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efi_loader: implement support of exit data

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In case of a failure exit data may be passed to Exit() which in turn is
returned by StartImage().

Let the `bootefi` command print the exit data string in case of an error.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt
2019-04-30 17:57:30 +02:00
parent 45203e0ccb
commit 556d8dc937
3 changed files with 60 additions and 3 deletions
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5
include/efi_loader.h
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@@ -207,12 +207,17 @@ struct efi_object {
* struct efi_loaded_image_obj - handle of a loaded image
*
* @header: EFI object header
* @exit_status: exit status passed to Exit()
* @exit_data_size: exit data size passed to Exit()
* @exit_data: exit data passed to Exit()
* @exit_jmp: long jump buffer for returning form started image
* @entry: entry address of the relocated image
*/
struct efi_loaded_image_obj {
struct efi_object header;
efi_status_t exit_status;
efi_uintn_t *exit_data_size;
u16 **exit_data;
struct jmp_buf_data exit_jmp;
EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
struct efi_system_table *st);