_32 2927 default "64" if NR_CPUS_DEFAULT_64 2928 help 2929 This allows you to specify the maximum number of CPUs which this 2930 kernel will support. The maximum supported value is 32 for 32-bit 2931 kernel and 64 for 64-bit kernels; the minimum value which makes 2932 sense is 1 for Qemu (useful only for kernel debugging purposes) 2933 and 2 for all others. 2934 2935 This is purely to save memory - each supported CPU adds 2936 approximately eight kilobytes to the kernel image. For best 2937 performance should round up your number of processors to the next 2938 power of two. 2939 2940config MIPS_PERF_SHARED_TC_COUNTERS 2941 bool 2942 2943config MIPS_NR_CPU_NR_MAP_1024 2944 bool 2945 2946config MIPS_NR_CPU_NR_MAP 2947 int 2948 depends on SMP 2949 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2950 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2951 2952# 2953# Timer Interrupt Frequency Configuration 2954# 2955 2956choice 2957 prompt "Timer frequency" 2958 default HZ_250 2959 help 2960 Allows the configuration of the timer frequency. 2961 2962 config HZ_24 2963 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2964 2965 config HZ_48 2966 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 2967 2968 config HZ_100 2969 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 2970 2971 config HZ_128 2972 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 2973 2974 config HZ_250 2975 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 2976 2977 config HZ_256 2978 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 2979 2980 config HZ_1000 2981 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 2982 2983 config HZ_1024 2984 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 2985 2986endchoice 2987 2988config SYS_SUPPORTS_24HZ 2989 bool 2990 2991config SYS_SUPPORTS_48HZ 2992 bool 2993 2994config SYS_SUPPORTS_100HZ 2995 bool 2996 2997config SYS_SUPPORTS_128HZ 2998 bool 2999 3000config SYS_SUPPORTS_250HZ 3001 bool 3002 3003config SYS_SUPPORTS_256HZ 3004 bool 3005 3006config SYS_SUPPORTS_1000HZ 3007 bool 3008 3009config SYS_SUPPORTS_1024HZ 3010 bool 3011 3012config SYS_SUPPORTS_ARBIT_HZ 3013 bool 3014 default y if !SYS_SUPPORTS_24HZ && \ 3015 !SYS_SUPPORTS_48HZ && \ 3016 !SYS_SUPPORTS_100HZ && \ 3017 !SYS_SUPPORTS_128HZ && \ 3018 !SYS_SUPPORTS_250HZ && \ 3019 !SYS_SUPPORTS_256HZ && \ 3020 !SYS_SUPPORTS_1000HZ && \ 3021 !SYS_SUPPORTS_1024HZ 3022 3023config HZ 3024 int 3025 default 24 if HZ_24 3026 default 48 if HZ_48 3027 default 100 if HZ_100 3028 default 128 if HZ_128 3029 default 250 if HZ_250 3030 default 256 if HZ_256 3031 default 1000 if HZ_1000 3032 default 1024 if HZ_1024 3033 3034config SCHED_HRTICK 3035 def_bool HIGH_RES_TIMERS 3036 3037config KEXEC 3038 bool "Kexec system call" 3039 select KEXEC_CORE 3040 help 3041 kexec is a system call that implements the ability to shutdown your 3042 current kernel, and to start another kernel. It is like a reboot 3043 but it is independent of the system firmware. And like a reboot 3044 you can start any kernel with it, not just Linux. 3045 3046 The name comes from the similarity to the exec system call. 3047 3048 It is an ongoing process to be certain the hardware in a machine 3049 is properly shutdown, so do not be surprised if this code does not 3050 initially work for you. As of this writing the exact hardware 3051 interface is strongly in flux, so no good recommendation can be 3052 made. 3053 3054config CRASH_DUMP 3055 bool "Kernel crash dumps" 3056 help 3057 Generate crash dump after being started by kexec. 3058 This should be normally only set in special crash dump kernels 3059 which are loaded in the main kernel with kexec-tools into 3060 a specially reserved region and then later executed after 3061 a crash by kdump/kexec. The crash dump kernel must be compiled 3062 to a memory address not used by the main kernel or firmware using 3063 PHYSICAL_START. 3064 3065config PHYSICAL_START 3066 hex "Physical address where the kernel is loaded" 3067 default "0xffffffff84000000" 3068 depends on CRASH_DUMP 3069 help 3070 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 3071 If you plan to use kernel for capturing the crash dump change 3072 this value to start of the reserved region (the "X" value as 3073 specified in the "crashkernel=YM@XM" command line boot parameter 3074 passed to the panic-ed kernel). 3075 3076config MIPS_O32_FP64_SUPPORT 3077 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 3078 depends on 32BIT || MIPS32_O32 3079 help 3080 When this is enabled, the kernel will support use of 64-bit floating 3081 point registers with binaries using the O32 ABI along with the 3082 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 3083 32-bit MIPS systems this support is at the cost of increasing the 3084 size and complexity of the compiled FPU emulator. Thus if you are 3085 running a MIPS32 system and know that none of your userland binaries 3086 will require 64-bit floating point, you may wish to reduce the size 3087 of your kernel & potentially improve FP emulation performance by 3088 saying N here. 3089 3090 Although binutils currently supports use of this flag the details 3091 concerning its effect upon the O32 ABI in userland are still being 3092 worked on. In order to avoid userland becoming dependent upon current 3093 behaviour before the details have been finalised, this option should 3094 be considered experimental and only enabled by those working upon 3095 said details. 3096 3097 If unsure, say N. 3098 3099config USE_OF 3100 bool 3101 select OF 3102 select OF_EARLY_FLATTREE 3103 select IRQ_DOMAIN 3104 3105config UHI_BOOT 3106 bool 3107 3108config BUILTIN_DTB 3109 bool 3110 3111choice 3112 prompt "Kernel appended dtb support" if USE_OF 3113 default MIPS_NO_APPENDED_DTB 3114 3115 config MIPS_NO_APPENDED_DTB 3116 bool "None" 3117 help 3118 Do not enable appended dtb support. 3119 3120 config MIPS_ELF_APPENDED_DTB 3121 bool "vmlinux" 3122 help 3123 With this option, the boot code will look for a device tree binary 3124 DTB) included in the vmlinux ELF section .appended_dtb. By default 3125 it is empty and the DTB can be appended using binutils command 3126 objcopy: 3127 3128 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3129 3130 This is meant as a backward compatibility convenience for those 3131 systems with a bootloader that can't be upgraded to accommodate 3132 the documented boot protocol using a device tree. 3133 3134 config MIPS_RAW_APPENDED_DTB 3135 bool "vmlinux.bin or vmlinuz.bin" 3136 help 3137 With this option, the boot code will look for a device tree binary 3138 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3139 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3140 3141 This is meant as a backward compatibility convenience for those 3142 systems with a bootloader that can't be upgraded to accommodate 3143 the documented boot protocol using a device tree. 3144 3145 Beware that there is very little in terms of protection against 3146 this option being confused by leftover garbage in memory that might 3147 look like a DTB header after a reboot if no actual DTB is appended 3148 to vmlinux.bin. Do not leave this option active in a production kernel 3149 if you don't intend to always append a DTB. 3150endchoice 3151 3152choice 3153 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3154 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3155 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3156 !CAVIUM_OCTEON_SOC 3157 default MIPS_CMDLINE_FROM_BOOTLOADER 3158 3159 config MIPS_CMDLINE_FROM_DTB 3160 depends on USE_OF 3161 bool "Dtb kernel arguments if available" 3162 3163 config MIPS_CMDLINE_DTB_EXTEND 3164 depends on USE_OF 3165 bool "Extend dtb kernel arguments with bootloader arguments" 3166 3167 config MIPS_CMDLINE_FROM_BOOTLOADER 3168 bool "Bootloader kernel arguments if available" 3169 3170 config MIPS_CMDLINE_BUILTIN_EXTEND 3171 depends on CMDLINE_BOOL 3172 bool "Extend builtin kernel arguments with bootloader arguments" 3173endchoice 3174 3175endmenu 3176 3177config LOCKDEP_SUPPORT 3178 bool 3179 default y 3180 3181config STACKTRACE_SUPPORT 3182 bool 3183 default y 3184 3185config PGTABLE_LEVELS 3186 int 3187 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3188 default 3 if 64BIT && !PAGE_SIZE_64KB 3189 default 2 3190 3191config MIPS_AUTO_PFN_OFFSET 3192 bool 3193 3194menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3195 3196config PCI_DRIVERS_GENERIC 3197 select PCI_DOMAINS_GENERIC if PCI 3198 bool 3199 3200config PCI_DRIVERS_LEGACY 3201 def_bool !PCI_DRIVERS_GENERIC 3202 select NO_GENERIC_PCI_IOPORT_MAP 3203 select PCI_DOMAINS if PCI 3204 3205# 3206# ISA support is now enabled via select. Too many systems still have the one 3207# or other ISA chip on the board that users don't know about so don't expect 3208# users to choose the right thing ... 3209# 3210config ISA 3211 bool 3212 3213config TC 3214 bool "TURBOchannel support" 3215 depends on MACH_DECSTATION 3216 help 3217 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3218 processors. TURBOchannel programming specifications are available 3219 at: 3220 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3221 and: 3222 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3223 Linux driver support status is documented at: 3224 <http://www.linux-mips.org/wiki/DECstation> 3225 3226config MMU 3227 bool 3228 default y 3229 3230config ARCH_MMAP_RND_BITS_MIN 3231 default 12 if 64BIT 3232 default 8 3233 3234config ARCH_MMAP_RND_BITS_MAX 3235 default 18 if 64BIT 3236 default 15 3237 3238config ARCH_MMAP_RND_COMPAT_BITS_MIN 3239 default 8 3240 3241config ARCH_MMAP_RND_COMPAT_BITS_MAX 3242 default 15 3243 3244config I8253 3245 bool 3246 select CLKSRC_I8253 3247 select CLKEVT_I8253 3248 select MIPS_EXTERNAL_TIMER 3249endmenu 3250 3251config TRAD_SIGNALS 3252 bool 3253 3254config MIPS32_COMPAT 3255 bool 3256 3257config COMPAT 3258 bool 3259 3260config SYSVIPC_COMPAT 3261 bool 3262 3263config MIPS32_O32 3264 bool "Kernel support for o32 binaries" 3265 depends on 64BIT 3266 select ARCH_WANT_OLD_COMPAT_IPC 3267 select COMPAT 3268 select MIPS32_COMPAT 3269 select SYSVIPC_COMPAT if SYSVIPC 3270 help 3271 Select this option if you want to run o32 binaries. These are pure 3272 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3273 existing binaries are in this format. 3274 3275 If unsure, say Y. 3276 3277config MIPS32_N32 3278 bool "Kernel support for n32 binaries" 3279 depends on 64BIT 3280 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3281 select COMPAT 3282 select MIPS32_COMPAT 3283 select SYSVIPC_COMPAT if SYSVIPC 3284 help 3285 Select this option if you want to run n32 binaries. These are 3286 64-bit binaries using 32-bit quantities for addressing and certain 3287 data that would normally be 64-bit. They are used in special 3288 cases. 3289 3290 If unsure, say N. 3291 3292menu "Power management options" 3293 3294config ARCH_HIBERNATION_POSSIBLE 3295 def_bool y 3296 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3297 3298config ARCH_SUSPEND_POSSIBLE 3299 def_bool y 3300 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3301 3302source "kernel/power/Kconfig" 3303 3304endmenu 3305 3306config MIPS_EXTERNAL_TIMER 3307 bool 3308 3309menu "CPU Power Management" 3310 3311if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3312source "drivers/cpufreq/Kconfig" 3313endif 3314 3315source "drivers/cpuidle/Kconfig" 3316 3317endmenu 3318 3319source "arch/mips/kvm/Kconfig" 3320 3321source "arch/mips/vdso/Kconfig" 3322