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_IDE 21 select HAVE_OPROFILE 22 select HAVE_ARCH_KGDB if !SMP || SPARC64 23 select HAVE_ARCH_TRACEHOOK 24 select HAVE_EXIT_THREAD 25 select HAVE_PCI 26 select SYSCTL_EXCEPTION_TRACE 27 select RTC_CLASS 28 select RTC_DRV_M48T59 29 select RTC_SYSTOHC 30 select HAVE_ARCH_JUMP_LABEL if SPARC64 31 select GENERIC_IRQ_SHOW 32 select ARCH_WANT_IPC_PARSE_VERSION 33 select GENERIC_PCI_IOMAP 34 select HAVE_NMI_WATCHDOG if SPARC64 35 select HAVE_CBPF_JIT if SPARC32 36 select HAVE_EBPF_JIT if SPARC64 37 select HAVE_DEBUG_BUGVERBOSE 38 select GENERIC_SMP_IDLE_THREAD 39 select GENERIC_CLOCKEVENTS 40 select GENERIC_STRNCPY_FROM_USER 41 select GENERIC_STRNLEN_USER 42 select MODULES_USE_ELF_RELA 43 select PCI_SYSCALL if PCI 44 select ODD_RT_SIGACTION 45 select OLD_SIGSUSPEND 46 select CPU_NO_EFFICIENT_FFS 47 select LOCKDEP_SMALL if LOCKDEP 48 select NEED_DMA_MAP_STATE 49 select NEED_SG_DMA_LENGTH 50 51config SPARC32 52 def_bool !64BIT 53 select ARCH_32BIT_OFF_T 54 select ARCH_HAS_SYNC_DMA_FOR_CPU 55 select GENERIC_ATOMIC64 56 select CLZ_TAB 57 select HAVE_UID16 58 select OLD_SIGACTION 59 60config SPARC64 61 def_bool 64BIT 62 select HAVE_FUNCTION_TRACER 63 select HAVE_FUNCTION_GRAPH_TRACER 64 select HAVE_KRETPROBES 65 select HAVE_KPROBES 66 select HAVE_RCU_TABLE_FREE if SMP 67 select HAVE_RCU_TABLE_NO_INVALIDATE if HAVE_RCU_TABLE_FREE 68 select HAVE_MEMBLOCK_NODE_MAP 69 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 70 select HAVE_DYNAMIC_FTRACE 71 select HAVE_FTRACE_MCOUNT_RECORD 72 select HAVE_SYSCALL_TRACEPOINTS 73 select HAVE_CONTEXT_TRACKING 74 select HAVE_DEBUG_KMEMLEAK 75 select IOMMU_HELPER 76 select SPARSE_IRQ 77 select RTC_DRV_CMOS 78 select RTC_DRV_BQ4802 79 select RTC_DRV_SUN4V 80 select RTC_DRV_STARFIRE 81 select HAVE_PERF_EVENTS 82 select PERF_USE_VMALLOC 83 select IRQ_PREFLOW_FASTEOI 84 select ARCH_HAVE_NMI_SAFE_CMPXCHG 85 select HAVE_C_RECORDMCOUNT 86 select HAVE_ARCH_AUDITSYSCALL 87 select ARCH_SUPPORTS_ATOMIC_RMW 88 select HAVE_NMI 89 select HAVE_REGS_AND_STACK_ACCESS_API 90 select ARCH_USE_QUEUED_RWLOCKS 91 select ARCH_USE_QUEUED_SPINLOCKS 92 select GENERIC_TIME_VSYSCALL 93 select ARCH_CLOCKSOURCE_DATA 94 select ARCH_HAS_PTE_SPECIAL 95 select PCI_DOMAINS if PCI 96 select ARCH_HAS_GIGANTIC_PAGE 97 98config ARCH_DEFCONFIG 99 string 100 default "arch/sparc/configs/sparc32_defconfig" if SPARC32 101 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 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 145config ZONE_DMA 146 bool 147 default y if SPARC32 148 149config GENERIC_ISA_DMA 150 bool 151 default y if SPARC32 152 153config ARCH_SUPPORTS_DEBUG_PAGEALLOC 154 def_bool y if SPARC64 155 156config PGTABLE_LEVELS 157 default 4 if 64BIT 158 default 3 159 160config ARCH_SUPPORTS_UPROBES 161 def_bool y if SPARC64 162 163menu "Processor type and features" 164 165config SMP 166 bool "Symmetric multi-processing support" 167 ---help--- 168 This enables support for systems with more than one CPU. If you have 169 a system with only one CPU, say N. If you have a system with more 170 than one CPU, say Y. 171 172 If you say N here, the kernel will run on uni- and multiprocessor 173 machines, but will use only one CPU of a multiprocessor machine. If 174 you say Y here, the kernel will run on many, but not all, 175 uniprocessor machines. On a uniprocessor machine, the kernel 176 will run faster if you say N here. 177 178 People using multiprocessor machines who say Y here should also say 179 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 180 Management" code will be disabled if you say Y here. 181 182 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO 183 available at <http://www.tldp.org/docs.html#howto>. 184 185 If you don't know what to do here, say N. 186 187config NR_CPUS 188 int "Maximum number of CPUs" 189 depends on SMP 190 range 2 32 if SPARC32 191 range 2 4096 if SPARC64 192 default 32 if SPARC32 193 default 4096 if SPARC64 194 195source "kernel/Kconfig.hz" 196 197config GENERIC_HWEIGHT 198 bool 199 default y 200 201config GENERIC_CALIBRATE_DELAY 202 bool 203 default y 204 205config ARCH_MAY_HAVE_PC_FDC 206 bool 207 default y 208 209config EMULATED_CMPXCHG 210 bool 211 default y if SPARC32 212 help 213 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 214 is emulated, and therefore it is not completely atomic. 215 216# Makefile helpers 217config SPARC32_SMP 218 bool 219 default y 220 depends on SPARC32 && SMP 221 222config SPARC64_SMP 223 bool 224 default y 225 depends on SPARC64 && SMP 226 227config EARLYFB 228 bool "Support for early boot text console" 229 default y 230 depends on SPARC64 231 help 232 Say Y here to enable a faster early framebuffer boot console. 233 234config SECCOMP 235 bool "Enable seccomp to safely compute untrusted bytecode" 236 depends on SPARC64 && PROC_FS 237 default y 238 help 239 This kernel feature is useful for number crunching applications 240 that may need to compute untrusted bytecode during their 241 execution. By using pipes or other transports made available to 242 the process as file descriptors supporting the read/write 243 syscalls, it's possible to isolate those applications in 244 their own address space using seccomp. Once seccomp is 245 enabled via /proc/<pid>/seccomp, it cannot be disabled 246 and the task is only allowed to execute a few safe syscalls 247 defined by each seccomp mode. 248 249 If unsure, say Y. Only embedded should say N here. 250 251config HOTPLUG_CPU 252 bool "Support for hot-pluggable CPUs" 253 depends on SPARC64 && SMP 254 help 255 Say Y here to experiment with turning CPUs off and on. CPUs 256 can be controlled through /sys/devices/system/cpu/cpu#. 257 Say N if you want to disable CPU hotplug. 258 259if SPARC64 260source "drivers/cpufreq/Kconfig" 261endif 262 263config US3_MC 264 tristate "UltraSPARC-III Memory Controller driver" 265 depends on SPARC64 266 default y 267 help 268 This adds a driver for the UltraSPARC-III memory controller. 269 Loading this driver allows exact mnemonic strings to be 270 printed in the event of a memory error, so that the faulty DIMM 271 on the motherboard can be matched to the error. 272 273 If in doubt, say Y, as this information can be very useful. 274 275# Global things across all Sun machines. 276config GENERIC_LOCKBREAK 277 bool 278 default y 279 depends on SPARC64 && SMP && PREEMPT 280 281config NUMA 282 bool "NUMA support" 283 depends on SPARC64 && SMP 284 285config NODES_SHIFT 286 int "Maximum NUMA Nodes (as a power of 2)" 287 range 4 5 if SPARC64 288 default "5" 289 depends on NEED_MULTIPLE_NODES 290 help 291 Specify the maximum number of NUMA Nodes available on the target 292 system. Increases memory reserved to accommodate various tables. 293 294# Some NUMA nodes have memory ranges that span 295# other nodes. Even though a pfn is valid and 296# between a node's start and end pfns, it may not 297# reside on that node. See memmap_init_zone() 298# for details. 299config NODES_SPAN_OTHER_NODES 300 def_bool y 301 depends on NEED_MULTIPLE_NODES 302 303config ARCH_SELECT_MEMORY_MODEL 304 def_bool y if SPARC64 305 306config ARCH_SPARSEMEM_ENABLE 307 def_bool y if SPARC64 308 select SPARSEMEM_VMEMMAP_ENABLE 309 310config ARCH_SPARSEMEM_DEFAULT 311 def_bool y if SPARC64 312 313config FORCE_MAX_ZONEORDER 314 int "Maximum zone order" 315 default "13" 316 help 317 The kernel memory allocator divides physically contiguous memory 318 blocks into "zones", where each zone is a power of two number of 319 pages. This option selects the largest power of two that the kernel 320 keeps in the memory allocator. If you need to allocate very large 321 blocks of physically contiguous memory, then you may need to 322 increase this value. 323 324 This config option is actually maximum order plus one. For example, 325 a value of 13 means that the largest free memory block is 2^12 pages. 326 327if SPARC64 328source "kernel/power/Kconfig" 329endif 330 331config SCHED_SMT 332 bool "SMT (Hyperthreading) scheduler support" 333 depends on SPARC64 && SMP 334 default y 335 help 336 SMT scheduler support improves the CPU scheduler's decision making 337 when dealing with SPARC cpus at a cost of slightly increased overhead 338 in some places. If unsure say N here. 339 340config SCHED_MC 341 bool "Multi-core scheduler support" 342 depends on SPARC64 && SMP 343 default y 344 help 345 Multi-core scheduler support improves the CPU scheduler's decision 346 making when dealing with multi-core CPU chips at a cost of slightly 347 increased overhead in some places. If unsure say N here. 348 349config CMDLINE_BOOL 350 bool "Default bootloader kernel arguments" 351 depends on SPARC64 352 353config CMDLINE 354 string "Initial kernel command string" 355 depends on CMDLINE_BOOL 356 default "console=ttyS0,9600 root=/dev/sda1" 357 help 358 Say Y here if you want to be able to pass default arguments to 359 the kernel. This will be overridden by the bootloader, if you 360 use one (such as SILO). This is most useful if you want to boot 361 a kernel from TFTP, and want default options to be available 362 with having them passed on the command line. 363 364 NOTE: This option WILL override the PROM bootargs setting! 365 366config SUN_PM 367 bool 368 default y if SPARC32 369 help 370 Enable power management and CPU standby features on supported 371 SPARC platforms. 372 373config SPARC_LED 374 tristate "Sun4m LED driver" 375 depends on SPARC32 376 help 377 This driver toggles the front-panel LED on sun4m systems 378 in a user-specifiable manner. Its state can be probed 379 by reading /proc/led and its blinking mode can be changed 380 via writes to /proc/led 381 382config SERIAL_CONSOLE 383 bool 384 depends on SPARC32 385 default y 386 ---help--- 387 If you say Y here, it will be possible to use a serial port as the 388 system console (the system console is the device which receives all 389 kernel messages and warnings and which allows logins in single user 390 mode). This could be useful if some terminal or printer is connected 391 to that serial port. 392 393 Even if you say Y here, the currently visible virtual console 394 (/dev/tty0) will still be used as the system console by default, but 395 you can alter that using a kernel command line option such as 396 "console=ttyS1". (Try "man bootparam" or see the documentation of 397 your boot loader (silo) about how to pass options to the kernel at 398 boot time.) 399 400 If you don't have a graphics card installed and you say Y here, the 401 kernel will automatically use the first serial line, /dev/ttyS0, as 402 system console. 403 404 If unsure, say N. 405 406config SPARC_LEON 407 bool "Sparc Leon processor family" 408 depends on SPARC32 409 select USB_EHCI_BIG_ENDIAN_MMIO 410 select USB_EHCI_BIG_ENDIAN_DESC 411 select USB_UHCI_BIG_ENDIAN_MMIO 412 select USB_UHCI_BIG_ENDIAN_DESC 413 ---help--- 414 If you say Y here if you are running on a SPARC-LEON processor. 415 The LEON processor is a synthesizable VHDL model of the 416 SPARC-v8 standard. LEON is part of the GRLIB collection of 417 IP cores that are distributed under GPL. GRLIB can be downloaded 418 from www.gaisler.com. You can download a sparc-linux cross-compilation 419 toolchain at www.gaisler.com. 420 421if SPARC_LEON 422menu "U-Boot options" 423 424config UBOOT_LOAD_ADDR 425 hex "uImage Load Address" 426 default 0x40004000 427 ---help--- 428 U-Boot kernel load address, the address in physical address space 429 where u-boot will place the Linux kernel before booting it. 430 This address is normally the base address of main memory + 0x4000. 431 432config UBOOT_FLASH_ADDR 433 hex "uImage.o Load Address" 434 default 0x00080000 435 ---help--- 436 Optional setting only affecting the uImage.o ELF-image used to 437 download the uImage file to the target using a ELF-loader other than 438 U-Boot. It may for example be used to download an uImage to FLASH with 439 the GRMON utility before even starting u-boot. 440 441config UBOOT_ENTRY_ADDR 442 hex "uImage Entry Address" 443 default 0xf0004000 444 ---help--- 445 Do not change this unless you know what you're doing. This is 446 hardcoded by the SPARC32 and LEON port. 447 448 This is the virtual address u-boot jumps to when booting the Linux 449 Kernel. 450 451endmenu 452endif 453 454endmenu 455 456menu "Bus options (PCI etc.)" 457config SBUS 458 bool 459 default y 460 461config SBUSCHAR 462 bool 463 default y 464 465config SUN_LDOMS 466 bool "Sun Logical Domains support" 467 depends on SPARC64 468 help 469 Say Y here is you want to support virtual devices via 470 Logical Domains. 471 472config PCIC_PCI 473 bool 474 depends on PCI && SPARC32 && !SPARC_LEON 475 default y 476 477config LEON_PCI 478 bool 479 depends on PCI && SPARC_LEON 480 default y 481 482config SPARC_GRPCI1 483 bool "GRPCI Host Bridge Support" 484 depends on LEON_PCI 485 default y 486 help 487 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 488 PCI host controller is typically found in GRLIB SPARC32/LEON 489 systems. The driver has one property (all_pci_errors) controlled 490 from the bootloader that makes the GRPCI to generate interrupts 491 on detected PCI Parity and System errors. 492 493config SPARC_GRPCI2 494 bool "GRPCI2 Host Bridge Support" 495 depends on LEON_PCI 496 default y 497 help 498 Say Y here to include the GRPCI2 Host Bridge Driver. 499 500config SUN_OPENPROMFS 501 tristate "Openprom tree appears in /proc/openprom" 502 help 503 If you say Y, the OpenPROM device tree will be available as a 504 virtual file system, which you can mount to /proc/openprom by "mount 505 -t openpromfs none /proc/openprom". 506 507 To compile the /proc/openprom support as a module, choose M here: the 508 module will be called openpromfs. 509 510 Only choose N if you know in advance that you will not need to modify 511 OpenPROM settings on the running system. 512 513# Makefile helpers 514config SPARC64_PCI 515 bool 516 default y 517 depends on SPARC64 && PCI 518 519config SPARC64_PCI_MSI 520 bool 521 default y 522 depends on SPARC64_PCI && PCI_MSI 523 524endmenu 525 526config COMPAT 527 bool 528 depends on SPARC64 529 default y 530 select COMPAT_BINFMT_ELF 531 select HAVE_UID16 532 select ARCH_WANT_OLD_COMPAT_IPC 533 select COMPAT_OLD_SIGACTION 534 535config SYSVIPC_COMPAT 536 bool 537 depends on COMPAT && SYSVIPC 538 default y 539 540source "drivers/sbus/char/Kconfig" 541