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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2016-04-25 22:06:53 +0200
committerIngo Molnar <mingo@kernel.org>2016-04-28 11:33:59 +0200
commit801820bee9bccb7c156af2b95c7208f428a06ae7 (patch)
treee2d486dc835f643ffa966d7b499f2ef17d3f1d7b /arch/arm/include/asm/efi.h
parentarm64/efi/libstub: Make screen_info accessible to the UEFI stub (diff)
downloadlinux-801820bee9bccb7c156af2b95c7208f428a06ae7.tar.xz
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efi/arm/libstub: Make screen_info accessible to the UEFI stub
In order to hand over the framebuffer described by the GOP protocol and discovered by the UEFI stub, make struct screen_info accessible by the stub. This involves allocating a loader data buffer and passing it to the kernel proper via a UEFI Configuration Table, since the UEFI stub executes in the context of the decompressor, and cannot access the kernel's copy of struct screen_info directly. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Borislav Petkov <bp@alien8.de> Cc: David Herrmann <dh.herrmann@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Jones <pjones@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1461614832-17633-22-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/include/asm/efi.h')
-rw-r--r--arch/arm/include/asm/efi.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index dc30d89a1ed3..25f8b1162c2e 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -64,6 +64,9 @@ void efi_virtmap_unload(void);
#define __efi_call_early(f, ...) f(__VA_ARGS__)
#define efi_is_64bit() (false)
+struct screen_info *alloc_screen_info(efi_system_table_t *sys_table_arg);
+void free_screen_info(efi_system_table_t *sys_table, struct screen_info *si);
+
/*
* A reasonable upper bound for the uncompressed kernel size is 32 MBytes,
* so we will reserve that amount of memory. We have no easy way to tell what