Re: [PATCH] configs: am335x_evm: Enable DFU over TFTP support

On 26/02/20 11:13 PM, Sam Protsenko wrote:

DFU over TFTP flashing method might be helpful in order to speed-up the flashing process of big images (as DFU works over USB EP0, which is quite slow). Also, it's a good backup option in the case when USB got broken (either in software or hardware), to avoid resorting to SD card boot.

This config option was present in am335x_boneblack_defconfig, but we have to use generic am335x_evm_defconfig now, as BBB defconfig was removed in commit 8fa7f65dd02c ("configs: Remove am335x_boneblack_defconfig"). So this patch merely brings that option back.

Tested on BeagleBone Black:

=> setenv dfu_alt_info $dfu_alt_info_emmc
=> setenv ipaddr 192.168.0.100
=> setenv serverip 192.168.0.1
=> setenv updatefile update_uboot.itb
=> dfu tftp mmc 1

Where 'update_uboot.its' file looks like this:

/dts-v1/;

/ {
    description = "Automatic U-Boot update";
    #address-cells = <1>;

    images {
        u-boot.img.raw-1 {
            description = "U-Boot binary";
            data = /incbin/("u-boot.img");
            compression = "none";
            type = "firmware";
            load = <0x60000>;
            hash-1 {
                algo = "sha1";
            };
        };
    };
};

And 'update_uboot.itb' is generated as follows:

$ mkimage -f update_uboot.its update_uboot.itb

Newly flashed U-Boot works fine.

Fixes: 8fa7f65dd02c ("configs: Remove am335x_boneblack_defconfig") Signed-off-by: Sam Protsenko joe.skb7@gmail.com

Applied to u-boot-ti next.

Thanks and regards, Lokesh