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

[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 at 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