On 13 April 2017 at 04:58, Gary Lin <glin@xxxxxxxx> wrote: > 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 > Thanks for the update. Could we put the Kconfig changes in drivers/firmware/efi/Kconfig, rather than duplicating them 3 times? > 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
