[Buildroot] [PATCH v4 3/9] arch/config: Make RISC-V 64-bits MMU optional
Damien Le Moal
damien.lemoal at wdc.com
Mon Aug 30 04:40:54 UTC 2021
Linux supports No-MMU RISC-V 64-bits since kernel version 5.8. Make
MMU optional to enable building for RISC-V 64-bits boards that do not
have one. MMU use of RISC-V 32-bits builds remains mandatory for now.
Signed-off-by: Damien Le Moal <damien.lemoal at wdc.com>
Reviewed-by: Alistair Francis <alistair.francis at wdc.com>
---
arch/Config.in | 1 -
arch/Config.in.riscv | 2 ++
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/Config.in b/arch/Config.in
index 1853e26bb4..2e95b6e76c 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -210,7 +210,6 @@ config BR2_powerpc64le
config BR2_riscv
bool "RISCV"
- select BR2_ARCH_HAS_MMU_MANDATORY
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
help
RISC-V is an open, free Instruction Set Architecture created
diff --git a/arch/Config.in.riscv b/arch/Config.in.riscv
index 1fc20e5de7..e6436d7c39 100644
--- a/arch/Config.in.riscv
+++ b/arch/Config.in.riscv
@@ -71,10 +71,12 @@ choice
config BR2_RISCV_32
bool "32-bit"
+ select BR2_ARCH_HAS_MMU_MANDATORY
config BR2_RISCV_64
bool "64-bit"
select BR2_ARCH_IS_64
+ select BR2_ARCH_HAS_MMU_OPTIONAL
endchoice
--
2.31.1
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