On Mon, Mar 13, 2017 at 2:49 PM, Stephen Warren <swar...@wwwdotorg.org> wrote: > On 03/13/2017 03:34 PM, Tim Harvey wrote: >> >> Greetings, >> >> I'm working with some boards with eMMC FLASH and understand that I can >> set the fields of the PARTITION_CONFIG with the 'mmc partconf' command >> to specify what partition is used for boot. Once I do that to set the >> boot0 partition for example, how can I access that partition from >> within u-boot via mmc read/write? In Linux the kernel provides access >> to user/boot0/boot1/rpmb via different devices, but I don't see u-boot >> doing that. > > > The "mmc dev" command can be used to select which MMC device to operate on. > The "typical" command "mmc dev 0" selects the main partition on MMC device 0 > for later MMC-specific commands such as "mmc read". You can add an extra > parameter to that command to request a specific HW partition, e.g. "mmc dev > 0 1" selects boo0 of MMC device 0 and "mmc dev 0 2" selects boot1. > > A similar naming scheme exists for commands that take a complete device > specification each time. For example, "part list mmc 0" to list partitions > in the main partition on MMC device 0, or "part list mmc 0.1" to list > partitions on boot0 of MMC device 0.
Stephen, Thanks - I wasn't aware of this usage and this was exactly what I was looking for. Tim _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot