Commit graph

218 commits

Author SHA1 Message Date
Heinrich Schuchardt
cd534083cd efi_loader: eliminate efi_uninstall_protocol_interface_ext
As we now have EFI_CALL there is no need for separate
functions efi_uninstall_protocol_interface_ext and
efi_uninstall_protocol_interface.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Heinrich Schuchardt
1760ef574a efi_loader: eliminate efi_install_protocol_interface_ext
As we now have EFI_CALL there is no need for separate
functions efi_install_protocol_interface_ext and
efi_install_protocol_interface.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Heinrich Schuchardt
9f0770ff9c efi_loader: capitalize EFI_LOCATE_SEARCH_TYPE values
Constants should be capitalized.
So rename the values of enum efi_locate_search_type.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Heinrich Schuchardt
32fc2ac381 efi_loader: set parent handle in efi_load_image
The parent_handle of the loaded image must be set.
Set the system table.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Heinrich Schuchardt
b3d6090042 efi_loader: implement SetWatchdogTimer
The watchdog is initialized with a 5 minute timeout period.
It can be reset by SetWatchdogTimer.
It is stopped by ExitBoottimeServices.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Heinrich Schuchardt
7b9f8ad749 efi_loader: move efi_search_obj up in code
To avoid a forward declaration move efi_search_obj before
all protocol services functions.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-01 13:22:55 +01:00
Alexander Graf
405835645a efi_loader: Disable env_save() call on boot
With the introduction of EFI variable support, we also wanted to persist
these EFI variables. However, the way it was implemented we ended up
persisting all U-Boot environment variables on every EFI boot.

That could potentially lead to unexpected side effects because variables
that were not supposed to be written to persisted env get written. It also
means we may end up writing the environment more often than we should.

For this release, let's just disable EFI variable persistence and instead
implement it properly for the next one.

Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Fixes: ad644e7c18 ("efi_loader: efi variable support")
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2017-10-29 07:59:08 -04:00
Rob Clark
2d5dc2a52d efi_loader: console support for color attributes
Shell.efi uses this, and supporting color attributes makes things look
nicer.  Map the EFI fg/bg color attributes to ANSI escape sequences.
Not all colors have a perfect match, but spec just says "Devices
supporting a different number of text colors are required to emulate the
above colors to the best of the device’s capabilities".

Signed-off-by: Rob Clark <robdclark@gmail.com>
Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Alexander Graf <agraf@suse.de>
[agraf: s/unsigned/unsigned int/]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-12 17:24:25 +02:00
Rob Clark
bf19273e81 efi_loader: Add mem-mapped for fallback
When we don't have a real device/image path, such as 'bootefi hello',
construct a mem-mapped device-path.

This fixes 'bootefi hello' after devicepath refactoring.

Fixes: 95c5553ea2 ("efi_loader: refactor boot device and loaded_image handling")
Signed-off-by: Rob Clark <robdclark@gmail.com>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-12 17:22:58 +02:00
Jonathan Gray
bcbc4a8046 efi_loader: don't increment part twice per loop
Correct a mistake in the part number handling of commit
16a73b249d and only increment part once
per loop.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-10 18:14:05 +02:00
Jonathan Gray
16a73b249d efi_loader: search all possible disk partitions
When searching for partitions don't stop if a partition is not present
for a given partition number as there may be valid partitions after.

Search for up to MAX_SEARCH_PARTITIONS matching the other callers of
part_get_info().

This allows OpenBSD to boot via the efi_loader on rpi_3 again after
changes made after U-Boot 2017.09.  With MBR partitioning OpenBSD will
by default use the fourth partition for the 0xA6 (OpenBSD) partition.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-10 09:56:04 +02:00
Heinrich Schuchardt
10a08c4ed7 efi_loader: comments for functions add missing @return
For some functions the @return description is missing.

Fix typo.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:38 +02:00
Rob Clark
77511b3b4b efi_loader: Fix disk dp's for pre-DM/legacy devices
This fixes an issue with OpenBSD's bootloader, and I think should also
fix a similar issue with grub2 on legacy devices.  In the legacy case
we were creating disk objects for the partitions, but not also the
parent device.

Reported-by: Jonathan Gray <jsg@jsg.id.au>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:38 +02:00
Heinrich Schuchardt
1a2c8d2f60 efi_loader: avoid NULL dereference in efi_dp_match
When calling bootefi hello twice a kernel dump occurs.

Neither bootefi hello nor bootefi selftest have an image
device patch. So do not try to dereference the NULL
value.

Fixes: 95c5553ea2 efi_loader: refactor boot device and loaded_image handling
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:37 +02:00
Heinrich Schuchardt
336d9dfc0a efi_loader: fill return values in SimpleNetworkProtocol
In the receive function all return values should be filled.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:35 +02:00
Heinrich Schuchardt
8db174d651 efi_loader: size fields in SimpleNetworkProtocol
The size fields in the Simple Network Protocol are all
UINTN in the UEFI spec. So use size_t.

Provide a function description of the receive function.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:34 +02:00
Heinrich Schuchardt
891b3d9051 efi_loader: fix efi_net_get_status
The returned interrupt status was wrong.

As out transmit buffer is empty we need to always set
EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT.

When we have received a packet we need to set
EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT.

Furthermore we should call efi_timer_check() to handle events.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:34 +02:00
Heinrich Schuchardt
e5c21603fc efi_loader: implement WaitForPacket event
The WaitForPacket event informs that a network package has been
received by the SimpleNetworkProtocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: Move is_signaled = true line into efi_net_push()]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:33 +02:00
Heinrich Schuchardt
a0549ef607 efi_loader: use events for efi_net_receive
A timer event is defined. The timer handler cares for receiving new
packets.

efi_timer_check is called both in efi_net_transmit and efi_net_receive
to enable events during network communication.

Calling efi_timer_check in efi_net_get_status is implemented in a
separate patch.

[agraf] This patch is needed to make efi_net_get_status() actually
        report incoming packets.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: fix spelling in comment]
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:33 +02:00
Heinrich Schuchardt
61da678c39 efi_net: return EFI_UNSUPPORTED where appropriate
U-Boot does not implement all functions of the simple network
protocol. The unimplemented functions return either of
EFI_SUCCESS and EFI_INVALID_PARAMETER.

The UEFI spec foresees to return EFI_UNSUPPORTED in these cases.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:32 +02:00
Heinrich Schuchardt
5d4a5ea964 efi_loader: efi_net: hwaddr_size = 6
The length of a MAC address is 6.
We have to set this length in the EFI_SIMPLE_NETWORK_MODE
structure of the EFI_SIMPLE_NETWORK_PROTOCOL.

Without this patch iPXE fails to initialize the network with
error message
SNP MAC(001e0633bcbf,0x0) has invalid hardware address length 0

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:32 +02:00
Heinrich Schuchardt
bdecf974f1 efi_loader: fill simple network protocol revision
Provide the simple network protocol revision.
This revision number could be used to identify backwards compatible
enhancements of the protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:32 +02:00
Heinrich Schuchardt
ca379e1bf1 efi_loader: wrong type in wait_for_event
The UEFI spec defines parameter index of WaitForEvent as UINTN*.
So we should use size_t here.

I deliberately do not use UINTN because I hold a following patch
that will eliminate UINTN because uppercase types to not match
the U-Boot coding style.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:30 +02:00
Heinrich Schuchardt
5a9682d0dd efi_loader: pass GUIDs as const efi_guid_t *
We need to call some boottime services internally.
Our GUIDs are stored as const efi_guid_t *.

The boottime services never change GUIDs.
So we can define the parameters as const efi_guid_t *.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:30 +02:00
Heinrich Schuchardt
fc05a95906 efi_loader: parameters of CopyMem and SetMem
The UEFI spec defines the length parameters of CopyMem and SetMem
as UINTN. We should size_t here.

The source buffer of CopyMem should be marked as const.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:29 +02:00
Heinrich Schuchardt
f7c78176d6 efi_loader: call EFI_EXIT in efi_copy_mem, efi_set_mem
EFI_ENTRY and EFI_EXIT calls must match.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:29 +02:00
Heinrich Schuchardt
7d963323a2 efi_loader: replace efi_div10 by do_div
We should use the existing 64bit division instead of
reinventing the wheel.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:29 +02:00
Heinrich Schuchardt
332468f7fc efi_loader: provide function comments for boot services
Provide comments describing the boot service functions.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 07:00:28 +02:00
Heinrich Schuchardt
e190e8972f efi_loader: use type bool for event states
Queued and signaled describe boolean states of events.
So let's use type bool and rename the structure members to is_queued
and is_signaled.

Update the comments for is_queued and is_signaled.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-09 06:59:38 +02:00
Heinrich Schuchardt
3cc6e3fe95 efi_loader: allow creating new handles
In efi_install_protocol_interface support creating
a new handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-05 14:46:57 +02:00
Rob Clark
3a45bc7faa efi_loader: Some console improvements for vidconsole
1) use fputs() to reduce cache flushes from once-per-char to
   once-per-string
2) handle \r, \t, and \b in addition to just \n for tracking
   cursor position
3) cursor row/col are zero based, not one based

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: s/unsigned/unsigned int/]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:29:35 +02:00
Rob Clark
a18c5a8382 efi_loader: Correctly figure out size for vidconsole
If stdout is vidconsole, we cannot rely on ANSI escape sequences to
query the size, as vidconsole cannot reply on stdin.  Instead special-
case this if stdout is vidconsole.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:28:39 +02:00
Rob Clark
71cc25c35c efi_loader: split out escape sequence based size query
We need to do something different for vidconsole, since it cannot
respond to the query on stdin.  Prep work for next patch.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:14:12 +02:00
Rob Clark
778e6af8a6 efi_loader: print GUIDs
Utilize printf GUID support to print GUIDs.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:10:42 +02:00
Rob Clark
4657a3f1ac efi_loader: set loaded image code/data type properly
These should be set according to the image type.  Shell.efi and SCT.efi
use these fields to determine what sort of image they are loading.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:10:24 +02:00
Rob Clark
9975fe96b6 efi_loader: add bootmgr
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>
2017-09-20 11:08:01 +02:00
Rob Clark
ad644e7c18 efi_loader: efi variable support
Add EFI variable support, mapping to u-boot environment variables.
Variables are pretty important for setting up boot order, among other
things.  If the board supports saveenv, then it will be called in
ExitBootServices() to persist variables set by the efi payload.  (For
example, fallback.efi configuring BootOrder and BootXXXX load-option
variables.)

Variables are *not* currently exposed at runtime, post ExitBootServices.
On boards without a dedicated device for storage, which the loaded OS
is not trying to also use, this is rather tricky.  One idea, at least
for boards that can persist RAM across reboot, is to keep a "journal"
of modified variables in RAM, and then turn halt into a reboot into
u-boot, plus store variables, plus halt.  Whatever the solution, it
likely involves some per-board support.

Mapping between EFI variables and u-boot variables:

  efi_$guid_$varname = {attributes}(type)value

For example:

  efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_OsIndicationsSupported=
     "{ro,boot,run}(blob)0000000000000000"
  efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_BootOrder=
     "(blob)00010000"

The attributes are a comma separated list of these possible
attributes:

  + ro   - read-only
  + boot - boot-services access
  + run  - runtime access

NOTE: with current implementation, no variables are available after
ExitBootServices, and all are persisted (if possible).

If not specified, the attributes default to "{boot}".

The required type is one of:

  + utf8 - raw utf8 string
  + blob - arbitrary length hex string

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 11:00:57 +02:00
Rob Clark
946160f334 efi_loader: make pool allocations cacheline aligned
This avoids printf() spam about file reads (such as loading an image)
into unaligned buffers (and the associated memcpy()).  And generally
seems like a good idea.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: use __aligned]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:48:09 +02:00
Rob Clark
838ee4b479 efi_loader: support load_image() from a file-path
Previously we only supported the case when the EFI application loaded
the image into memory for us.  But fallback.efi does not do this.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:45:28 +02:00
Rob Clark
2a92080d8c efi_loader: add file/filesys support
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>
2017-09-20 10:43:54 +02:00
Rob Clark
95c5553ea2 efi_loader: refactor boot device and loaded_image handling
Get rid of the hacky fake boot-device and duplicate device-path
constructing (which needs to match what efi_disk and efi_net do).
Instead convert over to use efi_device_path helpers to construct
device-paths, and use that to look up the actual boot device.

Also, extract out a helper to plug things in properly to the
loaded_image.  In a following patch we'll want to re-use this in
efi_load_image() to handle the case of loading an image from a
file_path.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:36:56 +02:00
Rob Clark
e15fc33548 efi_loader: use proper device-paths for net
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:35:29 +02:00
Rob Clark
884bcf6f65 efi_loader: use proper device-paths for partitions
Also, create disk objects for the disk itself, in addition to the
partitions.  (UEFI terminology is a bit confusing, a "disk" object is
really a partition.)  This helps grub properly identify the boot device
since it is trying to match up partition "disk" object with it's parent
device.

Now instead of seeing devices like:

  /File(sdhci@07864000.blk)/EndEntire
  /File(usb_mass_storage.lun0)/EndEntire

You see:

  /ACPI(133741d0,0)/UnknownMessaging(1d)/EndEntire
  /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(0,800,64000,dd904a8c00000000,1,1)/EndEntire
  /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(1,64800,200000,dd904a8c00000000,1,1)/EndEntire
  /ACPI(133741d0,0)/UnknownMessaging(1d)/HD(2,264800,19a000,dd904a8c00000000,1,1)/EndEntire
  /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/EndEntire
  /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(0,800,60000,38ca680200000000,1,1)/EndEntire
  /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(1,61000,155000,38ca680200000000,1,1)/EndEntire
  /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(2,20fa800,1bbf8800,38ca680200000000,1,1)/EndEntire
  /ACPI(133741d0,0)/USB(0,0)/USB(0,0)/USB(0,0)/HD(3,1b6800,1f44000,38ca680200000000,1,1)/EndEntire

This is on a board with single USB disk and single sd-card.  The
UnknownMessaging(1d) node in the device-path is the MMC device,
but grub_efi_print_device_path() hasn't been updated yet for some
of the newer device-path sub-types.

This patch is inspired by a patch originally from Peter Jones, but
re-worked to use efi_device_path, so it doesn't much resemble the
original.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: s/unsigned/unsigned int/]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:34:42 +02:00
Rob Clark
adae4313cd efi_loader: flesh out device-path to text
It needs to handle more device-path node types, and also multiple levels
of path hierarchy.  To simplify this, initially construct utf8 string to
a temporary buffer, and then allocate the real utf16 buffer that is
returned.  This should be mostly for debugging or at least not critical-
path so an extra copy won't hurt, and is saner than the alternative.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:32:54 +02:00
Rob Clark
9309a1b76c efi_loader: drop redundant efi_device_path_protocol
This is really the same thing as the efi_device_path struct.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:32:00 +02:00
Rob Clark
b66c60dde9 efi_loader: add device-path utils
Helpers to construct device-paths from devices, partitions, files, and
for parsing and manipulating device-paths.

For non-legacy devices, this will use u-boot's device-model to construct
device-paths which include bus hierarchy to construct device-paths.  For
legacy devices we still fake it, but slightly more convincingly.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-20 10:31:55 +02:00
Heinrich Schuchardt
152a263c86 efi_loader: notify when ExitBootServices is invoked
All events of type EVT_SIGNAL_EXIT_BOOT_SERVICES have to be
notified when ExitBootServices is invoked.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:57 +02:00
Heinrich Schuchardt
32f4b2f8c4 efi_loader: implement task priority level (TPL)
Define variable holding tpl.
Implement RaiseTPL and RestoreTPL.
Implement TPL check in efi_signal_event.
Implement TPL check in efi_wait_for_event.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:57 +02:00
Heinrich Schuchardt
2eca84523f efi_loader: efi_set_timer: reset signaled state
We should be able to call efi_set_timer repeatedly.
So let us reset the signaled state here.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:57 +02:00
Heinrich Schuchardt
ca62a4f53e efi_loader: implement queueing of the notification function
For the correct implementation of the task priority level (TPL)
calling the notification function must be queued.

Add a status field 'queued' to events.

In function efi_signal_event set status queued if a notification
function exists and reset it after we have called the function.
A later patch will add a check of the TPL here.

In efi_create_event and efi_close_event unset the queued status.

In function efi_wait_for_event and efi_check_event
queue the notification function.

In efi_timer_check call the efi_notify_event
if the status queued is set.
For all timer events set status signaled.

In efi_console_timer_notify set the signaled state of the
WaitForKey event.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:57 +02:00
Heinrich Schuchardt
ea630ce9ea efi_loader: allow return value in EFI_CALL
Macro EFI_CALL was introduced to call an UEFI function.
Unfortunately it does not support return values.
Most UEFI functions have a return value.

So let's rename EFI_CALL to EFI_CALL_VOID and introduce a
new EFI_CALL macro that supports return values.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Heinrich Schuchardt
591cf2e161 efi_loader: avoid obscure constants in efi_runtime.c
We should use the predefined constants EFI_PAGE_SHIFT
and EFI_PAGE_MASK where applicable.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Heinrich Schuchardt
c96967e6d7 efi_loader: usage of always in Makefile
Variable always should only be appended but not overwritten by
lib/efi_loader/Makefile.

Remove variable efiprogs which is not otherwise used.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Alexander Graf
a148920e12 efi_loader: Fix efi_exit gd clobbering
Commit f494950b (efi_loader: call __efi_exit_check in efi_exit) added a call
to __efi_exit_check inside efi_exit to account for the fact that we're exiting
the efi_exit function via a longjmp call.

However, __efi_exit_check also swizzles gd to the application gd while the
longjmp will put us back into EFI context, so we need the efi (u-boot) gd.

This patch fixes that up by explicitly setting gd back to efi_gd before
doing the longjmp. It also adds a few comments on why it does that.

Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Heinrich Schuchardt
ae0bd3a983 efi_loader: write protocol GUID in OpenProtocol
To understand what is happening in OpenProtocol or LocateProtocol
it is necessary to know the protocol interface GUID.
Let's write a debug message.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Heinrich Schuchardt
da94073b42 efi_loader: call __efi_exit_check in efi_exit
The calls to __efi_entry_check and __efi_exit_check have to match.
If DEBUG is defined, panic() will be called otherwise.

If debugging is activated some Travis CI builds fail due to an
assertion in EFI_CALL without the patch.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Heinrich Schuchardt
a80a232e96 efi_disk: efi_disk_rw_blocks is not an API function
There is no need to use attribute EFIAPI for
efi_disk_rw_blocks. It is not an API function.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-09-18 23:53:56 +02:00
Rob Clark
78178bb0c9 lib: add some utf16 handling helpers
We'll eventually want these in a few places in efi_loader, and also
vsprintf.

Signed-off-by: Rob Clark <robdclark@gmail.com>
2017-09-12 17:57:59 -04:00
xypron.glpk@gmx.de
aee4f06dff efi_loader: use EFI_PAGE_MASK instead of EFI_PAGE_SIZE - 1
We should be consistent in the way we calculate page sizes.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-08-12 14:05:45 +02:00
Rob Clark
3d9880784e efi_loader: GOP fix for no display
uclass_first_device() returns 0 if there is no device, but error if
there is a device that failed to probe.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-08-11 13:49:23 +02:00
Rob Clark
796a78cbe5 efi_loader: LocateHandle should return EFI_NOT_FOUND if none found
Spotted this debugging OpenBSD's bootloader in qemu.  (Wouldn't really
fix anything, the problem was not having any disks, but we should
probably return the correct error code.)

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-08-11 11:08:33 +02:00
xypron.glpk@gmx.de
ebf199b92f efi_loader: attribute EFIAPI of efi_locate handle()
efi_locate_handle is called internally so it should not be
marked as EFIAPI.

The external function is efi_locate_handle_ext.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-08-11 10:57:10 +02:00
Alexander Graf
c1ae1a1608 efi_loader: Fix warning in efi_gop
Commit ca9193d2b1 ("efi_loader: gop: fixes for CONFIG_DM_VIDEO without
CONFIG_LCD") dropped the explicit (void*) cast for fb_base in efi gop support
for CONFIG_LCD without DM. This patch adds it back, eliminating the now occuring
warning again

Fixes: ca9193d2b1 ("efi_loader: gop: fixes for CONFIG_DM_VIDEO without CONFIG_LCD")
Reported-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-31 07:28:13 -04:00
Rob Clark
af65db85b8 efi_loader: indent entry/exit prints to show nesting level
This should make it easier to see when a callback back to UEFI world
calls back in to the u-boot world, and generally match up EFI_ENTRY()
and EFI_EXIT() calls.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: remove static from const var]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-29 00:18:46 +02:00
Rob Clark
c160d2f5ec efi_loader: add checking for incorrect use of EFI_ENTRY/EXIT
Missing an EFI_ENTRY() or doubling up EFI_EXIT() leads to non-obvious
crashes.  Let's add some error checking.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: fix bogus assert() and fix app_gd breakage]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-29 00:18:24 +02:00
Rob Clark
a095aadffa efi_loader: Add an EFI_CALL() macro
Rather than open-coding EFI_EXIT() + callback + EFI_ENTRY(), introduce
an EFI_CALL() macro.  This makes callbacks into UEFI world (of which
there will be more in the future) more concise and easier to locate in
the code.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-28 09:15:45 +02:00
Rob Clark
6cfd5f133a efi_loader: add some missing breaks
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-28 09:13:17 +02:00
Rob Clark
a1b24823b6 efi_loader: fix bug in efi_get_memory_map
When booting shim -> fallback -> shim -> grub -> linux the memory map is
a bit larger than the size linux passes in on the first call.  But in
the EFI_BUFFER_TOO_SMALL case we were not passing back the updated size
to linux so it would loop forever.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-26 22:09:49 +02:00
Alexander Graf
d98cdf6a92 efi_loader: Improve install_configuration_table
The INSTALL_CONFIGURATION_TABLE callback also provides the ability to
remove table entries. This patch adds that functionality.

Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-26 15:23:54 +02:00
Rob Clark
3304990ba4 efi_loader: remove more double EFI_EXIT() in efi_disk.c
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-26 08:56:15 +02:00
Rob Clark
b5104821c1 efi_loader: remove double EFI_EXIT() with efi_unsupported
Probably this went unnoticed before, but it causes problems with
addition of 804b1d73 ("efi_loader: log EFI return values too")

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-26 08:56:03 +02:00
Rob Clark
a17e62cc53 efi_loader: expose protocols via GUID
shim.efi (or rather gnu-efi's LibLocateProtocol() which shim.efi uses)
resolves protocols via efi_locate_handle() so the console protocols
need to be added to the efi object list.

Signed-off-by: Rob Clark <robdclark@gmail.com>
[agraf: whitespace fixes]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-25 10:58:07 +02:00
xypron.glpk@gmx.de
c0ebfc8664 efi_loader: implement ProtocolsPerHandle
Boot service ProtocolsPerHandle is implemented in
efi_protocols_per_handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-25 10:03:50 +02:00
xypron.glpk@gmx.de
b521d29eb1 efi_loader: parameter types for CreateEvent, SetTimer
The first argument 'type' of CreateEvent is an 32bit unsigned
integer bitmap and not an enum.

The second argument 'type' of SetTimer take values of an
enum which is called EFI_TIMER_DELAY in the UEFI standard.
To avoid confusion rename efi_event_type to efi_timer_delay.

Reported-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:54:29 +02:00
xypron.glpk@gmx.de
ff925938c8 efi_console: use EFIAPI for callback functions
The call to efi_create_event requires notification functions
flagged as EFIAPI.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:48:09 +02:00
Rob Clark
661c8327a6 efi_loader: workaround for grub lsefi bug
Patch has also been sent to fix grub to not ignore the error returned
and treat protocol_buffer_count as valid.  But that that might take a
while to trickle into distro's, so this workaround might be useful.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:47:36 +02:00
xypron.glpk@gmx.de
09c5ab909c efi_loader: implement ConvertDeviceNodeToText
Move the logic for converting a node to text from
efi_convert_device_path_to_text to convert_device_node_to_text.

Provide a wrapper function convert_device_node_to_text_ext.

As we use only shallow device paths so we can call
directly call efi_device_node_to_text from efi_device_path_to_text.

Add output for MAC addresses.

Add output for not yet supported types/subtypes.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:47:04 +02:00
xypron.glpk@gmx.de
c6e3c3e68a efi_memory: return MapKey
efi_get_memory_map should set a defined value for map_key.

We later can introduce the test against this value in
efi_exit_boot_services as required by the UEFI standard.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:46:13 +02:00
xypron.glpk@gmx.de
0ecba5db85 efi_memory: do parameter checks first
The parameter checks should be done first.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:46:01 +02:00
Rob Clark
ca9193d2b1 efi_loader: gop: fixes for CONFIG_DM_VIDEO without CONFIG_LCD
Make EFI GOP support work with DM_VIDEO but without legacy LCD.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:43:40 +02:00
Rob Clark
3e094c592b efi_loader: move guidcmp to header
Want to re-use this for file protocol, which I'm working on.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-24 14:38:21 +02:00
xypron.glpk@gmx.de
8787b02e32 efi_loader: correctly implement 100ns conversion
In efi_set_timer we receive the trigger time in intervals of 100 ns.
We should convert it to intervals of 1000 ns by 64bit division.

The patch supplies function efi_div10 that uses multiplication to
implement the missing 64 bit division.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:36:14 +02:00
xypron.glpk@gmx.de
91be9a77b7 efi_console: set up events
Set up a timer event and the WaitForKey event.
In the notify function of the timer event check for console input
and signal the WaitForKey event accordingly.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:36:04 +02:00
xypron.glpk@gmx.de
bfc724625f efi_loader: refactor efi_set_timer
efi_set_timer is refactored to make the function callable internally.
Wrapper function efi_set_timer_ext is provided for EFI applications.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:31:40 +02:00
xypron.glpk@gmx.de
49deb455e6 efi_loader: refactor efi_create_event
efi_create_event is refactored to make it possible to call it
internally. For EFI applications wrapper function
efi_create_event_ext is created.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:31:35 +02:00
xypron.glpk@gmx.de
503f269554 efi_loader: correct size for tpl level
The UEFI standard defines the type for the tpl level as EFI_TPL
alias UINTN.

UINTN is an integer is defined as an unsigned integer of native
width. So we can use size_t for the definition.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:31:04 +02:00
xypron.glpk@gmx.de
c68415922b efi_loader: implement multiple event support
Up to now the boot time supported only a single event.
This patch now allows four events.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:26:09 +02:00
xypron.glpk@gmx.de
2fd945fe72 efi_loader: use struct efi_event * instead of void *
In our implementation the internal structure of events is known.
So use the known type instead of void.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:26:01 +02:00
xypron.glpk@gmx.de
71275a3e98 efi_memory: avoid NULL dereference in efi_free_pool
If efi_free_pool is called with argument NULL an illegal memory
access occurs.

So let's check the parameter on entry.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:41 +02:00
xypron.glpk@gmx.de
70bfcdc6bb efi_loader: disk: iterate only over valid block devices
The efi_loader currently stops iterating over the available
block devices stopping at the first device that fails.
This may imply that no block device is found.

With the patch efi_loader only iterates over valid devices.

It is based on patch
06d592bf52f6 (dm: core: Add uclass_first/next_device_check())
which is currently in u-boot-dm.git.

For testing I used an odroid-c2 with a dts including
&sd_emmc_a {
	status = "okay";
};
This device does not exist on the board and cannot be initialized.

Without the patch:

=> bootefi hello
## Starting EFI application at 01000000 ...
WARNING: Invalid device tree, expect boot to fail
mmc_init: -95, time 1806
Found 0 disks
Hello, world!
## Application terminated, r = 0

With the patch:

=> bootefi hello
## Starting EFI application at 01000000 ...
WARNING: Invalid device tree, expect boot to fail
mmc_init: -95, time 1806
Scanning disk mmc@70000.blk...
Scanning disk mmc@72000.blk...
Card did not respond to voltage select!
mmc_init: -95, time 9
Scanning disk mmc@74000.blk...
Found 3 disks
Hello, world!
## Application terminated, r = 0

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:41 +02:00
xypron.glpk@gmx.de
cc5b70812f efi_loader: implement EFI_DEVICE_PATH_TO_TEXT_PROTOCOL
ConvertPathToText is implemented for
* type 4    - media device path
* subtype 4 - file path

This is the kind of device path we hand out for block devices.

All other cases may be implemented later.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[agraf: fix whitespace]
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:40 +02:00
xypron.glpk@gmx.de
88adae5ef0 efi_loader: reimplement efi_locate_protocol
The UEFI specification requires that LocateProtol finds the first
handle supporting the protocol and to return a pointer to its
interface.

So we have to assign the protocols to an efi_object and not use
any separate storage.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:40 +02:00
xypron.glpk@gmx.de
c2e703f903 efi_loader: implement LocateHandleBuffer
UEFI boot service LocateHandleBuffer is implemented by calling
efi_allocate_handle and efi_locate_handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:39 +02:00
xypron.glpk@gmx.de
26329584f3 efi_loader: refactor efi_locate_handle
To implement LocateHandleBuffer we need to call efi_locate_handle
internally without running through EFI_EXIT.

So put EFI_ENTRY and EFI_EXIT into a new wrapper function
efi_locate_handle_ext.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:39 +02:00
xypron.glpk@gmx.de
58b8358606 efi_loader: implement InstallMultipleProtocolInterfaces
Implement InstallMultipleProtocolInterfaces in function
efi_install_multiple_protocol_interfaces by repeatedly
calling efi_install_protocol_interface.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:39 +02:00
xypron.glpk@gmx.de
3d8e145608 efi_loader: refactor efi_uninstall_protocol_interface
For the implementation of UninstallMultipleProtocolInterfaces we
need to call efi_uninstall_protocol_interface. In internal calls
we should not pass through EFI_EXIT.

The patch introduces a wrapper function
efi_uninstall_protocol_interface_ext.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:39 +02:00
xypron.glpk@gmx.de
8bee5a3c13 efi_loader: refactor efi_install_protocol_interface
For the implementation of InstallMultipleProtocolInterfaces we
need to call efi_install_protocol_interface. In internal calls
we should not pass through EFI_EXIT.

The patch introduces a wrapper function
efi_install_protocol_interface_ext.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:38 +02:00
xypron.glpk@gmx.de
4b6ed0d7a1 efi_loader: implement UninstallProtocolInterface
Without the patch efi_uninstall_protocol_interface always returns an
error.

With the patch protocols without interface can be uninstalled.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:38 +02:00
xypron.glpk@gmx.de
e0549f8a17 efi_loader: implement InstallProtocolInterface
efi_install_protocol_interface up to now only returned an error code.

The patch implements the UEFI specification for InstallProtocolInterface
with the exception that it will not create new handles.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:38 +02:00
xypron.glpk@gmx.de
69baec6781 efi_loader: efi_open_protocol: parameter checks
Add all parameter checks for function efi_open_protocol that do not
depend on a locking table.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
2017-07-19 14:14:38 +02:00