[PATCH v2] efi: Config options to assign versions in the PE-COFF header

[Gary Lin]

This commit adds the new config options to allow the user to modify the
following fields in the PE-COFF header.

UINT16 MajorOperatingSystemVersion
UINT16 MinorOperatingSystemVersion
UINT16 MajorImageVersion
UINT16 MinorImageVersion

Those fields are mainly for the executables or libraries in Windows NT
or higher to specify the minimum supported Windows version and the
version of the image itself.

Given the fact that those fields are ignored in UEFI, we can safely reuse
those fields for other purposes, e.g. Security Version(*).

(*) https://github.com/lcp/shim/wiki/Security-Version

v2 changes:
- Modify the header direct instead of using an external script as
  suggested by Ard Biesheuvel
- Include arm and arm64

Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Joey Lee <jlee@xxxxxxxx>
Cc: Vojtech Pavlik <vojtech@xxxxxxx>
Signed-off-by: Gary Lin <glin@xxxxxxxx>
---
 arch/arm/Kconfig                      | 24 ++++++++++++++++++++++++
 arch/arm/boot/compressed/efi-header.S |  8 ++++----
 arch/arm64/Kconfig                    | 24 ++++++++++++++++++++++++
 arch/arm64/kernel/head.S              |  8 ++++----
 arch/x86/Kconfig                      | 24 ++++++++++++++++++++++++
 arch/x86/boot/header.S                |  8 ++++----
 6 files changed, 84 insertions(+), 12 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0d4e71b42c77..4965ad2ccc23 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2090,6 +2090,30 @@ config EFI
 	  is only useful for kernels that may run on systems that have
 	  UEFI firmware.
 
+config EFI_MAJOR_OS
+	hex "EFI Major OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_OS
+	hex "EFI Minor OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MAJOR_IMAGE
+	hex "EFI Major Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_IMAGE
+	hex "EFI Minor Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
 endmenu
 
 menu "CPU Power Management"
diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S
index 9d5dc4fda3c1..67715472a76f 100644
--- a/arch/arm/boot/compressed/efi-header.S
+++ b/arch/arm/boot/compressed/efi-header.S
@@ -69,10 +69,10 @@ extra_header_fields:
 		.long	0			@ ImageBase
 		.long	0x200			@ SectionAlignment
 		.long	0x200			@ FileAlignment
-		.short	0			@ MajorOperatingSystemVersion
-		.short	0			@ MinorOperatingSystemVersion
-		.short	0			@ MajorImageVersion
-		.short	0			@ MinorImageVersion
+		.short	CONFIG_EFI_MAJOR_OS	@ MajorOperatingSystemVersion
+		.short	CONFIG_EFI_MINOR_OS	@ MinorOperatingSystemVersion
+		.short	CONFIG_EFI_MAJOR_IMAGE	@ MajorImageVersion
+		.short	CONFIG_EFI_MINOR_IMAGE	@ MinorImageVersion
 		.short	0			@ MajorSubsystemVersion
 		.short	0			@ MinorSubsystemVersion
 		.long	0			@ Win32VersionValue
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3741859765cf..c782c422e58c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1033,6 +1033,30 @@ config EFI
 	  allow the kernel to be booted as an EFI application. This
 	  is only useful on systems that have UEFI firmware.
 
+config EFI_MAJOR_OS
+	hex "EFI Major OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_OS
+	hex "EFI Minor OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MAJOR_IMAGE
+	hex "EFI Major Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_IMAGE
+	hex "EFI Minor Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
 config DMI
 	bool "Enable support for SMBIOS (DMI) tables"
 	depends on EFI
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S
index 4fb6ccd886d1..9faa4b04d0ef 100644
--- a/arch/arm64/kernel/head.S
+++ b/arch/arm64/kernel/head.S
@@ -129,10 +129,10 @@ extra_header_fields:
 	.quad	0				// ImageBase
 	.long	0x1000				// SectionAlignment
 	.long	PECOFF_FILE_ALIGNMENT		// FileAlignment
-	.short	0				// MajorOperatingSystemVersion
-	.short	0				// MinorOperatingSystemVersion
-	.short	0				// MajorImageVersion
-	.short	0				// MinorImageVersion
+	.short	CONFIG_EFI_MAJOR_OS		// MajorOperatingSystemVersion
+	.short	CONFIG_EFI_MINOR_OS		// MinorOperatingSystemVersion
+	.short	CONFIG_EFI_MAJOR_IMAGE		// MajorImageVersion
+	.short	CONFIG_EFI_MINOR_IMAGE		// MinorImageVersion
 	.short	0				// MajorSubsystemVersion
 	.short	0				// MinorSubsystemVersion
 	.long	0				// Win32VersionValue
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5bbdef151805..233933fde7dd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1803,6 +1803,30 @@ config EFI_STUB
 
 	  See Documentation/efi-stub.txt for more information.
 
+config EFI_MAJOR_OS
+	hex "EFI Major OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_OS
+	hex "EFI Minor OS Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MAJOR_IMAGE
+	hex "EFI Major Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
+config EFI_MINOR_IMAGE
+	hex "EFI Minor Image Version"
+	range 0x0 0xFFFF
+	default "0x0"
+	depends on EFI_STUB
+
 config EFI_MIXED
 	bool "EFI mixed-mode support"
 	depends on EFI_STUB && X86_64
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 3dd5be33aaa7..863813007207 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -156,10 +156,10 @@ extra_header_fields:
 #endif
 	.long	0x20				# SectionAlignment
 	.long	0x20				# FileAlignment
-	.word	0				# MajorOperatingSystemVersion
-	.word	0				# MinorOperatingSystemVersion
-	.word	0				# MajorImageVersion
-	.word	0				# MinorImageVersion
+	.word	CONFIG_EFI_MAJOR_OS		# MajorOperatingSystemVersion
+	.word	CONFIG_EFI_MINOR_OS		# MinorOperatingSystemVersion
+	.word	CONFIG_EFI_MAJOR_IMAGE		# MajorImageVersion
+	.word	CONFIG_EFI_MINOR_IMAGE		# MinorImageVersion
 	.word	0				# MajorSubsystemVersion
 	.word	0				# MinorSubsystemVersion
 	.long	0				# Win32VersionValue
-- 
2.12.0