efi_loader: fix building crt0 on arm
Before the patch an undefined constant EFI_SUBSYSTEM was used in the
crt0 code. The current version of binutils does not swallow the error.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=888403
The necessary constant IMAGE_SUBSYSTEM_EFI_APPLICATION is already
defined in pe.h. So let's factor out asm-generic/pe.h for the
image subsystem constants and use it in our assembler code.
IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER does not exist in the specification
let's use IMAGE_SUBSYSTEM_EFI_ROM instead.
The include pe.h is only used in code maintained by Alex so let him be the
maintainer here too.
Reported-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/include/asm-generic/pe.h b/include/asm-generic/pe.h
new file mode 100644
index 0000000..d1683f2
--- /dev/null
+++ b/include/asm-generic/pe.h
@@ -0,0 +1,21 @@
+/*
+ * Portable Executable and Common Object Constants
+ *
+ * Copyright (c) 2018 Heinrich Schuchardt
+ *
+ * based on the "Microsoft Portable Executable and Common Object File Format
+ * Specification", revision 11, 2017-01-23
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ASM_PE_H
+#define _ASM_PE_H
+
+/* Subsystem type */
+#define IMAGE_SUBSYSTEM_EFI_APPLICATION 10
+#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER 11
+#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12
+#define IMAGE_SUBSYSTEM_EFI_ROM 13
+
+#endif /* _ASM_PE_H */