flash bank switching & booting.

[jmullens]

Posted on February 08, 2008 at 10:08

flash bank switching & booting.

[jmullens]

Posted on May 17, 2011 at 09:49

/*

I have written an application that sits in bank 0, and have a bios sector in bank 1. I have not been able to get a function I've written to work that, I hope, will allow me to switch banks and run my bios routine in bank 1.

I can see from the Segger J-Flash utility, that my program is indeed there in bank 1, but I can't switch to it. Sending a ''0'' to this function resets the processor, and sending a ''1'' makes the processor hang, and only gets out of being hung by power cycling the board.

I am close to having a firmware download routine working, but am unable to get this part working. There is something simple I must be missing..Any help would be greatly appreciated.

Here is my routine:

My application starts at address 0x0, and the bios sector starts at 0x80000. I'm using the IAR4.41A compiler, and am using the STR912FAW44 version of the chip.

*/

typedef void (*pfunc)(void);

__ramfunc void bankSwitch(char bankNo)

{

pfunc jump2App;

if(bankNo){

FMI_BankRemapConfig(4,2,0,0x80000);

}else{

FMI_BankRemapConfig(0,6,0x80000,0);

}

jump2App = (pfunc)0x0;

jump2App();

}

[ This message was edited by: jmullens on 12-02-2008 03:35 ]

[jilisegiar]

Posted on May 17, 2011 at 09:49

Hi,

Segger offers a free tool(JlinkSTR91x.exe) allowing:

erase all flash

protect sector

switch boot bank

.....

The following link(segger forum) explains how to use this tool:

http://www.segger2.com/index.php?page=Thread&threadID=22

Rgds,