u-boot.git/lib/efi_loader/efi_runtime.c, branch v2019.01

efi_loader: Make RTS relocation more robust

2018-12-23T03:02:20+00:00

While changing the RTS alignment to 64KB in commit 7a82c3051c8f
("efi_loader: Align runtime section to 64kb") the relocation code
started to break.

The reason for that is that we didn't actually look at the real
relocation data. We merely took the RUNTIME_CODE section as a
hint and started to relocate based on self calculated data from
that point on. That calculation was now out of sync though.

To ensure we're not running into such a situation again, this patch
makes the runtime relocation code a bit more robust. We can just
trust the phys/virt hints from the payload. We also should check that
we really only have a single section, as the code doesn't handle
multiple code relocations yet.

Fixes: 7a82c3051c8f ("efi_loader: Align runtime section to 64kb")
Reported-by: Heinrich Schuchardt 
Reported-by: Loic Devulder 
Signed-off-by: Alexander Graf 
Reviewed-by: Heinrich Schuchardt 
Tested-by: Loic Devulder 
Tested-by: Jonathan Gray 
Signed-off-by: Alexander Graf

efi_loader: SetVirtualAddressMap() should return EFI_UNSUPPORTED

2018-12-02T20:59:37+00:00

See UEFI specification 2.7, section 8.4.

Signed-off-by: AKASHI Takahiro 
Signed-off-by: Alexander Graf

efi_loader: correct a function prototype of QueryCapsuleCapabilities()

2018-12-02T20:59:37+00:00

See UEFI specification v2.7, section 8.5.3.

Signed-off-by: AKASHI Takahiro 
Signed-off-by: Alexander Graf

efi_loader: Handle RELA absolute relocations properly

2018-12-02T20:59:37+00:00

With RELA absolute relocations, the relocation target contains our link
offset which we need to remove from the equation again. We did this
properly in the relative relocation path, but not in the absolute one.

So let's do this for the absolute one as well. That way, u-boot can have
a TEXT_OFFSET of != 0 and still relocate itself properly.

This fixes a bug where efi_loader did not work on the RISC-V QEMU port.
With this patch, I can successfully run UEFI applications on the RISC-V
QEMU port.

Reported-by: Auer, Lukas 
Signed-off-by: Alexander Graf 
Tested-by: Bin Meng 
Tested-by: Lukas Auer

efi_loader: implement EFI_RESET_SHUTDOWN at boot time

2018-12-02T20:59:36+00:00

Allow an EFI application to shut down the system.

If EFI_RESET_SHUTDOWN is issued call do_poweroff().

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: fix relocation on x86_64

2018-10-16T13:29:15+00:00

Currently the relocation of the EFI runtime on x86_64 fails. This renders
the EFI subsystem unusable. The ELF relocation records for x86_64 contain
an addend field.

Always write the function name into error messages related to the EFI
runtime relocation.

Break an excessively long line.

Signed-off-by: Heinrich Schuchardt 
Reviewed-by: Bin Meng 
Tested-by: Bin Meng 
Signed-off-by: Bin Meng 
Signed-off-by: Alexander Graf

efi_loader: description efi_update_capsule()

2018-09-23T19:55:29+00:00

Correct the description of efi_update_capsule().

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: fix typos in efi_runtime.c

2018-09-23T19:55:29+00:00

Fix multiple typos

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: document runtime functions

2018-08-20T12:43:31+00:00

Add comments for runtime service functions.

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf

efi_loader: update runtime services table crc32

2018-08-20T12:43:12+00:00

The crc32 of the runtime services table must be updated after detaching.

efi_update_table_header_crc32() must be __efi_runtime. So move it to
efi_runtime.c

Signed-off-by: Heinrich Schuchardt 
Signed-off-by: Alexander Graf