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_ARCH_KGDB if !SMP || SPARC64 23 select HAVE_ARCH_TRACEHOOK 24 select HAVE_ARCH_SECCOMP if SPARC64 25 select HAVE_EXIT_THREAD 26 select HAVE_PCI 27 select SYSCTL_EXCEPTION_TRACE 28 select RTC_CLASS 29 select RTC_DRV_M48T59 30 select RTC_SYSTOHC 31 select HAVE_ARCH_JUMP_LABEL if SPARC64 32 select GENERIC_IRQ_SHOW 33 select ARCH_WANT_IPC_PARSE_VERSION 34 select GENERIC_PCI_IOMAP 35 select HAVE_NMI_WATCHDOG if SPARC64 36 select HAVE_CBPF_JIT if SPARC32 37 select HAVE_EBPF_JIT if SPARC64 38 select HAVE_DEBUG_BUGVERBOSE 39 select GENERIC_SMP_IDLE_THREAD 40 select MODULES_USE_ELF_RELA 41 select PCI_SYSCALL if PCI 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 43 select ODD_RT_SIGACTION 44 select OLD_SIGSUSPEND 45 select CPU_NO_EFFICIENT_FFS 46 select LOCKDEP_SMALL if LOCKDEP 47 select NEED_DMA_MAP_STATE 48 select NEED_SG_DMA_LENGTH 49 select SET_FS 50 select TRACE_IRQFLAGS_SUPPORT 51 52config SPARC32 53 def_bool !64BIT 54 select ARCH_32BIT_OFF_T 55 select ARCH_HAS_SYNC_DMA_FOR_CPU 56 select GENERIC_ATOMIC64 57 select CLZ_TAB 58 select HAVE_UID16 59 select OLD_SIGACTION 60 select ZONE_DMA 61 62config SPARC64 63 def_bool 64BIT 64 select HAVE_FUNCTION_TRACER 65 select HAVE_FUNCTION_GRAPH_TRACER 66 select HAVE_KRETPROBES 67 select HAVE_KPROBES 68 select MMU_GATHER_RCU_TABLE_FREE if SMP 69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 70 select HAVE_DYNAMIC_FTRACE 71 select HAVE_FTRACE_MCOUNT_RECORD 72 select HAVE_SYSCALL_TRACEPOINTS 73 select HAVE_CONTEXT_TRACKING 74 select HAVE_TIF_NOHZ 75 select HAVE_DEBUG_KMEMLEAK 76 select IOMMU_HELPER 77 select SPARSE_IRQ 78 select RTC_DRV_CMOS 79 select RTC_DRV_BQ4802 80 select RTC_DRV_SUN4V 81 select RTC_DRV_STARFIRE 82 select HAVE_PERF_EVENTS 83 select PERF_USE_VMALLOC 84 select ARCH_HAVE_NMI_SAFE_CMPXCHG 85 select HAVE_C_RECORDMCOUNT 86 select HAVE_ARCH_AUDITSYSCALL 87 select ARCH_SUPPORTS_ATOMIC_RMW 88 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 89 select HAVE_NMI 90 select HAVE_REGS_AND_STACK_ACCESS_API 91 select ARCH_USE_QUEUED_RWLOCKS 92 select ARCH_USE_QUEUED_SPINLOCKS 93 select GENERIC_TIME_VSYSCALL 94 select ARCH_CLOCKSOURCE_DATA 95 select ARCH_HAS_PTE_SPECIAL 96 select PCI_DOMAINS if PCI 97 select ARCH_HAS_GIGANTIC_PAGE 98 select HAVE_SOFTIRQ_ON_OWN_STACK 99 100config ARCH_PROC_KCORE_TEXT 101 def_bool y 102 103config CPU_BIG_ENDIAN 104 def_bool y 105 106config ARCH_ATU 107 bool 108 default y if SPARC64 109 110config STACKTRACE_SUPPORT 111 bool 112 default y if SPARC64 113 114config LOCKDEP_SUPPORT 115 bool 116 default y if SPARC64 117 118config ARCH_HIBERNATION_POSSIBLE 119 def_bool y if SPARC64 120 121config AUDIT_ARCH 122 bool 123 default y 124 125config HAVE_SETUP_PER_CPU_AREA 126 def_bool y if SPARC64 127 128config NEED_PER_CPU_EMBED_FIRST_CHUNK 129 def_bool y if SPARC64 130 131config NEED_PER_CPU_PAGE_FIRST_CHUNK 132 def_bool y if SPARC64 133 134config MMU 135 bool 136 default y 137 138config HIGHMEM 139 bool 140 default y if SPARC32 141 select KMAP_LOCAL 142 143config GENERIC_ISA_DMA 144 bool 145 default y if SPARC32 146 147config PGTABLE_LEVELS 148 default 4 if 64BIT 149 default 3 150 151config ARCH_SUPPORTS_UPROBES 152 def_bool y if SPARC64 153 154menu "Processor type and features" 155 156config SMP 157 bool "Symmetric multi-processing support" 158 help 159 This enables support for systems with more than one CPU. If you have 160 a system with only one CPU, say N. If you have a system with more 161 than one CPU, say Y. 162 163 If you say N here, the kernel will run on uni- and multiprocessor 164 machines, but will use only one CPU of a multiprocessor machine. If 165 you say Y here, the kernel will run on many, but not all, 166 uniprocessor machines. On a uniprocessor machine, the kernel 167 will run faster if you say N here. 168 169 People using multiprocessor machines who say Y here should also say 170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 171 Management" code will be disabled if you say Y here. 172 173 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 174 available at <https://www.tldp.org/docs.html#howto>. 175 176 If you don't know what to do here, say N. 177 178config NR_CPUS 179 int "Maximum number of CPUs" 180 depends on SMP 181 range 2 32 if SPARC32 182 range 2 4096 if SPARC64 183 default 32 if SPARC32 184 default 4096 if SPARC64 185 186source "kernel/Kconfig.hz" 187 188config GENERIC_HWEIGHT 189 bool 190 default y 191 192config GENERIC_CALIBRATE_DELAY 193 bool 194 default y 195 196config ARCH_MAY_HAVE_PC_FDC 197 bool 198 default y 199 200config EMULATED_CMPXCHG 201 bool 202 default y if SPARC32 203 help 204 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 205 is emulated, and therefore it is not completely atomic. 206 207# Makefile helpers 208config SPARC32_SMP 209 bool 210 default y 211 depends on SPARC32 && SMP 212 213config SPARC64_SMP 214 bool 215 default y 216 depends on SPARC64 && SMP 217 218config EARLYFB 219 bool "Support for early boot text console" 220 default y 221 depends on SPARC64 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 FORCE_MAX_ZONEORDER 276 int "Maximum zone order" 277 default "13" 278 help 279 The kernel memory allocator divides physically contiguous memory 280 blocks into "zones", where each zone is a power of two number of 281 pages. This option selects the largest power of two that the kernel 282 keeps in the memory allocator. If you need to allocate very large 283 blocks of physically contiguous memory, then you may need to 284 increase this value. 285 286 This config option is actually maximum order plus one. For example, 287 a value of 13 means that the largest free memory block is 2^12 pages. 288 289if SPARC64 290source "kernel/power/Kconfig" 291endif 292 293config SCHED_SMT 294 bool "SMT (Hyperthreading) scheduler support" 295 depends on SPARC64 && SMP 296 default y 297 help 298 SMT scheduler support improves the CPU scheduler's decision making 299 when dealing with SPARC cpus at a cost of slightly increased overhead 300 in some places. If unsure say N here. 301 302config SCHED_MC 303 bool "Multi-core scheduler support" 304 depends on SPARC64 && SMP 305 default y 306 help 307 Multi-core scheduler support improves the CPU scheduler's decision 308 making when dealing with multi-core CPU chips at a cost of slightly 309 increased overhead in some places. If unsure say N here. 310 311config CMDLINE_BOOL 312 bool "Default bootloader kernel arguments" 313 depends on SPARC64 314 315config CMDLINE 316 string "Initial kernel command string" 317 depends on CMDLINE_BOOL 318 default "console=ttyS0,9600 root=/dev/sda1" 319 help 320 Say Y here if you want to be able to pass default arguments to 321 the kernel. This will be overridden by the bootloader, if you 322 use one (such as SILO). This is most useful if you want to boot 323 a kernel from TFTP, and want default options to be available 324 with having them passed on the command line. 325 326 NOTE: This option WILL override the PROM bootargs setting! 327 328config SUN_PM 329 bool 330 default y if SPARC32 331 help 332 Enable power management and CPU standby features on supported 333 SPARC platforms. 334 335config SPARC_LED 336 tristate "Sun4m LED driver" 337 depends on SPARC32 338 help 339 This driver toggles the front-panel LED on sun4m systems 340 in a user-specifiable manner. Its state can be probed 341 by reading /proc/led and its blinking mode can be changed 342 via writes to /proc/led 343 344config SERIAL_CONSOLE 345 bool 346 depends on SPARC32 347 default y 348 help 349 If you say Y here, it will be possible to use a serial port as the 350 system console (the system console is the device which receives all 351 kernel messages and warnings and which allows logins in single user 352 mode). This could be useful if some terminal or printer is connected 353 to that serial port. 354 355 Even if you say Y here, the currently visible virtual console 356 (/dev/tty0) will still be used as the system console by default, but 357 you can alter that using a kernel command line option such as 358 "console=ttyS1". (Try "man bootparam" or see the documentation of 359 your boot loader (silo) about how to pass options to the kernel at 360 boot time.) 361 362 If you don't have a graphics card installed and you say Y here, the 363 kernel will automatically use the first serial line, /dev/ttyS0, as 364 system console. 365 366 If unsure, say N. 367 368config SPARC_LEON 369 bool "Sparc Leon processor family" 370 depends on SPARC32 371 select USB_EHCI_BIG_ENDIAN_MMIO 372 select USB_EHCI_BIG_ENDIAN_DESC 373 select USB_UHCI_BIG_ENDIAN_MMIO 374 select USB_UHCI_BIG_ENDIAN_DESC 375 help 376 If you say Y here if you are running on a SPARC-LEON processor. 377 The LEON processor is a synthesizable VHDL model of the 378 SPARC-v8 standard. LEON is part of the GRLIB collection of 379 IP cores that are distributed under GPL. GRLIB can be downloaded 380 from www.gaisler.com. You can download a sparc-linux cross-compilation 381 toolchain at www.gaisler.com. 382 383if SPARC_LEON 384menu "U-Boot options" 385 386config UBOOT_LOAD_ADDR 387 hex "uImage Load Address" 388 default 0x40004000 389 help 390 U-Boot kernel load address, the address in physical address space 391 where u-boot will place the Linux kernel before booting it. 392 This address is normally the base address of main memory + 0x4000. 393 394config UBOOT_FLASH_ADDR 395 hex "uImage.o Load Address" 396 default 0x00080000 397 help 398 Optional setting only affecting the uImage.o ELF-image used to 399 download the uImage file to the target using a ELF-loader other than 400 U-Boot. It may for example be used to download an uImage to FLASH with 401 the GRMON utility before even starting u-boot. 402 403config UBOOT_ENTRY_ADDR 404 hex "uImage Entry Address" 405 default 0xf0004000 406 help 407 Do not change this unless you know what you're doing. This is 408 hardcoded by the SPARC32 and LEON port. 409 410 This is the virtual address u-boot jumps to when booting the Linux 411 Kernel. 412 413endmenu 414endif 415 416endmenu 417 418menu "Bus options (PCI etc.)" 419config SBUS 420 bool 421 default y 422 423config SBUSCHAR 424 bool 425 default y 426 427config SUN_LDOMS 428 bool "Sun Logical Domains support" 429 depends on SPARC64 430 help 431 Say Y here is you want to support virtual devices via 432 Logical Domains. 433 434config PCIC_PCI 435 bool 436 depends on PCI && SPARC32 && !SPARC_LEON 437 default y 438 439config LEON_PCI 440 bool 441 depends on PCI && SPARC_LEON 442 default y 443 444config SPARC_GRPCI1 445 bool "GRPCI Host Bridge Support" 446 depends on LEON_PCI 447 default y 448 help 449 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 450 PCI host controller is typically found in GRLIB SPARC32/LEON 451 systems. The driver has one property (all_pci_errors) controlled 452 from the bootloader that makes the GRPCI to generate interrupts 453 on detected PCI Parity and System errors. 454 455config SPARC_GRPCI2 456 bool "GRPCI2 Host Bridge Support" 457 depends on LEON_PCI 458 default y 459 help 460 Say Y here to include the GRPCI2 Host Bridge Driver. 461 462config SUN_OPENPROMFS 463 tristate "Openprom tree appears in /proc/openprom" 464 help 465 If you say Y, the OpenPROM device tree will be available as a 466 virtual file system, which you can mount to /proc/openprom by "mount 467 -t openpromfs none /proc/openprom". 468 469 To compile the /proc/openprom support as a module, choose M here: the 470 module will be called openpromfs. 471 472 Only choose N if you know in advance that you will not need to modify 473 OpenPROM settings on the running system. 474 475# Makefile helpers 476config SPARC64_PCI 477 bool 478 default y 479 depends on SPARC64 && PCI 480 481config SPARC64_PCI_MSI 482 bool 483 default y 484 depends on SPARC64_PCI && PCI_MSI 485 486endmenu 487 488config COMPAT 489 bool 490 depends on SPARC64 491 default y 492 select HAVE_UID16 493 select ARCH_WANT_OLD_COMPAT_IPC 494 select COMPAT_OLD_SIGACTION 495 496config SYSVIPC_COMPAT 497 bool 498 depends on COMPAT && SYSVIPC 499 default y 500 501source "drivers/sbus/char/Kconfig" 502