58 lines
1.9 KiB
Diff
58 lines
1.9 KiB
Diff
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From 337b3d963d28b3544e8817428fb68ca559613a39 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Thu, 9 Sep 2021 10:59:28 -0400
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Subject: [PATCH 2/2] Arm: check for the PE magic for the compiled arch
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In "arm64: Fix EFI loader kernel image allocation", Ben fixed the kernel
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alignment to match the alignment given in the PE header. In doing so, a
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check for valid PE magic was added, which was hard-coded to the value
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seen on Aarch64 (GRUB_PE32_PE64_MAGIC).
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Unfortunately, this code is shared between 64-bit and 32-bit, and so
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that value broke 32-bit Arm systems.
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This patch adds a constant definition for GRUB_PE32_PEXX_MAGIC, which is
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either GRUB_PE32_PE64_MAGIC or GRUB_PE32_PE32_MAGIC, depending on which
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platform is being built, and uses it in the header magic check.
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Resolves: rhbz#2000756
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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grub-core/loader/arm64/efi/linux.c | 2 +-
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include/grub/arm/linux.h | 1 +
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include/grub/arm64/linux.h | 1 +
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3 files changed, 3 insertions(+), 1 deletion(-)
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--- a/grub-core/loader/arm64/efi/linux.c
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+++ b/grub-core/loader/arm64/efi/linux.c
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@@ -376,7 +376,7 @@
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pe = (void *)((unsigned long)kernel + lh->hdr_offset);
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- if (pe->opt.magic != GRUB_PE32_PE64_MAGIC)
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+ if (pe->opt.magic != GRUB_PE32_PEXX_MAGIC)
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return grub_error(GRUB_ERR_BAD_OS, "Invalid PE optional header magic");
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*total_size = pe->opt.image_size;
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--- a/include/grub/arm/linux.h
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+++ b/include/grub/arm/linux.h
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@@ -33,6 +33,7 @@
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};
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#if defined(__arm__)
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+# define GRUB_PE32_PEXX_MAGIC GRUB_PE32_PE32_MAGIC
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# define grub_armxx_linux_pe_header grub_arm_linux_pe_header
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#endif
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--- a/include/grub/arm64/linux.h
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+++ b/include/grub/arm64/linux.h
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@@ -33,6 +33,7 @@
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#if defined(__aarch64__)
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# define GRUB_LINUX_ARMXX_MAGIC_SIGNATURE GRUB_LINUX_ARM64_MAGIC_SIGNATURE
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+# define GRUB_PE32_PEXX_MAGIC GRUB_PE32_PE64_MAGIC
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# define grub_armxx_linux_pe_header grub_arm64_linux_pe_header
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#endif
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