1# SPDX-License-Identifier: GPL-2.0-only 2config 64BIT 3 bool "64-bit kernel" if "$(ARCH)" = "sparc" 4 default "$(ARCH)" = "sparc64" 5 help 6 SPARC is a family of RISC microprocessors designed and marketed by 7 Sun Microsystems, incorporated. They are very widely found in Sun 8 workstations and clones. 9 10 Say yes to build a 64-bit kernel - formerly known as sparc64 11 Say no to build a 32-bit kernel - formerly known as sparc 12 13config SPARC 14 bool 15 default y 16 select ARCH_HAS_CPU_CACHE_ALIASING 17 select ARCH_HAS_DMA_OPS 18 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 19 select ARCH_MIGHT_HAVE_PC_SERIO 20 select OF 21 select OF_PROMTREE 22 select HAVE_ASM_MODVERSIONS 23 select HAVE_ARCH_KGDB if !SMP || SPARC64 24 select HAVE_ARCH_TRACEHOOK 25 select HAVE_ARCH_SECCOMP if SPARC64 26 select HAVE_EXIT_THREAD 27 select HAVE_PCI 28 select SYSCTL_EXCEPTION_TRACE 29 select RTC_CLASS 30 select RTC_DRV_M48T59 31 select RTC_SYSTOHC 32 select HAVE_ARCH_JUMP_LABEL if SPARC64 33 select GENERIC_IRQ_SHOW 34 select ARCH_WANT_IPC_PARSE_VERSION 35 select GENERIC_PCI_IOMAP 36 select HAS_IOPORT 37 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64 38 select HAVE_CBPF_JIT if SPARC32 39 select HAVE_EBPF_JIT if SPARC64 40 select HAVE_DEBUG_BUGVERBOSE 41 select GENERIC_SMP_IDLE_THREAD 42 select MODULES_USE_ELF_RELA 43 select PCI_SYSCALL if PCI 44 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 45 select ODD_RT_SIGACTION 46 select OLD_SIGSUSPEND 47 select CPU_NO_EFFICIENT_FFS 48 select LOCKDEP_SMALL if LOCKDEP 49 select NEED_DMA_MAP_STATE 50 select NEED_SG_DMA_LENGTH 51 select TRACE_IRQFLAGS_SUPPORT 52 53config SPARC32 54 def_bool !64BIT 55 select ARCH_32BIT_OFF_T 56 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP 57 select ARCH_HAS_SYNC_DMA_FOR_CPU 58 select CLZ_TAB 59 select DMA_DIRECT_REMAP 60 select GENERIC_ATOMIC64 61 select GENERIC_LIB_CMPDI2 62 select GENERIC_LIB_UCMPDI2 63 select HAVE_UID16 64 select HAVE_PAGE_SIZE_4KB 65 select LOCK_MM_AND_FIND_VMA 66 select OLD_SIGACTION 67 select ZONE_DMA 68 69config SPARC64 70 def_bool 64BIT 71 select ALTERNATE_USER_ADDRESS_SPACE 72 select HAVE_FUNCTION_TRACER 73 select HAVE_FUNCTION_GRAPH_TRACER 74 select HAVE_KRETPROBES 75 select HAVE_KPROBES 76 select MMU_GATHER_RCU_TABLE_FREE if SMP 77 select MMU_GATHER_MERGE_VMAS 78 select MMU_GATHER_NO_FLUSH_CACHE 79 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 80 select HAVE_DYNAMIC_FTRACE 81 select HAVE_FTRACE_MCOUNT_RECORD 82 select HAVE_PAGE_SIZE_8KB 83 select HAVE_SYSCALL_TRACEPOINTS 84 select HAVE_CONTEXT_TRACKING_USER 85 select HAVE_TIF_NOHZ 86 select HAVE_DEBUG_KMEMLEAK 87 select IOMMU_HELPER 88 select SPARSE_IRQ 89 select RTC_DRV_CMOS 90 select RTC_DRV_BQ4802 91 select RTC_DRV_SUN4V 92 select RTC_DRV_STARFIRE 93 select HAVE_PERF_EVENTS 94 select PERF_USE_VMALLOC 95 select ARCH_HAVE_NMI_SAFE_CMPXCHG 96 select HAVE_C_RECORDMCOUNT 97 select HAVE_ARCH_AUDITSYSCALL 98 select ARCH_SUPPORTS_ATOMIC_RMW 99 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 100 select HAVE_NMI 101 select HAVE_REGS_AND_STACK_ACCESS_API 102 select ARCH_USE_QUEUED_RWLOCKS 103 select ARCH_USE_QUEUED_SPINLOCKS 104 select GENERIC_TIME_VSYSCALL 105 select ARCH_CLOCKSOURCE_DATA 106 select ARCH_HAS_PTE_SPECIAL 107 select PCI_DOMAINS if PCI 108 select ARCH_HAS_GIGANTIC_PAGE 109 select HAVE_SOFTIRQ_ON_OWN_STACK 110 select HAVE_SETUP_PER_CPU_AREA 111 select NEED_PER_CPU_EMBED_FIRST_CHUNK 112 select NEED_PER_CPU_PAGE_FIRST_CHUNK 113 select ARCH_HAS_CRC32 114 115config ARCH_PROC_KCORE_TEXT 116 def_bool y 117 118config CPU_BIG_ENDIAN 119 def_bool y 120 121config STACKTRACE_SUPPORT 122 bool 123 default y if SPARC64 124 125config LOCKDEP_SUPPORT 126 bool 127 default y if SPARC64 128 129config ARCH_HIBERNATION_POSSIBLE 130 def_bool y if SPARC64 131 132config AUDIT_ARCH 133 bool 134 default y 135 136config MMU 137 bool 138 default y 139 140config HIGHMEM 141 bool 142 default y if SPARC32 143 select KMAP_LOCAL 144 145config PGTABLE_LEVELS 146 default 4 if 64BIT 147 default 3 148 149config ARCH_SUPPORTS_UPROBES 150 def_bool y if SPARC64 151 152menu "Processor type and features" 153 154config SMP 155 bool "Symmetric multi-processing support" 156 help 157 This enables support for systems with more than one CPU. If you have 158 a system with only one CPU, say N. If you have a system with more 159 than one CPU, say Y. 160 161 If you say N here, the kernel will run on uni- and multiprocessor 162 machines, but will use only one CPU of a multiprocessor machine. If 163 you say Y here, the kernel will run on many, but not all, 164 uniprocessor machines. On a uniprocessor machine, the kernel 165 will run faster if you say N here. 166 167 People using multiprocessor machines who say Y here should also say 168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 169 Management" code will be disabled if you say Y here. 170 171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 172 available at <https://www.tldp.org/docs.html#howto>. 173 174 If you don't know what to do here, say N. 175 176config NR_CPUS 177 int "Maximum number of CPUs" 178 depends on SMP 179 range 2 32 if SPARC32 180 range 2 4096 if SPARC64 181 default 32 if SPARC32 182 default 4096 if SPARC64 183 184source "kernel/Kconfig.hz" 185 186config GENERIC_HWEIGHT 187 bool 188 default y 189 190config GENERIC_CALIBRATE_DELAY 191 bool 192 default y 193 194config ARCH_MAY_HAVE_PC_FDC 195 bool 196 default y 197 198config EMULATED_CMPXCHG 199 bool 200 default y if SPARC32 201 help 202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 203 is emulated, and therefore it is not completely atomic. 204 205# Makefile helpers 206config SPARC32_SMP 207 bool 208 default y 209 depends on SPARC32 && SMP 210 211config SPARC64_SMP 212 bool 213 default y 214 depends on SPARC64 && SMP 215 216config EARLYFB 217 bool "Support for early boot text console" 218 default y 219 depends on SPARC64 220 select FONT_SUN8x16 221 select FONT_SUPPORT 222 help 223 Say Y here to enable a faster early framebuffer boot console. 224 225config HOTPLUG_CPU 226 bool "Support for hot-pluggable CPUs" 227 depends on SPARC64 && SMP 228 help 229 Say Y here to experiment with turning CPUs off and on. CPUs 230 can be controlled through /sys/devices/system/cpu/cpu#. 231 Say N if you want to disable CPU hotplug. 232 233if SPARC64 234source "drivers/cpufreq/Kconfig" 235endif 236 237config US3_MC 238 tristate "UltraSPARC-III Memory Controller driver" 239 depends on SPARC64 240 default y 241 help 242 This adds a driver for the UltraSPARC-III memory controller. 243 Loading this driver allows exact mnemonic strings to be 244 printed in the event of a memory error, so that the faulty DIMM 245 on the motherboard can be matched to the error. 246 247 If in doubt, say Y, as this information can be very useful. 248 249# Global things across all Sun machines. 250config GENERIC_LOCKBREAK 251 bool 252 default y 253 depends on SPARC64 && SMP && PREEMPTION 254 255config NUMA 256 bool "NUMA support" 257 depends on SPARC64 && SMP 258 259config NODES_SHIFT 260 int "Maximum NUMA Nodes (as a power of 2)" 261 range 4 5 if SPARC64 262 default "5" 263 depends on NUMA 264 help 265 Specify the maximum number of NUMA Nodes available on the target 266 system. Increases memory reserved to accommodate various tables. 267 268config ARCH_SPARSEMEM_ENABLE 269 def_bool y if SPARC64 270 select SPARSEMEM_VMEMMAP_ENABLE 271 272config ARCH_SPARSEMEM_DEFAULT 273 def_bool y if SPARC64 274 275config ARCH_FORCE_MAX_ORDER 276 int "Order of maximal physically contiguous allocations" 277 default "12" 278 help 279 The kernel page allocator limits the size of maximal physically 280 contiguous allocations. The limit is called MAX_PAGE_ORDER and it 281 defines the maximal power of two of number of pages that can be 282 allocated as a single contiguous block. This option allows 283 overriding the default setting when ability to allocate very 284 large blocks of physically contiguous memory is required. 285 286 Don't change if unsure. 287 288if SPARC64 || COMPILE_TEST 289source "kernel/power/Kconfig" 290endif 291 292config SCHED_SMT 293 bool "SMT (Hyperthreading) scheduler support" 294 depends on SPARC64 && SMP 295 default y 296 help 297 SMT scheduler support improves the CPU scheduler's decision making 298 when dealing with SPARC cpus at a cost of slightly increased overhead 299 in some places. If unsure say N here. 300 301config SCHED_MC 302 bool "Multi-core scheduler support" 303 depends on SPARC64 && SMP 304 default y 305 help 306 Multi-core scheduler support improves the CPU scheduler's decision 307 making when dealing with multi-core CPU chips at a cost of slightly 308 increased overhead in some places. If unsure say N here. 309 310config CMDLINE_BOOL 311 bool "Default bootloader kernel arguments" 312 depends on SPARC64 313 314config CMDLINE 315 string "Initial kernel command string" 316 depends on CMDLINE_BOOL 317 default "console=ttyS0,9600 root=/dev/sda1" 318 help 319 Say Y here if you want to be able to pass default arguments to 320 the kernel. This will be overridden by the bootloader, if you 321 use one (such as SILO). This is most useful if you want to boot 322 a kernel from TFTP, and want default options to be available 323 with having them passed on the command line. 324 325 NOTE: This option WILL override the PROM bootargs setting! 326 327config SUN_PM 328 bool 329 default y if SPARC32 330 help 331 Enable power management and CPU standby features on supported 332 SPARC platforms. 333 334config SPARC_LED 335 tristate "Sun4m LED driver" 336 depends on SPARC32 337 help 338 This driver toggles the front-panel LED on sun4m systems 339 in a user-specifiable manner. Its state can be probed 340 by reading /proc/led and its blinking mode can be changed 341 via writes to /proc/led 342 343config SERIAL_CONSOLE 344 bool 345 depends on SPARC32 346 default y 347 help 348 If you say Y here, it will be possible to use a serial port as the 349 system console (the system console is the device which receives all 350 kernel messages and warnings and which allows logins in single user 351 mode). This could be useful if some terminal or printer is connected 352 to that serial port. 353 354 Even if you say Y here, the currently visible virtual console 355 (/dev/tty0) will still be used as the system console by default, but 356 you can alter that using a kernel command line option such as 357 "console=ttyS1". (Try "man bootparam" or see the documentation of 358 your boot loader (silo) about how to pass options to the kernel at 359 boot time.) 360 361 If you don't have a graphics card installed and you say Y here, the 362 kernel will automatically use the first serial line, /dev/ttyS0, as 363 system console. 364 365 If unsure, say N. 366 367config SPARC_LEON 368 bool "Sparc Leon processor family" 369 depends on SPARC32 370 select USB_EHCI_BIG_ENDIAN_MMIO 371 select USB_EHCI_BIG_ENDIAN_DESC 372 select USB_UHCI_BIG_ENDIAN_MMIO 373 select USB_UHCI_BIG_ENDIAN_DESC 374 help 375 If you say Y here if you are running on a SPARC-LEON processor. 376 The LEON processor is a synthesizable VHDL model of the 377 SPARC-v8 standard. LEON is part of the GRLIB collection of 378 IP cores that are distributed under GPL. GRLIB can be downloaded 379 from www.gaisler.com. You can download a sparc-linux cross-compilation 380 toolchain at www.gaisler.com. 381 382if SPARC_LEON 383menu "U-Boot options" 384 385config UBOOT_LOAD_ADDR 386 hex "uImage Load Address" 387 default 0x40004000 388 help 389 U-Boot kernel load address, the address in physical address space 390 where u-boot will place the Linux kernel before booting it. 391 This address is normally the base address of main memory + 0x4000. 392 393config UBOOT_FLASH_ADDR 394 hex "uImage.o Load Address" 395 default 0x00080000 396 help 397 Optional setting only affecting the uImage.o ELF-image used to 398 download the uImage file to the target using a ELF-loader other than 399 U-Boot. It may for example be used to download an uImage to FLASH with 400 the GRMON utility before even starting u-boot. 401 402config UBOOT_ENTRY_ADDR 403 hex "uImage Entry Address" 404 default 0xf0004000 405 help 406 Do not change this unless you know what you're doing. This is 407 hardcoded by the SPARC32 and LEON port. 408 409 This is the virtual address u-boot jumps to when booting the Linux 410 Kernel. 411 412endmenu 413endif 414 415endmenu 416 417menu "Bus options (PCI etc.)" 418config SBUS 419 bool 420 default y 421 422config SBUSCHAR 423 bool 424 default y 425 426config SUN_LDOMS 427 bool "Sun Logical Domains support" 428 depends on SPARC64 429 help 430 Say Y here is you want to support virtual devices via 431 Logical Domains. 432 433config PCIC_PCI 434 bool 435 depends on PCI && SPARC32 && !SPARC_LEON 436 default y 437 438config LEON_PCI 439 bool 440 depends on PCI && SPARC_LEON 441 default y 442 443config SPARC_GRPCI1 444 bool "GRPCI Host Bridge Support" 445 depends on LEON_PCI 446 default y 447 help 448 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 449 PCI host controller is typically found in GRLIB SPARC32/LEON 450 systems. The driver has one property (all_pci_errors) controlled 451 from the bootloader that makes the GRPCI to generate interrupts 452 on detected PCI Parity and System errors. 453 454config SPARC_GRPCI2 455 bool "GRPCI2 Host Bridge Support" 456 depends on LEON_PCI 457 default y 458 help 459 Say Y here to include the GRPCI2 Host Bridge Driver. 460 461config SUN_OPENPROMFS 462 tristate "Openprom tree appears in /proc/openprom" 463 help 464 If you say Y, the OpenPROM device tree will be available as a 465 virtual file system, which you can mount to /proc/openprom by "mount 466 -t openpromfs none /proc/openprom". 467 468 To compile the /proc/openprom support as a module, choose M here: the 469 module will be called openpromfs. 470 471 Only choose N if you know in advance that you will not need to modify 472 OpenPROM settings on the running system. 473 474# Makefile helpers 475config SPARC64_PCI 476 bool 477 default y 478 depends on SPARC64 && PCI 479 480config SPARC64_PCI_MSI 481 bool 482 default y 483 depends on SPARC64_PCI && PCI_MSI 484 485endmenu 486 487config COMPAT 488 bool 489 depends on SPARC64 490 default y 491 select HAVE_UID16 492 select ARCH_WANT_OLD_COMPAT_IPC 493 select COMPAT_OLD_SIGACTION 494 495source "drivers/sbus/char/Kconfig" 496