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