Hi,
I am a newbie to Linux.I have to develop an
embedded linux controller that boots from the Compact
flash card instead of the HD and work from RAM. I have
to have a bare minimum implementation of Linux kernel
to do this.
I don't know where to start. Shud I start by writing
the driver for the CF card? What background knowledge
shud I have for implementing the kernel?
Please Help.Thanks
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On Thu, Jan 24, 2002 at 10:52:37PM -0800, Ramya Ravichandran wrote:
> Hi,
>
> I am a newbie to Linux.I have to develop an
> embedded linux controller that boots from the Compact
> flash card instead of the HD and work from RAM. I have
> to have a bare minimum implementation of Linux kernel
> to do this.
> I don't know where to start. Shud I start by writing
> the driver for the CF card? What background knowledge
> shud I have for implementing the kernel?
The compact flashes appear to PCMCIA as removable IDE drives.
Unless the PCMCIA-CF adapter is more than just two connectors
plus a set of wires in between, you should have no problems
at all. Either IDE, or IDE_CS driver should do it.
(The IDE_CS will, of course, need the PCMCIA suite too to
support removable media. IDE doesn't support removability.)
To boot from CF you need support in your boot-rom/flash
code. Something which might not be true, unless you write
it yourself..
> Please Help.Thanks
/Matti Aarnio
What if the CF connects to the IDE bus with an adapter? Whould the IDE-CS
still work or do you mean the IDE chipset itself doesn't support hot swapping
or removable drives? Also what kind of support is there for USB CF
read/writers?
GO
On Friday 25 January 2002 02:37, Matti Aarnio wrote:
> On Thu, Jan 24, 2002 at 10:52:37PM -0800, Ramya Ravichandran wrote:
> > Hi,
> >
> > I am a newbie to Linux.I have to develop an
> > embedded linux controller that boots from the Compact
> > flash card instead of the HD and work from RAM. I have
> > to have a bare minimum implementation of Linux kernel
> > to do this.
> > I don't know where to start. Shud I start by writing
> > the driver for the CF card? What background knowledge
> > shud I have for implementing the kernel?
>
> The compact flashes appear to PCMCIA as removable IDE drives.
> Unless the PCMCIA-CF adapter is more than just two connectors
> plus a set of wires in between, you should have no problems
> at all. Either IDE, or IDE_CS driver should do it.
> (The IDE_CS will, of course, need the PCMCIA suite too to
> support removable media. IDE doesn't support removability.)
>
> To boot from CF you need support in your boot-rom/flash
> code. Something which might not be true, unless you write
> it yourself..
>
> > Please Help.Thanks
>
> /Matti Aarnio
> -
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Look at the Embedded Coyote Linux project at
http://www.coyotelinux.com/embedded/docs/cflash.php . It may give you
some hints on the subject.
/Pedro
On 24 Jan 2002 at 22:52, Ramya Ravichandran wrote:
> Hi,
>
> I am a newbie to Linux.I have to develop an
> embedded linux controller that boots from the Compact
> flash card instead of the HD and work from RAM. I have
> to have a bare minimum implementation of Linux kernel
> to do this.
> I don't know where to start. Shud I start by writing
> the driver for the CF card? What background knowledge
> shud I have for implementing the kernel?
>
> Please Help.Thanks
>