On 12.04.2012 14:11, Stefano Babic wrote:
On 12/04/2012 11:33, Timo Ketola wrote:
+$(obj)u-boot-nand.imx: $(obj)u-boot.imx
+ dd if=$< of=$@ seek=2
+
I wonder why we need this in u-boot code and to set this rule in the
main Makefile. You can always do this after generating u-boot.
Older U-Boot (from FreeScale) made an .imx image with 1KB padding which I could
flash directly into the NAND at offset 0. Now I had to do manually that
dd-magic (before I put it in Makefile) because openocd doesn't allow to flash
at offset 0x400 (it demands write-page alignment).
The rules here are to generate the u-boot.imx. Then the same image can
be stored at different addresses. Depending on the i.MX SOC, ofssets can
be different (MX5 / MX6 have different offsets for NOR / NAND / oneNAND).
I prefer a build system which generates an image ready for flashing but perhaps
I have to do that outside of U-Boot, somehow.
--
Timo
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