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From: Aneesh V <aneesh@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/2 V2] arm926: Flush the data cache before disabling it.
Date: Fri, 20 Jan 2012 17:43:22 +0530	[thread overview]
Message-ID: <4F195A62.7030207@ti.com> (raw)
In-Reply-To: <CABkLOboGwJkDYgrS3L7UCRtFHt123B92-V+2=t1RNiWLHQAJVQ@mail.gmail.com>

On Friday 20 January 2012 02:51 PM, Christian Riesch wrote:
> Hi Aneesh,
>
> On Fri, Jan 20, 2012 at 9:52 AM, Aneesh V<aneesh@ti.com>  wrote:
>> Sughosh,
> [...]
>> Can you send the value of SCR you found at SPL entry? This will clarify
>> what's enabled and what's not.
>
> I would like to try that on my board as well for comparison. Could you
> please tell me how this register can be read? In the ARM manuals SCR
> seems to have several meanings... Thank you!
> Regards, Christian

If you have a JTAG based debugger that has the capability of displaying
CP15 registers, look for "CP15 System Control Register". Otherwise you
will have to read it using an assembly instruction like below:

	mrc	p15, 0, r0, c1, c0, 0

After this instruction r0 will contain the SCR value. arm926ejs/start.S
has this instruction at line #367. You can put a breakpoint after this
and look at r0.

br,
Aneesh

  reply	other threads:[~2012-01-20 12:13 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-09 18:25 [U-Boot] [PATCH 1/2] Flush the date cache before disabling it Sughosh Ganu
2012-01-09 18:41 ` Mike Frysinger
2012-01-09 18:51   ` Sughosh Ganu
2012-01-10 18:12 ` [U-Boot] [PATCH 1/2 V2] arm926: Flush the data " Sughosh Ganu
2012-01-10 20:07   ` Marek Vasut
2012-01-11  6:20     ` Sughosh Ganu
2012-01-11 10:47       ` Marek Vasut
2012-01-11 12:11         ` Sughosh Ganu
2012-01-11 12:42           ` Marek Vasut
2012-01-11 13:31             ` Sughosh Ganu
2012-01-11 13:51               ` Marek Vasut
2012-01-11 13:52                 ` Marek Vasut
2012-01-11 14:50                   ` Sughosh Ganu
2012-01-11 15:01                     ` Marek Vasut
2012-01-11 15:09                       ` Sughosh Ganu
2012-01-11 18:50                         ` Marek Vasut
2012-01-11 21:07                           ` Christian Riesch
2012-01-11 22:13                             ` Marek Vasut
2012-01-12  5:56                               ` Christian Riesch
2012-01-12  6:29                                 ` Sughosh Ganu
2012-01-14  9:09                                   ` Albert ARIBAUD
2012-01-14 17:18                                     ` Christian Riesch
2012-01-12 12:03   ` Christian Riesch
2012-01-12 13:53     ` Sughosh Ganu
2012-01-12 14:04       ` Christian Riesch
2012-01-12 14:43         ` Sughosh Ganu
2012-01-14 17:20           ` Christian Riesch
2012-01-14 18:02             ` Sughosh Ganu
2012-01-13  8:06   ` Christian Riesch
2012-01-13  8:26     ` Sughosh Ganu
2012-01-13 14:41       ` Tom Rini
2012-01-13 17:23         ` Sughosh Ganu
2012-01-13 15:29       ` Heiko Schocher
2012-01-13 17:38         ` Sughosh Ganu
2012-01-13 18:19           ` Aneesh V
2012-01-14  7:45             ` Sughosh Ganu
2012-01-15  8:13           ` Heiko Schocher
2012-01-16 17:57           ` Tom Rini
2012-01-17  6:39             ` Heiko Schocher
2012-01-17  6:46             ` Sughosh Ganu
2012-01-17 15:27               ` Tom Rini
2012-01-19  6:53                 ` Sughosh Ganu
2012-01-19 10:17                   ` Aneesh V
2012-01-19 11:30                     ` Christian Riesch
2012-01-19 11:54                       ` Aneesh V
2012-01-20  7:28                         ` Christian Riesch
2012-01-20  8:52                           ` Aneesh V
2012-01-20  9:21                             ` Christian Riesch
2012-01-20 12:13                               ` Aneesh V [this message]
2012-01-20 12:48                                 ` Christian Riesch
2012-01-20 13:06                                   ` Aneesh V
2012-01-27 18:33                                     ` Tom Rini
2012-01-29 13:36                                       ` Christian Riesch
2012-01-30  6:39                                         ` Heiko Schocher
2012-01-30  8:10                                           ` Christian Riesch
2012-01-30  9:04                                             ` Sughosh Ganu
2012-01-30 10:38                                           ` Christian Riesch
2012-01-30  7:06                                         ` Sughosh Ganu
2012-01-30 17:03                                         ` Tom Rini
2012-01-31  4:09                                           ` Sughosh Ganu
2012-01-31 13:58                                           ` Christian Riesch
2012-01-20 11:56                           ` Tom Rini
2012-01-13 15:06     ` Heiko Schocher
2012-01-13 17:22       ` Sughosh Ganu
2012-01-14  7:49   ` [U-Boot] [PATCH 1/2 V3] " Sughosh Ganu
2012-01-14  9:02     ` Albert ARIBAUD
2012-01-14  9:21       ` Sughosh Ganu
2012-01-14 10:34         ` Albert ARIBAUD
2012-01-14 14:02     ` [U-Boot] [PATCH 1/2 V4] " Sughosh Ganu
2012-02-18 15:41       ` Albert ARIBAUD
2012-02-18 18:51         ` [U-Boot] [PATCH 1/2 V3] " Christian Riesch
2012-02-19  8:31           ` Albert ARIBAUD
2012-01-20  9:22   ` [U-Boot] [PATCH 1/2 V2] " James W.

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