From: 陈希 <xchen@sunrisetelecom.com.cn>
To: "'enorm'" <enorm@126.com>, <linuxppc-embedded@ozlabs.org>,
<linuxppc-embedded-request@ozlabs.org>
Cc: 'Elvis Ma' <npma@sunrisetelecom.com.cn>
Subject: Re: When I use ichache_enable or dcache_enable in uboot,it crash
Date: Fri, 8 Dec 2006 09:33:16 +0800 [thread overview]
Message-ID: <20061208013328.1749067A2E@ozlabs.org> (raw)
In-Reply-To: <001501c719fa$19e45020$8809a8c0@class>
Hi enorm
Thank you for your reply. In fact, the uboot has never disable
icache. The icache is enable at all times.And the code run in flash =
normally
when the icache is enable. I have to add disable_icache() in the
board_init_f() so that the code can run in ram normally. BTW, I just =
use
the function supported by uboot to enable icache&dcache, I'm sure the =
steps
of cache init have no problem. I just can't understand why the icache =
can
effect the code run in ram.
Thanks &Br,
Andy
-----=D3=CA=BC=FE=D4=AD=BC=FE-----
=B7=A2=BC=FE=C8=CB: enorm [mailto:enorm@126.com]=20
=B7=A2=CB=CD=CA=B1=BC=E4: 2006=C4=EA12=D4=C27=C8=D5 20:21
=CA=D5=BC=FE=C8=CB: =B3=C2=CF=A3; linuxppc-embedded@ozlabs.org;
linuxppc-embedded-request@ozlabs.org
=D6=F7=CC=E2: (Rising Spam Alert)Re: When I use ichache_enable or =
dcache_enable in
uboot,it crash
disable icache& dcache at the beginning is essential or else your =
program
will crash. Only when you do the proper initiation, can you enable them. =
For
details you can refer to you reference manual.
----- Original Message -----
From: "=B3=C2=CF=A3" <xchen@sunrisetelecom.com.cn>
To: <linuxppc-embedded@ozlabs.org>; =
<linuxppc-embedded-request@ozlabs.org>
Sent: Thursday, December 07, 2006 5:52 PM
Subject: When I use ichache_enable or dcache_enable in uboot,it crash
> Hi,
>
> In the very begin of the uboot, the dcache is disable and the icache
> is enable. The code runs in flash nomarlly. Then the uboot should jump =
to
> ram and if I don't disable icache the uboot will crash. I can't =
enable=20
> the
> dcache too. The more serious problem is that when I boot the linux =
kernel
> ,it will stop at init_mmu. I think it is the same reason. Please help =
me.
>
> Thanks & Br,
> Andy
>
>
-------------------------------------------------------------------------=
---
----
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded=20
next prev parent reply other threads:[~2006-12-08 1:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-07 9:52 When I use ichache_enable or dcache_enable in uboot,it crash 陈希
2006-12-07 12:20 ` enorm
2006-12-08 1:33 ` 陈希 [this message]
[not found] <4578C0DC.0D5B9A.00597>
2006-12-08 1:55 ` enorm
2006-12-08 2:43 ` 陈希
[not found] <20061208024333.C5FCB67B6F@ozlabs.org>
2006-12-08 7:48 ` 陈希
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