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_HAS_CPU_CACHE_ALIASING 17 select ARCH_HAS_DMA_OPS 18 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 19 select ARCH_MIGHT_HAVE_PC_SERIO 20 select OF 21 select OF_PROMTREE 22 select HAVE_ASM_MODVERSIONS 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 HAS_IOPORT 37 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 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 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 TRACE_IRQFLAGS_SUPPORT 52 53config SPARC32 54 def_bool !64BIT 55 select ARCH_32BIT_OFF_T 56 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP 57 select ARCH_HAS_SYNC_DMA_FOR_CPU 58 select CLZ_TAB 59 select DMA_DIRECT_REMAP 60 select GENERIC_ATOMIC64 61 select GENERIC_LIB_CMPDI2 62 select GENERIC_LIB_UCMPDI2 63 select HAVE_UID16 64 select HAVE_PAGE_SIZE_4KB 65 select LOCK_MM_AND_FIND_VMA 66 select OLD_SIGACTION 67 select ZONE_DMA 68 69config SPARC64 70 def_bool 64BIT 71 select ALTERNATE_USER_ADDRESS_SPACE 72 select HAVE_FUNCTION_TRACER 73 select HAVE_FUNCTION_GRAPH_TRACER 74 select HAVE_KRETPROBES 75 select HAVE_KPROBES 76 select MMU_GATHER_RCU_TABLE_FREE if SMP 77 select MMU_GATHER_MERGE_VMAS 78 select MMU_GATHER_NO_FLUSH_CACHE 79 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 80 select HAVE_DYNAMIC_FTRACE 81 select HAVE_PAGE_SIZE_8KB 82 select HAVE_SYSCALL_TRACEPOINTS 83 select HAVE_CONTEXT_TRACKING_USER 84 select HAVE_TIF_NOHZ 85 select HAVE_DEBUG_KMEMLEAK 86 select IOMMU_HELPER 87 select SPARSE_IRQ 88 select RTC_DRV_CMOS 89 select RTC_DRV_BQ4802 90 select RTC_DRV_SUN4V 91 select RTC_DRV_STARFIRE 92 select HAVE_PERF_EVENTS 93 select PERF_USE_VMALLOC 94 select ARCH_HAVE_NMI_SAFE_CMPXCHG 95 select HAVE_C_RECORDMCOUNT 96 select HAVE_ARCH_AUDITSYSCALL 97 select ARCH_SUPPORTS_ATOMIC_RMW 98 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 99 select ARCH_SUPPORTS_HUGETLBFS 100 select HAVE_NMI 101 select HAVE_REGS_AND_STACK_ACCESS_API 102 select ARCH_USE_QUEUED_RWLOCKS 103 select ARCH_USE_QUEUED_SPINLOCKS 104 select GENERIC_TIME_VSYSCALL 105 select ARCH_CLOCKSOURCE_DATA 106 select ARCH_HAS_PTE_SPECIAL 107 select PCI_DOMAINS if PCI 108 select ARCH_HAS_GIGANTIC_PAGE 109 select HAVE_SOFTIRQ_ON_OWN_STACK 110 select HAVE_SETUP_PER_CPU_AREA 111 select NEED_PER_CPU_EMBED_FIRST_CHUNK 112 select NEED_PER_CPU_PAGE_FIRST_CHUNK 113 select ARCH_SUPPORTS_SCHED_SMT if SMP 114 select ARCH_SUPPORTS_SCHED_MC if SMP 115 select ARCH_HAS_LAZY_MMU_MODE 116 117config ARCH_PROC_KCORE_TEXT 118 def_bool y 119 120config CPU_BIG_ENDIAN 121 def_bool y 122 123config STACKTRACE_SUPPORT 124 bool 125 default y if SPARC64 126 127config LOCKDEP_SUPPORT 128 bool 129 default y if SPARC64 130 131config ARCH_HIBERNATION_POSSIBLE 132 def_bool y if SPARC64 133 134config AUDIT_ARCH 135 bool 136 default y 137 138config MMU 139 bool 140 default y 141 142config HIGHMEM 143 bool 144 default y if SPARC32 145 select KMAP_LOCAL 146 147config PGTABLE_LEVELS 148 default 4 if 64BIT 149 default 3 150 151config ARCH_SUPPORTS_UPROBES 152 def_bool y if SPARC64 153 154menu "Processor type and features" 155 156config SMP 157 bool "Symmetric multi-processing support" 158 help 159 This enables support for systems with more than one CPU. If you have 160 a system with only one CPU, say N. If you have a system with more 161 than one CPU, say Y. 162 163 If you say N here, the kernel will run on uni- and multiprocessor 164 machines, but will use only one CPU of a multiprocessor machine. If 165 you say Y here, the kernel will run on many, but not all, 166 uniprocessor machines. On a uniprocessor machine, the kernel 167 will run faster if you say N here. 168 169 People using multiprocessor machines who say Y here should also say 170 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 171 Management" code will be disabled if you say Y here. 172 173 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 174 available at <https://www.tldp.org/docs.html#howto>. 175 176 If you don't know what to do here, say N. 177 178config NR_CPUS 179 int "Maximum number of CPUs" 180 depends on SMP 181 range 2 32 if SPARC32 182 range 2 4096 if SPARC64 183 default 32 if SPARC32 184 default 4096 if SPARC64 185 186source "kernel/Kconfig.hz" 187 188config GENERIC_HWEIGHT 189 bool 190 default y 191 192config GENERIC_CALIBRATE_DELAY 193 bool 194 default y 195 196config ARCH_MAY_HAVE_PC_FDC 197 bool 198 default y 199 200config EMULATED_CMPXCHG 201 bool 202 default y if SPARC32 203 help 204 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 205 is emulated, and therefore it is not completely atomic. 206 207# Makefile helpers 208config SPARC32_SMP 209 bool 210 default y 211 depends on SPARC32 && SMP 212 213config SPARC64_SMP 214 bool 215 default y 216 depends on SPARC64 && SMP 217 218config EARLYFB 219 bool "Support for early boot text console" 220 default y 221 depends on SPARC64 222 select FONT_SUN8x16 223 select FONT_SUPPORT 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 ARCH_FORCE_MAX_ORDER 278 int "Order of maximal physically contiguous allocations" 279 default "12" 280 help 281 The kernel page allocator limits the size of maximal physically 282 contiguous allocations. The limit is called MAX_PAGE_ORDER and it 283 defines the maximal power of two of number of pages that can be 284 allocated as a single contiguous block. This option allows 285 overriding the default setting when ability to allocate very 286 large blocks of physically contiguous memory is required. 287 288 Don't change if unsure. 289 290if SPARC64 || COMPILE_TEST 291source "kernel/power/Kconfig" 292endif 293 294config CMDLINE_BOOL 295 bool "Default bootloader kernel arguments" 296 depends on SPARC64 297 298config CMDLINE 299 string "Initial kernel command string" 300 depends on CMDLINE_BOOL 301 default "console=ttyS0,9600 root=/dev/sda1" 302 help 303 Say Y here if you want to be able to pass default arguments to 304 the kernel. This will be overridden by the bootloader, if you 305 use one (such as SILO). This is most useful if you want to boot 306 a kernel from TFTP, and want default options to be available 307 with having them passed on the command line. 308 309 NOTE: This option WILL override the PROM bootargs setting! 310 311config SUN_PM 312 bool 313 default y if SPARC32 314 help 315 Enable power management and CPU standby features on supported 316 SPARC platforms. 317 318config SPARC_LED 319 tristate "Sun4m LED driver" 320 depends on SPARC32 321 help 322 This driver toggles the front-panel LED on sun4m systems 323 in a user-specifiable manner. Its state can be probed 324 by reading /proc/led and its blinking mode can be changed 325 via writes to /proc/led 326 327config SERIAL_CONSOLE 328 bool 329 depends on SPARC32 330 default y 331 help 332 If you say Y here, it will be possible to use a serial port as the 333 system console (the system console is the device which receives all 334 kernel messages and warnings and which allows logins in single user 335 mode). This could be useful if some terminal or printer is connected 336 to that serial port. 337 338 Even if you say Y here, the currently visible virtual console 339 (/dev/tty0) will still be used as the system console by default, but 340 you can alter that using a kernel command line option such as 341 "console=ttyS1". (Try "man bootparam" or see the documentation of 342 your boot loader (silo) about how to pass options to the kernel at 343 boot time.) 344 345 If you don't have a graphics card installed and you say Y here, the 346 kernel will automatically use the first serial line, /dev/ttyS0, as 347 system console. 348 349 If unsure, say N. 350 351config SPARC_LEON 352 bool "Sparc Leon processor family" 353 depends on SPARC32 354 select USB_EHCI_BIG_ENDIAN_MMIO 355 select USB_EHCI_BIG_ENDIAN_DESC 356 select USB_UHCI_BIG_ENDIAN_MMIO 357 select USB_UHCI_BIG_ENDIAN_DESC 358 help 359 If you say Y here if you are running on a SPARC-LEON processor. 360 The LEON processor is a synthesizable VHDL model of the 361 SPARC-v8 standard. LEON is part of the GRLIB collection of 362 IP cores that are distributed under GPL. GRLIB can be downloaded 363 from www.gaisler.com. You can download a sparc-linux cross-compilation 364 toolchain at www.gaisler.com. 365 366if SPARC_LEON 367menu "U-Boot options" 368 369config UBOOT_LOAD_ADDR 370 hex "uImage Load Address" 371 default 0x40004000 372 help 373 U-Boot kernel load address, the address in physical address space 374 where u-boot will place the Linux kernel before booting it. 375 This address is normally the base address of main memory + 0x4000. 376 377config UBOOT_FLASH_ADDR 378 hex "uImage.o Load Address" 379 default 0x00080000 380 help 381 Optional setting only affecting the uImage.o ELF-image used to 382 download the uImage file to the target using a ELF-loader other than 383 U-Boot. It may for example be used to download an uImage to FLASH with 384 the GRMON utility before even starting u-boot. 385 386config UBOOT_ENTRY_ADDR 387 hex "uImage Entry Address" 388 default 0xf0004000 389 help 390 Do not change this unless you know what you're doing. This is 391 hardcoded by the SPARC32 and LEON port. 392 393 This is the virtual address u-boot jumps to when booting the Linux 394 Kernel. 395 396endmenu 397endif 398 399endmenu 400 401menu "Bus options (PCI etc.)" 402config SBUS 403 bool 404 default y 405 406config SBUSCHAR 407 bool 408 default y 409 410config SUN_LDOMS 411 bool "Sun Logical Domains support" 412 depends on SPARC64 413 help 414 Say Y here is you want to support virtual devices via 415 Logical Domains. 416 417config PCIC_PCI 418 bool 419 depends on PCI && SPARC32 && !SPARC_LEON 420 default y 421 422config LEON_PCI 423 bool 424 depends on PCI && SPARC_LEON 425 default y 426 427config SPARC_GRPCI1 428 bool "GRPCI Host Bridge Support" 429 depends on LEON_PCI 430 default y 431 help 432 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 433 PCI host controller is typically found in GRLIB SPARC32/LEON 434 systems. The driver has one property (all_pci_errors) controlled 435 from the bootloader that makes the GRPCI to generate interrupts 436 on detected PCI Parity and System errors. 437 438config SPARC_GRPCI2 439 bool "GRPCI2 Host Bridge Support" 440 depends on LEON_PCI 441 default y 442 help 443 Say Y here to include the GRPCI2 Host Bridge Driver. 444 445config SUN_OPENPROMFS 446 tristate "Openprom tree appears in /proc/openprom" 447 help 448 If you say Y, the OpenPROM device tree will be available as a 449 virtual file system, which you can mount to /proc/openprom by "mount 450 -t openpromfs none /proc/openprom". 451 452 To compile the /proc/openprom support as a module, choose M here: the 453 module will be called openpromfs. 454 455 Only choose N if you know in advance that you will not need to modify 456 OpenPROM settings on the running system. 457 458# Makefile helpers 459config SPARC64_PCI 460 bool 461 default y 462 depends on SPARC64 && PCI 463 464config SPARC64_PCI_MSI 465 bool 466 default y 467 depends on SPARC64_PCI && PCI_MSI 468 469endmenu 470 471config COMPAT 472 bool 473 depends on SPARC64 474 default y 475 select HAVE_UID16 476 select ARCH_WANT_OLD_COMPAT_IPC 477 select COMPAT_OLD_SIGACTION 478 479source "drivers/sbus/char/Kconfig" 480