Implement __riscv_flush_icache

jmontleon · andreabolognani · commit eae94d77ca8e · 2025-09-26T17:26:11.000+02:00
Signed-off-by: Jason Montleon &lt;jason@montleon.com&gt;
diff --git a/lib/Makefile b/lib/Makefile
@@ -32,6 +32,7 @@ DEFINES		+= -DMDE_CPU_ARM
 endif
 ifeq ($(ARCH),riscv64)
 DEFINES		+= -DMDE_CPU_RISCV64
+LIBFILES += $(ARCH)/cache.o
 endif
 
 LDFLAGS		= -nostdlib -znocombreloc
diff --git a/lib/riscv64/cache.S b/lib/riscv64/cache.S
@@ -0,0 +1,10 @@
+#include "edk2asm.h"
+
+       .file   "cache.S"
+       .text
+
+GCC_ASM_EXPORT(__riscv_flush_icache)
+
+ASM_PFX(__riscv_flush_icache):
+       fence.i
+       ret
diff --git a/lib/riscv64/edk2asm.h b/lib/riscv64/edk2asm.h
@@ -0,0 +1,6 @@
+
+#define ASM_PFX(x)			x
+#define GCC_ASM_EXPORT(x)		\
+	.globl		x		; \
+	.type		x, %function
+
