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| author | Alexander Graf <agraf@suse.de> | 2016-03-04 01:10:01 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-03-15 18:03:10 -0400 |
| commit | 50149ea37a21dcbed675297f1536c31a7db39c19 (patch) | |
| tree | d6a18d12c1306cbc1306baed0aeea5ff2f5d2ae4 /arch/arm/cpu/armv8 | |
| parent | c1311ad4e0d1759788601513fac0f65620d40472 (diff) | |
| download | blackbird-obmc-uboot-50149ea37a21dcbed675297f1536c31a7db39c19.tar.gz blackbird-obmc-uboot-50149ea37a21dcbed675297f1536c31a7db39c19.zip | |
efi_loader: Add runtime services
After booting has finished, EFI allows firmware to still interact with the OS
using the "runtime services". These callbacks live in a separate address space,
since they are available long after U-Boot has been overwritten by the OS.
This patch adds enough framework for arbitrary code inside of U-Boot to become
a runtime service with the right section attributes set. For now, we don't make
use of it yet though.
We could maybe in the future map U-boot environment variables to EFI variables
here.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/arm/cpu/armv8')
| -rw-r--r-- | arch/arm/cpu/armv8/u-boot.lds | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/u-boot.lds b/arch/arm/cpu/armv8/u-boot.lds index 4c12222370..fd15ad5963 100644 --- a/arch/arm/cpu/armv8/u-boot.lds +++ b/arch/arm/cpu/armv8/u-boot.lds @@ -42,6 +42,22 @@ SECTIONS . = ALIGN(8); + .efi_runtime : { + __efi_runtime_start = .; + *(efi_runtime_text) + *(efi_runtime_data) + __efi_runtime_stop = .; + } + + .efi_runtime_rel : { + __efi_runtime_rel_start = .; + *(.relaefi_runtime_text) + *(.relaefi_runtime_data) + __efi_runtime_rel_stop = .; + } + + . = ALIGN(8); + .image_copy_end : { *(.__image_copy_end) |
