U-Boot 2023.10 does not boot from uSD on RPi4

[Peter Robinson]

On Tue, Oct 10, 2023 at 10:26 AM Guillaume Gardet
<Guillaume.Gardet at arm.com> wrote:
>
> Hi,
>
> U-Boot 2023.10 does not boot from uSD on RPi4.
> This has been found on openSUSE Tumbleweed. The only diff we need is:
>   -CONFIG_OF_EMBED=y
>   +CONFIG_OF_BOARD=y
> To use firmware provided Device Tree. But that should not affect the mmc behavior too much, I think.

I've been booting Fedora fine on a RPi4 BUT there's issues with the
display turning off [1] when the accelerated display modules load
(vc4) as a result of this patch set. Can you confirm if that's the
same problem you're seeing?

[1] https://lists.denx.de/pipermail/u-boot/2023-October/533158.html

> 'git bisect' points to:
> **********
> commit c771e5b8c2a186fb072b6c6f571d4a3cc86efba9
> Author: Simon Glass <sjg at chromium.org>
> Date:   Thu Jul 27 15:54:28 2023 -0600
>
>     arm: rpi: Switch to standard boot
>
>     Drop use of the distro scripts and use standard boot instead.
>
>     We don't need to specify the mmc devices individually, since they are
>     used in order from 0 to 2, and standard boot uses that order anyway.
>
>     Signed-off-by: Simon Glass <sjg at chromium.org>
> **********
>
> The following patch fixes the boot from uSD on RPi4 (not tested on RPi3 nor RPi Zero 2 W):
> **********
> diff --git a/board/raspberrypi/rpi/rpi.env b/board/raspberrypi/rpi/rpi.env
> index 30228285ed..02210b97b5 100644
> --- a/board/raspberrypi/rpi/rpi.env
> +++ b/board/raspberrypi/rpi/rpi.env
> @@ -74,4 +74,4 @@ pxefile_addr_r=0x02500000
>  fdt_addr_r=0x02600000
>  ramdisk_addr_r=0x02700000
>
> -boot_targets=mmc usb pxe dhcp
> +boot_targets=mmc0 mmc1 mmc2 usb pxe dhcp
> **********
>
> So, the comment from Simon " We don't need to specify the mmc devices individually, since they are used in order from 0 to 2, and standard boot uses that order anyway" seems wrong for the RPi4 case.
>
> Cheers,
> Guillaume
>
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