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_CC_CAN_LINK 17 select ARCH_HAS_CPU_CACHE_ALIASING 18 select ARCH_HAS_DMA_OPS 19 select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 20 select ARCH_MIGHT_HAVE_PC_SERIO 21 select OF 22 select OF_PROMTREE 23 select HAVE_ASM_MODVERSIONS 24 select HAVE_ARCH_KGDB if !SMP || SPARC64 25 select HAVE_ARCH_TRACEHOOK 26 select HAVE_ARCH_SECCOMP if SPARC64 27 select HAVE_EXIT_THREAD 28 select HAVE_PCI 29 select SYSCTL_EXCEPTION_TRACE 30 select RTC_CLASS 31 select RTC_DRV_M48T59 32 select RTC_SYSTOHC 33 select HAVE_ARCH_JUMP_LABEL if SPARC64 34 select GENERIC_IRQ_SHOW 35 select ARCH_WANT_IPC_PARSE_VERSION 36 select GENERIC_PCI_IOMAP 37 select HAS_IOPORT 38 select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64 39 select HAVE_CBPF_JIT if SPARC32 40 select HAVE_EBPF_JIT if SPARC64 41 select HAVE_DEBUG_BUGVERBOSE 42 select GENERIC_SMP_IDLE_THREAD 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 TRACE_IRQFLAGS_SUPPORT 53 54config SPARC32 55 def_bool !64BIT 56 select ARCH_32BIT_OFF_T 57 select ARCH_HAS_CPU_FINALIZE_INIT if !SMP 58 select ARCH_HAS_SYNC_DMA_FOR_CPU 59 select CLZ_TAB 60 select DMA_DIRECT_REMAP 61 select GENERIC_ATOMIC64 62 select GENERIC_LIB_CMPDI2 63 select GENERIC_LIB_UCMPDI2 64 select HAVE_UID16 65 select HAVE_PAGE_SIZE_4KB 66 select LOCK_MM_AND_FIND_VMA 67 select OLD_SIGACTION 68 select ZONE_DMA 69 70config SPARC64 71 def_bool 64BIT 72 select ALTERNATE_USER_ADDRESS_SPACE 73 select HAVE_FUNCTION_TRACER 74 select HAVE_FUNCTION_GRAPH_TRACER 75 select HAVE_KRETPROBES 76 select HAVE_KPROBES 77 select MMU_GATHER_RCU_TABLE_FREE if SMP 78 select HAVE_ARCH_TLB_REMOVE_TABLE if SMP 79 select MMU_GATHER_MERGE_VMAS 80 select MMU_GATHER_NO_FLUSH_CACHE 81 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 82 select HAVE_DYNAMIC_FTRACE 83 select HAVE_PAGE_SIZE_8KB 84 select HAVE_SYSCALL_TRACEPOINTS 85 select HAVE_CONTEXT_TRACKING_USER 86 select HAVE_TIF_NOHZ 87 select HAVE_DEBUG_KMEMLEAK 88 select IOMMU_HELPER 89 select SPARSE_IRQ 90 select RTC_DRV_CMOS 91 select RTC_DRV_BQ4802 92 select RTC_DRV_SUN4V 93 select RTC_DRV_STARFIRE 94 select HAVE_PERF_EVENTS 95 select PERF_USE_VMALLOC 96 select ARCH_HAVE_NMI_SAFE_CMPXCHG 97 select HAVE_C_RECORDMCOUNT 98 select HAVE_ARCH_AUDITSYSCALL 99 select ARCH_SUPPORTS_ATOMIC_RMW 100 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 101 select ARCH_SUPPORTS_HUGETLBFS 102 select HAVE_NMI 103 select HAVE_REGS_AND_STACK_ACCESS_API 104 select ARCH_USE_QUEUED_RWLOCKS 105 select ARCH_USE_QUEUED_SPINLOCKS 106 select GENERIC_TIME_VSYSCALL 107 select ARCH_HAS_PTE_SPECIAL 108 select PCI_DOMAINS if PCI 109 select ARCH_HAS_GIGANTIC_PAGE 110 select HAVE_SOFTIRQ_ON_OWN_STACK 111 select HAVE_SETUP_PER_CPU_AREA 112 select NEED_PER_CPU_EMBED_FIRST_CHUNK 113 select NEED_PER_CPU_PAGE_FIRST_CHUNK 114 select ARCH_SUPPORTS_SCHED_SMT if SMP 115 select ARCH_SUPPORTS_SCHED_MC if SMP 116 select ARCH_HAS_LAZY_MMU_MODE 117 select HAVE_GENERIC_VDSO 118 select GENERIC_GETTIMEOFDAY 119 120config ARCH_PROC_KCORE_TEXT 121 def_bool y 122 123config CPU_BIG_ENDIAN 124 def_bool y 125 126config STACKTRACE_SUPPORT 127 bool 128 default y if SPARC64 129 130config LOCKDEP_SUPPORT 131 bool 132 default y if SPARC64 133 134config ARCH_HIBERNATION_POSSIBLE 135 def_bool y if SPARC64 136 137config AUDIT_ARCH 138 bool 139 default y 140 141config MMU 142 bool 143 default y 144 145config HIGHMEM 146 bool 147 default y if SPARC32 148 select KMAP_LOCAL 149 150config PGTABLE_LEVELS 151 default 4 if 64BIT 152 default 3 153 154config ARCH_SUPPORTS_UPROBES 155 def_bool y if SPARC64 156 157menu "Processor type and features" 158 159config SMP 160 bool "Symmetric multi-processing support" 161 help 162 This enables support for systems with more than one CPU. If you have 163 a system with only one CPU, say N. If you have a system with more 164 than one CPU, say Y. 165 166 If you say N here, the kernel will run on uni- and multiprocessor 167 machines, but will use only one CPU of a multiprocessor machine. If 168 you say Y here, the kernel will run on many, but not all, 169 uniprocessor machines. On a uniprocessor machine, the kernel 170 will run faster if you say N here. 171 172 People using multiprocessor machines who say Y here should also say 173 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 174 Management" code will be disabled if you say Y here. 175 176 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 177 available at <https://www.tldp.org/docs.html#howto>. 178 179 If you don't know what to do here, say N. 180 181config NR_CPUS 182 int "Maximum number of CPUs" 183 depends on SMP 184 range 2 32 if SPARC32 185 range 2 4096 if SPARC64 186 default 32 if SPARC32 187 default 4096 if SPARC64 188 189source "kernel/Kconfig.hz" 190 191config GENERIC_HWEIGHT 192 bool 193 default y 194 195config GENERIC_CALIBRATE_DELAY 196 bool 197 default y 198 199config ARCH_MAY_HAVE_PC_FDC 200 bool 201 default y 202 203config EMULATED_CMPXCHG 204 bool 205 default y if SPARC32 206 help 207 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 208 is emulated, and therefore it is not completely atomic. 209 210# Makefile helpers 211config SPARC32_SMP 212 bool 213 default y 214 depends on SPARC32 && SMP 215 216config SPARC64_SMP 217 bool 218 default y 219 depends on SPARC64 && SMP 220 221config EARLYFB 222 bool "Support for early boot text console" 223 default y 224 depends on SPARC64 225 select FONT_SUN8x16 226 select FONT_SUPPORT 227 help 228 Say Y here to enable a faster early framebuffer boot console. 229 230config HOTPLUG_CPU 231 bool "Support for hot-pluggable CPUs" 232 depends on SPARC64 && SMP 233 help 234 Say Y here to experiment with turning CPUs off and on. CPUs 235 can be controlled through /sys/devices/system/cpu/cpu#. 236 Say N if you want to disable CPU hotplug. 237 238if SPARC64 239source "drivers/cpufreq/Kconfig" 240endif 241 242config US3_MC 243 tristate "UltraSPARC-III Memory Controller driver" 244 depends on SPARC64 245 default y 246 help 247 This adds a driver for the UltraSPARC-III memory controller. 248 Loading this driver allows exact mnemonic strings to be 249 printed in the event of a memory error, so that the faulty DIMM 250 on the motherboard can be matched to the error. 251 252 If in doubt, say Y, as this information can be very useful. 253 254# Global things across all Sun machines. 255config GENERIC_LOCKBREAK 256 bool 257 default y 258 depends on SPARC64 && SMP && PREEMPTION 259 260config NUMA 261 bool "NUMA support" 262 depends on SPARC64 && SMP 263 264config NODES_SHIFT 265 int "Maximum NUMA Nodes (as a power of 2)" 266 range 4 5 if SPARC64 267 default "5" 268 depends on NUMA 269 help 270 Specify the maximum number of NUMA Nodes available on the target 271 system. Increases memory reserved to accommodate various tables. 272 273config ARCH_SPARSEMEM_ENABLE 274 def_bool y if SPARC64 275 select SPARSEMEM_VMEMMAP_ENABLE 276 277config ARCH_SPARSEMEM_DEFAULT 278 def_bool y if SPARC64 279 280config ARCH_FORCE_MAX_ORDER 281 int "Order of maximal physically contiguous allocations" 282 default "12" 283 help 284 The kernel page allocator limits the size of maximal physically 285 contiguous allocations. The limit is called MAX_PAGE_ORDER and it 286 defines the maximal power of two of number of pages that can be 287 allocated as a single contiguous block. This option allows 288 overriding the default setting when ability to allocate very 289 large blocks of physically contiguous memory is required. 290 291 Don't change if unsure. 292 293if SPARC64 || COMPILE_TEST 294source "kernel/power/Kconfig" 295endif 296 297config CMDLINE_BOOL 298 bool "Default bootloader kernel arguments" 299 depends on SPARC64 300 301config CMDLINE 302 string "Initial kernel command string" 303 depends on CMDLINE_BOOL 304 default "console=ttyS0,9600 root=/dev/sda1" 305 help 306 Say Y here if you want to be able to pass default arguments to 307 the kernel. This will be overridden by the bootloader, if you 308 use one (such as SILO). This is most useful if you want to boot 309 a kernel from TFTP, and want default options to be available 310 with having them passed on the command line. 311 312 NOTE: This option WILL override the PROM bootargs setting! 313 314config SUN_PM 315 bool 316 default y if SPARC32 317 help 318 Enable power management and CPU standby features on supported 319 SPARC platforms. 320 321config SPARC_LED 322 tristate "Sun4m LED driver" 323 depends on SPARC32 324 help 325 This driver toggles the front-panel LED on sun4m systems 326 in a user-specifiable manner. Its state can be probed 327 by reading /proc/led and its blinking mode can be changed 328 via writes to /proc/led 329 330config SPARC_LEON 331 bool "Sparc Leon processor family" 332 depends on SPARC32 333 select USB_EHCI_BIG_ENDIAN_MMIO 334 select USB_EHCI_BIG_ENDIAN_DESC 335 select USB_UHCI_BIG_ENDIAN_MMIO 336 select USB_UHCI_BIG_ENDIAN_DESC 337 help 338 If you say Y here if you are running on a SPARC-LEON processor. 339 The LEON processor is a synthesizable VHDL model of the 340 SPARC-v8 standard. LEON is part of the GRLIB collection of 341 IP cores that are distributed under GPL. GRLIB can be downloaded 342 from www.gaisler.com. You can download a sparc-linux cross-compilation 343 toolchain at www.gaisler.com. 344 345if SPARC_LEON 346menu "U-Boot options" 347 348config UBOOT_LOAD_ADDR 349 hex "uImage Load Address" 350 default 0x40004000 351 help 352 U-Boot kernel load address, the address in physical address space 353 where u-boot will place the Linux kernel before booting it. 354 This address is normally the base address of main memory + 0x4000. 355 356config UBOOT_FLASH_ADDR 357 hex "uImage.o Load Address" 358 default 0x00080000 359 help 360 Optional setting only affecting the uImage.o ELF-image used to 361 download the uImage file to the target using a ELF-loader other than 362 U-Boot. It may for example be used to download an uImage to FLASH with 363 the GRMON utility before even starting u-boot. 364 365config UBOOT_ENTRY_ADDR 366 hex "uImage Entry Address" 367 default 0xf0004000 368 help 369 Do not change this unless you know what you're doing. This is 370 hardcoded by the SPARC32 and LEON port. 371 372 This is the virtual address u-boot jumps to when booting the Linux 373 Kernel. 374 375endmenu 376endif 377 378endmenu 379 380menu "Bus options (PCI etc.)" 381config SBUS 382 bool 383 default y 384 385config SBUSCHAR 386 bool 387 default y 388 389config SUN_LDOMS 390 bool "Sun Logical Domains support" 391 depends on SPARC64 392 help 393 Say Y here is you want to support virtual devices via 394 Logical Domains. 395 396config PCIC_PCI 397 bool 398 depends on PCI && SPARC32 && !SPARC_LEON 399 default y 400 401config LEON_PCI 402 bool 403 depends on PCI && SPARC_LEON 404 default y 405 406config SPARC_GRPCI1 407 bool "GRPCI Host Bridge Support" 408 depends on LEON_PCI 409 default y 410 help 411 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 412 PCI host controller is typically found in GRLIB SPARC32/LEON 413 systems. The driver has one property (all_pci_errors) controlled 414 from the bootloader that makes the GRPCI to generate interrupts 415 on detected PCI Parity and System errors. 416 417config SPARC_GRPCI2 418 bool "GRPCI2 Host Bridge Support" 419 depends on LEON_PCI 420 default y 421 help 422 Say Y here to include the GRPCI2 Host Bridge Driver. 423 424config SUN_OPENPROMFS 425 tristate "Openprom tree appears in /proc/openprom" 426 help 427 If you say Y, the OpenPROM device tree will be available as a 428 virtual file system, which you can mount to /proc/openprom by "mount 429 -t openpromfs none /proc/openprom". 430 431 To compile the /proc/openprom support as a module, choose M here: the 432 module will be called openpromfs. 433 434 Only choose N if you know in advance that you will not need to modify 435 OpenPROM settings on the running system. 436 437# Makefile helpers 438config SPARC64_PCI 439 bool 440 default y 441 depends on SPARC64 && PCI 442 443config SPARC64_PCI_MSI 444 bool 445 default y 446 depends on SPARC64_PCI && PCI_MSI 447 448endmenu 449 450config COMPAT 451 bool 452 depends on SPARC64 453 default y 454 select HAVE_UID16 455 select ARCH_WANT_OLD_COMPAT_IPC 456 select COMPAT_OLD_SIGACTION 457 458config ARCH_CC_CAN_LINK 459 bool 460 default $(cc_can_link_user,-m64) if 64BIT 461 default $(cc_can_link_user,-m32) 462 463config ARCH_USERFLAGS 464 string 465 default "-m64" if 64BIT 466 default "-m32" 467 468source "drivers/sbus/char/Kconfig" 469