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: Thu, 19 Jan 2012 17:24:45 +0530 [thread overview]
Message-ID: <4F180485.7070004@ti.com> (raw)
In-Reply-To: <CABkLObr=xngHUnGmQfs85tecTx8fASiW1ULPS3VZbN_wN_uD6Q@mail.gmail.com>
On Thursday 19 January 2012 05:00 PM, Christian Riesch wrote:
> Hi Aneesh,
>
> On Thu, Jan 19, 2012 at 11:17 AM, Aneesh V<aneesh@ti.com> wrote:
>> On Thursday 19 January 2012 12:23 PM, Sughosh Ganu wrote:
>>> Tried a few things on my end.
>>> * Read the D-cache value in the spl, and confirmed that the data
>>> cache is indeed not enabled.
>> What is the value of the B bit in CP15 SCR register? I wonder if RBL is
>> doing all the IMB operations required after copying the SPL image and
>> before executing it. IMB is required for consistency between data and
>> instruction sides.
>
> Only if caches are used, right? Or also without caches?
> Tom wrote that RBL does not turn on cache.
> Regards, Christian
Only D-cache seems to be disabled in this case. I-cache and Write
buffer are likely to be enabled. If so, all the IMB operations except
the data-cache flushing are still relevant.
br,
Aneesh
next prev parent reply other threads:[~2012-01-19 11:54 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 [this message]
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
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.
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F180485.7070004@ti.com \
--to=aneesh@ti.com \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox