Soodeh Bakhshandeh wrote:
Dear sir I have a problem. I want to boot my pc with uboot. Which work I shold do?what is my roadmap? thanks
You need to get the data sheets of all the chips on your board, including any north bridges, south bridges, video chips (assuming you want to support video), memory (flash and SDRAM), and whatever other software programmable parts that are on your board. You need this information in order to properly initialize the hardware.
The traditional BIOS does this initialization. Since you desire to replace the BIOS with u-boot, you will have to do the initialization yourself.
The big problem is that full hardware documentation is hard to get. Depending on your board and the chips used on it, you might be able to get the documentation, but historically it is a show stopper problem. This may be changing with hardware becoming more open for linux drivers, or maybe you will get lucky...
Once you have the documentation, you will need to figure out exactly how your hardware needs to be initialized (registers, values, sequences).
Good luck, gvb