From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: lib: memcpy: Do not copy to same address
Date: Fri, 12 Aug 2011 10:49:48 +0200 [thread overview]
Message-ID: <4E44E92C.4070908@aribaud.net> (raw)
In-Reply-To: <1306141610-24117-1-git-send-email-weisserm@arcor.de>
On 23/05/2011 11:06, Matthias Weisser wrote:
> In some cases (e.g. bootm with a elf payload which is already at the right
> position) there is a in place copy of data to the same address. Catching this
> saves some ms while booting.
>
> Signed-off-by: Matthias Weisser<weisserm@arcor.de>
> ---
> arch/arm/lib/memcpy.S | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/lib/memcpy.S b/arch/arm/lib/memcpy.S
> index 3b5aeec..f655256 100644
> --- a/arch/arm/lib/memcpy.S
> +++ b/arch/arm/lib/memcpy.S
> @@ -60,6 +60,9 @@
> .globl memcpy
> memcpy:
>
> + cmp r0, r1
> + moveq pc, lr
> +
> enter r4, lr
>
> subs r2, r2, #4
Applied to u-boot-arm/master, thanks.
Amicalement,
--
Albert.
prev parent reply other threads:[~2011-08-12 8:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 9:06 [U-Boot] [PATCH] arm: lib: memcpy: Do not copy to same address Matthias Weisser
2011-05-23 9:30 ` Alexander Holler
2011-05-23 9:46 ` Matthias Weißer
2011-05-23 9:51 ` Alexander Holler
2011-05-23 9:49 ` Albert ARIBAUD
2011-05-23 10:01 ` Alexander Holler
2011-07-26 6:02 ` Matthias Weißer
2011-08-12 8:49 ` Albert ARIBAUD [this message]
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