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bootloader problem

To: linux-mips@linux-mips.org <linux-mips@linux-mips.org>
Subject: bootloader problem
From: "He Jin" <thesistarball@yahoo.com.cn>
Date: Mon, 16 Jun 2003 17:32:40 +0800
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hi, everybody,

I met a problem when debuging a bootloader in IT8172G+RM5231A platform, it's 
like this:

the bootloader had 2 parts, the first part executes in ROM 
(0xbfc00000-0xbfc0xxxx) and
it move another part from ROM into SDRAM, then jump to the SDRAM entry point to 
continue.

In the ROM resident code, if I initialized&flushed the cache, it can jump to 
SDRAM entry
continue normally. However,if I comment out those cache related code and make 
cache disabled, 
it seems can not jump to SDRAM entry. 

Who can tell me why I must initialize&flush when cache disabled ? 

Thanks a lot!

He Jin  




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