[U-Boot] [PATCH] ARM: HYP/non-sec: relocation before enable secondary cores

[Marc Zyngier]

On 04/02/15 10:15, Peng Fan wrote:
> If CONFIG_ARMV7_PSCI is not defined and CONFIG_ARMV7_SECURE_BASE is defined,
> smp_kicl_all_cpus may enable secondary cores and runs into secure_ram_addr(
> _smp_pen), before code is relocated to secure ram.
> So need relocation to secure ram before enable secondary cores.
> 
> Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
> ---
>  arch/arm/cpu/armv7/virt-v7.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/cpu/armv7/virt-v7.c b/arch/arm/cpu/armv7/virt-v7.c
> index b69fd37..4cb8806 100644
> --- a/arch/arm/cpu/armv7/virt-v7.c
> +++ b/arch/arm/cpu/armv7/virt-v7.c
> @@ -112,13 +112,20 @@ int armv7_init_nonsec(void)
>  	for (i = 1; i <= itlinesnr; i++)
>  		writel((unsigned)-1, gic_dist_addr + GICD_IGROUPRn + 4 * i);
>  
> +	/*
> +	 * Relocate secure section before any cpu runs in secure ram.
> +	 * smp_kick_all_cpus may enable other cores and runs into secure
> +	 * ram, so need to relocate secure section before enabling other
> +	 * cores.
> +	 */
> +	relocate_secure_section();
> +
>  #ifndef CONFIG_ARMV7_PSCI
>  	smp_set_core_boot_addr((unsigned long)secure_ram_addr(_smp_pen), -1);
>  	smp_kick_all_cpus();
>  #endif
>  
>  	/* call the non-sec switching code on this CPU also */
> -	relocate_secure_section();
>  	secure_ram_addr(_nonsec_init)();
>  	return 0;
>  }
> 

Seems like a sensible thing to do. FWIW:

Acked-by: Marc Zyngier <marc.zyngier at arm.com>

	M.
-- 
Jazz is not dead. It just smells funny...