[U-Boot] [PATCH 4/6] ARMv8: Setup PSCI memory and dt

[york sun]

On 09/27/2016 02:29 AM, 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>
> ---
>  arch/arm/cpu/armv8/cpu-dt.c   | 10 ++++++++++
>  arch/arm/cpu/armv8/cpu.c      | 22 ++++++++++++++++++++++
>  arch/arm/include/asm/secure.h |  2 +-
>  arch/arm/include/asm/system.h | 11 +++++++++++
>  arch/arm/lib/bootm-fdt.c      |  3 ++-
>  arch/arm/lib/bootm.c          |  3 +++
>  arch/arm/lib/psci-dt.c        |  5 +++--
>  7 files changed, 52 insertions(+), 4 deletions(-)
>
> 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

Is this backward?

> +	/* 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;
>  }


York