u-boot for EP2C35 running MMU cpu

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u-boot for EP2C35 running MMU cpu

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I want to make u-boot running on my evaluation board 2C35, where I have instantiated a cpu with a MMU.

I succeeded to compile it with console output on serial UART and network (91C111) support, but I am unable to write or erase the CFI flash.

It is a S29GL128 chip with byte access, and I thought it was supported in the nios2 u-boot distri because there is already a file called 's29gl.c' in board/altera/common.

However, I get "timeout" anytime I try to erase or write a sector.

I have tried to rename s29gl.c to s29gl_byte.c and changed the word access to byte access, but here again, I still get those "timeout".

Flash is at addr 0x00000000 so I have translated it to 0xC0000000, but still the same result (same at @F000 or E000...).

What am I doing wrong?

Thanks for any idea,

Fred

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