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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.rockchip | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/README.rockchip b/doc/README.rockchip index 12fec38139..4b7be0b715 100644 --- a/doc/README.rockchip +++ b/doc/README.rockchip @@ -150,6 +150,24 @@ Note: rk3036 SDMMC and debug uart use the same iomux, so if you boot from SD, th debug uart must be disabled +Booting from an SD card on RK3288 with TPL +========================================== + +Since the size of SPL can't be exceeded 0x8000 bytes in RK3288, it is not possible add +new SPL features like Falcon mode or etc. + +So introduce TPL so-that adding new features to SPL is possible because now TPL should +run minimal with code like DDR, clock etc and rest of new features in SPL. + +As of now TPL is added on Vyasa-RK3288 board. + +To write an image that boots from an SD card (assumed to be /dev/mmcblk0): + + ./tools/mkimage -n rk3288 -T rksd -d ./tpl/u-boot-tpl.bin out && + cat ./spl/u-boot-spl-dtb.bin >> out && + sudo dd if=out of=/dev/mmcblk0 seek=64 && + sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 seek=256 + Booting from an SD card on RK3188 ================================= |