[U-Boot-Users] MC5282Lite evaluation board - running from externalflash

[Liew Tsi Chung-r5aahp]

Erez,

	There is a error if the TEXT_BASE set to 0xffe00000. Following
is the fix for the problem.

#if defined(CONFIG_R5200)
.long	0x400
#elif defined(CONFIG_M5282) && (TEXT_BASE == CFG_INT_FLASH_BASE)
.long	_start - TEXT_BASE
#else
.long	_START
#endif

	/* if we come from a pre-loader we have no exception table and
	 * therefore no VBR to set
	 */
#if !defined(CONFIG_MONITOR_IS_IN_RAM)
#if defined(CONFIG_M5282) && (TEXT_BASE == CFG_INT_FLASH_BASE)
	move.l	#CFG_INT_FLASH_BASE, %d0
	movec	%d0, %VBR
#else
	move.l	#CFG_FLASH_BASE, %d0
	movec	%d0, %VBR
#endif			/* CONFIG_M5282 */
#endif

Regards,
TsiChung 

-----Original Message-----
From: u-boot-users-bounces at lists.sourceforge.net
[mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf Of Erez
Koelewyn
Sent: Tuesday, October 16, 2007 11:13 AM
To: u-boot-users at lists.sourceforge.net
Subject: [U-Boot-Users] MC5282Lite evaluation board - running from
externalflash

Hi,

I think there is an issue when trying to run U-Boot from flash on this
board.
So far I was only able to boot U-Boot when I load in to the cpu's
internal flash (I need to change the TEXT_BASE value to match that of
the internal flash base).

When I burn the U-Boot image to external flash and run it I can see that
immediately after setting the chip selects in function cpu_init_f (in
/cpu/mcf52x2/cpu_init.c under the #if defined(CONFIG_M5282) block),
since the program counter still points to an address that is now
suddenly in RAM (since we set the external flash base address to
0xffe00000) we cannot go on (there is no code there).

Did anyone else see this problem? Was it addressed?

Thanks & regards,

Erez

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