From: Ian Campbell <ijc@hellion.org.uk>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/2] sunxi: Set the AUXCR L2EN bit for sun4i/sun5i in FEL boot mode
Date: Mon, 21 Jul 2014 21:07:17 +0100 [thread overview]
Message-ID: <1405973237.4100.34.camel@hastur.hellion.org.uk> (raw)
In-Reply-To: <53C96BD4.1020307@myspectrum.nl>
On Fri, 2014-07-18 at 20:47 +0200, Jeroen Hofstee wrote:
> Hello Siarhei,
>
> On 18-07-14 19:09, Siarhei Siamashka wrote:
> > This is needed to have feature parity with the normal boot mode,
> > where the L2EN bit in the CP15 Auxiliary Control Register is set
> > by the BROM code right from the start.
> >
> > If this is not done, the Linux system ends up booted with the L2 cache
> > disabled.
> >
>
> I don't know a single about the sunxi, but shouldn't linux
> be patched instead. The commit message seems to indicate
> it is not an u-boot issue.
The ACTLR may not be writeable from NS mode so it has to be setup in the
bootloader before dropping to NS mode.
In any case I think these sorts of low level platform specific details
are the sort of thing which the bootloader probably ought to be setting
up.
Ian
next prev parent reply other threads:[~2014-07-21 20:07 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-18 17:09 [U-Boot] [PATCH 0/2] sunxi: FEL boot mode improvements Siarhei Siamashka
2014-07-18 17:09 ` [U-Boot] [PATCH 1/2] sunxi: Use Thumb2 and move stack to gain more SRAM space in FEL mode Siarhei Siamashka
2014-07-19 11:19 ` Hans de Goede
2014-07-21 18:31 ` Ian Campbell
2014-07-25 1:01 ` Siarhei Siamashka
2014-07-25 1:03 ` [U-Boot] [linux-sunxi] " Julian Calaby
2014-07-25 4:11 ` Julian Calaby
2014-07-25 6:56 ` [U-Boot] " Ian Campbell
2014-07-25 1:14 ` Siarhei Siamashka
2014-07-18 17:09 ` [U-Boot] [PATCH 2/2] sunxi: Set the AUXCR L2EN bit for sun4i/sun5i in FEL boot mode Siarhei Siamashka
2014-07-18 18:47 ` Jeroen Hofstee
2014-07-21 20:07 ` Ian Campbell [this message]
2014-07-21 20:39 ` Jeroen Hofstee
2014-07-21 20:59 ` Ian Campbell
2014-07-25 0:21 ` Siarhei Siamashka
2014-07-25 6:55 ` Ian Campbell
2014-07-19 11:20 ` Hans de Goede
2014-07-21 18:39 ` Ian Campbell
2014-07-21 20:34 ` Ian Campbell
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