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efi_loader: rework bootmgr/bootefi using load_image API

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In the current implementation, bootefi command and EFI boot manager
don't use load_image API, instead, use more primitive and internal
functions. This will introduce duplicated code and potentially
unknown bugs as well as inconsistent behaviours.

With this patch, do_efibootmgr() and do_boot_efi() are completely
overhauled and re-implemented using load_image API.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

Use efi_root as parent handle for the loaded image.
LoadImage() should be called with BootPolicy = true by the boot manager.
Avoid duplicate free_pool().
Eliminate variable memdp which is not needed after anymore due to
"efi_loader: correctly split device path of loaded image".

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
AKASHI Takahiro
2019-04-19 12:22:35 +09:00
committed by Heinrich Schuchardt
parent 1e15a9cb7f
commit 6b95b38c41
4 changed files with 119 additions and 110 deletions
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2
lib/efi_loader/efi_boottime.c
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@@ -1591,6 +1591,7 @@ failure:
* @size: size of the loaded image
* Return: status code
*/
static
efi_status_t efi_load_image_from_path(struct efi_device_path *file_path,
void **buffer, efi_uintn_t *size)
{
@@ -2656,6 +2657,7 @@ efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
}
current_image = image_handle;
EFI_PRINT("Jumping into 0x%p\n", image_obj->entry);
ret = EFI_CALL(image_obj->entry(image_handle, &systab));
/*