Thanks Meter 0
Join Date: Mar 2012
I'm looking for any information about the iROM bootloader of s5pv210 (similar to s5pc110). Currently I have a a PDA based on s5pv210. Initially, it started from built-in NAND memory (with old u-boot on it). However, I found all six OM signals and now I can switch the boot mode. My first task - to make the processor start from SD-card. However, I have not yet succeeded in doing so. I figured out the format of card and where should BL1 lie. Now I have two questions:
1) how to determine whether the secure boot mode used and whether or not my binary to be signed? As i understand, some CPU have zeroed eFUSE, so it can run unsigned binary. I have some signed binaries (from similar devices and demo-boards) that should only start unsigned binary. But i have no success with them.
2) What is the format of 16-byte header. As long as I understood the first 4 bytes is the size of the image, then 4 bytes of unknown purpose, then the 4-byte checksum (the byte sum of all binary), then another 4 bytes of unknown function. Maybe someone has more information?
Thank you and apologize for my english.
P.S. may be someone have tried to disassemble iROM binary to determine its logic?