On Sun, 29 Oct 2023 23:37:22 +0100 Marek Vasut marex@denx.de wrote:

Add support for exposing the whole mmc device by setting the 'size' parameter to 0. This can be useful in case it is not clear what the total device size is up front. Update the documentation accordingly.

Signed-off-by: Marek Vasut marex@denx.de

Cc: Lukasz Majewski lukma@denx.de Cc: Mattijs Korpershoek mkorpershoek@baylibre.com Cc: Tom Rini trini@konsulko.com

---

doc/usage/dfu.rst | 5 +++++ drivers/dfu/dfu_mmc.c | 10 ++++++++++ 2 files changed, 15 insertions(+)

diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst index 68cacbbef66..8845a71df36 100644 --- a/doc/usage/dfu.rst +++ b/doc/usage/dfu.rst @@ -121,6 +121,11 @@ mmc

 with

• offset

•    is the offset in the device (hexadecimal without "0x")
  

• size

•    is the size of the access area (hexadecimal without "0x")
  

•    or 0 which means whole device
  

  partid being the GPT or DOS partition index, num

diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index cdb3c18b01d..12c54e90ef7 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -386,6 +386,16 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char **argv, int a dfu->data.mmc.lba_size = third_arg; dfu->data.mmc.lba_blk_size = mmc->read_bl_len;

• /*
  

•  * In case the size is zero (i.e. mmc raw 0x10 0),
  

•  * assume the user intends to use whole device.
  

•  */
  

• if (third_arg == 0) {
  

• 	struct blk_desc *blk_dev =
  

mmc_get_blk_desc(mmc); +

• 	dfu->data.mmc.lba_size = blk_dev->lba;
  

• }
  

• /*
  • Check for an extra entry at dfu_alt_info env

variable * specifying the mmc HW defined partition number

Reviewed-by: Lukasz Majewski lukma@denx.de

Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH, Managing Director: Erika Unter HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@denx.de