U-Boot can be booted from NAND without SPL by prepending the DCD header to
the actual U-Boot binary. However this requires prepending 1024 bytes to
u-boot.imx (DCD + u-boot.bin).
There is already a similar target to build spl/u-boot-nand-spl.imx, add the
same option for no-SPL boot.
Tested on i.MX6ULL.
The resulting layout of u-boot-nand.imx is:
- Offset 0x0000 (0 KiB): padding
- Offset 0x0400 (1 KiB): DCD header
- Offset 0x1000 (4 KiB): u-boot.bin
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
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