From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] command/cache: Add flush_cache command
Date: Tue, 19 Mar 2013 18:32:39 -0500 [thread overview]
Message-ID: <1363735959.16671.38@snotra> (raw)
In-Reply-To: <5148E1A5.4030502@freescale.com> (from yorksun@freescale.com on Tue Mar 19 17:07:33 2013)
On 03/19/2013 05:07:33 PM, York Sun wrote:
> On 03/19/2013 03:01 PM, Albert ARIBAUD wrote:
> > What's the point of this command exactly? I can see the point of
> range
> > flushes (and invalidates) in the code for drivers that use DMA, but
> as a
> > shell command, I fail to see the interest of it.
> >
>
> I am actually expecting this question. We have a situation that an
> application is copied by u-boot to its destination in memory. The code
> needs to be "seen" in the main memory. Without flushing cache, it is
> only visible to cores.
It's the same purpose as the cache flushing that happens in bootm,
except for code loading that happens outside bootm.
-Scott
next prev parent reply other threads:[~2013-03-19 23:32 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-19 20:29 [U-Boot] [RFC] command/cache: Add flush_cache command York Sun
2013-03-19 22:01 ` Albert ARIBAUD
2013-03-19 22:07 ` York Sun
2013-03-19 23:32 ` Scott Wood [this message]
2013-03-20 13:59 ` Albert ARIBAUD
2013-03-20 14:58 ` Wolfgang Denk
2013-03-20 16:43 ` Scott Wood
2013-03-20 17:38 ` Albert ARIBAUD
2013-03-20 18:16 ` Scott Wood
2013-03-20 19:15 ` Tom Rini
2013-03-20 19:36 ` Scott Wood
2013-03-20 19:59 ` Tom Rini
2013-03-20 21:31 ` Scott Wood
2013-03-21 5:42 ` Wolfgang Denk
2013-03-21 5:39 ` Wolfgang Denk
2013-03-21 12:29 ` Tom Rini
2013-03-21 13:37 ` Wolfgang Denk
2013-03-21 18:22 ` Scott Wood
2013-03-21 19:25 ` Wolfgang Denk
2013-03-21 20:34 ` Scott Wood
2013-03-22 6:30 ` Albert ARIBAUD
2013-03-22 12:17 ` Tom Rini
2013-03-22 14:03 ` Wolfgang Denk
2013-03-22 14:29 ` Tom Rini
2013-03-22 15:57 ` Albert ARIBAUD
2013-03-22 16:48 ` Scott Wood
2013-03-22 17:19 ` Tom Rini
2013-03-22 20:39 ` Wolfgang Denk
2013-03-20 22:11 ` Albert ARIBAUD
2013-03-20 22:35 ` Scott Wood
2013-03-20 23:33 ` Michael Cashwell
2013-03-20 23:48 ` Scott Wood
2013-03-21 0:27 ` Michael Cashwell
2013-03-21 0:31 ` Scott Wood
2013-03-21 5:02 ` Sricharan R
2013-03-21 18:51 ` Scott Wood
2013-03-21 17:58 ` Albert ARIBAUD
2013-03-21 18:07 ` Scott Wood
2013-03-21 19:21 ` Wolfgang Denk
2013-03-20 19:40 ` York Sun
2013-03-20 14:51 ` Wolfgang Denk
2013-03-20 16:44 ` Scott Wood
2013-04-03 14:02 ` Jim Chargin
2013-04-18 17:09 ` Scott Wood
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