diff options
Diffstat (limited to 'lib/efi_loader/efi_boottime.c')
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 02bc9fdcf0..965eb1f0c5 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1371,6 +1371,7 @@ static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, { ulong (*entry)(void *image_handle, struct efi_system_table *st); struct efi_loaded_image *info = image_handle; + efi_status_t ret; EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); entry = info->reserved; @@ -1379,18 +1380,37 @@ static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, /* call the image! */ if (setjmp(&info->exit_jmp)) { - /* We returned from the child image */ + /* + * We called the entry point of the child image with EFI_CALL + * in the lines below. The child image called the Exit() boot + * service efi_exit() which executed the long jump that brought + * us to the current line. This implies that the second half + * of the EFI_CALL macro has not been executed. + */ +#ifdef CONFIG_ARM + /* + * efi_exit() called efi_restore_gd(). We have to undo this + * otherwise __efi_entry_check() will put the wrong value into + * app_gd. + */ + gd = app_gd; +#endif + /* + * To get ready to call EFI_EXIT below we have to execute the + * missed out steps of EFI_CALL. + */ + assert(__efi_entry_check()); + debug("%sEFI: %lu returned by started image\n", + __efi_nesting_dec(), + (unsigned long)((uintptr_t)info->exit_status & + ~EFI_ERROR_MASK)); return EFI_EXIT(info->exit_status); } - __efi_nesting_dec(); - __efi_exit_check(); - entry(image_handle, &systab); - __efi_entry_check(); - __efi_nesting_inc(); + ret = EFI_CALL(entry(image_handle, &systab)); /* Should usually never get here */ - return EFI_EXIT(EFI_SUCCESS); + return EFI_EXIT(ret); } /* @@ -1427,7 +1447,7 @@ static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, exit_data_size, exit_data); /* Make sure entry/exit counts for EFI world cross-overs match */ - __efi_exit_check(); + EFI_EXIT(exit_status); /* * But longjmp out with the U-Boot gd, not the application's, as |