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

Hi Paul,

Thanks for your response.

On Thu, Jul 1, 2021 at 6:38 PM Paul Liu paul.liu@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