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| author | Yimin Gu <ustcymgu@gmail.com> | 2023-03-01 01:26:56 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-28 01:27:46 +0200 |
| commit | b5e2c507b06c9d36411845149162a804ae7b04a9 (patch) | |
| tree | 44dde3f5b5fad9bfb80af48e86395ffb40958ed6 /arch/riscv | |
| parent | Linux 6.3-rc1 (diff) | |
| download | linux-b5e2c507b06c9d36411845149162a804ae7b04a9.tar.xz linux-b5e2c507b06c9d36411845149162a804ae7b04a9.zip | |
riscv: Kconfig: Allow RV32 to build with no MMU
Some RISC-V 32bit cores do not have an MMU, and the kernel should be
able to build for them. This patch enables the RV32 to be built with
no MMU support.
Signed-off-by: Yimin Gu <ustcymgu@gmail.com>
CC: Jesse Taube <Mr.Bossman075@gmail.com>
Tested-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230301002657.352637-3-Mr.Bossman075@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/Kconfig | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index c5e42cc37604..d1f661425790 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -177,8 +177,8 @@ config MMU config PAGE_OFFSET hex - default 0xC0000000 if 32BIT - default 0x80000000 if 64BIT && !MMU + default 0xC0000000 if 32BIT && MMU + default 0x80000000 if !MMU default 0xff60000000000000 if 64BIT config KASAN_SHADOW_OFFSET @@ -279,7 +279,6 @@ config ARCH_RV32I select GENERIC_LIB_ASHRDI3 select GENERIC_LIB_LSHRDI3 select GENERIC_LIB_UCMPDI2 - select MMU config ARCH_RV64I bool "RV64I" |