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A set of EFI fixes to support arm64 QCom UEFI firmwares

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Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
This commit is contained in:
Javier Martinez Canillas 2019-03-26 17:15:15 +01:00
parent c1ccaf8a0e
commit 88459565ec
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5 changed files with 168 additions and 1 deletions
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35
0289-mkimage-Use-EFI32_HEADER_SIZE-define-in-arm-efi-case.patch Normal file
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@ -0,0 +1,35 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 28 Jan 2019 14:35:27 +0100
Subject: [PATCH] mkimage: Use EFI32_HEADER_SIZE define in arm-efi case
The efi-arm case was defining its own header size calculation, even though it's
100% identical to the common EFI32_HEADER_SIZE definition.
So let's clean it up to use the common define.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Julien ROBIN <julien.robin28@free.fr>
---
util/mkimage.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/util/mkimage.c b/util/mkimage.c
index e22d82afa61..d18ce87a55d 100644
--- a/util/mkimage.c
+++ b/util/mkimage.c
@@ -584,12 +584,7 @@ static const struct grub_install_image_target_desc image_targets[] =
.decompressor_uncompressed_size = TARGET_NO_FIELD,
.decompressor_uncompressed_addr = TARGET_NO_FIELD,
.section_align = GRUB_PE32_SECTION_ALIGNMENT,
- .vaddr_offset = ALIGN_UP (GRUB_PE32_MSDOS_STUB_SIZE
- + GRUB_PE32_SIGNATURE_SIZE
- + sizeof (struct grub_pe32_coff_header)
- + sizeof (struct grub_pe32_optional_header)
- + 4 * sizeof (struct grub_pe32_section_table),
- GRUB_PE32_SECTION_ALIGNMENT),
+ .vaddr_offset = EFI32_HEADER_SIZE,
.pe_target = GRUB_PE32_MACHINE_ARMTHUMB_MIXED,
.elf_target = EM_ARM,
},

55
0290-mkimage-Align-efi-sections-on-4k-boundary.patch Normal file
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@ -0,0 +1,55 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 28 Jan 2019 14:35:28 +0100
Subject: [PATCH] mkimage: Align efi sections on 4k boundary
There is UEFI firmware popping up in the wild now that implements stricter
permission checks using NX and write protect page table entry bits.
This means that firmware now may fail to load binaries if its individual
sections are not page aligned, as otherwise it can not ensure permission
boundaries.
So let's bump all efi section alignments up to 4k (EFI page size). That way
we will stay compatible going forward.
Unfortunately our internals can't deal very well with a mismatch of alignment
between the virtual and file offsets, so we have to also pad our target
binary a bit.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Julien ROBIN <julien.robin28@free.fr>
---
include/grub/efi/pe32.h | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/include/grub/efi/pe32.h b/include/grub/efi/pe32.h
index c03cc599f63..f71da19f2f5 100644
--- a/include/grub/efi/pe32.h
+++ b/include/grub/efi/pe32.h
@@ -20,6 +20,7 @@
#define GRUB_EFI_PE32_HEADER 1
#include <grub/types.h>
+#include <grub/efi/memory.h>
/* The MSDOS compatibility stub. This was copied from the output of
objcopy, and it is not necessary to care about what this means. */
@@ -50,8 +51,14 @@
/* According to the spec, the minimal alignment is 512 bytes...
But some examples (such as EFI drivers in the Intel
Sample Implementation) use 32 bytes (0x20) instead, and it seems
- to be working. For now, GRUB uses 512 bytes for safety. */
-#define GRUB_PE32_SECTION_ALIGNMENT 0x200
+ to be working.
+
+ However, there is firmware showing up in the field now with
+ page alignment constraints to guarantee that page protection
+ bits take effect. Because currently existing GRUB code can not
+ properly distinguish between in-memory and in-file layout, let's
+ bump all alignment to GRUB_EFI_PAGE_SIZE. */
+#define GRUB_PE32_SECTION_ALIGNMENT GRUB_EFI_PAGE_SIZE
#define GRUB_PE32_FILE_ALIGNMENT GRUB_PE32_SECTION_ALIGNMENT
struct grub_pe32_coff_header

71
0291-mkimage-Clarify-file-alignment-in-efi-case.patch Normal file
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@ -0,0 +1,71 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 28 Jan 2019 14:35:29 +0100
Subject: [PATCH] mkimage: Clarify file alignment in efi case
There are a few spots in the PE generation code for EFI binaries that uses
the section alignment rather than file alignment, even though the alignment
is really only file bound.
Replace those cases with the file alignment constant instead.
Reported-by: Daniel Kiper <dkiper@net-space.pl>
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tested-by: Julien ROBIN <julien.robin28@free.fr>
---
util/mkimage.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/util/mkimage.c b/util/mkimage.c
index d18ce87a55d..b5272bc1b01 100644
--- a/util/mkimage.c
+++ b/util/mkimage.c
@@ -66,14 +66,14 @@
+ sizeof (struct grub_pe32_coff_header) \
+ sizeof (struct grub_pe32_optional_header) \
+ 4 * sizeof (struct grub_pe32_section_table), \
- GRUB_PE32_SECTION_ALIGNMENT)
+ GRUB_PE32_FILE_ALIGNMENT)
#define EFI64_HEADER_SIZE ALIGN_UP (GRUB_PE32_MSDOS_STUB_SIZE \
+ GRUB_PE32_SIGNATURE_SIZE \
+ sizeof (struct grub_pe32_coff_header) \
+ sizeof (struct grub_pe64_optional_header) \
+ 4 * sizeof (struct grub_pe32_section_table), \
- GRUB_PE32_SECTION_ALIGNMENT)
+ GRUB_PE32_FILE_ALIGNMENT)
static const struct grub_install_image_target_desc image_targets[] =
{
@@ -1207,10 +1207,10 @@ grub_install_generate_image (const char *dir, const char *prefix,
header_size = EFI64_HEADER_SIZE;
reloc_addr = ALIGN_UP (header_size + core_size,
- image_target->section_align);
+ GRUB_PE32_FILE_ALIGNMENT);
pe_size = ALIGN_UP (reloc_addr + layout.reloc_size,
- image_target->section_align);
+ GRUB_PE32_FILE_ALIGNMENT);
pe_img = xmalloc (reloc_addr + layout.reloc_size);
memset (pe_img, 0, header_size);
memcpy ((char *) pe_img + header_size, core_img, core_size);
@@ -1260,7 +1260,7 @@ grub_install_generate_image (const char *dir, const char *prefix,
o->image_base = 0;
o->section_alignment = grub_host_to_target32 (image_target->section_align);
- o->file_alignment = grub_host_to_target32 (image_target->section_align);
+ o->file_alignment = grub_host_to_target32 (GRUB_PE32_FILE_ALIGNMENT);
o->image_size = grub_host_to_target32 (pe_size);
o->header_size = grub_host_to_target32 (header_size);
o->subsystem = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION);
@@ -1295,7 +1295,7 @@ grub_install_generate_image (const char *dir, const char *prefix,
o->code_base = grub_cpu_to_le32 (header_size);
o->image_base = 0;
o->section_alignment = grub_host_to_target32 (image_target->section_align);
- o->file_alignment = grub_host_to_target32 (image_target->section_align);
+ o->file_alignment = grub_host_to_target32 (GRUB_PE32_FILE_ALIGNMENT);
o->image_size = grub_host_to_target32 (pe_size);
o->header_size = grub_host_to_target32 (header_size);
o->subsystem = grub_host_to_target16 (GRUB_PE32_SUBSYSTEM_EFI_APPLICATION);

3
grub.patches
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@ -286,3 +286,6 @@ Patch0285: 0285-grub-switch-to-blscfg-copy-increment.mod-for-legacy-.patch
Patch0286: 0286-Only-set-blsdir-if-boot-loader-entries-is-in-a-btrfs.patch
Patch0287: 0287-Fix-the-type-of-grub_efi_status_t.patch
Patch0288: 0288-blscfg-don-t-use-grub_list_t-and-the-GRUB_AS_LIST-ma.patch
Patch0289: 0289-mkimage-Use-EFI32_HEADER_SIZE-define-in-arm-efi-case.patch
Patch0290: 0290-mkimage-Align-efi-sections-on-4k-boundary.patch
Patch0291: 0291-mkimage-Clarify-file-alignment-in-efi-case.patch

5
grub2.spec
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@ -7,7 +7,7 @@
Name: grub2
Epoch: 1
Version: 2.02
Release: 74%{?dist}
Release: 75%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
License: GPLv3+
URL: http://www.gnu.org/software/grub/
@ -480,6 +480,9 @@ rm -r /boot/grub2.tmp/ || :
%endif
%changelog
* Tue Mar 26 2019 Javier Martinez Canillas <javierm@redhat.com> - 1:2.02-75
- A set of EFI fixes to support arm64 QCom UEFI firmwares (pbrobinson)
* Fri Mar 22 2019 Javier Martinez Canillas <javierm@redhat.com> - 2.02-74
- Fix some BLS snippets not being displayed in the GRUB menu
Resolves: rhbz#1691232