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 116config ARCH_PROC_KCORE_TEXT 117 def_bool y 118 119config CPU_BIG_ENDIAN 120 def_bool y 121 122config STACKTRACE_SUPPORT 123 bool 124 default y if SPARC64 125 126config LOCKDEP_SUPPORT 127 bool 128 default y if SPARC64 129 130config ARCH_HIBERNATION_POSSIBLE 131 def_bool y if SPARC64 132 133config AUDIT_ARCH 134 bool 135 default y 136 137config MMU 138 bool 139 default y 140 141config HIGHMEM 142 bool 143 default y if SPARC32 144 select KMAP_LOCAL 145 146config PGTABLE_LEVELS 147 default 4 if 64BIT 148 default 3 149 150config ARCH_SUPPORTS_UPROBES 151 def_bool y if SPARC64 152 153menu "Processor type and features" 154 155config SMP 156 bool "Symmetric multi-processing support" 157 help 158 This enables support for systems with more than one CPU. If you have 159 a system with only one CPU, say N. If you have a system with more 160 than one CPU, say Y. 161 162 If you say N here, the kernel will run on uni- and multiprocessor 163 machines, but will use only one CPU of a multiprocessor machine. If 164 you say Y here, the kernel will run on many, but not all, 165 uniprocessor machines. On a uniprocessor machine, the kernel 166 will run faster if you say N here. 167 168 People using multiprocessor machines who say Y here should also say 169 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 170 Management" code will be disabled if you say Y here. 171 172 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 173 available at <https://www.tldp.org/docs.html#howto>. 174 175 If you don't know what to do here, say N. 176 177config NR_CPUS 178 int "Maximum number of CPUs" 179 depends on SMP 180 range 2 32 if SPARC32 181 range 2 4096 if SPARC64 182 default 32 if SPARC32 183 default 4096 if SPARC64 184 185source "kernel/Kconfig.hz" 186 187config GENERIC_HWEIGHT 188 bool 189 default y 190 191config GENERIC_CALIBRATE_DELAY 192 bool 193 default y 194 195config ARCH_MAY_HAVE_PC_FDC 196 bool 197 default y 198 199config EMULATED_CMPXCHG 200 bool 201 default y if SPARC32 202 help 203 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 204 is emulated, and therefore it is not completely atomic. 205 206# Makefile helpers 207config SPARC32_SMP 208 bool 209 default y 210 depends on SPARC32 && SMP 211 212config SPARC64_SMP 213 bool 214 default y 215 depends on SPARC64 && SMP 216 217config EARLYFB 218 bool "Support for early boot text console" 219 default y 220 depends on SPARC64 221 select FONT_SUN8x16 222 select FONT_SUPPORT 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 ARCH_FORCE_MAX_ORDER 277 int "Order of maximal physically contiguous allocations" 278 default "12" 279 help 280 The kernel page allocator limits the size of maximal physically 281 contiguous allocations. The limit is called MAX_PAGE_ORDER and it 282 defines the maximal power of two of number of pages that can be 283 allocated as a single contiguous block. This option allows 284 overriding the default setting when ability to allocate very 285 large blocks of physically contiguous memory is required. 286 287 Don't change if unsure. 288 289if SPARC64 || COMPILE_TEST 290source "kernel/power/Kconfig" 291endif 292 293config CMDLINE_BOOL 294 bool "Default bootloader kernel arguments" 295 depends on SPARC64 296 297config CMDLINE 298 string "Initial kernel command string" 299 depends on CMDLINE_BOOL 300 default "console=ttyS0,9600 root=/dev/sda1" 301 help 302 Say Y here if you want to be able to pass default arguments to 303 the kernel. This will be overridden by the bootloader, if you 304 use one (such as SILO). This is most useful if you want to boot 305 a kernel from TFTP, and want default options to be available 306 with having them passed on the command line. 307 308 NOTE: This option WILL override the PROM bootargs setting! 309 310config SUN_PM 311 bool 312 default y if SPARC32 313 help 314 Enable power management and CPU standby features on supported 315 SPARC platforms. 316 317config SPARC_LED 318 tristate "Sun4m LED driver" 319 depends on SPARC32 320 help 321 This driver toggles the front-panel LED on sun4m systems 322 in a user-specifiable manner. Its state can be probed 323 by reading /proc/led and its blinking mode can be changed 324 via writes to /proc/led 325 326config SERIAL_CONSOLE 327 bool 328 depends on SPARC32 329 default y 330 help 331 If you say Y here, it will be possible to use a serial port as the 332 system console (the system console is the device which receives all 333 kernel messages and warnings and which allows logins in single user 334 mode). This could be useful if some terminal or printer is connected 335 to that serial port. 336 337 Even if you say Y here, the currently visible virtual console 338 (/dev/tty0) will still be used as the system console by default, but 339 you can alter that using a kernel command line option such as 340 "console=ttyS1". (Try "man bootparam" or see the documentation of 341 your boot loader (silo) about how to pass options to the kernel at 342 boot time.) 343 344 If you don't have a graphics card installed and you say Y here, the 345 kernel will automatically use the first serial line, /dev/ttyS0, as 346 system console. 347 348 If unsure, say N. 349 350config SPARC_LEON 351 bool "Sparc Leon processor family" 352 depends on SPARC32 353 select USB_EHCI_BIG_ENDIAN_MMIO 354 select USB_EHCI_BIG_ENDIAN_DESC 355 select USB_UHCI_BIG_ENDIAN_MMIO 356 select USB_UHCI_BIG_ENDIAN_DESC 357 help 358 If you say Y here if you are running on a SPARC-LEON processor. 359 The LEON processor is a synthesizable VHDL model of the 360 SPARC-v8 standard. LEON is part of the GRLIB collection of 361 IP cores that are distributed under GPL. GRLIB can be downloaded 362 from www.gaisler.com. You can download a sparc-linux cross-compilation 363 toolchain at www.gaisler.com. 364 365if SPARC_LEON 366menu "U-Boot options" 367 368config UBOOT_LOAD_ADDR 369 hex "uImage Load Address" 370 default 0x40004000 371 help 372 U-Boot kernel load address, the address in physical address space 373 where u-boot will place the Linux kernel before booting it. 374 This address is normally the base address of main memory + 0x4000. 375 376config UBOOT_FLASH_ADDR 377 hex "uImage.o Load Address" 378 default 0x00080000 379 help 380 Optional setting only affecting the uImage.o ELF-image used to 381 download the uImage file to the target using a ELF-loader other than 382 U-Boot. It may for example be used to download an uImage to FLASH with 383 the GRMON utility before even starting u-boot. 384 385config UBOOT_ENTRY_ADDR 386 hex "uImage Entry Address" 387 default 0xf0004000 388 help 389 Do not change this unless you know what you're doing. This is 390 hardcoded by the SPARC32 and LEON port. 391 392 This is the virtual address u-boot jumps to when booting the Linux 393 Kernel. 394 395endmenu 396endif 397 398endmenu 399 400menu "Bus options (PCI etc.)" 401config SBUS 402 bool 403 default y 404 405config SBUSCHAR 406 bool 407 default y 408 409config SUN_LDOMS 410 bool "Sun Logical Domains support" 411 depends on SPARC64 412 help 413 Say Y here is you want to support virtual devices via 414 Logical Domains. 415 416config PCIC_PCI 417 bool 418 depends on PCI && SPARC32 && !SPARC_LEON 419 default y 420 421config LEON_PCI 422 bool 423 depends on PCI && SPARC_LEON 424 default y 425 426config SPARC_GRPCI1 427 bool "GRPCI Host Bridge Support" 428 depends on LEON_PCI 429 default y 430 help 431 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 432 PCI host controller is typically found in GRLIB SPARC32/LEON 433 systems. The driver has one property (all_pci_errors) controlled 434 from the bootloader that makes the GRPCI to generate interrupts 435 on detected PCI Parity and System errors. 436 437config SPARC_GRPCI2 438 bool "GRPCI2 Host Bridge Support" 439 depends on LEON_PCI 440 default y 441 help 442 Say Y here to include the GRPCI2 Host Bridge Driver. 443 444config SUN_OPENPROMFS 445 tristate "Openprom tree appears in /proc/openprom" 446 help 447 If you say Y, the OpenPROM device tree will be available as a 448 virtual file system, which you can mount to /proc/openprom by "mount 449 -t openpromfs none /proc/openprom". 450 451 To compile the /proc/openprom support as a module, choose M here: the 452 module will be called openpromfs. 453 454 Only choose N if you know in advance that you will not need to modify 455 OpenPROM settings on the running system. 456 457# Makefile helpers 458config SPARC64_PCI 459 bool 460 default y 461 depends on SPARC64 && PCI 462 463config SPARC64_PCI_MSI 464 bool 465 default y 466 depends on SPARC64_PCI && PCI_MSI 467 468endmenu 469 470config COMPAT 471 bool 472 depends on SPARC64 473 default y 474 select HAVE_UID16 475 select ARCH_WANT_OLD_COMPAT_IPC 476 select COMPAT_OLD_SIGACTION 477 478source "drivers/sbus/char/Kconfig" 479