riscv: Make A ISA extension selectable
Make the Atomic (A) ISA extension selectable. Thus CPUs such as
Ibex without the A extension can be supported.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index fa3b016..c5859c5 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -308,7 +308,10 @@
endmenu
config RISCV_ISA_A
- def_bool y
+ bool "Standard extension for Atomic Instructions"
+ default y
+ help
+ Adds "A" to the ISA string passed to the compiler.
config DMA_ADDR_T_64BIT
bool