Building U-Boot for Compulab's imx8mm-cl-iot-gate board

[Fabio Estevam]

Hi Paul,

Thanks for your response.

On Thu, Jul 1, 2021 at 6:38 PM Paul Liu <paul.liu at linaro.org> wrote:
>
> Hi Fabio,
>
> We have dfu_alt_info set. So that we can capsule update from UEFI.
> First, "setenv -e -nv -bs -rt -v OsIndications =0x04"
> And then we can "efidebug capsule update -v ${loadaddr}".
>
> To make the capsule binary, we need to create a capsule1.itb with the following content:
> /dts-v1/;
>
> / {
>        description = "Automatic U-Boot environment update";
>        #address-cells = <2>;
>
>        images {
>                flash-bin {
>                        description = "U-Boot binary on SPI Flash";
>                        data = /incbin/("flash.bin");
>                        compression = "none";
>                        type = "firmware";
>                        arch = "arm64";
>                        load = <0>;
>                        hash-1 {
>                                algo = "sha1";
>                        };
>                };
>                u-boot-itb {
>                        description = "U-Boot binary";
>                        data = /incbin/("u-boot.itb");
>                        compression = "none";
>                        type = "firmware";
>                         arch = "arm64";
>                        load = <0>;
>                        hash-1 {
>                                algo = "sha1";
>                        };
>                };
>        };
> };
>
> And then "./tools/mkimage -f capsule1.its capsule1.itb"
> "./tools/mkeficapsule --fit capsule1.itb --index 1 capsule1.bin"
>
> And we can tftp the capsule1.bin to ${loadaddr} and then use the capsule update.

In my case, I have the original U-Boot 2020.04 version from Compulab
on the IoT Gateway board.

Would it be possible to run a patch like this
https://pastebin.com/raw/Rq1Yv6ka

And then just load flash.bin via TFTP and flash it to offset 33K of the eMMC?

Would that work?

Thanks,

Fabio Estevam