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55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Leif Lindholm <leif.lindholm@linaro.org>
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Date: Mon, 25 Jun 2018 18:01:28 +0100
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Subject: [PATCH] commands/file: Use definitions from arm/linux.h
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Clean up code for matching IS_ARM slightly by making use of struct
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linux_arm_kernel_header and GRUB_LINUX_ARM_MAGIC_SIGNATURE.
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Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/commands/file.c | 17 ++++++++---------
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1 file changed, 8 insertions(+), 9 deletions(-)
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diff --git a/grub-core/commands/file.c b/grub-core/commands/file.c
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index 63c84499bab..ab0c9fb9694 100644
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--- a/grub-core/commands/file.c
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+++ b/grub-core/commands/file.c
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@@ -27,6 +27,7 @@
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#include <grub/elf.h>
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#include <grub/xen_file.h>
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#include <grub/efi/pe32.h>
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+#include <grub/arm/linux.h>
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#include <grub/i386/linux.h>
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#include <grub/xnu.h>
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#include <grub/machoload.h>
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@@ -383,21 +384,19 @@ grub_cmd_file (grub_extcmd_context_t ctxt, int argc, char **args)
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}
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case IS_ARM_LINUX:
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{
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- grub_uint32_t sig, sig_pi;
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- if (grub_file_read (file, &sig_pi, 4) != 4)
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+ struct linux_arm_kernel_header lh;
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+
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+ if (grub_file_read (file, &lh, sizeof (lh)) != sizeof (lh))
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break;
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- /* Raspberry pi. */
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- if (sig_pi == grub_cpu_to_le32_compile_time (0xea000006))
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+ /* Short forward branch in A32 state (for Raspberry pi kernels). */
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+ if (lh.code0 == grub_cpu_to_le32_compile_time (0xea000006))
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{
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ret = 1;
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break;
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}
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- if (grub_file_seek (file, 0x24) == (grub_size_t) -1)
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- break;
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- if (grub_file_read (file, &sig, 4) != 4)
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- break;
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- if (sig == grub_cpu_to_le32_compile_time (0x016f2818))
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+ if (lh.magic ==
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+ grub_cpu_to_le32_compile_time (GRUB_LINUX_ARM_MAGIC_SIGNATURE))
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{
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ret = 1;
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break;
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