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_ARCH_KGDB if !SMP || SPARC64 23 select HAVE_ARCH_TRACEHOOK 24 select HAVE_ARCH_SECCOMP if SPARC64 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 MODULES_USE_ELF_RELA 41 select PCI_SYSCALL if PCI 42 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI 43 select ODD_RT_SIGACTION 44 select OLD_SIGSUSPEND 45 select CPU_NO_EFFICIENT_FFS 46 select LOCKDEP_SMALL if LOCKDEP 47 select NEED_DMA_MAP_STATE 48 select NEED_SG_DMA_LENGTH 49 select SET_FS 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 select ZONE_DMA 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 MMU_GATHER_RCU_TABLE_FREE if SMP 68 select HAVE_ARCH_TRANSPARENT_HUGEPAGE 69 select HAVE_DYNAMIC_FTRACE 70 select HAVE_FTRACE_MCOUNT_RECORD 71 select HAVE_SYSCALL_TRACEPOINTS 72 select HAVE_CONTEXT_TRACKING 73 select HAVE_TIF_NOHZ 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 ARCH_HAVE_NMI_SAFE_CMPXCHG 84 select HAVE_C_RECORDMCOUNT 85 select HAVE_ARCH_AUDITSYSCALL 86 select ARCH_SUPPORTS_ATOMIC_RMW 87 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 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 select HAVE_SOFTIRQ_ON_OWN_STACK 98 99config ARCH_PROC_KCORE_TEXT 100 def_bool y 101 102config CPU_BIG_ENDIAN 103 def_bool y 104 105config ARCH_ATU 106 bool 107 default y if SPARC64 108 109config STACKTRACE_SUPPORT 110 bool 111 default y if SPARC64 112 113config LOCKDEP_SUPPORT 114 bool 115 default y if SPARC64 116 117config ARCH_HIBERNATION_POSSIBLE 118 def_bool y if SPARC64 119 120config AUDIT_ARCH 121 bool 122 default y 123 124config HAVE_SETUP_PER_CPU_AREA 125 def_bool y if SPARC64 126 127config NEED_PER_CPU_EMBED_FIRST_CHUNK 128 def_bool y if SPARC64 129 130config NEED_PER_CPU_PAGE_FIRST_CHUNK 131 def_bool y if SPARC64 132 133config MMU 134 bool 135 default y 136 137config HIGHMEM 138 bool 139 default y if SPARC32 140 select KMAP_LOCAL 141 142config GENERIC_ISA_DMA 143 bool 144 default y if SPARC32 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 help 222 Say Y here to enable a faster early framebuffer boot console. 223 224config HOTPLUG_CPU 225 bool "Support for hot-pluggable CPUs" 226 depends on SPARC64 && SMP 227 help 228 Say Y here to experiment with turning CPUs off and on. CPUs 229 can be controlled through /sys/devices/system/cpu/cpu#. 230 Say N if you want to disable CPU hotplug. 231 232if SPARC64 233source "drivers/cpufreq/Kconfig" 234endif 235 236config US3_MC 237 tristate "UltraSPARC-III Memory Controller driver" 238 depends on SPARC64 239 default y 240 help 241 This adds a driver for the UltraSPARC-III memory controller. 242 Loading this driver allows exact mnemonic strings to be 243 printed in the event of a memory error, so that the faulty DIMM 244 on the motherboard can be matched to the error. 245 246 If in doubt, say Y, as this information can be very useful. 247 248# Global things across all Sun machines. 249config GENERIC_LOCKBREAK 250 bool 251 default y 252 depends on SPARC64 && SMP && PREEMPTION 253 254config NUMA 255 bool "NUMA support" 256 depends on SPARC64 && SMP 257 258config NODES_SHIFT 259 int "Maximum NUMA Nodes (as a power of 2)" 260 range 4 5 if SPARC64 261 default "5" 262 depends on NUMA 263 help 264 Specify the maximum number of NUMA Nodes available on the target 265 system. Increases memory reserved to accommodate various tables. 266 267config ARCH_SPARSEMEM_ENABLE 268 def_bool y if SPARC64 269 select SPARSEMEM_VMEMMAP_ENABLE 270 271config ARCH_SPARSEMEM_DEFAULT 272 def_bool y if SPARC64 273 274config FORCE_MAX_ZONEORDER 275 int "Maximum zone order" 276 default "13" 277 help 278 The kernel memory allocator divides physically contiguous memory 279 blocks into "zones", where each zone is a power of two number of 280 pages. This option selects the largest power of two that the kernel 281 keeps in the memory allocator. If you need to allocate very large 282 blocks of physically contiguous memory, then you may need to 283 increase this value. 284 285 This config option is actually maximum order plus one. For example, 286 a value of 13 means that the largest free memory block is 2^12 pages. 287 288if SPARC64 289source "kernel/power/Kconfig" 290endif 291 292config SCHED_SMT 293 bool "SMT (Hyperthreading) scheduler support" 294 depends on SPARC64 && SMP 295 default y 296 help 297 SMT scheduler support improves the CPU scheduler's decision making 298 when dealing with SPARC cpus at a cost of slightly increased overhead 299 in some places. If unsure say N here. 300 301config SCHED_MC 302 bool "Multi-core scheduler support" 303 depends on SPARC64 && SMP 304 default y 305 help 306 Multi-core scheduler support improves the CPU scheduler's decision 307 making when dealing with multi-core CPU chips at a cost of slightly 308 increased overhead in some places. If unsure say N here. 309 310config CMDLINE_BOOL 311 bool "Default bootloader kernel arguments" 312 depends on SPARC64 313 314config CMDLINE 315 string "Initial kernel command string" 316 depends on CMDLINE_BOOL 317 default "console=ttyS0,9600 root=/dev/sda1" 318 help 319 Say Y here if you want to be able to pass default arguments to 320 the kernel. This will be overridden by the bootloader, if you 321 use one (such as SILO). This is most useful if you want to boot 322 a kernel from TFTP, and want default options to be available 323 with having them passed on the command line. 324 325 NOTE: This option WILL override the PROM bootargs setting! 326 327config SUN_PM 328 bool 329 default y if SPARC32 330 help 331 Enable power management and CPU standby features on supported 332 SPARC platforms. 333 334config SPARC_LED 335 tristate "Sun4m LED driver" 336 depends on SPARC32 337 help 338 This driver toggles the front-panel LED on sun4m systems 339 in a user-specifiable manner. Its state can be probed 340 by reading /proc/led and its blinking mode can be changed 341 via writes to /proc/led 342 343config SERIAL_CONSOLE 344 bool 345 depends on SPARC32 346 default y 347 help 348 If you say Y here, it will be possible to use a serial port as the 349 system console (the system console is the device which receives all 350 kernel messages and warnings and which allows logins in single user 351 mode). This could be useful if some terminal or printer is connected 352 to that serial port. 353 354 Even if you say Y here, the currently visible virtual console 355 (/dev/tty0) will still be used as the system console by default, but 356 you can alter that using a kernel command line option such as 357 "console=ttyS1". (Try "man bootparam" or see the documentation of 358 your boot loader (silo) about how to pass options to the kernel at 359 boot time.) 360 361 If you don't have a graphics card installed and you say Y here, the 362 kernel will automatically use the first serial line, /dev/ttyS0, as 363 system console. 364 365 If unsure, say N. 366 367config SPARC_LEON 368 bool "Sparc Leon processor family" 369 depends on SPARC32 370 select USB_EHCI_BIG_ENDIAN_MMIO 371 select USB_EHCI_BIG_ENDIAN_DESC 372 select USB_UHCI_BIG_ENDIAN_MMIO 373 select USB_UHCI_BIG_ENDIAN_DESC 374 help 375 If you say Y here if you are running on a SPARC-LEON processor. 376 The LEON processor is a synthesizable VHDL model of the 377 SPARC-v8 standard. LEON is part of the GRLIB collection of 378 IP cores that are distributed under GPL. GRLIB can be downloaded 379 from www.gaisler.com. You can download a sparc-linux cross-compilation 380 toolchain at www.gaisler.com. 381 382if SPARC_LEON 383menu "U-Boot options" 384 385config UBOOT_LOAD_ADDR 386 hex "uImage Load Address" 387 default 0x40004000 388 help 389 U-Boot kernel load address, the address in physical address space 390 where u-boot will place the Linux kernel before booting it. 391 This address is normally the base address of main memory + 0x4000. 392 393config UBOOT_FLASH_ADDR 394 hex "uImage.o Load Address" 395 default 0x00080000 396 help 397 Optional setting only affecting the uImage.o ELF-image used to 398 download the uImage file to the target using a ELF-loader other than 399 U-Boot. It may for example be used to download an uImage to FLASH with 400 the GRMON utility before even starting u-boot. 401 402config UBOOT_ENTRY_ADDR 403 hex "uImage Entry Address" 404 default 0xf0004000 405 help 406 Do not change this unless you know what you're doing. This is 407 hardcoded by the SPARC32 and LEON port. 408 409 This is the virtual address u-boot jumps to when booting the Linux 410 Kernel. 411 412endmenu 413endif 414 415endmenu 416 417menu "Bus options (PCI etc.)" 418config SBUS 419 bool 420 default y 421 422config SBUSCHAR 423 bool 424 default y 425 426config SUN_LDOMS 427 bool "Sun Logical Domains support" 428 depends on SPARC64 429 help 430 Say Y here is you want to support virtual devices via 431 Logical Domains. 432 433config PCIC_PCI 434 bool 435 depends on PCI && SPARC32 && !SPARC_LEON 436 default y 437 438config LEON_PCI 439 bool 440 depends on PCI && SPARC_LEON 441 default y 442 443config SPARC_GRPCI1 444 bool "GRPCI Host Bridge Support" 445 depends on LEON_PCI 446 default y 447 help 448 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 449 PCI host controller is typically found in GRLIB SPARC32/LEON 450 systems. The driver has one property (all_pci_errors) controlled 451 from the bootloader that makes the GRPCI to generate interrupts 452 on detected PCI Parity and System errors. 453 454config SPARC_GRPCI2 455 bool "GRPCI2 Host Bridge Support" 456 depends on LEON_PCI 457 default y 458 help 459 Say Y here to include the GRPCI2 Host Bridge Driver. 460 461config SUN_OPENPROMFS 462 tristate "Openprom tree appears in /proc/openprom" 463 help 464 If you say Y, the OpenPROM device tree will be available as a 465 virtual file system, which you can mount to /proc/openprom by "mount 466 -t openpromfs none /proc/openprom". 467 468 To compile the /proc/openprom support as a module, choose M here: the 469 module will be called openpromfs. 470 471 Only choose N if you know in advance that you will not need to modify 472 OpenPROM settings on the running system. 473 474# Makefile helpers 475config SPARC64_PCI 476 bool 477 default y 478 depends on SPARC64 && PCI 479 480config SPARC64_PCI_MSI 481 bool 482 default y 483 depends on SPARC64_PCI && PCI_MSI 484 485endmenu 486 487config COMPAT 488 bool 489 depends on SPARC64 490 default y 491 select HAVE_UID16 492 select ARCH_WANT_OLD_COMPAT_IPC 493 select COMPAT_OLD_SIGACTION 494 495config SYSVIPC_COMPAT 496 bool 497 depends on COMPAT && SYSVIPC 498 default y 499 500source "drivers/sbus/char/Kconfig" 501