[U-Boot] how to use u-boot to relocate an executeable to a static address in RAM?

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From: easter8 at hotmail.com
To: u-boot at lists.denx.de
Subject: how to use u-boot to relocate an executeable to a static address in RAM?
Date: Wed, 16 May 2012 00:23:12 +0000





Hi,

 

Please correct me if I am wrong. From what I understand, u-boot itself is relocated to RAM by calling 

the procedure: relocate_code at the end of the procedure: board_init_f . 

 

There is a need for me to load an executable to a static address (say, 0x82xx_xxxx) in RAM such that 

control could be passed to this executable from U-boot. How could this be accomplished, with the

limitation that:

 

the executeable is to be downloaded together with u-boot.bin, zImage, ramdisk and other images

that are to be be executed before u-boot etc, as a blob onto the eMMC?

 

 

Could u-boot be used to relocate the said executable to the address: 0x82xx_xxxx? u-boot does not

have the knowledge where this executable resides in eMMC. This also means that it would not be possible

to use u-boot command: cp (memory copy) to do the relocation, as the command itself requires knowledge

of the source address.

 

Any comment or suggestions would be greatly appreciated.

 

 

Thanks,

 

Ivan