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_OPROFILE 24 select HAVE_ARCH_KGDB if !SMP || SPARC64 25 select HAVE_ARCH_TRACEHOOK 26 select HAVE_ARCH_SECCOMP if SPARC64 27 select HAVE_EXIT_THREAD 28 select HAVE_PCI 29 select SYSCTL_EXCEPTION_TRACE 30 select RTC_CLASS 31 select RTC_DRV_M48T59 32 select RTC_SYSTOHC 33 select HAVE_ARCH_JUMP_LABEL if SPARC64 34 select GENERIC_IRQ_SHOW 35 select ARCH_WANT_IPC_PARSE_VERSION 36 select GENERIC_PCI_IOMAP 37 select HAVE_NMI_WATCHDOG 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 GENERIC_CLOCKEVENTS 43 select GENERIC_STRNCPY_FROM_USER 44 select GENERIC_STRNLEN_USER 45 select MODULES_USE_ELF_RELA 46 select PCI_SYSCALL if PCI 47 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 48 select ODD_RT_SIGACTION 49 select OLD_SIGSUSPEND 50 select CPU_NO_EFFICIENT_FFS 51 select LOCKDEP_SMALL if LOCKDEP 52 select NEED_DMA_MAP_STATE 53 select NEED_SG_DMA_LENGTH 54 select SET_FS 55 56config SPARC32 57 def_bool !64BIT 58 select ARCH_32BIT_OFF_T 59 select ARCH_HAS_SYNC_DMA_FOR_CPU 60 select GENERIC_ATOMIC64 61 select CLZ_TAB 62 select HAVE_UID16 63 select OLD_SIGACTION 64 65config SPARC64 66 def_bool 64BIT 67 select HAVE_FUNCTION_TRACER 68 select HAVE_FUNCTION_GRAPH_TRACER 69 select HAVE_KRETPROBES 70 select HAVE_KPROBES 71 select MMU_GATHER_RCU_TABLE_FREE if SMP 72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 73 select HAVE_DYNAMIC_FTRACE 74 select HAVE_FTRACE_MCOUNT_RECORD 75 select HAVE_SYSCALL_TRACEPOINTS 76 select HAVE_CONTEXT_TRACKING 77 select HAVE_TIF_NOHZ 78 select HAVE_DEBUG_KMEMLEAK 79 select IOMMU_HELPER 80 select SPARSE_IRQ 81 select RTC_DRV_CMOS 82 select RTC_DRV_BQ4802 83 select RTC_DRV_SUN4V 84 select RTC_DRV_STARFIRE 85 select HAVE_PERF_EVENTS 86 select PERF_USE_VMALLOC 87 select ARCH_HAVE_NMI_SAFE_CMPXCHG 88 select HAVE_C_RECORDMCOUNT 89 select HAVE_ARCH_AUDITSYSCALL 90 select ARCH_SUPPORTS_ATOMIC_RMW 91 select HAVE_NMI 92 select HAVE_REGS_AND_STACK_ACCESS_API 93 select ARCH_USE_QUEUED_RWLOCKS 94 select ARCH_USE_QUEUED_SPINLOCKS 95 select GENERIC_TIME_VSYSCALL 96 select ARCH_CLOCKSOURCE_DATA 97 select ARCH_HAS_PTE_SPECIAL 98 select PCI_DOMAINS if PCI 99 select ARCH_HAS_GIGANTIC_PAGE 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 143config ZONE_DMA 144 bool 145 default y if SPARC32 146 147config GENERIC_ISA_DMA 148 bool 149 default y if SPARC32 150 151config ARCH_SUPPORTS_DEBUG_PAGEALLOC 152 def_bool y if SPARC64 153 154config PGTABLE_LEVELS 155 default 4 if 64BIT 156 default 3 157 158config ARCH_SUPPORTS_UPROBES 159 def_bool y if SPARC64 160 161menu "Processor type and features" 162 163config SMP 164 bool "Symmetric multi-processing support" 165 help 166 This enables support for systems with more than one CPU. If you have 167 a system with only one CPU, say N. If you have a system with more 168 than one CPU, say Y. 169 170 If you say N here, the kernel will run on uni- and multiprocessor 171 machines, but will use only one CPU of a multiprocessor machine. If 172 you say Y here, the kernel will run on many, but not all, 173 uniprocessor machines. On a uniprocessor machine, the kernel 174 will run faster if you say N here. 175 176 People using multiprocessor machines who say Y here should also say 177 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 178 Management" code will be disabled if you say Y here. 179 180 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 181 available at <http://www.tldp.org/docs.html#howto>. 182 183 If you don't know what to do here, say N. 184 185config NR_CPUS 186 int "Maximum number of CPUs" 187 depends on SMP 188 range 2 32 if SPARC32 189 range 2 4096 if SPARC64 190 default 32 if SPARC32 191 default 4096 if SPARC64 192 193source "kernel/Kconfig.hz" 194 195config GENERIC_HWEIGHT 196 bool 197 default y 198 199config GENERIC_CALIBRATE_DELAY 200 bool 201 default y 202 203config ARCH_MAY_HAVE_PC_FDC 204 bool 205 default y 206 207config EMULATED_CMPXCHG 208 bool 209 default y if SPARC32 210 help 211 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 212 is emulated, and therefore it is not completely atomic. 213 214# Makefile helpers 215config SPARC32_SMP 216 bool 217 default y 218 depends on SPARC32 && SMP 219 220config SPARC64_SMP 221 bool 222 default y 223 depends on SPARC64 && SMP 224 225config EARLYFB 226 bool "Support for early boot text console" 227 default y 228 depends on SPARC64 229 help 230 Say Y here to enable a faster early framebuffer boot console. 231 232config HOTPLUG_CPU 233 bool "Support for hot-pluggable CPUs" 234 depends on SPARC64 && SMP 235 help 236 Say Y here to experiment with turning CPUs off and on. CPUs 237 can be controlled through /sys/devices/system/cpu/cpu#. 238 Say N if you want to disable CPU hotplug. 239 240if SPARC64 241source "drivers/cpufreq/Kconfig" 242endif 243 244config US3_MC 245 tristate "UltraSPARC-III Memory Controller driver" 246 depends on SPARC64 247 default y 248 help 249 This adds a driver for the UltraSPARC-III memory controller. 250 Loading this driver allows exact mnemonic strings to be 251 printed in the event of a memory error, so that the faulty DIMM 252 on the motherboard can be matched to the error. 253 254 If in doubt, say Y, as this information can be very useful. 255 256# Global things across all Sun machines. 257config GENERIC_LOCKBREAK 258 bool 259 default y 260 depends on SPARC64 && SMP && PREEMPTION 261 262config NUMA 263 bool "NUMA support" 264 depends on SPARC64 && SMP 265 266config NODES_SHIFT 267 int "Maximum NUMA Nodes (as a power of 2)" 268 range 4 5 if SPARC64 269 default "5" 270 depends on NEED_MULTIPLE_NODES 271 help 272 Specify the maximum number of NUMA Nodes available on the target 273 system. Increases memory reserved to accommodate various tables. 274 275config ARCH_SPARSEMEM_ENABLE 276 def_bool y if SPARC64 277 select SPARSEMEM_VMEMMAP_ENABLE 278 279config ARCH_SPARSEMEM_DEFAULT 280 def_bool y if SPARC64 281 282config FORCE_MAX_ZONEORDER 283 int "Maximum zone order" 284 default "13" 285 help 286 The kernel memory allocator divides physically contiguous memory 287 blocks into "zones", where each zone is a power of two number of 288 pages. This option selects the largest power of two that the kernel 289 keeps in the memory allocator. If you need to allocate very large 290 blocks of physically contiguous memory, then you may need to 291 increase this value. 292 293 This config option is actually maximum order plus one. For example, 294 a value of 13 means that the largest free memory block is 2^12 pages. 295 296if SPARC64 297source "kernel/power/Kconfig" 298endif 299 300config SCHED_SMT 301 bool "SMT (Hyperthreading) scheduler support" 302 depends on SPARC64 && SMP 303 default y 304 help 305 SMT scheduler support improves the CPU scheduler's decision making 306 when dealing with SPARC cpus at a cost of slightly increased overhead 307 in some places. If unsure say N here. 308 309config SCHED_MC 310 bool "Multi-core scheduler support" 311 depends on SPARC64 && SMP 312 default y 313 help 314 Multi-core scheduler support improves the CPU scheduler's decision 315 making when dealing with multi-core CPU chips at a cost of slightly 316 increased overhead in some places. If unsure say N here. 317 318config CMDLINE_BOOL 319 bool "Default bootloader kernel arguments" 320 depends on SPARC64 321 322config CMDLINE 323 string "Initial kernel command string" 324 depends on CMDLINE_BOOL 325 default "console=ttyS0,9600 root=/dev/sda1" 326 help 327 Say Y here if you want to be able to pass default arguments to 328 the kernel. This will be overridden by the bootloader, if you 329 use one (such as SILO). This is most useful if you want to boot 330 a kernel from TFTP, and want default options to be available 331 with having them passed on the command line. 332 333 NOTE: This option WILL override the PROM bootargs setting! 334 335config SUN_PM 336 bool 337 default y if SPARC32 338 help 339 Enable power management and CPU standby features on supported 340 SPARC platforms. 341 342config SPARC_LED 343 tristate "Sun4m LED driver" 344 depends on SPARC32 345 help 346 This driver toggles the front-panel LED on sun4m systems 347 in a user-specifiable manner. Its state can be probed 348 by reading /proc/led and its blinking mode can be changed 349 via writes to /proc/led 350 351config SERIAL_CONSOLE 352 bool 353 depends on SPARC32 354 default y 355 help 356 If you say Y here, it will be possible to use a serial port as the 357 system console (the system console is the device which receives all 358 kernel messages and warnings and which allows logins in single user 359 mode). This could be useful if some terminal or printer is connected 360 to that serial port. 361 362 Even if you say Y here, the currently visible virtual console 363 (/dev/tty0) will still be used as the system console by default, but 364 you can alter that using a kernel command line option such as 365 "console=ttyS1". (Try "man bootparam" or see the documentation of 366 your boot loader (silo) about how to pass options to the kernel at 367 boot time.) 368 369 If you don't have a graphics card installed and you say Y here, the 370 kernel will automatically use the first serial line, /dev/ttyS0, as 371 system console. 372 373 If unsure, say N. 374 375config SPARC_LEON 376 bool "Sparc Leon processor family" 377 depends on SPARC32 378 select USB_EHCI_BIG_ENDIAN_MMIO 379 select USB_EHCI_BIG_ENDIAN_DESC 380 select USB_UHCI_BIG_ENDIAN_MMIO 381 select USB_UHCI_BIG_ENDIAN_DESC 382 help 383 If you say Y here if you are running on a SPARC-LEON processor. 384 The LEON processor is a synthesizable VHDL model of the 385 SPARC-v8 standard. LEON is part of the GRLIB collection of 386 IP cores that are distributed under GPL. GRLIB can be downloaded 387 from www.gaisler.com. You can download a sparc-linux cross-compilation 388 toolchain at www.gaisler.com. 389 390if SPARC_LEON 391menu "U-Boot options" 392 393config UBOOT_LOAD_ADDR 394 hex "uImage Load Address" 395 default 0x40004000 396 help 397 U-Boot kernel load address, the address in physical address space 398 where u-boot will place the Linux kernel before booting it. 399 This address is normally the base address of main memory + 0x4000. 400 401config UBOOT_FLASH_ADDR 402 hex "uImage.o Load Address" 403 default 0x00080000 404 help 405 Optional setting only affecting the uImage.o ELF-image used to 406 download the uImage file to the target using a ELF-loader other than 407 U-Boot. It may for example be used to download an uImage to FLASH with 408 the GRMON utility before even starting u-boot. 409 410config UBOOT_ENTRY_ADDR 411 hex "uImage Entry Address" 412 default 0xf0004000 413 help 414 Do not change this unless you know what you're doing. This is 415 hardcoded by the SPARC32 and LEON port. 416 417 This is the virtual address u-boot jumps to when booting the Linux 418 Kernel. 419 420endmenu 421endif 422 423endmenu 424 425menu "Bus options (PCI etc.)" 426config SBUS 427 bool 428 default y 429 430config SBUSCHAR 431 bool 432 default y 433 434config SUN_LDOMS 435 bool "Sun Logical Domains support" 436 depends on SPARC64 437 help 438 Say Y here is you want to support virtual devices via 439 Logical Domains. 440 441config PCIC_PCI 442 bool 443 depends on PCI && SPARC32 && !SPARC_LEON 444 default y 445 446config LEON_PCI 447 bool 448 depends on PCI && SPARC_LEON 449 default y 450 451config SPARC_GRPCI1 452 bool "GRPCI Host Bridge Support" 453 depends on LEON_PCI 454 default y 455 help 456 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 457 PCI host controller is typically found in GRLIB SPARC32/LEON 458 systems. The driver has one property (all_pci_errors) controlled 459 from the bootloader that makes the GRPCI to generate interrupts 460 on detected PCI Parity and System errors. 461 462config SPARC_GRPCI2 463 bool "GRPCI2 Host Bridge Support" 464 depends on LEON_PCI 465 default y 466 help 467 Say Y here to include the GRPCI2 Host Bridge Driver. 468 469config SUN_OPENPROMFS 470 tristate "Openprom tree appears in /proc/openprom" 471 help 472 If you say Y, the OpenPROM device tree will be available as a 473 virtual file system, which you can mount to /proc/openprom by "mount 474 -t openpromfs none /proc/openprom". 475 476 To compile the /proc/openprom support as a module, choose M here: the 477 module will be called openpromfs. 478 479 Only choose N if you know in advance that you will not need to modify 480 OpenPROM settings on the running system. 481 482# Makefile helpers 483config SPARC64_PCI 484 bool 485 default y 486 depends on SPARC64 && PCI 487 488config SPARC64_PCI_MSI 489 bool 490 default y 491 depends on SPARC64_PCI && PCI_MSI 492 493endmenu 494 495config COMPAT 496 bool 497 depends on SPARC64 498 default y 499 select COMPAT_BINFMT_ELF if BINFMT_ELF 500 select HAVE_UID16 501 select ARCH_WANT_OLD_COMPAT_IPC 502 select COMPAT_OLD_SIGACTION 503 504config SYSVIPC_COMPAT 505 bool 506 depends on COMPAT && SYSVIPC 507 default y 508 509source "drivers/sbus/char/Kconfig" 510