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x86: generate EFI platform bootable images

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Add EFI platform bootable images for x86 platforms. These images can
also boot from legacy BIOS platform.

EFI System Partition need to be fat12/fat16/fat32 (not need to load
filesystem drivers), so the first partition of EFI images are not ext4
filesystem any more.

GPT partition table has an alternate partition table, we did not
generate it. This may cause problems when use these images as qemu disk
(kernel can not find rootfs), we pad enough sectors will be ok.

Signed-off-by: 李国 <uxgood.org@gmail.com>
[part_magic_* refactoring, removed genisoimage checks]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
This commit is contained in:
李国
2020-03-26 14:05:33 +08:00
committed by Petr Štetiar
parent d9228514cc
commit a6b7c3e672
12 changed files with 165 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
target/linux/x86/base-files/lib/upgrade/platform.sh
View File

@@ -20,7 +20,7 @@ platform_check_image() {
get_partitions "/dev/$diskdev" bootdisk
#extract the boot sector from the image
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
get_image "$@" | dd of=/tmp/image.bs count=63 bs=512b 2>/dev/null
get_partitions /tmp/image.bs image
@@ -37,29 +37,31 @@ platform_check_image() {
}
platform_copy_config() {
local partdev
local partdev parttype=ext4
if export_partdevice partdev 1; then
mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt
part_magic_fat "/dev/$partdev" && parttype=vfat
mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
cp -af "$UPGRADE_BACKUP" "/mnt/$BACKUP_FILE"
umount /mnt
fi
}
platform_do_bootloader_upgrade() {
local bootpart
local bootpart parttable=msdos
local diskdev="$1"
if export_partdevice bootpart 1; then
mkdir -p /tmp/boot
mount -o rw,noatime "/dev/$bootpart" /tmp/boot
echo "(hd0) /dev/$diskdev" > /tmp/device.map
part_magic_efi "/dev/$diskdev" && parttable=gpt
echo "Upgrading bootloader on /dev/$diskdev..."
grub-bios-setup \
-m "/tmp/device.map" \
-d "/tmp/boot/boot/grub" \
-r "hd0,msdos1" \
-r "hd0,${parttable}1" \
"/dev/$diskdev" \
&& touch /boot/grub/upgraded
@@ -81,7 +83,7 @@ platform_do_upgrade() {
get_partitions "/dev/$diskdev" bootdisk
#extract the boot sector from the image
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
get_image "$@" | dd of=/tmp/image.bs count=63 bs=512b >/dev/null
get_partitions /tmp/image.bs image
@@ -106,7 +108,7 @@ platform_do_upgrade() {
while read part start size; do
if export_partdevice partdev $part; then
echo "Writing image to /dev/$partdev..."
get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
get_image "$@" | dd of="/dev/$partdev" ibs=512 obs=1M skip="$start" count="$size" conv=fsync
else
echo "Unable to find partition $part device, skipped."
fi
@@ -117,4 +119,15 @@ platform_do_upgrade() {
get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
platform_do_bootloader_upgrade "$diskdev"
local parttype=ext4
part_magic_efi "/dev/$diskdev" || return 0
if export_partdevice partdev 1; then
part_magic_fat "/dev/$partdev" && parttype=vfat
mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
set -- $(dd if="/dev/$diskdev" bs=1 skip=1168 count=16 2>/dev/null | hexdump -v -e '8/1 "%02x "" "2/1 "%02x""-"6/1 "%02x"')
sed -i "s/\(PARTUUID=\)[a-f0-9-]\+/\1$4$3$2$1-$6$5-$8$7-$9/ig" /mnt/boot/grub/grub.cfg
umount /mnt
fi
}