diff options
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index b85492c42ccb..babc8a0d3d2e 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -26,14 +26,14 @@ 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_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 @@ -50,6 +50,7 @@ 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 @@ -60,7 +61,7 @@ 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 @@ -75,6 +76,7 @@ config ARCH_MMAP_RND_BITS_MAX # 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 @@ -83,7 +85,11 @@ config RISCV_SBI 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 @@ -102,6 +108,7 @@ 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 @@ -145,7 +152,7 @@ config GENERIC_HWEIGHT def_bool y config FIX_EARLYCON_MEM - def_bool y + def_bool CONFIG_MMU config PGTABLE_LEVELS int @@ -170,6 +177,7 @@ config ARCH_RV32I select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 + select MMU config ARCH_RV64I bool "RV64I" @@ -178,9 +186,9 @@ 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 |