[u-boot] hwo to setup ENV in compile time

BTW: U-boot log messages are:

<div class='quotetop'>QUOTE </div>

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U-Boot 1.1.3 (Oct 18 2005 - 22:47:52)

CPU : Nios-II

SYSID : a8236031, Mon Sep 26 05:20:57 2005

BOARD : Psyent PK-1C20

*** Warning - bad CRC, using default environment[/b]

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I find environment is not stored correctly, or maybe I stored nothing as I just did :

0. modify PK1C20.h to meet my custom board

1. make PK1C20_config

2. make

Hi ,

> *** Warning - bad CRC, using default environment

This indicates that the environment was not saved to NV memory.

> I notice that my flash is AM29LV128,while using AM29065D.C, and their CFI

> commands is not the same. So I just modified AM29065D.c to meet AM29LV128.

> Like here, erasing successed but writing failed.

You need to modify the flash driver, make sure you set the appropriate number

of sectors, etc.

> Please help me to figure out how to setup ENV in compile time, to modify which

> c-file to determine bootcmd?

Put it in your configuration header file. For example, for the PK1C20 board, it would

go in the include/configs/PK1C20.h file. The generic way is with the

CONFIG_EXTRA_ENV_SETTINGS macro:

# define CONFIG_EXTRA_ENV_SETTINGS

"myvar=somthing\0"

"hostname=MyHost\0"

""

There are many "standard" environment variables that have their own macros:

# define CONFIG_BOOTCOMMAND "run net_nfs"# define CONFIG_BOOTDELAY 5# define CONFIG_ETHADDR 08:00:3e:26:0a:5b# define CONFIG_NETMASK 255.255.255.0# define CONFIG_IPADDR 192.168.2.21# define CONFIG_SERVERIP 192.168.2.16

etc.

You&#39;ll need to review the README file.

Regards,

--Scott

Hi mountain8848,

Something that just caught my eye:

cmd=(vu_char *)0x555;//20051018:according AM29LV128 CFI commands

writeb (cmd, 0xaa);

If you&#39;re using the device in 16-bit mode, you have to change a few things.

When you port from the 065 to the 128, you have to change to vu_char to

vu_short, writeb()/readb() to writew()/readw(), etc.

But you might find it easier to grab an existing implementation (e.g. from the

tqm5200 or xsengine board tree). If you&#39;re not using a data cache you won&#39;t

have to worry about using writew/readw.

Regards,

--Scott

Hi Scott,

I let AM29LV128 only in 8-bit mode by connect BYTEn pin to GND.