efi_loader: add option to initialise EFI subsystem early

If this option, CONFIG_EFI_SETUP_EARLY, is enabled, the initialisation
of UEFI subsystem will be done as part of U-Boot initialisation.

Please note that this option won't be enabled explicitly by users,
instead, should be enabled implicitly by other configuration options.

Specifically, this feature will be utilised in implementing capsule-on-disk
feature.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/common/board_r.c b/common/board_r.c
index b9217b2..2212d98 100644 (file)
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -73,6 +73,9 @@
 #if defined(CONFIG_GPIO_HOG)
 #include <asm/gpio.h>
 #endif
+#ifdef CONFIG_EFI_SETUP_EARLY
+#include <efi_loader.h>
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -890,6 +893,9 @@ static init_fnc_t init_sequence_r[] = {
 #if defined(CONFIG_PRAM)
        initr_mem,
 #endif
+#ifdef CONFIG_EFI_SETUP_EARLY
+       (init_fnc_t)efi_init_obj_list,
+#endif
        run_main_loop,
 };
 

diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index ab42f3b..0754814 100644 (file)
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -27,6 +27,10 @@ config EFI_LOADER
 
 if EFI_LOADER
 
+config EFI_SETUP_EARLY
+       bool
+       default n
+
 choice
        prompt "Store for non-volatile UEFI variables"
        default EFI_VARIABLE_FILE_STORE