Dear Fabio Giovagnini,
please read http://www.netmeister.org/news/learn2quote.html - don't top post / full quote, please.
In message 201002061654.11412.fabio.giovagnini@aurion-tech.com you wrote:
for sure my borad is not an rsk 7203, being my board designed by me; but I followed the rsk 7203 schematics to connect NOR Flash, SDRAM, ETH, and NAND Flash. As on my own board, as on rsk board NOR flash in on CS0. So I think I am miss understanding something.
- Does u-boot a sort of IPL so it is the program the microprocessor runs at
power on reset? If yes, at 0x00000000 or 0x20000000 (nt cached) should start the program? How it can run form 0x0C7C0000 if it is SDRAM address space?
I don't know your hardware, nor do I know the Renesas rsk7203 board. I have no idea how your board's reset sequence looks like, nor how the Renesas board loads and starts U-Boot.
U-Boot can be configured in a plethora of different ways to fit all sorts of hardware.
If your board differs from the Renesas board, you will have to port U-Boot to your hardware. As only you know the hardware, and as it is you who defines things like memory map etc., only you can decide how to do that. The Renesas board may, or may not, be a good starting point. I cannot comment on this.
Best regards,
Wolfgang Denk