On Mon, Dec 10, 2012 at 08:58:35AM +0900, Boojin Kim wrote:
>
> -3: mov r10, #0
> + /* Cortex-A15 Errata */
> +3: ldr r10, =0x00000c0f @ Cortex-A15 primary part number
> + teq r0, r10
> + bne 4f
> +#ifdef CONFIG_ARM_ERRATA_774769
There's not much point testing for the part number of the work-around isn't
enabled.
> + teq r6, #0x4 @ present in r0p4
> + mrceq p15, 0, r10, c1, c0, 1 @ read aux control register
tsteq r10, #1 << 15
to avoid writing to the aux control register if the errata has already been
applied.
> + orreq r10, r10, #1 << 25 @ set bit #25
> + mcreq p15, 0, r10, c1, c0, 1 @ write aux control register
> +#endif
> +
> +4: mov r10, #0
> mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate
> dsb
> #ifdef CONFIG_MMU
> --
> 1.7.5.4
>
>
>
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