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