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_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 17 select ARCH_MIGHT_HAVE_PC_SERIO 18 select DMA_OPS 19 select OF 20 select OF_PROMTREE 21 select HAVE_ASM_MODVERSIONS 22 select HAVE_IDE 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 HAVE_NMI_WATCHDOG if SPARC64 37 select HAVE_CBPF_JIT if SPARC32 38 select HAVE_EBPF_JIT if SPARC64 39 select HAVE_DEBUG_BUGVERBOSE 40 select GENERIC_SMP_IDLE_THREAD 41 select GENERIC_STRNCPY_FROM_USER 42 select GENERIC_STRNLEN_USER 43 select MODULES_USE_ELF_RELA 44 select PCI_SYSCALL if PCI 45 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 46 select ODD_RT_SIGACTION 47 select OLD_SIGSUSPEND 48 select CPU_NO_EFFICIENT_FFS 49 select LOCKDEP_SMALL if LOCKDEP 50 select NEED_DMA_MAP_STATE 51 select NEED_SG_DMA_LENGTH 52 select SET_FS 53 54config SPARC32 55 def_bool !64BIT 56 select ARCH_32BIT_OFF_T 57 select ARCH_HAS_SYNC_DMA_FOR_CPU 58 select GENERIC_ATOMIC64 59 select CLZ_TAB 60 select HAVE_UID16 61 select OLD_SIGACTION 62 63config SPARC64 64 def_bool 64BIT 65 select HAVE_FUNCTION_TRACER 66 select HAVE_FUNCTION_GRAPH_TRACER 67 select HAVE_KRETPROBES 68 select HAVE_KPROBES 69 select MMU_GATHER_RCU_TABLE_FREE if SMP 70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 71 select HAVE_DYNAMIC_FTRACE 72 select HAVE_FTRACE_MCOUNT_RECORD 73 select HAVE_SYSCALL_TRACEPOINTS 74 select HAVE_CONTEXT_TRACKING 75 select HAVE_TIF_NOHZ 76 select HAVE_DEBUG_KMEMLEAK 77 select IOMMU_HELPER 78 select SPARSE_IRQ 79 select RTC_DRV_CMOS 80 select RTC_DRV_BQ4802 81 select RTC_DRV_SUN4V 82 select RTC_DRV_STARFIRE 83 select HAVE_PERF_EVENTS 84 select PERF_USE_VMALLOC 85 select ARCH_HAVE_NMI_SAFE_CMPXCHG 86 select HAVE_C_RECORDMCOUNT 87 select HAVE_ARCH_AUDITSYSCALL 88 select ARCH_SUPPORTS_ATOMIC_RMW 89 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 90 select HAVE_NMI 91 select HAVE_REGS_AND_STACK_ACCESS_API 92 select ARCH_USE_QUEUED_RWLOCKS 93 select ARCH_USE_QUEUED_SPINLOCKS 94 select GENERIC_TIME_VSYSCALL 95 select ARCH_CLOCKSOURCE_DATA 96 select ARCH_HAS_PTE_SPECIAL 97 select PCI_DOMAINS if PCI 98 select ARCH_HAS_GIGANTIC_PAGE 99 select HAVE_SOFTIRQ_ON_OWN_STACK 100 101config ARCH_PROC_KCORE_TEXT 102 def_bool y 103 104config CPU_BIG_ENDIAN 105 def_bool y 106 107config ARCH_ATU 108 bool 109 default y if SPARC64 110 111config STACKTRACE_SUPPORT 112 bool 113 default y if SPARC64 114 115config LOCKDEP_SUPPORT 116 bool 117 default y if SPARC64 118 119config ARCH_HIBERNATION_POSSIBLE 120 def_bool y if SPARC64 121 122config AUDIT_ARCH 123 bool 124 default y 125 126config HAVE_SETUP_PER_CPU_AREA 127 def_bool y if SPARC64 128 129config NEED_PER_CPU_EMBED_FIRST_CHUNK 130 def_bool y if SPARC64 131 132config NEED_PER_CPU_PAGE_FIRST_CHUNK 133 def_bool y if SPARC64 134 135config MMU 136 bool 137 default y 138 139config HIGHMEM 140 bool 141 default y if SPARC32 142 select KMAP_LOCAL 143 144config ZONE_DMA 145 bool 146 default y if SPARC32 147 148config GENERIC_ISA_DMA 149 bool 150 default y if SPARC32 151 152config PGTABLE_LEVELS 153 default 4 if 64BIT 154 default 3 155 156config ARCH_SUPPORTS_UPROBES 157 def_bool y if SPARC64 158 159menu "Processor type and features" 160 161config SMP 162 bool "Symmetric multi-processing support" 163 help 164 This enables support for systems with more than one CPU. If you have 165 a system with only one CPU, say N. If you have a system with more 166 than one CPU, say Y. 167 168 If you say N here, the kernel will run on uni- and multiprocessor 169 machines, but will use only one CPU of a multiprocessor machine. If 170 you say Y here, the kernel will run on many, but not all, 171 uniprocessor machines. On a uniprocessor machine, the kernel 172 will run faster if you say N here. 173 174 People using multiprocessor machines who say Y here should also say 175 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 176 Management" code will be disabled if you say Y here. 177 178 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 179 available at <https://www.tldp.org/docs.html#howto>. 180 181 If you don't know what to do here, say N. 182 183config NR_CPUS 184 int "Maximum number of CPUs" 185 depends on SMP 186 range 2 32 if SPARC32 187 range 2 4096 if SPARC64 188 default 32 if SPARC32 189 default 4096 if SPARC64 190 191source "kernel/Kconfig.hz" 192 193config GENERIC_HWEIGHT 194 bool 195 default y 196 197config GENERIC_CALIBRATE_DELAY 198 bool 199 default y 200 201config ARCH_MAY_HAVE_PC_FDC 202 bool 203 default y 204 205config EMULATED_CMPXCHG 206 bool 207 default y if SPARC32 208 help 209 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 210 is emulated, and therefore it is not completely atomic. 211 212# Makefile helpers 213config SPARC32_SMP 214 bool 215 default y 216 depends on SPARC32 && SMP 217 218config SPARC64_SMP 219 bool 220 default y 221 depends on SPARC64 && SMP 222 223config EARLYFB 224 bool "Support for early boot text console" 225 default y 226 depends on SPARC64 227 help 228 Say Y here to enable a faster early framebuffer boot console. 229 230config HOTPLUG_CPU 231 bool "Support for hot-pluggable CPUs" 232 depends on SPARC64 && SMP 233 help 234 Say Y here to experiment with turning CPUs off and on. CPUs 235 can be controlled through /sys/devices/system/cpu/cpu#. 236 Say N if you want to disable CPU hotplug. 237 238if SPARC64 239source "drivers/cpufreq/Kconfig" 240endif 241 242config US3_MC 243 tristate "UltraSPARC-III Memory Controller driver" 244 depends on SPARC64 245 default y 246 help 247 This adds a driver for the UltraSPARC-III memory controller. 248 Loading this driver allows exact mnemonic strings to be 249 printed in the event of a memory error, so that the faulty DIMM 250 on the motherboard can be matched to the error. 251 252 If in doubt, say Y, as this information can be very useful. 253 254# Global things across all Sun machines. 255config GENERIC_LOCKBREAK 256 bool 257 default y 258 depends on SPARC64 && SMP && PREEMPTION 259 260config NUMA 261 bool "NUMA support" 262 depends on SPARC64 && SMP 263 264config NODES_SHIFT 265 int "Maximum NUMA Nodes (as a power of 2)" 266 range 4 5 if SPARC64 267 default "5" 268 depends on NEED_MULTIPLE_NODES 269 help 270 Specify the maximum number of NUMA Nodes available on the target 271 system. Increases memory reserved to accommodate various tables. 272 273config ARCH_SPARSEMEM_ENABLE 274 def_bool y if SPARC64 275 select SPARSEMEM_VMEMMAP_ENABLE 276 277config ARCH_SPARSEMEM_DEFAULT 278 def_bool y if SPARC64 279 280config FORCE_MAX_ZONEORDER 281 int "Maximum zone order" 282 default "13" 283 help 284 The kernel memory allocator divides physically contiguous memory 285 blocks into "zones", where each zone is a power of two number of 286 pages. This option selects the largest power of two that the kernel 287 keeps in the memory allocator. If you need to allocate very large 288 blocks of physically contiguous memory, then you may need to 289 increase this value. 290 291 This config option is actually maximum order plus one. For example, 292 a value of 13 means that the largest free memory block is 2^12 pages. 293 294if SPARC64 295source "kernel/power/Kconfig" 296endif 297 298config SCHED_SMT 299 bool "SMT (Hyperthreading) scheduler support" 300 depends on SPARC64 && SMP 301 default y 302 help 303 SMT scheduler support improves the CPU scheduler's decision making 304 when dealing with SPARC cpus at a cost of slightly increased overhead 305 in some places. If unsure say N here. 306 307config SCHED_MC 308 bool "Multi-core scheduler support" 309 depends on SPARC64 && SMP 310 default y 311 help 312 Multi-core scheduler support improves the CPU scheduler's decision 313 making when dealing with multi-core CPU chips at a cost of slightly 314 increased overhead in some places. If unsure say N here. 315 316config CMDLINE_BOOL 317 bool "Default bootloader kernel arguments" 318 depends on SPARC64 319 320config CMDLINE 321 string "Initial kernel command string" 322 depends on CMDLINE_BOOL 323 default "console=ttyS0,9600 root=/dev/sda1" 324 help 325 Say Y here if you want to be able to pass default arguments to 326 the kernel. This will be overridden by the bootloader, if you 327 use one (such as SILO). This is most useful if you want to boot 328 a kernel from TFTP, and want default options to be available 329 with having them passed on the command line. 330 331 NOTE: This option WILL override the PROM bootargs setting! 332 333config SUN_PM 334 bool 335 default y if SPARC32 336 help 337 Enable power management and CPU standby features on supported 338 SPARC platforms. 339 340config SPARC_LED 341 tristate "Sun4m LED driver" 342 depends on SPARC32 343 help 344 This driver toggles the front-panel LED on sun4m systems 345 in a user-specifiable manner. Its state can be probed 346 by reading /proc/led and its blinking mode can be changed 347 via writes to /proc/led 348 349config SERIAL_CONSOLE 350 bool 351 depends on SPARC32 352 default y 353 help 354 If you say Y here, it will be possible to use a serial port as the 355 system console (the system console is the device which receives all 356 kernel messages and warnings and which allows logins in single user 357 mode). This could be useful if some terminal or printer is connected 358 to that serial port. 359 360 Even if you say Y here, the currently visible virtual console 361 (/dev/tty0) will still be used as the system console by default, but 362 you can alter that using a kernel command line option such as 363 "console=ttyS1". (Try "man bootparam" or see the documentation of 364 your boot loader (silo) about how to pass options to the kernel at 365 boot time.) 366 367 If you don't have a graphics card installed and you say Y here, the 368 kernel will automatically use the first serial line, /dev/ttyS0, as 369 system console. 370 371 If unsure, say N. 372 373config SPARC_LEON 374 bool "Sparc Leon processor family" 375 depends on SPARC32 376 select USB_EHCI_BIG_ENDIAN_MMIO 377 select USB_EHCI_BIG_ENDIAN_DESC 378 select USB_UHCI_BIG_ENDIAN_MMIO 379 select USB_UHCI_BIG_ENDIAN_DESC 380 help 381 If you say Y here if you are running on a SPARC-LEON processor. 382 The LEON processor is a synthesizable VHDL model of the 383 SPARC-v8 standard. LEON is part of the GRLIB collection of 384 IP cores that are distributed under GPL. GRLIB can be downloaded 385 from www.gaisler.com. You can download a sparc-linux cross-compilation 386 toolchain at www.gaisler.com. 387 388if SPARC_LEON 389menu "U-Boot options" 390 391config UBOOT_LOAD_ADDR 392 hex "uImage Load Address" 393 default 0x40004000 394 help 395 U-Boot kernel load address, the address in physical address space 396 where u-boot will place the Linux kernel before booting it. 397 This address is normally the base address of main memory + 0x4000. 398 399config UBOOT_FLASH_ADDR 400 hex "uImage.o Load Address" 401 default 0x00080000 402 help 403 Optional setting only affecting the uImage.o ELF-image used to 404 download the uImage file to the target using a ELF-loader other than 405 U-Boot. It may for example be used to download an uImage to FLASH with 406 the GRMON utility before even starting u-boot. 407 408config UBOOT_ENTRY_ADDR 409 hex "uImage Entry Address" 410 default 0xf0004000 411 help 412 Do not change this unless you know what you're doing. This is 413 hardcoded by the SPARC32 and LEON port. 414 415 This is the virtual address u-boot jumps to when booting the Linux 416 Kernel. 417 418endmenu 419endif 420 421endmenu 422 423menu "Bus options (PCI etc.)" 424config SBUS 425 bool 426 default y 427 428config SBUSCHAR 429 bool 430 default y 431 432config SUN_LDOMS 433 bool "Sun Logical Domains support" 434 depends on SPARC64 435 help 436 Say Y here is you want to support virtual devices via 437 Logical Domains. 438 439config PCIC_PCI 440 bool 441 depends on PCI && SPARC32 && !SPARC_LEON 442 default y 443 444config LEON_PCI 445 bool 446 depends on PCI && SPARC_LEON 447 default y 448 449config SPARC_GRPCI1 450 bool "GRPCI Host Bridge Support" 451 depends on LEON_PCI 452 default y 453 help 454 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 455 PCI host controller is typically found in GRLIB SPARC32/LEON 456 systems. The driver has one property (all_pci_errors) controlled 457 from the bootloader that makes the GRPCI to generate interrupts 458 on detected PCI Parity and System errors. 459 460config SPARC_GRPCI2 461 bool "GRPCI2 Host Bridge Support" 462 depends on LEON_PCI 463 default y 464 help 465 Say Y here to include the GRPCI2 Host Bridge Driver. 466 467config SUN_OPENPROMFS 468 tristate "Openprom tree appears in /proc/openprom" 469 help 470 If you say Y, the OpenPROM device tree will be available as a 471 virtual file system, which you can mount to /proc/openprom by "mount 472 -t openpromfs none /proc/openprom". 473 474 To compile the /proc/openprom support as a module, choose M here: the 475 module will be called openpromfs. 476 477 Only choose N if you know in advance that you will not need to modify 478 OpenPROM settings on the running system. 479 480# Makefile helpers 481config SPARC64_PCI 482 bool 483 default y 484 depends on SPARC64 && PCI 485 486config SPARC64_PCI_MSI 487 bool 488 default y 489 depends on SPARC64_PCI && PCI_MSI 490 491endmenu 492 493config COMPAT 494 bool 495 depends on SPARC64 496 default y 497 select HAVE_UID16 498 select ARCH_WANT_OLD_COMPAT_IPC 499 select COMPAT_OLD_SIGACTION 500 501config SYSVIPC_COMPAT 502 bool 503 depends on COMPAT && SYSVIPC 504 default y 505 506source "drivers/sbus/char/Kconfig" 507