| # SPDX-License-Identifier: GPL-2.0-only |
| config 64BIT |
| bool "64-bit kernel" if "$(ARCH)" = "sparc" |
| default "$(ARCH)" = "sparc64" |
| help |
| SPARC is a family of RISC microprocessors designed and marketed by |
| Sun Microsystems, incorporated. They are very widely found in Sun |
| workstations and clones. |
| |
| Say yes to build a 64-bit kernel - formerly known as sparc64 |
| Say no to build a 32-bit kernel - formerly known as sparc |
| |
| config SPARC |
| bool |
| default y |
| select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI |
| select ARCH_MIGHT_HAVE_PC_SERIO |
| select OF |
| select OF_PROMTREE |
| select HAVE_ASM_MODVERSIONS |
| select HAVE_IDE |
| select HAVE_OPROFILE |
| select HAVE_ARCH_KGDB if !SMP || SPARC64 |
| select HAVE_ARCH_TRACEHOOK |
| select HAVE_EXIT_THREAD |
| select HAVE_PCI |
| select SYSCTL_EXCEPTION_TRACE |
| select RTC_CLASS |
| select RTC_DRV_M48T59 |
| select RTC_SYSTOHC |
| select HAVE_ARCH_JUMP_LABEL if SPARC64 |
| select GENERIC_IRQ_SHOW |
| select ARCH_WANT_IPC_PARSE_VERSION |
| select GENERIC_PCI_IOMAP |
| select HAVE_NMI_WATCHDOG if SPARC64 |
| select HAVE_CBPF_JIT if SPARC32 |
| select HAVE_EBPF_JIT if SPARC64 |
| select HAVE_DEBUG_BUGVERBOSE |
| select GENERIC_SMP_IDLE_THREAD |
| select GENERIC_CLOCKEVENTS |
| select GENERIC_STRNCPY_FROM_USER |
| select GENERIC_STRNLEN_USER |
| select MODULES_USE_ELF_RELA |
| select PCI_SYSCALL if PCI |
| select ODD_RT_SIGACTION |
| select OLD_SIGSUSPEND |
| select CPU_NO_EFFICIENT_FFS |
| select LOCKDEP_SMALL if LOCKDEP |
| select NEED_DMA_MAP_STATE |
| select NEED_SG_DMA_LENGTH |
| |
| config SPARC32 |
| def_bool !64BIT |
| select ARCH_32BIT_OFF_T |
| select ARCH_HAS_SYNC_DMA_FOR_CPU |
| select GENERIC_ATOMIC64 |
| select CLZ_TAB |
| select HAVE_UID16 |
| select OLD_SIGACTION |
| |
| config SPARC64 |
| def_bool 64BIT |
| select HAVE_FUNCTION_TRACER |
| select HAVE_FUNCTION_GRAPH_TRACER |
| select HAVE_KRETPROBES |
| select HAVE_KPROBES |
| select MMU_GATHER_RCU_TABLE_FREE if SMP |
| select HAVE_ARCH_TRANSPARENT_HUGEPAGE |
| select HAVE_DYNAMIC_FTRACE |
| select HAVE_FTRACE_MCOUNT_RECORD |
| select HAVE_SYSCALL_TRACEPOINTS |
| select HAVE_CONTEXT_TRACKING |
| select HAVE_TIF_NOHZ |
| select HAVE_DEBUG_KMEMLEAK |
| select IOMMU_HELPER |
| select SPARSE_IRQ |
| select RTC_DRV_CMOS |
| select RTC_DRV_BQ4802 |
| select RTC_DRV_SUN4V |
| select RTC_DRV_STARFIRE |
| select HAVE_PERF_EVENTS |
| select PERF_USE_VMALLOC |
| select IRQ_PREFLOW_FASTEOI |
| select ARCH_HAVE_NMI_SAFE_CMPXCHG |
| select HAVE_C_RECORDMCOUNT |
| select HAVE_ARCH_AUDITSYSCALL |
| select ARCH_SUPPORTS_ATOMIC_RMW |
| select HAVE_NMI |
| select HAVE_REGS_AND_STACK_ACCESS_API |
| select ARCH_USE_QUEUED_RWLOCKS |
| select ARCH_USE_QUEUED_SPINLOCKS |
| select GENERIC_TIME_VSYSCALL |
| select ARCH_CLOCKSOURCE_DATA |
| select ARCH_HAS_PTE_SPECIAL |
| select PCI_DOMAINS if PCI |
| select ARCH_HAS_GIGANTIC_PAGE |
| |
| config ARCH_PROC_KCORE_TEXT |
| def_bool y |
| |
| config CPU_BIG_ENDIAN |
| def_bool y |
| |
| config ARCH_ATU |
| bool |
| default y if SPARC64 |
| |
| config STACKTRACE_SUPPORT |
| bool |
| default y if SPARC64 |
| |
| config LOCKDEP_SUPPORT |
| bool |
| default y if SPARC64 |
| |
| config ARCH_HIBERNATION_POSSIBLE |
| def_bool y if SPARC64 |
| |
| config AUDIT_ARCH |
| bool |
| default y |
| |
| config HAVE_SETUP_PER_CPU_AREA |
| def_bool y if SPARC64 |
| |
| config NEED_PER_CPU_EMBED_FIRST_CHUNK |
| def_bool y if SPARC64 |
| |
| config NEED_PER_CPU_PAGE_FIRST_CHUNK |
| def_bool y if SPARC64 |
| |
| config MMU |
| bool |
| default y |
| |
| config HIGHMEM |
| bool |
| default y if SPARC32 |
| |
| config ZONE_DMA |
| bool |
| default y if SPARC32 |
| |
| config GENERIC_ISA_DMA |
| bool |
| default y if SPARC32 |
| |
| config ARCH_SUPPORTS_DEBUG_PAGEALLOC |
| def_bool y if SPARC64 |
| |
| config PGTABLE_LEVELS |
| default 4 if 64BIT |
| default 3 |
| |
| config ARCH_SUPPORTS_UPROBES |
| def_bool y if SPARC64 |
| |
| menu "Processor type and features" |
| |
| config SMP |
| bool "Symmetric multi-processing support" |
| ---help--- |
| This enables support for systems with more than one CPU. If you have |
| a system with only one CPU, say N. If you have a system with more |
| than one CPU, say Y. |
| |
| If you say N here, the kernel will run on uni- and multiprocessor |
| machines, but will use only one CPU of a multiprocessor machine. If |
| you say Y here, the kernel will run on many, but not all, |
| uniprocessor machines. On a uniprocessor machine, the kernel |
| will run faster if you say N here. |
| |
| People using multiprocessor machines who say Y here should also say |
| Y to "Enhanced Real Time Clock Support", below. The "Advanced Power |
| Management" code will be disabled if you say Y here. |
| |
| See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO |
| available at <http://www.tldp.org/docs.html#howto>. |
| |
| If you don't know what to do here, say N. |
| |
| config NR_CPUS |
| int "Maximum number of CPUs" |
| depends on SMP |
| range 2 32 if SPARC32 |
| range 2 4096 if SPARC64 |
| default 32 if SPARC32 |
| default 4096 if SPARC64 |
| |
| source "kernel/Kconfig.hz" |
| |
| config GENERIC_HWEIGHT |
| bool |
| default y |
| |
| config GENERIC_CALIBRATE_DELAY |
| bool |
| default y |
| |
| config ARCH_MAY_HAVE_PC_FDC |
| bool |
| default y |
| |
| config EMULATED_CMPXCHG |
| bool |
| default y if SPARC32 |
| help |
| Sparc32 does not have a CAS instruction like sparc64. cmpxchg() |
| is emulated, and therefore it is not completely atomic. |
| |
| # Makefile helpers |
| config SPARC32_SMP |
| bool |
| default y |
| depends on SPARC32 && SMP |
| |
| config SPARC64_SMP |
| bool |
| default y |
| depends on SPARC64 && SMP |
| |
| config EARLYFB |
| bool "Support for early boot text console" |
| default y |
| depends on SPARC64 |
| help |
| Say Y here to enable a faster early framebuffer boot console. |
| |
| config SECCOMP |
| bool "Enable seccomp to safely compute untrusted bytecode" |
| depends on SPARC64 && PROC_FS |
| default y |
| help |
| This kernel feature is useful for number crunching applications |
| that may need to compute untrusted bytecode during their |
| execution. By using pipes or other transports made available to |
| the process as file descriptors supporting the read/write |
| syscalls, it's possible to isolate those applications in |
| their own address space using seccomp. Once seccomp is |
| enabled via /proc/<pid>/seccomp, it cannot be disabled |
| and the task is only allowed to execute a few safe syscalls |
| defined by each seccomp mode. |
| |
| If unsure, say Y. Only embedded should say N here. |
| |
| config HOTPLUG_CPU |
| bool "Support for hot-pluggable CPUs" |
| depends on SPARC64 && SMP |
| help |
| Say Y here to experiment with turning CPUs off and on. CPUs |
| can be controlled through /sys/devices/system/cpu/cpu#. |
| Say N if you want to disable CPU hotplug. |
| |
| if SPARC64 |
| source "drivers/cpufreq/Kconfig" |
| endif |
| |
| config US3_MC |
| tristate "UltraSPARC-III Memory Controller driver" |
| depends on SPARC64 |
| default y |
| help |
| This adds a driver for the UltraSPARC-III memory controller. |
| Loading this driver allows exact mnemonic strings to be |
| printed in the event of a memory error, so that the faulty DIMM |
| on the motherboard can be matched to the error. |
| |
| If in doubt, say Y, as this information can be very useful. |
| |
| # Global things across all Sun machines. |
| config GENERIC_LOCKBREAK |
| bool |
| default y |
| depends on SPARC64 && SMP && PREEMPTION |
| |
| config NUMA |
| bool "NUMA support" |
| depends on SPARC64 && SMP |
| |
| config NODES_SHIFT |
| int "Maximum NUMA Nodes (as a power of 2)" |
| range 4 5 if SPARC64 |
| default "5" |
| depends on NEED_MULTIPLE_NODES |
| help |
| Specify the maximum number of NUMA Nodes available on the target |
| system. Increases memory reserved to accommodate various tables. |
| |
| config ARCH_SPARSEMEM_ENABLE |
| def_bool y if SPARC64 |
| select SPARSEMEM_VMEMMAP_ENABLE |
| |
| config ARCH_SPARSEMEM_DEFAULT |
| def_bool y if SPARC64 |
| |
| config FORCE_MAX_ZONEORDER |
| int "Maximum zone order" |
| default "13" |
| help |
| The kernel memory allocator divides physically contiguous memory |
| blocks into "zones", where each zone is a power of two number of |
| pages. This option selects the largest power of two that the kernel |
| keeps in the memory allocator. If you need to allocate very large |
| blocks of physically contiguous memory, then you may need to |
| increase this value. |
| |
| This config option is actually maximum order plus one. For example, |
| a value of 13 means that the largest free memory block is 2^12 pages. |
| |
| if SPARC64 |
| source "kernel/power/Kconfig" |
| endif |
| |
| config SCHED_SMT |
| bool "SMT (Hyperthreading) scheduler support" |
| depends on SPARC64 && SMP |
| default y |
| help |
| SMT scheduler support improves the CPU scheduler's decision making |
| when dealing with SPARC cpus at a cost of slightly increased overhead |
| in some places. If unsure say N here. |
| |
| config SCHED_MC |
| bool "Multi-core scheduler support" |
| depends on SPARC64 && SMP |
| default y |
| help |
| Multi-core scheduler support improves the CPU scheduler's decision |
| making when dealing with multi-core CPU chips at a cost of slightly |
| increased overhead in some places. If unsure say N here. |
| |
| config CMDLINE_BOOL |
| bool "Default bootloader kernel arguments" |
| depends on SPARC64 |
| |
| config CMDLINE |
| string "Initial kernel command string" |
| depends on CMDLINE_BOOL |
| default "console=ttyS0,9600 root=/dev/sda1" |
| help |
| Say Y here if you want to be able to pass default arguments to |
| the kernel. This will be overridden by the bootloader, if you |
| use one (such as SILO). This is most useful if you want to boot |
| a kernel from TFTP, and want default options to be available |
| with having them passed on the command line. |
| |
| NOTE: This option WILL override the PROM bootargs setting! |
| |
| config SUN_PM |
| bool |
| default y if SPARC32 |
| help |
| Enable power management and CPU standby features on supported |
| SPARC platforms. |
| |
| config SPARC_LED |
| tristate "Sun4m LED driver" |
| depends on SPARC32 |
| help |
| This driver toggles the front-panel LED on sun4m systems |
| in a user-specifiable manner. Its state can be probed |
| by reading /proc/led and its blinking mode can be changed |
| via writes to /proc/led |
| |
| config SERIAL_CONSOLE |
| bool |
| depends on SPARC32 |
| default y |
| ---help--- |
| If you say Y here, it will be possible to use a serial port as the |
| system console (the system console is the device which receives all |
| kernel messages and warnings and which allows logins in single user |
| mode). This could be useful if some terminal or printer is connected |
| to that serial port. |
| |
| Even if you say Y here, the currently visible virtual console |
| (/dev/tty0) will still be used as the system console by default, but |
| you can alter that using a kernel command line option such as |
| "console=ttyS1". (Try "man bootparam" or see the documentation of |
| your boot loader (silo) about how to pass options to the kernel at |
| boot time.) |
| |
| If you don't have a graphics card installed and you say Y here, the |
| kernel will automatically use the first serial line, /dev/ttyS0, as |
| system console. |
| |
| If unsure, say N. |
| |
| config SPARC_LEON |
| bool "Sparc Leon processor family" |
| depends on SPARC32 |
| select USB_EHCI_BIG_ENDIAN_MMIO |
| select USB_EHCI_BIG_ENDIAN_DESC |
| select USB_UHCI_BIG_ENDIAN_MMIO |
| select USB_UHCI_BIG_ENDIAN_DESC |
| ---help--- |
| If you say Y here if you are running on a SPARC-LEON processor. |
| The LEON processor is a synthesizable VHDL model of the |
| SPARC-v8 standard. LEON is part of the GRLIB collection of |
| IP cores that are distributed under GPL. GRLIB can be downloaded |
| from www.gaisler.com. You can download a sparc-linux cross-compilation |
| toolchain at www.gaisler.com. |
| |
| if SPARC_LEON |
| menu "U-Boot options" |
| |
| config UBOOT_LOAD_ADDR |
| hex "uImage Load Address" |
| default 0x40004000 |
| ---help--- |
| U-Boot kernel load address, the address in physical address space |
| where u-boot will place the Linux kernel before booting it. |
| This address is normally the base address of main memory + 0x4000. |
| |
| config UBOOT_FLASH_ADDR |
| hex "uImage.o Load Address" |
| default 0x00080000 |
| ---help--- |
| Optional setting only affecting the uImage.o ELF-image used to |
| download the uImage file to the target using a ELF-loader other than |
| U-Boot. It may for example be used to download an uImage to FLASH with |
| the GRMON utility before even starting u-boot. |
| |
| config UBOOT_ENTRY_ADDR |
| hex "uImage Entry Address" |
| default 0xf0004000 |
| ---help--- |
| Do not change this unless you know what you're doing. This is |
| hardcoded by the SPARC32 and LEON port. |
| |
| This is the virtual address u-boot jumps to when booting the Linux |
| Kernel. |
| |
| endmenu |
| endif |
| |
| endmenu |
| |
| menu "Bus options (PCI etc.)" |
| config SBUS |
| bool |
| default y |
| |
| config SBUSCHAR |
| bool |
| default y |
| |
| config SUN_LDOMS |
| bool "Sun Logical Domains support" |
| depends on SPARC64 |
| help |
| Say Y here is you want to support virtual devices via |
| Logical Domains. |
| |
| config PCIC_PCI |
| bool |
| depends on PCI && SPARC32 && !SPARC_LEON |
| default y |
| |
| config LEON_PCI |
| bool |
| depends on PCI && SPARC_LEON |
| default y |
| |
| config SPARC_GRPCI1 |
| bool "GRPCI Host Bridge Support" |
| depends on LEON_PCI |
| default y |
| help |
| Say Y here to include the GRPCI Host Bridge Driver. The GRPCI |
| PCI host controller is typically found in GRLIB SPARC32/LEON |
| systems. The driver has one property (all_pci_errors) controlled |
| from the bootloader that makes the GRPCI to generate interrupts |
| on detected PCI Parity and System errors. |
| |
| config SPARC_GRPCI2 |
| bool "GRPCI2 Host Bridge Support" |
| depends on LEON_PCI |
| default y |
| help |
| Say Y here to include the GRPCI2 Host Bridge Driver. |
| |
| config SUN_OPENPROMFS |
| tristate "Openprom tree appears in /proc/openprom" |
| help |
| If you say Y, the OpenPROM device tree will be available as a |
| virtual file system, which you can mount to /proc/openprom by "mount |
| -t openpromfs none /proc/openprom". |
| |
| To compile the /proc/openprom support as a module, choose M here: the |
| module will be called openpromfs. |
| |
| Only choose N if you know in advance that you will not need to modify |
| OpenPROM settings on the running system. |
| |
| # Makefile helpers |
| config SPARC64_PCI |
| bool |
| default y |
| depends on SPARC64 && PCI |
| |
| config SPARC64_PCI_MSI |
| bool |
| default y |
| depends on SPARC64_PCI && PCI_MSI |
| |
| endmenu |
| |
| config COMPAT |
| bool |
| depends on SPARC64 |
| default y |
| select COMPAT_BINFMT_ELF |
| select HAVE_UID16 |
| select ARCH_WANT_OLD_COMPAT_IPC |
| select COMPAT_OLD_SIGACTION |
| |
| config SYSVIPC_COMPAT |
| bool |
| depends on COMPAT && SYSVIPC |
| default y |
| |
| source "drivers/sbus/char/Kconfig" |