From 378fc83ebd542f1e06da624cd0822577e1ee4cf2 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt <xypron.glpk@gmx.de> Date: Sat, 23 May 2020 11:36:49 +0200 Subject: [PATCH] doc: dfu: describe eMMC partition number parameter In dfu_alt_info for eMMC the eMMC partition number can be specified. The separator in dfu_alt_info is a semicolon not a comma. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Lukasz Majewski <lukma@denx.de> --- doc/README.dfu | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/doc/README.dfu b/doc/README.dfu index caf1c9998c..29230ec654 100644 --- a/doc/README.dfu +++ b/doc/README.dfu @@ -49,7 +49,7 @@ Configuration Options: Environment variables: the dfu command use 3 environments variables: - "dfu_alt_info" : the DFU setting for the USB download gadget with a comma + "dfu_alt_info" : the DFU setting for the USB download gadget with a semicolon separated string of information on each alternate: dfu_alt_info="<alt1>;<alt2>;....;<altN>" @@ -87,12 +87,21 @@ Commands: "mmc" (for eMMC and SD card) cmd: dfu 0 mmc <dev> each element in "dfu_alt_info" = - <name> raw <offset> <size> raw access to mmc device - <name> part <dev> <part_id> raw acces to partition - <name> fat <dev> <part_id> file in FAT partition - <name> ext4 <dev> <part_id> file in EXT4 partition + <name> raw <offset> <size> [mmcpart <num>] raw access to mmc device + <name> part <dev> <part_id> [mmcpart <num>] raw access to partition + <name> fat <dev> <part_id> [mmcpart <num>] file in FAT partition + <name> ext4 <dev> <part_id> [mmcpart <num>] file in EXT4 partition + + with <partid> being the GPT or DOS partition index, + with <num> being the eMMC hardware partition number. + + A value of environment variable dfu_alt_info for eMMC could be: + + "u-boot raw 0x3e 0x800 mmcpart 1;bl2 raw 0x1e 0x1d mmcpart 1" + + A value of environment variable dfu_alt_info for SD card could be: - with <partid> is the GPT or DOS partition index + "u-boot raw 0x80 0x800;uImage ext4 0 2" "nand" (raw slc nand device) cmd: dfu 0 nand <dev> -- 2.39.5