[U-Boot] Antw: Re: How to start U-Boot for i.MX31 NAND out of RedBoot (out of RAM)

[Wolfgang Denk]

Dear "Ulrich Gerster",

In message <4A5C71DA0200004D00014C8A at hochblauen.ba-loerrach.de> you wrote:
> 
> I can ping my linux host and I'm able to download a binary file via TFTP into RAM.
> But I'm not able to ping the boad with u-boot from my linux host. In my config-file I 
> defined CONFIG_NETMASK and CONFIG_IPADDR. What could be wrong?

Nothing is wrong. That's expected and documented behaviour.

> Another strange thing is the nand driver. I build my u-boot with:
> #define CONFIG_MX31_NAND   1
> #define CONFIG_CMD_NAND
> #define CONFIG_SYS_NO_FLASH   1
> #define CONFIG_ENV_IS_IN_NAND   1
> #define CONFIG_SYS_NAND_BASE   CS0_BASE
> #define CONFIG_SYS_MAX_NAND_DEVICE 	1
> #define CONFIG_SYS_NAND_MAX_CHIPS	1
> 
> If I then try to get "flinfo" information u-boot jumps to the next command line and prints nothing.

Seems you don't have NOR flash on your board, then (or no driver
configured for it).

> If I try "nand info" I get information about nand device 0.

OK.

> Another strange thing is that I can't read from nand flash but I can write.

That's indeed strange. How do you know you can write then when you
cannot read the data back for verification?

Best regards,

Wolfgang Denk

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