Change in coreboot[master]: use __riscv_atomic to check support A extended.

[Anonymous Coward (Code Review)]

Anonymous Coward #1001664 has uploaded this change for review. ( https://review.coreboot.org/27300

Change subject: use __riscv_atomic to check support A extended.
......................................................................

use __riscv_atomic to check support A extended.

GCC pre-defined some macros for detecting ISA extensions.
We should use these macros to detect ISA features.

Change-Id: I5782cdd1bf64b0161c58d789f46389dccfe44475
Signed-off-by: XiangWang 
---
M src/arch/riscv/include/atomic.h
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/27300/1

diff --git a/src/arch/riscv/include/atomic.h b/src/arch/riscv/include/atomic.h
index bc739fb..15702e4 100644
--- a/src/arch/riscv/include/atomic.h
+++ b/src/arch/riscv/include/atomic.h
@@ -39,7 +39,7 @@
 #define atomic_set(ptr, val) (*(volatile typeof(*(ptr)) *)(ptr) = val)
 #define atomic_read(ptr) (*(volatile typeof(*(ptr)) *)(ptr))

-#ifdef PK_ENABLE_ATOMICS
+#ifdef __riscv_atomic
 # define atomic_add(ptr, inc) __sync_fetch_and_add(ptr, inc)
 # define atomic_swap(ptr, swp) __sync_lock_test_and_set(ptr, swp)
 # define atomic_cas(ptr, cmp, swp) __sync_val_compare_and_swap(ptr, cmp, swp)