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_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI 17 select ARCH_MIGHT_HAVE_PC_SERIO 18 select DMA_OPS 19 select OF 20 select OF_PROMTREE 21 select HAVE_ASM_MODVERSIONS 22 select HAVE_IDE 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 HAVE_NMI_WATCHDOG if SPARC64 37 select HAVE_CBPF_JIT if SPARC32 38 select HAVE_EBPF_JIT if SPARC64 39 select HAVE_DEBUG_BUGVERBOSE 40 select GENERIC_SMP_IDLE_THREAD 41 select GENERIC_STRNCPY_FROM_USER 42 select GENERIC_STRNLEN_USER 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 SET_FS 53 select TRACE_IRQFLAGS_SUPPORT 54 55config SPARC32 56 def_bool !64BIT 57 select ARCH_32BIT_OFF_T 58 select ARCH_HAS_SYNC_DMA_FOR_CPU 59 select GENERIC_ATOMIC64 60 select CLZ_TAB 61 select HAVE_UID16 62 select OLD_SIGACTION 63 select ZONE_DMA 64 65config SPARC64 66 def_bool 64BIT 67 select HAVE_FUNCTION_TRACER 68 select HAVE_FUNCTION_GRAPH_TRACER 69 select HAVE_KRETPROBES 70 select HAVE_KPROBES 71 select MMU_GATHER_RCU_TABLE_FREE if SMP 72 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 73 select HAVE_DYNAMIC_FTRACE 74 select HAVE_FTRACE_MCOUNT_RECORD 75 select HAVE_SYSCALL_TRACEPOINTS 76 select HAVE_CONTEXT_TRACKING 77 select HAVE_TIF_NOHZ 78 select HAVE_DEBUG_KMEMLEAK 79 select IOMMU_HELPER 80 select SPARSE_IRQ 81 select RTC_DRV_CMOS 82 select RTC_DRV_BQ4802 83 select RTC_DRV_SUN4V 84 select RTC_DRV_STARFIRE 85 select HAVE_PERF_EVENTS 86 select PERF_USE_VMALLOC 87 select ARCH_HAVE_NMI_SAFE_CMPXCHG 88 select HAVE_C_RECORDMCOUNT 89 select HAVE_ARCH_AUDITSYSCALL 90 select ARCH_SUPPORTS_ATOMIC_RMW 91 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 92 select HAVE_NMI 93 select HAVE_REGS_AND_STACK_ACCESS_API 94 select ARCH_USE_QUEUED_RWLOCKS 95 select ARCH_USE_QUEUED_SPINLOCKS 96 select GENERIC_TIME_VSYSCALL 97 select ARCH_CLOCKSOURCE_DATA 98 select ARCH_HAS_PTE_SPECIAL 99 select PCI_DOMAINS if PCI 100 select ARCH_HAS_GIGANTIC_PAGE 101 select HAVE_SOFTIRQ_ON_OWN_STACK 102 103config ARCH_PROC_KCORE_TEXT 104 def_bool y 105 106config CPU_BIG_ENDIAN 107 def_bool y 108 109config ARCH_ATU 110 bool 111 default y if SPARC64 112 113config STACKTRACE_SUPPORT 114 bool 115 default y if SPARC64 116 117config LOCKDEP_SUPPORT 118 bool 119 default y if SPARC64 120 121config ARCH_HIBERNATION_POSSIBLE 122 def_bool y if SPARC64 123 124config AUDIT_ARCH 125 bool 126 default y 127 128config HAVE_SETUP_PER_CPU_AREA 129 def_bool y if SPARC64 130 131config NEED_PER_CPU_EMBED_FIRST_CHUNK 132 def_bool y if SPARC64 133 134config NEED_PER_CPU_PAGE_FIRST_CHUNK 135 def_bool y if SPARC64 136 137config MMU 138 bool 139 default y 140 141config HIGHMEM 142 bool 143 default y if SPARC32 144 select KMAP_LOCAL 145 146config GENERIC_ISA_DMA 147 bool 148 default y if SPARC32 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 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 FORCE_MAX_ZONEORDER 279 int "Maximum zone order" 280 default "13" 281 help 282 The kernel memory allocator divides physically contiguous memory 283 blocks into "zones", where each zone is a power of two number of 284 pages. This option selects the largest power of two that the kernel 285 keeps in the memory allocator. If you need to allocate very large 286 blocks of physically contiguous memory, then you may need to 287 increase this value. 288 289 This config option is actually maximum order plus one. For example, 290 a value of 13 means that the largest free memory block is 2^12 pages. 291 292if SPARC64 293source "kernel/power/Kconfig" 294endif 295 296config SCHED_SMT 297 bool "SMT (Hyperthreading) scheduler support" 298 depends on SPARC64 && SMP 299 default y 300 help 301 SMT scheduler support improves the CPU scheduler's decision making 302 when dealing with SPARC cpus at a cost of slightly increased overhead 303 in some places. If unsure say N here. 304 305config SCHED_MC 306 bool "Multi-core scheduler support" 307 depends on SPARC64 && SMP 308 default y 309 help 310 Multi-core scheduler support improves the CPU scheduler's decision 311 making when dealing with multi-core CPU chips at a cost of slightly 312 increased overhead in some places. If unsure say N here. 313 314config CMDLINE_BOOL 315 bool "Default bootloader kernel arguments" 316 depends on SPARC64 317 318config CMDLINE 319 string "Initial kernel command string" 320 depends on CMDLINE_BOOL 321 default "console=ttyS0,9600 root=/dev/sda1" 322 help 323 Say Y here if you want to be able to pass default arguments to 324 the kernel. This will be overridden by the bootloader, if you 325 use one (such as SILO). This is most useful if you want to boot 326 a kernel from TFTP, and want default options to be available 327 with having them passed on the command line. 328 329 NOTE: This option WILL override the PROM bootargs setting! 330 331config SUN_PM 332 bool 333 default y if SPARC32 334 help 335 Enable power management and CPU standby features on supported 336 SPARC platforms. 337 338config SPARC_LED 339 tristate "Sun4m LED driver" 340 depends on SPARC32 341 help 342 This driver toggles the front-panel LED on sun4m systems 343 in a user-specifiable manner. Its state can be probed 344 by reading /proc/led and its blinking mode can be changed 345 via writes to /proc/led 346 347config SERIAL_CONSOLE 348 bool 349 depends on SPARC32 350 default y 351 help 352 If you say Y here, it will be possible to use a serial port as the 353 system console (the system console is the device which receives all 354 kernel messages and warnings and which allows logins in single user 355 mode). This could be useful if some terminal or printer is connected 356 to that serial port. 357 358 Even if you say Y here, the currently visible virtual console 359 (/dev/tty0) will still be used as the system console by default, but 360 you can alter that using a kernel command line option such as 361 "console=ttyS1". (Try "man bootparam" or see the documentation of 362 your boot loader (silo) about how to pass options to the kernel at 363 boot time.) 364 365 If you don't have a graphics card installed and you say Y here, the 366 kernel will automatically use the first serial line, /dev/ttyS0, as 367 system console. 368 369 If unsure, say N. 370 371config SPARC_LEON 372 bool "Sparc Leon processor family" 373 depends on SPARC32 374 select USB_EHCI_BIG_ENDIAN_MMIO 375 select USB_EHCI_BIG_ENDIAN_DESC 376 select USB_UHCI_BIG_ENDIAN_MMIO 377 select USB_UHCI_BIG_ENDIAN_DESC 378 help 379 If you say Y here if you are running on a SPARC-LEON processor. 380 The LEON processor is a synthesizable VHDL model of the 381 SPARC-v8 standard. LEON is part of the GRLIB collection of 382 IP cores that are distributed under GPL. GRLIB can be downloaded 383 from www.gaisler.com. You can download a sparc-linux cross-compilation 384 toolchain at www.gaisler.com. 385 386if SPARC_LEON 387menu "U-Boot options" 388 389config UBOOT_LOAD_ADDR 390 hex "uImage Load Address" 391 default 0x40004000 392 help 393 U-Boot kernel load address, the address in physical address space 394 where u-boot will place the Linux kernel before booting it. 395 This address is normally the base address of main memory + 0x4000. 396 397config UBOOT_FLASH_ADDR 398 hex "uImage.o Load Address" 399 default 0x00080000 400 help 401 Optional setting only affecting the uImage.o ELF-image used to 402 download the uImage file to the target using a ELF-loader other than 403 U-Boot. It may for example be used to download an uImage to FLASH with 404 the GRMON utility before even starting u-boot. 405 406config UBOOT_ENTRY_ADDR 407 hex "uImage Entry Address" 408 default 0xf0004000 409 help 410 Do not change this unless you know what you're doing. This is 411 hardcoded by the SPARC32 and LEON port. 412 413 This is the virtual address u-boot jumps to when booting the Linux 414 Kernel. 415 416endmenu 417endif 418 419endmenu 420 421menu "Bus options (PCI etc.)" 422config SBUS 423 bool 424 default y 425 426config SBUSCHAR 427 bool 428 default y 429 430config SUN_LDOMS 431 bool "Sun Logical Domains support" 432 depends on SPARC64 433 help 434 Say Y here is you want to support virtual devices via 435 Logical Domains. 436 437config PCIC_PCI 438 bool 439 depends on PCI && SPARC32 && !SPARC_LEON 440 default y 441 442config LEON_PCI 443 bool 444 depends on PCI && SPARC_LEON 445 default y 446 447config SPARC_GRPCI1 448 bool "GRPCI Host Bridge Support" 449 depends on LEON_PCI 450 default y 451 help 452 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 453 PCI host controller is typically found in GRLIB SPARC32/LEON 454 systems. The driver has one property (all_pci_errors) controlled 455 from the bootloader that makes the GRPCI to generate interrupts 456 on detected PCI Parity and System errors. 457 458config SPARC_GRPCI2 459 bool "GRPCI2 Host Bridge Support" 460 depends on LEON_PCI 461 default y 462 help 463 Say Y here to include the GRPCI2 Host Bridge Driver. 464 465config SUN_OPENPROMFS 466 tristate "Openprom tree appears in /proc/openprom" 467 help 468 If you say Y, the OpenPROM device tree will be available as a 469 virtual file system, which you can mount to /proc/openprom by "mount 470 -t openpromfs none /proc/openprom". 471 472 To compile the /proc/openprom support as a module, choose M here: the 473 module will be called openpromfs. 474 475 Only choose N if you know in advance that you will not need to modify 476 OpenPROM settings on the running system. 477 478# Makefile helpers 479config SPARC64_PCI 480 bool 481 default y 482 depends on SPARC64 && PCI 483 484config SPARC64_PCI_MSI 485 bool 486 default y 487 depends on SPARC64_PCI && PCI_MSI 488 489endmenu 490 491config COMPAT 492 bool 493 depends on SPARC64 494 default y 495 select HAVE_UID16 496 select ARCH_WANT_OLD_COMPAT_IPC 497 select COMPAT_OLD_SIGACTION 498 499config SYSVIPC_COMPAT 500 bool 501 depends on COMPAT && SYSVIPC 502 default y 503 504source "drivers/sbus/char/Kconfig" 505