BootLoader

All design tool related questions: compiler, assembler, linker. Embedded programming questions: assembler, C code.

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Rasmus77
Posts: 8
Joined: Thu Apr 30, 2009 9:47 am

BootLoader

Mon Jan 04, 2010 1:17 pm

Hey, I like to create a bootloader filer that will get an application on Compact flash card via Ethernet and load it to an Extern SD-Ram chip.

I am using 91SAM6260 processor and it has an fixed intern booting sequence that will look for boot files on Data Flash and Extern NAND Flash and load it in the intern S-Ram (Size 4 Kilo byte) and then run it from there.

I am using Eclipse to create a .bin file, but the size of the file is to large and cannot load itself in the S-Ram (even for a very small program).

My question is how load a boot file that will run every time reset is activated.

Regard Rasmus.
stefan192
Posts: 40
Joined: Fri Oct 19, 2007 10:18 am

Re: BootLoader

Thu Jan 07, 2010 12:26 pm

Hi,
you will have to split the bootloader into several parts.
The first part will be a very small bootloader, which is loaded and executed in S-RAM. This bootloader has to load the much bigger second bootloader into SD-RAM, where you may load an application e.g. from a memory card.

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