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 OF 19 select OF_PROMTREE 20 select HAVE_ASM_MODVERSIONS 21 select HAVE_IDE 22 select HAVE_OPROFILE 23 select HAVE_ARCH_KGDB if !SMP || SPARC64 24 select HAVE_ARCH_TRACEHOOK 25 select HAVE_EXIT_THREAD 26 select HAVE_PCI 27 select SYSCTL_EXCEPTION_TRACE 28 select RTC_CLASS 29 select RTC_DRV_M48T59 30 select RTC_SYSTOHC 31 select HAVE_ARCH_JUMP_LABEL if SPARC64 32 select GENERIC_IRQ_SHOW 33 select ARCH_WANT_IPC_PARSE_VERSION 34 select GENERIC_PCI_IOMAP 35 select HAVE_NMI_WATCHDOG if SPARC64 36 select HAVE_CBPF_JIT if SPARC32 37 select HAVE_EBPF_JIT if SPARC64 38 select HAVE_DEBUG_BUGVERBOSE 39 select GENERIC_SMP_IDLE_THREAD 40 select GENERIC_CLOCKEVENTS 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 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 52config SPARC32 53 def_bool !64BIT 54 select ARCH_32BIT_OFF_T 55 select ARCH_HAS_SYNC_DMA_FOR_CPU 56 select GENERIC_ATOMIC64 57 select CLZ_TAB 58 select HAVE_UID16 59 select OLD_SIGACTION 60 61config SPARC64 62 def_bool 64BIT 63 select HAVE_FUNCTION_TRACER 64 select HAVE_FUNCTION_GRAPH_TRACER 65 select HAVE_KRETPROBES 66 select HAVE_KPROBES 67 select HAVE_RCU_TABLE_FREE if SMP 68 select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE 69 select HAVE_MEMBLOCK_NODE_MAP 70 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 71 select HAVE_DYNAMIC_FTRACE 72 select HAVE_FTRACE_MCOUNT_RECORD 73 select HAVE_SYSCALL_TRACEPOINTS 74 select HAVE_CONTEXT_TRACKING 75 select HAVE_DEBUG_KMEMLEAK 76 select IOMMU_HELPER 77 select SPARSE_IRQ 78 select RTC_DRV_CMOS 79 select RTC_DRV_BQ4802 80 select RTC_DRV_SUN4V 81 select RTC_DRV_STARFIRE 82 select HAVE_PERF_EVENTS 83 select PERF_USE_VMALLOC 84 select IRQ_PREFLOW_FASTEOI 85 select ARCH_HAVE_NMI_SAFE_CMPXCHG 86 select HAVE_C_RECORDMCOUNT 87 select HAVE_ARCH_AUDITSYSCALL 88 select ARCH_SUPPORTS_ATOMIC_RMW 89 select HAVE_NMI 90 select HAVE_REGS_AND_STACK_ACCESS_API 91 select ARCH_USE_QUEUED_RWLOCKS 92 select ARCH_USE_QUEUED_SPINLOCKS 93 select GENERIC_TIME_VSYSCALL 94 select ARCH_CLOCKSOURCE_DATA 95 select ARCH_HAS_PTE_SPECIAL 96 select PCI_DOMAINS if PCI 97 select ARCH_HAS_GIGANTIC_PAGE 98 99config ARCH_DEFCONFIG 100 string 101 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 102 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 103 104config ARCH_PROC_KCORE_TEXT 105 def_bool y 106 107config CPU_BIG_ENDIAN 108 def_bool y 109 110config ARCH_ATU 111 bool 112 default y if SPARC64 113 114config STACKTRACE_SUPPORT 115 bool 116 default y if SPARC64 117 118config LOCKDEP_SUPPORT 119 bool 120 default y if SPARC64 121 122config ARCH_HIBERNATION_POSSIBLE 123 def_bool y if SPARC64 124 125config AUDIT_ARCH 126 bool 127 default y 128 129config HAVE_SETUP_PER_CPU_AREA 130 def_bool y if SPARC64 131 132config NEED_PER_CPU_EMBED_FIRST_CHUNK 133 def_bool y if SPARC64 134 135config NEED_PER_CPU_PAGE_FIRST_CHUNK 136 def_bool y if SPARC64 137 138config MMU 139 bool 140 default y 141 142config HIGHMEM 143 bool 144 default y if SPARC32 145 146config ZONE_DMA 147 bool 148 default y if SPARC32 149 150config GENERIC_ISA_DMA 151 bool 152 default y if SPARC32 153 154config ARCH_SUPPORTS_DEBUG_PAGEALLOC 155 def_bool y if SPARC64 156 157config PGTABLE_LEVELS 158 default 4 if 64BIT 159 default 3 160 161config ARCH_SUPPORTS_UPROBES 162 def_bool y if SPARC64 163 164menu "Processor type and features" 165 166config SMP 167 bool "Symmetric multi-processing support" 168 ---help--- 169 This enables support for systems with more than one CPU. If you have 170 a system with only one CPU, say N. If you have a system with more 171 than one CPU, say Y. 172 173 If you say N here, the kernel will run on uni- and multiprocessor 174 machines, but will use only one CPU of a multiprocessor machine. If 175 you say Y here, the kernel will run on many, but not all, 176 uniprocessor machines. On a uniprocessor machine, the kernel 177 will run faster if you say N here. 178 179 People using multiprocessor machines who say Y here should also say 180 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 181 Management" code will be disabled if you say Y here. 182 183 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 184 available at <http://www.tldp.org/docs.html#howto>. 185 186 If you don't know what to do here, say N. 187 188config NR_CPUS 189 int "Maximum number of CPUs" 190 depends on SMP 191 range 2 32 if SPARC32 192 range 2 4096 if SPARC64 193 default 32 if SPARC32 194 default 4096 if SPARC64 195 196source "kernel/Kconfig.hz" 197 198config GENERIC_HWEIGHT 199 bool 200 default y 201 202config GENERIC_CALIBRATE_DELAY 203 bool 204 default y 205 206config ARCH_MAY_HAVE_PC_FDC 207 bool 208 default y 209 210config EMULATED_CMPXCHG 211 bool 212 default y if SPARC32 213 help 214 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 215 is emulated, and therefore it is not completely atomic. 216 217# Makefile helpers 218config SPARC32_SMP 219 bool 220 default y 221 depends on SPARC32 && SMP 222 223config SPARC64_SMP 224 bool 225 default y 226 depends on SPARC64 && SMP 227 228config EARLYFB 229 bool "Support for early boot text console" 230 default y 231 depends on SPARC64 232 help 233 Say Y here to enable a faster early framebuffer boot console. 234 235config SECCOMP 236 bool "Enable seccomp to safely compute untrusted bytecode" 237 depends on SPARC64 && PROC_FS 238 default y 239 help 240 This kernel feature is useful for number crunching applications 241 that may need to compute untrusted bytecode during their 242 execution. By using pipes or other transports made available to 243 the process as file descriptors supporting the read/write 244 syscalls, it's possible to isolate those applications in 245 their own address space using seccomp. Once seccomp is 246 enabled via /proc/<pid>/seccomp, it cannot be disabled 247 and the task is only allowed to execute a few safe syscalls 248 defined by each seccomp mode. 249 250 If unsure, say Y. Only embedded should say N here. 251 252config HOTPLUG_CPU 253 bool "Support for hot-pluggable CPUs" 254 depends on SPARC64 && SMP 255 help 256 Say Y here to experiment with turning CPUs off and on. CPUs 257 can be controlled through /sys/devices/system/cpu/cpu#. 258 Say N if you want to disable CPU hotplug. 259 260if SPARC64 261source "drivers/cpufreq/Kconfig" 262endif 263 264config US3_MC 265 tristate "UltraSPARC-III Memory Controller driver" 266 depends on SPARC64 267 default y 268 help 269 This adds a driver for the UltraSPARC-III memory controller. 270 Loading this driver allows exact mnemonic strings to be 271 printed in the event of a memory error, so that the faulty DIMM 272 on the motherboard can be matched to the error. 273 274 If in doubt, say Y, as this information can be very useful. 275 276# Global things across all Sun machines. 277config GENERIC_LOCKBREAK 278 bool 279 default y 280 depends on SPARC64 && SMP && PREEMPT 281 282config NUMA 283 bool "NUMA support" 284 depends on SPARC64 && SMP 285 286config NODES_SHIFT 287 int "Maximum NUMA Nodes (as a power of 2)" 288 range 4 5 if SPARC64 289 default "5" 290 depends on NEED_MULTIPLE_NODES 291 help 292 Specify the maximum number of NUMA Nodes available on the target 293 system. Increases memory reserved to accommodate various tables. 294 295# Some NUMA nodes have memory ranges that span 296# other nodes. Even though a pfn is valid and 297# between a node's start and end pfns, it may not 298# reside on that node. See memmap_init_zone() 299# for details. 300config NODES_SPAN_OTHER_NODES 301 def_bool y 302 depends on NEED_MULTIPLE_NODES 303 304config ARCH_SPARSEMEM_ENABLE 305 def_bool y if SPARC64 306 select SPARSEMEM_VMEMMAP_ENABLE 307 308config ARCH_SPARSEMEM_DEFAULT 309 def_bool y if SPARC64 310 311config FORCE_MAX_ZONEORDER 312 int "Maximum zone order" 313 default "13" 314 help 315 The kernel memory allocator divides physically contiguous memory 316 blocks into "zones", where each zone is a power of two number of 317 pages. This option selects the largest power of two that the kernel 318 keeps in the memory allocator. If you need to allocate very large 319 blocks of physically contiguous memory, then you may need to 320 increase this value. 321 322 This config option is actually maximum order plus one. For example, 323 a value of 13 means that the largest free memory block is 2^12 pages. 324 325if SPARC64 326source "kernel/power/Kconfig" 327endif 328 329config SCHED_SMT 330 bool "SMT (Hyperthreading) scheduler support" 331 depends on SPARC64 && SMP 332 default y 333 help 334 SMT scheduler support improves the CPU scheduler's decision making 335 when dealing with SPARC cpus at a cost of slightly increased overhead 336 in some places. If unsure say N here. 337 338config SCHED_MC 339 bool "Multi-core scheduler support" 340 depends on SPARC64 && SMP 341 default y 342 help 343 Multi-core scheduler support improves the CPU scheduler's decision 344 making when dealing with multi-core CPU chips at a cost of slightly 345 increased overhead in some places. If unsure say N here. 346 347config CMDLINE_BOOL 348 bool "Default bootloader kernel arguments" 349 depends on SPARC64 350 351config CMDLINE 352 string "Initial kernel command string" 353 depends on CMDLINE_BOOL 354 default "console=ttyS0,9600 root=/dev/sda1" 355 help 356 Say Y here if you want to be able to pass default arguments to 357 the kernel. This will be overridden by the bootloader, if you 358 use one (such as SILO). This is most useful if you want to boot 359 a kernel from TFTP, and want default options to be available 360 with having them passed on the command line. 361 362 NOTE: This option WILL override the PROM bootargs setting! 363 364config SUN_PM 365 bool 366 default y if SPARC32 367 help 368 Enable power management and CPU standby features on supported 369 SPARC platforms. 370 371config SPARC_LED 372 tristate "Sun4m LED driver" 373 depends on SPARC32 374 help 375 This driver toggles the front-panel LED on sun4m systems 376 in a user-specifiable manner. Its state can be probed 377 by reading /proc/led and its blinking mode can be changed 378 via writes to /proc/led 379 380config SERIAL_CONSOLE 381 bool 382 depends on SPARC32 383 default y 384 ---help--- 385 If you say Y here, it will be possible to use a serial port as the 386 system console (the system console is the device which receives all 387 kernel messages and warnings and which allows logins in single user 388 mode). This could be useful if some terminal or printer is connected 389 to that serial port. 390 391 Even if you say Y here, the currently visible virtual console 392 (/dev/tty0) will still be used as the system console by default, but 393 you can alter that using a kernel command line option such as 394 "console=ttyS1". (Try "man bootparam" or see the documentation of 395 your boot loader (silo) about how to pass options to the kernel at 396 boot time.) 397 398 If you don't have a graphics card installed and you say Y here, the 399 kernel will automatically use the first serial line, /dev/ttyS0, as 400 system console. 401 402 If unsure, say N. 403 404config SPARC_LEON 405 bool "Sparc Leon processor family" 406 depends on SPARC32 407 select USB_EHCI_BIG_ENDIAN_MMIO 408 select USB_EHCI_BIG_ENDIAN_DESC 409 select USB_UHCI_BIG_ENDIAN_MMIO 410 select USB_UHCI_BIG_ENDIAN_DESC 411 ---help--- 412 If you say Y here if you are running on a SPARC-LEON processor. 413 The LEON processor is a synthesizable VHDL model of the 414 SPARC-v8 standard. LEON is part of the GRLIB collection of 415 IP cores that are distributed under GPL. GRLIB can be downloaded 416 from www.gaisler.com. You can download a sparc-linux cross-compilation 417 toolchain at www.gaisler.com. 418 419if SPARC_LEON 420menu "U-Boot options" 421 422config UBOOT_LOAD_ADDR 423 hex "uImage Load Address" 424 default 0x40004000 425 ---help--- 426 U-Boot kernel load address, the address in physical address space 427 where u-boot will place the Linux kernel before booting it. 428 This address is normally the base address of main memory + 0x4000. 429 430config UBOOT_FLASH_ADDR 431 hex "uImage.o Load Address" 432 default 0x00080000 433 ---help--- 434 Optional setting only affecting the uImage.o ELF-image used to 435 download the uImage file to the target using a ELF-loader other than 436 U-Boot. It may for example be used to download an uImage to FLASH with 437 the GRMON utility before even starting u-boot. 438 439config UBOOT_ENTRY_ADDR 440 hex "uImage Entry Address" 441 default 0xf0004000 442 ---help--- 443 Do not change this unless you know what you're doing. This is 444 hardcoded by the SPARC32 and LEON port. 445 446 This is the virtual address u-boot jumps to when booting the Linux 447 Kernel. 448 449endmenu 450endif 451 452endmenu 453 454menu "Bus options (PCI etc.)" 455config SBUS 456 bool 457 default y 458 459config SBUSCHAR 460 bool 461 default y 462 463config SUN_LDOMS 464 bool "Sun Logical Domains support" 465 depends on SPARC64 466 help 467 Say Y here is you want to support virtual devices via 468 Logical Domains. 469 470config PCIC_PCI 471 bool 472 depends on PCI && SPARC32 && !SPARC_LEON 473 default y 474 475config LEON_PCI 476 bool 477 depends on PCI && SPARC_LEON 478 default y 479 480config SPARC_GRPCI1 481 bool "GRPCI Host Bridge Support" 482 depends on LEON_PCI 483 default y 484 help 485 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 486 PCI host controller is typically found in GRLIB SPARC32/LEON 487 systems. The driver has one property (all_pci_errors) controlled 488 from the bootloader that makes the GRPCI to generate interrupts 489 on detected PCI Parity and System errors. 490 491config SPARC_GRPCI2 492 bool "GRPCI2 Host Bridge Support" 493 depends on LEON_PCI 494 default y 495 help 496 Say Y here to include the GRPCI2 Host Bridge Driver. 497 498config SUN_OPENPROMFS 499 tristate "Openprom tree appears in /proc/openprom" 500 help 501 If you say Y, the OpenPROM device tree will be available as a 502 virtual file system, which you can mount to /proc/openprom by "mount 503 -t openpromfs none /proc/openprom". 504 505 To compile the /proc/openprom support as a module, choose M here: the 506 module will be called openpromfs. 507 508 Only choose N if you know in advance that you will not need to modify 509 OpenPROM settings on the running system. 510 511# Makefile helpers 512config SPARC64_PCI 513 bool 514 default y 515 depends on SPARC64 && PCI 516 517config SPARC64_PCI_MSI 518 bool 519 default y 520 depends on SPARC64_PCI && PCI_MSI 521 522endmenu 523 524config COMPAT 525 bool 526 depends on SPARC64 527 default y 528 select COMPAT_BINFMT_ELF 529 select HAVE_UID16 530 select ARCH_WANT_OLD_COMPAT_IPC 531 select COMPAT_OLD_SIGACTION 532 533config SYSVIPC_COMPAT 534 bool 535 depends on COMPAT && SYSVIPC 536 default y 537 538source "drivers/sbus/char/Kconfig" 539