On Wed, 07 Nov 2018 16:01:00 +0100 Marek Szyprowski <m.szyprow...@samsung.com> wrote:
> Add possibility to define a part of partition as a separate DFU
> entity. This allows to have more than one items on the given partiton.
>
> The real use case for this option is TM2 board. It can use u-boot
> stored as Linux kernel on the defined partiton (as RAW data) and load
> the real kernel from the same partition, but stored under the certain
> offset.
>
> Signed-off-by: Marek Szyprowski <m.szyprow...@samsung.com>
> ---
> drivers/dfu/dfu_mmc.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
> index b45e6dc54c..826e70ffec 100644
> --- a/drivers/dfu/dfu_mmc.c
> +++ b/drivers/dfu/dfu_mmc.c
> @@ -357,6 +357,7 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu,
> char *devstr, char *s) struct blk_desc *blk_dev =
> mmc_get_blk_desc(mmc); int mmcdev = second_arg;
> int mmcpart = third_arg;
> + int offset = 0;
>
> if (part_get_info(blk_dev, mmcpart, &partinfo) != 0)
> { pr_err("Couldn't find part #%d on mmc device #%d\n",
> @@ -364,9 +365,17 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu,
> char *devstr, char *s) return -ENODEV;
> }
>
> + /*
> + * Check for an extra entry at dfu_alt_info env
> variable
> + * specifying the mmc HW defined partition number
> + */
> + if (s)
> + if (!strcmp(strsep(&s, " "), "offset"))
> + offset = simple_strtoul(s, NULL, 0);
> +
> dfu->layout = DFU_RAW_ADDR;
> - dfu->data.mmc.lba_start =
> partinfo.start;
> - dfu->data.mmc.lba_size =
> partinfo.size;
> + dfu->data.mmc.lba_start =
> partinfo.start+offset;
> + dfu->data.mmc.lba_size =
> partinfo.size-offset; dfu->data.mmc.lba_blk_size =
> partinfo.blksz; } else if (!strcmp(entity_type, "fat")) {
> dfu->layout = DFU_FS_FAT;
Acked-by: Lukasz Majewski <lu...@denx.de>
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
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Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lu...@denx.de
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