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/openbmc/linux/drivers/firmware/efi/libstub/ |
H A D | arm64-stub.c | 170976bc Fri Jul 14 09:54:36 CDT 2017 Mark Rutland <mark.rutland@arm.com> efi/arm64: add EFI_KIMG_ALIGN
The EFI stub is intimately coupled with the kernel, and takes advantage of this by relocating the kernel at a weaker alignment than the documented boot protocol mandates.
However, it does so by assuming it can align the kernel to the segment alignment, and assumes that this is 64K. In subsequent patches, we'll have to consider other details to determine this de-facto alignment constraint.
This patch adds a new EFI_KIMG_ALIGN definition that will track the kernel's de-facto alignment requirements. Subsequent patches will modify this as required.
Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> 170976bc Fri Jul 14 09:54:36 CDT 2017 Mark Rutland <mark.rutland@arm.com> efi/arm64: add EFI_KIMG_ALIGN The EFI stub is intimately coupled with the kernel, and takes advantage of this by relocating the kernel at a weaker alignment than the documented boot protocol mandates. However, it does so by assuming it can align the kernel to the segment alignment, and assumes that this is 64K. In subsequent patches, we'll have to consider other details to determine this de-facto alignment constraint. This patch adds a new EFI_KIMG_ALIGN definition that will track the kernel's de-facto alignment requirements. Subsequent patches will modify this as required. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk>
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/openbmc/linux/arch/arm64/include/asm/ |
H A D | efi.h | 170976bc Fri Jul 14 09:54:36 CDT 2017 Mark Rutland <mark.rutland@arm.com> efi/arm64: add EFI_KIMG_ALIGN
The EFI stub is intimately coupled with the kernel, and takes advantage of this by relocating the kernel at a weaker alignment than the documented boot protocol mandates.
However, it does so by assuming it can align the kernel to the segment alignment, and assumes that this is 64K. In subsequent patches, we'll have to consider other details to determine this de-facto alignment constraint.
This patch adds a new EFI_KIMG_ALIGN definition that will track the kernel's de-facto alignment requirements. Subsequent patches will modify this as required.
Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> 170976bc Fri Jul 14 09:54:36 CDT 2017 Mark Rutland <mark.rutland@arm.com> efi/arm64: add EFI_KIMG_ALIGN The EFI stub is intimately coupled with the kernel, and takes advantage of this by relocating the kernel at a weaker alignment than the documented boot protocol mandates. However, it does so by assuming it can align the kernel to the segment alignment, and assumes that this is 64K. In subsequent patches, we'll have to consider other details to determine this de-facto alignment constraint. This patch adds a new EFI_KIMG_ALIGN definition that will track the kernel's de-facto alignment requirements. Subsequent patches will modify this as required. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Tested-by: Laura Abbott <labbott@redhat.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Matt Fleming <matt@codeblueprint.co.uk>
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