diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 53 |
1 files changed, 38 insertions, 15 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 897ae28abf81..3d49317f5019 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -38,7 +38,7 @@ config RISCV select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU select ARCH_SUPPORTS_HUGETLBFS if MMU - select ARCH_SUPPORTS_PAGE_TABLE_CHECK + select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU @@ -86,7 +86,7 @@ config RISCV select HAVE_ARCH_THREAD_STRUCT_WHITELIST select HAVE_ARCH_VMAP_STACK if MMU && 64BIT select HAVE_ASM_MODVERSIONS - select HAVE_CONTEXT_TRACKING + select HAVE_CONTEXT_TRACKING_USER select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS if MMU select HAVE_EBPF_JIT if MMU @@ -232,6 +232,21 @@ source "arch/riscv/Kconfig.erratas" menu "Platform type" +config NONPORTABLE + bool "Allow configurations that result in non-portable kernels" + help + RISC-V kernel binaries are compatible between all known systems + whenever possible, but there are some use cases that can only be + satisfied by configurations that result in kernel binaries that are + not portable between systems. + + Selecting N does not guarantee kernels will be portable to all known + systems. Selecting any of the options guarded by NONPORTABLE will + result in kernel binaries that are unlikely to be portable between + systems. + + If unsure, say N. + choice prompt "Base ISA" default ARCH_RV64I @@ -241,6 +256,7 @@ choice config ARCH_RV32I bool "RV32I" + depends on NONPORTABLE select 32BIT select GENERIC_LIB_ASHLDI3 select GENERIC_LIB_ASHRDI3 @@ -361,11 +377,11 @@ config RISCV_ISA_C bool "Emit compressed instructions when building Linux" default y help - Adds "C" to the ISA subsets that the toolchain is allowed to emit - when building Linux, which results in compressed instructions in the - Linux binary. + Adds "C" to the ISA subsets that the toolchain is allowed to emit + when building Linux, which results in compressed instructions in the + Linux binary. - If you don't know what to do here, say Y. + If you don't know what to do here, say Y. config RISCV_ISA_SVPBMT bool "SVPBMT extension support" @@ -393,7 +409,7 @@ config CC_HAS_ZICBOM config RISCV_ISA_ZICBOM bool "Zicbom extension support for non-coherent DMA operation" depends on CC_HAS_ZICBOM - depends on !XIP_KERNEL + depends on !XIP_KERNEL && MMU select RISCV_DMA_NONCOHERENT select RISCV_ALTERNATIVE default y @@ -416,7 +432,7 @@ config FPU If you don't know what to do here, say Y. -endmenu +endmenu # "Platform type" menu "Kernel features" @@ -505,7 +521,7 @@ config COMPAT If you want to execute 32-bit userspace applications, say Y. -endmenu +endmenu # "Kernel features" menu "Boot options" @@ -541,7 +557,6 @@ config CMDLINE_EXTEND cases where the provided arguments are insufficient and you don't want to or cannot modify them. - config CMDLINE_FORCE bool "Always use the default kernel command string" help @@ -584,6 +599,7 @@ config STACKPROTECTOR_PER_TASK config PHYS_RAM_BASE_FIXED bool "Explicitly specified physical RAM address" + depends on NONPORTABLE default n config PHYS_RAM_BASE @@ -597,7 +613,7 @@ config PHYS_RAM_BASE config XIP_KERNEL bool "Kernel Execute-In-Place from ROM" - depends on MMU && SPARSEMEM + depends on MMU && SPARSEMEM && NONPORTABLE # This prevents XIP from being enabled by all{yes,mod}config, which # fail to build since XIP doesn't support large kernels. depends on !COMPILE_TEST @@ -633,23 +649,30 @@ config XIP_PHYS_ADDR be linked for and stored to. This address is dependent on your own flash usage. -endmenu +endmenu # "Boot options" config BUILTIN_DTB bool - depends on OF + depends on OF && NONPORTABLE default y if XIP_KERNEL +config PORTABLE + bool + default !NONPORTABLE + select EFI + select OF + select MMU + menu "Power management options" source "kernel/power/Kconfig" -endmenu +endmenu # "Power management options" menu "CPU Power Management" source "drivers/cpuidle/Kconfig" -endmenu +endmenu # "CPU Power Management" source "arch/riscv/kvm/Kconfig" |