Andrew Lukoshko
845e29e580
- Update shim from 15.8 to 16.1 - Replace separate gnu-efi 4.0.0 tarball with patch-based approach (shim 16.1 bundles gnu-efi from rhboot, apply riscv64 support as patch) - Add 0001-Add-RISC-V-64-support-to-gnu-efi.patch (ncroxon/gnu-efi 4.0.0 riscv64 files adapted for rhboot/gnu-efi shim-16.1) - Add 0008-Fix-additional-signedness-warnings-for-riscv64.patch - Remove 0001-Adopt-modern-ReallocatePool-ABI.patch (not needed with rhboot's gnu-efi) - Rebase all patches for 16.1 - Update SBAT, commit ID, and source checksums
58 lines
1.3 KiB
Diff
58 lines
1.3 KiB
Diff
From 4d8dd652136cc9f4408a886e9390670d9b415c70 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] 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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2.43.7
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