[U-Boot-Users] Configuring Spansion flash

Yasothabalan
2007-09-17T06:52:37Z

Thanks Ben and Jerry I have fixed the my flash issued.

Is there any way to test the EEPROM through Uboot code?

Thanks in advance.

Regards,
Yasotha Balan R

-----Original Message-----
From: Jerry Van Baren [mailto:gerald.vanbaren at smiths-aerospace.com]
Sent: Friday, September 14, 2007 9:05 PM
To: Yasothabalan Ramaswamy-TLS,Chennai
Cc: Ben Warren; u-boot-users at lists.sourceforge.net
Subject: Re: [U-Boot-Users] Configuring Spansion flash

Yasothabalan Ramaswamy-TLS,Chennai wrote:
> So how shall I proceed next Ben.
> Where and in which file this configuration is done?
>
> Whenever I trace out which flash is detected, it always gets detects
as
> FLASH_UNKNOWN.

It would appear you have something misconfigured in your hardware or
u-boot software. We know basically zero about either, so you will have
to work the problem with only generic hints from the list.

Start by verifying the chip select to your flash part is being driven
properly.

Once you are sure your hardware is driving the flash OK, use u-boot
memory read and write commands to send the CFI manufacturer ID commands.

When you figure out how to do CFI commands manually so that the flash
responds, your misconfiguration of hardware/software should be very
obvious.

The following message thread goes into more details, simply substitute
u-boot memory read/write commands for BDI configuration read/write
commands.
<http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=3173
0>

Good luck,
gvb

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