sudo dd if=firefly-rk3288/u-boot-dtb.img of=/dev/sdc seek=16384
This puts the Rockchip header and SPL image first and then places the U-Boot
-image at block 16384 (i.e. 4MB from the start of the SD card). This
+image at block 16384 (i.e. 8MB from the start of the SD card). This
corresponds with this setting in U-Boot:
#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x4000
./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
+ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 seek=16384
Booting from an SD card on RK3188
=================================
The bootrom of rk3188 expects to find a small 1kb loader which returns
control to the bootrom, after which it will load the real loader, which
-can then be up to 29kb in size and does the regular ddr init.
+can then be up to 29kb in size and does the regular ddr init. This is
+handled by a single image (built as the SPL stage) that tests whether
+it is handled for the first or second time via code executed from the
+boot0-hook.
Additionally the rk3188 requires everything the bootrom loads to be
rc4-encrypted. Except for the very first stage the bootrom always reads
and decodes 2kb pages, so files should be sized accordingly.
# copy tpl, pad to 1020 bytes and append spl
-cat tpl/u-boot-tpl.bin > tplspl.bin
-truncate -s 1020 tplspl.bin
-cat spl/u-boot-spl.bin >> tplspl.bin
-tools/mkimage -n rk3188 -T rksd -d tplspl.bin out
+tools/mkimage -n rk3188 -T rksd -d spl/u-boot-spl.bin out
# truncate, encode and append u-boot.bin
truncate -s %2048 u-boot.bin