From mboxrd@z Thu Jan  1 00:00:00 1970
From: Detlev Zundel <dzu@denx.de>
Date: Mon, 20 Jan 2014 12:23:54 +0100
Subject: [U-Boot] booting os 'Unknown OS' (1) is not supported
In-Reply-To: <CABtOAfzG3B-eis0nDOiYtdq2rig_wP6SF2_jz=NLWw7Gp+PE2A@mail.gmail.com>
	(Alexander Khryukin's message of "Mon, 20 Jan 2014 14:33:41 +0400")
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To: u-boot@lists.denx.de

Hi Alexander,

> link to my u-boot https://github.com/fedya/u-boot-yse5250
>
>>Please change the boot command and include the commands
>
> Changed to this
> bootcmd=md 40800000 10;imi 40800000;bootm 40800000
>
> [YSE5250 at omv]# boot
> 40800000: 56190527 ba6b0d61 9850d952 08484800    '..Va.k.R.P..HH.
> 40800010: 00800040 00800040 8a221c4c 00020205    @... at ...L.".....
> 40800020: 756e694c 2e332d78 302e3331 3863722d    Linux-3.13.0-rc8
> 40800030: 00000000 00000000 00000000 00000000    ................
>
> ## Checking Image at 40800000 ...
>    Legacy image found
>    Image Name:   Linux-3.13.0-rc8
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    4737032 Bytes = 4626 KiB
>    Load Address: 40008000
>    Entry Point:  40008000
>    Verifying Checksum ... OK
> ## Current stack ends at 0xc3cfbcc8 *  kernel: cmdline image address =
> 0x40800000
> ## Booting kernel from Legacy Image at 40800000 ...
>    Image Name:   Linux-3.13.0-rc8
>    Image Type:   ARM Linux Kernel Image (uncompressed)
>    Data Size:    4737032 Bytes = 4626 KiB
>    Load Address: 40008000
>    Entry Point:  40008000
>    Verifying Checksum ... OK
>    kernel data at 0x40800040, len = 0x00484808 (4737032)
> ## No init Ramdisk
>    ramdisk start = 0x00000000, ramdisk end = 0x00000000
>    Loading Kernel Image ... OK
> OK
>    kernel loaded at 0x40008000, end = 0x4048c808
> ERROR: booting os 'Unknown OS' (1) is not supported

This is really weird and I am pretty sure that this is not supposed to
happen with the code that we have in mainline.  I think you have two
options here:

1. Get mainline U-Boot running on your board that works with the uImage
   that os created from mainline Linux

2. Debug your U-Boot version why it does not handle the uImage like it
   is supposed to.

Option 1 will be the more rewarding alternative of course.

Best wishes
  Detlev

-- 
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