Re: [PATCH 1/2] add 2nd generation default env

[Sascha Hauer <s.hauer@pengutronix.de>]

On Sun, Apr 15, 2012 at 06:57:09PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 18:22 Sun 15 Apr     , Sascha Hauer wrote:
> > The current default environment grows in complexity and still is
> > quite unflexible. The basic mistake we (or better I) made is that
> > we had a boot script and tried to control its behaviour with
> > variables passed to this script. This had the consequence that
> > with every new feature we had to pass another variable to this
> > script and add another if/else to the script. This environment
> > set inverts this behaviour. It introduces a set of helper functions
> > which /env/config can use to do its job.
> > 
> > The helpers are:
> > 
> > /env/bin/ifup
> > 
> > bring up networking. Uses /env/network/$interface to configure the
> > interface. If something has to be done to discover the interface (for
> > USB devices), the code can be put into /env/network/${interface}-discover
> > 
> > /env/bin/bootargs-root-*
> > 
> > Add fields to $bootargs relevant for the kernel to find its rootfs. We
> > currently have helpers for ubi, nfs, initrd and jffs2
> > 
> > /env/bin/bootargs-ip-*
> > 
> > Add fields to $bootargs relevant for the kernel to configure networking.
> > Currently we have helpers for dhcp, static or ip=none
> > 
> > /env/bin/mtdparts-init
> > /env/bin/mtdparts-add
> > 
> > Add barebox partitions to mtd like devices and construct the mtdparts
> > Kernel option.
> > 
> > Additionally the automount feature is used to transparently mount
> > filesystems. With this only the device/file which contains the kernel
> > has to be specified in /env/config.
> 
> can you give us few days to try before apply it

Sure, no problem. In fact I would be glad to get some feedback on this.
Changing the defaultenv can be quite painful later when the board files
are changed.
I am sure though that something like that is needed, the current
defaultenv doesn't bring us much further.

Sascha


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