u-boot.git/lib/efi_loader/efi_runtime.c, branch v2016.07

efi_loader: Move to normal debug infrastructure

2016-06-06T17:39:16+00:00

We introduced special "DEBUG_EFI" defines when the efi loader
support was new. After giving it a bit of thought, turns out
we really didn't have to - the normal #define DEBUG infrastructure
works well enough for efi loader as well.

So this patch switches to the common debug() and #define DEBUG
way of printing debug information.

Signed-off-by: Alexander Graf

efi_loader: Clean up system table on exit

2016-05-27T19:39:56+00:00

We put the system table into our runtime services data section so that
payloads may still access it after exit_boot_services. However, most fields
in it are quite useless once we're in that state, so let's just patch them
out.

With this patch we don't get spurious warnings when running EFI binaries
anymore.

Signed-off-by: Alexander Graf

efi_loader: Always flush in cache line size granularity

2016-04-18T21:11:39+00:00

The cache line flush helpers only work properly when they get aligned
start and end addresses. Round our flush range to cache line size. It's
safe because we're guaranteed to flush within a single page which has the
same cache attributes.

Reported-by: Marek Vasut 
Signed-off-by: Alexander Graf 
Reviewed-by: Andreas Färber 
Tested-by: Andreas Färber

efi_loader: Add runtime services

2016-03-15T22:03:10+00:00

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 
Reviewed-by: Simon Glass 
Tested-by: Simon Glass