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boot: Consider non-bootable partitions

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Any 'bootable' flag in a DOS partition causes boostd to only scan
bootable partitions for that media. This can mean that extlinux.conf
files on the root disk are missed.

Put this logic behind a flag and update the documentation.

For now, the flag is enabled, to preserve the existing behaviour of
bootstd which is to ignore non-bootable partitions so long as there is
at least one bootable partition on the disk.  Future work may provide a
command (or some other mechanism) to control this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-03-15 14:25:58 +00:00
committed by Tom Rini
parent 8d6097d300
commit 6acb0d28b0
6 changed files with 13 additions and 6 deletions
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4
boot/bootdev-uclass.c
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@@ -168,8 +168,10 @@ int bootdev_find_in_blk(struct udevice *dev, struct udevice *blk,
*/
/* if there are bootable partitions, scan only those */
} else if (iter->first_bootable >= 0 &&
} else if ((iter->flags & BOOTFLOWIF_ONLY_BOOTABLE) &&
iter->first_bootable >= 0 &&
(iter->first_bootable ? !info.bootable : iter->part != 1)) {
log_debug("Skipping non-bootable partition %d\n", iter->part);
return log_msg_ret("boot", -EINVAL);
} else {
ret = fs_set_blk_dev_with_part(desc, bflow->part);