On Wed, Feb 07, 2018 at 08:41:32PM +0200, Sam Protsenko wrote: > >From DFU_ALT_INFO_EMMC (include/environment/ti/dfu.h) we can see that > rootfs will be flashed to second partition on eMMC. But at the moment we > have only one partition in $partitions environment variable. Let's add > "bootloader" partition prior to "rootfs", so that DFU works correctly. > This also fixes eMMC boot, which looks for rootfs on second partition. > > "bootloader" partition start corresponds to "u-boot.img.raw" in DFU > eMMC info, which is 0x300 sector (384 KiB offset from eMMC start). > > rootfs start address can be also found from DFU eMMC info. > bootloader-related area is finished at 0x1500 sector (2688 KiB offset > from eMMC start). This should be the start address for rootfs in > $partitions environment variable. > > While at it, fix U-Boot environment address to be the same as for > AM57x EVM, so that it doesn't clash with other partitions. > > So now eMMC layout looks like this: > > =============================================================== > > 0 +------------------------+ > | MBR/GPT header | 128 - > 128 +------------------------+ > | MLO | 256 - > 384 +------------------------+ > | u-boot.img | 1792 bootloader > 2176 +------------------------+ > | //////// hole //////// | 256 - > 2432 +------------------------+ > | U-Boot environment | 128 - > 2560 +------------------------+ > | U-Boot environment | 128 - > | (redundant) | > 2688 +------------------------+ > | rootfs | remaining rootfs > end +------------------------+ > > =============================================================== > > "hole" area can be used further for storing U-Boot environment (like > it's done in AM57x EVM config file) or for increasing u-boot.img area > (in case u-boot.img size increased, e.g. if new dtbs were added). > > This commit conforms with Linux partition table from f6d245b8c56c > ("arm: am57xx: Fix Linux boot from eMMC") commit, making things in > uniform way. > > Signed-off-by: Sam Protsenko <semen.protse...@linaro.org> > Reviewed-by: Lokesh Vutla <lokeshvu...@ti.com> > Reviewed-by: Tom Rini <tr...@konsulko.com>
Applied to u-boot/master, thanks! -- Tom
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