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efi: stub: implement efi_get_random_bytes() based on EFI_RNG_PROTOCOL

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This exposes the firmware's implementation of EFI_RNG_PROTOCOL via a new
function efi_get_random_bytes().

Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Ard Biesheuvel
2016-01-10 11:29:07 +01:00
committed by Catalin Marinas
parent c031a4213c
commit e4fbf47674
4 changed files with 44 additions and 2 deletions
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3
drivers/firmware/efi/libstub/efistub.h
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@@ -43,4 +43,7 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
unsigned long desc_size, efi_memory_desc_t *runtime_map,
int *count);
efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table,
unsigned long size, u8 *out);
#endif