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 TRACE_IRQFLAGS_SUPPORT 50 51config SPARC32 52 def_bool !64BIT 53 select ARCH_32BIT_OFF_T 54 select ARCH_HAS_SYNC_DMA_FOR_CPU 55 select CLZ_TAB 56 select DMA_DIRECT_REMAP 57 select GENERIC_ATOMIC64 58 select HAVE_UID16 59 select OLD_SIGACTION 60 select ZONE_DMA 61 62config SPARC64 63 def_bool 64BIT 64 select ALTERNATE_USER_ADDRESS_SPACE 65 select HAVE_FUNCTION_TRACER 66 select HAVE_FUNCTION_GRAPH_TRACER 67 select HAVE_KRETPROBES 68 select HAVE_KPROBES 69 select MMU_GATHER_RCU_TABLE_FREE if SMP 70 select MMU_GATHER_MERGE_VMAS 71 select MMU_GATHER_NO_FLUSH_CACHE 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 ARCH_HAS_VM_GET_PAGE_PROT 90 select HAVE_ARCH_AUDITSYSCALL 91 select ARCH_SUPPORTS_ATOMIC_RMW 92 select ARCH_SUPPORTS_DEBUG_PAGEALLOC 93 select HAVE_NMI 94 select HAVE_REGS_AND_STACK_ACCESS_API 95 select ARCH_USE_QUEUED_RWLOCKS 96 select ARCH_USE_QUEUED_SPINLOCKS 97 select GENERIC_TIME_VSYSCALL 98 select ARCH_CLOCKSOURCE_DATA 99 select ARCH_HAS_PTE_SPECIAL 100 select PCI_DOMAINS if PCI 101 select ARCH_HAS_GIGANTIC_PAGE 102 select HAVE_SOFTIRQ_ON_OWN_STACK 103 select HAVE_SETUP_PER_CPU_AREA 104 select NEED_PER_CPU_EMBED_FIRST_CHUNK 105 select NEED_PER_CPU_PAGE_FIRST_CHUNK 106 107config ARCH_PROC_KCORE_TEXT 108 def_bool y 109 110config CPU_BIG_ENDIAN 111 def_bool y 112 113config ARCH_ATU 114 bool 115 default y if SPARC64 116 117config STACKTRACE_SUPPORT 118 bool 119 default y if SPARC64 120 121config LOCKDEP_SUPPORT 122 bool 123 default y if SPARC64 124 125config ARCH_HIBERNATION_POSSIBLE 126 def_bool y if SPARC64 127 128config AUDIT_ARCH 129 bool 130 default y 131 132config MMU 133 bool 134 default y 135 136config HIGHMEM 137 bool 138 default y if SPARC32 139 select KMAP_LOCAL 140 141config GENERIC_ISA_DMA 142 bool 143 default y if SPARC32 144 145config PGTABLE_LEVELS 146 default 4 if 64BIT 147 default 3 148 149config ARCH_SUPPORTS_UPROBES 150 def_bool y if SPARC64 151 152menu "Processor type and features" 153 154config SMP 155 bool "Symmetric multi-processing support" 156 help 157 This enables support for systems with more than one CPU. If you have 158 a system with only one CPU, say N. If you have a system with more 159 than one CPU, say Y. 160 161 If you say N here, the kernel will run on uni- and multiprocessor 162 machines, but will use only one CPU of a multiprocessor machine. If 163 you say Y here, the kernel will run on many, but not all, 164 uniprocessor machines. On a uniprocessor machine, the kernel 165 will run faster if you say N here. 166 167 People using multiprocessor machines who say Y here should also say 168 Y to "Enhanced Real Time Clock Support", below. The "Advanced Power 169 Management" code will be disabled if you say Y here. 170 171 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO 172 available at <https://www.tldp.org/docs.html#howto>. 173 174 If you don't know what to do here, say N. 175 176config NR_CPUS 177 int "Maximum number of CPUs" 178 depends on SMP 179 range 2 32 if SPARC32 180 range 2 4096 if SPARC64 181 default 32 if SPARC32 182 default 4096 if SPARC64 183 184source "kernel/Kconfig.hz" 185 186config GENERIC_HWEIGHT 187 bool 188 default y 189 190config GENERIC_CALIBRATE_DELAY 191 bool 192 default y 193 194config ARCH_MAY_HAVE_PC_FDC 195 bool 196 default y 197 198config EMULATED_CMPXCHG 199 bool 200 default y if SPARC32 201 help 202 Sparc32 does not have a CAS instruction like sparc64. cmpxchg() 203 is emulated, and therefore it is not completely atomic. 204 205# Makefile helpers 206config SPARC32_SMP 207 bool 208 default y 209 depends on SPARC32 && SMP 210 211config SPARC64_SMP 212 bool 213 default y 214 depends on SPARC64 && SMP 215 216config EARLYFB 217 bool "Support for early boot text console" 218 default y 219 depends on SPARC64 220 help 221 Say Y here to enable a faster early framebuffer boot console. 222 223config HOTPLUG_CPU 224 bool "Support for hot-pluggable CPUs" 225 depends on SPARC64 && SMP 226 help 227 Say Y here to experiment with turning CPUs off and on. CPUs 228 can be controlled through /sys/devices/system/cpu/cpu#. 229 Say N if you want to disable CPU hotplug. 230 231if SPARC64 232source "drivers/cpufreq/Kconfig" 233endif 234 235config US3_MC 236 tristate "UltraSPARC-III Memory Controller driver" 237 depends on SPARC64 238 default y 239 help 240 This adds a driver for the UltraSPARC-III memory controller. 241 Loading this driver allows exact mnemonic strings to be 242 printed in the event of a memory error, so that the faulty DIMM 243 on the motherboard can be matched to the error. 244 245 If in doubt, say Y, as this information can be very useful. 246 247# Global things across all Sun machines. 248config GENERIC_LOCKBREAK 249 bool 250 default y 251 depends on SPARC64 && SMP && PREEMPTION 252 253config NUMA 254 bool "NUMA support" 255 depends on SPARC64 && SMP 256 257config NODES_SHIFT 258 int "Maximum NUMA Nodes (as a power of 2)" 259 range 4 5 if SPARC64 260 default "5" 261 depends on NUMA 262 help 263 Specify the maximum number of NUMA Nodes available on the target 264 system. Increases memory reserved to accommodate various tables. 265 266config ARCH_SPARSEMEM_ENABLE 267 def_bool y if SPARC64 268 select SPARSEMEM_VMEMMAP_ENABLE 269 270config ARCH_SPARSEMEM_DEFAULT 271 def_bool y if SPARC64 272 273config FORCE_MAX_ZONEORDER 274 int "Maximum zone order" 275 default "13" 276 help 277 The kernel memory allocator divides physically contiguous memory 278 blocks into "zones", where each zone is a power of two number of 279 pages. This option selects the largest power of two that the kernel 280 keeps in the memory allocator. If you need to allocate very large 281 blocks of physically contiguous memory, then you may need to 282 increase this value. 283 284 This config option is actually maximum order plus one. For example, 285 a value of 13 means that the largest free memory block is 2^12 pages. 286 287if SPARC64 288source "kernel/power/Kconfig" 289endif 290 291config SCHED_SMT 292 bool "SMT (Hyperthreading) scheduler support" 293 depends on SPARC64 && SMP 294 default y 295 help 296 SMT scheduler support improves the CPU scheduler's decision making 297 when dealing with SPARC cpus at a cost of slightly increased overhead 298 in some places. If unsure say N here. 299 300config SCHED_MC 301 bool "Multi-core scheduler support" 302 depends on SPARC64 && SMP 303 default y 304 help 305 Multi-core scheduler support improves the CPU scheduler's decision 306 making when dealing with multi-core CPU chips at a cost of slightly 307 increased overhead in some places. If unsure say N here. 308 309config CMDLINE_BOOL 310 bool "Default bootloader kernel arguments" 311 depends on SPARC64 312 313config CMDLINE 314 string "Initial kernel command string" 315 depends on CMDLINE_BOOL 316 default "console=ttyS0,9600 root=/dev/sda1" 317 help 318 Say Y here if you want to be able to pass default arguments to 319 the kernel. This will be overridden by the bootloader, if you 320 use one (such as SILO). This is most useful if you want to boot 321 a kernel from TFTP, and want default options to be available 322 with having them passed on the command line. 323 324 NOTE: This option WILL override the PROM bootargs setting! 325 326config SUN_PM 327 bool 328 default y if SPARC32 329 help 330 Enable power management and CPU standby features on supported 331 SPARC platforms. 332 333config SPARC_LED 334 tristate "Sun4m LED driver" 335 depends on SPARC32 336 help 337 This driver toggles the front-panel LED on sun4m systems 338 in a user-specifiable manner. Its state can be probed 339 by reading /proc/led and its blinking mode can be changed 340 via writes to /proc/led 341 342config SERIAL_CONSOLE 343 bool 344 depends on SPARC32 345 default y 346 help 347 If you say Y here, it will be possible to use a serial port as the 348 system console (the system console is the device which receives all 349 kernel messages and warnings and which allows logins in single user 350 mode). This could be useful if some terminal or printer is connected 351 to that serial port. 352 353 Even if you say Y here, the currently visible virtual console 354 (/dev/tty0) will still be used as the system console by default, but 355 you can alter that using a kernel command line option such as 356 "console=ttyS1". (Try "man bootparam" or see the documentation of 357 your boot loader (silo) about how to pass options to the kernel at 358 boot time.) 359 360 If you don't have a graphics card installed and you say Y here, the 361 kernel will automatically use the first serial line, /dev/ttyS0, as 362 system console. 363 364 If unsure, say N. 365 366config SPARC_LEON 367 bool "Sparc Leon processor family" 368 depends on SPARC32 369 select USB_EHCI_BIG_ENDIAN_MMIO 370 select USB_EHCI_BIG_ENDIAN_DESC 371 select USB_UHCI_BIG_ENDIAN_MMIO 372 select USB_UHCI_BIG_ENDIAN_DESC 373 help 374 If you say Y here if you are running on a SPARC-LEON processor. 375 The LEON processor is a synthesizable VHDL model of the 376 SPARC-v8 standard. LEON is part of the GRLIB collection of 377 IP cores that are distributed under GPL. GRLIB can be downloaded 378 from www.gaisler.com. You can download a sparc-linux cross-compilation 379 toolchain at www.gaisler.com. 380 381if SPARC_LEON 382menu "U-Boot options" 383 384config UBOOT_LOAD_ADDR 385 hex "uImage Load Address" 386 default 0x40004000 387 help 388 U-Boot kernel load address, the address in physical address space 389 where u-boot will place the Linux kernel before booting it. 390 This address is normally the base address of main memory + 0x4000. 391 392config UBOOT_FLASH_ADDR 393 hex "uImage.o Load Address" 394 default 0x00080000 395 help 396 Optional setting only affecting the uImage.o ELF-image used to 397 download the uImage file to the target using a ELF-loader other than 398 U-Boot. It may for example be used to download an uImage to FLASH with 399 the GRMON utility before even starting u-boot. 400 401config UBOOT_ENTRY_ADDR 402 hex "uImage Entry Address" 403 default 0xf0004000 404 help 405 Do not change this unless you know what you're doing. This is 406 hardcoded by the SPARC32 and LEON port. 407 408 This is the virtual address u-boot jumps to when booting the Linux 409 Kernel. 410 411endmenu 412endif 413 414endmenu 415 416menu "Bus options (PCI etc.)" 417config SBUS 418 bool 419 default y 420 421config SBUSCHAR 422 bool 423 default y 424 425config SUN_LDOMS 426 bool "Sun Logical Domains support" 427 depends on SPARC64 428 help 429 Say Y here is you want to support virtual devices via 430 Logical Domains. 431 432config PCIC_PCI 433 bool 434 depends on PCI && SPARC32 && !SPARC_LEON 435 default y 436 437config LEON_PCI 438 bool 439 depends on PCI && SPARC_LEON 440 default y 441 442config SPARC_GRPCI1 443 bool "GRPCI Host Bridge Support" 444 depends on LEON_PCI 445 default y 446 help 447 Say Y here to include the GRPCI Host Bridge Driver. The GRPCI 448 PCI host controller is typically found in GRLIB SPARC32/LEON 449 systems. The driver has one property (all_pci_errors) controlled 450 from the bootloader that makes the GRPCI to generate interrupts 451 on detected PCI Parity and System errors. 452 453config SPARC_GRPCI2 454 bool "GRPCI2 Host Bridge Support" 455 depends on LEON_PCI 456 default y 457 help 458 Say Y here to include the GRPCI2 Host Bridge Driver. 459 460config SUN_OPENPROMFS 461 tristate "Openprom tree appears in /proc/openprom" 462 help 463 If you say Y, the OpenPROM device tree will be available as a 464 virtual file system, which you can mount to /proc/openprom by "mount 465 -t openpromfs none /proc/openprom". 466 467 To compile the /proc/openprom support as a module, choose M here: the 468 module will be called openpromfs. 469 470 Only choose N if you know in advance that you will not need to modify 471 OpenPROM settings on the running system. 472 473# Makefile helpers 474config SPARC64_PCI 475 bool 476 default y 477 depends on SPARC64 && PCI 478 479config SPARC64_PCI_MSI 480 bool 481 default y 482 depends on SPARC64_PCI && PCI_MSI 483 484endmenu 485 486config COMPAT 487 bool 488 depends on SPARC64 489 default y 490 select HAVE_UID16 491 select ARCH_WANT_OLD_COMPAT_IPC 492 select COMPAT_OLD_SIGACTION 493 494source "drivers/sbus/char/Kconfig" 495