[coreboot] [PATCH] AMD MMCONF Support

Stefan Reinauer stefan.reinauer at coresystems.de
Wed May 26 13:16:51 CEST 2010


On 5/26/10 11:44 AM, Arne Georg Gleditsch wrote:
> +#define MSR_GS_BASE 0xc0000101
> +
>  #include <arch/mmio_conf.h>
>  
> +
> +static inline __attribute__((always_inline)) void set_gs_base(uint64_t base)
> +{
> +	/* Make sure %gs is a valid descriptor */
> +	__asm__ volatile (
> +		"mov %%ds, %%ax\n\tmov %%ax, %%gs" ::: "eax");
> +	/* Set base */
> +	__asm__ volatile (
> +		"wrmsr" :: "A"(base), "c"(MSR_GS_BASE));
> +}
> +
>   
This also breaks on all non-AMD platforms.

I think we should move all of this code to some AMD specific directory
(northbridge or cpu) before applying these changes.

Comments?

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