diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 8f10a2fb5f86..5468ccfd7223 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -23,6 +23,7 @@ config RISCV select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEBUG_WX + select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE @@ -58,10 +59,11 @@ config RISCV select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU select ARCH_SUPPORTS_PER_VMA_LOCK if MMU select ARCH_SUPPORTS_SHADOW_CALL_STACK if HAVE_SHADOW_CALL_STACK + select ARCH_USE_CMPXCHG_LOCKREF if 64BIT select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USES_CFI_TRAPS if CFI_CLANG - select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH if SMP && MMU + select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH if MMU select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_GENERAL_HUGETLB if !RISCV_ISA_SVNAPOT @@ -72,7 +74,7 @@ config RISCV select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU select BUILDTIME_TABLE_SORT if MMU - select CLINT_TIMER if !MMU + select CLINT_TIMER if RISCV_M_MODE select CLONE_BACKWARDS select COMMON_CLK select CPU_PM if CPU_IDLE || HIBERNATION || SUSPEND @@ -156,6 +158,7 @@ config RISCV select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_RETHOOK if !XIP_KERNEL select HAVE_RSEQ + select HAVE_RUST if 64BIT select HAVE_SAMPLE_FTRACE_DIRECT select HAVE_SAMPLE_FTRACE_DIRECT_MULTI select HAVE_STACKPROTECTOR @@ -232,8 +235,12 @@ config ARCH_MMAP_RND_COMPAT_BITS_MAX # set if we run in machine mode, cleared if we run in supervisor mode config RISCV_M_MODE - bool - default !MMU + bool "Build a kernel that runs in machine mode" + depends on !MMU + default y + help + Select this option if you want to run the kernel in M-mode, + without the assistance of any other firmware. # set if we are running in S-mode and can use SBI calls config RISCV_SBI @@ -250,8 +257,9 @@ config MMU config PAGE_OFFSET hex - default 0xC0000000 if 32BIT && MMU - default 0x80000000 if !MMU + default 0x80000000 if !MMU && RISCV_M_MODE + default 0x80200000 if !MMU + default 0xc0000000 if 32BIT default 0xff60000000000000 if 64BIT config KASAN_SHADOW_OFFSET @@ -599,7 +607,6 @@ config TOOLCHAIN_HAS_VECTOR_CRYPTO config RISCV_ISA_ZBB bool "Zbb extension support for bit manipulation instructions" depends on TOOLCHAIN_HAS_ZBB - depends on MMU depends on RISCV_ALTERNATIVE default y help @@ -631,7 +638,6 @@ config RISCV_ISA_ZICBOM config RISCV_ISA_ZICBOZ bool "Zicboz extension support for faster zeroing of memory" - depends on MMU depends on RISCV_ALTERNATIVE default y help |