forked from pool/u-boot
46 lines
1.4 KiB
Diff
46 lines
1.4 KiB
Diff
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From 9f23c6ee2d69f89b353483dfa887414dd8c8b73b Mon Sep 17 00:00:00 2001
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From: Alexander Graf <agraf@suse.de>
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Date: Wed, 18 May 2016 00:51:35 +0200
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Subject: [PATCH] efi_loader: Clean up system table on exit
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We put the system table into our runtime services data section so that
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payloads may still access it after exit_boot_services. However, most fields
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in it are quite useless once we're in that state, so let's just patch them
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out.
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With this patch we don't get spurious warnings when running EFI binaries
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anymore.
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Signed-off-by: Alexander Graf <agraf@suse.de>
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---
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lib/efi_loader/efi_runtime.c | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
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index 3ee27ca..11d0126 100644
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--- a/lib/efi_loader/efi_runtime.c
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+++ b/lib/efi_loader/efi_runtime.c
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@@ -125,6 +125,22 @@ static const struct efi_runtime_detach_list_struct efi_runtime_detach_list[] = {
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/* RTC accessors are gone */
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.ptr = &efi_runtime_services.get_time,
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.patchto = &efi_device_error,
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+ }, {
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+ /* Clean up system table */
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+ .ptr = &systab.con_in,
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+ .patchto = NULL,
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+ }, {
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+ /* Clean up system table */
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+ .ptr = &systab.con_out,
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+ .patchto = NULL,
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+ }, {
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+ /* Clean up system table */
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+ .ptr = &systab.std_err,
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+ .patchto = NULL,
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+ }, {
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+ /* Clean up system table */
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+ .ptr = &systab.boottime,
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+ .patchto = NULL,
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},
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};
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