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Old 10-19-2012, 03:59 PM   #723
eureka
but forgot what it's like
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Quote:
Originally Posted by adi23 View Post
Also, i could modify the custom u-boot again in order to load some data in memory, but i don't know exactly how should i do this, or what data should i load.
As you can access U-Boot through serial, you can try loadb command:
  • build bist U-boot (i.e. without TYPE=prod), but I think you should make clean beforehand if you've built ordinary U-Boot in the same directory previously
  • comment all mmc-related calls in function do_bist at file common/cmd_boot.c
  • add #define CONFIG_CMD_LOADB to include/configs/imx50_yoshi.h
  • build ordinary U-Boot (i.e. with TYPE=prod), but again don't forget make clean beforehand
  • load ordinary U-Boot and in serial console load bist U-Boot into memory with command loadb 0x79800000 (0x79800000 is the value of CONFIG_BISTADDR define)
  • issue command bist to run bist U-Boot loaded into memory (or bist fastboot to load straight into fastboot mode)
Again, I didn't try it, I've just read sources and googled a bit.

Last edited by eureka; 10-19-2012 at 05:09 PM. Reason: add link to howto about loadb command
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