diff options
Diffstat (limited to 'arch/openrisc/Kconfig')
| -rw-r--r-- | arch/openrisc/Kconfig | 208 |
1 files changed, 147 insertions, 61 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 1e95920b0737..9156635dd264 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -1,60 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0 # # For a description of the syntax of this configuration file, -# see Documentation/kbuild/kconfig-language.txt. +# see Documentation/kbuild/kconfig-language.rst. # config OPENRISC def_bool y + select ARCH_32BIT_OFF_T + select ARCH_HAS_DMA_SET_UNCACHED + select ARCH_HAS_DMA_CLEAR_UNCACHED + select ARCH_HAS_SYNC_DMA_FOR_DEVICE + select GENERIC_BUILTIN_DTB + select COMMON_CLK select OF select OF_EARLY_FLATTREE select IRQ_DOMAIN - select HANDLE_DOMAIN_IRQ - select HAVE_MEMBLOCK select GPIOLIB - select HAVE_ARCH_TRACEHOOK + select HAVE_ARCH_TRACEHOOK select SPARSE_IRQ select GENERIC_IRQ_CHIP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW - select GENERIC_IOMAP + select GENERIC_PCI_IOMAP + select GENERIC_IOREMAP select GENERIC_CPU_DEVICES + select HAVE_ARCH_JUMP_LABEL + select HAVE_ARCH_JUMP_LABEL_RELATIVE + select HAVE_PCI select HAVE_UID16 + select HAVE_PAGE_SIZE_8KB + select HAVE_REGS_AND_STACK_ACCESS_API + select HAVE_RSEQ select GENERIC_ATOMIC64 - select GENERIC_CLOCKEVENTS - select GENERIC_STRNCPY_FROM_USER - select GENERIC_STRNLEN_USER + select GENERIC_CLOCKEVENTS_BROADCAST + select GENERIC_SMP_IDLE_THREAD select MODULES_USE_ELF_RELA select HAVE_DEBUG_STACKOVERFLOW select OR1K_PIC select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1 - select NO_BOOTMEM - -config MMU + select ARCH_USE_QUEUED_RWLOCKS + select OMPIC if SMP + select PCI_DOMAINS_GENERIC if PCI + select PCI_MSI if PCI + select ARCH_WANT_FRAME_POINTERS + select GENERIC_IRQ_MULTI_HANDLER + select MMU_GATHER_NO_RANGE if MMU + select TRACE_IRQFLAGS_SUPPORT + +config CPU_BIG_ENDIAN def_bool y -config RWSEM_GENERIC_SPINLOCK +config MMU def_bool y -config RWSEM_XCHGADD_ALGORITHM - def_bool n - config GENERIC_HWEIGHT def_bool y config NO_IOPORT_MAP def_bool y -config TRACE_IRQFLAGS_SUPPORT - def_bool y - # For now, use generic checksum functions #These can be reimplemented in assembly later if so inclined config GENERIC_CSUM - def_bool y + def_bool y + +config STACKTRACE_SUPPORT + def_bool y -source "init/Kconfig" +config LOCKDEP_SUPPORT + def_bool y -source "kernel/Kconfig.freezer" +config FIX_EARLYCON_MEM + def_bool y menu "Processor type and features" @@ -69,9 +86,20 @@ config OR1K_1200 endchoice -config OPENRISC_BUILTIN_DTB - string "Builtin DTB" - default "" +config DCACHE_WRITETHROUGH + bool "Have write through data caches" + default n + help + Select this if your implementation features write through data caches. + Selecting 'N' here will allow the kernel to force flushing of data + caches at relevant times. Most OpenRISC implementations support write- + through data caches. + + If unsure say N here + +config BUILTIN_DTB_NAME + string "Builtin DTB" + default "" menu "Class II Instructions" @@ -98,15 +126,86 @@ config OPENRISC_HAVE_INST_DIV default y help Select this if your implementation has a hardware divide instruction + +config OPENRISC_HAVE_INST_CMOV + bool "Have instruction l.cmov for conditional move" + default n + help + This config enables gcc to generate l.cmov instructions when compiling + the kernel which in general will improve performance and reduce the + binary size. + + Select this if your implementation has support for the Class II + l.cmov conistional move instruction. + + Say N if you are unsure. + +config OPENRISC_HAVE_INST_ROR + bool "Have instruction l.ror for rotate right" + default n + help + This config enables gcc to generate l.ror instructions when compiling + the kernel which in general will improve performance and reduce the + binary size. + + Select this if your implementation has support for the Class II + l.ror rotate right instruction. + + Say N if you are unsure. + +config OPENRISC_HAVE_INST_RORI + bool "Have instruction l.rori for rotate right with immediate" + default n + help + This config enables gcc to generate l.rori instructions when compiling + the kernel which in general will improve performance and reduce the + binary size. + + Select this if your implementation has support for the Class II + l.rori rotate right with immediate instruction. + + Say N if you are unsure. + +config OPENRISC_HAVE_INST_SEXT + bool "Have instructions l.ext* for sign extension" + default n + help + This config enables gcc to generate l.ext* instructions when compiling + the kernel which in general will improve performance and reduce the + binary size. + + Select this if your implementation has support for the Class II + l.exths, l.extbs, l.exthz and l.extbz size extend instructions. + + Say N if you are unsure. + endmenu config NR_CPUS - int - default "1" + int "Maximum number of CPUs (2-32)" + range 2 32 + depends on SMP + default "2" + +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. -source kernel/Kconfig.hz -source kernel/Kconfig.preempt -source "mm/Kconfig" + If you don't know what to do here, say N. + +config FPU + bool "FPU support" + default y + help + Say N here if you want to disable all floating-point related procedures + in the kernel and reduce binary size. + + If you don't know what to do here, say Y. + +source "kernel/Kconfig.hz" config OPENRISC_NO_SPR_SR_DSX bool "use SPR_SR_DSX software emulation" if OR1K_1200 @@ -121,14 +220,25 @@ config OPENRISC_NO_SPR_SR_DSX Say N here if you know that your OpenRISC processor has SPR_SR_DSX bit implemented. Say Y if you are unsure. +config OPENRISC_HAVE_SHADOW_GPRS + bool "Support for shadow gpr files" if !SMP + default y if SMP + help + Say Y here if your OpenRISC processor features shadowed + register files. They will in such case be used as a + scratch reg storage on exception entry. + + On SMP systems, this feature is mandatory. + On a unicore system it's safe to say N here if you are unsure. + config CMDLINE - string "Default kernel command string" - default "" - help - On some architectures there is currently no way for the boot loader - to pass arguments to the kernel. For these architectures, you should - supply some command-line options at build time by entering them - here. + string "Default kernel command string" + default "" + help + On some architectures there is currently no way for the boot loader + to pass arguments to the kernel. For these architectures, you should + supply some command-line options at build time by entering them + here. menu "Debugging options" @@ -146,34 +256,10 @@ config OPENRISC_ESR_EXCEPTION_BUG_CHECK default n help This option enables some checks that might expose some problems - in kernel. + in kernel. Say N if you are unsure. endmenu endmenu - -menu "Executable file formats" - -source "fs/Kconfig.binfmt" - -endmenu - -source "net/Kconfig" - -source "drivers/Kconfig" - -source "fs/Kconfig" - -source "security/Kconfig" - -source "crypto/Kconfig" - -source "lib/Kconfig" - -menu "Kernel hacking" - -source "lib/Kconfig.debug" - -endmenu |