[U-Boot] Problem to link u-boot for sh2a 7203

[Fabio Giovagnini]

Dear Wolfgang,
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.
1) 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?

Thanks a lot and many regards



Alle 15:22, sabato 6 febbraio 2010, Wolfgang Denk ha scritto:
> Dear Fabio Giovagnini,
>
> In message <201002061124.41572.fabio.giovagnini at aurion-tech.com> you wrote:
> > I can compile u-boot for rsk7203_config.
> > But into the file board/renesas/rsk7203/config.mk
> >
> > TEXT_BASE = 0x0C7C0000
> >
> > and if I read u-boot.srec that is the result of building process I see
> > that the address spce of the code is starting from 0x0C7C0000
> >
> > On my board I have 32 bit SDRAM at such an address, and even if I could
>
> In this case your board is obviously not a Renesas rsk7203 board,
> which means you cannot use this configuration foir your hardware.
>
> > uxecute the program using an emulator initializing in place of me the
> > BSC, how can I flash at 0x00000000 (start address of NOR flash) my
> > bootloader? How can I link the loader so that I can flash the code into
> > my NOR flash and using a part of SDRAM I have to run the bootloader?
>
> You will have to port U-Boot to your hardware.
>
> Best regards,
>
> Wolfgang Denk

-- 
Fabio Giovagnini

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