Rainbow-electronics QIL-A9260-C11 Manual de usuario descargar pdf (Pagina 4)

SECTION 2

1. QIL-A9260 from scratch

1.1. AT91Bootstrap

The AT91Bootstrap loader is used to download the second level bootloader that is to say

UBOOT from the NAND Flash memory. When the AT91SAM9260 boots, the AT91

Bootstrap loader is copied into the 4Kbytes internal SRAM and executed by branching at

address 0x0000_0000 after remap.

Here are the steps needed to compile the AT91bootstrap loader.

● Download the source code from the calao ftp site

● cd AT91BOOTLOADER/board/qil-a9260/nandflash/

● Edit the make file to set the name of the cross compiler you are using.

set CROSS_COMPILE=arm-elf- for example

● then issue the make command

Datasheet GSG-00006-A01 4/34

The file generated by your cross-compiler should be less than 4096 bytes.

For more information about the AT91 Bootstrap loader see the following link:

http://www.atmel.com/dyn/resources/prod_documents/doc6277.pdf

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Rainbow-electronics QIL-A9260-C11 Manual de usuario Pagina 4