[RFC PATCH] cmd: fwu: Dump custom fields from mdata structure

[Michal Simek]

Hi Sughosh and Ilias,

On 6/5/24 16:55, Michal Simek wrote:
> The commit cb9ae40a16f0 ("tools: mkfwumdata: add logic to append vendor
> data to the FWU metadata") added support for adding vendor data to mdata
> structure but it is not visible anywhere that's why extend fwu command to
> dump it.
> 
> Signed-off-by: Michal Simek <michal.simek at amd.com>
> ---
> 
> I am using this for some time to check various configurations that's why it
> can be useful for others too.
> Sughosh: Maybe there is better way how to dump it.
> ---
>   cmd/fwu_mdata.c | 25 +++++++++++++++++++++++++
>   1 file changed, 25 insertions(+)
> 
> diff --git a/cmd/fwu_mdata.c b/cmd/fwu_mdata.c
> index 9c048d69a131..ff6435505167 100644
> --- a/cmd/fwu_mdata.c
> +++ b/cmd/fwu_mdata.c
> @@ -7,6 +7,7 @@
>   #include <dm.h>
>   #include <fwu.h>
>   #include <fwu_mdata.h>
> +#include <hexdump.h>
>   #include <log.h>
>   #include <stdio.h>
>   #include <stdlib.h>
> @@ -45,6 +46,30 @@ static void print_mdata(struct fwu_data *data)
>   			       img_info->accepted == 0x1 ? "yes" : "no");
>   		}
>   	}
> +
> +	if (data->version == 2) {
> +		struct fwu_mdata *mdata = data->fwu_mdata;
> +		struct fwu_fw_store_desc *desc;
> +		void *end;
> +		u32 diff;
> +
> +		/*
> +		 * fwu_mdata defines only header that's why taking it as array
> +		 * which exactly point to image description location
> +		 */
> +		desc = (struct fwu_fw_store_desc *)&mdata[1];
> +
> +		/* Number of entries is taken from for loop - variable i */
> +		end = &desc->img_entry[i];
> +		debug("mdata %p, desc %p, end %p\n", mdata, desc, end);
> +
> +		diff = data->metadata_size - ((void *)end - (void *)mdata);
> +		if (diff) {
> +			printf("Custom fields covered by CRC 0x%x\n", diff);
> +			print_hex_dump_bytes("CUSTOM ", DUMP_PREFIX_OFFSET,
> +					     end, diff);
> +		}
> +	}
>   }
>   
>   int do_fwu_mdata_read(struct cmd_tbl *cmdtp, int flag,

Can you please take a look at this patch?

Thanks,
Michal