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_FORTIFY_SOURCE 8 select ARCH_HAS_KCOV 9 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI) 10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST 11 select ARCH_HAS_UBSAN_SANITIZE_ALL 12 select ARCH_SUPPORTS_UPROBES 13 select ARCH_USE_BUILTIN_BSWAP 14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT 15 select ARCH_USE_QUEUED_RWLOCKS 16 select ARCH_USE_QUEUED_SPINLOCKS 17 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU 18 select ARCH_WANT_IPC_PARSE_VERSION 19 select BUILDTIME_TABLE_SORT 20 select CLONE_BACKWARDS 21 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1) 22 select CPU_PM if CPU_IDLE 23 select GENERIC_ATOMIC64 if !64BIT 24 select GENERIC_CLOCKEVENTS 25 select GENERIC_CMOS_UPDATE 26 select GENERIC_CPU_AUTOPROBE 27 select GENERIC_GETTIMEOFDAY 28 select GENERIC_IOMAP 29 select GENERIC_IRQ_PROBE 30 select GENERIC_IRQ_SHOW 31 select GENERIC_ISA_DMA if EISA 32 select GENERIC_LIB_ASHLDI3 33 select GENERIC_LIB_ASHRDI3 34 select GENERIC_LIB_CMPDI2 35 select GENERIC_LIB_LSHRDI3 36 select GENERIC_LIB_UCMPDI2 37 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC 38 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_TIME_VSYSCALL 40 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT 41 select HANDLE_DOMAIN_IRQ 42 select HAVE_ARCH_COMPILER_H 43 select HAVE_ARCH_JUMP_LABEL 44 select HAVE_ARCH_KGDB 45 select HAVE_ARCH_MMAP_RND_BITS if MMU 46 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT 47 select HAVE_ARCH_SECCOMP_FILTER 48 select HAVE_ARCH_TRACEHOOK 49 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES 50 select HAVE_ASM_MODVERSIONS 51 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS 52 select HAVE_CONTEXT_TRACKING 53 select HAVE_TIF_NOHZ 54 select HAVE_C_RECORDMCOUNT 55 select HAVE_DEBUG_KMEMLEAK 56 select HAVE_DEBUG_STACKOVERFLOW 57 select HAVE_DMA_CONTIGUOUS 58 select HAVE_DYNAMIC_FTRACE 59 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2 60 select HAVE_EXIT_THREAD 61 select HAVE_FAST_GUP 62 select HAVE_FTRACE_MCOUNT_RECORD 63 select HAVE_FUNCTION_GRAPH_TRACER 64 select HAVE_FUNCTION_TRACER 65 select HAVE_GCC_PLUGINS 66 select HAVE_GENERIC_VDSO 67 select HAVE_IDE 68 select HAVE_IOREMAP_PROT 69 select HAVE_IRQ_EXIT_ON_IRQ_STACK 70 select HAVE_IRQ_TIME_ACCOUNTING 71 select HAVE_KPROBES 72 select HAVE_KRETPROBES 73 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION 74 select HAVE_MOD_ARCH_SPECIFIC 75 select HAVE_NMI 76 select HAVE_OPROFILE 77 select HAVE_PERF_EVENTS 78 select HAVE_REGS_AND_STACK_ACCESS_API 79 select HAVE_RSEQ 80 select HAVE_SPARSE_SYSCALL_NR 81 select HAVE_STACKPROTECTOR 82 select HAVE_SYSCALL_TRACEPOINTS 83 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP 84 select IRQ_FORCED_THREADING 85 select ISA if EISA 86 select MODULES_USE_ELF_REL if MODULES 87 select MODULES_USE_ELF_RELA if MODULES && 64BIT 88 select PERF_USE_VMALLOC 89 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 90 select RTC_LIB 91 select SYSCTL_EXCEPTION_TRACE 92 select VIRT_TO_BUS 93 94config MIPS_FIXUP_BIGPHYS_ADDR 95 bool 96 97config MIPS_GENERIC 98 bool 99 100config MACH_INGENIC 101 bool 102 select SYS_SUPPORTS_32BIT_KERNEL 103 select SYS_SUPPORTS_LITTLE_ENDIAN 104 select SYS_SUPPORTS_ZBOOT 105 select DMA_NONCOHERENT 106 select IRQ_MIPS_CPU 107 select PINCTRL 108 select GPIOLIB 109 select COMMON_CLK 110 select GENERIC_IRQ_CHIP 111 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB 112 select USE_OF 113 select CPU_SUPPORTS_CPUFREQ 114 select MIPS_EXTERNAL_TIMER 115 116menu "Machine selection" 117 118choice 119 prompt "System type" 120 default MIPS_GENERIC_KERNEL 121 122config MIPS_GENERIC_KERNEL 123 bool "Generic board-agnostic MIPS kernel" 124 select MIPS_GENERIC 125 select BOOT_RAW 126 select BUILTIN_DTB 127 select CEVT_R4K 128 select CLKSRC_MIPS_GIC 129 select COMMON_CLK 130 select CPU_MIPSR2_IRQ_EI 131 select CPU_MIPSR2_IRQ_VI 132 select CSRC_R4K 133 select DMA_PERDEV_COHERENT 134 select HAVE_PCI 135 select IRQ_MIPS_CPU 136 select MIPS_AUTO_PFN_OFFSET 137 select MIPS_CPU_SCACHE 138 select MIPS_GIC 139 select MIPS_L1_CACHE_SHIFT_7 140 select NO_EXCEPT_FILL 141 select PCI_DRIVERS_GENERIC 142 select SMP_UP if SMP 143 select SWAP_IO_SPACE 144 select SYS_HAS_CPU_MIPS32_R1 145 select SYS_HAS_CPU_MIPS32_R2 146 select SYS_HAS_CPU_MIPS32_R6 147 select SYS_HAS_CPU_MIPS64_R1 148 select SYS_HAS_CPU_MIPS64_R2 149 select SYS_HAS_CPU_MIPS64_R6 150 select SYS_SUPPORTS_32BIT_KERNEL 151 select SYS_SUPPORTS_64BIT_KERNEL 152 select SYS_SUPPORTS_BIG_ENDIAN 153 select SYS_SUPPORTS_HIGHMEM 154 select SYS_SUPPORTS_LITTLE_ENDIAN 155 select SYS_SUPPORTS_MICROMIPS 156 select SYS_SUPPORTS_MIPS16 157 select SYS_SUPPORTS_MIPS_CPS 158 select SYS_SUPPORTS_MULTITHREADING 159 select SYS_SUPPORTS_RELOCATABLE 160 select SYS_SUPPORTS_SMARTMIPS 161 select SYS_SUPPORTS_ZBOOT 162 select UHI_BOOT 163 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 164 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 165 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 166 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 167 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 168 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 169 select USE_OF 170 help 171 Select this to build a kernel which aims to support multiple boards, 172 generally using a flattened device tree passed from the bootloader 173 using the boot protocol defined in the UHI (Unified Hosting 174 Interface) specification. 175 176config MIPS_ALCHEMY 177 bool "Alchemy processor based machines" 178 select PHYS_ADDR_T_64BIT 179 select CEVT_R4K 180 select CSRC_R4K 181 select IRQ_MIPS_CPU 182 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is 183 select MIPS_FIXUP_BIGPHYS_ADDR if PCI 184 select SYS_HAS_CPU_MIPS32_R1 185 select SYS_SUPPORTS_32BIT_KERNEL 186 select SYS_SUPPORTS_APM_EMULATION 187 select GPIOLIB 188 select SYS_SUPPORTS_ZBOOT 189 select COMMON_CLK 190 191config AR7 192 bool "Texas Instruments AR7" 193 select BOOT_ELF32 194 select DMA_NONCOHERENT 195 select CEVT_R4K 196 select CSRC_R4K 197 select IRQ_MIPS_CPU 198 select NO_EXCEPT_FILL 199 select SWAP_IO_SPACE 200 select SYS_HAS_CPU_MIPS32_R1 201 select SYS_HAS_EARLY_PRINTK 202 select SYS_SUPPORTS_32BIT_KERNEL 203 select SYS_SUPPORTS_LITTLE_ENDIAN 204 select SYS_SUPPORTS_MIPS16 205 select SYS_SUPPORTS_ZBOOT_UART16550 206 select GPIOLIB 207 select VLYNQ 208 select HAVE_LEGACY_CLK 209 help 210 Support for the Texas Instruments AR7 System-on-a-Chip 211 family: TNETD7100, 7200 and 7300. 212 213config ATH25 214 bool "Atheros AR231x/AR531x SoC support" 215 select CEVT_R4K 216 select CSRC_R4K 217 select DMA_NONCOHERENT 218 select IRQ_MIPS_CPU 219 select IRQ_DOMAIN 220 select SYS_HAS_CPU_MIPS32_R1 221 select SYS_SUPPORTS_BIG_ENDIAN 222 select SYS_SUPPORTS_32BIT_KERNEL 223 select SYS_HAS_EARLY_PRINTK 224 help 225 Support for Atheros AR231x and Atheros AR531x based boards 226 227config ATH79 228 bool "Atheros AR71XX/AR724X/AR913X based boards" 229 select ARCH_HAS_RESET_CONTROLLER 230 select BOOT_RAW 231 select CEVT_R4K 232 select CSRC_R4K 233 select DMA_NONCOHERENT 234 select GPIOLIB 235 select PINCTRL 236 select COMMON_CLK 237 select IRQ_MIPS_CPU 238 select SYS_HAS_CPU_MIPS32_R2 239 select SYS_HAS_EARLY_PRINTK 240 select SYS_SUPPORTS_32BIT_KERNEL 241 select SYS_SUPPORTS_BIG_ENDIAN 242 select SYS_SUPPORTS_MIPS16 243 select SYS_SUPPORTS_ZBOOT_UART_PROM 244 select USE_OF 245 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM 246 help 247 Support for the Atheros AR71XX/AR724X/AR913X SoCs. 248 249config BMIPS_GENERIC 250 bool "Broadcom Generic BMIPS kernel" 251 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL 252 select ARCH_HAS_PHYS_TO_DMA 253 select BOOT_RAW 254 select NO_EXCEPT_FILL 255 select USE_OF 256 select CEVT_R4K 257 select CSRC_R4K 258 select SYNC_R4K 259 select COMMON_CLK 260 select BCM6345_L1_IRQ 261 select BCM7038_L1_IRQ 262 select BCM7120_L2_IRQ 263 select BRCMSTB_L2_IRQ 264 select IRQ_MIPS_CPU 265 select DMA_NONCOHERENT 266 select SYS_SUPPORTS_32BIT_KERNEL 267 select SYS_SUPPORTS_LITTLE_ENDIAN 268 select SYS_SUPPORTS_BIG_ENDIAN 269 select SYS_SUPPORTS_HIGHMEM 270 select SYS_HAS_CPU_BMIPS32_3300 271 select SYS_HAS_CPU_BMIPS4350 272 select SYS_HAS_CPU_BMIPS4380 273 select SYS_HAS_CPU_BMIPS5000 274 select SWAP_IO_SPACE 275 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 276 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 277 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN 278 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 279 select HARDIRQS_SW_RESEND 280 help 281 Build a generic DT-based kernel image that boots on select 282 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top 283 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN 284 must be set appropriately for your board. 285 286config BCM47XX 287 bool "Broadcom BCM47XX based boards" 288 select BOOT_RAW 289 select CEVT_R4K 290 select CSRC_R4K 291 select DMA_NONCOHERENT 292 select HAVE_PCI 293 select IRQ_MIPS_CPU 294 select SYS_HAS_CPU_MIPS32_R1 295 select NO_EXCEPT_FILL 296 select SYS_SUPPORTS_32BIT_KERNEL 297 select SYS_SUPPORTS_LITTLE_ENDIAN 298 select SYS_SUPPORTS_MIPS16 299 select SYS_SUPPORTS_ZBOOT 300 select SYS_HAS_EARLY_PRINTK 301 select USE_GENERIC_EARLY_PRINTK_8250 302 select GPIOLIB 303 select LEDS_GPIO_REGISTER 304 select BCM47XX_NVRAM 305 select BCM47XX_SPROM 306 select BCM47XX_SSB if !BCM47XX_BCMA 307 help 308 Support for BCM47XX based boards 309 310config BCM63XX 311 bool "Broadcom BCM63XX based boards" 312 select BOOT_RAW 313 select CEVT_R4K 314 select CSRC_R4K 315 select SYNC_R4K 316 select DMA_NONCOHERENT 317 select IRQ_MIPS_CPU 318 select SYS_SUPPORTS_32BIT_KERNEL 319 select SYS_SUPPORTS_BIG_ENDIAN 320 select SYS_HAS_EARLY_PRINTK 321 select SWAP_IO_SPACE 322 select GPIOLIB 323 select MIPS_L1_CACHE_SHIFT_4 324 select CLKDEV_LOOKUP 325 select HAVE_LEGACY_CLK 326 help 327 Support for BCM63XX based boards 328 329config MIPS_COBALT 330 bool "Cobalt Server" 331 select CEVT_R4K 332 select CSRC_R4K 333 select CEVT_GT641XX 334 select DMA_NONCOHERENT 335 select FORCE_PCI 336 select I8253 337 select I8259 338 select IRQ_MIPS_CPU 339 select IRQ_GT641XX 340 select PCI_GT64XXX_PCI0 341 select SYS_HAS_CPU_NEVADA 342 select SYS_HAS_EARLY_PRINTK 343 select SYS_SUPPORTS_32BIT_KERNEL 344 select SYS_SUPPORTS_64BIT_KERNEL 345 select SYS_SUPPORTS_LITTLE_ENDIAN 346 select USE_GENERIC_EARLY_PRINTK_8250 347 348config MACH_DECSTATION 349 bool "DECstations" 350 select BOOT_ELF32 351 select CEVT_DS1287 352 select CEVT_R4K if CPU_R4X00 353 select CSRC_IOASIC 354 select CSRC_R4K if CPU_R4X00 355 select CPU_DADDI_WORKAROUNDS if 64BIT 356 select CPU_R4000_WORKAROUNDS if 64BIT 357 select CPU_R4400_WORKAROUNDS if 64BIT 358 select DMA_NONCOHERENT 359 select NO_IOPORT_MAP 360 select IRQ_MIPS_CPU 361 select SYS_HAS_CPU_R3000 362 select SYS_HAS_CPU_R4X00 363 select SYS_SUPPORTS_32BIT_KERNEL 364 select SYS_SUPPORTS_64BIT_KERNEL 365 select SYS_SUPPORTS_LITTLE_ENDIAN 366 select SYS_SUPPORTS_128HZ 367 select SYS_SUPPORTS_256HZ 368 select SYS_SUPPORTS_1024HZ 369 select MIPS_L1_CACHE_SHIFT_4 370 help 371 This enables support for DEC's MIPS based workstations. For details 372 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the 373 DECstation porting pages on <http://decstation.unix-ag.org/>. 374 375 If you have one of the following DECstation Models you definitely 376 want to choose R4xx0 for the CPU Type: 377 378 DECstation 5000/50 379 DECstation 5000/150 380 DECstation 5000/260 381 DECsystem 5900/260 382 383 otherwise choose R3000. 384 385config MACH_JAZZ 386 bool "Jazz family of machines" 387 select ARC_MEMORY 388 select ARC_PROMLIB 389 select ARCH_MIGHT_HAVE_PC_PARPORT 390 select ARCH_MIGHT_HAVE_PC_SERIO 391 select DMA_OPS 392 select FW_ARC 393 select FW_ARC32 394 select ARCH_MAY_HAVE_PC_FDC 395 select CEVT_R4K 396 select CSRC_R4K 397 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 398 select GENERIC_ISA_DMA 399 select HAVE_PCSPKR_PLATFORM 400 select IRQ_MIPS_CPU 401 select I8253 402 select I8259 403 select ISA 404 select SYS_HAS_CPU_R4X00 405 select SYS_SUPPORTS_32BIT_KERNEL 406 select SYS_SUPPORTS_64BIT_KERNEL 407 select SYS_SUPPORTS_100HZ 408 help 409 This a family of machines based on the MIPS R4030 chipset which was 410 used by several vendors to build RISC/os and Windows NT workstations. 411 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and 412 Olivetti M700-10 workstations. 413 414config MACH_INGENIC_SOC 415 bool "Ingenic SoC based machines" 416 select MIPS_GENERIC 417 select MACH_INGENIC 418 select SYS_SUPPORTS_ZBOOT_UART16550 419 420config LANTIQ 421 bool "Lantiq based platforms" 422 select DMA_NONCOHERENT 423 select IRQ_MIPS_CPU 424 select CEVT_R4K 425 select CSRC_R4K 426 select SYS_HAS_CPU_MIPS32_R1 427 select SYS_HAS_CPU_MIPS32_R2 428 select SYS_SUPPORTS_BIG_ENDIAN 429 select SYS_SUPPORTS_32BIT_KERNEL 430 select SYS_SUPPORTS_MIPS16 431 select SYS_SUPPORTS_MULTITHREADING 432 select SYS_SUPPORTS_VPE_LOADER 433 select SYS_HAS_EARLY_PRINTK 434 select GPIOLIB 435 select SWAP_IO_SPACE 436 select BOOT_RAW 437 select CLKDEV_LOOKUP 438 select HAVE_LEGACY_CLK 439 select USE_OF 440 select PINCTRL 441 select PINCTRL_LANTIQ 442 select ARCH_HAS_RESET_CONTROLLER 443 select RESET_CONTROLLER 444 445config MACH_LOONGSON32 446 bool "Loongson 32-bit family of machines" 447 select SYS_SUPPORTS_ZBOOT 448 help 449 This enables support for the Loongson-1 family of machines. 450 451 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by 452 the Institute of Computing Technology (ICT), Chinese Academy of 453 Sciences (CAS). 454 455config MACH_LOONGSON2EF 456 bool "Loongson-2E/F family of machines" 457 select SYS_SUPPORTS_ZBOOT 458 help 459 This enables the support of early Loongson-2E/F family of machines. 460 461config MACH_LOONGSON64 462 bool "Loongson 64-bit family of machines" 463 select ARCH_SPARSEMEM_ENABLE 464 select ARCH_MIGHT_HAVE_PC_PARPORT 465 select ARCH_MIGHT_HAVE_PC_SERIO 466 select GENERIC_ISA_DMA_SUPPORT_BROKEN 467 select BOOT_ELF32 468 select BOARD_SCACHE 469 select CSRC_R4K 470 select CEVT_R4K 471 select CPU_HAS_WB 472 select FORCE_PCI 473 select ISA 474 select I8259 475 select IRQ_MIPS_CPU 476 select NO_EXCEPT_FILL 477 select NR_CPUS_DEFAULT_64 478 select USE_GENERIC_EARLY_PRINTK_8250 479 select PCI_DRIVERS_GENERIC 480 select SYS_HAS_CPU_LOONGSON64 481 select SYS_HAS_EARLY_PRINTK 482 select SYS_SUPPORTS_SMP 483 select SYS_SUPPORTS_HOTPLUG_CPU 484 select SYS_SUPPORTS_NUMA 485 select SYS_SUPPORTS_64BIT_KERNEL 486 select SYS_SUPPORTS_HIGHMEM 487 select SYS_SUPPORTS_LITTLE_ENDIAN 488 select SYS_SUPPORTS_ZBOOT 489 select ZONE_DMA32 490 select NUMA 491 select SMP 492 select COMMON_CLK 493 select USE_OF 494 select BUILTIN_DTB 495 select PCI_HOST_GENERIC 496 help 497 This enables the support of Loongson-2/3 family of machines. 498 499 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with 500 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E 501 and Loongson-2F which will be removed), developed by the Institute 502 of Computing Technology (ICT), Chinese Academy of Sciences (CAS). 503 504config MACH_PISTACHIO 505 bool "IMG Pistachio SoC based boards" 506 select BOOT_ELF32 507 select BOOT_RAW 508 select CEVT_R4K 509 select CLKSRC_MIPS_GIC 510 select COMMON_CLK 511 select CSRC_R4K 512 select DMA_NONCOHERENT 513 select GPIOLIB 514 select IRQ_MIPS_CPU 515 select MFD_SYSCON 516 select MIPS_CPU_SCACHE 517 select MIPS_GIC 518 select PINCTRL 519 select REGULATOR 520 select SYS_HAS_CPU_MIPS32_R2 521 select SYS_SUPPORTS_32BIT_KERNEL 522 select SYS_SUPPORTS_LITTLE_ENDIAN 523 select SYS_SUPPORTS_MIPS_CPS 524 select SYS_SUPPORTS_MULTITHREADING 525 select SYS_SUPPORTS_RELOCATABLE 526 select SYS_SUPPORTS_ZBOOT 527 select SYS_HAS_EARLY_PRINTK 528 select USE_GENERIC_EARLY_PRINTK_8250 529 select USE_OF 530 help 531 This enables support for the IMG Pistachio SoC platform. 532 533config MIPS_MALTA 534 bool "MIPS Malta board" 535 select ARCH_MAY_HAVE_PC_FDC 536 select ARCH_MIGHT_HAVE_PC_PARPORT 537 select ARCH_MIGHT_HAVE_PC_SERIO 538 select BOOT_ELF32 539 select BOOT_RAW 540 select BUILTIN_DTB 541 select CEVT_R4K 542 select CLKSRC_MIPS_GIC 543 select COMMON_CLK 544 select CSRC_R4K 545 select DMA_MAYBE_COHERENT 546 select GENERIC_ISA_DMA 547 select HAVE_PCSPKR_PLATFORM 548 select HAVE_PCI 549 select I8253 550 select I8259 551 select IRQ_MIPS_CPU 552 select MIPS_BONITO64 553 select MIPS_CPU_SCACHE 554 select MIPS_GIC 555 select MIPS_L1_CACHE_SHIFT_6 556 select MIPS_MSC 557 select PCI_GT64XXX_PCI0 558 select SMP_UP if SMP 559 select SWAP_IO_SPACE 560 select SYS_HAS_CPU_MIPS32_R1 561 select SYS_HAS_CPU_MIPS32_R2 562 select SYS_HAS_CPU_MIPS32_R3_5 563 select SYS_HAS_CPU_MIPS32_R5 564 select SYS_HAS_CPU_MIPS32_R6 565 select SYS_HAS_CPU_MIPS64_R1 566 select SYS_HAS_CPU_MIPS64_R2 567 select SYS_HAS_CPU_MIPS64_R6 568 select SYS_HAS_CPU_NEVADA 569 select SYS_HAS_CPU_RM7000 570 select SYS_SUPPORTS_32BIT_KERNEL 571 select SYS_SUPPORTS_64BIT_KERNEL 572 select SYS_SUPPORTS_BIG_ENDIAN 573 select SYS_SUPPORTS_HIGHMEM 574 select SYS_SUPPORTS_LITTLE_ENDIAN 575 select SYS_SUPPORTS_MICROMIPS 576 select SYS_SUPPORTS_MIPS16 577 select SYS_SUPPORTS_MIPS_CMP 578 select SYS_SUPPORTS_MIPS_CPS 579 select SYS_SUPPORTS_MULTITHREADING 580 select SYS_SUPPORTS_RELOCATABLE 581 select SYS_SUPPORTS_SMARTMIPS 582 select SYS_SUPPORTS_VPE_LOADER 583 select SYS_SUPPORTS_ZBOOT 584 select USE_OF 585 select WAR_ICACHE_REFILLS 586 select ZONE_DMA32 if 64BIT 587 help 588 This enables support for the MIPS Technologies Malta evaluation 589 board. 590 591config MACH_PIC32 592 bool "Microchip PIC32 Family" 593 help 594 This enables support for the Microchip PIC32 family of platforms. 595 596 Microchip PIC32 is a family of general-purpose 32 bit MIPS core 597 microcontrollers. 598 599config MACH_VR41XX 600 bool "NEC VR4100 series based machines" 601 select CEVT_R4K 602 select CSRC_R4K 603 select SYS_HAS_CPU_VR41XX 604 select SYS_SUPPORTS_MIPS16 605 select GPIOLIB 606 607config RALINK 608 bool "Ralink based machines" 609 select CEVT_R4K 610 select CSRC_R4K 611 select BOOT_RAW 612 select DMA_NONCOHERENT 613 select IRQ_MIPS_CPU 614 select USE_OF 615 select SYS_HAS_CPU_MIPS32_R1 616 select SYS_HAS_CPU_MIPS32_R2 617 select SYS_SUPPORTS_32BIT_KERNEL 618 select SYS_SUPPORTS_LITTLE_ENDIAN 619 select SYS_SUPPORTS_MIPS16 620 select SYS_SUPPORTS_ZBOOT 621 select SYS_HAS_EARLY_PRINTK 622 select CLKDEV_LOOKUP 623 select ARCH_HAS_RESET_CONTROLLER 624 select RESET_CONTROLLER 625 626config SGI_IP22 627 bool "SGI IP22 (Indy/Indigo2)" 628 select ARC_MEMORY 629 select ARC_PROMLIB 630 select FW_ARC 631 select FW_ARC32 632 select ARCH_MIGHT_HAVE_PC_SERIO 633 select BOOT_ELF32 634 select CEVT_R4K 635 select CSRC_R4K 636 select DEFAULT_SGI_PARTITION 637 select DMA_NONCOHERENT 638 select HAVE_EISA 639 select I8253 640 select I8259 641 select IP22_CPU_SCACHE 642 select IRQ_MIPS_CPU 643 select GENERIC_ISA_DMA_SUPPORT_BROKEN 644 select SGI_HAS_I8042 645 select SGI_HAS_INDYDOG 646 select SGI_HAS_HAL2 647 select SGI_HAS_SEEQ 648 select SGI_HAS_WD93 649 select SGI_HAS_ZILOG 650 select SWAP_IO_SPACE 651 select SYS_HAS_CPU_R4X00 652 select SYS_HAS_CPU_R5000 653 select SYS_HAS_EARLY_PRINTK 654 select SYS_SUPPORTS_32BIT_KERNEL 655 select SYS_SUPPORTS_64BIT_KERNEL 656 select SYS_SUPPORTS_BIG_ENDIAN 657 select WAR_R4600_V1_INDEX_ICACHEOP 658 select WAR_R4600_V1_HIT_CACHEOP 659 select WAR_R4600_V2_HIT_CACHEOP 660 select MIPS_L1_CACHE_SHIFT_7 661 help 662 This are the SGI Indy, Challenge S and Indigo2, as well as certain 663 OEM variants like the Tandem CMN B006S. To compile a Linux kernel 664 that runs on these, say Y here. 665 666config SGI_IP27 667 bool "SGI IP27 (Origin200/2000)" 668 select ARCH_HAS_PHYS_TO_DMA 669 select ARCH_SPARSEMEM_ENABLE 670 select FW_ARC 671 select FW_ARC64 672 select ARC_CMDLINE_ONLY 673 select BOOT_ELF64 674 select DEFAULT_SGI_PARTITION 675 select SYS_HAS_EARLY_PRINTK 676 select HAVE_PCI 677 select IRQ_MIPS_CPU 678 select IRQ_DOMAIN_HIERARCHY 679 select NR_CPUS_DEFAULT_64 680 select PCI_DRIVERS_GENERIC 681 select PCI_XTALK_BRIDGE 682 select SYS_HAS_CPU_R10000 683 select SYS_SUPPORTS_64BIT_KERNEL 684 select SYS_SUPPORTS_BIG_ENDIAN 685 select SYS_SUPPORTS_NUMA 686 select SYS_SUPPORTS_SMP 687 select WAR_R10000_LLSC 688 select MIPS_L1_CACHE_SHIFT_7 689 select NUMA 690 help 691 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics 692 workstations. To compile a Linux kernel that runs on these, say Y 693 here. 694 695config SGI_IP28 696 bool "SGI IP28 (Indigo2 R10k)" 697 select ARC_MEMORY 698 select ARC_PROMLIB 699 select FW_ARC 700 select FW_ARC64 701 select ARCH_MIGHT_HAVE_PC_SERIO 702 select BOOT_ELF64 703 select CEVT_R4K 704 select CSRC_R4K 705 select DEFAULT_SGI_PARTITION 706 select DMA_NONCOHERENT 707 select GENERIC_ISA_DMA_SUPPORT_BROKEN 708 select IRQ_MIPS_CPU 709 select HAVE_EISA 710 select I8253 711 select I8259 712 select SGI_HAS_I8042 713 select SGI_HAS_INDYDOG 714 select SGI_HAS_HAL2 715 select SGI_HAS_SEEQ 716 select SGI_HAS_WD93 717 select SGI_HAS_ZILOG 718 select SWAP_IO_SPACE 719 select SYS_HAS_CPU_R10000 720 select SYS_HAS_EARLY_PRINTK 721 select SYS_SUPPORTS_64BIT_KERNEL 722 select SYS_SUPPORTS_BIG_ENDIAN 723 select WAR_R10000_LLSC 724 select MIPS_L1_CACHE_SHIFT_7 725 help 726 This is the SGI Indigo2 with R10000 processor. To compile a Linux 727 kernel that runs on these, say Y here. 728 729config SGI_IP30 730 bool "SGI IP30 (Octane/Octane2)" 731 select ARCH_HAS_PHYS_TO_DMA 732 select FW_ARC 733 select FW_ARC64 734 select BOOT_ELF64 735 select CEVT_R4K 736 select CSRC_R4K 737 select SYNC_R4K if SMP 738 select ZONE_DMA32 739 select HAVE_PCI 740 select IRQ_MIPS_CPU 741 select IRQ_DOMAIN_HIERARCHY 742 select NR_CPUS_DEFAULT_2 743 select PCI_DRIVERS_GENERIC 744 select PCI_XTALK_BRIDGE 745 select SYS_HAS_EARLY_PRINTK 746 select SYS_HAS_CPU_R10000 747 select SYS_SUPPORTS_64BIT_KERNEL 748 select SYS_SUPPORTS_BIG_ENDIAN 749 select SYS_SUPPORTS_SMP 750 select WAR_R10000_LLSC 751 select MIPS_L1_CACHE_SHIFT_7 752 select ARC_MEMORY 753 help 754 These are the SGI Octane and Octane2 graphics workstations. To 755 compile a Linux kernel that runs on these, say Y here. 756 757config SGI_IP32 758 bool "SGI IP32 (O2)" 759 select ARC_MEMORY 760 select ARC_PROMLIB 761 select ARCH_HAS_PHYS_TO_DMA 762 select FW_ARC 763 select FW_ARC32 764 select BOOT_ELF32 765 select CEVT_R4K 766 select CSRC_R4K 767 select DMA_NONCOHERENT 768 select HAVE_PCI 769 select IRQ_MIPS_CPU 770 select R5000_CPU_SCACHE 771 select RM7000_CPU_SCACHE 772 select SYS_HAS_CPU_R5000 773 select SYS_HAS_CPU_R10000 if BROKEN 774 select SYS_HAS_CPU_RM7000 775 select SYS_HAS_CPU_NEVADA 776 select SYS_SUPPORTS_64BIT_KERNEL 777 select SYS_SUPPORTS_BIG_ENDIAN 778 select WAR_ICACHE_REFILLS 779 help 780 If you want this kernel to run on SGI O2 workstation, say Y here. 781 782config SIBYTE_CRHINE 783 bool "Sibyte BCM91120C-CRhine" 784 select BOOT_ELF32 785 select SIBYTE_BCM1120 786 select SWAP_IO_SPACE 787 select SYS_HAS_CPU_SB1 788 select SYS_SUPPORTS_BIG_ENDIAN 789 select SYS_SUPPORTS_LITTLE_ENDIAN 790 791config SIBYTE_CARMEL 792 bool "Sibyte BCM91120x-Carmel" 793 select BOOT_ELF32 794 select SIBYTE_BCM1120 795 select SWAP_IO_SPACE 796 select SYS_HAS_CPU_SB1 797 select SYS_SUPPORTS_BIG_ENDIAN 798 select SYS_SUPPORTS_LITTLE_ENDIAN 799 800config SIBYTE_CRHONE 801 bool "Sibyte BCM91125C-CRhone" 802 select BOOT_ELF32 803 select SIBYTE_BCM1125 804 select SWAP_IO_SPACE 805 select SYS_HAS_CPU_SB1 806 select SYS_SUPPORTS_BIG_ENDIAN 807 select SYS_SUPPORTS_HIGHMEM 808 select SYS_SUPPORTS_LITTLE_ENDIAN 809 810config SIBYTE_RHONE 811 bool "Sibyte BCM91125E-Rhone" 812 select BOOT_ELF32 813 select SIBYTE_BCM1125H 814 select SWAP_IO_SPACE 815 select SYS_HAS_CPU_SB1 816 select SYS_SUPPORTS_BIG_ENDIAN 817 select SYS_SUPPORTS_LITTLE_ENDIAN 818 819config SIBYTE_SWARM 820 bool "Sibyte BCM91250A-SWARM" 821 select BOOT_ELF32 822 select HAVE_PATA_PLATFORM 823 select SIBYTE_SB1250 824 select SWAP_IO_SPACE 825 select SYS_HAS_CPU_SB1 826 select SYS_SUPPORTS_BIG_ENDIAN 827 select SYS_SUPPORTS_HIGHMEM 828 select SYS_SUPPORTS_LITTLE_ENDIAN 829 select ZONE_DMA32 if 64BIT 830 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 831 832config SIBYTE_LITTLESUR 833 bool "Sibyte BCM91250C2-LittleSur" 834 select BOOT_ELF32 835 select HAVE_PATA_PLATFORM 836 select SIBYTE_SB1250 837 select SWAP_IO_SPACE 838 select SYS_HAS_CPU_SB1 839 select SYS_SUPPORTS_BIG_ENDIAN 840 select SYS_SUPPORTS_HIGHMEM 841 select SYS_SUPPORTS_LITTLE_ENDIAN 842 select ZONE_DMA32 if 64BIT 843 844config SIBYTE_SENTOSA 845 bool "Sibyte BCM91250E-Sentosa" 846 select BOOT_ELF32 847 select SIBYTE_SB1250 848 select SWAP_IO_SPACE 849 select SYS_HAS_CPU_SB1 850 select SYS_SUPPORTS_BIG_ENDIAN 851 select SYS_SUPPORTS_LITTLE_ENDIAN 852 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 853 854config SIBYTE_BIGSUR 855 bool "Sibyte BCM91480B-BigSur" 856 select BOOT_ELF32 857 select NR_CPUS_DEFAULT_4 858 select SIBYTE_BCM1x80 859 select SWAP_IO_SPACE 860 select SYS_HAS_CPU_SB1 861 select SYS_SUPPORTS_BIG_ENDIAN 862 select SYS_SUPPORTS_HIGHMEM 863 select SYS_SUPPORTS_LITTLE_ENDIAN 864 select ZONE_DMA32 if 64BIT 865 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI 866 867config SNI_RM 868 bool "SNI RM200/300/400" 869 select ARC_MEMORY 870 select ARC_PROMLIB 871 select FW_ARC if CPU_LITTLE_ENDIAN 872 select FW_ARC32 if CPU_LITTLE_ENDIAN 873 select FW_SNIPROM if CPU_BIG_ENDIAN 874 select ARCH_MAY_HAVE_PC_FDC 875 select ARCH_MIGHT_HAVE_PC_PARPORT 876 select ARCH_MIGHT_HAVE_PC_SERIO 877 select BOOT_ELF32 878 select CEVT_R4K 879 select CSRC_R4K 880 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN 881 select DMA_NONCOHERENT 882 select GENERIC_ISA_DMA 883 select HAVE_EISA 884 select HAVE_PCSPKR_PLATFORM 885 select HAVE_PCI 886 select IRQ_MIPS_CPU 887 select I8253 888 select I8259 889 select ISA 890 select MIPS_L1_CACHE_SHIFT_6 891 select SWAP_IO_SPACE if CPU_BIG_ENDIAN 892 select SYS_HAS_CPU_R4X00 893 select SYS_HAS_CPU_R5000 894 select SYS_HAS_CPU_R10000 895 select R5000_CPU_SCACHE 896 select SYS_HAS_EARLY_PRINTK 897 select SYS_SUPPORTS_32BIT_KERNEL 898 select SYS_SUPPORTS_64BIT_KERNEL 899 select SYS_SUPPORTS_BIG_ENDIAN 900 select SYS_SUPPORTS_HIGHMEM 901 select SYS_SUPPORTS_LITTLE_ENDIAN 902 select WAR_R4600_V2_HIT_CACHEOP 903 help 904 The SNI RM200/300/400 are MIPS-based machines manufactured by 905 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid 906 Technology and now in turn merged with Fujitsu. Say Y here to 907 support this machine type. 908 909config MACH_TX39XX 910 bool "Toshiba TX39 series based machines" 911 912config MACH_TX49XX 913 bool "Toshiba TX49 series based machines" 914 select WAR_TX49XX_ICACHE_INDEX_INV 915 916config MIKROTIK_RB532 917 bool "Mikrotik RB532 boards" 918 select CEVT_R4K 919 select CSRC_R4K 920 select DMA_NONCOHERENT 921 select HAVE_PCI 922 select IRQ_MIPS_CPU 923 select SYS_HAS_CPU_MIPS32_R1 924 select SYS_SUPPORTS_32BIT_KERNEL 925 select SYS_SUPPORTS_LITTLE_ENDIAN 926 select SWAP_IO_SPACE 927 select BOOT_RAW 928 select GPIOLIB 929 select MIPS_L1_CACHE_SHIFT_4 930 help 931 Support the Mikrotik(tm) RouterBoard 532 series, 932 based on the IDT RC32434 SoC. 933 934config CAVIUM_OCTEON_SOC 935 bool "Cavium Networks Octeon SoC based boards" 936 select CEVT_R4K 937 select ARCH_HAS_PHYS_TO_DMA 938 select HAVE_RAPIDIO 939 select PHYS_ADDR_T_64BIT 940 select SYS_SUPPORTS_64BIT_KERNEL 941 select SYS_SUPPORTS_BIG_ENDIAN 942 select EDAC_SUPPORT 943 select EDAC_ATOMIC_SCRUB 944 select SYS_SUPPORTS_LITTLE_ENDIAN 945 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN 946 select SYS_HAS_EARLY_PRINTK 947 select SYS_HAS_CPU_CAVIUM_OCTEON 948 select HAVE_PCI 949 select HAVE_PLAT_DELAY 950 select HAVE_PLAT_FW_INIT_CMDLINE 951 select HAVE_PLAT_MEMCPY 952 select ZONE_DMA32 953 select HOLES_IN_ZONE 954 select GPIOLIB 955 select USE_OF 956 select ARCH_SPARSEMEM_ENABLE 957 select SYS_SUPPORTS_SMP 958 select NR_CPUS_DEFAULT_64 959 select MIPS_NR_CPU_NR_MAP_1024 960 select BUILTIN_DTB 961 select MTD_COMPLEX_MAPPINGS 962 select SWIOTLB 963 select SYS_SUPPORTS_RELOCATABLE 964 help 965 This option supports all of the Octeon reference boards from Cavium 966 Networks. It builds a kernel that dynamically determines the Octeon 967 CPU type and supports all known board reference implementations. 968 Some of the supported boards are: 969 EBT3000 970 EBH3000 971 EBH3100 972 Thunder 973 Kodama 974 Hikari 975 Say Y here for most Octeon reference boards. 976 977config NLM_XLR_BOARD 978 bool "Netlogic XLR/XLS based systems" 979 select BOOT_ELF32 980 select NLM_COMMON 981 select SYS_HAS_CPU_XLR 982 select SYS_SUPPORTS_SMP 983 select HAVE_PCI 984 select SWAP_IO_SPACE 985 select SYS_SUPPORTS_32BIT_KERNEL 986 select SYS_SUPPORTS_64BIT_KERNEL 987 select PHYS_ADDR_T_64BIT 988 select SYS_SUPPORTS_BIG_ENDIAN 989 select SYS_SUPPORTS_HIGHMEM 990 select NR_CPUS_DEFAULT_32 991 select CEVT_R4K 992 select CSRC_R4K 993 select IRQ_MIPS_CPU 994 select ZONE_DMA32 if 64BIT 995 select SYNC_R4K 996 select SYS_HAS_EARLY_PRINTK 997 select SYS_SUPPORTS_ZBOOT 998 select SYS_SUPPORTS_ZBOOT_UART16550 999 help 1000 Support for systems based on Netlogic XLR and XLS processors. 1001 Say Y here if you have a XLR or XLS based board. 1002 1003config NLM_XLP_BOARD 1004 bool "Netlogic XLP based systems" 1005 select BOOT_ELF32 1006 select NLM_COMMON 1007 select SYS_HAS_CPU_XLP 1008 select SYS_SUPPORTS_SMP 1009 select HAVE_PCI 1010 select SYS_SUPPORTS_32BIT_KERNEL 1011 select SYS_SUPPORTS_64BIT_KERNEL 1012 select PHYS_ADDR_T_64BIT 1013 select GPIOLIB 1014 select SYS_SUPPORTS_BIG_ENDIAN 1015 select SYS_SUPPORTS_LITTLE_ENDIAN 1016 select SYS_SUPPORTS_HIGHMEM 1017 select NR_CPUS_DEFAULT_32 1018 select CEVT_R4K 1019 select CSRC_R4K 1020 select IRQ_MIPS_CPU 1021 select ZONE_DMA32 if 64BIT 1022 select SYNC_R4K 1023 select SYS_HAS_EARLY_PRINTK 1024 select USE_OF 1025 select SYS_SUPPORTS_ZBOOT 1026 select SYS_SUPPORTS_ZBOOT_UART16550 1027 help 1028 This board is based on Netlogic XLP Processor. 1029 Say Y here if you have a XLP based board. 1030 1031endchoice 1032 1033source "arch/mips/alchemy/Kconfig" 1034source "arch/mips/ath25/Kconfig" 1035source "arch/mips/ath79/Kconfig" 1036source "arch/mips/bcm47xx/Kconfig" 1037source "arch/mips/bcm63xx/Kconfig" 1038source "arch/mips/bmips/Kconfig" 1039source "arch/mips/generic/Kconfig" 1040source "arch/mips/ingenic/Kconfig" 1041source "arch/mips/jazz/Kconfig" 1042source "arch/mips/lantiq/Kconfig" 1043source "arch/mips/pic32/Kconfig" 1044source "arch/mips/pistachio/Kconfig" 1045source "arch/mips/ralink/Kconfig" 1046source "arch/mips/sgi-ip27/Kconfig" 1047source "arch/mips/sibyte/Kconfig" 1048source "arch/mips/txx9/Kconfig" 1049source "arch/mips/vr41xx/Kconfig" 1050source "arch/mips/cavium-octeon/Kconfig" 1051source "arch/mips/loongson2ef/Kconfig" 1052source "arch/mips/loongson32/Kconfig" 1053source "arch/mips/loongson64/Kconfig" 1054source "arch/mips/netlogic/Kconfig" 1055 1056endmenu 1057 1058config GENERIC_HWEIGHT 1059 bool 1060 default y 1061 1062config GENERIC_CALIBRATE_DELAY 1063 bool 1064 default y 1065 1066config SCHED_OMIT_FRAME_POINTER 1067 bool 1068 default y 1069 1070# 1071# Select some configuration options automatically based on user selections. 1072# 1073config FW_ARC 1074 bool 1075 1076config ARCH_MAY_HAVE_PC_FDC 1077 bool 1078 1079config BOOT_RAW 1080 bool 1081 1082config CEVT_BCM1480 1083 bool 1084 1085config CEVT_DS1287 1086 bool 1087 1088config CEVT_GT641XX 1089 bool 1090 1091config CEVT_R4K 1092 bool 1093 1094config CEVT_SB1250 1095 bool 1096 1097config CEVT_TXX9 1098 bool 1099 1100config CSRC_BCM1480 1101 bool 1102 1103config CSRC_IOASIC 1104 bool 1105 1106config CSRC_R4K 1107 select CLOCKSOURCE_WATCHDOG if CPU_FREQ 1108 bool 1109 1110config CSRC_SB1250 1111 bool 1112 1113config MIPS_CLOCK_VSYSCALL 1114 def_bool CSRC_R4K || CLKSRC_MIPS_GIC 1115 1116config GPIO_TXX9 1117 select GPIOLIB 1118 bool 1119 1120config FW_CFE 1121 bool 1122 1123config ARCH_SUPPORTS_UPROBES 1124 bool 1125 1126config DMA_MAYBE_COHERENT 1127 select ARCH_HAS_DMA_COHERENCE_H 1128 select DMA_NONCOHERENT 1129 bool 1130 1131config DMA_PERDEV_COHERENT 1132 bool 1133 select ARCH_HAS_SETUP_DMA_OPS 1134 select DMA_NONCOHERENT 1135 1136config DMA_NONCOHERENT 1137 bool 1138 # 1139 # MIPS allows mixing "slightly different" Cacheability and Coherency 1140 # Attribute bits. It is believed that the uncached access through 1141 # KSEG1 and the implementation specific "uncached accelerated" used 1142 # by pgprot_writcombine can be mixed, and the latter sometimes provides 1143 # significant advantages. 1144 # 1145 select ARCH_HAS_DMA_WRITE_COMBINE 1146 select ARCH_HAS_DMA_PREP_COHERENT 1147 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 1148 select ARCH_HAS_DMA_SET_UNCACHED 1149 select DMA_NONCOHERENT_MMAP 1150 select NEED_DMA_MAP_STATE 1151 1152config SYS_HAS_EARLY_PRINTK 1153 bool 1154 1155config SYS_SUPPORTS_HOTPLUG_CPU 1156 bool 1157 1158config MIPS_BONITO64 1159 bool 1160 1161config MIPS_MSC 1162 bool 1163 1164config SYNC_R4K 1165 bool 1166 1167config NO_IOPORT_MAP 1168 def_bool n 1169 1170config GENERIC_CSUM 1171 def_bool CPU_NO_LOAD_STORE_LR 1172 1173config GENERIC_ISA_DMA 1174 bool 1175 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n 1176 select ISA_DMA_API 1177 1178config GENERIC_ISA_DMA_SUPPORT_BROKEN 1179 bool 1180 select GENERIC_ISA_DMA 1181 1182config HAVE_PLAT_DELAY 1183 bool 1184 1185config HAVE_PLAT_FW_INIT_CMDLINE 1186 bool 1187 1188config HAVE_PLAT_MEMCPY 1189 bool 1190 1191config ISA_DMA_API 1192 bool 1193 1194config HOLES_IN_ZONE 1195 bool 1196 1197config SYS_SUPPORTS_RELOCATABLE 1198 bool 1199 help 1200 Selected if the platform supports relocating the kernel. 1201 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF 1202 to allow access to command line and entropy sources. 1203 1204config MIPS_CBPF_JIT 1205 def_bool y 1206 depends on BPF_JIT && HAVE_CBPF_JIT 1207 1208config MIPS_EBPF_JIT 1209 def_bool y 1210 depends on BPF_JIT && HAVE_EBPF_JIT 1211 1212 1213# 1214# Endianness selection. Sufficiently obscure so many users don't know what to 1215# answer,so we try hard to limit the available choices. Also the use of a 1216# choice statement should be more obvious to the user. 1217# 1218choice 1219 prompt "Endianness selection" 1220 help 1221 Some MIPS machines can be configured for either little or big endian 1222 byte order. These modes require different kernels and a different 1223 Linux distribution. In general there is one preferred byteorder for a 1224 particular system but some systems are just as commonly used in the 1225 one or the other endianness. 1226 1227config CPU_BIG_ENDIAN 1228 bool "Big endian" 1229 depends on SYS_SUPPORTS_BIG_ENDIAN 1230 1231config CPU_LITTLE_ENDIAN 1232 bool "Little endian" 1233 depends on SYS_SUPPORTS_LITTLE_ENDIAN 1234 1235endchoice 1236 1237config EXPORT_UASM 1238 bool 1239 1240config SYS_SUPPORTS_APM_EMULATION 1241 bool 1242 1243config SYS_SUPPORTS_BIG_ENDIAN 1244 bool 1245 1246config SYS_SUPPORTS_LITTLE_ENDIAN 1247 bool 1248 1249config SYS_SUPPORTS_HUGETLBFS 1250 bool 1251 depends on CPU_SUPPORTS_HUGEPAGES 1252 default y 1253 1254config MIPS_HUGE_TLB_SUPPORT 1255 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE 1256 1257config IRQ_CPU_RM7K 1258 bool 1259 1260config IRQ_MSP_SLP 1261 bool 1262 1263config IRQ_MSP_CIC 1264 bool 1265 1266config IRQ_TXX9 1267 bool 1268 1269config IRQ_GT641XX 1270 bool 1271 1272config PCI_GT64XXX_PCI0 1273 bool 1274 1275config PCI_XTALK_BRIDGE 1276 bool 1277 1278config NO_EXCEPT_FILL 1279 bool 1280 1281config MIPS_SPRAM 1282 bool 1283 1284config SWAP_IO_SPACE 1285 bool 1286 1287config SGI_HAS_INDYDOG 1288 bool 1289 1290config SGI_HAS_HAL2 1291 bool 1292 1293config SGI_HAS_SEEQ 1294 bool 1295 1296config SGI_HAS_WD93 1297 bool 1298 1299config SGI_HAS_ZILOG 1300 bool 1301 1302config SGI_HAS_I8042 1303 bool 1304 1305config DEFAULT_SGI_PARTITION 1306 bool 1307 1308config FW_ARC32 1309 bool 1310 1311config FW_SNIPROM 1312 bool 1313 1314config BOOT_ELF32 1315 bool 1316 1317config MIPS_L1_CACHE_SHIFT_4 1318 bool 1319 1320config MIPS_L1_CACHE_SHIFT_5 1321 bool 1322 1323config MIPS_L1_CACHE_SHIFT_6 1324 bool 1325 1326config MIPS_L1_CACHE_SHIFT_7 1327 bool 1328 1329config MIPS_L1_CACHE_SHIFT 1330 int 1331 default "7" if MIPS_L1_CACHE_SHIFT_7 1332 default "6" if MIPS_L1_CACHE_SHIFT_6 1333 default "5" if MIPS_L1_CACHE_SHIFT_5 1334 default "4" if MIPS_L1_CACHE_SHIFT_4 1335 default "5" 1336 1337config ARC_CMDLINE_ONLY 1338 bool 1339 1340config ARC_CONSOLE 1341 bool "ARC console support" 1342 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN) 1343 1344config ARC_MEMORY 1345 bool 1346 1347config ARC_PROMLIB 1348 bool 1349 1350config FW_ARC64 1351 bool 1352 1353config BOOT_ELF64 1354 bool 1355 1356menu "CPU selection" 1357 1358choice 1359 prompt "CPU type" 1360 default CPU_R4X00 1361 1362config CPU_LOONGSON64 1363 bool "Loongson 64-bit CPU" 1364 depends on SYS_HAS_CPU_LOONGSON64 1365 select ARCH_HAS_PHYS_TO_DMA 1366 select CPU_MIPSR2 1367 select CPU_HAS_PREFETCH 1368 select CPU_SUPPORTS_64BIT_KERNEL 1369 select CPU_SUPPORTS_HIGHMEM 1370 select CPU_SUPPORTS_HUGEPAGES 1371 select CPU_SUPPORTS_MSA 1372 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT 1373 select CPU_MIPSR2_IRQ_VI 1374 select WEAK_ORDERING 1375 select WEAK_REORDERING_BEYOND_LLSC 1376 select MIPS_ASID_BITS_VARIABLE 1377 select MIPS_PGD_C0_CONTEXT 1378 select MIPS_L1_CACHE_SHIFT_6 1379 select GPIOLIB 1380 select SWIOTLB 1381 select HAVE_KVM 1382 help 1383 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor 1384 cores implements the MIPS64R2 instruction set with many extensions, 1385 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000, 1386 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old 1387 Loongson-2E/2F is not covered here and will be removed in future. 1388 1389config LOONGSON3_ENHANCEMENT 1390 bool "New Loongson-3 CPU Enhancements" 1391 default n 1392 depends on CPU_LOONGSON64 1393 help 1394 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A 1395 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as 1396 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User 1397 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), 1398 Fast TLB refill support, etc. 1399 1400 This option enable those enhancements which are not probed at run 1401 time. If you want a generic kernel to run on all Loongson 3 machines, 1402 please say 'N' here. If you want a high-performance kernel to run on 1403 new Loongson-3 machines only, please say 'Y' here. 1404 1405config CPU_LOONGSON3_WORKAROUNDS 1406 bool "Old Loongson-3 LLSC Workarounds" 1407 default y if SMP 1408 depends on CPU_LOONGSON64 1409 help 1410 Loongson-3 processors have the llsc issues which require workarounds. 1411 Without workarounds the system may hang unexpectedly. 1412 1413 Newer Loongson-3 will fix these issues and no workarounds are needed. 1414 The workarounds have no significant side effect on them but may 1415 decrease the performance of the system so this option should be 1416 disabled unless the kernel is intended to be run on old systems. 1417 1418 If unsure, please say Y. 1419 1420config CPU_LOONGSON3_CPUCFG_EMULATION 1421 bool "Emulate the CPUCFG instruction on older Loongson cores" 1422 default y 1423 depends on CPU_LOONGSON64 1424 help 1425 Loongson-3A R4 and newer have the CPUCFG instruction available for 1426 userland to query CPU capabilities, much like CPUID on x86. This 1427 option provides emulation of the instruction on older Loongson 1428 cores, back to Loongson-3A1000. 1429 1430 If unsure, please say Y. 1431 1432config CPU_LOONGSON2E 1433 bool "Loongson 2E" 1434 depends on SYS_HAS_CPU_LOONGSON2E 1435 select CPU_LOONGSON2EF 1436 help 1437 The Loongson 2E processor implements the MIPS III instruction set 1438 with many extensions. 1439 1440 It has an internal FPGA northbridge, which is compatible to 1441 bonito64. 1442 1443config CPU_LOONGSON2F 1444 bool "Loongson 2F" 1445 depends on SYS_HAS_CPU_LOONGSON2F 1446 select CPU_LOONGSON2EF 1447 select GPIOLIB 1448 help 1449 The Loongson 2F processor implements the MIPS III instruction set 1450 with many extensions. 1451 1452 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller 1453 have a similar programming interface with FPGA northbridge used in 1454 Loongson2E. 1455 1456config CPU_LOONGSON1B 1457 bool "Loongson 1B" 1458 depends on SYS_HAS_CPU_LOONGSON1B 1459 select CPU_LOONGSON32 1460 select LEDS_GPIO_REGISTER 1461 help 1462 The Loongson 1B is a 32-bit SoC, which implements the MIPS32 1463 Release 1 instruction set and part of the MIPS32 Release 2 1464 instruction set. 1465 1466config CPU_LOONGSON1C 1467 bool "Loongson 1C" 1468 depends on SYS_HAS_CPU_LOONGSON1C 1469 select CPU_LOONGSON32 1470 select LEDS_GPIO_REGISTER 1471 help 1472 The Loongson 1C is a 32-bit SoC, which implements the MIPS32 1473 Release 1 instruction set and part of the MIPS32 Release 2 1474 instruction set. 1475 1476config CPU_MIPS32_R1 1477 bool "MIPS32 Release 1" 1478 depends on SYS_HAS_CPU_MIPS32_R1 1479 select CPU_HAS_PREFETCH 1480 select CPU_SUPPORTS_32BIT_KERNEL 1481 select CPU_SUPPORTS_HIGHMEM 1482 help 1483 Choose this option to build a kernel for release 1 or later of the 1484 MIPS32 architecture. Most modern embedded systems with a 32-bit 1485 MIPS processor are based on a MIPS32 processor. If you know the 1486 specific type of processor in your system, choose those that one 1487 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1488 Release 2 of the MIPS32 architecture is available since several 1489 years so chances are you even have a MIPS32 Release 2 processor 1490 in which case you should choose CPU_MIPS32_R2 instead for better 1491 performance. 1492 1493config CPU_MIPS32_R2 1494 bool "MIPS32 Release 2" 1495 depends on SYS_HAS_CPU_MIPS32_R2 1496 select CPU_HAS_PREFETCH 1497 select CPU_SUPPORTS_32BIT_KERNEL 1498 select CPU_SUPPORTS_HIGHMEM 1499 select CPU_SUPPORTS_MSA 1500 select HAVE_KVM 1501 help 1502 Choose this option to build a kernel for release 2 or later of the 1503 MIPS32 architecture. Most modern embedded systems with a 32-bit 1504 MIPS processor are based on a MIPS32 processor. If you know the 1505 specific type of processor in your system, choose those that one 1506 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system. 1507 1508config CPU_MIPS32_R5 1509 bool "MIPS32 Release 5" 1510 depends on SYS_HAS_CPU_MIPS32_R5 1511 select CPU_HAS_PREFETCH 1512 select CPU_SUPPORTS_32BIT_KERNEL 1513 select CPU_SUPPORTS_HIGHMEM 1514 select CPU_SUPPORTS_MSA 1515 select HAVE_KVM 1516 select MIPS_O32_FP64_SUPPORT 1517 help 1518 Choose this option to build a kernel for release 5 or later of the 1519 MIPS32 architecture. New MIPS processors, starting with the Warrior 1520 family, are based on a MIPS32r5 processor. If you own an older 1521 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1522 1523config CPU_MIPS32_R6 1524 bool "MIPS32 Release 6" 1525 depends on SYS_HAS_CPU_MIPS32_R6 1526 select CPU_HAS_PREFETCH 1527 select CPU_NO_LOAD_STORE_LR 1528 select CPU_SUPPORTS_32BIT_KERNEL 1529 select CPU_SUPPORTS_HIGHMEM 1530 select CPU_SUPPORTS_MSA 1531 select HAVE_KVM 1532 select MIPS_O32_FP64_SUPPORT 1533 help 1534 Choose this option to build a kernel for release 6 or later of the 1535 MIPS32 architecture. New MIPS processors, starting with the Warrior 1536 family, are based on a MIPS32r6 processor. If you own an older 1537 processor, you probably need to select MIPS32r1 or MIPS32r2 instead. 1538 1539config CPU_MIPS64_R1 1540 bool "MIPS64 Release 1" 1541 depends on SYS_HAS_CPU_MIPS64_R1 1542 select CPU_HAS_PREFETCH 1543 select CPU_SUPPORTS_32BIT_KERNEL 1544 select CPU_SUPPORTS_64BIT_KERNEL 1545 select CPU_SUPPORTS_HIGHMEM 1546 select CPU_SUPPORTS_HUGEPAGES 1547 help 1548 Choose this option to build a kernel for release 1 or later of the 1549 MIPS64 architecture. Many modern embedded systems with a 64-bit 1550 MIPS processor are based on a MIPS64 processor. If you know the 1551 specific type of processor in your system, choose those that one 1552 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1553 Release 2 of the MIPS64 architecture is available since several 1554 years so chances are you even have a MIPS64 Release 2 processor 1555 in which case you should choose CPU_MIPS64_R2 instead for better 1556 performance. 1557 1558config CPU_MIPS64_R2 1559 bool "MIPS64 Release 2" 1560 depends on SYS_HAS_CPU_MIPS64_R2 1561 select CPU_HAS_PREFETCH 1562 select CPU_SUPPORTS_32BIT_KERNEL 1563 select CPU_SUPPORTS_64BIT_KERNEL 1564 select CPU_SUPPORTS_HIGHMEM 1565 select CPU_SUPPORTS_HUGEPAGES 1566 select CPU_SUPPORTS_MSA 1567 select HAVE_KVM 1568 help 1569 Choose this option to build a kernel for release 2 or later of the 1570 MIPS64 architecture. Many modern embedded systems with a 64-bit 1571 MIPS processor are based on a MIPS64 processor. If you know the 1572 specific type of processor in your system, choose those that one 1573 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system. 1574 1575config CPU_MIPS64_R5 1576 bool "MIPS64 Release 5" 1577 depends on SYS_HAS_CPU_MIPS64_R5 1578 select CPU_HAS_PREFETCH 1579 select CPU_SUPPORTS_32BIT_KERNEL 1580 select CPU_SUPPORTS_64BIT_KERNEL 1581 select CPU_SUPPORTS_HIGHMEM 1582 select CPU_SUPPORTS_HUGEPAGES 1583 select CPU_SUPPORTS_MSA 1584 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1585 select HAVE_KVM 1586 help 1587 Choose this option to build a kernel for release 5 or later of the 1588 MIPS64 architecture. This is a intermediate MIPS architecture 1589 release partly implementing release 6 features. Though there is no 1590 any hardware known to be based on this release. 1591 1592config CPU_MIPS64_R6 1593 bool "MIPS64 Release 6" 1594 depends on SYS_HAS_CPU_MIPS64_R6 1595 select CPU_HAS_PREFETCH 1596 select CPU_NO_LOAD_STORE_LR 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 MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32 1603 select HAVE_KVM 1604 help 1605 Choose this option to build a kernel for release 6 or later of the 1606 MIPS64 architecture. New MIPS processors, starting with the Warrior 1607 family, are based on a MIPS64r6 processor. If you own an older 1608 processor, you probably need to select MIPS64r1 or MIPS64r2 instead. 1609 1610config CPU_P5600 1611 bool "MIPS Warrior P5600" 1612 depends on SYS_HAS_CPU_P5600 1613 select CPU_HAS_PREFETCH 1614 select CPU_SUPPORTS_32BIT_KERNEL 1615 select CPU_SUPPORTS_HIGHMEM 1616 select CPU_SUPPORTS_MSA 1617 select CPU_SUPPORTS_CPUFREQ 1618 select CPU_MIPSR2_IRQ_VI 1619 select CPU_MIPSR2_IRQ_EI 1620 select HAVE_KVM 1621 select MIPS_O32_FP64_SUPPORT 1622 help 1623 Choose this option to build a kernel for MIPS Warrior P5600 CPU. 1624 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes, 1625 MMU with two-levels TLB, UCA, MSA, MDU core level features and system 1626 level features like up to six P5600 calculation cores, CM2 with L2 1627 cache, IOCU/IOMMU (though might be unused depending on the system- 1628 specific IP core configuration), GIC, CPC, virtualisation module, 1629 eJTAG and PDtrace. 1630 1631config CPU_R3000 1632 bool "R3000" 1633 depends on SYS_HAS_CPU_R3000 1634 select CPU_HAS_WB 1635 select CPU_R3K_TLB 1636 select CPU_SUPPORTS_32BIT_KERNEL 1637 select CPU_SUPPORTS_HIGHMEM 1638 help 1639 Please make sure to pick the right CPU type. Linux/MIPS is not 1640 designed to be generic, i.e. Kernels compiled for R3000 CPUs will 1641 *not* work on R4000 machines and vice versa. However, since most 1642 of the supported machines have an R4000 (or similar) CPU, R4x00 1643 might be a safe bet. If the resulting kernel does not work, 1644 try to recompile with R3000. 1645 1646config CPU_TX39XX 1647 bool "R39XX" 1648 depends on SYS_HAS_CPU_TX39XX 1649 select CPU_SUPPORTS_32BIT_KERNEL 1650 select CPU_R3K_TLB 1651 1652config CPU_VR41XX 1653 bool "R41xx" 1654 depends on SYS_HAS_CPU_VR41XX 1655 select CPU_SUPPORTS_32BIT_KERNEL 1656 select CPU_SUPPORTS_64BIT_KERNEL 1657 help 1658 The options selects support for the NEC VR4100 series of processors. 1659 Only choose this option if you have one of these processors as a 1660 kernel built with this option will not run on any other type of 1661 processor or vice versa. 1662 1663config CPU_R4X00 1664 bool "R4x00" 1665 depends on SYS_HAS_CPU_R4X00 1666 select CPU_SUPPORTS_32BIT_KERNEL 1667 select CPU_SUPPORTS_64BIT_KERNEL 1668 select CPU_SUPPORTS_HUGEPAGES 1669 help 1670 MIPS Technologies R4000-series processors other than 4300, including 1671 the R4000, R4400, R4600, and 4700. 1672 1673config CPU_TX49XX 1674 bool "R49XX" 1675 depends on SYS_HAS_CPU_TX49XX 1676 select CPU_HAS_PREFETCH 1677 select CPU_SUPPORTS_32BIT_KERNEL 1678 select CPU_SUPPORTS_64BIT_KERNEL 1679 select CPU_SUPPORTS_HUGEPAGES 1680 1681config CPU_R5000 1682 bool "R5000" 1683 depends on SYS_HAS_CPU_R5000 1684 select CPU_SUPPORTS_32BIT_KERNEL 1685 select CPU_SUPPORTS_64BIT_KERNEL 1686 select CPU_SUPPORTS_HUGEPAGES 1687 help 1688 MIPS Technologies R5000-series processors other than the Nevada. 1689 1690config CPU_R5500 1691 bool "R5500" 1692 depends on SYS_HAS_CPU_R5500 1693 select CPU_SUPPORTS_32BIT_KERNEL 1694 select CPU_SUPPORTS_64BIT_KERNEL 1695 select CPU_SUPPORTS_HUGEPAGES 1696 help 1697 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV 1698 instruction set. 1699 1700config CPU_NEVADA 1701 bool "RM52xx" 1702 depends on SYS_HAS_CPU_NEVADA 1703 select CPU_SUPPORTS_32BIT_KERNEL 1704 select CPU_SUPPORTS_64BIT_KERNEL 1705 select CPU_SUPPORTS_HUGEPAGES 1706 help 1707 QED / PMC-Sierra RM52xx-series ("Nevada") processors. 1708 1709config CPU_R10000 1710 bool "R10000" 1711 depends on SYS_HAS_CPU_R10000 1712 select CPU_HAS_PREFETCH 1713 select CPU_SUPPORTS_32BIT_KERNEL 1714 select CPU_SUPPORTS_64BIT_KERNEL 1715 select CPU_SUPPORTS_HIGHMEM 1716 select CPU_SUPPORTS_HUGEPAGES 1717 help 1718 MIPS Technologies R10000-series processors. 1719 1720config CPU_RM7000 1721 bool "RM7000" 1722 depends on SYS_HAS_CPU_RM7000 1723 select CPU_HAS_PREFETCH 1724 select CPU_SUPPORTS_32BIT_KERNEL 1725 select CPU_SUPPORTS_64BIT_KERNEL 1726 select CPU_SUPPORTS_HIGHMEM 1727 select CPU_SUPPORTS_HUGEPAGES 1728 1729config CPU_SB1 1730 bool "SB1" 1731 depends on SYS_HAS_CPU_SB1 1732 select CPU_SUPPORTS_32BIT_KERNEL 1733 select CPU_SUPPORTS_64BIT_KERNEL 1734 select CPU_SUPPORTS_HIGHMEM 1735 select CPU_SUPPORTS_HUGEPAGES 1736 select WEAK_ORDERING 1737 1738config CPU_CAVIUM_OCTEON 1739 bool "Cavium Octeon processor" 1740 depends on SYS_HAS_CPU_CAVIUM_OCTEON 1741 select CPU_HAS_PREFETCH 1742 select CPU_SUPPORTS_64BIT_KERNEL 1743 select WEAK_ORDERING 1744 select CPU_SUPPORTS_HIGHMEM 1745 select CPU_SUPPORTS_HUGEPAGES 1746 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1747 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN 1748 select MIPS_L1_CACHE_SHIFT_7 1749 select HAVE_KVM 1750 help 1751 The Cavium Octeon processor is a highly integrated chip containing 1752 many ethernet hardware widgets for networking tasks. The processor 1753 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets. 1754 Full details can be found at http://www.caviumnetworks.com. 1755 1756config CPU_BMIPS 1757 bool "Broadcom BMIPS" 1758 depends on SYS_HAS_CPU_BMIPS 1759 select CPU_MIPS32 1760 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300 1761 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350 1762 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380 1763 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000 1764 select CPU_SUPPORTS_32BIT_KERNEL 1765 select DMA_NONCOHERENT 1766 select IRQ_MIPS_CPU 1767 select SWAP_IO_SPACE 1768 select WEAK_ORDERING 1769 select CPU_SUPPORTS_HIGHMEM 1770 select CPU_HAS_PREFETCH 1771 select CPU_SUPPORTS_CPUFREQ 1772 select MIPS_EXTERNAL_TIMER 1773 help 1774 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors. 1775 1776config CPU_XLR 1777 bool "Netlogic XLR SoC" 1778 depends on SYS_HAS_CPU_XLR 1779 select CPU_SUPPORTS_32BIT_KERNEL 1780 select CPU_SUPPORTS_64BIT_KERNEL 1781 select CPU_SUPPORTS_HIGHMEM 1782 select CPU_SUPPORTS_HUGEPAGES 1783 select WEAK_ORDERING 1784 select WEAK_REORDERING_BEYOND_LLSC 1785 help 1786 Netlogic Microsystems XLR/XLS processors. 1787 1788config CPU_XLP 1789 bool "Netlogic XLP SoC" 1790 depends on SYS_HAS_CPU_XLP 1791 select CPU_SUPPORTS_32BIT_KERNEL 1792 select CPU_SUPPORTS_64BIT_KERNEL 1793 select CPU_SUPPORTS_HIGHMEM 1794 select WEAK_ORDERING 1795 select WEAK_REORDERING_BEYOND_LLSC 1796 select CPU_HAS_PREFETCH 1797 select CPU_MIPSR2 1798 select CPU_SUPPORTS_HUGEPAGES 1799 select MIPS_ASID_BITS_VARIABLE 1800 help 1801 Netlogic Microsystems XLP processors. 1802endchoice 1803 1804config CPU_MIPS32_3_5_FEATURES 1805 bool "MIPS32 Release 3.5 Features" 1806 depends on SYS_HAS_CPU_MIPS32_R3_5 1807 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \ 1808 CPU_P5600 1809 help 1810 Choose this option to build a kernel for release 2 or later of the 1811 MIPS32 architecture including features from the 3.5 release such as 1812 support for Enhanced Virtual Addressing (EVA). 1813 1814config CPU_MIPS32_3_5_EVA 1815 bool "Enhanced Virtual Addressing (EVA)" 1816 depends on CPU_MIPS32_3_5_FEATURES 1817 select EVA 1818 default y 1819 help 1820 Choose this option if you want to enable the Enhanced Virtual 1821 Addressing (EVA) on your MIPS32 core (such as proAptiv). 1822 One of its primary benefits is an increase in the maximum size 1823 of lowmem (up to 3GB). If unsure, say 'N' here. 1824 1825config CPU_MIPS32_R5_FEATURES 1826 bool "MIPS32 Release 5 Features" 1827 depends on SYS_HAS_CPU_MIPS32_R5 1828 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600 1829 help 1830 Choose this option to build a kernel for release 2 or later of the 1831 MIPS32 architecture including features from release 5 such as 1832 support for Extended Physical Addressing (XPA). 1833 1834config CPU_MIPS32_R5_XPA 1835 bool "Extended Physical Addressing (XPA)" 1836 depends on CPU_MIPS32_R5_FEATURES 1837 depends on !EVA 1838 depends on !PAGE_SIZE_4KB 1839 depends on SYS_SUPPORTS_HIGHMEM 1840 select XPA 1841 select HIGHMEM 1842 select PHYS_ADDR_T_64BIT 1843 default n 1844 help 1845 Choose this option if you want to enable the Extended Physical 1846 Addressing (XPA) on your MIPS32 core (such as P5600 series). The 1847 benefit is to increase physical addressing equal to or greater 1848 than 40 bits. Note that this has the side effect of turning on 1849 64-bit addressing which in turn makes the PTEs 64-bit in size. 1850 If unsure, say 'N' here. 1851 1852if CPU_LOONGSON2F 1853config CPU_NOP_WORKAROUNDS 1854 bool 1855 1856config CPU_JUMP_WORKAROUNDS 1857 bool 1858 1859config CPU_LOONGSON2F_WORKAROUNDS 1860 bool "Loongson 2F Workarounds" 1861 default y 1862 select CPU_NOP_WORKAROUNDS 1863 select CPU_JUMP_WORKAROUNDS 1864 help 1865 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which 1866 require workarounds. Without workarounds the system may hang 1867 unexpectedly. For more information please refer to the gas 1868 -mfix-loongson2f-nop and -mfix-loongson2f-jump options. 1869 1870 Loongson 2F03 and later have fixed these issues and no workarounds 1871 are needed. The workarounds have no significant side effect on them 1872 but may decrease the performance of the system so this option should 1873 be disabled unless the kernel is intended to be run on 2F01 or 2F02 1874 systems. 1875 1876 If unsure, please say Y. 1877endif # CPU_LOONGSON2F 1878 1879config SYS_SUPPORTS_ZBOOT 1880 bool 1881 select HAVE_KERNEL_GZIP 1882 select HAVE_KERNEL_BZIP2 1883 select HAVE_KERNEL_LZ4 1884 select HAVE_KERNEL_LZMA 1885 select HAVE_KERNEL_LZO 1886 select HAVE_KERNEL_XZ 1887 select HAVE_KERNEL_ZSTD 1888 1889config SYS_SUPPORTS_ZBOOT_UART16550 1890 bool 1891 select SYS_SUPPORTS_ZBOOT 1892 1893config SYS_SUPPORTS_ZBOOT_UART_PROM 1894 bool 1895 select SYS_SUPPORTS_ZBOOT 1896 1897config CPU_LOONGSON2EF 1898 bool 1899 select CPU_SUPPORTS_32BIT_KERNEL 1900 select CPU_SUPPORTS_64BIT_KERNEL 1901 select CPU_SUPPORTS_HIGHMEM 1902 select CPU_SUPPORTS_HUGEPAGES 1903 select ARCH_HAS_PHYS_TO_DMA 1904 1905config CPU_LOONGSON32 1906 bool 1907 select CPU_MIPS32 1908 select CPU_MIPSR2 1909 select CPU_HAS_PREFETCH 1910 select CPU_SUPPORTS_32BIT_KERNEL 1911 select CPU_SUPPORTS_HIGHMEM 1912 select CPU_SUPPORTS_CPUFREQ 1913 1914config CPU_BMIPS32_3300 1915 select SMP_UP if SMP 1916 bool 1917 1918config CPU_BMIPS4350 1919 bool 1920 select SYS_SUPPORTS_SMP 1921 select SYS_SUPPORTS_HOTPLUG_CPU 1922 1923config CPU_BMIPS4380 1924 bool 1925 select MIPS_L1_CACHE_SHIFT_6 1926 select SYS_SUPPORTS_SMP 1927 select SYS_SUPPORTS_HOTPLUG_CPU 1928 select CPU_HAS_RIXI 1929 1930config CPU_BMIPS5000 1931 bool 1932 select MIPS_CPU_SCACHE 1933 select MIPS_L1_CACHE_SHIFT_7 1934 select SYS_SUPPORTS_SMP 1935 select SYS_SUPPORTS_HOTPLUG_CPU 1936 select CPU_HAS_RIXI 1937 1938config SYS_HAS_CPU_LOONGSON64 1939 bool 1940 select CPU_SUPPORTS_CPUFREQ 1941 select CPU_HAS_RIXI 1942 1943config SYS_HAS_CPU_LOONGSON2E 1944 bool 1945 1946config SYS_HAS_CPU_LOONGSON2F 1947 bool 1948 select CPU_SUPPORTS_CPUFREQ 1949 select CPU_SUPPORTS_ADDRWINCFG if 64BIT 1950 1951config SYS_HAS_CPU_LOONGSON1B 1952 bool 1953 1954config SYS_HAS_CPU_LOONGSON1C 1955 bool 1956 1957config SYS_HAS_CPU_MIPS32_R1 1958 bool 1959 1960config SYS_HAS_CPU_MIPS32_R2 1961 bool 1962 1963config SYS_HAS_CPU_MIPS32_R3_5 1964 bool 1965 1966config SYS_HAS_CPU_MIPS32_R5 1967 bool 1968 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1969 1970config SYS_HAS_CPU_MIPS32_R6 1971 bool 1972 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1973 1974config SYS_HAS_CPU_MIPS64_R1 1975 bool 1976 1977config SYS_HAS_CPU_MIPS64_R2 1978 bool 1979 1980config SYS_HAS_CPU_MIPS64_R6 1981 bool 1982 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1983 1984config SYS_HAS_CPU_P5600 1985 bool 1986 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 1987 1988config SYS_HAS_CPU_R3000 1989 bool 1990 1991config SYS_HAS_CPU_TX39XX 1992 bool 1993 1994config SYS_HAS_CPU_VR41XX 1995 bool 1996 1997config SYS_HAS_CPU_R4X00 1998 bool 1999 2000config SYS_HAS_CPU_TX49XX 2001 bool 2002 2003config SYS_HAS_CPU_R5000 2004 bool 2005 2006config SYS_HAS_CPU_R5500 2007 bool 2008 2009config SYS_HAS_CPU_NEVADA 2010 bool 2011 2012config SYS_HAS_CPU_R10000 2013 bool 2014 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT 2015 2016config SYS_HAS_CPU_RM7000 2017 bool 2018 2019config SYS_HAS_CPU_SB1 2020 bool 2021 2022config SYS_HAS_CPU_CAVIUM_OCTEON 2023 bool 2024 2025config SYS_HAS_CPU_BMIPS 2026 bool 2027 2028config SYS_HAS_CPU_BMIPS32_3300 2029 bool 2030 select SYS_HAS_CPU_BMIPS 2031 2032config SYS_HAS_CPU_BMIPS4350 2033 bool 2034 select SYS_HAS_CPU_BMIPS 2035 2036config SYS_HAS_CPU_BMIPS4380 2037 bool 2038 select SYS_HAS_CPU_BMIPS 2039 2040config SYS_HAS_CPU_BMIPS5000 2041 bool 2042 select SYS_HAS_CPU_BMIPS 2043 select ARCH_HAS_SYNC_DMA_FOR_CPU 2044 2045config SYS_HAS_CPU_XLR 2046 bool 2047 2048config SYS_HAS_CPU_XLP 2049 bool 2050 2051# 2052# CPU may reorder R->R, R->W, W->R, W->W 2053# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC 2054# 2055config WEAK_ORDERING 2056 bool 2057 2058# 2059# CPU may reorder reads and writes beyond LL/SC 2060# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC 2061# 2062config WEAK_REORDERING_BEYOND_LLSC 2063 bool 2064endmenu 2065 2066# 2067# These two indicate any level of the MIPS32 and MIPS64 architecture 2068# 2069config CPU_MIPS32 2070 bool 2071 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \ 2072 CPU_MIPS32_R6 || CPU_P5600 2073 2074config CPU_MIPS64 2075 bool 2076 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \ 2077 CPU_MIPS64_R6 2078 2079# 2080# These indicate the revision of the architecture 2081# 2082config CPU_MIPSR1 2083 bool 2084 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1 2085 2086config CPU_MIPSR2 2087 bool 2088 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON 2089 select CPU_HAS_RIXI 2090 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2091 select MIPS_SPRAM 2092 2093config CPU_MIPSR5 2094 bool 2095 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600 2096 select CPU_HAS_RIXI 2097 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2098 select MIPS_SPRAM 2099 2100config CPU_MIPSR6 2101 bool 2102 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6 2103 select CPU_HAS_RIXI 2104 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN 2105 select HAVE_ARCH_BITREVERSE 2106 select MIPS_ASID_BITS_VARIABLE 2107 select MIPS_CRC_SUPPORT 2108 select MIPS_SPRAM 2109 2110config TARGET_ISA_REV 2111 int 2112 default 1 if CPU_MIPSR1 2113 default 2 if CPU_MIPSR2 2114 default 5 if CPU_MIPSR5 2115 default 6 if CPU_MIPSR6 2116 default 0 2117 help 2118 Reflects the ISA revision being targeted by the kernel build. This 2119 is effectively the Kconfig equivalent of MIPS_ISA_REV. 2120 2121config EVA 2122 bool 2123 2124config XPA 2125 bool 2126 2127config SYS_SUPPORTS_32BIT_KERNEL 2128 bool 2129config SYS_SUPPORTS_64BIT_KERNEL 2130 bool 2131config CPU_SUPPORTS_32BIT_KERNEL 2132 bool 2133config CPU_SUPPORTS_64BIT_KERNEL 2134 bool 2135config CPU_SUPPORTS_CPUFREQ 2136 bool 2137config CPU_SUPPORTS_ADDRWINCFG 2138 bool 2139config CPU_SUPPORTS_HUGEPAGES 2140 bool 2141 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) 2142config MIPS_PGD_C0_CONTEXT 2143 bool 2144 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP 2145 2146# 2147# Set to y for ptrace access to watch registers. 2148# 2149config HARDWARE_WATCHPOINTS 2150 bool 2151 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6 2152 2153menu "Kernel type" 2154 2155choice 2156 prompt "Kernel code model" 2157 help 2158 You should only select this option if you have a workload that 2159 actually benefits from 64-bit processing or if your machine has 2160 large memory. You will only be presented a single option in this 2161 menu if your system does not support both 32-bit and 64-bit kernels. 2162 2163config 32BIT 2164 bool "32-bit kernel" 2165 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL 2166 select TRAD_SIGNALS 2167 help 2168 Select this option if you want to build a 32-bit kernel. 2169 2170config 64BIT 2171 bool "64-bit kernel" 2172 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL 2173 help 2174 Select this option if you want to build a 64-bit kernel. 2175 2176endchoice 2177 2178config KVM_GUEST 2179 bool "KVM Guest Kernel" 2180 depends on CPU_MIPS32_R2 2181 depends on BROKEN_ON_SMP 2182 help 2183 Select this option if building a guest kernel for KVM (Trap & Emulate) 2184 mode. 2185 2186config KVM_GUEST_TIMER_FREQ 2187 int "Count/Compare Timer Frequency (MHz)" 2188 depends on KVM_GUEST 2189 default 100 2190 help 2191 Set this to non-zero if building a guest kernel for KVM to skip RTC 2192 emulation when determining guest CPU Frequency. Instead, the guest's 2193 timer frequency is specified directly. 2194 2195config MIPS_VA_BITS_48 2196 bool "48 bits virtual memory" 2197 depends on 64BIT 2198 help 2199 Support a maximum at least 48 bits of application virtual 2200 memory. Default is 40 bits or less, depending on the CPU. 2201 For page sizes 16k and above, this option results in a small 2202 memory overhead for page tables. For 4k page size, a fourth 2203 level of page tables is added which imposes both a memory 2204 overhead as well as slower TLB fault handling. 2205 2206 If unsure, say N. 2207 2208choice 2209 prompt "Kernel page size" 2210 default PAGE_SIZE_4KB 2211 2212config PAGE_SIZE_4KB 2213 bool "4kB" 2214 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64 2215 help 2216 This option select the standard 4kB Linux page size. On some 2217 R3000-family processors this is the only available page size. Using 2218 4kB page size will minimize memory consumption and is therefore 2219 recommended for low memory systems. 2220 2221config PAGE_SIZE_8KB 2222 bool "8kB" 2223 depends on CPU_CAVIUM_OCTEON 2224 depends on !MIPS_VA_BITS_48 2225 help 2226 Using 8kB page size will result in higher performance kernel at 2227 the price of higher memory consumption. This option is available 2228 only on cnMIPS processors. Note that you will need a suitable Linux 2229 distribution to support this. 2230 2231config PAGE_SIZE_16KB 2232 bool "16kB" 2233 depends on !CPU_R3000 && !CPU_TX39XX 2234 help 2235 Using 16kB page size will result in higher performance kernel at 2236 the price of higher memory consumption. This option is available on 2237 all non-R3000 family processors. Note that you will need a suitable 2238 Linux distribution to support this. 2239 2240config PAGE_SIZE_32KB 2241 bool "32kB" 2242 depends on CPU_CAVIUM_OCTEON 2243 depends on !MIPS_VA_BITS_48 2244 help 2245 Using 32kB page size will result in higher performance kernel at 2246 the price of higher memory consumption. This option is available 2247 only on cnMIPS cores. Note that you will need a suitable Linux 2248 distribution to support this. 2249 2250config PAGE_SIZE_64KB 2251 bool "64kB" 2252 depends on !CPU_R3000 && !CPU_TX39XX 2253 help 2254 Using 64kB page size will result in higher performance kernel at 2255 the price of higher memory consumption. This option is available on 2256 all non-R3000 family processor. Not that at the time of this 2257 writing this option is still high experimental. 2258 2259endchoice 2260 2261config FORCE_MAX_ZONEORDER 2262 int "Maximum zone order" 2263 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2264 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB 2265 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2266 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB 2267 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2268 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB 2269 range 0 64 2270 default "11" 2271 help 2272 The kernel memory allocator divides physically contiguous memory 2273 blocks into "zones", where each zone is a power of two number of 2274 pages. This option selects the largest power of two that the kernel 2275 keeps in the memory allocator. If you need to allocate very large 2276 blocks of physically contiguous memory, then you may need to 2277 increase this value. 2278 2279 This config option is actually maximum order plus one. For example, 2280 a value of 11 means that the largest free memory block is 2^10 pages. 2281 2282 The page size is not necessarily 4KB. Keep this in mind 2283 when choosing a value for this option. 2284 2285config BOARD_SCACHE 2286 bool 2287 2288config IP22_CPU_SCACHE 2289 bool 2290 select BOARD_SCACHE 2291 2292# 2293# Support for a MIPS32 / MIPS64 style S-caches 2294# 2295config MIPS_CPU_SCACHE 2296 bool 2297 select BOARD_SCACHE 2298 2299config R5000_CPU_SCACHE 2300 bool 2301 select BOARD_SCACHE 2302 2303config RM7000_CPU_SCACHE 2304 bool 2305 select BOARD_SCACHE 2306 2307config SIBYTE_DMA_PAGEOPS 2308 bool "Use DMA to clear/copy pages" 2309 depends on CPU_SB1 2310 help 2311 Instead of using the CPU to zero and copy pages, use a Data Mover 2312 channel. These DMA channels are otherwise unused by the standard 2313 SiByte Linux port. Seems to give a small performance benefit. 2314 2315config CPU_HAS_PREFETCH 2316 bool 2317 2318config CPU_GENERIC_DUMP_TLB 2319 bool 2320 default y if !(CPU_R3000 || CPU_TX39XX) 2321 2322config MIPS_FP_SUPPORT 2323 bool "Floating Point support" if EXPERT 2324 default y 2325 help 2326 Select y to include support for floating point in the kernel 2327 including initialization of FPU hardware, FP context save & restore 2328 and emulation of an FPU where necessary. Without this support any 2329 userland program attempting to use floating point instructions will 2330 receive a SIGILL. 2331 2332 If you know that your userland will not attempt to use floating point 2333 instructions then you can say n here to shrink the kernel a little. 2334 2335 If unsure, say y. 2336 2337config CPU_R2300_FPU 2338 bool 2339 depends on MIPS_FP_SUPPORT 2340 default y if CPU_R3000 || CPU_TX39XX 2341 2342config CPU_R3K_TLB 2343 bool 2344 2345config CPU_R4K_FPU 2346 bool 2347 depends on MIPS_FP_SUPPORT 2348 default y if !CPU_R2300_FPU 2349 2350config CPU_R4K_CACHE_TLB 2351 bool 2352 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON) 2353 2354config MIPS_MT_SMP 2355 bool "MIPS MT SMP support (1 TC on each available VPE)" 2356 default y 2357 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS 2358 select CPU_MIPSR2_IRQ_VI 2359 select CPU_MIPSR2_IRQ_EI 2360 select SYNC_R4K 2361 select MIPS_MT 2362 select SMP 2363 select SMP_UP 2364 select SYS_SUPPORTS_SMP 2365 select SYS_SUPPORTS_SCHED_SMT 2366 select MIPS_PERF_SHARED_TC_COUNTERS 2367 help 2368 This is a kernel model which is known as SMVP. This is supported 2369 on cores with the MT ASE and uses the available VPEs to implement 2370 virtual processors which supports SMP. This is equivalent to the 2371 Intel Hyperthreading feature. For further information go to 2372 <http://www.imgtec.com/mips/mips-multithreading.asp>. 2373 2374config MIPS_MT 2375 bool 2376 2377config SCHED_SMT 2378 bool "SMT (multithreading) scheduler support" 2379 depends on SYS_SUPPORTS_SCHED_SMT 2380 default n 2381 help 2382 SMT scheduler support improves the CPU scheduler's decision making 2383 when dealing with MIPS MT enabled cores at a cost of slightly 2384 increased overhead in some places. If unsure say N here. 2385 2386config SYS_SUPPORTS_SCHED_SMT 2387 bool 2388 2389config SYS_SUPPORTS_MULTITHREADING 2390 bool 2391 2392config MIPS_MT_FPAFF 2393 bool "Dynamic FPU affinity for FP-intensive threads" 2394 default y 2395 depends on MIPS_MT_SMP 2396 2397config MIPSR2_TO_R6_EMULATOR 2398 bool "MIPS R2-to-R6 emulator" 2399 depends on CPU_MIPSR6 2400 depends on MIPS_FP_SUPPORT 2401 default y 2402 help 2403 Choose this option if you want to run non-R6 MIPS userland code. 2404 Even if you say 'Y' here, the emulator will still be disabled by 2405 default. You can enable it using the 'mipsr2emu' kernel option. 2406 The only reason this is a build-time option is to save ~14K from the 2407 final kernel image. 2408 2409config SYS_SUPPORTS_VPE_LOADER 2410 bool 2411 depends on SYS_SUPPORTS_MULTITHREADING 2412 help 2413 Indicates that the platform supports the VPE loader, and provides 2414 physical_memsize. 2415 2416config MIPS_VPE_LOADER 2417 bool "VPE loader support." 2418 depends on SYS_SUPPORTS_VPE_LOADER && MODULES 2419 select CPU_MIPSR2_IRQ_VI 2420 select CPU_MIPSR2_IRQ_EI 2421 select MIPS_MT 2422 help 2423 Includes a loader for loading an elf relocatable object 2424 onto another VPE and running it. 2425 2426config MIPS_VPE_LOADER_CMP 2427 bool 2428 default "y" 2429 depends on MIPS_VPE_LOADER && MIPS_CMP 2430 2431config MIPS_VPE_LOADER_MT 2432 bool 2433 default "y" 2434 depends on MIPS_VPE_LOADER && !MIPS_CMP 2435 2436config MIPS_VPE_LOADER_TOM 2437 bool "Load VPE program into memory hidden from linux" 2438 depends on MIPS_VPE_LOADER 2439 default y 2440 help 2441 The loader can use memory that is present but has been hidden from 2442 Linux using the kernel command line option "mem=xxMB". It's up to 2443 you to ensure the amount you put in the option and the space your 2444 program requires is less or equal to the amount physically present. 2445 2446config MIPS_VPE_APSP_API 2447 bool "Enable support for AP/SP API (RTLX)" 2448 depends on MIPS_VPE_LOADER 2449 2450config MIPS_VPE_APSP_API_CMP 2451 bool 2452 default "y" 2453 depends on MIPS_VPE_APSP_API && MIPS_CMP 2454 2455config MIPS_VPE_APSP_API_MT 2456 bool 2457 default "y" 2458 depends on MIPS_VPE_APSP_API && !MIPS_CMP 2459 2460config MIPS_CMP 2461 bool "MIPS CMP framework support (DEPRECATED)" 2462 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6 2463 select SMP 2464 select SYNC_R4K 2465 select SYS_SUPPORTS_SMP 2466 select WEAK_ORDERING 2467 default n 2468 help 2469 Select this if you are using a bootloader which implements the "CMP 2470 framework" protocol (ie. YAMON) and want your kernel to make use of 2471 its ability to start secondary CPUs. 2472 2473 Unless you have a specific need, you should use CONFIG_MIPS_CPS 2474 instead of this. 2475 2476config MIPS_CPS 2477 bool "MIPS Coherent Processing System support" 2478 depends on SYS_SUPPORTS_MIPS_CPS 2479 select MIPS_CM 2480 select MIPS_CPS_PM if HOTPLUG_CPU 2481 select SMP 2482 select SYNC_R4K if (CEVT_R4K || CSRC_R4K) 2483 select SYS_SUPPORTS_HOTPLUG_CPU 2484 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6 2485 select SYS_SUPPORTS_SMP 2486 select WEAK_ORDERING 2487 help 2488 Select this if you wish to run an SMP kernel across multiple cores 2489 within a MIPS Coherent Processing System. When this option is 2490 enabled the kernel will probe for other cores and boot them with 2491 no external assistance. It is safe to enable this when hardware 2492 support is unavailable. 2493 2494config MIPS_CPS_PM 2495 depends on MIPS_CPS 2496 bool 2497 2498config MIPS_CM 2499 bool 2500 select MIPS_CPC 2501 2502config MIPS_CPC 2503 bool 2504 2505config SB1_PASS_2_WORKAROUNDS 2506 bool 2507 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2) 2508 default y 2509 2510config SB1_PASS_2_1_WORKAROUNDS 2511 bool 2512 depends on CPU_SB1 && CPU_SB1_PASS_2 2513 default y 2514 2515choice 2516 prompt "SmartMIPS or microMIPS ASE support" 2517 2518config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS 2519 bool "None" 2520 help 2521 Select this if you want neither microMIPS nor SmartMIPS support 2522 2523config CPU_HAS_SMARTMIPS 2524 depends on SYS_SUPPORTS_SMARTMIPS 2525 bool "SmartMIPS" 2526 help 2527 SmartMIPS is a extension of the MIPS32 architecture aimed at 2528 increased security at both hardware and software level for 2529 smartcards. Enabling this option will allow proper use of the 2530 SmartMIPS instructions by Linux applications. However a kernel with 2531 this option will not work on a MIPS core without SmartMIPS core. If 2532 you don't know you probably don't have SmartMIPS and should say N 2533 here. 2534 2535config CPU_MICROMIPS 2536 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6 2537 bool "microMIPS" 2538 help 2539 When this option is enabled the kernel will be built using the 2540 microMIPS ISA 2541 2542endchoice 2543 2544config CPU_HAS_MSA 2545 bool "Support for the MIPS SIMD Architecture" 2546 depends on CPU_SUPPORTS_MSA 2547 depends on MIPS_FP_SUPPORT 2548 depends on 64BIT || MIPS_O32_FP64_SUPPORT 2549 help 2550 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers 2551 and a set of SIMD instructions to operate on them. When this option 2552 is enabled the kernel will support allocating & switching MSA 2553 vector register contexts. If you know that your kernel will only be 2554 running on CPUs which do not support MSA or that your userland will 2555 not be making use of it then you may wish to say N here to reduce 2556 the size & complexity of your kernel. 2557 2558 If unsure, say Y. 2559 2560config CPU_HAS_WB 2561 bool 2562 2563config XKS01 2564 bool 2565 2566config CPU_HAS_DIEI 2567 depends on !CPU_DIEI_BROKEN 2568 bool 2569 2570config CPU_DIEI_BROKEN 2571 bool 2572 2573config CPU_HAS_RIXI 2574 bool 2575 2576config CPU_NO_LOAD_STORE_LR 2577 bool 2578 help 2579 CPU lacks support for unaligned load and store instructions: 2580 LWL, LWR, SWL, SWR (Load/store word left/right). 2581 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit 2582 systems). 2583 2584# 2585# Vectored interrupt mode is an R2 feature 2586# 2587config CPU_MIPSR2_IRQ_VI 2588 bool 2589 2590# 2591# Extended interrupt mode is an R2 feature 2592# 2593config CPU_MIPSR2_IRQ_EI 2594 bool 2595 2596config CPU_HAS_SYNC 2597 bool 2598 depends on !CPU_R3000 2599 default y 2600 2601# 2602# CPU non-features 2603# 2604config CPU_DADDI_WORKAROUNDS 2605 bool 2606 2607config CPU_R4000_WORKAROUNDS 2608 bool 2609 select CPU_R4400_WORKAROUNDS 2610 2611config CPU_R4400_WORKAROUNDS 2612 bool 2613 2614config CPU_R4X00_BUGS64 2615 bool 2616 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1) 2617 2618config MIPS_ASID_SHIFT 2619 int 2620 default 6 if CPU_R3000 || CPU_TX39XX 2621 default 0 2622 2623config MIPS_ASID_BITS 2624 int 2625 default 0 if MIPS_ASID_BITS_VARIABLE 2626 default 6 if CPU_R3000 || CPU_TX39XX 2627 default 8 2628 2629config MIPS_ASID_BITS_VARIABLE 2630 bool 2631 2632config MIPS_CRC_SUPPORT 2633 bool 2634 2635# R4600 erratum. Due to the lack of errata information the exact 2636# technical details aren't known. I've experimentally found that disabling 2637# interrupts during indexed I-cache flushes seems to be sufficient to deal 2638# with the issue. 2639config WAR_R4600_V1_INDEX_ICACHEOP 2640 bool 2641 2642# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata: 2643# 2644# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D, 2645# Hit_Invalidate_D and Create_Dirty_Excl_D should only be 2646# executed if there is no other dcache activity. If the dcache is 2647# accessed for another instruction immeidately preceding when these 2648# cache instructions are executing, it is possible that the dcache 2649# tag match outputs used by these cache instructions will be 2650# incorrect. These cache instructions should be preceded by at least 2651# four instructions that are not any kind of load or store 2652# instruction. 2653# 2654# This is not allowed: lw 2655# nop 2656# nop 2657# nop 2658# cache Hit_Writeback_Invalidate_D 2659# 2660# This is allowed: lw 2661# nop 2662# nop 2663# nop 2664# nop 2665# cache Hit_Writeback_Invalidate_D 2666config WAR_R4600_V1_HIT_CACHEOP 2667 bool 2668 2669# Writeback and invalidate the primary cache dcache before DMA. 2670# 2671# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D, 2672# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only 2673# operate correctly if the internal data cache refill buffer is empty. These 2674# CACHE instructions should be separated from any potential data cache miss 2675# by a load instruction to an uncached address to empty the response buffer." 2676# (Revision 2.0 device errata from IDT available on https://www.idt.com/ 2677# in .pdf format.) 2678config WAR_R4600_V2_HIT_CACHEOP 2679 bool 2680 2681# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for 2682# the line which this instruction itself exists, the following 2683# operation is not guaranteed." 2684# 2685# Workaround: do two phase flushing for Index_Invalidate_I 2686config WAR_TX49XX_ICACHE_INDEX_INV 2687 bool 2688 2689# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra 2690# opposes it being called that) where invalid instructions in the same 2691# I-cache line worth of instructions being fetched may case spurious 2692# exceptions. 2693config WAR_ICACHE_REFILLS 2694 bool 2695 2696# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that 2697# may cause ll / sc and lld / scd sequences to execute non-atomically. 2698config WAR_R10000_LLSC 2699 bool 2700 2701# 34K core erratum: "Problems Executing the TLBR Instruction" 2702config WAR_MIPS34K_MISSED_ITLB 2703 bool 2704 2705# 2706# - Highmem only makes sense for the 32-bit kernel. 2707# - The current highmem code will only work properly on physically indexed 2708# caches such as R3000, SB1, R7000 or those that look like they're virtually 2709# indexed such as R4000/R4400 SC and MC versions or R10000. So for the 2710# moment we protect the user and offer the highmem option only on machines 2711# where it's known to be safe. This will not offer highmem on a few systems 2712# such as MIPS32 and MIPS64 CPUs which may have virtual and physically 2713# indexed CPUs but we're playing safe. 2714# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we 2715# know they might have memory configurations that could make use of highmem 2716# support. 2717# 2718config HIGHMEM 2719 bool "High Memory Support" 2720 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA 2721 2722config CPU_SUPPORTS_HIGHMEM 2723 bool 2724 2725config SYS_SUPPORTS_HIGHMEM 2726 bool 2727 2728config SYS_SUPPORTS_SMARTMIPS 2729 bool 2730 2731config SYS_SUPPORTS_MICROMIPS 2732 bool 2733 2734config SYS_SUPPORTS_MIPS16 2735 bool 2736 help 2737 This option must be set if a kernel might be executed on a MIPS16- 2738 enabled CPU even if MIPS16 is not actually being used. In other 2739 words, it makes the kernel MIPS16-tolerant. 2740 2741config CPU_SUPPORTS_MSA 2742 bool 2743 2744config ARCH_FLATMEM_ENABLE 2745 def_bool y 2746 depends on !NUMA && !CPU_LOONGSON2EF 2747 2748config ARCH_SPARSEMEM_ENABLE 2749 bool 2750 select SPARSEMEM_STATIC if !SGI_IP27 2751 2752config NUMA 2753 bool "NUMA Support" 2754 depends on SYS_SUPPORTS_NUMA 2755 help 2756 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 2757 Access). This option improves performance on systems with more 2758 than two nodes; on two node systems it is generally better to 2759 leave it disabled; on single node systems leave this option 2760 disabled. 2761 2762config SYS_SUPPORTS_NUMA 2763 bool 2764 2765config HAVE_SETUP_PER_CPU_AREA 2766 def_bool y 2767 depends on NUMA 2768 2769config NEED_PER_CPU_EMBED_FIRST_CHUNK 2770 def_bool y 2771 depends on NUMA 2772 2773config RELOCATABLE 2774 bool "Relocatable kernel" 2775 depends on SYS_SUPPORTS_RELOCATABLE 2776 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \ 2777 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \ 2778 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \ 2779 CPU_P5600 || CAVIUM_OCTEON_SOC 2780 help 2781 This builds a kernel image that retains relocation information 2782 so it can be loaded someplace besides the default 1MB. 2783 The relocations make the kernel binary about 15% larger, 2784 but are discarded at runtime 2785 2786config RELOCATION_TABLE_SIZE 2787 hex "Relocation table size" 2788 depends on RELOCATABLE 2789 range 0x0 0x01000000 2790 default "0x00100000" 2791 help 2792 A table of relocation data will be appended to the kernel binary 2793 and parsed at boot to fix up the relocated kernel. 2794 2795 This option allows the amount of space reserved for the table to be 2796 adjusted, although the default of 1Mb should be ok in most cases. 2797 2798 The build will fail and a valid size suggested if this is too small. 2799 2800 If unsure, leave at the default value. 2801 2802config RANDOMIZE_BASE 2803 bool "Randomize the address of the kernel image" 2804 depends on RELOCATABLE 2805 help 2806 Randomizes the physical and virtual address at which the 2807 kernel image is loaded, as a security feature that 2808 deters exploit attempts relying on knowledge of the location 2809 of kernel internals. 2810 2811 Entropy is generated using any coprocessor 0 registers available. 2812 2813 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET. 2814 2815 If unsure, say N. 2816 2817config RANDOMIZE_BASE_MAX_OFFSET 2818 hex "Maximum kASLR offset" if EXPERT 2819 depends on RANDOMIZE_BASE 2820 range 0x0 0x40000000 if EVA || 64BIT 2821 range 0x0 0x08000000 2822 default "0x01000000" 2823 help 2824 When kASLR is active, this provides the maximum offset that will 2825 be applied to the kernel image. It should be set according to the 2826 amount of physical RAM available in the target system minus 2827 PHYSICAL_START and must be a power of 2. 2828 2829 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with 2830 EVA or 64-bit. The default is 16Mb. 2831 2832config NODES_SHIFT 2833 int 2834 default "6" 2835 depends on NEED_MULTIPLE_NODES 2836 2837config HW_PERF_EVENTS 2838 bool "Enable hardware performance counter support for perf events" 2839 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64) 2840 default y 2841 help 2842 Enable hardware performance counter support for perf events. If 2843 disabled, perf events will use software events only. 2844 2845config DMI 2846 bool "Enable DMI scanning" 2847 depends on MACH_LOONGSON64 2848 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK 2849 default y 2850 help 2851 Enabled scanning of DMI to identify machine quirks. Say Y 2852 here unless you have verified that your setup is not 2853 affected by entries in the DMI blacklist. Required by PNP 2854 BIOS code. 2855 2856config SMP 2857 bool "Multi-Processing support" 2858 depends on SYS_SUPPORTS_SMP 2859 help 2860 This enables support for systems with more than one CPU. If you have 2861 a system with only one CPU, say N. If you have a system with more 2862 than one CPU, say Y. 2863 2864 If you say N here, the kernel will run on uni- and multiprocessor 2865 machines, but will use only one CPU of a multiprocessor machine. If 2866 you say Y here, the kernel will run on many, but not all, 2867 uniprocessor machines. On a uniprocessor machine, the kernel 2868 will run faster if you say N here. 2869 2870 People using multiprocessor machines who say Y here should also say 2871 Y to "Enhanced Real Time Clock Support", below. 2872 2873 See also the SMP-HOWTO available at 2874 <https://www.tldp.org/docs.html#howto>. 2875 2876 If you don't know what to do here, say N. 2877 2878config HOTPLUG_CPU 2879 bool "Support for hot-pluggable CPUs" 2880 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU 2881 help 2882 Say Y here to allow turning CPUs off and on. CPUs can be 2883 controlled through /sys/devices/system/cpu. 2884 (Note: power management support will enable this option 2885 automatically on SMP systems. ) 2886 Say N if you want to disable CPU hotplug. 2887 2888config SMP_UP 2889 bool 2890 2891config SYS_SUPPORTS_MIPS_CMP 2892 bool 2893 2894config SYS_SUPPORTS_MIPS_CPS 2895 bool 2896 2897config SYS_SUPPORTS_SMP 2898 bool 2899 2900config NR_CPUS_DEFAULT_4 2901 bool 2902 2903config NR_CPUS_DEFAULT_8 2904 bool 2905 2906config NR_CPUS_DEFAULT_16 2907 bool 2908 2909config NR_CPUS_DEFAULT_32 2910 bool 2911 2912config NR_CPUS_DEFAULT_64 2913 bool 2914 2915config NR_CPUS 2916 int "Maximum number of CPUs (2-256)" 2917 range 2 256 2918 depends on SMP 2919 default "4" if NR_CPUS_DEFAULT_4 2920 default "8" if NR_CPUS_DEFAULT_8 2921 default "16" if NR_CPUS_DEFAULT_16 2922 default "32" if NR_CPUS_DEFAULT_32 2923 default "64" if NR_CPUS_DEFAULT_64 2924 help 2925 This allows you to specify the maximum number of CPUs which this 2926 kernel will support. The maximum supported value is 32 for 32-bit 2927 kernel and 64 for 64-bit kernels; the minimum value which makes 2928 sense is 1 for Qemu (useful only for kernel debugging purposes) 2929 and 2 for all others. 2930 2931 This is purely to save memory - each supported CPU adds 2932 approximately eight kilobytes to the kernel image. For best 2933 performance should round up your number of processors to the next 2934 power of two. 2935 2936config MIPS_PERF_SHARED_TC_COUNTERS 2937 bool 2938 2939config MIPS_NR_CPU_NR_MAP_1024 2940 bool 2941 2942config MIPS_NR_CPU_NR_MAP 2943 int 2944 depends on SMP 2945 default 1024 if MIPS_NR_CPU_NR_MAP_1024 2946 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024 2947 2948# 2949# Timer Interrupt Frequency Configuration 2950# 2951 2952choice 2953 prompt "Timer frequency" 2954 default HZ_250 2955 help 2956 Allows the configuration of the timer frequency. 2957 2958 config HZ_24 2959 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ 2960 2961 config HZ_48 2962 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ 2963 2964 config HZ_100 2965 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ 2966 2967 config HZ_128 2968 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ 2969 2970 config HZ_250 2971 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ 2972 2973 config HZ_256 2974 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ 2975 2976 config HZ_1000 2977 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ 2978 2979 config HZ_1024 2980 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ 2981 2982endchoice 2983 2984config SYS_SUPPORTS_24HZ 2985 bool 2986 2987config SYS_SUPPORTS_48HZ 2988 bool 2989 2990config SYS_SUPPORTS_100HZ 2991 bool 2992 2993config SYS_SUPPORTS_128HZ 2994 bool 2995 2996config SYS_SUPPORTS_250HZ 2997 bool 2998 2999config SYS_SUPPORTS_256HZ 3000 bool 3001 3002config SYS_SUPPORTS_1000HZ 3003 bool 3004 3005config SYS_SUPPORTS_1024HZ 3006 bool 3007 3008config SYS_SUPPORTS_ARBIT_HZ 3009 bool 3010 default y if !SYS_SUPPORTS_24HZ && \ 3011 !SYS_SUPPORTS_48HZ && \ 3012 !SYS_SUPPORTS_100HZ && \ 3013 !SYS_SUPPORTS_128HZ && \ 3014 !SYS_SUPPORTS_250HZ && \ 3015 !SYS_SUPPORTS_256HZ && \ 3016 !SYS_SUPPORTS_1000HZ && \ 3017 !SYS_SUPPORTS_1024HZ 3018 3019config HZ 3020 int 3021 default 24 if HZ_24 3022 default 48 if HZ_48 3023 default 100 if HZ_100 3024 default 128 if HZ_128 3025 default 250 if HZ_250 3026 default 256 if HZ_256 3027 default 1000 if HZ_1000 3028 default 1024 if HZ_1024 3029 3030config SCHED_HRTICK 3031 def_bool HIGH_RES_TIMERS 3032 3033config KEXEC 3034 bool "Kexec system call" 3035 select KEXEC_CORE 3036 help 3037 kexec is a system call that implements the ability to shutdown your 3038 current kernel, and to start another kernel. It is like a reboot 3039 but it is independent of the system firmware. And like a reboot 3040 you can start any kernel with it, not just Linux. 3041 3042 The name comes from the similarity to the exec system call. 3043 3044 It is an ongoing process to be certain the hardware in a machine 3045 is properly shutdown, so do not be surprised if this code does not 3046 initially work for you. As of this writing the exact hardware 3047 interface is strongly in flux, so no good recommendation can be 3048 made. 3049 3050config CRASH_DUMP 3051 bool "Kernel crash dumps" 3052 help 3053 Generate crash dump after being started by kexec. 3054 This should be normally only set in special crash dump kernels 3055 which are loaded in the main kernel with kexec-tools into 3056 a specially reserved region and then later executed after 3057 a crash by kdump/kexec. The crash dump kernel must be compiled 3058 to a memory address not used by the main kernel or firmware using 3059 PHYSICAL_START. 3060 3061config PHYSICAL_START 3062 hex "Physical address where the kernel is loaded" 3063 default "0xffffffff84000000" 3064 depends on CRASH_DUMP 3065 help 3066 This gives the CKSEG0 or KSEG0 address where the kernel is loaded. 3067 If you plan to use kernel for capturing the crash dump change 3068 this value to start of the reserved region (the "X" value as 3069 specified in the "crashkernel=YM@XM" command line boot parameter 3070 passed to the panic-ed kernel). 3071 3072config MIPS_O32_FP64_SUPPORT 3073 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6 3074 depends on 32BIT || MIPS32_O32 3075 help 3076 When this is enabled, the kernel will support use of 64-bit floating 3077 point registers with binaries using the O32 ABI along with the 3078 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On 3079 32-bit MIPS systems this support is at the cost of increasing the 3080 size and complexity of the compiled FPU emulator. Thus if you are 3081 running a MIPS32 system and know that none of your userland binaries 3082 will require 64-bit floating point, you may wish to reduce the size 3083 of your kernel & potentially improve FP emulation performance by 3084 saying N here. 3085 3086 Although binutils currently supports use of this flag the details 3087 concerning its effect upon the O32 ABI in userland are still being 3088 worked on. In order to avoid userland becoming dependant upon current 3089 behaviour before the details have been finalised, this option should 3090 be considered experimental and only enabled by those working upon 3091 said details. 3092 3093 If unsure, say N. 3094 3095config USE_OF 3096 bool 3097 select OF 3098 select OF_EARLY_FLATTREE 3099 select IRQ_DOMAIN 3100 3101config UHI_BOOT 3102 bool 3103 3104config BUILTIN_DTB 3105 bool 3106 3107choice 3108 prompt "Kernel appended dtb support" if USE_OF 3109 default MIPS_NO_APPENDED_DTB 3110 3111 config MIPS_NO_APPENDED_DTB 3112 bool "None" 3113 help 3114 Do not enable appended dtb support. 3115 3116 config MIPS_ELF_APPENDED_DTB 3117 bool "vmlinux" 3118 help 3119 With this option, the boot code will look for a device tree binary 3120 DTB) included in the vmlinux ELF section .appended_dtb. By default 3121 it is empty and the DTB can be appended using binutils command 3122 objcopy: 3123 3124 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux 3125 3126 This is meant as a backward compatiblity convenience for those 3127 systems with a bootloader that can't be upgraded to accommodate 3128 the documented boot protocol using a device tree. 3129 3130 config MIPS_RAW_APPENDED_DTB 3131 bool "vmlinux.bin or vmlinuz.bin" 3132 help 3133 With this option, the boot code will look for a device tree binary 3134 DTB) appended to raw vmlinux.bin or vmlinuz.bin. 3135 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb). 3136 3137 This is meant as a backward compatibility convenience for those 3138 systems with a bootloader that can't be upgraded to accommodate 3139 the documented boot protocol using a device tree. 3140 3141 Beware that there is very little in terms of protection against 3142 this option being confused by leftover garbage in memory that might 3143 look like a DTB header after a reboot if no actual DTB is appended 3144 to vmlinux.bin. Do not leave this option active in a production kernel 3145 if you don't intend to always append a DTB. 3146endchoice 3147 3148choice 3149 prompt "Kernel command line type" if !CMDLINE_OVERRIDE 3150 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \ 3151 !MACH_LOONGSON64 && !MIPS_MALTA && \ 3152 !CAVIUM_OCTEON_SOC 3153 default MIPS_CMDLINE_FROM_BOOTLOADER 3154 3155 config MIPS_CMDLINE_FROM_DTB 3156 depends on USE_OF 3157 bool "Dtb kernel arguments if available" 3158 3159 config MIPS_CMDLINE_DTB_EXTEND 3160 depends on USE_OF 3161 bool "Extend dtb kernel arguments with bootloader arguments" 3162 3163 config MIPS_CMDLINE_FROM_BOOTLOADER 3164 bool "Bootloader kernel arguments if available" 3165 3166 config MIPS_CMDLINE_BUILTIN_EXTEND 3167 depends on CMDLINE_BOOL 3168 bool "Extend builtin kernel arguments with bootloader arguments" 3169endchoice 3170 3171endmenu 3172 3173config LOCKDEP_SUPPORT 3174 bool 3175 default y 3176 3177config STACKTRACE_SUPPORT 3178 bool 3179 default y 3180 3181config PGTABLE_LEVELS 3182 int 3183 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48 3184 default 3 if 64BIT && !PAGE_SIZE_64KB 3185 default 2 3186 3187config MIPS_AUTO_PFN_OFFSET 3188 bool 3189 3190menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)" 3191 3192config PCI_DRIVERS_GENERIC 3193 select PCI_DOMAINS_GENERIC if PCI 3194 bool 3195 3196config PCI_DRIVERS_LEGACY 3197 def_bool !PCI_DRIVERS_GENERIC 3198 select NO_GENERIC_PCI_IOPORT_MAP 3199 select PCI_DOMAINS if PCI 3200 3201# 3202# ISA support is now enabled via select. Too many systems still have the one 3203# or other ISA chip on the board that users don't know about so don't expect 3204# users to choose the right thing ... 3205# 3206config ISA 3207 bool 3208 3209config TC 3210 bool "TURBOchannel support" 3211 depends on MACH_DECSTATION 3212 help 3213 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS 3214 processors. TURBOchannel programming specifications are available 3215 at: 3216 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/> 3217 and: 3218 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/> 3219 Linux driver support status is documented at: 3220 <http://www.linux-mips.org/wiki/DECstation> 3221 3222config MMU 3223 bool 3224 default y 3225 3226config ARCH_MMAP_RND_BITS_MIN 3227 default 12 if 64BIT 3228 default 8 3229 3230config ARCH_MMAP_RND_BITS_MAX 3231 default 18 if 64BIT 3232 default 15 3233 3234config ARCH_MMAP_RND_COMPAT_BITS_MIN 3235 default 8 3236 3237config ARCH_MMAP_RND_COMPAT_BITS_MAX 3238 default 15 3239 3240config I8253 3241 bool 3242 select CLKSRC_I8253 3243 select CLKEVT_I8253 3244 select MIPS_EXTERNAL_TIMER 3245 3246config ZONE_DMA 3247 bool 3248 3249config ZONE_DMA32 3250 bool 3251 3252endmenu 3253 3254config TRAD_SIGNALS 3255 bool 3256 3257config MIPS32_COMPAT 3258 bool 3259 3260config COMPAT 3261 bool 3262 3263config SYSVIPC_COMPAT 3264 bool 3265 3266config MIPS32_O32 3267 bool "Kernel support for o32 binaries" 3268 depends on 64BIT 3269 select ARCH_WANT_OLD_COMPAT_IPC 3270 select COMPAT 3271 select MIPS32_COMPAT 3272 select SYSVIPC_COMPAT if SYSVIPC 3273 help 3274 Select this option if you want to run o32 binaries. These are pure 3275 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of 3276 existing binaries are in this format. 3277 3278 If unsure, say Y. 3279 3280config MIPS32_N32 3281 bool "Kernel support for n32 binaries" 3282 depends on 64BIT 3283 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION 3284 select COMPAT 3285 select MIPS32_COMPAT 3286 select SYSVIPC_COMPAT if SYSVIPC 3287 help 3288 Select this option if you want to run n32 binaries. These are 3289 64-bit binaries using 32-bit quantities for addressing and certain 3290 data that would normally be 64-bit. They are used in special 3291 cases. 3292 3293 If unsure, say N. 3294 3295config BINFMT_ELF32 3296 bool 3297 default y if MIPS32_O32 || MIPS32_N32 3298 select ELFCORE 3299 3300menu "Power management options" 3301 3302config ARCH_HIBERNATION_POSSIBLE 3303 def_bool y 3304 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3305 3306config ARCH_SUSPEND_POSSIBLE 3307 def_bool y 3308 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP 3309 3310source "kernel/power/Kconfig" 3311 3312endmenu 3313 3314config MIPS_EXTERNAL_TIMER 3315 bool 3316 3317menu "CPU Power Management" 3318 3319if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER 3320source "drivers/cpufreq/Kconfig" 3321endif 3322 3323source "drivers/cpuidle/Kconfig" 3324 3325endmenu 3326 3327source "drivers/firmware/Kconfig" 3328 3329source "arch/mips/kvm/Kconfig" 3330 3331source "arch/mips/vdso/Kconfig" 3332