[U-Boot] [PATCH 2/9] ARM: HYP/non-sec: move switch to non-sec to the last boot phase

[Andre Przywara]

On 11/21/2013 09:59 AM, Marc Zyngier wrote:
> Having the switch to non-secure in the "prep" phase is causing
> all kind of troubles, as that stage can be called multiple times.
>
> Instead, move the switch to non-secure to the last possible phase,
> when there is no turning back anymore.

Tested on Versatile Express TC2.

Albert, Tom: please apply for v2014.01.

Acked-by: Andre Przywara <andre.przywara at linaro.org>

>
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
> ---
>   arch/arm/lib/bootm.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
> index f476a89..f3da634 100644
> --- a/arch/arm/lib/bootm.c
> +++ b/arch/arm/lib/bootm.c
> @@ -234,7 +234,6 @@ static void boot_prep_linux(bootm_headers_t *images)
>   		printf("FDT and ATAGS support not compiled in - hanging\n");
>   		hang();
>   	}
> -	do_nonsec_virt_switch();
>   }
>
>   /* Subcommand: GO */
> @@ -264,8 +263,10 @@ static void boot_jump_linux(bootm_headers_t *images, int flag)
>   	else
>   		r2 = gd->bd->bi_boot_params;
>
> -	if (!fake)
> +	if (!fake) {
> +		do_nonsec_virt_switch();
>   		kernel_entry(0, machid, r2);
> +	}
>   }
>
>   /* Main Entry point for arm bootm implementation
>