[U-Boot] [PATCH v2 15/21] Refactor the bootm command to reduce code duplication

[Stefan Roese]

Hi Simon,

On 06/11/2013 08:14 PM, Simon Glass wrote:
> At present the bootm code is mostly duplicated for the plain 'bootm'
> command and its sub-command variant. This makes the code harder to
> maintain and means that changes must be made to several places.
> 
> Introduce do_bootm_states() which performs selected portions of the bootm
> work, so that both plain 'bootm' and 'bootm <sub_command>' can use the
> same code.
> 
> Additional duplication exists in bootz, so tidy that up as well. This
> is not intended to change behaviour, apart from minor fixes where the
> previously-duplicated code missed some chunks of code.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>

Simon, this patch breaks bootm (at least on powerpc), while booting an
compressed uImage (with DT). It just hangs while decompressing the
kernel image:

## Booting kernel from Legacy Image at 01000000 ...
   Image Name:   Linux-3.5.7
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:    2203312 Bytes = 2.1 MiB
   Load Address: 00000000
   Entry Point:  00000000
## Flattened Device Tree blob at 01800000
   Booting using the fdt blob at 0x1800000
   Uncompressing Kernel Image ...

I bisected mainline and this patch is the one that breaks booting:

[stefan at ubuntu-2012 u-boot ((983c72f...)|BISECTING)]$ git bisect good
35fc84fa1ff51e15ecd3e464dac87eb105ffed30 is the first bad commit
commit 35fc84fa1ff51e15ecd3e464dac87eb105ffed30
Author: Simon Glass <sjg at chromium.org>
Date:   Tue Jun 11 11:14:47 2013 -0700

    Refactor the bootm command to reduce code duplication


I already looked what might be wrong but I couldn't find any problem
upon a quick glance. You know this code may better. Perhaps you could
take look at it and give it a try as well.

Thanks,
Stefan