[U-Boot] [PATCH 1/3] efi_loader: support USB boot in distro boot script

[Tuomas Tynkkynen]

Hi Takahiro,

On Fri, 12 Oct 2018 14:09:07 +0900
AKASHI Takahiro <takahiro.akashi at linaro.org> wrote:

> With this patch, a removable USB mass storage device attached to the
> system will also be scanned to find and boot an EFI binary (that is
> BOOTEFI_NAME, see config_distro_bootcmd.h).
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> ---
>  include/config_distro_bootcmd.h | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/include/config_distro_bootcmd.h
> b/include/config_distro_bootcmd.h index 76e12b7bf4ee..dd47e27d6835
> 100644 --- a/include/config_distro_bootcmd.h
> +++ b/include/config_distro_bootcmd.h
> @@ -26,7 +26,12 @@
>   */
>  
>  #define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \
> -		"if " #devtypel " dev ${devnum}; then " \
> +		"if test " #devtypel " = usb ; then " \
> +			"if " #devtypel " info ${devnum}; then " \
> +				"setenv devtype " #devtypel "; " \
> +				"run scan_dev_for_boot_part; " \
> +			"fi;" \
> +		"elif " #devtypel " dev ${devnum}; then " \
>  			"setenv devtype " #devtypel "; " \
>  			"run scan_dev_for_boot_part; " \
>  		"fi\0"

I can't see how this patch is needed - "usb dev" is a valid command
(via do_usb() -> blk_common_cmd()) as long as CONFIG_USB_STORAGE is set.