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_GETTIMEOFDAY 36 select GENERIC_IOMAP 37 select GENERIC_IRQ_PROBE 38 select GENERIC_IRQ_SHOW 39 select GENERIC_ISA_DMA if EISA 40 select GENERIC_LIB_ASHLDI3 41 select GENERIC_LIB_ASHRDI3 42 select GENERIC_LIB_CMPDI2 43 select GENERIC_LIB_LSHRDI3 44 select GENERIC_LIB_UCMPDI2 45 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC 46 select GENERIC_SMP_IDLE_THREAD 47 select GENERIC_TIME_VSYSCALL 48 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 49 select HAVE_ARCH_COMPILER_H 50 select HAVE_ARCH_JUMP_LABEL 51 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT 52 select HAVE_ARCH_MMAP_RND_BITS if MMU 53 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 54 select HAVE_ARCH_SECCOMP_FILTER 55 select HAVE_ARCH_TRACEHOOK 56 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 57 select HAVE_ASM_MODVERSIONS 58 select HAVE_CONTEXT_TRACKING 59 select HAVE_TIF_NOHZ 60 select HAVE_C_RECORDMCOUNT 61 select HAVE_DEBUG_KMEMLEAK 62 select HAVE_DEBUG_STACKOVERFLOW 63 select HAVE_DMA_CONTIGUOUS 64 select HAVE_DYNAMIC_FTRACE 65 select HAVE_EBPF_JIT if !CPU_MICROMIPS && \ 66 !CPU_DADDI_WORKAROUNDS && \ 67 !CPU_R4000_WORKAROUNDS && \ 68 !CPU_R4400_WORKAROUNDS 69 select HAVE_EXIT_THREAD 70 select HAVE_FAST_GUP 71 select HAVE_FTRACE_MCOUNT_RECORD 72 select HAVE_FUNCTION_GRAPH_TRACER 73 select HAVE_FUNCTION_TRACER 74 select HAVE_GCC_PLUGINS 75 select HAVE_GENERIC_VDSO 76 select HAVE_IOREMAP_PROT 77 select HAVE_IRQ_EXIT_ON_IRQ_STACK 78 select HAVE_IRQ_TIME_ACCOUNTING 79 select HAVE_KPROBES 80 select HAVE_KRETPROBES 81 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION 82 select HAVE_MOD_ARCH_SPECIFIC 83 select HAVE_NMI 84 select HAVE_PERF_EVENTS 85 select HAVE_PERF_REGS 86 select HAVE_PERF_USER_STACK_DUMP 87 select HAVE_REGS_AND_STACK_ACCESS_API 88 select HAVE_RSEQ 89 select HAVE_SPARSE_SYSCALL_NR 90 select HAVE_STACKPROTECTOR 91 select HAVE_SYSCALL_TRACEPOINTS 92 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP 93 select IRQ_FORCED_THREADING 94 select ISA if EISA 95 select MODULES_USE_ELF_REL if MODULES 96 select MODULES_USE_ELF_RELA if MODULES && 64BIT 97 select PERF_USE_VMALLOC 98 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 99 select RTC_LIB 100 select SYSCTL_EXCEPTION_TRACE 101 select TRACE_IRQFLAGS_SUPPORT 102 select VIRT_TO_BUS 103 select ARCH_HAS_ELFCORE_COMPAT 104 105config MIPS_FIXUP_BIGPHYS_ADDR 106 bool 107 108config MIPS_GENERIC 109 bool 110 111config MACH_INGENIC 112 bool 113 select SYS_SUPPORTS_32BIT_KERNEL 114 select SYS_SUPPORTS_LITTLE_ENDIAN 115 select SYS_SUPPORTS_ZBOOT 116 select DMA_NONCOHERENT 117 select ARCH_HAS_SYNC_DMA_FOR_CPU 118 select IRQ_MIPS_CPU 119 select PINCTRL 120 select GPIOLIB 121 select COMMON_CLK 122 select GENERIC_IRQ_CHIP 123 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 124 select USE_OF 125 select CPU_SUPPORTS_CPUFREQ 126 select MIPS_EXTERNAL_TIMER 127 128menu "Machine selection" 129 130choice 131 prompt "System type" 132 default MIPS_GENERIC_KERNEL 133 134config MIPS_GENERIC_KERNEL 135 bool "Generic board-agnostic MIPS kernel" 136 select ARCH_HAS_SETUP_DMA_OPS 137 select MIPS_GENERIC 138 select BOOT_RAW 139 select BUILTIN_DTB 140 select CEVT_R4K 141 select CLKSRC_MIPS_GIC 142 select COMMON_CLK 143 select CPU_MIPSR2_IRQ_EI 144 select CPU_MIPSR2_IRQ_VI 145 select CSRC_R4K 146 select DMA_NONCOHERENT 147 select HAVE_PCI 148 select IRQ_MIPS_CPU 149 select MIPS_AUTO_PFN_OFFSET 150 select MIPS_CPU_SCACHE 151 select MIPS_GIC 152 select MIPS_L1_CACHE_SHIFT_7 153 select NO_EXCEPT_FILL 154 select PCI_DRIVERS_GENERIC 155 select SMP_UP if SMP 156 select SWAP_IO_SPACE 157 select SYS_HAS_CPU_MIPS32_R1 158 select SYS_HAS_CPU_MIPS32_R2 159 select SYS_HAS_CPU_MIPS32_R6 160 select SYS_HAS_CPU_MIPS64_R1 161 select SYS_HAS_CPU_MIPS64_R2 162 select SYS_HAS_CPU_MIPS64_R6 163 select SYS_SUPPORTS_32BIT_KERNEL 164 select SYS_SUPPORTS_64BIT_KERNEL 165 select SYS_SUPPORTS_BIG_ENDIAN 166 select SYS_SUPPORTS_HIGHMEM 167 select SYS_SUPPORTS_LITTLE_ENDIAN 168 select SYS_SUPPORTS_MICROMIPS 169 select SYS_SUPPORTS_MIPS16 170 select SYS_SUPPORTS_MIPS_CPS 171 select SYS_SUPPORTS_MULTITHREADING 172 select SYS_SUPPORTS_RELOCATABLE 173 select SYS_SUPPORTS_SMARTMIPS 174 select SYS_SUPPORTS_ZBOOT 175 select UHI_BOOT 176 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 177 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 178 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 179 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 180 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 181 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 182 select USE_OF 183 help 184 Select this to build a kernel which aims to support multiple boards, 185 generally using a flattened device tree passed from the bootloader 186 using the boot protocol defined in the UHI (Unified Hosting 187 Interface) specification. 188 189config MIPS_ALCHEMY 190 bool "Alchemy processor based machines" 191 select PHYS_ADDR_T_64BIT 192 select CEVT_R4K 193 select CSRC_R4K 194 select IRQ_MIPS_CPU 195 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is 196 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 197 select SYS_HAS_CPU_MIPS32_R1 198 select SYS_SUPPORTS_32BIT_KERNEL 199 select SYS_SUPPORTS_APM_EMULATION 200 select GPIOLIB 201 select SYS_SUPPORTS_ZBOOT 202 select COMMON_CLK 203 204config AR7 205 bool "Texas Instruments AR7" 206 select BOOT_ELF32 207 select COMMON_CLK 208 select DMA_NONCOHERENT 209 select CEVT_R4K 210 select CSRC_R4K 211 select IRQ_MIPS_CPU 212 select NO_EXCEPT_FILL 213 select SWAP_IO_SPACE 214 select SYS_HAS_CPU_MIPS32_R1 215 select SYS_HAS_EARLY_PRINTK 216 select SYS_SUPPORTS_32BIT_KERNEL 217 select SYS_SUPPORTS_LITTLE_ENDIAN 218 select SYS_SUPPORTS_MIPS16 219 select SYS_SUPPORTS_ZBOOT_UART16550 220 select GPIOLIB 221 select VLYNQ 222 help 223 Support for the Texas Instruments AR7 System-on-a-Chip 224 family: TNETD7100, 7200 and 7300. 225 226config ATH25 227 bool "Atheros AR231x/AR531x SoC support" 228 select CEVT_R4K 229 select CSRC_R4K 230 select DMA_NONCOHERENT 231 select IRQ_MIPS_CPU 232 select IRQ_DOMAIN 233 select SYS_HAS_CPU_MIPS32_R1 234 select SYS_SUPPORTS_BIG_ENDIAN 235 select SYS_SUPPORTS_32BIT_KERNEL 236 select SYS_HAS_EARLY_PRINTK 237 help 238 Support for Atheros AR231x and Atheros AR531x based boards 239 240config ATH79 241 bool "Atheros AR71XX/AR724X/AR913X based boards" 242 select ARCH_HAS_RESET_CONTROLLER 243 select BOOT_RAW 244 select CEVT_R4K 245 select CSRC_R4K 246 select DMA_NONCOHERENT 247 select GPIOLIB 248 select PINCTRL 249 select COMMON_CLK 250 select IRQ_MIPS_CPU 251 select SYS_HAS_CPU_MIPS32_R2 252 select SYS_HAS_EARLY_PRINTK 253 select SYS_SUPPORTS_32BIT_KERNEL 254 select SYS_SUPPORTS_BIG_ENDIAN 255 select SYS_SUPPORTS_MIPS16 256 select SYS_SUPPORTS_ZBOOT_UART_PROM 257 select USE_OF 258 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 259 help 260 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 261 262config BMIPS_GENERIC 263 bool "Broadcom Generic BMIPS kernel" 264 select ARCH_HAS_RESET_CONTROLLER 265 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 266 select BOOT_RAW 267 select NO_EXCEPT_FILL 268 select USE_OF 269 select CEVT_R4K 270 select CSRC_R4K 271 select SYNC_R4K 272 select COMMON_CLK 273 select BCM6345_L1_IRQ 274 select BCM7038_L1_IRQ 275 select BCM7120_L2_IRQ 276 select BRCMSTB_L2_IRQ 277 select IRQ_MIPS_CPU 278 select DMA_NONCOHERENT 279 select SYS_SUPPORTS_32BIT_KERNEL 280 select SYS_SUPPORTS_LITTLE_ENDIAN 281 select SYS_SUPPORTS_BIG_ENDIAN 282 select SYS_SUPPORTS_HIGHMEM 283 select SYS_HAS_CPU_BMIPS32_3300 284 select SYS_HAS_CPU_BMIPS4350 285 select SYS_HAS_CPU_BMIPS4380 286 select SYS_HAS_CPU_BMIPS5000 287 select SWAP_IO_SPACE 288 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 289 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 290 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 291 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 292 select HARDIRQS_SW_RESEND 293 select HAVE_PCI 294 select PCI_DRIVERS_GENERIC 295 help 296 Build a generic DT-based kernel image that boots on select 297 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 298 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 299 must be set appropriately for your board. 300 301config BCM47XX 302 bool "Broadcom BCM47XX based boards" 303 select BOOT_RAW 304 select CEVT_R4K 305 select CSRC_R4K 306 select DMA_NONCOHERENT 307 select HAVE_PCI 308 select IRQ_MIPS_CPU 309 select SYS_HAS_CPU_MIPS32_R1 310 select NO_EXCEPT_FILL 311 select SYS_SUPPORTS_32BIT_KERNEL 312 select SYS_SUPPORTS_LITTLE_ENDIAN 313 select SYS_SUPPORTS_MIPS16 314 select SYS_SUPPORTS_ZBOOT 315 select SYS_HAS_EARLY_PRINTK 316 select USE_GENERIC_EARLY_PRINTK_8250 317 select GPIOLIB 318 select LEDS_GPIO_REGISTER 319 select BCM47XX_NVRAM 320 select BCM47XX_SPROM 321 select BCM47XX_SSB if !BCM47XX_BCMA 322 help 323 Support for BCM47XX based boards 324 325config BCM63XX 326 bool "Broadcom BCM63XX based boards" 327 select BOOT_RAW 328 select CEVT_R4K 329 select CSRC_R4K 330 select SYNC_R4K 331 select DMA_NONCOHERENT 332 select IRQ_MIPS_CPU 333 select SYS_SUPPORTS_32BIT_KERNEL 334 select SYS_SUPPORTS_BIG_ENDIAN 335 select SYS_HAS_EARLY_PRINTK 336 select SYS_HAS_CPU_BMIPS32_3300 337 select SYS_HAS_CPU_BMIPS4350 338 select SYS_HAS_CPU_BMIPS4380 339 select SWAP_IO_SPACE 340 select GPIOLIB 341 select MIPS_L1_CACHE_SHIFT_4 342 select HAVE_LEGACY_CLK 343 help 344 Support for BCM63XX based boards 345 346config MIPS_COBALT 347 bool "Cobalt Server" 348 select CEVT_R4K 349 select CSRC_R4K 350 select CEVT_GT641XX 351 select DMA_NONCOHERENT 352 select FORCE_PCI 353 select I8253 354 select I8259 355 select IRQ_MIPS_CPU 356 select IRQ_GT641XX 357 select PCI_GT64XXX_PCI0 358 select SYS_HAS_CPU_NEVADA 359 select SYS_HAS_EARLY_PRINTK 360 select SYS_SUPPORTS_32BIT_KERNEL 361 select SYS_SUPPORTS_64BIT_KERNEL 362 select SYS_SUPPORTS_LITTLE_ENDIAN 363 select USE_GENERIC_EARLY_PRINTK_8250 364 365config MACH_DECSTATION 366 bool "DECstations" 367 select BOOT_ELF32 368 select CEVT_DS1287 369 select CEVT_R4K if CPU_R4X00 370 select CSRC_IOASIC 371 select CSRC_R4K if CPU_R4X00 372 select CPU_DADDI_WORKAROUNDS if 64BIT 373 select CPU_R4000_WORKAROUNDS if 64BIT 374 select CPU_R4400_WORKAROUNDS if 64BIT 375 select DMA_NONCOHERENT 376 select NO_IOPORT_MAP 377 select IRQ_MIPS_CPU 378 select SYS_HAS_CPU_R3000 379 select SYS_HAS_CPU_R4X00 380 select SYS_SUPPORTS_32BIT_KERNEL 381 select SYS_SUPPORTS_64BIT_KERNEL 382 select SYS_SUPPORTS_LITTLE_ENDIAN 383 select SYS_SUPPORTS_128HZ 384 select SYS_SUPPORTS_256HZ 385 select SYS_SUPPORTS_1024HZ 386 select MIPS_L1_CACHE_SHIFT_4 387 help 388 This enables support for DEC's MIPS based workstations. For details 389 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 390 DECstation porting pages on <http://decstation.unix-ag.org/>. 391 392 If you have one of the following DECstation Models you definitely 393 want to choose R4xx0 for the CPU Type: 394 395 DECstation 5000/50 396 DECstation 5000/150 397 DECstation 5000/260 398 DECsystem 5900/260 399 400 otherwise choose R3000. 401 402config MACH_JAZZ 403 bool "Jazz family of machines" 404 select ARC_MEMORY 405 select ARC_PROMLIB 406 select ARCH_MIGHT_HAVE_PC_PARPORT 407 select ARCH_MIGHT_HAVE_PC_SERIO 408 select DMA_OPS 409 select FW_ARC 410 select FW_ARC32 411 select ARCH_MAY_HAVE_PC_FDC 412 select CEVT_R4K 413 select CSRC_R4K 414 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 415 select GENERIC_ISA_DMA 416 select HAVE_PCSPKR_PLATFORM 417 select IRQ_MIPS_CPU 418 select I8253 419 select I8259 420 select ISA 421 select SYS_HAS_CPU_R4X00 422 select SYS_SUPPORTS_32BIT_KERNEL 423 select SYS_SUPPORTS_64BIT_KERNEL 424 select SYS_SUPPORTS_100HZ 425 select SYS_SUPPORTS_LITTLE_ENDIAN 426 help 427 This a family of machines based on the MIPS R4030 chipset which was 428 used by several vendors to build RISC/os and Windows NT workstations. 429 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 430 Olivetti M700-10 workstations. 431 432config MACH_INGENIC_SOC 433 bool "Ingenic SoC based machines" 434 select MIPS_GENERIC 435 select MACH_INGENIC 436 select SYS_SUPPORTS_ZBOOT_UART16550 437 select CPU_SUPPORTS_CPUFREQ 438 select MIPS_EXTERNAL_TIMER 439 440config LANTIQ 441 bool "Lantiq based platforms" 442 select DMA_NONCOHERENT 443 select IRQ_MIPS_CPU 444 select CEVT_R4K 445 select CSRC_R4K 446 select SYS_HAS_CPU_MIPS32_R1 447 select SYS_HAS_CPU_MIPS32_R2 448 select SYS_SUPPORTS_BIG_ENDIAN 449 select SYS_SUPPORTS_32BIT_KERNEL 450 select SYS_SUPPORTS_MIPS16 451 select SYS_SUPPORTS_MULTITHREADING 452 select SYS_SUPPORTS_VPE_LOADER 453 select SYS_HAS_EARLY_PRINTK 454 select GPIOLIB 455 select SWAP_IO_SPACE 456 select BOOT_RAW 457 select HAVE_LEGACY_CLK 458 select USE_OF 459 select PINCTRL 460 select PINCTRL_LANTIQ 461 select ARCH_HAS_RESET_CONTROLLER 462 select RESET_CONTROLLER 463 464config MACH_LOONGSON32 465 bool "Loongson 32-bit family of machines" 466 select SYS_SUPPORTS_ZBOOT 467 help 468 This enables support for the Loongson-1 family of machines. 469 470 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 471 the Institute of Computing Technology (ICT), Chinese Academy of 472 Sciences (CAS). 473 474config MACH_LOONGSON2EF 475 bool "Loongson-2E/F family of machines" 476 select SYS_SUPPORTS_ZBOOT 477 help 478 This enables the support of early Loongson-2E/F family of machines. 479 480config MACH_LOONGSON64 481 bool "Loongson 64-bit family of machines" 482 select ARCH_SPARSEMEM_ENABLE 483 select ARCH_MIGHT_HAVE_PC_PARPORT 484 select ARCH_MIGHT_HAVE_PC_SERIO 485 select GENERIC_ISA_DMA_SUPPORT_BROKEN 486 select BOOT_ELF32 487 select BOARD_SCACHE 488 select CSRC_R4K 489 select CEVT_R4K 490 select CPU_HAS_WB 491 select FORCE_PCI 492 select ISA 493 select I8259 494 select IRQ_MIPS_CPU 495 select NO_EXCEPT_FILL 496 select NR_CPUS_DEFAULT_64 497 select USE_GENERIC_EARLY_PRINTK_8250 498 select PCI_DRIVERS_GENERIC 499 select SYS_HAS_CPU_LOONGSON64 500 select SYS_HAS_EARLY_PRINTK 501 select SYS_SUPPORTS_SMP 502 select SYS_SUPPORTS_HOTPLUG_CPU 503 select SYS_SUPPORTS_NUMA 504 select SYS_SUPPORTS_64BIT_KERNEL 505 select SYS_SUPPORTS_HIGHMEM 506 select SYS_SUPPORTS_LITTLE_ENDIAN 507 select SYS_SUPPORTS_ZBOOT 508 select SYS_SUPPORTS_RELOCATABLE 509 select ZONE_DMA32 510 select COMMON_CLK 511 select USE_OF 512 select BUILTIN_DTB 513 select PCI_HOST_GENERIC 514 help 515 This enables the support of Loongson-2/3 family of machines. 516 517 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 518 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 519 and Loongson-2F which will be removed), developed by the Institute 520 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 521 522config MIPS_MALTA 523 bool "MIPS Malta board" 524 select ARCH_MAY_HAVE_PC_FDC 525 select ARCH_MIGHT_HAVE_PC_PARPORT 526 select ARCH_MIGHT_HAVE_PC_SERIO 527 select BOOT_ELF32 528 select BOOT_RAW 529 select BUILTIN_DTB 530 select CEVT_R4K 531 select CLKSRC_MIPS_GIC 532 select COMMON_CLK 533 select CSRC_R4K 534 select DMA_NONCOHERENT 535 select GENERIC_ISA_DMA 536 select HAVE_PCSPKR_PLATFORM 537 select HAVE_PCI 538 select I8253 539 select I8259 540 select IRQ_MIPS_CPU 541 select MIPS_BONITO64 542 select MIPS_CPU_SCACHE 543 select MIPS_GIC 544 select MIPS_L1_CACHE_SHIFT_6 545 select MIPS_MSC 546 select PCI_GT64XXX_PCI0 547 select SMP_UP if SMP 548 select SWAP_IO_SPACE 549 select SYS_HAS_CPU_MIPS32_R1 550 select SYS_HAS_CPU_MIPS32_R2 551 select SYS_HAS_CPU_MIPS32_R3_5 552 select SYS_HAS_CPU_MIPS32_R5 553 select SYS_HAS_CPU_MIPS32_R6 554 select SYS_HAS_CPU_MIPS64_R1 555 select SYS_HAS_CPU_MIPS64_R2 556 select SYS_HAS_CPU_MIPS64_R6 557 select SYS_HAS_CPU_NEVADA 558 select SYS_HAS_CPU_RM7000 559 select SYS_SUPPORTS_32BIT_KERNEL 560 select SYS_SUPPORTS_64BIT_KERNEL 561 select SYS_SUPPORTS_BIG_ENDIAN 562 select SYS_SUPPORTS_HIGHMEM 563 select SYS_SUPPORTS_LITTLE_ENDIAN 564 select SYS_SUPPORTS_MICROMIPS 565 select SYS_SUPPORTS_MIPS16 566 select SYS_SUPPORTS_MIPS_CMP 567 select SYS_SUPPORTS_MIPS_CPS 568 select SYS_SUPPORTS_MULTITHREADING 569 select SYS_SUPPORTS_RELOCATABLE 570 select SYS_SUPPORTS_SMARTMIPS 571 select SYS_SUPPORTS_VPE_LOADER 572 select SYS_SUPPORTS_ZBOOT 573 select USE_OF 574 select WAR_ICACHE_REFILLS 575 select ZONE_DMA32 if 64BIT 576 help 577 This enables support for the MIPS Technologies Malta evaluation 578 board. 579 580config MACH_PIC32 581 bool "Microchip PIC32 Family" 582 help 583 This enables support for the Microchip PIC32 family of platforms. 584 585 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 586 microcontrollers. 587 588config MACH_VR41XX 589 bool "NEC VR4100 series based machines" 590 select CEVT_R4K 591 select CSRC_R4K 592 select SYS_HAS_CPU_VR41XX 593 select SYS_SUPPORTS_MIPS16 594 select GPIOLIB 595 596config MACH_NINTENDO64 597 bool "Nintendo 64 console" 598 select CEVT_R4K 599 select CSRC_R4K 600 select SYS_HAS_CPU_R4300 601 select SYS_SUPPORTS_BIG_ENDIAN 602 select SYS_SUPPORTS_ZBOOT 603 select SYS_SUPPORTS_32BIT_KERNEL 604 select SYS_SUPPORTS_64BIT_KERNEL 605 select DMA_NONCOHERENT 606 select IRQ_MIPS_CPU 607 608config RALINK 609 bool "Ralink based machines" 610 select CEVT_R4K 611 select COMMON_CLK 612 select CSRC_R4K 613 select BOOT_RAW 614 select DMA_NONCOHERENT 615 select IRQ_MIPS_CPU 616 select USE_OF 617 select SYS_HAS_CPU_MIPS32_R1 618 select SYS_HAS_CPU_MIPS32_R2 619 select SYS_SUPPORTS_32BIT_KERNEL 620 select SYS_SUPPORTS_LITTLE_ENDIAN 621 select SYS_SUPPORTS_MIPS16 622 select SYS_SUPPORTS_ZBOOT 623 select SYS_HAS_EARLY_PRINTK 624 select ARCH_HAS_RESET_CONTROLLER 625 select RESET_CONTROLLER 626 627config MACH_REALTEK_RTL 628 bool "Realtek RTL838x/RTL839x based machines" 629 select MIPS_GENERIC 630 select DMA_NONCOHERENT 631 select IRQ_MIPS_CPU 632 select CSRC_R4K 633 select CEVT_R4K 634 select SYS_HAS_CPU_MIPS32_R1 635 select SYS_HAS_CPU_MIPS32_R2 636 select SYS_SUPPORTS_BIG_ENDIAN 637 select SYS_SUPPORTS_32BIT_KERNEL 638 select SYS_SUPPORTS_MIPS16 639 select SYS_SUPPORTS_MULTITHREADING 640 select SYS_SUPPORTS_VPE_LOADER 641 select BOOT_RAW 642 select PINCTRL 643 select USE_OF 644 645config SGI_IP22 646 bool "SGI IP22 (Indy/Indigo2)" 647 select ARC_MEMORY 648 select ARC_PROMLIB 649 select FW_ARC 650 select FW_ARC32 651 select ARCH_MIGHT_HAVE_PC_SERIO 652 select BOOT_ELF32 653 select CEVT_R4K 654 select CSRC_R4K 655 select DEFAULT_SGI_PARTITION 656 select DMA_NONCOHERENT 657 select HAVE_EISA 658 select I8253 659 select I8259 660 select IP22_CPU_SCACHE 661 select IRQ_MIPS_CPU 662 select GENERIC_ISA_DMA_SUPPORT_BROKEN 663 select SGI_HAS_I8042 664 select SGI_HAS_INDYDOG 665 select SGI_HAS_HAL2 666 select SGI_HAS_SEEQ 667 select SGI_HAS_WD93 668 select SGI_HAS_ZILOG 669 select SWAP_IO_SPACE 670 select SYS_HAS_CPU_R4X00 671 select SYS_HAS_CPU_R5000 672 select SYS_HAS_EARLY_PRINTK 673 select SYS_SUPPORTS_32BIT_KERNEL 674 select SYS_SUPPORTS_64BIT_KERNEL 675 select SYS_SUPPORTS_BIG_ENDIAN 676 select WAR_R4600_V1_INDEX_ICACHEOP 677 select WAR_R4600_V1_HIT_CACHEOP 678 select WAR_R4600_V2_HIT_CACHEOP 679 select MIPS_L1_CACHE_SHIFT_7 680 help 681 This are the SGI Indy, Challenge S and Indigo2, as well as certain 682 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 683 that runs on these, say Y here. 684 685config SGI_IP27 686 bool "SGI IP27 (Origin200/2000)" 687 select ARCH_HAS_PHYS_TO_DMA 688 select ARCH_SPARSEMEM_ENABLE 689 select FW_ARC 690 select FW_ARC64 691 select ARC_CMDLINE_ONLY 692 select BOOT_ELF64 693 select DEFAULT_SGI_PARTITION 694 select FORCE_PCI 695 select SYS_HAS_EARLY_PRINTK 696 select HAVE_PCI 697 select IRQ_MIPS_CPU 698 select IRQ_DOMAIN_HIERARCHY 699 select NR_CPUS_DEFAULT_64 700 select PCI_DRIVERS_GENERIC 701 select PCI_XTALK_BRIDGE 702 select SYS_HAS_CPU_R10000 703 select SYS_SUPPORTS_64BIT_KERNEL 704 select SYS_SUPPORTS_BIG_ENDIAN 705 select SYS_SUPPORTS_NUMA 706 select SYS_SUPPORTS_SMP 707 select WAR_R10000_LLSC 708 select MIPS_L1_CACHE_SHIFT_7 709 select NUMA 710 help 711 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 712 workstations. To compile a Linux kernel that runs on these, say Y 713 here. 714 715config SGI_IP28 716 bool "SGI IP28 (Indigo2 R10k)" 717 select ARC_MEMORY 718 select ARC_PROMLIB 719 select FW_ARC 720 select FW_ARC64 721 select ARCH_MIGHT_HAVE_PC_SERIO 722 select BOOT_ELF64 723 select CEVT_R4K 724 select CSRC_R4K 725 select DEFAULT_SGI_PARTITION 726 select DMA_NONCOHERENT 727 select GENERIC_ISA_DMA_SUPPORT_BROKEN 728 select IRQ_MIPS_CPU 729 select HAVE_EISA 730 select I8253 731 select I8259 732 select SGI_HAS_I8042 733 select SGI_HAS_INDYDOG 734 select SGI_HAS_HAL2 735 select SGI_HAS_SEEQ 736 select SGI_HAS_WD93 737 select SGI_HAS_ZILOG 738 select SWAP_IO_SPACE 739 select SYS_HAS_CPU_R10000 740 select SYS_HAS_EARLY_PRINTK 741 select SYS_SUPPORTS_64BIT_KERNEL 742 select SYS_SUPPORTS_BIG_ENDIAN 743 select WAR_R10000_LLSC 744 select MIPS_L1_CACHE_SHIFT_7 745 help 746 This is the SGI Indigo2 with R10000 processor. To compile a Linux 747 kernel that runs on these, say Y here. 748 749config SGI_IP30 750 bool "SGI IP30 (Octane/Octane2)" 751 select ARCH_HAS_PHYS_TO_DMA 752 select FW_ARC 753 select FW_ARC64 754 select BOOT_ELF64 755 select CEVT_R4K 756 select CSRC_R4K 757 select FORCE_PCI 758 select SYNC_R4K if SMP 759 select ZONE_DMA32 760 select HAVE_PCI 761 select IRQ_MIPS_CPU 762 select IRQ_DOMAIN_HIERARCHY 763 select PCI_DRIVERS_GENERIC 764 select PCI_XTALK_BRIDGE 765 select SYS_HAS_EARLY_PRINTK 766 select SYS_HAS_CPU_R10000 767 select SYS_SUPPORTS_64BIT_KERNEL 768 select SYS_SUPPORTS_BIG_ENDIAN 769 select SYS_SUPPORTS_SMP 770 select WAR_R10000_LLSC 771 select MIPS_L1_CACHE_SHIFT_7 772 select ARC_MEMORY 773 help 774 These are the SGI Octane and Octane2 graphics workstations. To 775 compile a Linux kernel that runs on these, say Y here. 776 777config SGI_IP32 778 bool "SGI IP32 (O2)" 779 select ARC_MEMORY 780 select ARC_PROMLIB 781 select ARCH_HAS_PHYS_TO_DMA 782 select FW_ARC 783 select FW_ARC32 784 select BOOT_ELF32 785 select CEVT_R4K 786 select CSRC_R4K 787 select DMA_NONCOHERENT 788 select HAVE_PCI 789 select IRQ_MIPS_CPU 790 select R5000_CPU_SCACHE 791 select RM7000_CPU_SCACHE 792 select SYS_HAS_CPU_R5000 793 select SYS_HAS_CPU_R10000 if BROKEN 794 select SYS_HAS_CPU_RM7000 795 select SYS_HAS_CPU_NEVADA 796 select SYS_SUPPORTS_64BIT_KERNEL 797 select SYS_SUPPORTS_BIG_ENDIAN 798 select WAR_ICACHE_REFILLS 799 help 800 If you want this kernel to run on SGI O2 workstation, say Y here. 801 802config SIBYTE_CRHINE 803 bool "Sibyte BCM91120C-CRhine" 804 select BOOT_ELF32 805 select SIBYTE_BCM1120 806 select SWAP_IO_SPACE 807 select SYS_HAS_CPU_SB1 808 select SYS_SUPPORTS_BIG_ENDIAN 809 select SYS_SUPPORTS_LITTLE_ENDIAN 810 811config SIBYTE_CARMEL 812 bool "Sibyte BCM91120x-Carmel" 813 select BOOT_ELF32 814 select SIBYTE_BCM1120 815 select SWAP_IO_SPACE 816 select SYS_HAS_CPU_SB1 817 select SYS_SUPPORTS_BIG_ENDIAN 818 select SYS_SUPPORTS_LITTLE_ENDIAN 819 820config SIBYTE_CRHONE 821 bool "Sibyte BCM91125C-CRhone" 822 select BOOT_ELF32 823 select SIBYTE_BCM1125 824 select SWAP_IO_SPACE 825 select SYS_HAS_CPU_SB1 826 select SYS_SUPPORTS_BIG_ENDIAN 827 select SYS_SUPPORTS_HIGHMEM 828 select SYS_SUPPORTS_LITTLE_ENDIAN 829 830config SIBYTE_RHONE 831 bool "Sibyte BCM91125E-Rhone" 832 select BOOT_ELF32 833 select SIBYTE_BCM1125H 834 select SWAP_IO_SPACE 835 select SYS_HAS_CPU_SB1 836 select SYS_SUPPORTS_BIG_ENDIAN 837 select SYS_SUPPORTS_LITTLE_ENDIAN 838 839config SIBYTE_SWARM 840 bool "Sibyte BCM91250A-SWARM" 841 select BOOT_ELF32 842 select HAVE_PATA_PLATFORM 843 select SIBYTE_SB1250 844 select SWAP_IO_SPACE 845 select SYS_HAS_CPU_SB1 846 select SYS_SUPPORTS_BIG_ENDIAN 847 select SYS_SUPPORTS_HIGHMEM 848 select SYS_SUPPORTS_LITTLE_ENDIAN 849 select ZONE_DMA32 if 64BIT 850 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 851 852config SIBYTE_LITTLESUR 853 bool "Sibyte BCM91250C2-LittleSur" 854 select BOOT_ELF32 855 select HAVE_PATA_PLATFORM 856 select SIBYTE_SB1250 857 select SWAP_IO_SPACE 858 select SYS_HAS_CPU_SB1 859 select SYS_SUPPORTS_BIG_ENDIAN 860 select SYS_SUPPORTS_HIGHMEM 861 select SYS_SUPPORTS_LITTLE_ENDIAN 862 select ZONE_DMA32 if 64BIT 863 864config SIBYTE_SENTOSA 865 bool "Sibyte BCM91250E-Sentosa" 866 select BOOT_ELF32 867 select SIBYTE_SB1250 868 select SWAP_IO_SPACE 869 select SYS_HAS_CPU_SB1 870 select SYS_SUPPORTS_BIG_ENDIAN 871 select SYS_SUPPORTS_LITTLE_ENDIAN 872 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 873 874config SIBYTE_BIGSUR 875 bool "Sibyte BCM91480B-BigSur" 876 select BOOT_ELF32 877 select NR_CPUS_DEFAULT_4 878 select SIBYTE_BCM1x80 879 select SWAP_IO_SPACE 880 select SYS_HAS_CPU_SB1 881 select SYS_SUPPORTS_BIG_ENDIAN 882 select SYS_SUPPORTS_HIGHMEM 883 select SYS_SUPPORTS_LITTLE_ENDIAN 884 select ZONE_DMA32 if 64BIT 885 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 886 887config SNI_RM 888 bool "SNI RM200/300/400" 889 select ARC_MEMORY 890 select ARC_PROMLIB 891 select FW_ARC if CPU_LITTLE_ENDIAN 892 select FW_ARC32 if CPU_LITTLE_ENDIAN 893 select FW_SNIPROM if CPU_BIG_ENDIAN 894 select ARCH_MAY_HAVE_PC_FDC 895 select ARCH_MIGHT_HAVE_PC_PARPORT 896 select ARCH_MIGHT_HAVE_PC_SERIO 897 select BOOT_ELF32 898 select CEVT_R4K 899 select CSRC_R4K 900 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 901 select DMA_NONCOHERENT 902 select GENERIC_ISA_DMA 903 select HAVE_EISA 904 select HAVE_PCSPKR_PLATFORM 905 select HAVE_PCI 906 select IRQ_MIPS_CPU 907 select I8253 908 select I8259 909 select ISA 910 select MIPS_L1_CACHE_SHIFT_6 911 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 912 select SYS_HAS_CPU_R4X00 913 select SYS_HAS_CPU_R5000 914 select SYS_HAS_CPU_R10000 915 select R5000_CPU_SCACHE 916 select SYS_HAS_EARLY_PRINTK 917 select SYS_SUPPORTS_32BIT_KERNEL 918 select SYS_SUPPORTS_64BIT_KERNEL 919 select SYS_SUPPORTS_BIG_ENDIAN 920 select SYS_SUPPORTS_HIGHMEM 921 select SYS_SUPPORTS_LITTLE_ENDIAN 922 select WAR_R4600_V2_HIT_CACHEOP 923 help 924 The SNI RM200/300/400 are MIPS-based machines manufactured by 925 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 926 Technology and now in turn merged with Fujitsu. Say Y here to 927 support this machine type. 928 929config MACH_TX39XX 930 bool "Toshiba TX39 series based machines" 931 932config MACH_TX49XX 933 bool "Toshiba TX49 series based machines" 934 select WAR_TX49XX_ICACHE_INDEX_INV 935 936config MIKROTIK_RB532 937 bool "Mikrotik RB532 boards" 938 select CEVT_R4K 939 select CSRC_R4K 940 select DMA_NONCOHERENT 941 select HAVE_PCI 942 select IRQ_MIPS_CPU 943 select SYS_HAS_CPU_MIPS32_R1 944 select SYS_SUPPORTS_32BIT_KERNEL 945 select SYS_SUPPORTS_LITTLE_ENDIAN 946 select SWAP_IO_SPACE 947 select BOOT_RAW 948 select GPIOLIB 949 select MIPS_L1_CACHE_SHIFT_4 950 help 951 Support the Mikrotik(tm) RouterBoard 532 series, 952 based on the IDT RC32434 SoC. 953 954config CAVIUM_OCTEON_SOC 955 bool "Cavium Networks Octeon SoC based boards" 956 select CEVT_R4K 957 select ARCH_HAS_PHYS_TO_DMA 958 select HAVE_RAPIDIO 959 select PHYS_ADDR_T_64BIT 960 select SYS_SUPPORTS_64BIT_KERNEL 961 select SYS_SUPPORTS_BIG_ENDIAN 962 select EDAC_SUPPORT 963 select EDAC_ATOMIC_SCRUB 964 select SYS_SUPPORTS_LITTLE_ENDIAN 965 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 966 select SYS_HAS_EARLY_PRINTK 967 select SYS_HAS_CPU_CAVIUM_OCTEON 968 select HAVE_PCI 969 select HAVE_PLAT_DELAY 970 select HAVE_PLAT_FW_INIT_CMDLINE 971 select HAVE_PLAT_MEMCPY 972 select ZONE_DMA32 973 select GPIOLIB 974 select USE_OF 975 select ARCH_SPARSEMEM_ENABLE 976 select SYS_SUPPORTS_SMP 977 select NR_CPUS_DEFAULT_64 978 select MIPS_NR_CPU_NR_MAP_1024 979 select BUILTIN_DTB 980 select MTD 981 select MTD_COMPLEX_MAPPINGS 982 select SWIOTLB 983 select SYS_SUPPORTS_RELOCATABLE 984 help 985 This option supports all of the Octeon reference boards from Cavium 986 Networks. It builds a kernel that dynamically determines the Octeon 987 CPU type and supports all known board reference implementations. 988 Some of the supported boards are: 989 EBT3000 990 EBH3000 991 EBH3100 992 Thunder 993 Kodama 994 Hikari 995 Say Y here for most Octeon reference boards. 996 997endchoice 998 999source "arch/mips/alchemy/Kconfig" 1000source "arch/mips/ath25/Kconfig" 1001source "arch/mips/ath79/Kconfig" 1002source "arch/mips/bcm47xx/Kconfig" 1003source "arch/mips/bcm63xx/Kconfig" 1004source "arch/mips/bmips/Kconfig" 1005source "arch/mips/generic/Kconfig" 1006source "arch/mips/ingenic/Kconfig" 1007source "arch/mips/jazz/Kconfig" 1008source "arch/mips/lantiq/Kconfig" 1009source "arch/mips/pic32/Kconfig" 1010source "arch/mips/ralink/Kconfig" 1011source "arch/mips/sgi-ip27/Kconfig" 1012source "arch/mips/sibyte/Kconfig" 1013source "arch/mips/txx9/Kconfig" 1014source "arch/mips/vr41xx/Kconfig" 1015source "arch/mips/cavium-octeon/Kconfig" 1016source "arch/mips/loongson2ef/Kconfig" 1017source "arch/mips/loongson32/Kconfig" 1018source "arch/mips/loongson64/Kconfig" 1019 1020endmenu 1021 1022config GENERIC_HWEIGHT 1023 bool 1024 default y 1025 1026config GENERIC_CALIBRATE_DELAY 1027 bool 1028 default y 1029 1030config SCHED_OMIT_FRAME_POINTER 1031 bool 1032 default y 1033 1034# 1035# Select some configuration options automatically based on user selections. 1036# 1037config FW_ARC 1038 bool 1039 1040config ARCH_MAY_HAVE_PC_FDC 1041 bool 1042 1043config BOOT_RAW 1044 bool 1045 1046config CEVT_BCM1480 1047 bool 1048 1049config CEVT_DS1287 1050 bool 1051 1052config CEVT_GT641XX 1053 bool 1054 1055config CEVT_R4K 1056 bool 1057 1058config CEVT_SB1250 1059 bool 1060 1061config CEVT_TXX9 1062 bool 1063 1064config CSRC_BCM1480 1065 bool 1066 1067config CSRC_IOASIC 1068 bool 1069 1070config CSRC_R4K 1071 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1072 bool 1073 1074config CSRC_SB1250 1075 bool 1076 1077config MIPS_CLOCK_VSYSCALL 1078 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1079 1080config GPIO_TXX9 1081 select GPIOLIB 1082 bool 1083 1084config FW_CFE 1085 bool 1086 1087config ARCH_SUPPORTS_UPROBES 1088 bool 1089 1090config DMA_PERDEV_COHERENT 1091 bool 1092 select ARCH_HAS_SETUP_DMA_OPS 1093 select DMA_NONCOHERENT 1094 1095config DMA_NONCOHERENT 1096 bool 1097 # 1098 # MIPS allows mixing "slightly different" Cacheability and Coherency 1099 # Attribute bits. It is believed that the uncached access through 1100 # KSEG1 and the implementation specific "uncached accelerated" used 1101 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1102 # significant advantages. 1103 # 1104 select ARCH_HAS_DMA_WRITE_COMBINE 1105 select ARCH_HAS_DMA_PREP_COHERENT 1106 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1107 select ARCH_HAS_DMA_SET_UNCACHED 1108 select DMA_NONCOHERENT_MMAP 1109 select NEED_DMA_MAP_STATE 1110 1111config SYS_HAS_EARLY_PRINTK 1112 bool 1113 1114config SYS_SUPPORTS_HOTPLUG_CPU 1115 bool 1116 1117config MIPS_BONITO64 1118 bool 1119 1120config MIPS_MSC 1121 bool 1122 1123config SYNC_R4K 1124 bool 1125 1126config NO_IOPORT_MAP 1127 def_bool n 1128 1129config GENERIC_CSUM 1130 def_bool CPU_NO_LOAD_STORE_LR 1131 1132config GENERIC_ISA_DMA 1133 bool 1134 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1135 select ISA_DMA_API 1136 1137config GENERIC_ISA_DMA_SUPPORT_BROKEN 1138 bool 1139 select GENERIC_ISA_DMA 1140 1141config HAVE_PLAT_DELAY 1142 bool 1143 1144config HAVE_PLAT_FW_INIT_CMDLINE 1145 bool 1146 1147config HAVE_PLAT_MEMCPY 1148 bool 1149 1150config ISA_DMA_API 1151 bool 1152 1153config SYS_SUPPORTS_RELOCATABLE 1154 bool 1155 help 1156 Selected if the platform supports relocating the kernel. 1157 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1158 to allow access to command line and entropy sources. 1159 1160# 1161# Endianness selection. Sufficiently obscure so many users don't know what to 1162# answer,so we try hard to limit the available choices. Also the use of a 1163# choice statement should be more obvious to the user. 1164# 1165choice 1166 prompt "Endianness selection" 1167 help 1168 Some MIPS machines can be configured for either little or big endian 1169 byte order. These modes require different kernels and a different 1170 Linux distribution. In general there is one preferred byteorder for a 1171 particular system but some systems are just as commonly used in the 1172 one or the other endianness. 1173 1174config CPU_BIG_ENDIAN 1175 bool "Big endian" 1176 depends on SYS_SUPPORTS_BIG_ENDIAN 1177 1178config CPU_LITTLE_ENDIAN 1179 bool "Little endian" 1180 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1181 1182endchoice 1183 1184config EXPORT_UASM 1185 bool 1186 1187config SYS_SUPPORTS_APM_EMULATION 1188 bool 1189 1190config SYS_SUPPORTS_BIG_ENDIAN 1191 bool 1192 1193config SYS_SUPPORTS_LITTLE_ENDIAN 1194 bool 1195 1196config MIPS_HUGE_TLB_SUPPORT 1197 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1198 1199config IRQ_MSP_SLP 1200 bool 1201 1202config IRQ_MSP_CIC 1203 bool 1204 1205config IRQ_TXX9 1206 bool 1207 1208config IRQ_GT641XX 1209 bool 1210 1211config PCI_GT64XXX_PCI0 1212 bool 1213 1214config PCI_XTALK_BRIDGE 1215 bool 1216 1217config NO_EXCEPT_FILL 1218 bool 1219 1220config MIPS_SPRAM 1221 bool 1222 1223config SWAP_IO_SPACE 1224 bool 1225 1226config SGI_HAS_INDYDOG 1227 bool 1228 1229config SGI_HAS_HAL2 1230 bool 1231 1232config SGI_HAS_SEEQ 1233 bool 1234 1235config SGI_HAS_WD93 1236 bool 1237 1238config SGI_HAS_ZILOG 1239 bool 1240 1241config SGI_HAS_I8042 1242 bool 1243 1244config DEFAULT_SGI_PARTITION 1245 bool 1246 1247config FW_ARC32 1248 bool 1249 1250config FW_SNIPROM 1251 bool 1252 1253config BOOT_ELF32 1254 bool 1255 1256config MIPS_L1_CACHE_SHIFT_4 1257 bool 1258 1259config MIPS_L1_CACHE_SHIFT_5 1260 bool 1261 1262config MIPS_L1_CACHE_SHIFT_6 1263 bool 1264 1265config MIPS_L1_CACHE_SHIFT_7 1266 bool 1267 1268config MIPS_L1_CACHE_SHIFT 1269 int 1270 default "7" if MIPS_L1_CACHE_SHIFT_7 1271 default "6" if MIPS_L1_CACHE_SHIFT_6 1272 default "5" if MIPS_L1_CACHE_SHIFT_5 1273 default "4" if MIPS_L1_CACHE_SHIFT_4 1274 default "5" 1275 1276config ARC_CMDLINE_ONLY 1277 bool 1278 1279config ARC_CONSOLE 1280 bool "ARC console support" 1281 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1282 1283config ARC_MEMORY 1284 bool 1285 1286config ARC_PROMLIB 1287 bool 1288 1289config FW_ARC64 1290 bool 1291 1292config BOOT_ELF64 1293 bool 1294 1295menu "CPU selection" 1296 1297choice 1298 prompt "CPU type" 1299 default CPU_R4X00 1300 1301config CPU_LOONGSON64 1302 bool "Loongson 64-bit CPU" 1303 depends on SYS_HAS_CPU_LOONGSON64 1304 select ARCH_HAS_PHYS_TO_DMA 1305 select CPU_MIPSR2 1306 select CPU_HAS_PREFETCH 1307 select CPU_SUPPORTS_64BIT_KERNEL 1308 select CPU_SUPPORTS_HIGHMEM 1309 select CPU_SUPPORTS_HUGEPAGES 1310 select CPU_SUPPORTS_MSA 1311 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1312 select CPU_MIPSR2_IRQ_VI 1313 select WEAK_ORDERING 1314 select WEAK_REORDERING_BEYOND_LLSC 1315 select MIPS_ASID_BITS_VARIABLE 1316 select MIPS_PGD_C0_CONTEXT 1317 select MIPS_L1_CACHE_SHIFT_6 1318 select MIPS_FP_SUPPORT 1319 select GPIOLIB 1320 select SWIOTLB 1321 select HAVE_KVM 1322 help 1323 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1324 cores implements the MIPS64R2 instruction set with many extensions, 1325 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1326 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1327 Loongson-2E/2F is not covered here and will be removed in future. 1328 1329config LOONGSON3_ENHANCEMENT 1330 bool "New Loongson-3 CPU Enhancements" 1331 default n 1332 depends on CPU_LOONGSON64 1333 help 1334 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1335 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1336 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1337 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1338 Fast TLB refill support, etc. 1339 1340 This option enable those enhancements which are not probed at run 1341 time. If you want a generic kernel to run on all Loongson 3 machines, 1342 please say 'N' here. If you want a high-performance kernel to run on 1343 new Loongson-3 machines only, please say 'Y' here. 1344 1345config CPU_LOONGSON3_WORKAROUNDS 1346 bool "Old Loongson-3 LLSC Workarounds" 1347 default y if SMP 1348 depends on CPU_LOONGSON64 1349 help 1350 Loongson-3 processors have the llsc issues which require workarounds. 1351 Without workarounds the system may hang unexpectedly. 1352 1353 Newer Loongson-3 will fix these issues and no workarounds are needed. 1354 The workarounds have no significant side effect on them but may 1355 decrease the performance of the system so this option should be 1356 disabled unless the kernel is intended to be run on old systems. 1357 1358 If unsure, please say Y. 1359 1360config CPU_LOONGSON3_CPUCFG_EMULATION 1361 bool "Emulate the CPUCFG instruction on older Loongson cores" 1362 default y 1363 depends on CPU_LOONGSON64 1364 help 1365 Loongson-3A R4 and newer have the CPUCFG instruction available for 1366 userland to query CPU capabilities, much like CPUID on x86. This 1367 option provides emulation of the instruction on older Loongson 1368 cores, back to Loongson-3A1000. 1369 1370 If unsure, please say Y. 1371 1372config CPU_LOONGSON2E 1373 bool "Loongson 2E" 1374 depends on SYS_HAS_CPU_LOONGSON2E 1375 select CPU_LOONGSON2EF 1376 help 1377 The Loongson 2E processor implements the MIPS III instruction set 1378 with many extensions. 1379 1380 It has an internal FPGA northbridge, which is compatible to 1381 bonito64. 1382 1383config CPU_LOONGSON2F 1384 bool "Loongson 2F" 1385 depends on SYS_HAS_CPU_LOONGSON2F 1386 select CPU_LOONGSON2EF 1387 select GPIOLIB 1388 help 1389 The Loongson 2F processor implements the MIPS III instruction set 1390 with many extensions. 1391 1392 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1393 have a similar programming interface with FPGA northbridge used in 1394 Loongson2E. 1395 1396config CPU_LOONGSON1B 1397 bool "Loongson 1B" 1398 depends on SYS_HAS_CPU_LOONGSON1B 1399 select CPU_LOONGSON32 1400 select LEDS_GPIO_REGISTER 1401 help 1402 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1403 Release 1 instruction set and part of the MIPS32 Release 2 1404 instruction set. 1405 1406config CPU_LOONGSON1C 1407 bool "Loongson 1C" 1408 depends on SYS_HAS_CPU_LOONGSON1C 1409 select CPU_LOONGSON32 1410 select LEDS_GPIO_REGISTER 1411 help 1412 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1413 Release 1 instruction set and part of the MIPS32 Release 2 1414 instruction set. 1415 1416config CPU_MIPS32_R1 1417 bool "MIPS32 Release 1" 1418 depends on SYS_HAS_CPU_MIPS32_R1 1419 select CPU_HAS_PREFETCH 1420 select CPU_SUPPORTS_32BIT_KERNEL 1421 select CPU_SUPPORTS_HIGHMEM 1422 help 1423 Choose this option to build a kernel for release 1 or later of the 1424 MIPS32 architecture. Most modern embedded systems with a 32-bit 1425 MIPS processor are based on a MIPS32 processor. If you know the 1426 specific type of processor in your system, choose those that one 1427 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1428 Release 2 of the MIPS32 architecture is available since several 1429 years so chances are you even have a MIPS32 Release 2 processor 1430 in which case you should choose CPU_MIPS32_R2 instead for better 1431 performance. 1432 1433config CPU_MIPS32_R2 1434 bool "MIPS32 Release 2" 1435 depends on SYS_HAS_CPU_MIPS32_R2 1436 select CPU_HAS_PREFETCH 1437 select CPU_SUPPORTS_32BIT_KERNEL 1438 select CPU_SUPPORTS_HIGHMEM 1439 select CPU_SUPPORTS_MSA 1440 select HAVE_KVM 1441 help 1442 Choose this option to build a kernel for release 2 or later of the 1443 MIPS32 architecture. Most modern embedded systems with a 32-bit 1444 MIPS processor are based on a MIPS32 processor. If you know the 1445 specific type of processor in your system, choose those that one 1446 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1447 1448config CPU_MIPS32_R5 1449 bool "MIPS32 Release 5" 1450 depends on SYS_HAS_CPU_MIPS32_R5 1451 select CPU_HAS_PREFETCH 1452 select CPU_SUPPORTS_32BIT_KERNEL 1453 select CPU_SUPPORTS_HIGHMEM 1454 select CPU_SUPPORTS_MSA 1455 select HAVE_KVM 1456 select MIPS_O32_FP64_SUPPORT 1457 help 1458 Choose this option to build a kernel for release 5 or later of the 1459 MIPS32 architecture. New MIPS processors, starting with the Warrior 1460 family, are based on a MIPS32r5 processor. If you own an older 1461 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1462 1463config CPU_MIPS32_R6 1464 bool "MIPS32 Release 6" 1465 depends on SYS_HAS_CPU_MIPS32_R6 1466 select CPU_HAS_PREFETCH 1467 select CPU_NO_LOAD_STORE_LR 1468 select CPU_SUPPORTS_32BIT_KERNEL 1469 select CPU_SUPPORTS_HIGHMEM 1470 select CPU_SUPPORTS_MSA 1471 select HAVE_KVM 1472 select MIPS_O32_FP64_SUPPORT 1473 help 1474 Choose this option to build a kernel for release 6 or later of the 1475 MIPS32 architecture. New MIPS processors, starting with the Warrior 1476 family, are based on a MIPS32r6 processor. If you own an older 1477 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1478 1479config CPU_MIPS64_R1 1480 bool "MIPS64 Release 1" 1481 depends on SYS_HAS_CPU_MIPS64_R1 1482 select CPU_HAS_PREFETCH 1483 select CPU_SUPPORTS_32BIT_KERNEL 1484 select CPU_SUPPORTS_64BIT_KERNEL 1485 select CPU_SUPPORTS_HIGHMEM 1486 select CPU_SUPPORTS_HUGEPAGES 1487 help 1488 Choose this option to build a kernel for release 1 or later of the 1489 MIPS64 architecture. Many modern embedded systems with a 64-bit 1490 MIPS processor are based on a MIPS64 processor. If you know the 1491 specific type of processor in your system, choose those that one 1492 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1493 Release 2 of the MIPS64 architecture is available since several 1494 years so chances are you even have a MIPS64 Release 2 processor 1495 in which case you should choose CPU_MIPS64_R2 instead for better 1496 performance. 1497 1498config CPU_MIPS64_R2 1499 bool "MIPS64 Release 2" 1500 depends on SYS_HAS_CPU_MIPS64_R2 1501 select CPU_HAS_PREFETCH 1502 select CPU_SUPPORTS_32BIT_KERNEL 1503 select CPU_SUPPORTS_64BIT_KERNEL 1504 select CPU_SUPPORTS_HIGHMEM 1505 select CPU_SUPPORTS_HUGEPAGES 1506 select CPU_SUPPORTS_MSA 1507 select HAVE_KVM 1508 help 1509 Choose this option to build a kernel for release 2 or later of the 1510 MIPS64 architecture. Many modern embedded systems with a 64-bit 1511 MIPS processor are based on a MIPS64 processor. If you know the 1512 specific type of processor in your system, choose those that one 1513 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1514 1515config CPU_MIPS64_R5 1516 bool "MIPS64 Release 5" 1517 depends on SYS_HAS_CPU_MIPS64_R5 1518 select CPU_HAS_PREFETCH 1519 select CPU_SUPPORTS_32BIT_KERNEL 1520 select CPU_SUPPORTS_64BIT_KERNEL 1521 select CPU_SUPPORTS_HIGHMEM 1522 select CPU_SUPPORTS_HUGEPAGES 1523 select CPU_SUPPORTS_MSA 1524 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1525 select HAVE_KVM 1526 help 1527 Choose this option to build a kernel for release 5 or later of the 1528 MIPS64 architecture. This is a intermediate MIPS architecture 1529 release partly implementing release 6 features. Though there is no 1530 any hardware known to be based on this release. 1531 1532config CPU_MIPS64_R6 1533 bool "MIPS64 Release 6" 1534 depends on SYS_HAS_CPU_MIPS64_R6 1535 select CPU_HAS_PREFETCH 1536 select CPU_NO_LOAD_STORE_LR 1537 select CPU_SUPPORTS_32BIT_KERNEL 1538 select CPU_SUPPORTS_64BIT_KERNEL 1539 select CPU_SUPPORTS_HIGHMEM 1540 select CPU_SUPPORTS_HUGEPAGES 1541 select CPU_SUPPORTS_MSA 1542 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1543 select HAVE_KVM 1544 help 1545 Choose this option to build a kernel for release 6 or later of the 1546 MIPS64 architecture. New MIPS processors, starting with the Warrior 1547 family, are based on a MIPS64r6 processor. If you own an older 1548 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1549 1550config CPU_P5600 1551 bool "MIPS Warrior P5600" 1552 depends on SYS_HAS_CPU_P5600 1553 select CPU_HAS_PREFETCH 1554 select CPU_SUPPORTS_32BIT_KERNEL 1555 select CPU_SUPPORTS_HIGHMEM 1556 select CPU_SUPPORTS_MSA 1557 select CPU_SUPPORTS_CPUFREQ 1558 select CPU_MIPSR2_IRQ_VI 1559 select CPU_MIPSR2_IRQ_EI 1560 select HAVE_KVM 1561 select MIPS_O32_FP64_SUPPORT 1562 help 1563 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1564 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1565 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1566 level features like up to six P5600 calculation cores, CM2 with L2 1567 cache, IOCU/IOMMU (though might be unused depending on the system- 1568 specific IP core configuration), GIC, CPC, virtualisation module, 1569 eJTAG and PDtrace. 1570 1571config CPU_R3000 1572 bool "R3000" 1573 depends on SYS_HAS_CPU_R3000 1574 select CPU_HAS_WB 1575 select CPU_R3K_TLB 1576 select CPU_SUPPORTS_32BIT_KERNEL 1577 select CPU_SUPPORTS_HIGHMEM 1578 help 1579 Please make sure to pick the right CPU type. Linux/MIPS is not 1580 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1581 *not* work on R4000 machines and vice versa. However, since most 1582 of the supported machines have an R4000 (or similar) CPU, R4x00 1583 might be a safe bet. If the resulting kernel does not work, 1584 try to recompile with R3000. 1585 1586config CPU_TX39XX 1587 bool "R39XX" 1588 depends on SYS_HAS_CPU_TX39XX 1589 select CPU_SUPPORTS_32BIT_KERNEL 1590 select CPU_R3K_TLB 1591 1592config CPU_VR41XX 1593 bool "R41xx" 1594 depends on SYS_HAS_CPU_VR41XX 1595 select CPU_SUPPORTS_32BIT_KERNEL 1596 select CPU_SUPPORTS_64BIT_KERNEL 1597 help 1598 The options selects support for the NEC VR4100 series of processors. 1599 Only choose this option if you have one of these processors as a 1600 kernel built with this option will not run on any other type of 1601 processor or vice versa. 1602 1603config CPU_R4300 1604 bool "R4300" 1605 depends on SYS_HAS_CPU_R4300 1606 select CPU_SUPPORTS_32BIT_KERNEL 1607 select CPU_SUPPORTS_64BIT_KERNEL 1608 help 1609 MIPS Technologies R4300-series processors. 1610 1611config CPU_R4X00 1612 bool "R4x00" 1613 depends on SYS_HAS_CPU_R4X00 1614 select CPU_SUPPORTS_32BIT_KERNEL 1615 select CPU_SUPPORTS_64BIT_KERNEL 1616 select CPU_SUPPORTS_HUGEPAGES 1617 help 1618 MIPS Technologies R4000-series processors other than 4300, including 1619 the R4000, R4400, R4600, and 4700. 1620 1621config CPU_TX49XX 1622 bool "R49XX" 1623 depends on SYS_HAS_CPU_TX49XX 1624 select CPU_HAS_PREFETCH 1625 select CPU_SUPPORTS_32BIT_KERNEL 1626 select CPU_SUPPORTS_64BIT_KERNEL 1627 select CPU_SUPPORTS_HUGEPAGES 1628 1629config CPU_R5000 1630 bool "R5000" 1631 depends on SYS_HAS_CPU_R5000 1632 select CPU_SUPPORTS_32BIT_KERNEL 1633 select CPU_SUPPORTS_64BIT_KERNEL 1634 select CPU_SUPPORTS_HUGEPAGES 1635 help 1636 MIPS Technologies R5000-series processors other than the Nevada. 1637 1638config CPU_R5500 1639 bool "R5500" 1640 depends on SYS_HAS_CPU_R5500 1641 select CPU_SUPPORTS_32BIT_KERNEL 1642 select CPU_SUPPORTS_64BIT_KERNEL 1643 select CPU_SUPPORTS_HUGEPAGES 1644 help 1645 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1646 instruction set. 1647 1648config CPU_NEVADA 1649 bool "RM52xx" 1650 depends on SYS_HAS_CPU_NEVADA 1651 select CPU_SUPPORTS_32BIT_KERNEL 1652 select CPU_SUPPORTS_64BIT_KERNEL 1653 select CPU_SUPPORTS_HUGEPAGES 1654 help 1655 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1656 1657config CPU_R10000 1658 bool "R10000" 1659 depends on SYS_HAS_CPU_R10000 1660 select CPU_HAS_PREFETCH 1661 select CPU_SUPPORTS_32BIT_KERNEL 1662 select CPU_SUPPORTS_64BIT_KERNEL 1663 select CPU_SUPPORTS_HIGHMEM 1664 select CPU_SUPPORTS_HUGEPAGES 1665 help 1666 MIPS Technologies R10000-series processors. 1667 1668config CPU_RM7000 1669 bool "RM7000" 1670 depends on SYS_HAS_CPU_RM7000 1671 select CPU_HAS_PREFETCH 1672 select CPU_SUPPORTS_32BIT_KERNEL 1673 select CPU_SUPPORTS_64BIT_KERNEL 1674 select CPU_SUPPORTS_HIGHMEM 1675 select CPU_SUPPORTS_HUGEPAGES 1676 1677config CPU_SB1 1678 bool "SB1" 1679 depends on SYS_HAS_CPU_SB1 1680 select CPU_SUPPORTS_32BIT_KERNEL 1681 select CPU_SUPPORTS_64BIT_KERNEL 1682 select CPU_SUPPORTS_HIGHMEM 1683 select CPU_SUPPORTS_HUGEPAGES 1684 select WEAK_ORDERING 1685 1686config CPU_CAVIUM_OCTEON 1687 bool "Cavium Octeon processor" 1688 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1689 select CPU_HAS_PREFETCH 1690 select CPU_SUPPORTS_64BIT_KERNEL 1691 select WEAK_ORDERING 1692 select CPU_SUPPORTS_HIGHMEM 1693 select CPU_SUPPORTS_HUGEPAGES 1694 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1695 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1696 select MIPS_L1_CACHE_SHIFT_7 1697 select HAVE_KVM 1698 help 1699 The Cavium Octeon processor is a highly integrated chip containing 1700 many ethernet hardware widgets for networking tasks. The processor 1701 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1702 Full details can be found at http://www.caviumnetworks.com. 1703 1704config CPU_BMIPS 1705 bool "Broadcom BMIPS" 1706 depends on SYS_HAS_CPU_BMIPS 1707 select CPU_MIPS32 1708 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1709 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1710 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1711 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1712 select CPU_SUPPORTS_32BIT_KERNEL 1713 select DMA_NONCOHERENT 1714 select IRQ_MIPS_CPU 1715 select SWAP_IO_SPACE 1716 select WEAK_ORDERING 1717 select CPU_SUPPORTS_HIGHMEM 1718 select CPU_HAS_PREFETCH 1719 select CPU_SUPPORTS_CPUFREQ 1720 select MIPS_EXTERNAL_TIMER 1721 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 1722 help 1723 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1724 1725endchoice 1726 1727config CPU_MIPS32_3_5_FEATURES 1728 bool "MIPS32 Release 3.5 Features" 1729 depends on SYS_HAS_CPU_MIPS32_R3_5 1730 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1731 CPU_P5600 1732 help 1733 Choose this option to build a kernel for release 2 or later of the 1734 MIPS32 architecture including features from the 3.5 release such as 1735 support for Enhanced Virtual Addressing (EVA). 1736 1737config CPU_MIPS32_3_5_EVA 1738 bool "Enhanced Virtual Addressing (EVA)" 1739 depends on CPU_MIPS32_3_5_FEATURES 1740 select EVA 1741 default y 1742 help 1743 Choose this option if you want to enable the Enhanced Virtual 1744 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1745 One of its primary benefits is an increase in the maximum size 1746 of lowmem (up to 3GB). If unsure, say 'N' here. 1747 1748config CPU_MIPS32_R5_FEATURES 1749 bool "MIPS32 Release 5 Features" 1750 depends on SYS_HAS_CPU_MIPS32_R5 1751 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1752 help 1753 Choose this option to build a kernel for release 2 or later of the 1754 MIPS32 architecture including features from release 5 such as 1755 support for Extended Physical Addressing (XPA). 1756 1757config CPU_MIPS32_R5_XPA 1758 bool "Extended Physical Addressing (XPA)" 1759 depends on CPU_MIPS32_R5_FEATURES 1760 depends on !EVA 1761 depends on !PAGE_SIZE_4KB 1762 depends on SYS_SUPPORTS_HIGHMEM 1763 select XPA 1764 select HIGHMEM 1765 select PHYS_ADDR_T_64BIT 1766 default n 1767 help 1768 Choose this option if you want to enable the Extended Physical 1769 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1770 benefit is to increase physical addressing equal to or greater 1771 than 40 bits. Note that this has the side effect of turning on 1772 64-bit addressing which in turn makes the PTEs 64-bit in size. 1773 If unsure, say 'N' here. 1774 1775if CPU_LOONGSON2F 1776config CPU_NOP_WORKAROUNDS 1777 bool 1778 1779config CPU_JUMP_WORKAROUNDS 1780 bool 1781 1782config CPU_LOONGSON2F_WORKAROUNDS 1783 bool "Loongson 2F Workarounds" 1784 default y 1785 select CPU_NOP_WORKAROUNDS 1786 select CPU_JUMP_WORKAROUNDS 1787 help 1788 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1789 require workarounds. Without workarounds the system may hang 1790 unexpectedly. For more information please refer to the gas 1791 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1792 1793 Loongson 2F03 and later have fixed these issues and no workarounds 1794 are needed. The workarounds have no significant side effect on them 1795 but may decrease the performance of the system so this option should 1796 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1797 systems. 1798 1799 If unsure, please say Y. 1800endif # CPU_LOONGSON2F 1801 1802config SYS_SUPPORTS_ZBOOT 1803 bool 1804 select HAVE_KERNEL_GZIP 1805 select HAVE_KERNEL_BZIP2 1806 select HAVE_KERNEL_LZ4 1807 select HAVE_KERNEL_LZMA 1808 select HAVE_KERNEL_LZO 1809 select HAVE_KERNEL_XZ 1810 select HAVE_KERNEL_ZSTD 1811 1812config SYS_SUPPORTS_ZBOOT_UART16550 1813 bool 1814 select SYS_SUPPORTS_ZBOOT 1815 1816config SYS_SUPPORTS_ZBOOT_UART_PROM 1817 bool 1818 select SYS_SUPPORTS_ZBOOT 1819 1820config CPU_LOONGSON2EF 1821 bool 1822 select CPU_SUPPORTS_32BIT_KERNEL 1823 select CPU_SUPPORTS_64BIT_KERNEL 1824 select CPU_SUPPORTS_HIGHMEM 1825 select CPU_SUPPORTS_HUGEPAGES 1826 select ARCH_HAS_PHYS_TO_DMA 1827 1828config CPU_LOONGSON32 1829 bool 1830 select CPU_MIPS32 1831 select CPU_MIPSR2 1832 select CPU_HAS_PREFETCH 1833 select CPU_SUPPORTS_32BIT_KERNEL 1834 select CPU_SUPPORTS_HIGHMEM 1835 select CPU_SUPPORTS_CPUFREQ 1836 1837config CPU_BMIPS32_3300 1838 select SMP_UP if SMP 1839 bool 1840 1841config CPU_BMIPS4350 1842 bool 1843 select SYS_SUPPORTS_SMP 1844 select SYS_SUPPORTS_HOTPLUG_CPU 1845 1846config CPU_BMIPS4380 1847 bool 1848 select MIPS_L1_CACHE_SHIFT_6 1849 select SYS_SUPPORTS_SMP 1850 select SYS_SUPPORTS_HOTPLUG_CPU 1851 select CPU_HAS_RIXI 1852 1853config CPU_BMIPS5000 1854 bool 1855 select MIPS_CPU_SCACHE 1856 select MIPS_L1_CACHE_SHIFT_7 1857 select SYS_SUPPORTS_SMP 1858 select SYS_SUPPORTS_HOTPLUG_CPU 1859 select CPU_HAS_RIXI 1860 1861config SYS_HAS_CPU_LOONGSON64 1862 bool 1863 select CPU_SUPPORTS_CPUFREQ 1864 select CPU_HAS_RIXI 1865 1866config SYS_HAS_CPU_LOONGSON2E 1867 bool 1868 1869config SYS_HAS_CPU_LOONGSON2F 1870 bool 1871 select CPU_SUPPORTS_CPUFREQ 1872 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1873 1874config SYS_HAS_CPU_LOONGSON1B 1875 bool 1876 1877config SYS_HAS_CPU_LOONGSON1C 1878 bool 1879 1880config SYS_HAS_CPU_MIPS32_R1 1881 bool 1882 1883config SYS_HAS_CPU_MIPS32_R2 1884 bool 1885 1886config SYS_HAS_CPU_MIPS32_R3_5 1887 bool 1888 1889config SYS_HAS_CPU_MIPS32_R5 1890 bool 1891 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1892 1893config SYS_HAS_CPU_MIPS32_R6 1894 bool 1895 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1896 1897config SYS_HAS_CPU_MIPS64_R1 1898 bool 1899 1900config SYS_HAS_CPU_MIPS64_R2 1901 bool 1902 1903config SYS_HAS_CPU_MIPS64_R5 1904 bool 1905 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1906 1907config SYS_HAS_CPU_MIPS64_R6 1908 bool 1909 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1910 1911config SYS_HAS_CPU_P5600 1912 bool 1913 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1914 1915config SYS_HAS_CPU_R3000 1916 bool 1917 1918config SYS_HAS_CPU_TX39XX 1919 bool 1920 1921config SYS_HAS_CPU_VR41XX 1922 bool 1923 1924config SYS_HAS_CPU_R4300 1925 bool 1926 1927config SYS_HAS_CPU_R4X00 1928 bool 1929 1930config SYS_HAS_CPU_TX49XX 1931 bool 1932 1933config SYS_HAS_CPU_R5000 1934 bool 1935 1936config SYS_HAS_CPU_R5500 1937 bool 1938 1939config SYS_HAS_CPU_NEVADA 1940 bool 1941 1942config SYS_HAS_CPU_R10000 1943 bool 1944 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1945 1946config SYS_HAS_CPU_RM7000 1947 bool 1948 1949config SYS_HAS_CPU_SB1 1950 bool 1951 1952config SYS_HAS_CPU_CAVIUM_OCTEON 1953 bool 1954 1955config SYS_HAS_CPU_BMIPS 1956 bool 1957 1958config SYS_HAS_CPU_BMIPS32_3300 1959 bool 1960 select SYS_HAS_CPU_BMIPS 1961 1962config SYS_HAS_CPU_BMIPS4350 1963 bool 1964 select SYS_HAS_CPU_BMIPS 1965 1966config SYS_HAS_CPU_BMIPS4380 1967 bool 1968 select SYS_HAS_CPU_BMIPS 1969 1970config SYS_HAS_CPU_BMIPS5000 1971 bool 1972 select SYS_HAS_CPU_BMIPS 1973 select ARCH_HAS_SYNC_DMA_FOR_CPU 1974 1975# 1976# CPU may reorder R->R, R->W, W->R, W->W 1977# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 1978# 1979config WEAK_ORDERING 1980 bool 1981 1982# 1983# CPU may reorder reads and writes beyond LL/SC 1984# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 1985# 1986config WEAK_REORDERING_BEYOND_LLSC 1987 bool 1988endmenu 1989 1990# 1991# These two indicate any level of the MIPS32 and MIPS64 architecture 1992# 1993config CPU_MIPS32 1994 bool 1995 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 1996 CPU_MIPS32_R6 || CPU_P5600 1997 1998config CPU_MIPS64 1999 bool 2000 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2001 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON 2002 2003# 2004# These indicate the revision of the architecture 2005# 2006config CPU_MIPSR1 2007 bool 2008 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2009 2010config CPU_MIPSR2 2011 bool 2012 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2013 select CPU_HAS_RIXI 2014 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2015 select MIPS_SPRAM 2016 2017config CPU_MIPSR5 2018 bool 2019 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2020 select CPU_HAS_RIXI 2021 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2022 select MIPS_SPRAM 2023 2024config CPU_MIPSR6 2025 bool 2026 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2027 select CPU_HAS_RIXI 2028 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2029 select HAVE_ARCH_BITREVERSE 2030 select MIPS_ASID_BITS_VARIABLE 2031 select MIPS_CRC_SUPPORT 2032 select MIPS_SPRAM 2033 2034config TARGET_ISA_REV 2035 int 2036 default 1 if CPU_MIPSR1 2037 default 2 if CPU_MIPSR2 2038 default 5 if CPU_MIPSR5 2039 default 6 if CPU_MIPSR6 2040 default 0 2041 help 2042 Reflects the ISA revision being targeted by the kernel build. This 2043 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2044 2045config EVA 2046 bool 2047 2048config XPA 2049 bool 2050 2051config SYS_SUPPORTS_32BIT_KERNEL 2052 bool 2053config SYS_SUPPORTS_64BIT_KERNEL 2054 bool 2055config CPU_SUPPORTS_32BIT_KERNEL 2056 bool 2057config CPU_SUPPORTS_64BIT_KERNEL 2058 bool 2059config CPU_SUPPORTS_CPUFREQ 2060 bool 2061config CPU_SUPPORTS_ADDRWINCFG 2062 bool 2063config CPU_SUPPORTS_HUGEPAGES 2064 bool 2065 depends on !(32BIT && (PHYS_ADDR_T_64BIT || EVA)) 2066config MIPS_PGD_C0_CONTEXT 2067 bool 2068 depends on 64BIT 2069 default y if (CPU_MIPSR2 || CPU_MIPSR6) 2070 2071# 2072# Set to y for ptrace access to watch registers. 2073# 2074config HARDWARE_WATCHPOINTS 2075 bool 2076 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2077 2078menu "Kernel type" 2079 2080choice 2081 prompt "Kernel code model" 2082 help 2083 You should only select this option if you have a workload that 2084 actually benefits from 64-bit processing or if your machine has 2085 large memory. You will only be presented a single option in this 2086 menu if your system does not support both 32-bit and 64-bit kernels. 2087 2088config 32BIT 2089 bool "32-bit kernel" 2090 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2091 select TRAD_SIGNALS 2092 help 2093 Select this option if you want to build a 32-bit kernel. 2094 2095config 64BIT 2096 bool "64-bit kernel" 2097 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2098 help 2099 Select this option if you want to build a 64-bit kernel. 2100 2101endchoice 2102 2103config MIPS_VA_BITS_48 2104 bool "48 bits virtual memory" 2105 depends on 64BIT 2106 help 2107 Support a maximum at least 48 bits of application virtual 2108 memory. Default is 40 bits or less, depending on the CPU. 2109 For page sizes 16k and above, this option results in a small 2110 memory overhead for page tables. For 4k page size, a fourth 2111 level of page tables is added which imposes both a memory 2112 overhead as well as slower TLB fault handling. 2113 2114 If unsure, say N. 2115 2116config ZBOOT_LOAD_ADDRESS 2117 hex "Compressed kernel load address" 2118 default 0xffffffff80400000 if BCM47XX 2119 default 0x0 2120 depends on SYS_SUPPORTS_ZBOOT 2121 help 2122 The address to load compressed kernel, aka vmlinuz. 2123 2124 This is only used if non-zero. 2125 2126choice 2127 prompt "Kernel page size" 2128 default PAGE_SIZE_4KB 2129 2130config PAGE_SIZE_4KB 2131 bool "4kB" 2132 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2133 help 2134 This option select the standard 4kB Linux page size. On some 2135 R3000-family processors this is the only available page size. Using 2136 4kB page size will minimize memory consumption and is therefore 2137 recommended for low memory systems. 2138 2139config PAGE_SIZE_8KB 2140 bool "8kB" 2141 depends on CPU_CAVIUM_OCTEON 2142 depends on !MIPS_VA_BITS_48 2143 help 2144 Using 8kB page size will result in higher performance kernel at 2145 the price of higher memory consumption. This option is available 2146 only on cnMIPS processors. Note that you will need a suitable Linux 2147 distribution to support this. 2148 2149config PAGE_SIZE_16KB 2150 bool "16kB" 2151 depends on !CPU_R3000 && !CPU_TX39XX 2152 help 2153 Using 16kB page size will result in higher performance kernel at 2154 the price of higher memory consumption. This option is available on 2155 all non-R3000 family processors. Note that you will need a suitable 2156 Linux distribution to support this. 2157 2158config PAGE_SIZE_32KB 2159 bool "32kB" 2160 depends on CPU_CAVIUM_OCTEON 2161 depends on !MIPS_VA_BITS_48 2162 help 2163 Using 32kB page size will result in higher performance kernel at 2164 the price of higher memory consumption. This option is available 2165 only on cnMIPS cores. Note that you will need a suitable Linux 2166 distribution to support this. 2167 2168config PAGE_SIZE_64KB 2169 bool "64kB" 2170 depends on !CPU_R3000 && !CPU_TX39XX 2171 help 2172 Using 64kB page size will result in higher performance kernel at 2173 the price of higher memory consumption. This option is available on 2174 all non-R3000 family processor. Not that at the time of this 2175 writing this option is still high experimental. 2176 2177endchoice 2178 2179config FORCE_MAX_ZONEORDER 2180 int "Maximum zone order" 2181 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2182 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2183 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2184 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2185 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2186 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2187 range 0 64 2188 default "11" 2189 help 2190 The kernel memory allocator divides physically contiguous memory 2191 blocks into "zones", where each zone is a power of two number of 2192 pages. This option selects the largest power of two that the kernel 2193 keeps in the memory allocator. If you need to allocate very large 2194 blocks of physically contiguous memory, then you may need to 2195 increase this value. 2196 2197 This config option is actually maximum order plus one. For example, 2198 a value of 11 means that the largest free memory block is 2^10 pages. 2199 2200 The page size is not necessarily 4KB. Keep this in mind 2201 when choosing a value for this option. 2202 2203config BOARD_SCACHE 2204 bool 2205 2206config IP22_CPU_SCACHE 2207 bool 2208 select BOARD_SCACHE 2209 2210# 2211# Support for a MIPS32 / MIPS64 style S-caches 2212# 2213config MIPS_CPU_SCACHE 2214 bool 2215 select BOARD_SCACHE 2216 2217config R5000_CPU_SCACHE 2218 bool 2219 select BOARD_SCACHE 2220 2221config RM7000_CPU_SCACHE 2222 bool 2223 select BOARD_SCACHE 2224 2225config SIBYTE_DMA_PAGEOPS 2226 bool "Use DMA to clear/copy pages" 2227 depends on CPU_SB1 2228 help 2229 Instead of using the CPU to zero and copy pages, use a Data Mover 2230 channel. These DMA channels are otherwise unused by the standard 2231 SiByte Linux port. Seems to give a small performance benefit. 2232 2233config CPU_HAS_PREFETCH 2234 bool 2235 2236config CPU_GENERIC_DUMP_TLB 2237 bool 2238 default y if !(CPU_R3000 || CPU_TX39XX) 2239 2240config MIPS_FP_SUPPORT 2241 bool "Floating Point support" if EXPERT 2242 default y 2243 help 2244 Select y to include support for floating point in the kernel 2245 including initialization of FPU hardware, FP context save & restore 2246 and emulation of an FPU where necessary. Without this support any 2247 userland program attempting to use floating point instructions will 2248 receive a SIGILL. 2249 2250 If you know that your userland will not attempt to use floating point 2251 instructions then you can say n here to shrink the kernel a little. 2252 2253 If unsure, say y. 2254 2255config CPU_R2300_FPU 2256 bool 2257 depends on MIPS_FP_SUPPORT 2258 default y if CPU_R3000 || CPU_TX39XX 2259 2260config CPU_R3K_TLB 2261 bool 2262 2263config CPU_R4K_FPU 2264 bool 2265 depends on MIPS_FP_SUPPORT 2266 default y if !CPU_R2300_FPU 2267 2268config CPU_R4K_CACHE_TLB 2269 bool 2270 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2271 2272config MIPS_MT_SMP 2273 bool "MIPS MT SMP support (1 TC on each available VPE)" 2274 default y 2275 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2276 select CPU_MIPSR2_IRQ_VI 2277 select CPU_MIPSR2_IRQ_EI 2278 select SYNC_R4K 2279 select MIPS_MT 2280 select SMP 2281 select SMP_UP 2282 select SYS_SUPPORTS_SMP 2283 select SYS_SUPPORTS_SCHED_SMT 2284 select MIPS_PERF_SHARED_TC_COUNTERS 2285 help 2286 This is a kernel model which is known as SMVP. This is supported 2287 on cores with the MT ASE and uses the available VPEs to implement 2288 virtual processors which supports SMP. This is equivalent to the 2289 Intel Hyperthreading feature. For further information go to 2290 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2291 2292config MIPS_MT 2293 bool 2294 2295config SCHED_SMT 2296 bool "SMT (multithreading) scheduler support" 2297 depends on SYS_SUPPORTS_SCHED_SMT 2298 default n 2299 help 2300 SMT scheduler support improves the CPU scheduler's decision making 2301 when dealing with MIPS MT enabled cores at a cost of slightly 2302 increased overhead in some places. If unsure say N here. 2303 2304config SYS_SUPPORTS_SCHED_SMT 2305 bool 2306 2307config SYS_SUPPORTS_MULTITHREADING 2308 bool 2309 2310config MIPS_MT_FPAFF 2311 bool "Dynamic FPU affinity for FP-intensive threads" 2312 default y 2313 depends on MIPS_MT_SMP 2314 2315config MIPSR2_TO_R6_EMULATOR 2316 bool "MIPS R2-to-R6 emulator" 2317 depends on CPU_MIPSR6 2318 depends on MIPS_FP_SUPPORT 2319 default y 2320 help 2321 Choose this option if you want to run non-R6 MIPS userland code. 2322 Even if you say 'Y' here, the emulator will still be disabled by 2323 default. You can enable it using the 'mipsr2emu' kernel option. 2324 The only reason this is a build-time option is to save ~14K from the 2325 final kernel image. 2326 2327config SYS_SUPPORTS_VPE_LOADER 2328 bool 2329 depends on SYS_SUPPORTS_MULTITHREADING 2330 help 2331 Indicates that the platform supports the VPE loader, and provides 2332 physical_memsize. 2333 2334config MIPS_VPE_LOADER 2335 bool "VPE loader support." 2336 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2337 select CPU_MIPSR2_IRQ_VI 2338 select CPU_MIPSR2_IRQ_EI 2339 select MIPS_MT 2340 help 2341 Includes a loader for loading an elf relocatable object 2342 onto another VPE and running it. 2343 2344config MIPS_VPE_LOADER_CMP 2345 bool 2346 default "y" 2347 depends on MIPS_VPE_LOADER && MIPS_CMP 2348 2349config MIPS_VPE_LOADER_MT 2350 bool 2351 default "y" 2352 depends on MIPS_VPE_LOADER && !MIPS_CMP 2353 2354config MIPS_VPE_LOADER_TOM 2355 bool "Load VPE program into memory hidden from linux" 2356 depends on MIPS_VPE_LOADER 2357 default y 2358 help 2359 The loader can use memory that is present but has been hidden from 2360 Linux using the kernel command line option "mem=xxMB". It's up to 2361 you to ensure the amount you put in the option and the space your 2362 program requires is less or equal to the amount physically present. 2363 2364config MIPS_VPE_APSP_API 2365 bool "Enable support for AP/SP API (RTLX)" 2366 depends on MIPS_VPE_LOADER 2367 2368config MIPS_VPE_APSP_API_CMP 2369 bool 2370 default "y" 2371 depends on MIPS_VPE_APSP_API && MIPS_CMP 2372 2373config MIPS_VPE_APSP_API_MT 2374 bool 2375 default "y" 2376 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2377 2378config MIPS_CMP 2379 bool "MIPS CMP framework support (DEPRECATED)" 2380 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2381 select SMP 2382 select SYNC_R4K 2383 select SYS_SUPPORTS_SMP 2384 select WEAK_ORDERING 2385 default n 2386 help 2387 Select this if you are using a bootloader which implements the "CMP 2388 framework" protocol (ie. YAMON) and want your kernel to make use of 2389 its ability to start secondary CPUs. 2390 2391 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2392 instead of this. 2393 2394config MIPS_CPS 2395 bool "MIPS Coherent Processing System support" 2396 depends on SYS_SUPPORTS_MIPS_CPS 2397 select MIPS_CM 2398 select MIPS_CPS_PM if HOTPLUG_CPU 2399 select SMP 2400 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2401 select SYS_SUPPORTS_HOTPLUG_CPU 2402 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2403 select SYS_SUPPORTS_SMP 2404 select WEAK_ORDERING 2405 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 2406 help 2407 Select this if you wish to run an SMP kernel across multiple cores 2408 within a MIPS Coherent Processing System. When this option is 2409 enabled the kernel will probe for other cores and boot them with 2410 no external assistance. It is safe to enable this when hardware 2411 support is unavailable. 2412 2413config MIPS_CPS_PM 2414 depends on MIPS_CPS 2415 bool 2416 2417config MIPS_CM 2418 bool 2419 select MIPS_CPC 2420 2421config MIPS_CPC 2422 bool 2423 2424config SB1_PASS_2_WORKAROUNDS 2425 bool 2426 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2427 default y 2428 2429config SB1_PASS_2_1_WORKAROUNDS 2430 bool 2431 depends on CPU_SB1 && CPU_SB1_PASS_2 2432 default y 2433 2434choice 2435 prompt "SmartMIPS or microMIPS ASE support" 2436 2437config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2438 bool "None" 2439 help 2440 Select this if you want neither microMIPS nor SmartMIPS support 2441 2442config CPU_HAS_SMARTMIPS 2443 depends on SYS_SUPPORTS_SMARTMIPS 2444 bool "SmartMIPS" 2445 help 2446 SmartMIPS is a extension of the MIPS32 architecture aimed at 2447 increased security at both hardware and software level for 2448 smartcards. Enabling this option will allow proper use of the 2449 SmartMIPS instructions by Linux applications. However a kernel with 2450 this option will not work on a MIPS core without SmartMIPS core. If 2451 you don't know you probably don't have SmartMIPS and should say N 2452 here. 2453 2454config CPU_MICROMIPS 2455 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2456 bool "microMIPS" 2457 help 2458 When this option is enabled the kernel will be built using the 2459 microMIPS ISA 2460 2461endchoice 2462 2463config CPU_HAS_MSA 2464 bool "Support for the MIPS SIMD Architecture" 2465 depends on CPU_SUPPORTS_MSA 2466 depends on MIPS_FP_SUPPORT 2467 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2468 help 2469 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2470 and a set of SIMD instructions to operate on them. When this option 2471 is enabled the kernel will support allocating & switching MSA 2472 vector register contexts. If you know that your kernel will only be 2473 running on CPUs which do not support MSA or that your userland will 2474 not be making use of it then you may wish to say N here to reduce 2475 the size & complexity of your kernel. 2476 2477 If unsure, say Y. 2478 2479config CPU_HAS_WB 2480 bool 2481 2482config XKS01 2483 bool 2484 2485config CPU_HAS_DIEI 2486 depends on !CPU_DIEI_BROKEN 2487 bool 2488 2489config CPU_DIEI_BROKEN 2490 bool 2491 2492config CPU_HAS_RIXI 2493 bool 2494 2495config CPU_NO_LOAD_STORE_LR 2496 bool 2497 help 2498 CPU lacks support for unaligned load and store instructions: 2499 LWL, LWR, SWL, SWR (Load/store word left/right). 2500 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2501 systems). 2502 2503# 2504# Vectored interrupt mode is an R2 feature 2505# 2506config CPU_MIPSR2_IRQ_VI 2507 bool 2508 2509# 2510# Extended interrupt mode is an R2 feature 2511# 2512config CPU_MIPSR2_IRQ_EI 2513 bool 2514 2515config CPU_HAS_SYNC 2516 bool 2517 depends on !CPU_R3000 2518 default y 2519 2520# 2521# CPU non-features 2522# 2523config CPU_DADDI_WORKAROUNDS 2524 bool 2525 2526config CPU_R4000_WORKAROUNDS 2527 bool 2528 select CPU_R4400_WORKAROUNDS 2529 2530config CPU_R4400_WORKAROUNDS 2531 bool 2532 2533config CPU_R4X00_BUGS64 2534 bool 2535 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2536 2537config MIPS_ASID_SHIFT 2538 int 2539 default 6 if CPU_R3000 || CPU_TX39XX 2540 default 0 2541 2542config MIPS_ASID_BITS 2543 int 2544 default 0 if MIPS_ASID_BITS_VARIABLE 2545 default 6 if CPU_R3000 || CPU_TX39XX 2546 default 8 2547 2548config MIPS_ASID_BITS_VARIABLE 2549 bool 2550 2551config MIPS_CRC_SUPPORT 2552 bool 2553 2554# R4600 erratum. Due to the lack of errata information the exact 2555# technical details aren't known. I've experimentally found that disabling 2556# interrupts during indexed I-cache flushes seems to be sufficient to deal 2557# with the issue. 2558config WAR_R4600_V1_INDEX_ICACHEOP 2559 bool 2560 2561# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2562# 2563# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2564# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2565# executed if there is no other dcache activity. If the dcache is 2566# accessed for another instruction immediately preceding when these 2567# cache instructions are executing, it is possible that the dcache 2568# tag match outputs used by these cache instructions will be 2569# incorrect. These cache instructions should be preceded by at least 2570# four instructions that are not any kind of load or store 2571# instruction. 2572# 2573# This is not allowed: lw 2574# nop 2575# nop 2576# nop 2577# cache Hit_Writeback_Invalidate_D 2578# 2579# This is allowed: lw 2580# nop 2581# nop 2582# nop 2583# nop 2584# cache Hit_Writeback_Invalidate_D 2585config WAR_R4600_V1_HIT_CACHEOP 2586 bool 2587 2588# Writeback and invalidate the primary cache dcache before DMA. 2589# 2590# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2591# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2592# operate correctly if the internal data cache refill buffer is empty. These 2593# CACHE instructions should be separated from any potential data cache miss 2594# by a load instruction to an uncached address to empty the response buffer." 2595# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2596# in .pdf format.) 2597config WAR_R4600_V2_HIT_CACHEOP 2598 bool 2599 2600# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2601# the line which this instruction itself exists, the following 2602# operation is not guaranteed." 2603# 2604# Workaround: do two phase flushing for Index_Invalidate_I 2605config WAR_TX49XX_ICACHE_INDEX_INV 2606 bool 2607 2608# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2609# opposes it being called that) where invalid instructions in the same 2610# I-cache line worth of instructions being fetched may case spurious 2611# exceptions. 2612config WAR_ICACHE_REFILLS 2613 bool 2614 2615# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2616# may cause ll / sc and lld / scd sequences to execute non-atomically. 2617config WAR_R10000_LLSC 2618 bool 2619 2620# 34K core erratum: "Problems Executing the TLBR Instruction" 2621config WAR_MIPS34K_MISSED_ITLB 2622 bool 2623 2624# 2625# - Highmem only makes sense for the 32-bit kernel. 2626# - The current highmem code will only work properly on physically indexed 2627# caches such as R3000, SB1, R7000 or those that look like they're virtually 2628# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2629# moment we protect the user and offer the highmem option only on machines 2630# where it's known to be safe. This will not offer highmem on a few systems 2631# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2632# indexed CPUs but we're playing safe. 2633# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2634# know they might have memory configurations that could make use of highmem 2635# support. 2636# 2637config HIGHMEM 2638 bool "High Memory Support" 2639 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2640 select KMAP_LOCAL 2641 2642config CPU_SUPPORTS_HIGHMEM 2643 bool 2644 2645config SYS_SUPPORTS_HIGHMEM 2646 bool 2647 2648config SYS_SUPPORTS_SMARTMIPS 2649 bool 2650 2651config SYS_SUPPORTS_MICROMIPS 2652 bool 2653 2654config SYS_SUPPORTS_MIPS16 2655 bool 2656 help 2657 This option must be set if a kernel might be executed on a MIPS16- 2658 enabled CPU even if MIPS16 is not actually being used. In other 2659 words, it makes the kernel MIPS16-tolerant. 2660 2661config CPU_SUPPORTS_MSA 2662 bool 2663 2664config ARCH_FLATMEM_ENABLE 2665 def_bool y 2666 depends on !NUMA && !CPU_LOONGSON2EF 2667 2668config ARCH_SPARSEMEM_ENABLE 2669 bool 2670 select SPARSEMEM_STATIC if !SGI_IP27 2671 2672config NUMA 2673 bool "NUMA Support" 2674 depends on SYS_SUPPORTS_NUMA 2675 select SMP 2676 select HAVE_SETUP_PER_CPU_AREA 2677 select NEED_PER_CPU_EMBED_FIRST_CHUNK 2678 help 2679 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2680 Access). This option improves performance on systems with more 2681 than two nodes; on two node systems it is generally better to 2682 leave it disabled; on single node systems leave this option 2683 disabled. 2684 2685config SYS_SUPPORTS_NUMA 2686 bool 2687 2688config RELOCATABLE 2689 bool "Relocatable kernel" 2690 depends on SYS_SUPPORTS_RELOCATABLE 2691 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2692 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2693 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2694 CPU_P5600 || CAVIUM_OCTEON_SOC || \ 2695 CPU_LOONGSON64 2696 help 2697 This builds a kernel image that retains relocation information 2698 so it can be loaded someplace besides the default 1MB. 2699 The relocations make the kernel binary about 15% larger, 2700 but are discarded at runtime 2701 2702config RELOCATION_TABLE_SIZE 2703 hex "Relocation table size" 2704 depends on RELOCATABLE 2705 range 0x0 0x01000000 2706 default "0x00200000" if CPU_LOONGSON64 2707 default "0x00100000" 2708 help 2709 A table of relocation data will be appended to the kernel binary 2710 and parsed at boot to fix up the relocated kernel. 2711 2712 This option allows the amount of space reserved for the table to be 2713 adjusted, although the default of 1Mb should be ok in most cases. 2714 2715 The build will fail and a valid size suggested if this is too small. 2716 2717 If unsure, leave at the default value. 2718 2719config RANDOMIZE_BASE 2720 bool "Randomize the address of the kernel image" 2721 depends on RELOCATABLE 2722 help 2723 Randomizes the physical and virtual address at which the 2724 kernel image is loaded, as a security feature that 2725 deters exploit attempts relying on knowledge of the location 2726 of kernel internals. 2727 2728 Entropy is generated using any coprocessor 0 registers available. 2729 2730 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2731 2732 If unsure, say N. 2733 2734config RANDOMIZE_BASE_MAX_OFFSET 2735 hex "Maximum kASLR offset" if EXPERT 2736 depends on RANDOMIZE_BASE 2737 range 0x0 0x40000000 if EVA || 64BIT 2738 range 0x0 0x08000000 2739 default "0x01000000" 2740 help 2741 When kASLR is active, this provides the maximum offset that will 2742 be applied to the kernel image. It should be set according to the 2743 amount of physical RAM available in the target system minus 2744 PHYSICAL_START and must be a power of 2. 2745 2746 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2747 EVA or 64-bit. The default is 16Mb. 2748 2749config NODES_SHIFT 2750 int 2751 default "6" 2752 depends on NUMA 2753 2754config HW_PERF_EVENTS 2755 bool "Enable hardware performance counter support for perf events" 2756 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_LOONGSON64) 2757 default y 2758 help 2759 Enable hardware performance counter support for perf events. If 2760 disabled, perf events will use software events only. 2761 2762config DMI 2763 bool "Enable DMI scanning" 2764 depends on MACH_LOONGSON64 2765 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2766 default y 2767 help 2768 Enabled scanning of DMI to identify machine quirks. Say Y 2769 here unless you have verified that your setup is not 2770 affected by entries in the DMI blacklist. Required by PNP 2771 BIOS code. 2772 2773config SMP 2774 bool "Multi-Processing support" 2775 depends on SYS_SUPPORTS_SMP 2776 help 2777 This enables support for systems with more than one CPU. If you have 2778 a system with only one CPU, say N. If you have a system with more 2779 than one CPU, say Y. 2780 2781 If you say N here, the kernel will run on uni- and multiprocessor 2782 machines, but will use only one CPU of a multiprocessor machine. If 2783 you say Y here, the kernel will run on many, but not all, 2784 uniprocessor machines. On a uniprocessor machine, the kernel 2785 will run faster if you say N here. 2786 2787 People using multiprocessor machines who say Y here should also say 2788 Y to "Enhanced Real Time Clock Support", below. 2789 2790 See also the SMP-HOWTO available at 2791 <https://www.tldp.org/docs.html#howto>. 2792 2793 If you don't know what to do here, say N. 2794 2795config HOTPLUG_CPU 2796 bool "Support for hot-pluggable CPUs" 2797 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2798 help 2799 Say Y here to allow turning CPUs off and on. CPUs can be 2800 controlled through /sys/devices/system/cpu. 2801 (Note: power management support will enable this option 2802 automatically on SMP systems. ) 2803 Say N if you want to disable CPU hotplug. 2804 2805config SMP_UP 2806 bool 2807 2808config SYS_SUPPORTS_MIPS_CMP 2809 bool 2810 2811config SYS_SUPPORTS_MIPS_CPS 2812 bool 2813 2814config SYS_SUPPORTS_SMP 2815 bool 2816 2817config NR_CPUS_DEFAULT_4 2818 bool 2819 2820config NR_CPUS_DEFAULT_8 2821 bool 2822 2823config NR_CPUS_DEFAULT_16 2824 bool 2825 2826config NR_CPUS_DEFAULT_32 2827 bool 2828 2829config NR_CPUS_DEFAULT_64 2830 bool 2831 2832config NR_CPUS 2833 int "Maximum number of CPUs (2-256)" 2834 range 2 256 2835 depends on SMP 2836 default "4" if NR_CPUS_DEFAULT_4 2837 default "8" if NR_CPUS_DEFAULT_8 2838 default "16" if NR_CPUS_DEFAULT_16 2839 default "32" if NR_CPUS_DEFAULT_32 2840 default "64" if NR_CPUS_DEFAULT_64 2841 help 2842 This allows you to specify the maximum number of CPUs which this 2843 kernel will support. The maximum supported value is 32 for 32-bit 2844 kernel and 64 for 64-bit kernels; the minimum value which makes 2845 sense is 1 for Qemu (useful only for kernel debugging purposes) 2846 and 2 for all others. 2847 2848 This is purely to save memory - each supported CPU adds 2849 approximately eight kilobytes to the kernel image. For best 2850 performance should round up your number of processors to the next 2851 power of two. 2852 2853config MIPS_PERF_SHARED_TC_COUNTERS 2854 bool 2855 2856config MIPS_NR_CPU_NR_MAP_1024 2857 bool 2858 2859config MIPS_NR_CPU_NR_MAP 2860 int 2861 depends on SMP 2862 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2863 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2864 2865# 2866# Timer Interrupt Frequency Configuration 2867# 2868 2869choice 2870 prompt "Timer frequency" 2871 default HZ_250 2872 help 2873 Allows the configuration of the timer frequency. 2874 2875 config HZ_24 2876 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2877 2878 config HZ_48 2879 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 2880 2881 config HZ_100 2882 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 2883 2884 config HZ_128 2885 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 2886 2887 config HZ_250 2888 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 2889 2890 config HZ_256 2891 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 2892 2893 config HZ_1000 2894 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 2895 2896 config HZ_1024 2897 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 2898 2899endchoice 2900 2901config SYS_SUPPORTS_24HZ 2902 bool 2903 2904config SYS_SUPPORTS_48HZ 2905 bool 2906 2907config SYS_SUPPORTS_100HZ 2908 bool 2909 2910config SYS_SUPPORTS_128HZ 2911 bool 2912 2913config SYS_SUPPORTS_250HZ 2914 bool 2915 2916config SYS_SUPPORTS_256HZ 2917 bool 2918 2919config SYS_SUPPORTS_1000HZ 2920 bool 2921 2922config SYS_SUPPORTS_1024HZ 2923 bool 2924 2925config SYS_SUPPORTS_ARBIT_HZ 2926 bool 2927 default y if !SYS_SUPPORTS_24HZ && \ 2928 !SYS_SUPPORTS_48HZ && \ 2929 !SYS_SUPPORTS_100HZ && \ 2930 !SYS_SUPPORTS_128HZ && \ 2931 !SYS_SUPPORTS_250HZ && \ 2932 !SYS_SUPPORTS_256HZ && \ 2933 !SYS_SUPPORTS_1000HZ && \ 2934 !SYS_SUPPORTS_1024HZ 2935 2936config HZ 2937 int 2938 default 24 if HZ_24 2939 default 48 if HZ_48 2940 default 100 if HZ_100 2941 default 128 if HZ_128 2942 default 250 if HZ_250 2943 default 256 if HZ_256 2944 default 1000 if HZ_1000 2945 default 1024 if HZ_1024 2946 2947config SCHED_HRTICK 2948 def_bool HIGH_RES_TIMERS 2949 2950config KEXEC 2951 bool "Kexec system call" 2952 select KEXEC_CORE 2953 help 2954 kexec is a system call that implements the ability to shutdown your 2955 current kernel, and to start another kernel. It is like a reboot 2956 but it is independent of the system firmware. And like a reboot 2957 you can start any kernel with it, not just Linux. 2958 2959 The name comes from the similarity to the exec system call. 2960 2961 It is an ongoing process to be certain the hardware in a machine 2962 is properly shutdown, so do not be surprised if this code does not 2963 initially work for you. As of this writing the exact hardware 2964 interface is strongly in flux, so no good recommendation can be 2965 made. 2966 2967config CRASH_DUMP 2968 bool "Kernel crash dumps" 2969 help 2970 Generate crash dump after being started by kexec. 2971 This should be normally only set in special crash dump kernels 2972 which are loaded in the main kernel with kexec-tools into 2973 a specially reserved region and then later executed after 2974 a crash by kdump/kexec. The crash dump kernel must be compiled 2975 to a memory address not used by the main kernel or firmware using 2976 PHYSICAL_START. 2977 2978config PHYSICAL_START 2979 hex "Physical address where the kernel is loaded" 2980 default "0xffffffff84000000" 2981 depends on CRASH_DUMP 2982 help 2983 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 2984 If you plan to use kernel for capturing the crash dump change 2985 this value to start of the reserved region (the "X" value as 2986 specified in the "crashkernel=YM@XM" command line boot parameter 2987 passed to the panic-ed kernel). 2988 2989config MIPS_O32_FP64_SUPPORT 2990 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 2991 depends on 32BIT || MIPS32_O32 2992 help 2993 When this is enabled, the kernel will support use of 64-bit floating 2994 point registers with binaries using the O32 ABI along with the 2995 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 2996 32-bit MIPS systems this support is at the cost of increasing the 2997 size and complexity of the compiled FPU emulator. Thus if you are 2998 running a MIPS32 system and know that none of your userland binaries 2999 will require 64-bit floating point, you may wish to reduce the size 3000 of your kernel & potentially improve FP emulation performance by 3001 saying N here. 3002 3003 Although binutils currently supports use of this flag the details 3004 concerning its effect upon the O32 ABI in userland are still being 3005 worked on. In order to avoid userland becoming dependent upon current 3006 behaviour before the details have been finalised, this option should 3007 be considered experimental and only enabled by those working upon 3008 said details. 3009 3010 If unsure, say N. 3011 3012config USE_OF 3013 bool 3014 select OF 3015 select OF_EARLY_FLATTREE 3016 select IRQ_DOMAIN 3017 3018config UHI_BOOT 3019 bool 3020 3021config BUILTIN_DTB 3022 bool 3023 3024choice 3025 prompt "Kernel appended dtb support" if USE_OF 3026 default MIPS_NO_APPENDED_DTB 3027 3028 config MIPS_NO_APPENDED_DTB 3029 bool "None" 3030 help 3031 Do not enable appended dtb support. 3032 3033 config MIPS_ELF_APPENDED_DTB 3034 bool "vmlinux" 3035 help 3036 With this option, the boot code will look for a device tree binary 3037 DTB) included in the vmlinux ELF section .appended_dtb. By default 3038 it is empty and the DTB can be appended using binutils command 3039 objcopy: 3040 3041 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3042 3043 This is meant as a backward compatibility convenience for those 3044 systems with a bootloader that can't be upgraded to accommodate 3045 the documented boot protocol using a device tree. 3046 3047 config MIPS_RAW_APPENDED_DTB 3048 bool "vmlinux.bin or vmlinuz.bin" 3049 help 3050 With this option, the boot code will look for a device tree binary 3051 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3052 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3053 3054 This is meant as a backward compatibility convenience for those 3055 systems with a bootloader that can't be upgraded to accommodate 3056 the documented boot protocol using a device tree. 3057 3058 Beware that there is very little in terms of protection against 3059 this option being confused by leftover garbage in memory that might 3060 look like a DTB header after a reboot if no actual DTB is appended 3061 to vmlinux.bin. Do not leave this option active in a production kernel 3062 if you don't intend to always append a DTB. 3063endchoice 3064 3065choice 3066 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3067 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3068 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3069 !CAVIUM_OCTEON_SOC 3070 default MIPS_CMDLINE_FROM_BOOTLOADER 3071 3072 config MIPS_CMDLINE_FROM_DTB 3073 depends on USE_OF 3074 bool "Dtb kernel arguments if available" 3075 3076 config MIPS_CMDLINE_DTB_EXTEND 3077 depends on USE_OF 3078 bool "Extend dtb kernel arguments with bootloader arguments" 3079 3080 config MIPS_CMDLINE_FROM_BOOTLOADER 3081 bool "Bootloader kernel arguments if available" 3082 3083 config MIPS_CMDLINE_BUILTIN_EXTEND 3084 depends on CMDLINE_BOOL 3085 bool "Extend builtin kernel arguments with bootloader arguments" 3086endchoice 3087 3088endmenu 3089 3090config LOCKDEP_SUPPORT 3091 bool 3092 default y 3093 3094config STACKTRACE_SUPPORT 3095 bool 3096 default y 3097 3098config PGTABLE_LEVELS 3099 int 3100 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3101 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48) 3102 default 2 3103 3104config MIPS_AUTO_PFN_OFFSET 3105 bool 3106 3107menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3108 3109config PCI_DRIVERS_GENERIC 3110 select PCI_DOMAINS_GENERIC if PCI 3111 bool 3112 3113config PCI_DRIVERS_LEGACY 3114 def_bool !PCI_DRIVERS_GENERIC 3115 select NO_GENERIC_PCI_IOPORT_MAP 3116 select PCI_DOMAINS if PCI 3117 3118# 3119# ISA support is now enabled via select. Too many systems still have the one 3120# or other ISA chip on the board that users don't know about so don't expect 3121# users to choose the right thing ... 3122# 3123config ISA 3124 bool 3125 3126config TC 3127 bool "TURBOchannel support" 3128 depends on MACH_DECSTATION 3129 help 3130 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3131 processors. TURBOchannel programming specifications are available 3132 at: 3133 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3134 and: 3135 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3136 Linux driver support status is documented at: 3137 <http://www.linux-mips.org/wiki/DECstation> 3138 3139config MMU 3140 bool 3141 default y 3142 3143config ARCH_MMAP_RND_BITS_MIN 3144 default 12 if 64BIT 3145 default 8 3146 3147config ARCH_MMAP_RND_BITS_MAX 3148 default 18 if 64BIT 3149 default 15 3150 3151config ARCH_MMAP_RND_COMPAT_BITS_MIN 3152 default 8 3153 3154config ARCH_MMAP_RND_COMPAT_BITS_MAX 3155 default 15 3156 3157config I8253 3158 bool 3159 select CLKSRC_I8253 3160 select CLKEVT_I8253 3161 select MIPS_EXTERNAL_TIMER 3162endmenu 3163 3164config TRAD_SIGNALS 3165 bool 3166 3167config MIPS32_COMPAT 3168 bool 3169 3170config COMPAT 3171 bool 3172 3173config SYSVIPC_COMPAT 3174 bool 3175 3176config MIPS32_O32 3177 bool "Kernel support for o32 binaries" 3178 depends on 64BIT 3179 select ARCH_WANT_OLD_COMPAT_IPC 3180 select COMPAT 3181 select MIPS32_COMPAT 3182 select SYSVIPC_COMPAT if SYSVIPC 3183 help 3184 Select this option if you want to run o32 binaries. These are pure 3185 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3186 existing binaries are in this format. 3187 3188 If unsure, say Y. 3189 3190config MIPS32_N32 3191 bool "Kernel support for n32 binaries" 3192 depends on 64BIT 3193 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3194 select COMPAT 3195 select MIPS32_COMPAT 3196 select SYSVIPC_COMPAT if SYSVIPC 3197 help 3198 Select this option if you want to run n32 binaries. These are 3199 64-bit binaries using 32-bit quantities for addressing and certain 3200 data that would normally be 64-bit. They are used in special 3201 cases. 3202 3203 If unsure, say N. 3204 3205menu "Power management options" 3206 3207config ARCH_HIBERNATION_POSSIBLE 3208 def_bool y 3209 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3210 3211config ARCH_SUSPEND_POSSIBLE 3212 def_bool y 3213 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3214 3215source "kernel/power/Kconfig" 3216 3217endmenu 3218 3219config MIPS_EXTERNAL_TIMER 3220 bool 3221 3222menu "CPU Power Management" 3223 3224if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3225source "drivers/cpufreq/Kconfig" 3226endif 3227 3228source "drivers/cpuidle/Kconfig" 3229 3230endmenu 3231 3232source "arch/mips/kvm/Kconfig" 3233 3234source "arch/mips/vdso/Kconfig" 3235