[U-Boot] [U-BOOT PROBLEM] RAM loading RAMdisk addresses

[Albert ARIBAUD]

Le 31/01/2011 14:43, GRACE, ERWAN (ERWAN)** CTR ** a écrit :
> Hello all,
>
> My name is Erwan Grâce, I'm French. Here's my issue : I had loaded the Flash memory of an electronic card with 2 RAMdisk which are supposed to be the same. However, when I checked the messages displayed on a screen at boot time, I observed that there were some differences between the 2 RAMdisk :
>
> Messages displayed for the 1st RAMdisk :
>
> ## Booting image at ffb00000 ...
>     Image Name:   Linux-2.6.10_mvlcge401-8560ads
>     Image Type:   PowerPC Linux Kernel Image (gzip compressed)
>     Data Size:    1662041 Bytes =  1.6 MB
>     Load Address: 00000000
>     Entry Point:  00000000
>     Verifying Checksum ... OK
>     Uncompressing Kernel Image ... OK
> ## Loading RAMDisk Image at fc100000 ...
>     Image Name:   tcifl.ramdisk
>     Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
>     Data Size:    42466734 Bytes = 40.5 MB
>     Load Address: 00000000
>     Entry Point:  00000000
>     Verifying Checksum ... OK
>     Loading Ramdisk to 15780000, end 17fffdae ... OK
>
> Messages displayed for the 2nd RAMdisk :
>
> ## Booting image at ffb00000 ...
>     Image Name:   Linux-2.6.10_mvlcge401-8560ads
>     Image Type:   PowerPC Linux Kernel Image (gzip compressed)
>     Data Size:    1662041 Bytes =  1.6 MB
>     Load Address: 00000000
>     Entry Point:  00000000
>     Verifying Checksum ... OK
>     Uncompressing Kernel Image ... OK
> ## Loading RAMDisk Image at fc100000 ...
>     Image Name:   tcifl.ramdisk
>     Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
>     Data Size:    42451540 Bytes = 40.5 MB
>     Load Address: 00000000
>     Entry Point:  00000000
>     Verifying Checksum ... OK
>     Loading Ramdisk to 15783000, end 17fff254 ... OK
>
> As you can notice, the 2 RAMdisk seem to be different but I don't
> know  why. I just observe that they have different size and they are
> not loaded at the same address in RAM memory. I precise that I didn't
> build this RAMdisk. Can someone help me to understand what is the root
> cause of these differences, please ? Thank you very much for your help.

Hi Erwan,

I'm afraid this is absolutely not related to U-Boot. I can just offer 
the remark that iminfo shows your ramdisks differ in their rootfs part.

If you have any additional question, feel free to e-mail me -- in 
private, to avoid noise on the U-Boot list.

> Best regards,
>
> Erwan Grâce

Amicalement,
-- 
Albert.