[U-Boot] [U-Boot,3/4] dumpimage: fit: extract FIT images

[Tom Rini]

On Thu, Jan 15, 2015 at 02:54:42AM -0200, Guilherme Maciel Ferreira wrote:

> The dumpimage is able to extract components contained in a FIT image:
> 
>   $ ./dumpimage -T flat_dt -i CONTAINER.ITB -p INDEX FILE
> 
> The CONTAINER.ITB is a regular FIT container file. The INDEX is the poisition
> of the sub-image to be retrieved, and FILE is the file (path+name) to save the
> extracted sub-image.
> 
> For example, given the following kernel.its to build a kernel.itb:
> 
>   /dts-v1/;
>   / {
>       ...
>       images {
>         kernel at 1 {
>           description = "Kernel 2.6.32-34";
>           data = /incbin/("/boot/vmlinuz-2.6.32-34-generic");
>           type = "kernel";
>           arch = "ppc";
>           os = "linux";
>           compression = "gzip";
>           load = <00000000>;
>           entry = <00000000>;
>           hash at 1 {
>             algo = "md5";
>           };
>         };
>         ...
>       };
>       ...
>     };
> 
> The dumpimage can extract the 'kernel at 1' node through the following command:
> 
>   $ ./dumpimage -T flat_dt -i kernel.itb -p 0 kernel
>   Extracted:
>    Image 0 (kernel at 1)
>     Description:  Kernel 2.6.32-34
>     Created:      Wed Oct 22 15:50:26 2014
>     Type:         Kernel Image
>     Compression:  gzip compressed
>     Data Size:    4040128 Bytes = 3945.44 kB = 3.85 MB
>     Architecture: PowerPC
>     OS:           Linux
>     Load Address: 0x00000000
>     Entry Point:  0x00000000
>     Hash algo:    md5
>     Hash value:   22352ad39bdc03e2e50f9cc28c1c3652
> 
> Which results in the file 'kernel' being exactly the same as '/boot/vmlinuz-2.6.32-34-generic'.
> 
> Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira at gmail.com>

Applied to u-boot/master, thanks!

-- 
Tom
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