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Re: File system on IDE based flash

From: Andrew Lunn <andrew at lunn dot ch>
To: "Kondaiah, Dasari (IE10)" <Kondaiah at honeywell dot com>
Cc: ecos-discuss at sources dot redhat dot com
Date: Thu, 13 Jan 2005 13:30:24 +0100
Subject: Re: [ECOS] File system on IDE based flash
References: <77ED2BF75D59D1439F90412CC5B1097417A27A1D@ie10-sahara.hiso.honeywell.com>

On Thu, Jan 13, 2005 at 04:21:52AM -0700, Kondaiah, Dasari (IE10) wrote:
> Hi,
> 
> 
> I am trying to support jfss2 file system on a compact flash.
> 
> flash is not on the board itself, it is a IDE based interface.
> 
> Can any body give me some pointers, how to put the file system on the IDE
> based compact flash.

Take a look at

packages/io/flash/current/src/flashiodev.c

You need to implement this interface to access your IDE device. jffs2
binds onto this interface for accessing the flash devices.

Question: Do you really need jffs2? Would FAT be OK. There is already
a generic IDE disk layer which FAT can use. All you need to do is
provide the HAL_IDE_* functions for your IDE bus and FAT should then
work. This is probably a lot less work than getting jffs2 working.

        Andrew

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