linux-kernel - Re: GEODE: use symbolic constant in cs5536 reboot fixup

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Date:	Thu, 18 Oct 2007 13:36:29 -0600
From:	"Jordan Crouse" <jordan.crouse@....com>
To:	"Andres Salomon" <dilinger@...ued.net>
cc:	linux-kernel@...r.kernel.org, info-linux@...de.amd.com,
	"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: GEODE: use symbolic constant in cs5536 reboot fixup

On 18/10/07 15:26 -0400, Andres Salomon wrote:
> Simple cosmetic update for the cs5536 reboot fixup; define the MSR that's used
> for rebooting in geode.h, and use the define.
> 
> Signed-off-by: Andres Salomon <dilinger@...ian.org>

Acked-by: Jordan Crouse <jordan.crouse@....com>

> diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
> index 8b30b26..1a07bbe 100644
> --- a/arch/x86/kernel/reboot_fixups_32.c
> +++ b/arch/x86/kernel/reboot_fixups_32.c
> @@ -12,6 +12,7 @@
>  #include <linux/interrupt.h>
>  #include <asm/reboot_fixups.h>
>  #include <asm/msr.h>
> +#include <asm/geode.h>
>  
>  static void cs5530a_warm_reset(struct pci_dev *dev)
>  {
> @@ -24,11 +25,8 @@ static void cs5530a_warm_reset(struct pci_dev *dev)
>  
>  static void cs5536_warm_reset(struct pci_dev *dev)
>  {
> -	/*
> -	 * 6.6.2.12 Soft Reset (DIVIL_SOFT_RESET)
> -	 * writing 1 to the LSB of this MSR causes a hard reset.
> -	 */
> -	wrmsrl(0x51400017, 1ULL);
> +	/* writing 1 to the LSB of this MSR causes a hard reset */
> +	wrmsrl(MSR_DIVIL_SOFT_RESET, 1ULL);
>  	udelay(50); /* shouldn't get here but be safe and spin a while */
>  }
>  
> diff --git a/include/asm-x86/geode.h b/include/asm-x86/geode.h
> index d948988..771af33 100644
> --- a/include/asm-x86/geode.h
> +++ b/include/asm-x86/geode.h
> @@ -38,6 +38,8 @@ extern int geode_get_dev_base(unsigned int dev);
>  #define MSR_LBAR_ACPI		0x5140000E
>  #define MSR_LBAR_PMS		0x5140000F
>  
> +#define MSR_DIVIL_SOFT_RESET	0x51400017
> +
>  #define MSR_PIC_YSEL_LOW	0x51400020
>  #define MSR_PIC_YSEL_HIGH	0x51400021
>  #define MSR_PIC_ZSEL_LOW	0x51400022
> 
> 

-- 
Jordan Crouse
Systems Software Development Engineer 
Advanced Micro Devices, Inc.


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