From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 0/5] dcache support for Raspberry Pi 1
Date: Mon, 6 Jul 2015 09:39:40 +0200 [thread overview]
Message-ID: <20150706093940.22ac123b@lilith> (raw)
In-Reply-To: <1436003324-8769-1-git-send-email-alexanders83@web.de>
Hello Alexander,
On Sat, 4 Jul 2015 11:48:39 +0200, Alexander Stein
<alexanders83@web.de> wrote:
> dcache supprt increases the MMC read performance on RPI 1 from 5,4 MiB/s to
> 12.3 MiB/s. It doesn't seem to have any affect on RPI 2 though. I just get
> error messages about non-cacheline aligned address upon invalidation.
Could it be that code needed to support dcache is not the same for
rpi_2's bcm2836 than it is for rpi's bcm2835?
Anyway: if code properly handles unaligned addresses then it should not
throw an error message about it. Can you look into why the error is
thrown?
> The performance stucks at 1.2 MiB/s.
>
> This was tested by the following command:
> > fatload mmc 0:1 ${kernel_addr_r} zImage
>
> Alexander Stein (5):
> arm1176/cpu: Match cache_flush to arm1136
> arm1176/cpu: Add icache and dcache support
> arm1176/cpu: Align cache flushing addresses to cacheline size
> arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw
> mailbox
> arm/rpi: Enable dcache
>
> arch/arm/cpu/arm1176/cpu.c | 114 +++++++++++++++++++++++++++++++++++++++++--
> arch/arm/mach-bcm283x/mbox.c | 6 +++
> include/configs/rpi-common.h | 1 -
> 3 files changed, 116 insertions(+), 5 deletions(-)
>
> --
> 2.4.5
>
Amicalement,
--
Albert.
next prev parent reply other threads:[~2015-07-06 7:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-04 9:48 [U-Boot] [PATCH 0/5] dcache support for Raspberry Pi 1 Alexander Stein
2015-07-04 9:48 ` [U-Boot] [PATCH 1/5] arm1176/cpu: Match cache_flush to arm1136 Alexander Stein
2015-07-11 5:20 ` Stephen Warren
2015-07-12 7:23 ` Alexander Stein
2015-07-04 9:48 ` [U-Boot] [PATCH 2/5] arm1176/cpu: Add icache and dcache support Alexander Stein
2015-07-11 5:21 ` Stephen Warren
2015-07-12 7:26 ` Alexander Stein
2015-07-14 4:57 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 3/5] arm1176/cpu: Align cache flushing addresses to cacheline size Alexander Stein
2015-07-11 5:21 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 4/5] arm/mach-bcm283x/mbox: Flush and invalidate dcache when using fw mailbox Alexander Stein
2015-07-11 5:24 ` Stephen Warren
2015-07-04 9:48 ` [U-Boot] [PATCH 5/5] arm/rpi: Enable dcache Alexander Stein
2015-07-11 5:24 ` Stephen Warren
2015-07-12 7:30 ` Alexander Stein
2015-07-14 4:57 ` Stephen Warren
2015-07-06 7:39 ` Albert ARIBAUD [this message]
2015-07-06 18:24 ` [U-Boot] [PATCH 0/5] dcache support for Raspberry Pi 1 Alexander Stein
2015-07-06 21:26 ` Albert ARIBAUD
2015-07-08 18:15 ` Alexander Stein
2015-07-08 22:47 ` Albert ARIBAUD
2015-07-11 5:17 ` Stephen Warren
2015-07-12 8:10 ` Alexander Stein
2015-07-14 5:02 ` Stephen Warren
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