58 lines
1.3 KiB
Diff
58 lines
1.3 KiB
Diff
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From eeb898078a9c5a97b4684bb1182a63c203d9b11e Mon Sep 17 00:00:00 2001
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From: Jason Montleon <jason@montleon.com>
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Date: Tue, 25 Jun 2024 23:11:38 -0400
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Subject: [PATCH 5/7] Implement __riscv_flush_icache
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Signed-off-by: Jason Montleon <jason@montleon.com>
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---
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lib/Makefile | 1 +
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lib/riscv64/cache.S | 10 ++++++++++
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lib/riscv64/edk2asm.h | 6 ++++++
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3 files changed, 17 insertions(+)
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create mode 100644 lib/riscv64/cache.S
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create mode 100644 lib/riscv64/edk2asm.h
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diff --git a/lib/Makefile b/lib/Makefile
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index 0b79246..2846167 100644
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--- a/lib/Makefile
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+++ b/lib/Makefile
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@@ -32,6 +32,7 @@ DEFINES += -DMDE_CPU_ARM
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endif
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ifeq ($(ARCH),riscv64)
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DEFINES += -DMDE_CPU_RISCV64
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+LIBFILES += $(ARCH)/cache.o
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endif
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LDFLAGS = -nostdlib -znocombreloc
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diff --git a/lib/riscv64/cache.S b/lib/riscv64/cache.S
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new file mode 100644
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index 0000000..b31d6d7
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--- /dev/null
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+++ b/lib/riscv64/cache.S
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@@ -0,0 +1,10 @@
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+#include "edk2asm.h"
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+
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+ .file "cache.S"
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+ .text
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+
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+GCC_ASM_EXPORT(__riscv_flush_icache)
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+
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+ASM_PFX(__riscv_flush_icache):
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+ fence.i
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+ ret
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diff --git a/lib/riscv64/edk2asm.h b/lib/riscv64/edk2asm.h
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new file mode 100644
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index 0000000..9515eaf
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--- /dev/null
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+++ b/lib/riscv64/edk2asm.h
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@@ -0,0 +1,6 @@
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+
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+#define ASM_PFX(x) x
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+#define GCC_ASM_EXPORT(x) \
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+ .globl x ; \
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+ .type x, %function
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+
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--
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2.44.0
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