[U-Boot] [PATCH v4 8/9] efi_loader: Declare secure memory as reserved

[york sun]

On 06/20/2016 04:07 PM, Alexander Graf wrote:
> Some systems may implemente TrustZone (EL3) in U-Boot. Those systems
> reserve some memory that U-Boot is aware of as secure.
>
> For those systems, mask out that secure memory in the EFI memory map,
> as it's not usable from EL2 or EL1.
>
> Signed-off-by: Alexander Graf <agraf at suse.de>
> ---
>  lib/efi_loader/efi_memory.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c
> index df2381e..6e2eeeb 100644
> --- a/lib/efi_loader/efi_memory.c
> +++ b/lib/efi_loader/efi_memory.c
> @@ -398,5 +398,20 @@ int efi_memory_init(void)
>  	efi_bounce_buffer = (void*)(uintptr_t)efi_bounce_buffer_addr;
>  #endif
>
> +#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
> +	/* Declare secure ram as reserved */
> +        if (gd->secure_ram & MEM_RESERVE_SECURE_SECURED) {

This variable has been moved to gd->arch.secure_ram in recent commit.

York