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