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efi_loader: disk: allow blk devices even without UCLASS_PARTITION

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While GPT partition is mandated in UEFI specification, CONFIG_PARTITION is
seen optional under the current implementation.
So modify efi_disk_rw_blocks() to allow accepting UCLASS_BLK devices.

Fixes: commit d97e98c887 ("efi_loader: disk: use udevice instead of blk_desc")
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Mark Kettenis <kettenis@openbsd.org>
This commit is contained in:
AKASHI Takahiro 2022-04-28 13:49:16 +09:00 • committed by Heinrich Schuchardt
parent 8da26f5156
commit 6c640422ba
1 changed files with 15 additions and 14 deletions
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29
lib/efi_loader/efi_disk.c
View file

@ -99,21 +99,22 @@ static efi_status_t efi_disk_rw_blocks(struct efi_block_io *this,
if (buffer_size & (blksz - 1))
return EFI_BAD_BUFFER_SIZE;
#if CONFIG_IS_ENABLED(PARTITIONS)
if (direction == EFI_DISK_READ)
n = dev_read(diskobj->dev, lba, blocks, buffer);
else
n = dev_write(diskobj->dev, lba, blocks, buffer);
#else
/* dev is always a block device (UCLASS_BLK) */
struct blk_desc *desc;
if (CONFIG_IS_ENABLED(PARTITIONS) &&
device_get_uclass_id(diskobj->dev) == UCLASS_PARTITION) {
if (direction == EFI_DISK_READ)
n = dev_read(diskobj->dev, lba, blocks, buffer);
else
n = dev_write(diskobj->dev, lba, blocks, buffer);
} else {
/* dev is a block device (UCLASS_BLK) */
struct blk_desc *desc;
desc = dev_get_uclass_plat(diskobj->dev);
if (direction == EFI_DISK_READ)
n = blk_dread(desc, lba, blocks, buffer);
else
n = blk_dwrite(desc, lba, blocks, buffer);
#endif
desc = dev_get_uclass_plat(diskobj->dev);
if (direction == EFI_DISK_READ)
n = blk_dread(desc, lba, blocks, buffer);
else
n = blk_dwrite(desc, lba, blocks, buffer);
}
/* We don't do interrupts, so check for timers cooperatively */
efi_timer_check();