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Diffstat (limited to 'arch/sparc/Kconfig')
| -rw-r--r-- | arch/sparc/Kconfig | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig new file mode 100644 index 000000000..49849790e --- /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" |