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Fix booting from drives with 4k sectors on UEFI.

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This commit is contained in:
Peter Jones 2013-04-03 14:14:27 -04:00
parent 56aa737e59
commit 3ad78fdcc9
2 changed files with 46 additions and 1 deletions
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41
grub-2.00-handle-4k-sectors.patch Normal file
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@ -0,0 +1,41 @@
From f923381741b5a56115c5860a593e94539c5bbc8f Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Wed, 3 Apr 2013 11:41:52 -0400
Subject: [PATCH] Make grub_efidisk_get_device_name() work on 4K native disks.
When we have 4kB sectors instead of 512b sectors, hd.partition_start and
grub_partition_get_start() won't match - the latter assumes 512-byte
sectors, and the former gives us the correct number based on the
physical media's sector size. So when we have to compare them, we need
to compensate.
Signed-off-by: Peter Jones <grub2-owner@fedoraproject.org>
---
grub-core/disk/efi/efidisk.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/grub-core/disk/efi/efidisk.c b/grub-core/disk/efi/efidisk.c
index 77ab5b0..a905b52 100644
--- a/grub-core/disk/efi/efidisk.c
+++ b/grub-core/disk/efi/efidisk.c
@@ -791,11 +791,13 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle)
auto int find_partition (grub_disk_t disk, const grub_partition_t part);
/* Find the identical partition. */
- int find_partition (grub_disk_t disk __attribute__ ((unused)),
- const grub_partition_t part)
+ int find_partition (grub_disk_t disk, const grub_partition_t part)
{
- if (grub_partition_get_start (part) == hd.partition_start
- && grub_partition_get_len (part) == hd.partition_size)
+ struct grub_efidisk_data *d = disk->data;
+ grub_efi_block_io_media_t *m = d->block_io->media;
+
+ if (grub_partition_get_start (part) / (m->block_size / 512) == hd.partition_start
+ && grub_partition_get_len (part) / (m->block_size / 512) == hd.partition_size)
{
partition_name = grub_partition_get_name (part);
return 1;
--
1.8.1.4

6
grub2.spec
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@ -41,7 +41,7 @@
Name: grub2
Epoch: 1
Version: 2.00
Release: 16%{?dist}
Release: 17%{?dist}
Summary: Bootloader with support for Linux, Multiboot and more
Group: System Environment/Base
@ -80,6 +80,7 @@ Patch36: grub-2.00-search-for-specific-config-file-for-netboot.patch
Patch37: grub2-add-bootpath-device-to-the-list.patch
Patch38: grub-2.00-add-GRUB-DISABLE-SUBMENU-option.patch
Patch39: grub-2.00-support-bls-config.patch
Patch40: grub-2.00-handle-4k-sectors.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@ -433,6 +434,9 @@ fi
%doc grub-%{tarversion}/themes/starfield/COPYING.CC-BY-SA-3.0
%changelog
* Wed Apr 03 2013 Peter Jones <pjones@redhat.com> - 2.00-17
- Fix booting from drives with 4k sectors on UEFI.
* Thu Feb 14 2013 Peter Jones <pjones@redhat.com> - 2.00-16
- Allow the user to disable submenu generation
- (partially) support BLS-style configuration stanzas.