Example of ARM based linux board using initramfs and serial console

[Alexander Wolfson]

This is what I am doing as well.
Usually there is a statically linked program in the /bin called busybox which provides big chunk of expected command line functionality.

All the programms - bash, ash, ls, ping, ... are slinks to busybox (init as well) and busybox checks ARGV[0] for the name that was used to call it and acts accordingly. It still has to be part of some filesystem and this is where the problem is. I am doing something wrong creating the initramfs and linking it with the kernel or something is wrong with my busybox or this is something else that I am not even think of.

Alex

-----Original Message-----
From: gnhlug-discuss-bounces at mail.gnhlug.org on behalf of John Abreau
Sent: Thu 7/10/2008 5:59 PM
To: gnhlug-discuss at mail.gnhlug.org
Subject: RE: Example of ARM based linux board using initramfs and serial console
 

On Thu, July 10, 2008 4:08 pm, Alexander Wolfson said:
> This is our own board based on our own chip which among other things has
> ARM926EJ-S (ARMv5TEJ) core.
> There is no BSP yet, no Flash or USB drivers - only limited access to
> the board over JTAG. We can boot the board up to the point when kernel
> dies because there is no init. This why I need initramfs now.
>


While i don't know the details, I understand that it's common practice
when porting to a new platform to use bash, or perhaps a simpler shell,
in place of init, as a first step to achieve an initial boot.


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