AMD Flash Interface for updating boot flash

Hello all,

I have been searching the archives and I am a bit confused, so bear with me if this is too simple a question.

I need to provide a way to update my boot flash from user space.
Our user application will download an boot flash image and save it (to a file or a buffer), we must then write the flash. I have seen references in the archives to Denx's drivers/char/amd_flash.c and to MTD drivers, or I can implement my own driver, but I'm not sure of the best (i.e. easiest and cleanest) way.

I don't need to put a file system on the flash. All it does is hold the PPCBoot image. The flash part is an AMD 29LV004B and is setup for 8 bit interface. I am running a 2.4.17 kernel on an 8245.

Any suggestions?

Thanks,

Chuck

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Just define your flash as a MTD device and then, from user space use dd command to copy your bootloader to flash:

dd if=bootloader of=/dev/mtdblock0

Best Regards,
Michael Meriin

----- Original Message -----
From: "Chuck Partridge" <[email protected]>
To: <[email protected]>
Sent: Wednesday, June 26, 2002 17:09
Subject: AMD Flash Interface for updating boot flash

me if this is too simple a question.

file or a buffer), we must then write the flash.

and to MTD drivers, or I can

cleanest) way.

PPCBoot image. The flash part is an AMD

on an 8245.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/