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 CLZ_TAB 57 select DMA_DIRECT_REMAP 58 select GENERIC_ATOMIC64 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 select HAVE_SETUP_PER_CPU_AREA 101 select NEED_PER_CPU_EMBED_FIRST_CHUNK 102 select NEED_PER_CPU_PAGE_FIRST_CHUNK 103 104config ARCH_PROC_KCORE_TEXT 105 def_bool y 106 107config CPU_BIG_ENDIAN 108 def_bool y 109 110config ARCH_ATU 111 bool 112 default y if SPARC64 113 114config STACKTRACE_SUPPORT 115 bool 116 default y if SPARC64 117 118config LOCKDEP_SUPPORT 119 bool 120 default y if SPARC64 121 122config ARCH_HIBERNATION_POSSIBLE 123 def_bool y if SPARC64 124 125config AUDIT_ARCH 126 bool 127 default y 128 129config MMU 130 bool 131 default y 132 133config HIGHMEM 134 bool 135 default y if SPARC32 136 select KMAP_LOCAL 137 138config GENERIC_ISA_DMA 139 bool 140 default y if SPARC32 141 142config PGTABLE_LEVELS 143 default 4 if 64BIT 144 default 3 145 146config ARCH_SUPPORTS_UPROBES 147 def_bool y if SPARC64 148 149menu "Processor type and features" 150 151config SMP 152 bool "Symmetric multi-processing support" 153 help 154 This enables support for systems with more than one CPU. If you have 155 a system with only one CPU, say N. If you have a system with more 156 than one CPU, say Y. 157 158 If you say N here, the kernel will run on uni- and multiprocessor 159 machines, but will use only one CPU of a multiprocessor machine. If 160 you say Y here, the kernel will run on many, but not all, 161 uniprocessor machines. On a uniprocessor machine, the kernel 162 will run faster if you say N here. 163 164 People using multiprocessor machines who say Y here should also say 165 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 166 Management" code will be disabled if you say Y here. 167 168 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 169 available at <https://www.tldp.org/docs.html#howto>. 170 171 If you don't know what to do here, say N. 172 173config NR_CPUS 174 int "Maximum number of CPUs" 175 depends on SMP 176 range 2 32 if SPARC32 177 range 2 4096 if SPARC64 178 default 32 if SPARC32 179 default 4096 if SPARC64 180 181source "kernel/Kconfig.hz" 182 183config GENERIC_HWEIGHT 184 bool 185 default y 186 187config GENERIC_CALIBRATE_DELAY 188 bool 189 default y 190 191config ARCH_MAY_HAVE_PC_FDC 192 bool 193 default y 194 195config EMULATED_CMPXCHG 196 bool 197 default y if SPARC32 198 help 199 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 200 is emulated, and therefore it is not completely atomic. 201 202# Makefile helpers 203config SPARC32_SMP 204 bool 205 default y 206 depends on SPARC32 && SMP 207 208config SPARC64_SMP 209 bool 210 default y 211 depends on SPARC64 && SMP 212 213config EARLYFB 214 bool "Support for early boot text console" 215 default y 216 depends on SPARC64 217 help 218 Say Y here to enable a faster early framebuffer boot console. 219 220config HOTPLUG_CPU 221 bool "Support for hot-pluggable CPUs" 222 depends on SPARC64 && SMP 223 help 224 Say Y here to experiment with turning CPUs off and on. CPUs 225 can be controlled through /sys/devices/system/cpu/cpu#. 226 Say N if you want to disable CPU hotplug. 227 228if SPARC64 229source "drivers/cpufreq/Kconfig" 230endif 231 232config US3_MC 233 tristate "UltraSPARC-III Memory Controller driver" 234 depends on SPARC64 235 default y 236 help 237 This adds a driver for the UltraSPARC-III memory controller. 238 Loading this driver allows exact mnemonic strings to be 239 printed in the event of a memory error, so that the faulty DIMM 240 on the motherboard can be matched to the error. 241 242 If in doubt, say Y, as this information can be very useful. 243 244# Global things across all Sun machines. 245config GENERIC_LOCKBREAK 246 bool 247 default y 248 depends on SPARC64 && SMP && PREEMPTION 249 250config NUMA 251 bool "NUMA support" 252 depends on SPARC64 && SMP 253 254config NODES_SHIFT 255 int "Maximum NUMA Nodes (as a power of 2)" 256 range 4 5 if SPARC64 257 default "5" 258 depends on NUMA 259 help 260 Specify the maximum number of NUMA Nodes available on the target 261 system. Increases memory reserved to accommodate various tables. 262 263config ARCH_SPARSEMEM_ENABLE 264 def_bool y if SPARC64 265 select SPARSEMEM_VMEMMAP_ENABLE 266 267config ARCH_SPARSEMEM_DEFAULT 268 def_bool y if SPARC64 269 270config FORCE_MAX_ZONEORDER 271 int "Maximum zone order" 272 default "13" 273 help 274 The kernel memory allocator divides physically contiguous memory 275 blocks into "zones", where each zone is a power of two number of 276 pages. This option selects the largest power of two that the kernel 277 keeps in the memory allocator. If you need to allocate very large 278 blocks of physically contiguous memory, then you may need to 279 increase this value. 280 281 This config option is actually maximum order plus one. For example, 282 a value of 13 means that the largest free memory block is 2^12 pages. 283 284if SPARC64 285source "kernel/power/Kconfig" 286endif 287 288config SCHED_SMT 289 bool "SMT (Hyperthreading) scheduler support" 290 depends on SPARC64 && SMP 291 default y 292 help 293 SMT scheduler support improves the CPU scheduler's decision making 294 when dealing with SPARC cpus at a cost of slightly increased overhead 295 in some places. If unsure say N here. 296 297config SCHED_MC 298 bool "Multi-core scheduler support" 299 depends on SPARC64 && SMP 300 default y 301 help 302 Multi-core scheduler support improves the CPU scheduler's decision 303 making when dealing with multi-core CPU chips at a cost of slightly 304 increased overhead in some places. If unsure say N here. 305 306config CMDLINE_BOOL 307 bool "Default bootloader kernel arguments" 308 depends on SPARC64 309 310config CMDLINE 311 string "Initial kernel command string" 312 depends on CMDLINE_BOOL 313 default "console=ttyS0,9600 root=/dev/sda1" 314 help 315 Say Y here if you want to be able to pass default arguments to 316 the kernel. This will be overridden by the bootloader, if you 317 use one (such as SILO). This is most useful if you want to boot 318 a kernel from TFTP, and want default options to be available 319 with having them passed on the command line. 320 321 NOTE: This option WILL override the PROM bootargs setting! 322 323config SUN_PM 324 bool 325 default y if SPARC32 326 help 327 Enable power management and CPU standby features on supported 328 SPARC platforms. 329 330config SPARC_LED 331 tristate "Sun4m LED driver" 332 depends on SPARC32 333 help 334 This driver toggles the front-panel LED on sun4m systems 335 in a user-specifiable manner. Its state can be probed 336 by reading /proc/led and its blinking mode can be changed 337 via writes to /proc/led 338 339config SERIAL_CONSOLE 340 bool 341 depends on SPARC32 342 default y 343 help 344 If you say Y here, it will be possible to use a serial port as the 345 system console (the system console is the device which receives all 346 kernel messages and warnings and which allows logins in single user 347 mode). This could be useful if some terminal or printer is connected 348 to that serial port. 349 350 Even if you say Y here, the currently visible virtual console 351 (/dev/tty0) will still be used as the system console by default, but 352 you can alter that using a kernel command line option such as 353 "console=ttyS1". (Try "man bootparam" or see the documentation of 354 your boot loader (silo) about how to pass options to the kernel at 355 boot time.) 356 357 If you don't have a graphics card installed and you say Y here, the 358 kernel will automatically use the first serial line, /dev/ttyS0, as 359 system console. 360 361 If unsure, say N. 362 363config SPARC_LEON 364 bool "Sparc Leon processor family" 365 depends on SPARC32 366 select USB_EHCI_BIG_ENDIAN_MMIO 367 select USB_EHCI_BIG_ENDIAN_DESC 368 select USB_UHCI_BIG_ENDIAN_MMIO 369 select USB_UHCI_BIG_ENDIAN_DESC 370 help 371 If you say Y here if you are running on a SPARC-LEON processor. 372 The LEON processor is a synthesizable VHDL model of the 373 SPARC-v8 standard. LEON is part of the GRLIB collection of 374 IP cores that are distributed under GPL. GRLIB can be downloaded 375 from www.gaisler.com. You can download a sparc-linux cross-compilation 376 toolchain at www.gaisler.com. 377 378if SPARC_LEON 379menu "U-Boot options" 380 381config UBOOT_LOAD_ADDR 382 hex "uImage Load Address" 383 default 0x40004000 384 help 385 U-Boot kernel load address, the address in physical address space 386 where u-boot will place the Linux kernel before booting it. 387 This address is normally the base address of main memory + 0x4000. 388 389config UBOOT_FLASH_ADDR 390 hex "uImage.o Load Address" 391 default 0x00080000 392 help 393 Optional setting only affecting the uImage.o ELF-image used to 394 download the uImage file to the target using a ELF-loader other than 395 U-Boot. It may for example be used to download an uImage to FLASH with 396 the GRMON utility before even starting u-boot. 397 398config UBOOT_ENTRY_ADDR 399 hex "uImage Entry Address" 400 default 0xf0004000 401 help 402 Do not change this unless you know what you're doing. This is 403 hardcoded by the SPARC32 and LEON port. 404 405 This is the virtual address u-boot jumps to when booting the Linux 406 Kernel. 407 408endmenu 409endif 410 411endmenu 412 413menu "Bus options (PCI etc.)" 414config SBUS 415 bool 416 default y 417 418config SBUSCHAR 419 bool 420 default y 421 422config SUN_LDOMS 423 bool "Sun Logical Domains support" 424 depends on SPARC64 425 help 426 Say Y here is you want to support virtual devices via 427 Logical Domains. 428 429config PCIC_PCI 430 bool 431 depends on PCI && SPARC32 && !SPARC_LEON 432 default y 433 434config LEON_PCI 435 bool 436 depends on PCI && SPARC_LEON 437 default y 438 439config SPARC_GRPCI1 440 bool "GRPCI Host Bridge Support" 441 depends on LEON_PCI 442 default y 443 help 444 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 445 PCI host controller is typically found in GRLIB SPARC32/LEON 446 systems. The driver has one property (all_pci_errors) controlled 447 from the bootloader that makes the GRPCI to generate interrupts 448 on detected PCI Parity and System errors. 449 450config SPARC_GRPCI2 451 bool "GRPCI2 Host Bridge Support" 452 depends on LEON_PCI 453 default y 454 help 455 Say Y here to include the GRPCI2 Host Bridge Driver. 456 457config SUN_OPENPROMFS 458 tristate "Openprom tree appears in /proc/openprom" 459 help 460 If you say Y, the OpenPROM device tree will be available as a 461 virtual file system, which you can mount to /proc/openprom by "mount 462 -t openpromfs none /proc/openprom". 463 464 To compile the /proc/openprom support as a module, choose M here: the 465 module will be called openpromfs. 466 467 Only choose N if you know in advance that you will not need to modify 468 OpenPROM settings on the running system. 469 470# Makefile helpers 471config SPARC64_PCI 472 bool 473 default y 474 depends on SPARC64 && PCI 475 476config SPARC64_PCI_MSI 477 bool 478 default y 479 depends on SPARC64_PCI && PCI_MSI 480 481endmenu 482 483config COMPAT 484 bool 485 depends on SPARC64 486 default y 487 select HAVE_UID16 488 select ARCH_WANT_OLD_COMPAT_IPC 489 select COMPAT_OLD_SIGACTION 490 491config SYSVIPC_COMPAT 492 bool 493 depends on COMPAT && SYSVIPC 494 default y 495 496source "drivers/sbus/char/Kconfig" 497