From: Albert ARIBAUD <albert.u.boot@aribaud.net>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/2] ARM: add wfi assembly macro
Date: Sun, 3 Feb 2013 15:29:01 +0100 [thread overview]
Message-ID: <20130203152901.3e7637a7@lilith> (raw)
In-Reply-To: <1354503982-1124-1-git-send-email-robherring2@gmail.com>
Hi Rob,
On Sun, 2 Dec 2012 21:06:21 -0600, Rob Herring <robherring2@gmail.com>
wrote:
> From: Rob Herring <rob.herring@calxeda.com>
>
> Since wfi instruction is only available on ARMv7, add a conditional
> macro for it.
>
> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
> ---
> arch/arm/include/asm/system.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
> index 2b28a26..2f6aecd 100644
> --- a/arch/arm/include/asm/system.h
> +++ b/arch/arm/include/asm/system.h
> @@ -61,6 +61,12 @@
>
> #define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
>
> +#ifdef __ARM_ARCH_7A__
> +#define wfi() __asm__ __volatile__ ("wfi" : : : "memory")
> +#else
> +#define wfi()
> +#endif
> +
> static inline unsigned int get_cr(void)
> {
> unsigned int val;
Applied to u-boot-arm/master, thanks!
Amicalement,
--
Albert.
prev parent reply other threads:[~2013-02-03 14:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-03 3:06 [U-Boot] [PATCH 1/2] ARM: add wfi assembly macro Rob Herring
2012-12-03 3:06 ` [U-Boot] [PATCH 2/2] ARM: highbank: use wfi macro instead of inline asm Rob Herring
2013-02-03 14:29 ` Albert ARIBAUD
2012-12-03 4:58 ` [U-Boot] [PATCH 1/2] ARM: add wfi assembly macro Marek Vasut
2012-12-03 13:32 ` Rob Herring
2012-12-03 14:39 ` Marek Vasut
2013-02-03 14:29 ` Albert ARIBAUD [this message]
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