Similar to a "real" UEFI implementation, the bootmgr looks at the
BootOrder and BootXXXX variables to try to find an EFI payload to load
and boot. This is added as a sub-command of bootefi.
The idea is that the distro bootcmd would first try loading a payload
via the bootmgr, and then if that fails (ie. first boot or corrupted
EFI variables) it would fallback to loading bootaa64.efi. (Which
would then load fallback.efi which would look for \EFI\*\boot.csv and
populate BootOrder and BootXXXX based on what it found.)
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
fallback.efi (and probably other things) use UEFI's simple-file-system
protocol and file support to search for OS's to boot.
Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: whitespace fixes, unsigned fixes]
Signed-off-by: Alexander Graf <agraf@suse.de>
efi_open_protocol was implemented to call a protocol specific open
function to retrieve the protocol interface.
The UEFI specification does not know of such a function.
It is not possible to implement InstallProtocolInterface with the
current design.
With the patch the protocol interface itself is stored in the list
of installed protocols of an efi_object instead of an open function.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: fix efi gop support]
Signed-off-by: Alexander Graf <agraf@suse.de>
If a relocation type is not supported loading the EFI binary
should be aborted.
Writing a message only is insufficient.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: use a() != b coding style]
Signed-off-by: Alexander Graf <agraf@suse.de>
Make sure that the cache flushes correctly by ensuring that the end
address is correctly aligned.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
We were truncating the image offset within the target image to 16 bits
which again meant that we were potentially overwriting random memory
in the lower 16 bits of the image.
This patch casts the offset to a more reasonable 32bits.
With this applied, I can successfully see Shell.efi assert because it
can't find a protocol it expects to be available.
Signed-off-by: Alexander Graf <agraf@suse.de>
When switching between EFI context and U-Boot context we need to swap
the register that "gd" resides in.
Some functions slipped through here, with efi_allocate_pool / efi_free_pool
not doing the switch correctly and efi_return_handle switching too often.
Fix them all up to make sure we always have consistent register state.
Signed-off-by: Alexander Graf <agraf@suse.de>
EFI uses the PE binary format for its application images. Add support to EFI PE
binaries as well as all necessary bits for the "EFI image loader" interfaces.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
