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 HAVE_ARCH_TLB_REMOVE_TABLE if SMP 78 select MMU_GATHER_MERGE_VMAS 79 select MMU_GATHER_NO_FLUSH_CACHE 80 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 81 select HAVE_DYNAMIC_FTRACE 82 select HAVE_PAGE_SIZE_8KB 83 select HAVE_SYSCALL_TRACEPOINTS 84 select HAVE_CONTEXT_TRACKING_USER 85 select HAVE_TIF_NOHZ 86 select HAVE_DEBUG_KMEMLEAK 87 select IOMMU_HELPER 88 select SPARSE_IRQ 89 select RTC_DRV_CMOS 90 select RTC_DRV_BQ4802 91 select RTC_DRV_SUN4V 92 select RTC_DRV_STARFIRE 93 select HAVE_PERF_EVENTS 94 select PERF_USE_VMALLOC 95 select ARCH_HAVE_NMI_SAFE_CMPXCHG 96 select HAVE_C_RECORDMCOUNT 97 select HAVE_ARCH_AUDITSYSCALL 98 select ARCH_SUPPORTS_ATOMIC_RMW 99 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 100 select ARCH_SUPPORTS_HUGETLBFS 101 select HAVE_NMI 102 select HAVE_REGS_AND_STACK_ACCESS_API 103 select ARCH_USE_QUEUED_RWLOCKS 104 select ARCH_USE_QUEUED_SPINLOCKS 105 select GENERIC_TIME_VSYSCALL 106 select ARCH_CLOCKSOURCE_DATA 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 118config ARCH_PROC_KCORE_TEXT 119 def_bool y 120 121config CPU_BIG_ENDIAN 122 def_bool y 123 124config STACKTRACE_SUPPORT 125 bool 126 default y if SPARC64 127 128config LOCKDEP_SUPPORT 129 bool 130 default y if SPARC64 131 132config ARCH_HIBERNATION_POSSIBLE 133 def_bool y if SPARC64 134 135config AUDIT_ARCH 136 bool 137 default y 138 139config MMU 140 bool 141 default y 142 143config HIGHMEM 144 bool 145 default y if SPARC32 146 select KMAP_LOCAL 147 148config PGTABLE_LEVELS 149 default 4 if 64BIT 150 default 3 151 152config ARCH_SUPPORTS_UPROBES 153 def_bool y if SPARC64 154 155menu "Processor type and features" 156 157config SMP 158 bool "Symmetric multi-processing support" 159 help 160 This enables support for systems with more than one CPU. If you have 161 a system with only one CPU, say N. If you have a system with more 162 than one CPU, say Y. 163 164 If you say N here, the kernel will run on uni- and multiprocessor 165 machines, but will use only one CPU of a multiprocessor machine. If 166 you say Y here, the kernel will run on many, but not all, 167 uniprocessor machines. On a uniprocessor machine, the kernel 168 will run faster if you say N here. 169 170 People using multiprocessor machines who say Y here should also say 171 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 172 Management" code will be disabled if you say Y here. 173 174 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 175 available at <https://www.tldp.org/docs.html#howto>. 176 177 If you don't know what to do here, say N. 178 179config NR_CPUS 180 int "Maximum number of CPUs" 181 depends on SMP 182 range 2 32 if SPARC32 183 range 2 4096 if SPARC64 184 default 32 if SPARC32 185 default 4096 if SPARC64 186 187source "kernel/Kconfig.hz" 188 189config GENERIC_HWEIGHT 190 bool 191 default y 192 193config GENERIC_CALIBRATE_DELAY 194 bool 195 default y 196 197config ARCH_MAY_HAVE_PC_FDC 198 bool 199 default y 200 201config EMULATED_CMPXCHG 202 bool 203 default y if SPARC32 204 help 205 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 206 is emulated, and therefore it is not completely atomic. 207 208# Makefile helpers 209config SPARC32_SMP 210 bool 211 default y 212 depends on SPARC32 && SMP 213 214config SPARC64_SMP 215 bool 216 default y 217 depends on SPARC64 && SMP 218 219config EARLYFB 220 bool "Support for early boot text console" 221 default y 222 depends on SPARC64 223 select FONT_SUN8x16 224 select FONT_SUPPORT 225 help 226 Say Y here to enable a faster early framebuffer boot console. 227 228config HOTPLUG_CPU 229 bool "Support for hot-pluggable CPUs" 230 depends on SPARC64 && SMP 231 help 232 Say Y here to experiment with turning CPUs off and on. CPUs 233 can be controlled through /sys/devices/system/cpu/cpu#. 234 Say N if you want to disable CPU hotplug. 235 236if SPARC64 237source "drivers/cpufreq/Kconfig" 238endif 239 240config US3_MC 241 tristate "UltraSPARC-III Memory Controller driver" 242 depends on SPARC64 243 default y 244 help 245 This adds a driver for the UltraSPARC-III memory controller. 246 Loading this driver allows exact mnemonic strings to be 247 printed in the event of a memory error, so that the faulty DIMM 248 on the motherboard can be matched to the error. 249 250 If in doubt, say Y, as this information can be very useful. 251 252# Global things across all Sun machines. 253config GENERIC_LOCKBREAK 254 bool 255 default y 256 depends on SPARC64 && SMP && PREEMPTION 257 258config NUMA 259 bool "NUMA support" 260 depends on SPARC64 && SMP 261 262config NODES_SHIFT 263 int "Maximum NUMA Nodes (as a power of 2)" 264 range 4 5 if SPARC64 265 default "5" 266 depends on NUMA 267 help 268 Specify the maximum number of NUMA Nodes available on the target 269 system. Increases memory reserved to accommodate various tables. 270 271config ARCH_SPARSEMEM_ENABLE 272 def_bool y if SPARC64 273 select SPARSEMEM_VMEMMAP_ENABLE 274 275config ARCH_SPARSEMEM_DEFAULT 276 def_bool y if SPARC64 277 278config ARCH_FORCE_MAX_ORDER 279 int "Order of maximal physically contiguous allocations" 280 default "12" 281 help 282 The kernel page allocator limits the size of maximal physically 283 contiguous allocations. The limit is called MAX_PAGE_ORDER and it 284 defines the maximal power of two of number of pages that can be 285 allocated as a single contiguous block. This option allows 286 overriding the default setting when ability to allocate very 287 large blocks of physically contiguous memory is required. 288 289 Don't change if unsure. 290 291if SPARC64 || COMPILE_TEST 292source "kernel/power/Kconfig" 293endif 294 295config CMDLINE_BOOL 296 bool "Default bootloader kernel arguments" 297 depends on SPARC64 298 299config CMDLINE 300 string "Initial kernel command string" 301 depends on CMDLINE_BOOL 302 default "console=ttyS0,9600 root=/dev/sda1" 303 help 304 Say Y here if you want to be able to pass default arguments to 305 the kernel. This will be overridden by the bootloader, if you 306 use one (such as SILO). This is most useful if you want to boot 307 a kernel from TFTP, and want default options to be available 308 with having them passed on the command line. 309 310 NOTE: This option WILL override the PROM bootargs setting! 311 312config SUN_PM 313 bool 314 default y if SPARC32 315 help 316 Enable power management and CPU standby features on supported 317 SPARC platforms. 318 319config SPARC_LED 320 tristate "Sun4m LED driver" 321 depends on SPARC32 322 help 323 This driver toggles the front-panel LED on sun4m systems 324 in a user-specifiable manner. Its state can be probed 325 by reading /proc/led and its blinking mode can be changed 326 via writes to /proc/led 327 328config SERIAL_CONSOLE 329 bool 330 depends on SPARC32 331 default y 332 help 333 If you say Y here, it will be possible to use a serial port as the 334 system console (the system console is the device which receives all 335 kernel messages and warnings and which allows logins in single user 336 mode). This could be useful if some terminal or printer is connected 337 to that serial port. 338 339 Even if you say Y here, the currently visible virtual console 340 (/dev/tty0) will still be used as the system console by default, but 341 you can alter that using a kernel command line option such as 342 "console=ttyS1". (Try "man bootparam" or see the documentation of 343 your boot loader (silo) about how to pass options to the kernel at 344 boot time.) 345 346 If you don't have a graphics card installed and you say Y here, the 347 kernel will automatically use the first serial line, /dev/ttyS0, as 348 system console. 349 350 If unsure, say N. 351 352config SPARC_LEON 353 bool "Sparc Leon processor family" 354 depends on SPARC32 355 select USB_EHCI_BIG_ENDIAN_MMIO 356 select USB_EHCI_BIG_ENDIAN_DESC 357 select USB_UHCI_BIG_ENDIAN_MMIO 358 select USB_UHCI_BIG_ENDIAN_DESC 359 help 360 If you say Y here if you are running on a SPARC-LEON processor. 361 The LEON processor is a synthesizable VHDL model of the 362 SPARC-v8 standard. LEON is part of the GRLIB collection of 363 IP cores that are distributed under GPL. GRLIB can be downloaded 364 from www.gaisler.com. You can download a sparc-linux cross-compilation 365 toolchain at www.gaisler.com. 366 367if SPARC_LEON 368menu "U-Boot options" 369 370config UBOOT_LOAD_ADDR 371 hex "uImage Load Address" 372 default 0x40004000 373 help 374 U-Boot kernel load address, the address in physical address space 375 where u-boot will place the Linux kernel before booting it. 376 This address is normally the base address of main memory + 0x4000. 377 378config UBOOT_FLASH_ADDR 379 hex "uImage.o Load Address" 380 default 0x00080000 381 help 382 Optional setting only affecting the uImage.o ELF-image used to 383 download the uImage file to the target using a ELF-loader other than 384 U-Boot. It may for example be used to download an uImage to FLASH with 385 the GRMON utility before even starting u-boot. 386 387config UBOOT_ENTRY_ADDR 388 hex "uImage Entry Address" 389 default 0xf0004000 390 help 391 Do not change this unless you know what you're doing. This is 392 hardcoded by the SPARC32 and LEON port. 393 394 This is the virtual address u-boot jumps to when booting the Linux 395 Kernel. 396 397endmenu 398endif 399 400endmenu 401 402menu "Bus options (PCI etc.)" 403config SBUS 404 bool 405 default y 406 407config SBUSCHAR 408 bool 409 default y 410 411config SUN_LDOMS 412 bool "Sun Logical Domains support" 413 depends on SPARC64 414 help 415 Say Y here is you want to support virtual devices via 416 Logical Domains. 417 418config PCIC_PCI 419 bool 420 depends on PCI && SPARC32 && !SPARC_LEON 421 default y 422 423config LEON_PCI 424 bool 425 depends on PCI && SPARC_LEON 426 default y 427 428config SPARC_GRPCI1 429 bool "GRPCI Host Bridge Support" 430 depends on LEON_PCI 431 default y 432 help 433 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 434 PCI host controller is typically found in GRLIB SPARC32/LEON 435 systems. The driver has one property (all_pci_errors) controlled 436 from the bootloader that makes the GRPCI to generate interrupts 437 on detected PCI Parity and System errors. 438 439config SPARC_GRPCI2 440 bool "GRPCI2 Host Bridge Support" 441 depends on LEON_PCI 442 default y 443 help 444 Say Y here to include the GRPCI2 Host Bridge Driver. 445 446config SUN_OPENPROMFS 447 tristate "Openprom tree appears in /proc/openprom" 448 help 449 If you say Y, the OpenPROM device tree will be available as a 450 virtual file system, which you can mount to /proc/openprom by "mount 451 -t openpromfs none /proc/openprom". 452 453 To compile the /proc/openprom support as a module, choose M here: the 454 module will be called openpromfs. 455 456 Only choose N if you know in advance that you will not need to modify 457 OpenPROM settings on the running system. 458 459# Makefile helpers 460config SPARC64_PCI 461 bool 462 default y 463 depends on SPARC64 && PCI 464 465config SPARC64_PCI_MSI 466 bool 467 default y 468 depends on SPARC64_PCI && PCI_MSI 469 470endmenu 471 472config COMPAT 473 bool 474 depends on SPARC64 475 default y 476 select HAVE_UID16 477 select ARCH_WANT_OLD_COMPAT_IPC 478 select COMPAT_OLD_SIGACTION 479 480source "drivers/sbus/char/Kconfig" 481