diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bc7598fc5f00..ca3b5541ae93 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -26,15 +26,15 @@ config RISCV select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK - select GENERIC_STRNCPY_FROM_USER - select GENERIC_STRNLEN_USER + select GENERIC_STRNCPY_FROM_USER if MMU + select GENERIC_STRNLEN_USER if MMU select GENERIC_SMP_IDLE_THREAD select GENERIC_ATOMIC64 if !64BIT select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_SECCOMP_FILTER select HAVE_ASM_MODVERSIONS select HAVE_MEMBLOCK_NODE_MAP - select HAVE_DMA_CONTIGUOUS + select HAVE_DMA_CONTIGUOUS if MMU select HAVE_FUTEX_CMPXCHG if FUTEX select HAVE_PERF_EVENTS select HAVE_PERF_REGS @@ -51,6 +51,7 @@ config RISCV select PCI_DOMAINS_GENERIC if PCI select PCI_MSI if PCI select RISCV_TIMER + select UACCESS_MEMCPY if !MMU select GENERIC_IRQ_MULTI_HANDLER select GENERIC_ARCH_TOPOLOGY if SMP select ARCH_HAS_PTE_SPECIAL @@ -61,7 +62,7 @@ config RISCV select ARCH_WANT_HUGE_PMD_SHARE if 64BIT select SPARSEMEM_STATIC if 32BIT select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU - select HAVE_ARCH_MMAP_RND_BITS + select HAVE_ARCH_MMAP_RND_BITS if MMU config ARCH_MMAP_RND_BITS_MIN default 18 if 64BIT @@ -73,8 +74,23 @@ config ARCH_MMAP_RND_BITS_MAX default 24 if 64BIT # SV39 based default 17 +# set if we run in machine mode, cleared if we run in supervisor mode +config RISCV_M_MODE + bool + default !MMU + +# set if we are running in S-mode and can use SBI calls +config RISCV_SBI + bool + depends on !RISCV_M_MODE + default y + config MMU - def_bool y + bool "MMU-based Paged Memory Management Support" + default y + help + Select if you want MMU-based virtualised addressing space + support by paged memory management. If unsure, say 'Y'. config ZONE_DMA32 bool @@ -93,6 +109,7 @@ config PA_BITS config PAGE_OFFSET hex default 0xC0000000 if 32BIT && MAXPHYSMEM_2GB + default 0x80000000 if 64BIT && !MMU default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB @@ -136,7 +153,7 @@ config GENERIC_HWEIGHT def_bool y config FIX_EARLYCON_MEM - def_bool y + def_bool CONFIG_MMU config PGTABLE_LEVELS int @@ -161,6 +178,7 @@ config ARCH_RV32I select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 + select MMU config ARCH_RV64I bool "RV64I" @@ -169,9 +187,9 @@ config ARCH_RV64I 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 + select HAVE_DYNAMIC_FTRACE if MMU + select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE + select SWIOTLB if MMU endchoice |