[PATCH v3] Fix flashing of eMMC user area with Fastboot

[Sean Anderson <sean.anderson@seco.com>]

On 5/14/21 5:26 PM, Oleh Kravchenko wrote:
 > Hello guys,
 > Could you please review and merge this patch?
 >
 > PR successfully passed CI:
 > https://github.com/u-boot/u-boot/pull/75
 >
 > 15.05.21 00:15, Oleh Kravchenko ????:
 >> 'gpt' and 'mmc0' fastboot partitions have been treated as the same device,
 >> but it is wrong.
 >>
 >> Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
 >> Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
 >> Cc: Marek Vasut <marex@denx.de>
 >> ---
 >> Changes for v2:
 >>     - code cleanup;
 >> Changes for v3:
 >>     - QA passed at https://github.com/u-boot/u-boot/pull/75;
 >>
 >>   drivers/fastboot/fb_mmc.c | 25 ++++++++++++++++++++-----
 >>   1 file changed, 20 insertions(+), 5 deletions(-)
 >>
 >> diff --git a/drivers/fastboot/fb_mmc.c b/drivers/fastboot/fb_mmc.c
 >> index 2f3837e559..647d3f6c1b 100644
 >> --- a/drivers/fastboot/fb_mmc.c
 >> +++ b/drivers/fastboot/fb_mmc.c
 >> @@ -532,12 +532,7 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer,
 >>   #endif
 >>
 >>   #if CONFIG_IS_ENABLED(EFI_PARTITION)
 >> -#ifndef CONFIG_FASTBOOT_MMC_USER_SUPPORT
 >>   	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
 >> -#else
 >> -	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0 ||
 >> -	    strcmp(cmd, CONFIG_FASTBOOT_MMC_USER_NAME) == 0) {
 >> -#endif
 >>   		dev_desc = fastboot_mmc_get_dev(response);
 >>   		if (!dev_desc)
 >>   			return;
 >> @@ -599,9 +594,29 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer,
 >>   	}
 >>   #endif
 >>
 >> +#if CONFIG_IS_ENABLED(FASTBOOT_MMC_USER_SUPPORT)
 >> +	if (strcmp(cmd, CONFIG_FASTBOOT_MMC_USER_NAME) == 0) {
 >> +		dev_desc = fastboot_mmc_get_dev(response);
 >> +		if (!dev_desc)
 >> +			return;
 >> +
 >> +		memset(&info, 0, sizeof(info));
 >> +		info.start	= 0;
 >> +		info.size	= dev_desc->lba;
 >> +		info.blksz	= dev_desc->blksz;
 >> +		strlcpy((char *)&info.name, cmd, sizeof(info.name));
 >> +
 >> +		goto write_image;
 >> +	}
 >> +#endif
 >> +
 >>   	if (fastboot_mmc_get_part_info(cmd, &dev_desc, &info, response) < 0)
 >>   		return;
 >>
 >> +#if CONFIG_IS_ENABLED(FASTBOOT_MMC_USER_SUPPORT)
 >> +write_image:
 >> +#endif
 >> +

This is still ugly; perhaps we can combine this with the above if statement. E.g.

	if (!info.size
  	    && fastboot_mmc_get_part_info(cmd, &dev_desc, &info, response) < 0)
  		return;

--Sean

 >>   	if (is_sparse_image(download_buffer)) {
 >>   		struct fb_mmc_sparse sparse_priv;
 >>   		struct sparse_storage sparse;
 >>
 >