1# SPDX-License-Identifier: GPL-2.0 2config MIPS 3 bool 4 default y 5 select ARCH_32BIT_OFF_T if !64BIT 6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT 7 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT 8 select ARCH_HAS_FORTIFY_SOURCE 9 select ARCH_HAS_KCOV 10 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA 11 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI) 12 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 13 select ARCH_HAS_UBSAN_SANITIZE_ALL 14 select ARCH_HAS_GCOV_PROFILE_ALL 15 select ARCH_KEEP_MEMBLOCK 16 select ARCH_SUPPORTS_UPROBES 17 select ARCH_USE_BUILTIN_BSWAP 18 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT 19 select ARCH_USE_MEMTEST 20 select ARCH_USE_QUEUED_RWLOCKS 21 select ARCH_USE_QUEUED_SPINLOCKS 22 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES 23 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU 24 select ARCH_WANT_IPC_PARSE_VERSION 25 select ARCH_WANT_LD_ORPHAN_WARN 26 select BUILDTIME_TABLE_SORT 27 select CLONE_BACKWARDS 28 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) 29 select CPU_PM if CPU_IDLE 30 select GENERIC_ATOMIC64 if !64BIT 31 select GENERIC_CMOS_UPDATE 32 select GENERIC_CPU_AUTOPROBE 33 select GENERIC_FIND_FIRST_BIT 34 select GENERIC_GETTIMEOFDAY 35 select GENERIC_IOMAP 36 select GENERIC_IRQ_PROBE 37 select GENERIC_IRQ_SHOW 38 select GENERIC_ISA_DMA if EISA 39 select GENERIC_LIB_ASHLDI3 40 select GENERIC_LIB_ASHRDI3 41 select GENERIC_LIB_CMPDI2 42 select GENERIC_LIB_LSHRDI3 43 select GENERIC_LIB_UCMPDI2 44 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC 45 select GENERIC_SMP_IDLE_THREAD 46 select GENERIC_TIME_VSYSCALL 47 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 48 select HANDLE_DOMAIN_IRQ 49 select HAVE_ARCH_COMPILER_H 50 select HAVE_ARCH_JUMP_LABEL 51 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT 52 select HAVE_ARCH_MMAP_RND_BITS if MMU 53 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 54 select HAVE_ARCH_SECCOMP_FILTER 55 select HAVE_ARCH_TRACEHOOK 56 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 57 select HAVE_ASM_MODVERSIONS 58 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS 59 select HAVE_CONTEXT_TRACKING 60 select HAVE_TIF_NOHZ 61 select HAVE_C_RECORDMCOUNT 62 select HAVE_DEBUG_KMEMLEAK 63 select HAVE_DEBUG_STACKOVERFLOW 64 select HAVE_DMA_CONTIGUOUS 65 select HAVE_DYNAMIC_FTRACE 66 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2 67 select HAVE_EXIT_THREAD 68 select HAVE_FAST_GUP 69 select HAVE_FTRACE_MCOUNT_RECORD 70 select HAVE_FUNCTION_GRAPH_TRACER 71 select HAVE_FUNCTION_TRACER 72 select HAVE_GCC_PLUGINS 73 select HAVE_GENERIC_VDSO 74 select HAVE_IDE 75 select HAVE_IOREMAP_PROT 76 select HAVE_IRQ_EXIT_ON_IRQ_STACK 77 select HAVE_IRQ_TIME_ACCOUNTING 78 select HAVE_KPROBES 79 select HAVE_KRETPROBES 80 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION 81 select HAVE_MOD_ARCH_SPECIFIC 82 select HAVE_NMI 83 select HAVE_PERF_EVENTS 84 select HAVE_PERF_REGS 85 select HAVE_PERF_USER_STACK_DUMP 86 select HAVE_REGS_AND_STACK_ACCESS_API 87 select HAVE_RSEQ 88 select HAVE_SPARSE_SYSCALL_NR 89 select HAVE_STACKPROTECTOR 90 select HAVE_SYSCALL_TRACEPOINTS 91 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP 92 select IRQ_FORCED_THREADING 93 select ISA if EISA 94 select MODULES_USE_ELF_REL if MODULES 95 select MODULES_USE_ELF_RELA if MODULES && 64BIT 96 select PERF_USE_VMALLOC 97 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 98 select RTC_LIB 99 select SYSCTL_EXCEPTION_TRACE 100 select VIRT_TO_BUS 101 select ARCH_HAS_ELFCORE_COMPAT 102 103config MIPS_FIXUP_BIGPHYS_ADDR 104 bool 105 106config MIPS_GENERIC 107 bool 108 109config MACH_INGENIC 110 bool 111 select SYS_SUPPORTS_32BIT_KERNEL 112 select SYS_SUPPORTS_LITTLE_ENDIAN 113 select SYS_SUPPORTS_ZBOOT 114 select DMA_NONCOHERENT 115 select IRQ_MIPS_CPU 116 select PINCTRL 117 select GPIOLIB 118 select COMMON_CLK 119 select GENERIC_IRQ_CHIP 120 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 121 select USE_OF 122 select CPU_SUPPORTS_CPUFREQ 123 select MIPS_EXTERNAL_TIMER 124 125menu "Machine selection" 126 127choice 128 prompt "System type" 129 default MIPS_GENERIC_KERNEL 130 131config MIPS_GENERIC_KERNEL 132 bool "Generic board-agnostic MIPS kernel" 133 select ARCH_HAS_SETUP_DMA_OPS 134 select MIPS_GENERIC 135 select BOOT_RAW 136 select BUILTIN_DTB 137 select CEVT_R4K 138 select CLKSRC_MIPS_GIC 139 select COMMON_CLK 140 select CPU_MIPSR2_IRQ_EI 141 select CPU_MIPSR2_IRQ_VI 142 select CSRC_R4K 143 select DMA_NONCOHERENT 144 select HAVE_PCI 145 select IRQ_MIPS_CPU 146 select MIPS_AUTO_PFN_OFFSET 147 select MIPS_CPU_SCACHE 148 select MIPS_GIC 149 select MIPS_L1_CACHE_SHIFT_7 150 select NO_EXCEPT_FILL 151 select PCI_DRIVERS_GENERIC 152 select SMP_UP if SMP 153 select SWAP_IO_SPACE 154 select SYS_HAS_CPU_MIPS32_R1 155 select SYS_HAS_CPU_MIPS32_R2 156 select SYS_HAS_CPU_MIPS32_R6 157 select SYS_HAS_CPU_MIPS64_R1 158 select SYS_HAS_CPU_MIPS64_R2 159 select SYS_HAS_CPU_MIPS64_R6 160 select SYS_SUPPORTS_32BIT_KERNEL 161 select SYS_SUPPORTS_64BIT_KERNEL 162 select SYS_SUPPORTS_BIG_ENDIAN 163 select SYS_SUPPORTS_HIGHMEM 164 select SYS_SUPPORTS_LITTLE_ENDIAN 165 select SYS_SUPPORTS_MICROMIPS 166 select SYS_SUPPORTS_MIPS16 167 select SYS_SUPPORTS_MIPS_CPS 168 select SYS_SUPPORTS_MULTITHREADING 169 select SYS_SUPPORTS_RELOCATABLE 170 select SYS_SUPPORTS_SMARTMIPS 171 select SYS_SUPPORTS_ZBOOT 172 select UHI_BOOT 173 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 174 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 175 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 176 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 177 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 178 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 179 select USE_OF 180 help 181 Select this to build a kernel which aims to support multiple boards, 182 generally using a flattened device tree passed from the bootloader 183 using the boot protocol defined in the UHI (Unified Hosting 184 Interface) specification. 185 186config MIPS_ALCHEMY 187 bool "Alchemy processor based machines" 188 select PHYS_ADDR_T_64BIT 189 select CEVT_R4K 190 select CSRC_R4K 191 select IRQ_MIPS_CPU 192 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is 193 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 194 select SYS_HAS_CPU_MIPS32_R1 195 select SYS_SUPPORTS_32BIT_KERNEL 196 select SYS_SUPPORTS_APM_EMULATION 197 select GPIOLIB 198 select SYS_SUPPORTS_ZBOOT 199 select COMMON_CLK 200 201config AR7 202 bool "Texas Instruments AR7" 203 select BOOT_ELF32 204 select COMMON_CLK 205 select DMA_NONCOHERENT 206 select CEVT_R4K 207 select CSRC_R4K 208 select IRQ_MIPS_CPU 209 select NO_EXCEPT_FILL 210 select SWAP_IO_SPACE 211 select SYS_HAS_CPU_MIPS32_R1 212 select SYS_HAS_EARLY_PRINTK 213 select SYS_SUPPORTS_32BIT_KERNEL 214 select SYS_SUPPORTS_LITTLE_ENDIAN 215 select SYS_SUPPORTS_MIPS16 216 select SYS_SUPPORTS_ZBOOT_UART16550 217 select GPIOLIB 218 select VLYNQ 219 help 220 Support for the Texas Instruments AR7 System-on-a-Chip 221 family: TNETD7100, 7200 and 7300. 222 223config ATH25 224 bool "Atheros AR231x/AR531x SoC support" 225 select CEVT_R4K 226 select CSRC_R4K 227 select DMA_NONCOHERENT 228 select IRQ_MIPS_CPU 229 select IRQ_DOMAIN 230 select SYS_HAS_CPU_MIPS32_R1 231 select SYS_SUPPORTS_BIG_ENDIAN 232 select SYS_SUPPORTS_32BIT_KERNEL 233 select SYS_HAS_EARLY_PRINTK 234 help 235 Support for Atheros AR231x and Atheros AR531x based boards 236 237config ATH79 238 bool "Atheros AR71XX/AR724X/AR913X based boards" 239 select ARCH_HAS_RESET_CONTROLLER 240 select BOOT_RAW 241 select CEVT_R4K 242 select CSRC_R4K 243 select DMA_NONCOHERENT 244 select GPIOLIB 245 select PINCTRL 246 select COMMON_CLK 247 select IRQ_MIPS_CPU 248 select SYS_HAS_CPU_MIPS32_R2 249 select SYS_HAS_EARLY_PRINTK 250 select SYS_SUPPORTS_32BIT_KERNEL 251 select SYS_SUPPORTS_BIG_ENDIAN 252 select SYS_SUPPORTS_MIPS16 253 select SYS_SUPPORTS_ZBOOT_UART_PROM 254 select USE_OF 255 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 256 help 257 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 258 259config BMIPS_GENERIC 260 bool "Broadcom Generic BMIPS kernel" 261 select ARCH_HAS_RESET_CONTROLLER 262 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 263 select ARCH_HAS_PHYS_TO_DMA 264 select BOOT_RAW 265 select NO_EXCEPT_FILL 266 select USE_OF 267 select CEVT_R4K 268 select CSRC_R4K 269 select SYNC_R4K 270 select COMMON_CLK 271 select BCM6345_L1_IRQ 272 select BCM7038_L1_IRQ 273 select BCM7120_L2_IRQ 274 select BRCMSTB_L2_IRQ 275 select IRQ_MIPS_CPU 276 select DMA_NONCOHERENT 277 select SYS_SUPPORTS_32BIT_KERNEL 278 select SYS_SUPPORTS_LITTLE_ENDIAN 279 select SYS_SUPPORTS_BIG_ENDIAN 280 select SYS_SUPPORTS_HIGHMEM 281 select SYS_HAS_CPU_BMIPS32_3300 282 select SYS_HAS_CPU_BMIPS4350 283 select SYS_HAS_CPU_BMIPS4380 284 select SYS_HAS_CPU_BMIPS5000 285 select SWAP_IO_SPACE 286 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 287 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 288 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 289 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 290 select HARDIRQS_SW_RESEND 291 help 292 Build a generic DT-based kernel image that boots on select 293 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 294 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 295 must be set appropriately for your board. 296 297config BCM47XX 298 bool "Broadcom BCM47XX based boards" 299 select BOOT_RAW 300 select CEVT_R4K 301 select CSRC_R4K 302 select DMA_NONCOHERENT 303 select HAVE_PCI 304 select IRQ_MIPS_CPU 305 select SYS_HAS_CPU_MIPS32_R1 306 select NO_EXCEPT_FILL 307 select SYS_SUPPORTS_32BIT_KERNEL 308 select SYS_SUPPORTS_LITTLE_ENDIAN 309 select SYS_SUPPORTS_MIPS16 310 select SYS_SUPPORTS_ZBOOT 311 select SYS_HAS_EARLY_PRINTK 312 select USE_GENERIC_EARLY_PRINTK_8250 313 select GPIOLIB 314 select LEDS_GPIO_REGISTER 315 select BCM47XX_NVRAM 316 select BCM47XX_SPROM 317 select BCM47XX_SSB if !BCM47XX_BCMA 318 help 319 Support for BCM47XX based boards 320 321config BCM63XX 322 bool "Broadcom BCM63XX based boards" 323 select BOOT_RAW 324 select CEVT_R4K 325 select CSRC_R4K 326 select SYNC_R4K 327 select DMA_NONCOHERENT 328 select IRQ_MIPS_CPU 329 select SYS_SUPPORTS_32BIT_KERNEL 330 select SYS_SUPPORTS_BIG_ENDIAN 331 select SYS_HAS_EARLY_PRINTK 332 select SWAP_IO_SPACE 333 select GPIOLIB 334 select MIPS_L1_CACHE_SHIFT_4 335 select CLKDEV_LOOKUP 336 select HAVE_LEGACY_CLK 337 help 338 Support for BCM63XX based boards 339 340config MIPS_COBALT 341 bool "Cobalt Server" 342 select CEVT_R4K 343 select CSRC_R4K 344 select CEVT_GT641XX 345 select DMA_NONCOHERENT 346 select FORCE_PCI 347 select I8253 348 select I8259 349 select IRQ_MIPS_CPU 350 select IRQ_GT641XX 351 select PCI_GT64XXX_PCI0 352 select SYS_HAS_CPU_NEVADA 353 select SYS_HAS_EARLY_PRINTK 354 select SYS_SUPPORTS_32BIT_KERNEL 355 select SYS_SUPPORTS_64BIT_KERNEL 356 select SYS_SUPPORTS_LITTLE_ENDIAN 357 select USE_GENERIC_EARLY_PRINTK_8250 358 359config MACH_DECSTATION 360 bool "DECstations" 361 select BOOT_ELF32 362 select CEVT_DS1287 363 select CEVT_R4K if CPU_R4X00 364 select CSRC_IOASIC 365 select CSRC_R4K if CPU_R4X00 366 select CPU_DADDI_WORKAROUNDS if 64BIT 367 select CPU_R4000_WORKAROUNDS if 64BIT 368 select CPU_R4400_WORKAROUNDS if 64BIT 369 select DMA_NONCOHERENT 370 select NO_IOPORT_MAP 371 select IRQ_MIPS_CPU 372 select SYS_HAS_CPU_R3000 373 select SYS_HAS_CPU_R4X00 374 select SYS_SUPPORTS_32BIT_KERNEL 375 select SYS_SUPPORTS_64BIT_KERNEL 376 select SYS_SUPPORTS_LITTLE_ENDIAN 377 select SYS_SUPPORTS_128HZ 378 select SYS_SUPPORTS_256HZ 379 select SYS_SUPPORTS_1024HZ 380 select MIPS_L1_CACHE_SHIFT_4 381 help 382 This enables support for DEC's MIPS based workstations. For details 383 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 384 DECstation porting pages on <http://decstation.unix-ag.org/>. 385 386 If you have one of the following DECstation Models you definitely 387 want to choose R4xx0 for the CPU Type: 388 389 DECstation 5000/50 390 DECstation 5000/150 391 DECstation 5000/260 392 DECsystem 5900/260 393 394 otherwise choose R3000. 395 396config MACH_JAZZ 397 bool "Jazz family of machines" 398 select ARC_MEMORY 399 select ARC_PROMLIB 400 select ARCH_MIGHT_HAVE_PC_PARPORT 401 select ARCH_MIGHT_HAVE_PC_SERIO 402 select DMA_OPS 403 select FW_ARC 404 select FW_ARC32 405 select ARCH_MAY_HAVE_PC_FDC 406 select CEVT_R4K 407 select CSRC_R4K 408 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 409 select GENERIC_ISA_DMA 410 select HAVE_PCSPKR_PLATFORM 411 select IRQ_MIPS_CPU 412 select I8253 413 select I8259 414 select ISA 415 select SYS_HAS_CPU_R4X00 416 select SYS_SUPPORTS_32BIT_KERNEL 417 select SYS_SUPPORTS_64BIT_KERNEL 418 select SYS_SUPPORTS_100HZ 419 select SYS_SUPPORTS_LITTLE_ENDIAN 420 help 421 This a family of machines based on the MIPS R4030 chipset which was 422 used by several vendors to build RISC/os and Windows NT workstations. 423 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 424 Olivetti M700-10 workstations. 425 426config MACH_INGENIC_SOC 427 bool "Ingenic SoC based machines" 428 select MIPS_GENERIC 429 select MACH_INGENIC 430 select SYS_SUPPORTS_ZBOOT_UART16550 431 432config LANTIQ 433 bool "Lantiq based platforms" 434 select DMA_NONCOHERENT 435 select IRQ_MIPS_CPU 436 select CEVT_R4K 437 select CSRC_R4K 438 select SYS_HAS_CPU_MIPS32_R1 439 select SYS_HAS_CPU_MIPS32_R2 440 select SYS_SUPPORTS_BIG_ENDIAN 441 select SYS_SUPPORTS_32BIT_KERNEL 442 select SYS_SUPPORTS_MIPS16 443 select SYS_SUPPORTS_MULTITHREADING 444 select SYS_SUPPORTS_VPE_LOADER 445 select SYS_HAS_EARLY_PRINTK 446 select GPIOLIB 447 select SWAP_IO_SPACE 448 select BOOT_RAW 449 select CLKDEV_LOOKUP 450 select HAVE_LEGACY_CLK 451 select USE_OF 452 select PINCTRL 453 select PINCTRL_LANTIQ 454 select ARCH_HAS_RESET_CONTROLLER 455 select RESET_CONTROLLER 456 457config MACH_LOONGSON32 458 bool "Loongson 32-bit family of machines" 459 select SYS_SUPPORTS_ZBOOT 460 help 461 This enables support for the Loongson-1 family of machines. 462 463 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 464 the Institute of Computing Technology (ICT), Chinese Academy of 465 Sciences (CAS). 466 467config MACH_LOONGSON2EF 468 bool "Loongson-2E/F family of machines" 469 select SYS_SUPPORTS_ZBOOT 470 help 471 This enables the support of early Loongson-2E/F family of machines. 472 473config MACH_LOONGSON64 474 bool "Loongson 64-bit family of machines" 475 select ARCH_SPARSEMEM_ENABLE 476 select ARCH_MIGHT_HAVE_PC_PARPORT 477 select ARCH_MIGHT_HAVE_PC_SERIO 478 select GENERIC_ISA_DMA_SUPPORT_BROKEN 479 select BOOT_ELF32 480 select BOARD_SCACHE 481 select CSRC_R4K 482 select CEVT_R4K 483 select CPU_HAS_WB 484 select FORCE_PCI 485 select ISA 486 select I8259 487 select IRQ_MIPS_CPU 488 select NO_EXCEPT_FILL 489 select NR_CPUS_DEFAULT_64 490 select USE_GENERIC_EARLY_PRINTK_8250 491 select PCI_DRIVERS_GENERIC 492 select SYS_HAS_CPU_LOONGSON64 493 select SYS_HAS_EARLY_PRINTK 494 select SYS_SUPPORTS_SMP 495 select SYS_SUPPORTS_HOTPLUG_CPU 496 select SYS_SUPPORTS_NUMA 497 select SYS_SUPPORTS_64BIT_KERNEL 498 select SYS_SUPPORTS_HIGHMEM 499 select SYS_SUPPORTS_LITTLE_ENDIAN 500 select SYS_SUPPORTS_ZBOOT 501 select SYS_SUPPORTS_RELOCATABLE 502 select ZONE_DMA32 503 select COMMON_CLK 504 select USE_OF 505 select BUILTIN_DTB 506 select PCI_HOST_GENERIC 507 help 508 This enables the support of Loongson-2/3 family of machines. 509 510 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 511 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 512 and Loongson-2F which will be removed), developed by the Institute 513 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 514 515config MACH_PISTACHIO 516 bool "IMG Pistachio SoC based boards" 517 select BOOT_ELF32 518 select BOOT_RAW 519 select CEVT_R4K 520 select CLKSRC_MIPS_GIC 521 select COMMON_CLK 522 select CSRC_R4K 523 select DMA_NONCOHERENT 524 select GPIOLIB 525 select IRQ_MIPS_CPU 526 select MFD_SYSCON 527 select MIPS_CPU_SCACHE 528 select MIPS_GIC 529 select PINCTRL 530 select REGULATOR 531 select SYS_HAS_CPU_MIPS32_R2 532 select SYS_SUPPORTS_32BIT_KERNEL 533 select SYS_SUPPORTS_LITTLE_ENDIAN 534 select SYS_SUPPORTS_MIPS_CPS 535 select SYS_SUPPORTS_MULTITHREADING 536 select SYS_SUPPORTS_RELOCATABLE 537 select SYS_SUPPORTS_ZBOOT 538 select SYS_HAS_EARLY_PRINTK 539 select USE_GENERIC_EARLY_PRINTK_8250 540 select USE_OF 541 help 542 This enables support for the IMG Pistachio SoC platform. 543 544config MIPS_MALTA 545 bool "MIPS Malta board" 546 select ARCH_MAY_HAVE_PC_FDC 547 select ARCH_MIGHT_HAVE_PC_PARPORT 548 select ARCH_MIGHT_HAVE_PC_SERIO 549 select BOOT_ELF32 550 select BOOT_RAW 551 select BUILTIN_DTB 552 select CEVT_R4K 553 select CLKSRC_MIPS_GIC 554 select COMMON_CLK 555 select CSRC_R4K 556 select DMA_NONCOHERENT 557 select GENERIC_ISA_DMA 558 select HAVE_PCSPKR_PLATFORM 559 select HAVE_PCI 560 select I8253 561 select I8259 562 select IRQ_MIPS_CPU 563 select MIPS_BONITO64 564 select MIPS_CPU_SCACHE 565 select MIPS_GIC 566 select MIPS_L1_CACHE_SHIFT_6 567 select MIPS_MSC 568 select PCI_GT64XXX_PCI0 569 select SMP_UP if SMP 570 select SWAP_IO_SPACE 571 select SYS_HAS_CPU_MIPS32_R1 572 select SYS_HAS_CPU_MIPS32_R2 573 select SYS_HAS_CPU_MIPS32_R3_5 574 select SYS_HAS_CPU_MIPS32_R5 575 select SYS_HAS_CPU_MIPS32_R6 576 select SYS_HAS_CPU_MIPS64_R1 577 select SYS_HAS_CPU_MIPS64_R2 578 select SYS_HAS_CPU_MIPS64_R6 579 select SYS_HAS_CPU_NEVADA 580 select SYS_HAS_CPU_RM7000 581 select SYS_SUPPORTS_32BIT_KERNEL 582 select SYS_SUPPORTS_64BIT_KERNEL 583 select SYS_SUPPORTS_BIG_ENDIAN 584 select SYS_SUPPORTS_HIGHMEM 585 select SYS_SUPPORTS_LITTLE_ENDIAN 586 select SYS_SUPPORTS_MICROMIPS 587 select SYS_SUPPORTS_MIPS16 588 select SYS_SUPPORTS_MIPS_CMP 589 select SYS_SUPPORTS_MIPS_CPS 590 select SYS_SUPPORTS_MULTITHREADING 591 select SYS_SUPPORTS_RELOCATABLE 592 select SYS_SUPPORTS_SMARTMIPS 593 select SYS_SUPPORTS_VPE_LOADER 594 select SYS_SUPPORTS_ZBOOT 595 select USE_OF 596 select WAR_ICACHE_REFILLS 597 select ZONE_DMA32 if 64BIT 598 help 599 This enables support for the MIPS Technologies Malta evaluation 600 board. 601 602config MACH_PIC32 603 bool "Microchip PIC32 Family" 604 help 605 This enables support for the Microchip PIC32 family of platforms. 606 607 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 608 microcontrollers. 609 610config MACH_VR41XX 611 bool "NEC VR4100 series based machines" 612 select CEVT_R4K 613 select CSRC_R4K 614 select SYS_HAS_CPU_VR41XX 615 select SYS_SUPPORTS_MIPS16 616 select GPIOLIB 617 618config MACH_NINTENDO64 619 bool "Nintendo 64 console" 620 select CEVT_R4K 621 select CSRC_R4K 622 select SYS_HAS_CPU_R4300 623 select SYS_SUPPORTS_BIG_ENDIAN 624 select SYS_SUPPORTS_ZBOOT 625 select SYS_SUPPORTS_32BIT_KERNEL 626 select SYS_SUPPORTS_64BIT_KERNEL 627 select DMA_NONCOHERENT 628 select IRQ_MIPS_CPU 629 630config RALINK 631 bool "Ralink based machines" 632 select CEVT_R4K 633 select COMMON_CLK 634 select CSRC_R4K 635 select BOOT_RAW 636 select DMA_NONCOHERENT 637 select IRQ_MIPS_CPU 638 select USE_OF 639 select SYS_HAS_CPU_MIPS32_R1 640 select SYS_HAS_CPU_MIPS32_R2 641 select SYS_SUPPORTS_32BIT_KERNEL 642 select SYS_SUPPORTS_LITTLE_ENDIAN 643 select SYS_SUPPORTS_MIPS16 644 select SYS_SUPPORTS_ZBOOT 645 select SYS_HAS_EARLY_PRINTK 646 select CLKDEV_LOOKUP 647 select ARCH_HAS_RESET_CONTROLLER 648 select RESET_CONTROLLER 649 650config MACH_REALTEK_RTL 651 bool "Realtek RTL838x/RTL839x based machines" 652 select MIPS_GENERIC 653 select DMA_NONCOHERENT 654 select IRQ_MIPS_CPU 655 select CSRC_R4K 656 select CEVT_R4K 657 select SYS_HAS_CPU_MIPS32_R1 658 select SYS_HAS_CPU_MIPS32_R2 659 select SYS_SUPPORTS_BIG_ENDIAN 660 select SYS_SUPPORTS_32BIT_KERNEL 661 select SYS_SUPPORTS_MIPS16 662 select SYS_SUPPORTS_MULTITHREADING 663 select SYS_SUPPORTS_VPE_LOADER 664 select SYS_HAS_EARLY_PRINTK 665 select SYS_HAS_EARLY_PRINTK_8250 666 select USE_GENERIC_EARLY_PRINTK_8250 667 select BOOT_RAW 668 select PINCTRL 669 select USE_OF 670 671config SGI_IP22 672 bool "SGI IP22 (Indy/Indigo2)" 673 select ARC_MEMORY 674 select ARC_PROMLIB 675 select FW_ARC 676 select FW_ARC32 677 select ARCH_MIGHT_HAVE_PC_SERIO 678 select BOOT_ELF32 679 select CEVT_R4K 680 select CSRC_R4K 681 select DEFAULT_SGI_PARTITION 682 select DMA_NONCOHERENT 683 select HAVE_EISA 684 select I8253 685 select I8259 686 select IP22_CPU_SCACHE 687 select IRQ_MIPS_CPU 688 select GENERIC_ISA_DMA_SUPPORT_BROKEN 689 select SGI_HAS_I8042 690 select SGI_HAS_INDYDOG 691 select SGI_HAS_HAL2 692 select SGI_HAS_SEEQ 693 select SGI_HAS_WD93 694 select SGI_HAS_ZILOG 695 select SWAP_IO_SPACE 696 select SYS_HAS_CPU_R4X00 697 select SYS_HAS_CPU_R5000 698 select SYS_HAS_EARLY_PRINTK 699 select SYS_SUPPORTS_32BIT_KERNEL 700 select SYS_SUPPORTS_64BIT_KERNEL 701 select SYS_SUPPORTS_BIG_ENDIAN 702 select WAR_R4600_V1_INDEX_ICACHEOP 703 select WAR_R4600_V1_HIT_CACHEOP 704 select WAR_R4600_V2_HIT_CACHEOP 705 select MIPS_L1_CACHE_SHIFT_7 706 help 707 This are the SGI Indy, Challenge S and Indigo2, as well as certain 708 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 709 that runs on these, say Y here. 710 711config SGI_IP27 712 bool "SGI IP27 (Origin200/2000)" 713 select ARCH_HAS_PHYS_TO_DMA 714 select ARCH_SPARSEMEM_ENABLE 715 select FW_ARC 716 select FW_ARC64 717 select ARC_CMDLINE_ONLY 718 select BOOT_ELF64 719 select DEFAULT_SGI_PARTITION 720 select FORCE_PCI 721 select SYS_HAS_EARLY_PRINTK 722 select HAVE_PCI 723 select IRQ_MIPS_CPU 724 select IRQ_DOMAIN_HIERARCHY 725 select NR_CPUS_DEFAULT_64 726 select PCI_DRIVERS_GENERIC 727 select PCI_XTALK_BRIDGE 728 select SYS_HAS_CPU_R10000 729 select SYS_SUPPORTS_64BIT_KERNEL 730 select SYS_SUPPORTS_BIG_ENDIAN 731 select SYS_SUPPORTS_NUMA 732 select SYS_SUPPORTS_SMP 733 select WAR_R10000_LLSC 734 select MIPS_L1_CACHE_SHIFT_7 735 select NUMA 736 help 737 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 738 workstations. To compile a Linux kernel that runs on these, say Y 739 here. 740 741config SGI_IP28 742 bool "SGI IP28 (Indigo2 R10k)" 743 select ARC_MEMORY 744 select ARC_PROMLIB 745 select FW_ARC 746 select FW_ARC64 747 select ARCH_MIGHT_HAVE_PC_SERIO 748 select BOOT_ELF64 749 select CEVT_R4K 750 select CSRC_R4K 751 select DEFAULT_SGI_PARTITION 752 select DMA_NONCOHERENT 753 select GENERIC_ISA_DMA_SUPPORT_BROKEN 754 select IRQ_MIPS_CPU 755 select HAVE_EISA 756 select I8253 757 select I8259 758 select SGI_HAS_I8042 759 select SGI_HAS_INDYDOG 760 select SGI_HAS_HAL2 761 select SGI_HAS_SEEQ 762 select SGI_HAS_WD93 763 select SGI_HAS_ZILOG 764 select SWAP_IO_SPACE 765 select SYS_HAS_CPU_R10000 766 select SYS_HAS_EARLY_PRINTK 767 select SYS_SUPPORTS_64BIT_KERNEL 768 select SYS_SUPPORTS_BIG_ENDIAN 769 select WAR_R10000_LLSC 770 select MIPS_L1_CACHE_SHIFT_7 771 help 772 This is the SGI Indigo2 with R10000 processor. To compile a Linux 773 kernel that runs on these, say Y here. 774 775config SGI_IP30 776 bool "SGI IP30 (Octane/Octane2)" 777 select ARCH_HAS_PHYS_TO_DMA 778 select FW_ARC 779 select FW_ARC64 780 select BOOT_ELF64 781 select CEVT_R4K 782 select CSRC_R4K 783 select FORCE_PCI 784 select SYNC_R4K if SMP 785 select ZONE_DMA32 786 select HAVE_PCI 787 select IRQ_MIPS_CPU 788 select IRQ_DOMAIN_HIERARCHY 789 select NR_CPUS_DEFAULT_2 790 select PCI_DRIVERS_GENERIC 791 select PCI_XTALK_BRIDGE 792 select SYS_HAS_EARLY_PRINTK 793 select SYS_HAS_CPU_R10000 794 select SYS_SUPPORTS_64BIT_KERNEL 795 select SYS_SUPPORTS_BIG_ENDIAN 796 select SYS_SUPPORTS_SMP 797 select WAR_R10000_LLSC 798 select MIPS_L1_CACHE_SHIFT_7 799 select ARC_MEMORY 800 help 801 These are the SGI Octane and Octane2 graphics workstations. To 802 compile a Linux kernel that runs on these, say Y here. 803 804config SGI_IP32 805 bool "SGI IP32 (O2)" 806 select ARC_MEMORY 807 select ARC_PROMLIB 808 select ARCH_HAS_PHYS_TO_DMA 809 select FW_ARC 810 select FW_ARC32 811 select BOOT_ELF32 812 select CEVT_R4K 813 select CSRC_R4K 814 select DMA_NONCOHERENT 815 select HAVE_PCI 816 select IRQ_MIPS_CPU 817 select R5000_CPU_SCACHE 818 select RM7000_CPU_SCACHE 819 select SYS_HAS_CPU_R5000 820 select SYS_HAS_CPU_R10000 if BROKEN 821 select SYS_HAS_CPU_RM7000 822 select SYS_HAS_CPU_NEVADA 823 select SYS_SUPPORTS_64BIT_KERNEL 824 select SYS_SUPPORTS_BIG_ENDIAN 825 select WAR_ICACHE_REFILLS 826 help 827 If you want this kernel to run on SGI O2 workstation, say Y here. 828 829config SIBYTE_CRHINE 830 bool "Sibyte BCM91120C-CRhine" 831 select BOOT_ELF32 832 select SIBYTE_BCM1120 833 select SWAP_IO_SPACE 834 select SYS_HAS_CPU_SB1 835 select SYS_SUPPORTS_BIG_ENDIAN 836 select SYS_SUPPORTS_LITTLE_ENDIAN 837 838config SIBYTE_CARMEL 839 bool "Sibyte BCM91120x-Carmel" 840 select BOOT_ELF32 841 select SIBYTE_BCM1120 842 select SWAP_IO_SPACE 843 select SYS_HAS_CPU_SB1 844 select SYS_SUPPORTS_BIG_ENDIAN 845 select SYS_SUPPORTS_LITTLE_ENDIAN 846 847config SIBYTE_CRHONE 848 bool "Sibyte BCM91125C-CRhone" 849 select BOOT_ELF32 850 select SIBYTE_BCM1125 851 select SWAP_IO_SPACE 852 select SYS_HAS_CPU_SB1 853 select SYS_SUPPORTS_BIG_ENDIAN 854 select SYS_SUPPORTS_HIGHMEM 855 select SYS_SUPPORTS_LITTLE_ENDIAN 856 857config SIBYTE_RHONE 858 bool "Sibyte BCM91125E-Rhone" 859 select BOOT_ELF32 860 select SIBYTE_BCM1125H 861 select SWAP_IO_SPACE 862 select SYS_HAS_CPU_SB1 863 select SYS_SUPPORTS_BIG_ENDIAN 864 select SYS_SUPPORTS_LITTLE_ENDIAN 865 866config SIBYTE_SWARM 867 bool "Sibyte BCM91250A-SWARM" 868 select BOOT_ELF32 869 select HAVE_PATA_PLATFORM 870 select SIBYTE_SB1250 871 select SWAP_IO_SPACE 872 select SYS_HAS_CPU_SB1 873 select SYS_SUPPORTS_BIG_ENDIAN 874 select SYS_SUPPORTS_HIGHMEM 875 select SYS_SUPPORTS_LITTLE_ENDIAN 876 select ZONE_DMA32 if 64BIT 877 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 878 879config SIBYTE_LITTLESUR 880 bool "Sibyte BCM91250C2-LittleSur" 881 select BOOT_ELF32 882 select HAVE_PATA_PLATFORM 883 select SIBYTE_SB1250 884 select SWAP_IO_SPACE 885 select SYS_HAS_CPU_SB1 886 select SYS_SUPPORTS_BIG_ENDIAN 887 select SYS_SUPPORTS_HIGHMEM 888 select SYS_SUPPORTS_LITTLE_ENDIAN 889 select ZONE_DMA32 if 64BIT 890 891config SIBYTE_SENTOSA 892 bool "Sibyte BCM91250E-Sentosa" 893 select BOOT_ELF32 894 select SIBYTE_SB1250 895 select SWAP_IO_SPACE 896 select SYS_HAS_CPU_SB1 897 select SYS_SUPPORTS_BIG_ENDIAN 898 select SYS_SUPPORTS_LITTLE_ENDIAN 899 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 900 901config SIBYTE_BIGSUR 902 bool "Sibyte BCM91480B-BigSur" 903 select BOOT_ELF32 904 select NR_CPUS_DEFAULT_4 905 select SIBYTE_BCM1x80 906 select SWAP_IO_SPACE 907 select SYS_HAS_CPU_SB1 908 select SYS_SUPPORTS_BIG_ENDIAN 909 select SYS_SUPPORTS_HIGHMEM 910 select SYS_SUPPORTS_LITTLE_ENDIAN 911 select ZONE_DMA32 if 64BIT 912 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 913 914config SNI_RM 915 bool "SNI RM200/300/400" 916 select ARC_MEMORY 917 select ARC_PROMLIB 918 select FW_ARC if CPU_LITTLE_ENDIAN 919 select FW_ARC32 if CPU_LITTLE_ENDIAN 920 select FW_SNIPROM if CPU_BIG_ENDIAN 921 select ARCH_MAY_HAVE_PC_FDC 922 select ARCH_MIGHT_HAVE_PC_PARPORT 923 select ARCH_MIGHT_HAVE_PC_SERIO 924 select BOOT_ELF32 925 select CEVT_R4K 926 select CSRC_R4K 927 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 928 select DMA_NONCOHERENT 929 select GENERIC_ISA_DMA 930 select HAVE_EISA 931 select HAVE_PCSPKR_PLATFORM 932 select HAVE_PCI 933 select IRQ_MIPS_CPU 934 select I8253 935 select I8259 936 select ISA 937 select MIPS_L1_CACHE_SHIFT_6 938 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 939 select SYS_HAS_CPU_R4X00 940 select SYS_HAS_CPU_R5000 941 select SYS_HAS_CPU_R10000 942 select R5000_CPU_SCACHE 943 select SYS_HAS_EARLY_PRINTK 944 select SYS_SUPPORTS_32BIT_KERNEL 945 select SYS_SUPPORTS_64BIT_KERNEL 946 select SYS_SUPPORTS_BIG_ENDIAN 947 select SYS_SUPPORTS_HIGHMEM 948 select SYS_SUPPORTS_LITTLE_ENDIAN 949 select WAR_R4600_V2_HIT_CACHEOP 950 help 951 The SNI RM200/300/400 are MIPS-based machines manufactured by 952 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 953 Technology and now in turn merged with Fujitsu. Say Y here to 954 support this machine type. 955 956config MACH_TX39XX 957 bool "Toshiba TX39 series based machines" 958 959config MACH_TX49XX 960 bool "Toshiba TX49 series based machines" 961 select WAR_TX49XX_ICACHE_INDEX_INV 962 963config MIKROTIK_RB532 964 bool "Mikrotik RB532 boards" 965 select CEVT_R4K 966 select CSRC_R4K 967 select DMA_NONCOHERENT 968 select HAVE_PCI 969 select IRQ_MIPS_CPU 970 select SYS_HAS_CPU_MIPS32_R1 971 select SYS_SUPPORTS_32BIT_KERNEL 972 select SYS_SUPPORTS_LITTLE_ENDIAN 973 select SWAP_IO_SPACE 974 select BOOT_RAW 975 select GPIOLIB 976 select MIPS_L1_CACHE_SHIFT_4 977 help 978 Support the Mikrotik(tm) RouterBoard 532 series, 979 based on the IDT RC32434 SoC. 980 981config CAVIUM_OCTEON_SOC 982 bool "Cavium Networks Octeon SoC based boards" 983 select CEVT_R4K 984 select ARCH_HAS_PHYS_TO_DMA 985 select HAVE_RAPIDIO 986 select PHYS_ADDR_T_64BIT 987 select SYS_SUPPORTS_64BIT_KERNEL 988 select SYS_SUPPORTS_BIG_ENDIAN 989 select EDAC_SUPPORT 990 select EDAC_ATOMIC_SCRUB 991 select SYS_SUPPORTS_LITTLE_ENDIAN 992 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 993 select SYS_HAS_EARLY_PRINTK 994 select SYS_HAS_CPU_CAVIUM_OCTEON 995 select HAVE_PCI 996 select HAVE_PLAT_DELAY 997 select HAVE_PLAT_FW_INIT_CMDLINE 998 select HAVE_PLAT_MEMCPY 999 select ZONE_DMA32 1000 select HOLES_IN_ZONE 1001 select GPIOLIB 1002 select USE_OF 1003 select ARCH_SPARSEMEM_ENABLE 1004 select SYS_SUPPORTS_SMP 1005 select NR_CPUS_DEFAULT_64 1006 select MIPS_NR_CPU_NR_MAP_1024 1007 select BUILTIN_DTB 1008 select MTD 1009 select MTD_COMPLEX_MAPPINGS 1010 select SWIOTLB 1011 select SYS_SUPPORTS_RELOCATABLE 1012 help 1013 This option supports all of the Octeon reference boards from Cavium 1014 Networks. It builds a kernel that dynamically determines the Octeon 1015 CPU type and supports all known board reference implementations. 1016 Some of the supported boards are: 1017 EBT3000 1018 EBH3000 1019 EBH3100 1020 Thunder 1021 Kodama 1022 Hikari 1023 Say Y here for most Octeon reference boards. 1024 1025config NLM_XLR_BOARD 1026 bool "Netlogic XLR/XLS based systems" 1027 select BOOT_ELF32 1028 select NLM_COMMON 1029 select SYS_HAS_CPU_XLR 1030 select SYS_SUPPORTS_SMP 1031 select HAVE_PCI 1032 select SWAP_IO_SPACE 1033 select SYS_SUPPORTS_32BIT_KERNEL 1034 select SYS_SUPPORTS_64BIT_KERNEL 1035 select PHYS_ADDR_T_64BIT 1036 select SYS_SUPPORTS_BIG_ENDIAN 1037 select SYS_SUPPORTS_HIGHMEM 1038 select NR_CPUS_DEFAULT_32 1039 select CEVT_R4K 1040 select CSRC_R4K 1041 select IRQ_MIPS_CPU 1042 select ZONE_DMA32 if 64BIT 1043 select SYNC_R4K 1044 select SYS_HAS_EARLY_PRINTK 1045 select SYS_SUPPORTS_ZBOOT 1046 select SYS_SUPPORTS_ZBOOT_UART16550 1047 help 1048 Support for systems based on Netlogic XLR and XLS processors. 1049 Say Y here if you have a XLR or XLS based board. 1050 1051config NLM_XLP_BOARD 1052 bool "Netlogic XLP based systems" 1053 select BOOT_ELF32 1054 select NLM_COMMON 1055 select SYS_HAS_CPU_XLP 1056 select SYS_SUPPORTS_SMP 1057 select HAVE_PCI 1058 select SYS_SUPPORTS_32BIT_KERNEL 1059 select SYS_SUPPORTS_64BIT_KERNEL 1060 select PHYS_ADDR_T_64BIT 1061 select GPIOLIB 1062 select SYS_SUPPORTS_BIG_ENDIAN 1063 select SYS_SUPPORTS_LITTLE_ENDIAN 1064 select SYS_SUPPORTS_HIGHMEM 1065 select NR_CPUS_DEFAULT_32 1066 select CEVT_R4K 1067 select CSRC_R4K 1068 select IRQ_MIPS_CPU 1069 select ZONE_DMA32 if 64BIT 1070 select SYNC_R4K 1071 select SYS_HAS_EARLY_PRINTK 1072 select USE_OF 1073 select SYS_SUPPORTS_ZBOOT 1074 select SYS_SUPPORTS_ZBOOT_UART16550 1075 help 1076 This board is based on Netlogic XLP Processor. 1077 Say Y here if you have a XLP based board. 1078 1079endchoice 1080 1081source "arch/mips/alchemy/Kconfig" 1082source "arch/mips/ath25/Kconfig" 1083source "arch/mips/ath79/Kconfig" 1084source "arch/mips/bcm47xx/Kconfig" 1085source "arch/mips/bcm63xx/Kconfig" 1086source "arch/mips/bmips/Kconfig" 1087source "arch/mips/generic/Kconfig" 1088source "arch/mips/ingenic/Kconfig" 1089source "arch/mips/jazz/Kconfig" 1090source "arch/mips/lantiq/Kconfig" 1091source "arch/mips/pic32/Kconfig" 1092source "arch/mips/pistachio/Kconfig" 1093source "arch/mips/ralink/Kconfig" 1094source "arch/mips/sgi-ip27/Kconfig" 1095source "arch/mips/sibyte/Kconfig" 1096source "arch/mips/txx9/Kconfig" 1097source "arch/mips/vr41xx/Kconfig" 1098source "arch/mips/cavium-octeon/Kconfig" 1099source "arch/mips/loongson2ef/Kconfig" 1100source "arch/mips/loongson32/Kconfig" 1101source "arch/mips/loongson64/Kconfig" 1102source "arch/mips/netlogic/Kconfig" 1103 1104endmenu 1105 1106config GENERIC_HWEIGHT 1107 bool 1108 default y 1109 1110config GENERIC_CALIBRATE_DELAY 1111 bool 1112 default y 1113 1114config SCHED_OMIT_FRAME_POINTER 1115 bool 1116 default y 1117 1118# 1119# Select some configuration options automatically based on user selections. 1120# 1121config FW_ARC 1122 bool 1123 1124config ARCH_MAY_HAVE_PC_FDC 1125 bool 1126 1127config BOOT_RAW 1128 bool 1129 1130config CEVT_BCM1480 1131 bool 1132 1133config CEVT_DS1287 1134 bool 1135 1136config CEVT_GT641XX 1137 bool 1138 1139config CEVT_R4K 1140 bool 1141 1142config CEVT_SB1250 1143 bool 1144 1145config CEVT_TXX9 1146 bool 1147 1148config CSRC_BCM1480 1149 bool 1150 1151config CSRC_IOASIC 1152 bool 1153 1154config CSRC_R4K 1155 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1156 bool 1157 1158config CSRC_SB1250 1159 bool 1160 1161config MIPS_CLOCK_VSYSCALL 1162 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1163 1164config GPIO_TXX9 1165 select GPIOLIB 1166 bool 1167 1168config FW_CFE 1169 bool 1170 1171config ARCH_SUPPORTS_UPROBES 1172 bool 1173 1174config DMA_PERDEV_COHERENT 1175 bool 1176 select ARCH_HAS_SETUP_DMA_OPS 1177 select DMA_NONCOHERENT 1178 1179config DMA_NONCOHERENT 1180 bool 1181 # 1182 # MIPS allows mixing "slightly different" Cacheability and Coherency 1183 # Attribute bits. It is believed that the uncached access through 1184 # KSEG1 and the implementation specific "uncached accelerated" used 1185 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1186 # significant advantages. 1187 # 1188 select ARCH_HAS_DMA_WRITE_COMBINE 1189 select ARCH_HAS_DMA_PREP_COHERENT 1190 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1191 select ARCH_HAS_DMA_SET_UNCACHED 1192 select DMA_NONCOHERENT_MMAP 1193 select NEED_DMA_MAP_STATE 1194 1195config SYS_HAS_EARLY_PRINTK 1196 bool 1197 1198config SYS_SUPPORTS_HOTPLUG_CPU 1199 bool 1200 1201config MIPS_BONITO64 1202 bool 1203 1204config MIPS_MSC 1205 bool 1206 1207config SYNC_R4K 1208 bool 1209 1210config NO_IOPORT_MAP 1211 def_bool n 1212 1213config GENERIC_CSUM 1214 def_bool CPU_NO_LOAD_STORE_LR 1215 1216config GENERIC_ISA_DMA 1217 bool 1218 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1219 select ISA_DMA_API 1220 1221config GENERIC_ISA_DMA_SUPPORT_BROKEN 1222 bool 1223 select GENERIC_ISA_DMA 1224 1225config HAVE_PLAT_DELAY 1226 bool 1227 1228config HAVE_PLAT_FW_INIT_CMDLINE 1229 bool 1230 1231config HAVE_PLAT_MEMCPY 1232 bool 1233 1234config ISA_DMA_API 1235 bool 1236 1237config HOLES_IN_ZONE 1238 bool 1239 1240config SYS_SUPPORTS_RELOCATABLE 1241 bool 1242 help 1243 Selected if the platform supports relocating the kernel. 1244 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1245 to allow access to command line and entropy sources. 1246 1247config MIPS_CBPF_JIT 1248 def_bool y 1249 depends on BPF_JIT && HAVE_CBPF_JIT 1250 1251config MIPS_EBPF_JIT 1252 def_bool y 1253 depends on BPF_JIT && HAVE_EBPF_JIT 1254 1255 1256# 1257# Endianness selection. Sufficiently obscure so many users don't know what to 1258# answer,so we try hard to limit the available choices. Also the use of a 1259# choice statement should be more obvious to the user. 1260# 1261choice 1262 prompt "Endianness selection" 1263 help 1264 Some MIPS machines can be configured for either little or big endian 1265 byte order. These modes require different kernels and a different 1266 Linux distribution. In general there is one preferred byteorder for a 1267 particular system but some systems are just as commonly used in the 1268 one or the other endianness. 1269 1270config CPU_BIG_ENDIAN 1271 bool "Big endian" 1272 depends on SYS_SUPPORTS_BIG_ENDIAN 1273 1274config CPU_LITTLE_ENDIAN 1275 bool "Little endian" 1276 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1277 1278endchoice 1279 1280config EXPORT_UASM 1281 bool 1282 1283config SYS_SUPPORTS_APM_EMULATION 1284 bool 1285 1286config SYS_SUPPORTS_BIG_ENDIAN 1287 bool 1288 1289config SYS_SUPPORTS_LITTLE_ENDIAN 1290 bool 1291 1292config MIPS_HUGE_TLB_SUPPORT 1293 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1294 1295config IRQ_MSP_SLP 1296 bool 1297 1298config IRQ_MSP_CIC 1299 bool 1300 1301config IRQ_TXX9 1302 bool 1303 1304config IRQ_GT641XX 1305 bool 1306 1307config PCI_GT64XXX_PCI0 1308 bool 1309 1310config PCI_XTALK_BRIDGE 1311 bool 1312 1313config NO_EXCEPT_FILL 1314 bool 1315 1316config MIPS_SPRAM 1317 bool 1318 1319config SWAP_IO_SPACE 1320 bool 1321 1322config SGI_HAS_INDYDOG 1323 bool 1324 1325config SGI_HAS_HAL2 1326 bool 1327 1328config SGI_HAS_SEEQ 1329 bool 1330 1331config SGI_HAS_WD93 1332 bool 1333 1334config SGI_HAS_ZILOG 1335 bool 1336 1337config SGI_HAS_I8042 1338 bool 1339 1340config DEFAULT_SGI_PARTITION 1341 bool 1342 1343config FW_ARC32 1344 bool 1345 1346config FW_SNIPROM 1347 bool 1348 1349config BOOT_ELF32 1350 bool 1351 1352config MIPS_L1_CACHE_SHIFT_4 1353 bool 1354 1355config MIPS_L1_CACHE_SHIFT_5 1356 bool 1357 1358config MIPS_L1_CACHE_SHIFT_6 1359 bool 1360 1361config MIPS_L1_CACHE_SHIFT_7 1362 bool 1363 1364config MIPS_L1_CACHE_SHIFT 1365 int 1366 default "7" if MIPS_L1_CACHE_SHIFT_7 1367 default "6" if MIPS_L1_CACHE_SHIFT_6 1368 default "5" if MIPS_L1_CACHE_SHIFT_5 1369 default "4" if MIPS_L1_CACHE_SHIFT_4 1370 default "5" 1371 1372config ARC_CMDLINE_ONLY 1373 bool 1374 1375config ARC_CONSOLE 1376 bool "ARC console support" 1377 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1378 1379config ARC_MEMORY 1380 bool 1381 1382config ARC_PROMLIB 1383 bool 1384 1385config FW_ARC64 1386 bool 1387 1388config BOOT_ELF64 1389 bool 1390 1391menu "CPU selection" 1392 1393choice 1394 prompt "CPU type" 1395 default CPU_R4X00 1396 1397config CPU_LOONGSON64 1398 bool "Loongson 64-bit CPU" 1399 depends on SYS_HAS_CPU_LOONGSON64 1400 select ARCH_HAS_PHYS_TO_DMA 1401 select CPU_MIPSR2 1402 select CPU_HAS_PREFETCH 1403 select CPU_SUPPORTS_64BIT_KERNEL 1404 select CPU_SUPPORTS_HIGHMEM 1405 select CPU_SUPPORTS_HUGEPAGES 1406 select CPU_SUPPORTS_MSA 1407 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1408 select CPU_MIPSR2_IRQ_VI 1409 select WEAK_ORDERING 1410 select WEAK_REORDERING_BEYOND_LLSC 1411 select MIPS_ASID_BITS_VARIABLE 1412 select MIPS_PGD_C0_CONTEXT 1413 select MIPS_L1_CACHE_SHIFT_6 1414 select GPIOLIB 1415 select SWIOTLB 1416 select HAVE_KVM 1417 help 1418 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1419 cores implements the MIPS64R2 instruction set with many extensions, 1420 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1421 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1422 Loongson-2E/2F is not covered here and will be removed in future. 1423 1424config LOONGSON3_ENHANCEMENT 1425 bool "New Loongson-3 CPU Enhancements" 1426 default n 1427 depends on CPU_LOONGSON64 1428 help 1429 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1430 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1431 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1432 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1433 Fast TLB refill support, etc. 1434 1435 This option enable those enhancements which are not probed at run 1436 time. If you want a generic kernel to run on all Loongson 3 machines, 1437 please say 'N' here. If you want a high-performance kernel to run on 1438 new Loongson-3 machines only, please say 'Y' here. 1439 1440config CPU_LOONGSON3_WORKAROUNDS 1441 bool "Old Loongson-3 LLSC Workarounds" 1442 default y if SMP 1443 depends on CPU_LOONGSON64 1444 help 1445 Loongson-3 processors have the llsc issues which require workarounds. 1446 Without workarounds the system may hang unexpectedly. 1447 1448 Newer Loongson-3 will fix these issues and no workarounds are needed. 1449 The workarounds have no significant side effect on them but may 1450 decrease the performance of the system so this option should be 1451 disabled unless the kernel is intended to be run on old systems. 1452 1453 If unsure, please say Y. 1454 1455config CPU_LOONGSON3_CPUCFG_EMULATION 1456 bool "Emulate the CPUCFG instruction on older Loongson cores" 1457 default y 1458 depends on CPU_LOONGSON64 1459 help 1460 Loongson-3A R4 and newer have the CPUCFG instruction available for 1461 userland to query CPU capabilities, much like CPUID on x86. This 1462 option provides emulation of the instruction on older Loongson 1463 cores, back to Loongson-3A1000. 1464 1465 If unsure, please say Y. 1466 1467config CPU_LOONGSON2E 1468 bool "Loongson 2E" 1469 depends on SYS_HAS_CPU_LOONGSON2E 1470 select CPU_LOONGSON2EF 1471 help 1472 The Loongson 2E processor implements the MIPS III instruction set 1473 with many extensions. 1474 1475 It has an internal FPGA northbridge, which is compatible to 1476 bonito64. 1477 1478config CPU_LOONGSON2F 1479 bool "Loongson 2F" 1480 depends on SYS_HAS_CPU_LOONGSON2F 1481 select CPU_LOONGSON2EF 1482 select GPIOLIB 1483 help 1484 The Loongson 2F processor implements the MIPS III instruction set 1485 with many extensions. 1486 1487 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1488 have a similar programming interface with FPGA northbridge used in 1489 Loongson2E. 1490 1491config CPU_LOONGSON1B 1492 bool "Loongson 1B" 1493 depends on SYS_HAS_CPU_LOONGSON1B 1494 select CPU_LOONGSON32 1495 select LEDS_GPIO_REGISTER 1496 help 1497 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1498 Release 1 instruction set and part of the MIPS32 Release 2 1499 instruction set. 1500 1501config CPU_LOONGSON1C 1502 bool "Loongson 1C" 1503 depends on SYS_HAS_CPU_LOONGSON1C 1504 select CPU_LOONGSON32 1505 select LEDS_GPIO_REGISTER 1506 help 1507 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1508 Release 1 instruction set and part of the MIPS32 Release 2 1509 instruction set. 1510 1511config CPU_MIPS32_R1 1512 bool "MIPS32 Release 1" 1513 depends on SYS_HAS_CPU_MIPS32_R1 1514 select CPU_HAS_PREFETCH 1515 select CPU_SUPPORTS_32BIT_KERNEL 1516 select CPU_SUPPORTS_HIGHMEM 1517 help 1518 Choose this option to build a kernel for release 1 or later of the 1519 MIPS32 architecture. Most modern embedded systems with a 32-bit 1520 MIPS processor are based on a MIPS32 processor. If you know the 1521 specific type of processor in your system, choose those that one 1522 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1523 Release 2 of the MIPS32 architecture is available since several 1524 years so chances are you even have a MIPS32 Release 2 processor 1525 in which case you should choose CPU_MIPS32_R2 instead for better 1526 performance. 1527 1528config CPU_MIPS32_R2 1529 bool "MIPS32 Release 2" 1530 depends on SYS_HAS_CPU_MIPS32_R2 1531 select CPU_HAS_PREFETCH 1532 select CPU_SUPPORTS_32BIT_KERNEL 1533 select CPU_SUPPORTS_HIGHMEM 1534 select CPU_SUPPORTS_MSA 1535 select HAVE_KVM 1536 help 1537 Choose this option to build a kernel for release 2 or later of the 1538 MIPS32 architecture. Most modern embedded systems with a 32-bit 1539 MIPS processor are based on a MIPS32 processor. If you know the 1540 specific type of processor in your system, choose those that one 1541 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1542 1543config CPU_MIPS32_R5 1544 bool "MIPS32 Release 5" 1545 depends on SYS_HAS_CPU_MIPS32_R5 1546 select CPU_HAS_PREFETCH 1547 select CPU_SUPPORTS_32BIT_KERNEL 1548 select CPU_SUPPORTS_HIGHMEM 1549 select CPU_SUPPORTS_MSA 1550 select HAVE_KVM 1551 select MIPS_O32_FP64_SUPPORT 1552 help 1553 Choose this option to build a kernel for release 5 or later of the 1554 MIPS32 architecture. New MIPS processors, starting with the Warrior 1555 family, are based on a MIPS32r5 processor. If you own an older 1556 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1557 1558config CPU_MIPS32_R6 1559 bool "MIPS32 Release 6" 1560 depends on SYS_HAS_CPU_MIPS32_R6 1561 select CPU_HAS_PREFETCH 1562 select CPU_NO_LOAD_STORE_LR 1563 select CPU_SUPPORTS_32BIT_KERNEL 1564 select CPU_SUPPORTS_HIGHMEM 1565 select CPU_SUPPORTS_MSA 1566 select HAVE_KVM 1567 select MIPS_O32_FP64_SUPPORT 1568 help 1569 Choose this option to build a kernel for release 6 or later of the 1570 MIPS32 architecture. New MIPS processors, starting with the Warrior 1571 family, are based on a MIPS32r6 processor. If you own an older 1572 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1573 1574config CPU_MIPS64_R1 1575 bool "MIPS64 Release 1" 1576 depends on SYS_HAS_CPU_MIPS64_R1 1577 select CPU_HAS_PREFETCH 1578 select CPU_SUPPORTS_32BIT_KERNEL 1579 select CPU_SUPPORTS_64BIT_KERNEL 1580 select CPU_SUPPORTS_HIGHMEM 1581 select CPU_SUPPORTS_HUGEPAGES 1582 help 1583 Choose this option to build a kernel for release 1 or later of the 1584 MIPS64 architecture. Many modern embedded systems with a 64-bit 1585 MIPS processor are based on a MIPS64 processor. If you know the 1586 specific type of processor in your system, choose those that one 1587 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1588 Release 2 of the MIPS64 architecture is available since several 1589 years so chances are you even have a MIPS64 Release 2 processor 1590 in which case you should choose CPU_MIPS64_R2 instead for better 1591 performance. 1592 1593config CPU_MIPS64_R2 1594 bool "MIPS64 Release 2" 1595 depends on SYS_HAS_CPU_MIPS64_R2 1596 select CPU_HAS_PREFETCH 1597 select CPU_SUPPORTS_32BIT_KERNEL 1598 select CPU_SUPPORTS_64BIT_KERNEL 1599 select CPU_SUPPORTS_HIGHMEM 1600 select CPU_SUPPORTS_HUGEPAGES 1601 select CPU_SUPPORTS_MSA 1602 select HAVE_KVM 1603 help 1604 Choose this option to build a kernel for release 2 or later of the 1605 MIPS64 architecture. Many modern embedded systems with a 64-bit 1606 MIPS processor are based on a MIPS64 processor. If you know the 1607 specific type of processor in your system, choose those that one 1608 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1609 1610config CPU_MIPS64_R5 1611 bool "MIPS64 Release 5" 1612 depends on SYS_HAS_CPU_MIPS64_R5 1613 select CPU_HAS_PREFETCH 1614 select CPU_SUPPORTS_32BIT_KERNEL 1615 select CPU_SUPPORTS_64BIT_KERNEL 1616 select CPU_SUPPORTS_HIGHMEM 1617 select CPU_SUPPORTS_HUGEPAGES 1618 select CPU_SUPPORTS_MSA 1619 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1620 select HAVE_KVM 1621 help 1622 Choose this option to build a kernel for release 5 or later of the 1623 MIPS64 architecture. This is a intermediate MIPS architecture 1624 release partly implementing release 6 features. Though there is no 1625 any hardware known to be based on this release. 1626 1627config CPU_MIPS64_R6 1628 bool "MIPS64 Release 6" 1629 depends on SYS_HAS_CPU_MIPS64_R6 1630 select CPU_HAS_PREFETCH 1631 select CPU_NO_LOAD_STORE_LR 1632 select CPU_SUPPORTS_32BIT_KERNEL 1633 select CPU_SUPPORTS_64BIT_KERNEL 1634 select CPU_SUPPORTS_HIGHMEM 1635 select CPU_SUPPORTS_HUGEPAGES 1636 select CPU_SUPPORTS_MSA 1637 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1638 select HAVE_KVM 1639 help 1640 Choose this option to build a kernel for release 6 or later of the 1641 MIPS64 architecture. New MIPS processors, starting with the Warrior 1642 family, are based on a MIPS64r6 processor. If you own an older 1643 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1644 1645config CPU_P5600 1646 bool "MIPS Warrior P5600" 1647 depends on SYS_HAS_CPU_P5600 1648 select CPU_HAS_PREFETCH 1649 select CPU_SUPPORTS_32BIT_KERNEL 1650 select CPU_SUPPORTS_HIGHMEM 1651 select CPU_SUPPORTS_MSA 1652 select CPU_SUPPORTS_CPUFREQ 1653 select CPU_MIPSR2_IRQ_VI 1654 select CPU_MIPSR2_IRQ_EI 1655 select HAVE_KVM 1656 select MIPS_O32_FP64_SUPPORT 1657 help 1658 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1659 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1660 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1661 level features like up to six P5600 calculation cores, CM2 with L2 1662 cache, IOCU/IOMMU (though might be unused depending on the system- 1663 specific IP core configuration), GIC, CPC, virtualisation module, 1664 eJTAG and PDtrace. 1665 1666config CPU_R3000 1667 bool "R3000" 1668 depends on SYS_HAS_CPU_R3000 1669 select CPU_HAS_WB 1670 select CPU_R3K_TLB 1671 select CPU_SUPPORTS_32BIT_KERNEL 1672 select CPU_SUPPORTS_HIGHMEM 1673 help 1674 Please make sure to pick the right CPU type. Linux/MIPS is not 1675 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1676 *not* work on R4000 machines and vice versa. However, since most 1677 of the supported machines have an R4000 (or similar) CPU, R4x00 1678 might be a safe bet. If the resulting kernel does not work, 1679 try to recompile with R3000. 1680 1681config CPU_TX39XX 1682 bool "R39XX" 1683 depends on SYS_HAS_CPU_TX39XX 1684 select CPU_SUPPORTS_32BIT_KERNEL 1685 select CPU_R3K_TLB 1686 1687config CPU_VR41XX 1688 bool "R41xx" 1689 depends on SYS_HAS_CPU_VR41XX 1690 select CPU_SUPPORTS_32BIT_KERNEL 1691 select CPU_SUPPORTS_64BIT_KERNEL 1692 help 1693 The options selects support for the NEC VR4100 series of processors. 1694 Only choose this option if you have one of these processors as a 1695 kernel built with this option will not run on any other type of 1696 processor or vice versa. 1697 1698config CPU_R4300 1699 bool "R4300" 1700 depends on SYS_HAS_CPU_R4300 1701 select CPU_SUPPORTS_32BIT_KERNEL 1702 select CPU_SUPPORTS_64BIT_KERNEL 1703 select CPU_HAS_LOAD_STORE_LR 1704 help 1705 MIPS Technologies R4300-series processors. 1706 1707config CPU_R4X00 1708 bool "R4x00" 1709 depends on SYS_HAS_CPU_R4X00 1710 select CPU_SUPPORTS_32BIT_KERNEL 1711 select CPU_SUPPORTS_64BIT_KERNEL 1712 select CPU_SUPPORTS_HUGEPAGES 1713 help 1714 MIPS Technologies R4000-series processors other than 4300, including 1715 the R4000, R4400, R4600, and 4700. 1716 1717config CPU_TX49XX 1718 bool "R49XX" 1719 depends on SYS_HAS_CPU_TX49XX 1720 select CPU_HAS_PREFETCH 1721 select CPU_SUPPORTS_32BIT_KERNEL 1722 select CPU_SUPPORTS_64BIT_KERNEL 1723 select CPU_SUPPORTS_HUGEPAGES 1724 1725config CPU_R5000 1726 bool "R5000" 1727 depends on SYS_HAS_CPU_R5000 1728 select CPU_SUPPORTS_32BIT_KERNEL 1729 select CPU_SUPPORTS_64BIT_KERNEL 1730 select CPU_SUPPORTS_HUGEPAGES 1731 help 1732 MIPS Technologies R5000-series processors other than the Nevada. 1733 1734config CPU_R5500 1735 bool "R5500" 1736 depends on SYS_HAS_CPU_R5500 1737 select CPU_SUPPORTS_32BIT_KERNEL 1738 select CPU_SUPPORTS_64BIT_KERNEL 1739 select CPU_SUPPORTS_HUGEPAGES 1740 help 1741 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1742 instruction set. 1743 1744config CPU_NEVADA 1745 bool "RM52xx" 1746 depends on SYS_HAS_CPU_NEVADA 1747 select CPU_SUPPORTS_32BIT_KERNEL 1748 select CPU_SUPPORTS_64BIT_KERNEL 1749 select CPU_SUPPORTS_HUGEPAGES 1750 help 1751 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1752 1753config CPU_R10000 1754 bool "R10000" 1755 depends on SYS_HAS_CPU_R10000 1756 select CPU_HAS_PREFETCH 1757 select CPU_SUPPORTS_32BIT_KERNEL 1758 select CPU_SUPPORTS_64BIT_KERNEL 1759 select CPU_SUPPORTS_HIGHMEM 1760 select CPU_SUPPORTS_HUGEPAGES 1761 help 1762 MIPS Technologies R10000-series processors. 1763 1764config CPU_RM7000 1765 bool "RM7000" 1766 depends on SYS_HAS_CPU_RM7000 1767 select CPU_HAS_PREFETCH 1768 select CPU_SUPPORTS_32BIT_KERNEL 1769 select CPU_SUPPORTS_64BIT_KERNEL 1770 select CPU_SUPPORTS_HIGHMEM 1771 select CPU_SUPPORTS_HUGEPAGES 1772 1773config CPU_SB1 1774 bool "SB1" 1775 depends on SYS_HAS_CPU_SB1 1776 select CPU_SUPPORTS_32BIT_KERNEL 1777 select CPU_SUPPORTS_64BIT_KERNEL 1778 select CPU_SUPPORTS_HIGHMEM 1779 select CPU_SUPPORTS_HUGEPAGES 1780 select WEAK_ORDERING 1781 1782config CPU_CAVIUM_OCTEON 1783 bool "Cavium Octeon processor" 1784 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1785 select CPU_HAS_PREFETCH 1786 select CPU_SUPPORTS_64BIT_KERNEL 1787 select WEAK_ORDERING 1788 select CPU_SUPPORTS_HIGHMEM 1789 select CPU_SUPPORTS_HUGEPAGES 1790 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1791 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1792 select MIPS_L1_CACHE_SHIFT_7 1793 select HAVE_KVM 1794 help 1795 The Cavium Octeon processor is a highly integrated chip containing 1796 many ethernet hardware widgets for networking tasks. The processor 1797 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1798 Full details can be found at http://www.caviumnetworks.com. 1799 1800config CPU_BMIPS 1801 bool "Broadcom BMIPS" 1802 depends on SYS_HAS_CPU_BMIPS 1803 select CPU_MIPS32 1804 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1805 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1806 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1807 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1808 select CPU_SUPPORTS_32BIT_KERNEL 1809 select DMA_NONCOHERENT 1810 select IRQ_MIPS_CPU 1811 select SWAP_IO_SPACE 1812 select WEAK_ORDERING 1813 select CPU_SUPPORTS_HIGHMEM 1814 select CPU_HAS_PREFETCH 1815 select CPU_SUPPORTS_CPUFREQ 1816 select MIPS_EXTERNAL_TIMER 1817 help 1818 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1819 1820config CPU_XLR 1821 bool "Netlogic XLR SoC" 1822 depends on SYS_HAS_CPU_XLR 1823 select CPU_SUPPORTS_32BIT_KERNEL 1824 select CPU_SUPPORTS_64BIT_KERNEL 1825 select CPU_SUPPORTS_HIGHMEM 1826 select CPU_SUPPORTS_HUGEPAGES 1827 select WEAK_ORDERING 1828 select WEAK_REORDERING_BEYOND_LLSC 1829 help 1830 Netlogic Microsystems XLR/XLS processors. 1831 1832config CPU_XLP 1833 bool "Netlogic XLP SoC" 1834 depends on SYS_HAS_CPU_XLP 1835 select CPU_SUPPORTS_32BIT_KERNEL 1836 select CPU_SUPPORTS_64BIT_KERNEL 1837 select CPU_SUPPORTS_HIGHMEM 1838 select WEAK_ORDERING 1839 select WEAK_REORDERING_BEYOND_LLSC 1840 select CPU_HAS_PREFETCH 1841 select CPU_MIPSR2 1842 select CPU_SUPPORTS_HUGEPAGES 1843 select MIPS_ASID_BITS_VARIABLE 1844 help 1845 Netlogic Microsystems XLP processors. 1846endchoice 1847 1848config CPU_MIPS32_3_5_FEATURES 1849 bool "MIPS32 Release 3.5 Features" 1850 depends on SYS_HAS_CPU_MIPS32_R3_5 1851 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1852 CPU_P5600 1853 help 1854 Choose this option to build a kernel for release 2 or later of the 1855 MIPS32 architecture including features from the 3.5 release such as 1856 support for Enhanced Virtual Addressing (EVA). 1857 1858config CPU_MIPS32_3_5_EVA 1859 bool "Enhanced Virtual Addressing (EVA)" 1860 depends on CPU_MIPS32_3_5_FEATURES 1861 select EVA 1862 default y 1863 help 1864 Choose this option if you want to enable the Enhanced Virtual 1865 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1866 One of its primary benefits is an increase in the maximum size 1867 of lowmem (up to 3GB). If unsure, say 'N' here. 1868 1869config CPU_MIPS32_R5_FEATURES 1870 bool "MIPS32 Release 5 Features" 1871 depends on SYS_HAS_CPU_MIPS32_R5 1872 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1873 help 1874 Choose this option to build a kernel for release 2 or later of the 1875 MIPS32 architecture including features from release 5 such as 1876 support for Extended Physical Addressing (XPA). 1877 1878config CPU_MIPS32_R5_XPA 1879 bool "Extended Physical Addressing (XPA)" 1880 depends on CPU_MIPS32_R5_FEATURES 1881 depends on !EVA 1882 depends on !PAGE_SIZE_4KB 1883 depends on SYS_SUPPORTS_HIGHMEM 1884 select XPA 1885 select HIGHMEM 1886 select PHYS_ADDR_T_64BIT 1887 default n 1888 help 1889 Choose this option if you want to enable the Extended Physical 1890 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1891 benefit is to increase physical addressing equal to or greater 1892 than 40 bits. Note that this has the side effect of turning on 1893 64-bit addressing which in turn makes the PTEs 64-bit in size. 1894 If unsure, say 'N' here. 1895 1896if CPU_LOONGSON2F 1897config CPU_NOP_WORKAROUNDS 1898 bool 1899 1900config CPU_JUMP_WORKAROUNDS 1901 bool 1902 1903config CPU_LOONGSON2F_WORKAROUNDS 1904 bool "Loongson 2F Workarounds" 1905 default y 1906 select CPU_NOP_WORKAROUNDS 1907 select CPU_JUMP_WORKAROUNDS 1908 help 1909 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1910 require workarounds. Without workarounds the system may hang 1911 unexpectedly. For more information please refer to the gas 1912 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1913 1914 Loongson 2F03 and later have fixed these issues and no workarounds 1915 are needed. The workarounds have no significant side effect on them 1916 but may decrease the performance of the system so this option should 1917 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1918 systems. 1919 1920 If unsure, please say Y. 1921endif # CPU_LOONGSON2F 1922 1923config SYS_SUPPORTS_ZBOOT 1924 bool 1925 select HAVE_KERNEL_GZIP 1926 select HAVE_KERNEL_BZIP2 1927 select HAVE_KERNEL_LZ4 1928 select HAVE_KERNEL_LZMA 1929 select HAVE_KERNEL_LZO 1930 select HAVE_KERNEL_XZ 1931 select HAVE_KERNEL_ZSTD 1932 1933config SYS_SUPPORTS_ZBOOT_UART16550 1934 bool 1935 select SYS_SUPPORTS_ZBOOT 1936 1937config SYS_SUPPORTS_ZBOOT_UART_PROM 1938 bool 1939 select SYS_SUPPORTS_ZBOOT 1940 1941config CPU_LOONGSON2EF 1942 bool 1943 select CPU_SUPPORTS_32BIT_KERNEL 1944 select CPU_SUPPORTS_64BIT_KERNEL 1945 select CPU_SUPPORTS_HIGHMEM 1946 select CPU_SUPPORTS_HUGEPAGES 1947 select ARCH_HAS_PHYS_TO_DMA 1948 1949config CPU_LOONGSON32 1950 bool 1951 select CPU_MIPS32 1952 select CPU_MIPSR2 1953 select CPU_HAS_PREFETCH 1954 select CPU_SUPPORTS_32BIT_KERNEL 1955 select CPU_SUPPORTS_HIGHMEM 1956 select CPU_SUPPORTS_CPUFREQ 1957 1958config CPU_BMIPS32_3300 1959 select SMP_UP if SMP 1960 bool 1961 1962config CPU_BMIPS4350 1963 bool 1964 select SYS_SUPPORTS_SMP 1965 select SYS_SUPPORTS_HOTPLUG_CPU 1966 1967config CPU_BMIPS4380 1968 bool 1969 select MIPS_L1_CACHE_SHIFT_6 1970 select SYS_SUPPORTS_SMP 1971 select SYS_SUPPORTS_HOTPLUG_CPU 1972 select CPU_HAS_RIXI 1973 1974config CPU_BMIPS5000 1975 bool 1976 select MIPS_CPU_SCACHE 1977 select MIPS_L1_CACHE_SHIFT_7 1978 select SYS_SUPPORTS_SMP 1979 select SYS_SUPPORTS_HOTPLUG_CPU 1980 select CPU_HAS_RIXI 1981 1982config SYS_HAS_CPU_LOONGSON64 1983 bool 1984 select CPU_SUPPORTS_CPUFREQ 1985 select CPU_HAS_RIXI 1986 1987config SYS_HAS_CPU_LOONGSON2E 1988 bool 1989 1990config SYS_HAS_CPU_LOONGSON2F 1991 bool 1992 select CPU_SUPPORTS_CPUFREQ 1993 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1994 1995config SYS_HAS_CPU_LOONGSON1B 1996 bool 1997 1998config SYS_HAS_CPU_LOONGSON1C 1999 bool 2000 2001config SYS_HAS_CPU_MIPS32_R1 2002 bool 2003 2004config SYS_HAS_CPU_MIPS32_R2 2005 bool 2006 2007config SYS_HAS_CPU_MIPS32_R3_5 2008 bool 2009 2010config SYS_HAS_CPU_MIPS32_R5 2011 bool 2012 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2013 2014config SYS_HAS_CPU_MIPS32_R6 2015 bool 2016 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2017 2018config SYS_HAS_CPU_MIPS64_R1 2019 bool 2020 2021config SYS_HAS_CPU_MIPS64_R2 2022 bool 2023 2024config SYS_HAS_CPU_MIPS64_R6 2025 bool 2026 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2027 2028config SYS_HAS_CPU_P5600 2029 bool 2030 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2031 2032config SYS_HAS_CPU_R3000 2033 bool 2034 2035config SYS_HAS_CPU_TX39XX 2036 bool 2037 2038config SYS_HAS_CPU_VR41XX 2039 bool 2040 2041config SYS_HAS_CPU_R4300 2042 bool 2043 2044config SYS_HAS_CPU_R4X00 2045 bool 2046 2047config SYS_HAS_CPU_TX49XX 2048 bool 2049 2050config SYS_HAS_CPU_R5000 2051 bool 2052 2053config SYS_HAS_CPU_R5500 2054 bool 2055 2056config SYS_HAS_CPU_NEVADA 2057 bool 2058 2059config SYS_HAS_CPU_R10000 2060 bool 2061 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2062 2063config SYS_HAS_CPU_RM7000 2064 bool 2065 2066config SYS_HAS_CPU_SB1 2067 bool 2068 2069config SYS_HAS_CPU_CAVIUM_OCTEON 2070 bool 2071 2072config SYS_HAS_CPU_BMIPS 2073 bool 2074 2075config SYS_HAS_CPU_BMIPS32_3300 2076 bool 2077 select SYS_HAS_CPU_BMIPS 2078 2079config SYS_HAS_CPU_BMIPS4350 2080 bool 2081 select SYS_HAS_CPU_BMIPS 2082 2083config SYS_HAS_CPU_BMIPS4380 2084 bool 2085 select SYS_HAS_CPU_BMIPS 2086 2087config SYS_HAS_CPU_BMIPS5000 2088 bool 2089 select SYS_HAS_CPU_BMIPS 2090 select ARCH_HAS_SYNC_DMA_FOR_CPU 2091 2092config SYS_HAS_CPU_XLR 2093 bool 2094 2095config SYS_HAS_CPU_XLP 2096 bool 2097 2098# 2099# CPU may reorder R->R, R->W, W->R, W->W 2100# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 2101# 2102config WEAK_ORDERING 2103 bool 2104 2105# 2106# CPU may reorder reads and writes beyond LL/SC 2107# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 2108# 2109config WEAK_REORDERING_BEYOND_LLSC 2110 bool 2111endmenu 2112 2113# 2114# These two indicate any level of the MIPS32 and MIPS64 architecture 2115# 2116config CPU_MIPS32 2117 bool 2118 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 2119 CPU_MIPS32_R6 || CPU_P5600 2120 2121config CPU_MIPS64 2122 bool 2123 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2124 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON 2125 2126# 2127# These indicate the revision of the architecture 2128# 2129config CPU_MIPSR1 2130 bool 2131 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2132 2133config CPU_MIPSR2 2134 bool 2135 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2136 select CPU_HAS_RIXI 2137 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2138 select MIPS_SPRAM 2139 2140config CPU_MIPSR5 2141 bool 2142 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2143 select CPU_HAS_RIXI 2144 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2145 select MIPS_SPRAM 2146 2147config CPU_MIPSR6 2148 bool 2149 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2150 select CPU_HAS_RIXI 2151 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2152 select HAVE_ARCH_BITREVERSE 2153 select MIPS_ASID_BITS_VARIABLE 2154 select MIPS_CRC_SUPPORT 2155 select MIPS_SPRAM 2156 2157config TARGET_ISA_REV 2158 int 2159 default 1 if CPU_MIPSR1 2160 default 2 if CPU_MIPSR2 2161 default 5 if CPU_MIPSR5 2162 default 6 if CPU_MIPSR6 2163 default 0 2164 help 2165 Reflects the ISA revision being targeted by the kernel build. This 2166 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2167 2168config EVA 2169 bool 2170 2171config XPA 2172 bool 2173 2174config SYS_SUPPORTS_32BIT_KERNEL 2175 bool 2176config SYS_SUPPORTS_64BIT_KERNEL 2177 bool 2178config CPU_SUPPORTS_32BIT_KERNEL 2179 bool 2180config CPU_SUPPORTS_64BIT_KERNEL 2181 bool 2182config CPU_SUPPORTS_CPUFREQ 2183 bool 2184config CPU_SUPPORTS_ADDRWINCFG 2185 bool 2186config CPU_SUPPORTS_HUGEPAGES 2187 bool 2188 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) 2189config MIPS_PGD_C0_CONTEXT 2190 bool 2191 depends on 64BIT 2192 default y if (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP 2193 2194# 2195# Set to y for ptrace access to watch registers. 2196# 2197config HARDWARE_WATCHPOINTS 2198 bool 2199 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2200 2201menu "Kernel type" 2202 2203choice 2204 prompt "Kernel code model" 2205 help 2206 You should only select this option if you have a workload that 2207 actually benefits from 64-bit processing or if your machine has 2208 large memory. You will only be presented a single option in this 2209 menu if your system does not support both 32-bit and 64-bit kernels. 2210 2211config 32BIT 2212 bool "32-bit kernel" 2213 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2214 select TRAD_SIGNALS 2215 help 2216 Select this option if you want to build a 32-bit kernel. 2217 2218config 64BIT 2219 bool "64-bit kernel" 2220 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2221 help 2222 Select this option if you want to build a 64-bit kernel. 2223 2224endchoice 2225 2226config MIPS_VA_BITS_48 2227 bool "48 bits virtual memory" 2228 depends on 64BIT 2229 help 2230 Support a maximum at least 48 bits of application virtual 2231 memory. Default is 40 bits or less, depending on the CPU. 2232 For page sizes 16k and above, this option results in a small 2233 memory overhead for page tables. For 4k page size, a fourth 2234 level of page tables is added which imposes both a memory 2235 overhead as well as slower TLB fault handling. 2236 2237 If unsure, say N. 2238 2239choice 2240 prompt "Kernel page size" 2241 default PAGE_SIZE_4KB 2242 2243config PAGE_SIZE_4KB 2244 bool "4kB" 2245 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2246 help 2247 This option select the standard 4kB Linux page size. On some 2248 R3000-family processors this is the only available page size. Using 2249 4kB page size will minimize memory consumption and is therefore 2250 recommended for low memory systems. 2251 2252config PAGE_SIZE_8KB 2253 bool "8kB" 2254 depends on CPU_CAVIUM_OCTEON 2255 depends on !MIPS_VA_BITS_48 2256 help 2257 Using 8kB page size will result in higher performance kernel at 2258 the price of higher memory consumption. This option is available 2259 only on cnMIPS processors. Note that you will need a suitable Linux 2260 distribution to support this. 2261 2262config PAGE_SIZE_16KB 2263 bool "16kB" 2264 depends on !CPU_R3000 && !CPU_TX39XX 2265 help 2266 Using 16kB page size will result in higher performance kernel at 2267 the price of higher memory consumption. This option is available on 2268 all non-R3000 family processors. Note that you will need a suitable 2269 Linux distribution to support this. 2270 2271config PAGE_SIZE_32KB 2272 bool "32kB" 2273 depends on CPU_CAVIUM_OCTEON 2274 depends on !MIPS_VA_BITS_48 2275 help 2276 Using 32kB page size will result in higher performance kernel at 2277 the price of higher memory consumption. This option is available 2278 only on cnMIPS cores. Note that you will need a suitable Linux 2279 distribution to support this. 2280 2281config PAGE_SIZE_64KB 2282 bool "64kB" 2283 depends on !CPU_R3000 && !CPU_TX39XX 2284 help 2285 Using 64kB page size will result in higher performance kernel at 2286 the price of higher memory consumption. This option is available on 2287 all non-R3000 family processor. Not that at the time of this 2288 writing this option is still high experimental. 2289 2290endchoice 2291 2292config FORCE_MAX_ZONEORDER 2293 int "Maximum zone order" 2294 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2295 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2296 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2297 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2298 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2299 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2300 range 0 64 2301 default "11" 2302 help 2303 The kernel memory allocator divides physically contiguous memory 2304 blocks into "zones", where each zone is a power of two number of 2305 pages. This option selects the largest power of two that the kernel 2306 keeps in the memory allocator. If you need to allocate very large 2307 blocks of physically contiguous memory, then you may need to 2308 increase this value. 2309 2310 This config option is actually maximum order plus one. For example, 2311 a value of 11 means that the largest free memory block is 2^10 pages. 2312 2313 The page size is not necessarily 4KB. Keep this in mind 2314 when choosing a value for this option. 2315 2316config BOARD_SCACHE 2317 bool 2318 2319config IP22_CPU_SCACHE 2320 bool 2321 select BOARD_SCACHE 2322 2323# 2324# Support for a MIPS32 / MIPS64 style S-caches 2325# 2326config MIPS_CPU_SCACHE 2327 bool 2328 select BOARD_SCACHE 2329 2330config R5000_CPU_SCACHE 2331 bool 2332 select BOARD_SCACHE 2333 2334config RM7000_CPU_SCACHE 2335 bool 2336 select BOARD_SCACHE 2337 2338config SIBYTE_DMA_PAGEOPS 2339 bool "Use DMA to clear/copy pages" 2340 depends on CPU_SB1 2341 help 2342 Instead of using the CPU to zero and copy pages, use a Data Mover 2343 channel. These DMA channels are otherwise unused by the standard 2344 SiByte Linux port. Seems to give a small performance benefit. 2345 2346config CPU_HAS_PREFETCH 2347 bool 2348 2349config CPU_GENERIC_DUMP_TLB 2350 bool 2351 default y if !(CPU_R3000 || CPU_TX39XX) 2352 2353config MIPS_FP_SUPPORT 2354 bool "Floating Point support" if EXPERT 2355 default y 2356 help 2357 Select y to include support for floating point in the kernel 2358 including initialization of FPU hardware, FP context save & restore 2359 and emulation of an FPU where necessary. Without this support any 2360 userland program attempting to use floating point instructions will 2361 receive a SIGILL. 2362 2363 If you know that your userland will not attempt to use floating point 2364 instructions then you can say n here to shrink the kernel a little. 2365 2366 If unsure, say y. 2367 2368config CPU_R2300_FPU 2369 bool 2370 depends on MIPS_FP_SUPPORT 2371 default y if CPU_R3000 || CPU_TX39XX 2372 2373config CPU_R3K_TLB 2374 bool 2375 2376config CPU_R4K_FPU 2377 bool 2378 depends on MIPS_FP_SUPPORT 2379 default y if !CPU_R2300_FPU 2380 2381config CPU_R4K_CACHE_TLB 2382 bool 2383 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2384 2385config MIPS_MT_SMP 2386 bool "MIPS MT SMP support (1 TC on each available VPE)" 2387 default y 2388 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2389 select CPU_MIPSR2_IRQ_VI 2390 select CPU_MIPSR2_IRQ_EI 2391 select SYNC_R4K 2392 select MIPS_MT 2393 select SMP 2394 select SMP_UP 2395 select SYS_SUPPORTS_SMP 2396 select SYS_SUPPORTS_SCHED_SMT 2397 select MIPS_PERF_SHARED_TC_COUNTERS 2398 help 2399 This is a kernel model which is known as SMVP. This is supported 2400 on cores with the MT ASE and uses the available VPEs to implement 2401 virtual processors which supports SMP. This is equivalent to the 2402 Intel Hyperthreading feature. For further information go to 2403 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2404 2405config MIPS_MT 2406 bool 2407 2408config SCHED_SMT 2409 bool "SMT (multithreading) scheduler support" 2410 depends on SYS_SUPPORTS_SCHED_SMT 2411 default n 2412 help 2413 SMT scheduler support improves the CPU scheduler's decision making 2414 when dealing with MIPS MT enabled cores at a cost of slightly 2415 increased overhead in some places. If unsure say N here. 2416 2417config SYS_SUPPORTS_SCHED_SMT 2418 bool 2419 2420config SYS_SUPPORTS_MULTITHREADING 2421 bool 2422 2423config MIPS_MT_FPAFF 2424 bool "Dynamic FPU affinity for FP-intensive threads" 2425 default y 2426 depends on MIPS_MT_SMP 2427 2428config MIPSR2_TO_R6_EMULATOR 2429 bool "MIPS R2-to-R6 emulator" 2430 depends on CPU_MIPSR6 2431 depends on MIPS_FP_SUPPORT 2432 default y 2433 help 2434 Choose this option if you want to run non-R6 MIPS userland code. 2435 Even if you say 'Y' here, the emulator will still be disabled by 2436 default. You can enable it using the 'mipsr2emu' kernel option. 2437 The only reason this is a build-time option is to save ~14K from the 2438 final kernel image. 2439 2440config SYS_SUPPORTS_VPE_LOADER 2441 bool 2442 depends on SYS_SUPPORTS_MULTITHREADING 2443 help 2444 Indicates that the platform supports the VPE loader, and provides 2445 physical_memsize. 2446 2447config MIPS_VPE_LOADER 2448 bool "VPE loader support." 2449 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2450 select CPU_MIPSR2_IRQ_VI 2451 select CPU_MIPSR2_IRQ_EI 2452 select MIPS_MT 2453 help 2454 Includes a loader for loading an elf relocatable object 2455 onto another VPE and running it. 2456 2457config MIPS_VPE_LOADER_CMP 2458 bool 2459 default "y" 2460 depends on MIPS_VPE_LOADER && MIPS_CMP 2461 2462config MIPS_VPE_LOADER_MT 2463 bool 2464 default "y" 2465 depends on MIPS_VPE_LOADER && !MIPS_CMP 2466 2467config MIPS_VPE_LOADER_TOM 2468 bool "Load VPE program into memory hidden from linux" 2469 depends on MIPS_VPE_LOADER 2470 default y 2471 help 2472 The loader can use memory that is present but has been hidden from 2473 Linux using the kernel command line option "mem=xxMB". It's up to 2474 you to ensure the amount you put in the option and the space your 2475 program requires is less or equal to the amount physically present. 2476 2477config MIPS_VPE_APSP_API 2478 bool "Enable support for AP/SP API (RTLX)" 2479 depends on MIPS_VPE_LOADER 2480 2481config MIPS_VPE_APSP_API_CMP 2482 bool 2483 default "y" 2484 depends on MIPS_VPE_APSP_API && MIPS_CMP 2485 2486config MIPS_VPE_APSP_API_MT 2487 bool 2488 default "y" 2489 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2490 2491config MIPS_CMP 2492 bool "MIPS CMP framework support (DEPRECATED)" 2493 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2494 select SMP 2495 select SYNC_R4K 2496 select SYS_SUPPORTS_SMP 2497 select WEAK_ORDERING 2498 default n 2499 help 2500 Select this if you are using a bootloader which implements the "CMP 2501 framework" protocol (ie. YAMON) and want your kernel to make use of 2502 its ability to start secondary CPUs. 2503 2504 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2505 instead of this. 2506 2507config MIPS_CPS 2508 bool "MIPS Coherent Processing System support" 2509 depends on SYS_SUPPORTS_MIPS_CPS 2510 select MIPS_CM 2511 select MIPS_CPS_PM if HOTPLUG_CPU 2512 select SMP 2513 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2514 select SYS_SUPPORTS_HOTPLUG_CPU 2515 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2516 select SYS_SUPPORTS_SMP 2517 select WEAK_ORDERING 2518 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU 2519 help 2520 Select this if you wish to run an SMP kernel across multiple cores 2521 within a MIPS Coherent Processing System. When this option is 2522 enabled the kernel will probe for other cores and boot them with 2523 no external assistance. It is safe to enable this when hardware 2524 support is unavailable. 2525 2526config MIPS_CPS_PM 2527 depends on MIPS_CPS 2528 bool 2529 2530config MIPS_CM 2531 bool 2532 select MIPS_CPC 2533 2534config MIPS_CPC 2535 bool 2536 2537config SB1_PASS_2_WORKAROUNDS 2538 bool 2539 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2540 default y 2541 2542config SB1_PASS_2_1_WORKAROUNDS 2543 bool 2544 depends on CPU_SB1 && CPU_SB1_PASS_2 2545 default y 2546 2547choice 2548 prompt "SmartMIPS or microMIPS ASE support" 2549 2550config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2551 bool "None" 2552 help 2553 Select this if you want neither microMIPS nor SmartMIPS support 2554 2555config CPU_HAS_SMARTMIPS 2556 depends on SYS_SUPPORTS_SMARTMIPS 2557 bool "SmartMIPS" 2558 help 2559 SmartMIPS is a extension of the MIPS32 architecture aimed at 2560 increased security at both hardware and software level for 2561 smartcards. Enabling this option will allow proper use of the 2562 SmartMIPS instructions by Linux applications. However a kernel with 2563 this option will not work on a MIPS core without SmartMIPS core. If 2564 you don't know you probably don't have SmartMIPS and should say N 2565 here. 2566 2567config CPU_MICROMIPS 2568 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2569 bool "microMIPS" 2570 help 2571 When this option is enabled the kernel will be built using the 2572 microMIPS ISA 2573 2574endchoice 2575 2576config CPU_HAS_MSA 2577 bool "Support for the MIPS SIMD Architecture" 2578 depends on CPU_SUPPORTS_MSA 2579 depends on MIPS_FP_SUPPORT 2580 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2581 help 2582 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2583 and a set of SIMD instructions to operate on them. When this option 2584 is enabled the kernel will support allocating & switching MSA 2585 vector register contexts. If you know that your kernel will only be 2586 running on CPUs which do not support MSA or that your userland will 2587 not be making use of it then you may wish to say N here to reduce 2588 the size & complexity of your kernel. 2589 2590 If unsure, say Y. 2591 2592config CPU_HAS_WB 2593 bool 2594 2595config XKS01 2596 bool 2597 2598config CPU_HAS_DIEI 2599 depends on !CPU_DIEI_BROKEN 2600 bool 2601 2602config CPU_DIEI_BROKEN 2603 bool 2604 2605config CPU_HAS_RIXI 2606 bool 2607 2608config CPU_NO_LOAD_STORE_LR 2609 bool 2610 help 2611 CPU lacks support for unaligned load and store instructions: 2612 LWL, LWR, SWL, SWR (Load/store word left/right). 2613 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2614 systems). 2615 2616# 2617# Vectored interrupt mode is an R2 feature 2618# 2619config CPU_MIPSR2_IRQ_VI 2620 bool 2621 2622# 2623# Extended interrupt mode is an R2 feature 2624# 2625config CPU_MIPSR2_IRQ_EI 2626 bool 2627 2628config CPU_HAS_SYNC 2629 bool 2630 depends on !CPU_R3000 2631 default y 2632 2633# 2634# CPU non-features 2635# 2636config CPU_DADDI_WORKAROUNDS 2637 bool 2638 2639config CPU_R4000_WORKAROUNDS 2640 bool 2641 select CPU_R4400_WORKAROUNDS 2642 2643config CPU_R4400_WORKAROUNDS 2644 bool 2645 2646config CPU_R4X00_BUGS64 2647 bool 2648 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2649 2650config MIPS_ASID_SHIFT 2651 int 2652 default 6 if CPU_R3000 || CPU_TX39XX 2653 default 0 2654 2655config MIPS_ASID_BITS 2656 int 2657 default 0 if MIPS_ASID_BITS_VARIABLE 2658 default 6 if CPU_R3000 || CPU_TX39XX 2659 default 8 2660 2661config MIPS_ASID_BITS_VARIABLE 2662 bool 2663 2664config MIPS_CRC_SUPPORT 2665 bool 2666 2667# R4600 erratum. Due to the lack of errata information the exact 2668# technical details aren't known. I've experimentally found that disabling 2669# interrupts during indexed I-cache flushes seems to be sufficient to deal 2670# with the issue. 2671config WAR_R4600_V1_INDEX_ICACHEOP 2672 bool 2673 2674# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2675# 2676# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2677# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2678# executed if there is no other dcache activity. If the dcache is 2679# accessed for another instruction immediately preceding when these 2680# cache instructions are executing, it is possible that the dcache 2681# tag match outputs used by these cache instructions will be 2682# incorrect. These cache instructions should be preceded by at least 2683# four instructions that are not any kind of load or store 2684# instruction. 2685# 2686# This is not allowed: lw 2687# nop 2688# nop 2689# nop 2690# cache Hit_Writeback_Invalidate_D 2691# 2692# This is allowed: lw 2693# nop 2694# nop 2695# nop 2696# nop 2697# cache Hit_Writeback_Invalidate_D 2698config WAR_R4600_V1_HIT_CACHEOP 2699 bool 2700 2701# Writeback and invalidate the primary cache dcache before DMA. 2702# 2703# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2704# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2705# operate correctly if the internal data cache refill buffer is empty. These 2706# CACHE instructions should be separated from any potential data cache miss 2707# by a load instruction to an uncached address to empty the response buffer." 2708# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2709# in .pdf format.) 2710config WAR_R4600_V2_HIT_CACHEOP 2711 bool 2712 2713# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2714# the line which this instruction itself exists, the following 2715# operation is not guaranteed." 2716# 2717# Workaround: do two phase flushing for Index_Invalidate_I 2718config WAR_TX49XX_ICACHE_INDEX_INV 2719 bool 2720 2721# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2722# opposes it being called that) where invalid instructions in the same 2723# I-cache line worth of instructions being fetched may case spurious 2724# exceptions. 2725config WAR_ICACHE_REFILLS 2726 bool 2727 2728# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2729# may cause ll / sc and lld / scd sequences to execute non-atomically. 2730config WAR_R10000_LLSC 2731 bool 2732 2733# 34K core erratum: "Problems Executing the TLBR Instruction" 2734config WAR_MIPS34K_MISSED_ITLB 2735 bool 2736 2737# 2738# - Highmem only makes sense for the 32-bit kernel. 2739# - The current highmem code will only work properly on physically indexed 2740# caches such as R3000, SB1, R7000 or those that look like they're virtually 2741# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2742# moment we protect the user and offer the highmem option only on machines 2743# where it's known to be safe. This will not offer highmem on a few systems 2744# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2745# indexed CPUs but we're playing safe. 2746# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2747# know they might have memory configurations that could make use of highmem 2748# support. 2749# 2750config HIGHMEM 2751 bool "High Memory Support" 2752 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2753 select KMAP_LOCAL 2754 2755config CPU_SUPPORTS_HIGHMEM 2756 bool 2757 2758config SYS_SUPPORTS_HIGHMEM 2759 bool 2760 2761config SYS_SUPPORTS_SMARTMIPS 2762 bool 2763 2764config SYS_SUPPORTS_MICROMIPS 2765 bool 2766 2767config SYS_SUPPORTS_MIPS16 2768 bool 2769 help 2770 This option must be set if a kernel might be executed on a MIPS16- 2771 enabled CPU even if MIPS16 is not actually being used. In other 2772 words, it makes the kernel MIPS16-tolerant. 2773 2774config CPU_SUPPORTS_MSA 2775 bool 2776 2777config ARCH_FLATMEM_ENABLE 2778 def_bool y 2779 depends on !NUMA && !CPU_LOONGSON2EF 2780 2781config ARCH_SPARSEMEM_ENABLE 2782 bool 2783 select SPARSEMEM_STATIC if !SGI_IP27 2784 2785config NUMA 2786 bool "NUMA Support" 2787 depends on SYS_SUPPORTS_NUMA 2788 select SMP 2789 help 2790 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2791 Access). This option improves performance on systems with more 2792 than two nodes; on two node systems it is generally better to 2793 leave it disabled; on single node systems leave this option 2794 disabled. 2795 2796config SYS_SUPPORTS_NUMA 2797 bool 2798 2799config HAVE_SETUP_PER_CPU_AREA 2800 def_bool y 2801 depends on NUMA 2802 2803config NEED_PER_CPU_EMBED_FIRST_CHUNK 2804 def_bool y 2805 depends on NUMA 2806 2807config RELOCATABLE 2808 bool "Relocatable kernel" 2809 depends on SYS_SUPPORTS_RELOCATABLE 2810 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2811 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2812 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2813 CPU_P5600 || CAVIUM_OCTEON_SOC || \ 2814 CPU_LOONGSON64 2815 help 2816 This builds a kernel image that retains relocation information 2817 so it can be loaded someplace besides the default 1MB. 2818 The relocations make the kernel binary about 15% larger, 2819 but are discarded at runtime 2820 2821config RELOCATION_TABLE_SIZE 2822 hex "Relocation table size" 2823 depends on RELOCATABLE 2824 range 0x0 0x01000000 2825 default "0x00200000" if CPU_LOONGSON64 2826 default "0x00100000" 2827 help 2828 A table of relocation data will be appended to the kernel binary 2829 and parsed at boot to fix up the relocated kernel. 2830 2831 This option allows the amount of space reserved for the table to be 2832 adjusted, although the default of 1Mb should be ok in most cases. 2833 2834 The build will fail and a valid size suggested if this is too small. 2835 2836 If unsure, leave at the default value. 2837 2838config RANDOMIZE_BASE 2839 bool "Randomize the address of the kernel image" 2840 depends on RELOCATABLE 2841 help 2842 Randomizes the physical and virtual address at which the 2843 kernel image is loaded, as a security feature that 2844 deters exploit attempts relying on knowledge of the location 2845 of kernel internals. 2846 2847 Entropy is generated using any coprocessor 0 registers available. 2848 2849 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2850 2851 If unsure, say N. 2852 2853config RANDOMIZE_BASE_MAX_OFFSET 2854 hex "Maximum kASLR offset" if EXPERT 2855 depends on RANDOMIZE_BASE 2856 range 0x0 0x40000000 if EVA || 64BIT 2857 range 0x0 0x08000000 2858 default "0x01000000" 2859 help 2860 When kASLR is active, this provides the maximum offset that will 2861 be applied to the kernel image. It should be set according to the 2862 amount of physical RAM available in the target system minus 2863 PHYSICAL_START and must be a power of 2. 2864 2865 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2866 EVA or 64-bit. The default is 16Mb. 2867 2868config NODES_SHIFT 2869 int 2870 default "6" 2871 depends on NEED_MULTIPLE_NODES 2872 2873config HW_PERF_EVENTS 2874 bool "Enable hardware performance counter support for perf events" 2875 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64) 2876 default y 2877 help 2878 Enable hardware performance counter support for perf events. If 2879 disabled, perf events will use software events only. 2880 2881config DMI 2882 bool "Enable DMI scanning" 2883 depends on MACH_LOONGSON64 2884 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2885 default y 2886 help 2887 Enabled scanning of DMI to identify machine quirks. Say Y 2888 here unless you have verified that your setup is not 2889 affected by entries in the DMI blacklist. Required by PNP 2890 BIOS code. 2891 2892config SMP 2893 bool "Multi-Processing support" 2894 depends on SYS_SUPPORTS_SMP 2895 help 2896 This enables support for systems with more than one CPU. If you have 2897 a system with only one CPU, say N. If you have a system with more 2898 than one CPU, say Y. 2899 2900 If you say N here, the kernel will run on uni- and multiprocessor 2901 machines, but will use only one CPU of a multiprocessor machine. If 2902 you say Y here, the kernel will run on many, but not all, 2903 uniprocessor machines. On a uniprocessor machine, the kernel 2904 will run faster if you say N here. 2905 2906 People using multiprocessor machines who say Y here should also say 2907 Y to "Enhanced Real Time Clock Support", below. 2908 2909 See also the SMP-HOWTO available at 2910 <https://www.tldp.org/docs.html#howto>. 2911 2912 If you don't know what to do here, say N. 2913 2914config HOTPLUG_CPU 2915 bool "Support for hot-pluggable CPUs" 2916 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2917 help 2918 Say Y here to allow turning CPUs off and on. CPUs can be 2919 controlled through /sys/devices/system/cpu. 2920 (Note: power management support will enable this option 2921 automatically on SMP systems. ) 2922 Say N if you want to disable CPU hotplug. 2923 2924config SMP_UP 2925 bool 2926 2927config SYS_SUPPORTS_MIPS_CMP 2928 bool 2929 2930config SYS_SUPPORTS_MIPS_CPS 2931 bool 2932 2933config SYS_SUPPORTS_SMP 2934 bool 2935 2936config NR_CPUS_DEFAULT_4 2937 bool 2938 2939config NR_CPUS_DEFAULT_8 2940 bool 2941 2942config NR_CPUS_DEFAULT_16 2943 bool 2944 2945config NR_CPUS_DEFAULT_32 2946 bool 2947 2948config NR_CPUS_DEFAULT_64 2949 bool 2950 2951config NR_CPUS 2952 int "Maximum number of CPUs (2-256)" 2953 range 2 256 2954 depends on SMP 2955 default "4" if NR_CPUS_DEFAULT_4 2956 default "8" if NR_CPUS_DEFAULT_8 2957 default "16" if NR_CPUS_DEFAULT_16 2958 default "32" if NR_CPUS_DEFAULT_32 2959 default "64" if NR_CPUS_DEFAULT_64 2960 help 2961 This allows you to specify the maximum number of CPUs which this 2962 kernel will support. The maximum supported value is 32 for 32-bit 2963 kernel and 64 for 64-bit kernels; the minimum value which makes 2964 sense is 1 for Qemu (useful only for kernel debugging purposes) 2965 and 2 for all others. 2966 2967 This is purely to save memory - each supported CPU adds 2968 approximately eight kilobytes to the kernel image. For best 2969 performance should round up your number of processors to the next 2970 power of two. 2971 2972config MIPS_PERF_SHARED_TC_COUNTERS 2973 bool 2974 2975config MIPS_NR_CPU_NR_MAP_1024 2976 bool 2977 2978config MIPS_NR_CPU_NR_MAP 2979 int 2980 depends on SMP 2981 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2982 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2983 2984# 2985# Timer Interrupt Frequency Configuration 2986# 2987 2988choice 2989 prompt "Timer frequency" 2990 default HZ_250 2991 help 2992 Allows the configuration of the timer frequency. 2993 2994 config HZ_24 2995 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2996 2997 config HZ_48 2998 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 2999 3000 config HZ_100 3001 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 3002 3003 config HZ_128 3004 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 3005 3006 config HZ_250 3007 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 3008 3009 config HZ_256 3010 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 3011 3012 config HZ_1000 3013 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 3014 3015 config HZ_1024 3016 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 3017 3018endchoice 3019 3020config SYS_SUPPORTS_24HZ 3021 bool 3022 3023config SYS_SUPPORTS_48HZ 3024 bool 3025 3026config SYS_SUPPORTS_100HZ 3027 bool 3028 3029config SYS_SUPPORTS_128HZ 3030 bool 3031 3032config SYS_SUPPORTS_250HZ 3033 bool 3034 3035config SYS_SUPPORTS_256HZ 3036 bool 3037 3038config SYS_SUPPORTS_1000HZ 3039 bool 3040 3041config SYS_SUPPORTS_1024HZ 3042 bool 3043 3044config SYS_SUPPORTS_ARBIT_HZ 3045 bool 3046 default y if !SYS_SUPPORTS_24HZ && \ 3047 !SYS_SUPPORTS_48HZ && \ 3048 !SYS_SUPPORTS_100HZ && \ 3049 !SYS_SUPPORTS_128HZ && \ 3050 !SYS_SUPPORTS_250HZ && \ 3051 !SYS_SUPPORTS_256HZ && \ 3052 !SYS_SUPPORTS_1000HZ && \ 3053 !SYS_SUPPORTS_1024HZ 3054 3055config HZ 3056 int 3057 default 24 if HZ_24 3058 default 48 if HZ_48 3059 default 100 if HZ_100 3060 default 128 if HZ_128 3061 default 250 if HZ_250 3062 default 256 if HZ_256 3063 default 1000 if HZ_1000 3064 default 1024 if HZ_1024 3065 3066config SCHED_HRTICK 3067 def_bool HIGH_RES_TIMERS 3068 3069config KEXEC 3070 bool "Kexec system call" 3071 select KEXEC_CORE 3072 help 3073 kexec is a system call that implements the ability to shutdown your 3074 current kernel, and to start another kernel. It is like a reboot 3075 but it is independent of the system firmware. And like a reboot 3076 you can start any kernel with it, not just Linux. 3077 3078 The name comes from the similarity to the exec system call. 3079 3080 It is an ongoing process to be certain the hardware in a machine 3081 is properly shutdown, so do not be surprised if this code does not 3082 initially work for you. As of this writing the exact hardware 3083 interface is strongly in flux, so no good recommendation can be 3084 made. 3085 3086config CRASH_DUMP 3087 bool "Kernel crash dumps" 3088 help 3089 Generate crash dump after being started by kexec. 3090 This should be normally only set in special crash dump kernels 3091 which are loaded in the main kernel with kexec-tools into 3092 a specially reserved region and then later executed after 3093 a crash by kdump/kexec. The crash dump kernel must be compiled 3094 to a memory address not used by the main kernel or firmware using 3095 PHYSICAL_START. 3096 3097config PHYSICAL_START 3098 hex "Physical address where the kernel is loaded" 3099 default "0xffffffff84000000" 3100 depends on CRASH_DUMP 3101 help 3102 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 3103 If you plan to use kernel for capturing the crash dump change 3104 this value to start of the reserved region (the "X" value as 3105 specified in the "crashkernel=YM@XM" command line boot parameter 3106 passed to the panic-ed kernel). 3107 3108config MIPS_O32_FP64_SUPPORT 3109 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 3110 depends on 32BIT || MIPS32_O32 3111 help 3112 When this is enabled, the kernel will support use of 64-bit floating 3113 point registers with binaries using the O32 ABI along with the 3114 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 3115 32-bit MIPS systems this support is at the cost of increasing the 3116 size and complexity of the compiled FPU emulator. Thus if you are 3117 running a MIPS32 system and know that none of your userland binaries 3118 will require 64-bit floating point, you may wish to reduce the size 3119 of your kernel & potentially improve FP emulation performance by 3120 saying N here. 3121 3122 Although binutils currently supports use of this flag the details 3123 concerning its effect upon the O32 ABI in userland are still being 3124 worked on. In order to avoid userland becoming dependent upon current 3125 behaviour before the details have been finalised, this option should 3126 be considered experimental and only enabled by those working upon 3127 said details. 3128 3129 If unsure, say N. 3130 3131config USE_OF 3132 bool 3133 select OF 3134 select OF_EARLY_FLATTREE 3135 select IRQ_DOMAIN 3136 3137config UHI_BOOT 3138 bool 3139 3140config BUILTIN_DTB 3141 bool 3142 3143choice 3144 prompt "Kernel appended dtb support" if USE_OF 3145 default MIPS_NO_APPENDED_DTB 3146 3147 config MIPS_NO_APPENDED_DTB 3148 bool "None" 3149 help 3150 Do not enable appended dtb support. 3151 3152 config MIPS_ELF_APPENDED_DTB 3153 bool "vmlinux" 3154 help 3155 With this option, the boot code will look for a device tree binary 3156 DTB) included in the vmlinux ELF section .appended_dtb. By default 3157 it is empty and the DTB can be appended using binutils command 3158 objcopy: 3159 3160 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3161 3162 This is meant as a backward compatibility convenience for those 3163 systems with a bootloader that can't be upgraded to accommodate 3164 the documented boot protocol using a device tree. 3165 3166 config MIPS_RAW_APPENDED_DTB 3167 bool "vmlinux.bin or vmlinuz.bin" 3168 help 3169 With this option, the boot code will look for a device tree binary 3170 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3171 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3172 3173 This is meant as a backward compatibility convenience for those 3174 systems with a bootloader that can't be upgraded to accommodate 3175 the documented boot protocol using a device tree. 3176 3177 Beware that there is very little in terms of protection against 3178 this option being confused by leftover garbage in memory that might 3179 look like a DTB header after a reboot if no actual DTB is appended 3180 to vmlinux.bin. Do not leave this option active in a production kernel 3181 if you don't intend to always append a DTB. 3182endchoice 3183 3184choice 3185 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3186 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3187 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3188 !CAVIUM_OCTEON_SOC 3189 default MIPS_CMDLINE_FROM_BOOTLOADER 3190 3191 config MIPS_CMDLINE_FROM_DTB 3192 depends on USE_OF 3193 bool "Dtb kernel arguments if available" 3194 3195 config MIPS_CMDLINE_DTB_EXTEND 3196 depends on USE_OF 3197 bool "Extend dtb kernel arguments with bootloader arguments" 3198 3199 config MIPS_CMDLINE_FROM_BOOTLOADER 3200 bool "Bootloader kernel arguments if available" 3201 3202 config MIPS_CMDLINE_BUILTIN_EXTEND 3203 depends on CMDLINE_BOOL 3204 bool "Extend builtin kernel arguments with bootloader arguments" 3205endchoice 3206 3207endmenu 3208 3209config LOCKDEP_SUPPORT 3210 bool 3211 default y 3212 3213config STACKTRACE_SUPPORT 3214 bool 3215 default y 3216 3217config PGTABLE_LEVELS 3218 int 3219 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3220 default 3 if 64BIT && !PAGE_SIZE_64KB 3221 default 2 3222 3223config MIPS_AUTO_PFN_OFFSET 3224 bool 3225 3226menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3227 3228config PCI_DRIVERS_GENERIC 3229 select PCI_DOMAINS_GENERIC if PCI 3230 bool 3231 3232config PCI_DRIVERS_LEGACY 3233 def_bool !PCI_DRIVERS_GENERIC 3234 select NO_GENERIC_PCI_IOPORT_MAP 3235 select PCI_DOMAINS if PCI 3236 3237# 3238# ISA support is now enabled via select. Too many systems still have the one 3239# or other ISA chip on the board that users don't know about so don't expect 3240# users to choose the right thing ... 3241# 3242config ISA 3243 bool 3244 3245config TC 3246 bool "TURBOchannel support" 3247 depends on MACH_DECSTATION 3248 help 3249 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3250 processors. TURBOchannel programming specifications are available 3251 at: 3252 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3253 and: 3254 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3255 Linux driver support status is documented at: 3256 <http://www.linux-mips.org/wiki/DECstation> 3257 3258config MMU 3259 bool 3260 default y 3261 3262config ARCH_MMAP_RND_BITS_MIN 3263 default 12 if 64BIT 3264 default 8 3265 3266config ARCH_MMAP_RND_BITS_MAX 3267 default 18 if 64BIT 3268 default 15 3269 3270config ARCH_MMAP_RND_COMPAT_BITS_MIN 3271 default 8 3272 3273config ARCH_MMAP_RND_COMPAT_BITS_MAX 3274 default 15 3275 3276config I8253 3277 bool 3278 select CLKSRC_I8253 3279 select CLKEVT_I8253 3280 select MIPS_EXTERNAL_TIMER 3281 3282config ZONE_DMA 3283 bool 3284 3285config ZONE_DMA32 3286 bool 3287 3288endmenu 3289 3290config TRAD_SIGNALS 3291 bool 3292 3293config MIPS32_COMPAT 3294 bool 3295 3296config COMPAT 3297 bool 3298 3299config SYSVIPC_COMPAT 3300 bool 3301 3302config MIPS32_O32 3303 bool "Kernel support for o32 binaries" 3304 depends on 64BIT 3305 select ARCH_WANT_OLD_COMPAT_IPC 3306 select COMPAT 3307 select MIPS32_COMPAT 3308 select SYSVIPC_COMPAT if SYSVIPC 3309 help 3310 Select this option if you want to run o32 binaries. These are pure 3311 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3312 existing binaries are in this format. 3313 3314 If unsure, say Y. 3315 3316config MIPS32_N32 3317 bool "Kernel support for n32 binaries" 3318 depends on 64BIT 3319 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3320 select COMPAT 3321 select MIPS32_COMPAT 3322 select SYSVIPC_COMPAT if SYSVIPC 3323 help 3324 Select this option if you want to run n32 binaries. These are 3325 64-bit binaries using 32-bit quantities for addressing and certain 3326 data that would normally be 64-bit. They are used in special 3327 cases. 3328 3329 If unsure, say N. 3330 3331menu "Power management options" 3332 3333config ARCH_HIBERNATION_POSSIBLE 3334 def_bool y 3335 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3336 3337config ARCH_SUSPEND_POSSIBLE 3338 def_bool y 3339 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3340 3341source "kernel/power/Kconfig" 3342 3343endmenu 3344 3345config MIPS_EXTERNAL_TIMER 3346 bool 3347 3348menu "CPU Power Management" 3349 3350if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3351source "drivers/cpufreq/Kconfig" 3352endif 3353 3354source "drivers/cpuidle/Kconfig" 3355 3356endmenu 3357 3358source "drivers/firmware/Kconfig" 3359 3360source "arch/mips/kvm/Kconfig" 3361 3362source "arch/mips/vdso/Kconfig" 3363