diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 63 |
1 files changed, 27 insertions, 36 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index cd4fd85fde84..f12680c9b947 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -3,8 +3,16 @@ # see Documentation/kbuild/kconfig-language.txt. # +config 64BIT + bool + +config 32BIT + bool + config RISCV def_bool y + # even on 32-bit, physical (and DMA) addresses are > 32-bits + select PHYS_ADDR_T_64BIT select OF select OF_EARLY_FLATTREE select OF_IRQ @@ -22,9 +30,9 @@ config RISCV select GENERIC_ATOMIC64 if !64BIT || !RISCV_ISA_A select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP - select HAVE_DMA_API_DEBUG select HAVE_DMA_CONTIGUOUS select HAVE_GENERIC_DMA_COHERENT + select HAVE_PERF_EVENTS select IRQ_DOMAIN select NO_BOOTMEM select RISCV_ISA_A if SMP @@ -35,20 +43,14 @@ config RISCV select THREAD_INFO_IN_TASK select RISCV_TIMER select GENERIC_IRQ_MULTI_HANDLER + select ARCH_HAS_PTE_SPECIAL config MMU def_bool y -# even on 32-bit, physical (and DMA) addresses are > 32-bits -config ARCH_PHYS_ADDR_T_64BIT - def_bool y - config ZONE_DMA32 bool - default y - -config ARCH_DMA_ADDR_T_64BIT - def_bool y + default y if 64BIT config PAGE_OFFSET hex @@ -101,21 +103,20 @@ choice config ARCH_RV32I bool "RV32I" - select CPU_SUPPORTS_32BIT_KERNEL select 32BIT - select GENERIC_ASHLDI3 - select GENERIC_ASHRDI3 - select GENERIC_LSHRDI3 + select GENERIC_LIB_ASHLDI3 + select GENERIC_LIB_ASHRDI3 + select GENERIC_LIB_LSHRDI3 config ARCH_RV64I bool "RV64I" - select CPU_SUPPORTS_64BIT_KERNEL select 64BIT select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_GRAPH_TRACER select HAVE_FTRACE_MCOUNT_RECORD select HAVE_DYNAMIC_FTRACE select HAVE_DYNAMIC_FTRACE_WITH_REGS + select SWIOTLB endchoice @@ -171,11 +172,6 @@ config NR_CPUS depends on SMP default "8" -config CPU_SUPPORTS_32BIT_KERNEL - bool -config CPU_SUPPORTS_64BIT_KERNEL - bool - choice prompt "CPU Tuning" default TUNE_GENERIC @@ -198,27 +194,22 @@ config RISCV_ISA_C config RISCV_ISA_A def_bool y -endmenu - -menu "Kernel type" +menu "supported PMU type" + depends on PERF_EVENTS -choice - prompt "Kernel code model" - default 64BIT - -config 32BIT - bool "32-bit kernel" - depends on CPU_SUPPORTS_32BIT_KERNEL +config RISCV_BASE_PMU + bool "Base Performance Monitoring Unit" + def_bool y help - Select this option to build a 32-bit kernel. + A base PMU that serves as a reference implementation and has limited + feature of perf. It can run on any RISC-V machines so serves as the + fallback, but this option can also be disable to reduce kernel size. -config 64BIT - bool "64-bit kernel" - depends on CPU_SUPPORTS_64BIT_KERNEL - help - Select this option to build a 64-bit kernel. +endmenu -endchoice +endmenu + +menu "Kernel type" source "mm/Kconfig" |