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 SERIAL_CONSOLE 331 bool 332 depends on SPARC32 333 default y 334 help 335 If you say Y here, it will be possible to use a serial port as the 336 system console (the system console is the device which receives all 337 kernel messages and warnings and which allows logins in single user 338 mode). This could be useful if some terminal or printer is connected 339 to that serial port. 340 341 Even if you say Y here, the currently visible virtual console 342 (/dev/tty0) will still be used as the system console by default, but 343 you can alter that using a kernel command line option such as 344 "console=ttyS1". (Try "man bootparam" or see the documentation of 345 your boot loader (silo) about how to pass options to the kernel at 346 boot time.) 347 348 If you don't have a graphics card installed and you say Y here, the 349 kernel will automatically use the first serial line, /dev/ttyS0, as 350 system console. 351 352 If unsure, say N. 353 354config SPARC_LEON 355 bool "Sparc Leon processor family" 356 depends on SPARC32 357 select USB_EHCI_BIG_ENDIAN_MMIO 358 select USB_EHCI_BIG_ENDIAN_DESC 359 select USB_UHCI_BIG_ENDIAN_MMIO 360 select USB_UHCI_BIG_ENDIAN_DESC 361 help 362 If you say Y here if you are running on a SPARC-LEON processor. 363 The LEON processor is a synthesizable VHDL model of the 364 SPARC-v8 standard. LEON is part of the GRLIB collection of 365 IP cores that are distributed under GPL. GRLIB can be downloaded 366 from www.gaisler.com. You can download a sparc-linux cross-compilation 367 toolchain at www.gaisler.com. 368 369if SPARC_LEON 370menu "U-Boot options" 371 372config UBOOT_LOAD_ADDR 373 hex "uImage Load Address" 374 default 0x40004000 375 help 376 U-Boot kernel load address, the address in physical address space 377 where u-boot will place the Linux kernel before booting it. 378 This address is normally the base address of main memory + 0x4000. 379 380config UBOOT_FLASH_ADDR 381 hex "uImage.o Load Address" 382 default 0x00080000 383 help 384 Optional setting only affecting the uImage.o ELF-image used to 385 download the uImage file to the target using a ELF-loader other than 386 U-Boot. It may for example be used to download an uImage to FLASH with 387 the GRMON utility before even starting u-boot. 388 389config UBOOT_ENTRY_ADDR 390 hex "uImage Entry Address" 391 default 0xf0004000 392 help 393 Do not change this unless you know what you're doing. This is 394 hardcoded by the SPARC32 and LEON port. 395 396 This is the virtual address u-boot jumps to when booting the Linux 397 Kernel. 398 399endmenu 400endif 401 402endmenu 403 404menu "Bus options (PCI etc.)" 405config SBUS 406 bool 407 default y 408 409config SBUSCHAR 410 bool 411 default y 412 413config SUN_LDOMS 414 bool "Sun Logical Domains support" 415 depends on SPARC64 416 help 417 Say Y here is you want to support virtual devices via 418 Logical Domains. 419 420config PCIC_PCI 421 bool 422 depends on PCI && SPARC32 && !SPARC_LEON 423 default y 424 425config LEON_PCI 426 bool 427 depends on PCI && SPARC_LEON 428 default y 429 430config SPARC_GRPCI1 431 bool "GRPCI Host Bridge Support" 432 depends on LEON_PCI 433 default y 434 help 435 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 436 PCI host controller is typically found in GRLIB SPARC32/LEON 437 systems. The driver has one property (all_pci_errors) controlled 438 from the bootloader that makes the GRPCI to generate interrupts 439 on detected PCI Parity and System errors. 440 441config SPARC_GRPCI2 442 bool "GRPCI2 Host Bridge Support" 443 depends on LEON_PCI 444 default y 445 help 446 Say Y here to include the GRPCI2 Host Bridge Driver. 447 448config SUN_OPENPROMFS 449 tristate "Openprom tree appears in /proc/openprom" 450 help 451 If you say Y, the OpenPROM device tree will be available as a 452 virtual file system, which you can mount to /proc/openprom by "mount 453 -t openpromfs none /proc/openprom". 454 455 To compile the /proc/openprom support as a module, choose M here: the 456 module will be called openpromfs. 457 458 Only choose N if you know in advance that you will not need to modify 459 OpenPROM settings on the running system. 460 461# Makefile helpers 462config SPARC64_PCI 463 bool 464 default y 465 depends on SPARC64 && PCI 466 467config SPARC64_PCI_MSI 468 bool 469 default y 470 depends on SPARC64_PCI && PCI_MSI 471 472endmenu 473 474config COMPAT 475 bool 476 depends on SPARC64 477 default y 478 select HAVE_UID16 479 select ARCH_WANT_OLD_COMPAT_IPC 480 select COMPAT_OLD_SIGACTION 481 482config ARCH_CC_CAN_LINK 483 bool 484 default $(cc_can_link_user,-m64) if 64BIT 485 default $(cc_can_link_user,-m32) 486 487config ARCH_USERFLAGS 488 string 489 default "-m64" if 64BIT 490 default "-m32" 491 492source "drivers/sbus/char/Kconfig" 493