[U-Boot] [PATCH V6] BOOT: Add "bootz" command to boot Linux zImage on ARM

[Marek Vasut <marek.vasut@gmail.com>]

Dear Rob Herring,

> On 03/15/2012 04:10 PM, Rob Herring wrote:
> > On 03/15/2012 03:29 PM, Marek Vasut wrote:
> >> Dear Rob Herring,
> >> 
> >>> On 03/15/2012 02:05 PM, Marek Vasut wrote:
> >>>> Dear Rob Herring,
> >>>> 
> >>>>> On 03/15/2012 02:52 AM, Marek Vasut wrote:
> >>>>>> From: Marek Vasut <marek.vasut@gmail.com>
> >>>>>> 
> >>>>>> This command boots Linux zImage from where the zImage is loaded to.
> >>>>>> Passing initrd and fdt is supported.
> >>>>> 
> >>>>> This is great! However, the initrd is still in the u-boot image
> >>>>> format, right?
> >>>>> 
> >>>>> If a raw initrd is supported, then we could get rid of flash-kernel
> >>>>> on disk-based debian/ubuntu systems. The file size is known from the
> >>>>> filesystem, but then needs to get to the bootz command somehow.
> >>>> 
> >>>> Yes. Initrd still needs a bit of work, ideas?
> >> 
> >> You lost some people in the Cc ;-)
> > 
> > They weren't in the original email header, only in the commit log as
> > Cc's.
> > 
> >>> How about:
> >>> 
> >>> bootz <kern addr> [<fdt addr> [<initrd addr> [<initrd size>]]]
> >> 
> >> What about bootz <kern addr> <initrd addr>[:<initrd size>] <fdt addr>
> >> 
> >> example: bootz 0x12000000 0x13000000:0x40000 0x14000000
> > 
> > Sure. That works for me.
> > 
> >>> I changed the order so the size can be optional without resorting to
> >>> using a "-". Then no size means u-boot image format.
> >>> 
> >>> File load commands would need to set loadsize env var.
> >> 
> >> If you load kernel after initrd, that's screw things up.
> > 
> > Yes, but you already have to be aware of some commands which will change
> > env vars. This has to be script-able to be useful. The only other way I
> > see is adding a command to get the size of a file. Perhaps the ls
> > commands when given a single file can do that.
> 
> Turns out there is already a filesize variable that gets set on file
> load commands.
> 
> And RTFM didn't help as that one is not documented... ;)

Rob, I just send in support for RAW initrd. Can you give it a go?

Best regards,
Marek Vasut