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| author | Hongxu Jia <hongxu.jia@windriver.com> | 2025-04-26 16:03:52 +0800 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2025-04-29 09:59:01 +0100 |
| commit | 161ff4d39d13435f8c68d48b8b0800dc2faa8609 (patch) | |
| tree | a483a1ed2d15a6fdbe6d7991258a5c415039dcc7 /meta/lib/oeqa/selftest | |
| parent | 7ff5ecce289eb4d634600b53e3ae9874234fe8e6 (diff) | |
| download | poky-161ff4d39d13435f8c68d48b8b0800dc2faa8609.tar.gz | |
syslinux: improve isohybrid to process extra sector count for ISO 9660 image
Due to commit [cdrtools-native: fix booting EFI ISO live failed]
applied to improve mkisofs to fix nsectors exceeds 0xffff situation
which set selection criteria type = 2 and save extra nsectors to
vendor unique selection criteria
In following case, add 64MB extra space to bootable image efi.img,
and the partition table of EFI is truncated to 32M
$ echo 'IMAGE_FSTYPES:pn-core-image-minimal = " live"' >> conf/local.conf
$ echo 'MACHINE_FEATURES:append = " efi pcbios"' >> conf/local.conf
$ echo '# 64MB extra space to bootable image efi.img' >> conf/local.conf
$ echo 'BOOTIMG_EXTRA_SPACE = "65535"' >> conf/local.conf
$ bitbake core-image-minimal
$ fdisk -l tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso
...
Device Boot Start End Sectors Size Id Type
tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso1 * 0 376831 376832 184M 0 Empty
tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso2 120 65654 65535 32M ef EFI (FAT-12/16/32)
After applying this patch to process extra sector count, the partition
table of EFI is 90.3M
$ fdisk -l tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso
...
Device Boot Start End Sectors Size Id Type
tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso1 * 0 376831 376832 184M 0 Empty
tmp/deploy/images/qemux86-64/core-image-minimal-qemux86-64.rootfs.iso2 120 185151 185032 90.3M ef EFI (FAT-12/16/32)
[1]https://pdos.csail.mit.edu/6.828/2017/readings/boot-cdrom.pdf
(From OE-Core rev: b4e112ed7e6ba5a6c6df530d696485a588831851)
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/lib/oeqa/selftest')
0 files changed, 0 insertions, 0 deletions