The efi_loader currently stops iterating over the available block devices stopping at the first device that fails. This may imply that no block device is found.
With the patch efi_loader only iterates over valid devices.
It is based on patch 06d592bf52f6 (dm: core: Add uclass_first/next_device_check()) which is currently in u-boot-dm.git.
For testing I used an odroid-c2 with a dts including &sd_emmc_a { status = "okay"; }; This device does not exist on the board and cannot be initialized.
Without the patch:
=> bootefi hello ## Starting EFI application at 01000000 ... WARNING: Invalid device tree, expect boot to fail mmc_init: -95, time 1806 Found 0 disks Hello, world! ## Application terminated, r = 0
With the patch:
=> bootefi hello ## Starting EFI application at 01000000 ... WARNING: Invalid device tree, expect boot to fail mmc_init: -95, time 1806 Scanning disk mmc@70000.blk... Scanning disk mmc@72000.blk... Card did not respond to voltage select! mmc_init: -95, time 9 Scanning disk mmc@74000.blk... Found 3 disks Hello, world! ## Application terminated, r = 0
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_disk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index 39e602a868..4e8e7d0ad6 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -289,9 +289,9 @@ int efi_disk_register(void) #ifdef CONFIG_BLK struct udevice *dev;
- for (uclass_first_device(UCLASS_BLK, &dev); + for (uclass_first_device_check(UCLASS_BLK, &dev); dev; - uclass_next_device(&dev)) { + uclass_next_device_check(&dev)) { struct blk_desc *desc = dev_get_uclass_platdata(dev); const char *if_typename = dev->driver->name;