summaryrefslogtreecommitdiffstats
path: root/arch/sparc/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/Kconfig')
-rw-r--r--arch/sparc/Kconfig495
1 files changed, 495 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
new file mode 100644
index 0000000000..49849790e6
--- /dev/null
+++ b/arch/sparc/Kconfig
@@ -0,0 +1,495 @@
+# 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 DMA_OPS
+ select OF
+ select OF_PROMTREE
+ select HAVE_ASM_MODVERSIONS
+ select HAVE_ARCH_KGDB if !SMP || SPARC64
+ select HAVE_ARCH_TRACEHOOK
+ select HAVE_ARCH_SECCOMP if SPARC64
+ 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 HAS_IOPORT
+ select HAVE_HARDLOCKUP_DETECTOR_SPARC64 if SPARC64
+ select HAVE_CBPF_JIT if SPARC32
+ select HAVE_EBPF_JIT if SPARC64
+ select HAVE_DEBUG_BUGVERBOSE
+ select GENERIC_SMP_IDLE_THREAD
+ select MODULES_USE_ELF_RELA
+ select PCI_SYSCALL if PCI
+ select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
+ 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
+ select TRACE_IRQFLAGS_SUPPORT
+
+config SPARC32
+ def_bool !64BIT
+ select ARCH_32BIT_OFF_T
+ select ARCH_HAS_CPU_FINALIZE_INIT if !SMP
+ select ARCH_HAS_SYNC_DMA_FOR_CPU
+ select CLZ_TAB
+ select DMA_DIRECT_REMAP
+ select GENERIC_ATOMIC64
+ select HAVE_UID16
+ select LOCK_MM_AND_FIND_VMA
+ select OLD_SIGACTION
+ select ZONE_DMA
+
+config SPARC64
+ def_bool 64BIT
+ select ALTERNATE_USER_ADDRESS_SPACE
+ select HAVE_FUNCTION_TRACER
+ select HAVE_FUNCTION_GRAPH_TRACER
+ select HAVE_KRETPROBES
+ select HAVE_KPROBES
+ select MMU_GATHER_RCU_TABLE_FREE if SMP
+ select MMU_GATHER_MERGE_VMAS
+ select MMU_GATHER_NO_FLUSH_CACHE
+ select HAVE_ARCH_TRANSPARENT_HUGEPAGE
+ select HAVE_DYNAMIC_FTRACE
+ select HAVE_FTRACE_MCOUNT_RECORD
+ select HAVE_SYSCALL_TRACEPOINTS
+ select HAVE_CONTEXT_TRACKING_USER
+ 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 ARCH_HAVE_NMI_SAFE_CMPXCHG
+ select HAVE_C_RECORDMCOUNT
+ select HAVE_ARCH_AUDITSYSCALL
+ select ARCH_SUPPORTS_ATOMIC_RMW
+ select ARCH_SUPPORTS_DEBUG_PAGEALLOC
+ 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
+ select HAVE_SOFTIRQ_ON_OWN_STACK
+ select HAVE_SETUP_PER_CPU_AREA
+ select NEED_PER_CPU_EMBED_FIRST_CHUNK
+ select NEED_PER_CPU_PAGE_FIRST_CHUNK
+
+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 MMU
+ bool
+ default y
+
+config HIGHMEM
+ bool
+ default y if SPARC32
+ select KMAP_LOCAL
+
+config GENERIC_ISA_DMA
+ bool
+ default y if SPARC32
+
+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 <https://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 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 NUMA
+ 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 ARCH_FORCE_MAX_ORDER
+ int "Order of maximal physically contiguous allocations"
+ default "12"
+ help
+ The kernel page allocator limits the size of maximal physically
+ contiguous allocations. The limit is called MAX_ORDER and it
+ defines the maximal power of two of number of pages that can be
+ allocated as a single contiguous block. This option allows
+ overriding the default setting when ability to allocate very
+ large blocks of physically contiguous memory is required.
+
+ Don't change if unsure.
+
+if SPARC64 || COMPILE_TEST
+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 HAVE_UID16
+ select ARCH_WANT_OLD_COMPAT_IPC
+ select COMPAT_OLD_SIGACTION
+
+source "drivers/sbus/char/Kconfig"