[U-Boot] [PATCH v2 5/6] ARMv8: Setup PSCI memory and dt

Tom Rini trini at konsulko.com
Wed Nov 2 15:27:41 CET 2016


On Tue, Nov 01, 2016 at 06:04:31PM +0800, macro.wave.z at gmail.com wrote:
> From: Hongbo Zhang <hongbo.zhang at nxp.com>
> 
> Newly add ARMv8 PSCI needs to be initialized, be copied or reserved in right
> place, this patch does all the setup steps.
> 
> Signed-off-by: Hongbo Zhang <hongbo.zhang at nxp.com>
[snip]
> diff --git a/arch/arm/cpu/armv8/cpu-dt.c b/arch/arm/cpu/armv8/cpu-dt.c
> index 659ec27..753e21f 100644
> --- a/arch/arm/cpu/armv8/cpu-dt.c
> +++ b/arch/arm/cpu/armv8/cpu-dt.c
> @@ -6,6 +6,7 @@
>  
>  #include <common.h>
>  #include <asm/psci.h>
> +#include <asm/system.h>
>  #ifdef CONFIG_ARMV8_SEC_FIRMWARE_SUPPORT
>  #include <asm/armv8/sec_firmware.h>
>  #endif
> @@ -27,5 +28,14 @@ int psci_update_dt(void *fdt)
>  	fdt_psci(fdt);
>  #endif
>  #endif
> +
> +#ifdef CONFIG_ARMV8_PSCI
> +	fdt_psci(fdt);
> +#ifndef CONFIG_ARMV8_SECURE_BASE
> +	/* secure code lives in RAM, keep it alive */
> +	fdt_add_mem_rsv(fdt, (unsigned long)__secure_start,
> +			__secure_end - __secure_start);
> +#endif
> +#endif
>  	return 0;

Looking just above this context, I think we need to re-work the #if
tests now when adding this in.

-- 
Tom
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