To understand what happens in OpenProtocol it is necessary to know the protocol interface GUID. Let's write a debug message.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- v2: fix typo in commit message --- include/efi_loader.h | 14 ++++++++++++++ lib/efi_loader/efi_boottime.c | 2 ++ 2 files changed, 16 insertions(+)
diff --git a/include/efi_loader.h b/include/efi_loader.h index 037cc7c543..553c615f11 100644 --- a/include/efi_loader.h +++ b/include/efi_loader.h @@ -51,6 +51,20 @@ const char *__efi_nesting_dec(void); debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ } while(0)
+/* + * Write GUID + */ +#define EFI_PRINT_GUID(txt, guid) ({ \ + debug("EFI: %s %02x%02x%02x%02x-%02x%02x-%02x%02x-" \ + "%02x%02x%02x%02x%02x%02x%02x%02x\n", \ + txt, ((u8 *)guid)[3], \ + ((u8 *)guid)[2], ((u8 *)guid)[1], ((u8 *)guid)[0], \ + ((u8 *)guid)[5], ((u8 *)guid)[4], ((u8 *)guid)[7], \ + ((u8 *)guid)[6], ((u8 *)guid)[8], ((u8 *)guid)[9], \ + ((u8 *)guid)[10], ((u8 *)guid)[11], ((u8 *)guid)[12], \ + ((u8 *)guid)[13], ((u8 *)guid)[14], ((u8 *)guid)[15]); \ + }) + extern struct efi_runtime_services efi_runtime_services; extern struct efi_system_table systab;
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index fb05c9e093..ebb557abb2 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1138,6 +1138,8 @@ static efi_status_t EFIAPI efi_open_protocol( goto out; }
+ EFI_PRINT_GUID("protocol:", protocol); + switch (attributes) { case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL: case EFI_OPEN_PROTOCOL_GET_PROTOCOL: