Commit graph

1596 commits

Author SHA1 Message Date
Heinrich Schuchardt
05fefe7681 efi_loader: ACPI device node to text
The device path to text protocol renders ACPI device nodes incorrectly.

Use capital hexadecimal numbers as shown in the UEFI spec examples.

Always output the optional UID. This matches what UEFI SCT expects and
saves us an `if`.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
3b985113be efi_loader: infinite recursion notifying events
UEFI SCT uses this call sequence to determine the current TPL level inside
notification functions:

    OldTpl = BS->RaiseTPL(TPL_HIGH_LEVEL);
    BS->RestoreTPL(OldTpl);

In RestoreTPL() we trigger the notification function of queued events. If
we do not mark the event as non-queued before calling the notification
function, this results in an infinite recursive call sequence.

Mark the event as non-queued before entering the notification function.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
8ae39857b9 efi_loader: simplify efi_allocate_pages()
Replace unnecessary control structures by using return statements.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
f756fe83b0 efi_loader: AllocateAdress error handling
If AllocatePages() is called with AllocateAddress, the UEFI spec requires
to return EFI_NOT_FOUND in case the memory page does not exist.

The UEFI SCT II 2017 spec additionally requires to return EFI_NOT_FOUND if
the page is already allocated.

Check that *Memory refers to an unallocated page.

UEFI SCT II (2017): AllocatePages(), 5.1.2.1.9 - 5.1.2.1.10

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
735fd22800 efi_loader: out of resources in AllocatePages()
According to the UEFI AllocatePages() has to return EFI_OUT_OF_RESOURCES if
sufficient memory is not available.

Change the return value.

UEFI SCT II (2017): 3.2.1 AllocatePages(), 5.1.2.1.8

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
7d3af58ed9 efi_loader: check memory address before freeing
When we call FreePages() we essentially add memory to our memory map. We
shouldn't do this for memory that does not exit.

Check if the memory that is to be freed via FreePages() or FreePool() is in
our memory map and is not EFI_CONVENTIONAL_MEMORY.

This check is mandated by the UEFI specification.

Cf. UEFI SCT  II (2017), 3.2.2 FreePages(), 5.1.2.1 - 5.1.2.2

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
96aa99cded efi_loader: error code in UninstallProtocolInterface()
According to the UEFI specification UninstallProtocolInteface() has to
return EFI_NOT_FOUND if the interface is not found.

Correct the return value.

Cf. UEFI SCT II spec (2017), 3.3.2 UninstallProtocolInterface(), 5.1.3.2.4

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
61c63db7fe efi_loader: superfluous check in efi_remove_protocol()
efi_search_protocol() already checks that the GUID matches. Don't check
a second time.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
ab557141c2 efi_loader: LocateDevicePath() incorrect parameter check
A parameter check in LocateDevicePath() does not match the requirements of
the UEFI spec.

If device is NULL, only return EFI_INVALID_PARAMETER if a matching handle
is found.

Cf. UEFI SCT II specification (2017)3.3.7 LocateDevicePath(), 5.1.3.7.3

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
0a84319665 efi_loader: fix typo in efi_locate_handle() comment
%s/not buffer/no buffer/

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
64b5ba4d29 efi_loader: make device path to text protocol customizable
The device path to text protocol is not needed for EBBR compliance. So
let's make it a customizable option.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
334997356e efi_loader: make Unicode collation protocol customizable
The Unicode collation protocol is not needed for EBBR compliance. So let's
make it a customizable option.

The Unicode capitalization table is only needed by this protocol. So let it
depend on the Unicode collation protocol.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
9363fd22df efi_loader: reword the EFI_LOADER config option
No need to mention U-Boot in brief description.
Fix several typos, mention iPXE.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
5684c8d1ea efi_loader: format Kconfig
Use if/endif for dependencies to give structure to the configuration menu.

Sort important settings to the top.

Abbreviate the short description of EFI_LOADER_HII.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
5ad3877448 efi_loader: observe CONFIG_EFI_LOADER_HII
If EFI_LOADER_HII is not set, do not unnecessarily compile files for HII
protocols.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-12 20:54:22 +02:00
Heinrich Schuchardt
b015ab57bf efi_loader: signature of ExitBootServices()
Consistently use efi_uintn_t as type of memory keys.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Alexander Graf <graf@amazon.com>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
470dfa50da efi_loader: LoadImage() check source size
If the size of the source buffer is 0, return EFI_LOAD_ERROR.
(UEFI SCT II 2017: 3.4.1 LoadImage() - 5.1.4.1.6)

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
84a918e8ce efi_loader: LoadImage() check parent image
If the parent image handle does not refer to a loaded image return
EFI_INVALID_PARAMETER.
(UEFI SCT II 2017: 3.4.1 LoadImage() - 5.1.4.1.1)

Mark our root node as a loaded image to avoid an error when using it as
parent image.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
e7c3cd6b67 efi_loader: HandleProtocol parameter checks
HandleProtocol() and OpenProtocol() have to return EFI_UNSUPPORTED if the
protocol is not installed on the handle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
529886a097 efi_loader: use EFI_PRINT instead of debug
For correct indentation of messages in the UEFI API implementation use
EFI_PRINT() instead of debug().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
ec163faa1b efi_loader: CloseProtocol() requires valid agent handle
Return EFI_INVALID_PARAMETER from CloseProtcol() if the agent handle is not
valid.

Return EFI_INVALID_PARAMETER if the optional controller handle is not
valid.

Return immediately from efi_search_obj if the handle is NULL.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
24f6be7ada efi_selftest: unit test for RegisterProtocolNotify()
Provide a unit test for the RegisterProtocolNotify() boot service.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
ab15d4149e efi_loader: implement RegisterProtocolNotify()
The RegisterProtocolNotify() boot service registers an event to be
notified upon the installation of a protocol interface with the
specified GUID.

Add the missing implementation.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
3626e53990 efi_loader: EVT_NOTIFY_SIGNAL events
The notification function of events of type EVT_NOTIFY_SIGNAL should always
be queued when SignalEvent() is called.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
8101dd3dfa efi_selftest: remove redundant function efi_st_memcmp()
Function memcmp() is available in efi_freestanding.c. So we do not remove a
further implementation.

Replace all usages of efi_st_memcmp() by memcmp().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:04 +02:00
Heinrich Schuchardt
126a43f15b efi_loader: unload applications upon Exit()
Implement unloading of images in the Exit() boot services:

* unload images that are not yet started,
* unload started applications,
* unload drivers returning an error.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
df116e81ea efi_loader: implement UnloadImage()
Implement the UnloadImage() boot service

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
46e99a9cf7 efi_loader: move efi_unload_image() down in source
Move efi_unload_image() down in source to avoid forward declaration in
follwing page.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
cd73aba656 efi_loader: mark started images
In UnloadImage() we need to know if an image is already started.

Add a field to the handle structure identifying loaded and started images.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
8dfb5e6e21 efi_loader: correct parameter check in LocateHandle()
If LocateHandle() does not find an entry EFI_NOT_FOUND has to be returned
even if BufferSize is NULL.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
1884512b77 efi_loader: allowable event types in CreateEventEx()
CreateEventEx() does not allow the following event types:

* EVT_SIGNAL_EXIT_BOOT_SERVICES
* EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE

This check is needed to pass the UEFI SCT conformance test.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Alexander Graf <agraf@csgraf.de>
2019-05-07 21:10:03 +02:00
Heinrich Schuchardt
52cbac9b06 efi_loader: clean up UEFI sub-system initialization
allow_unaligned(), switch_to_non_secure_mode(), and efi_init_obj_list() are
called in sequence in multiple places.

Move calls to allow_unaligned() and switch_to_non_secure_mode() to
efi_init_obj_list().

Remove unused includes.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-07 21:10:03 +02:00
Marek Behún
8509f22aac lib: add Zstandard decompression support
Add the zstd library from Linux kernel (only decompression support).
There are minimal changes to build with U-Boot, otherwise the files are
identical to Linux commit dc35da16 from March 2018, the files had not
been touched since in kernel. Also SPDX lincese tags were added.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
2019-05-05 08:48:50 -04:00
Marek Behún
83a486b6fd lib: Add xxhash support
This adds the xxhash support from Linux. Files are almost identical to
those added to Linux in commit 5d240522 ("lib: Add xxhash module") (they
haven't been touched since in Linux). The only difference is to add some
includes to be compatible with U-Boot. Also SPDX lincese tags were
added.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
2019-05-05 08:48:50 -04:00
Heinrich Schuchardt
6c74e94a65 lib/display_options: avoid illegal memory access
display_options_get_banner_priv() overwrites bytes before the start of the
buffer if the buffer size is less then 3. This case occurs in the Sandbox
when executing the `ut_print` command.

Correctly handle small buffer sizes. Adjust the print unit test to catch
when bytes before the buffer are overwritten.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2019-05-05 08:48:50 -04:00
Tom Rini
b362fe0848 Merge branch '2019-05-03-master-imports'
- Various btrfs fixes
- Various TI platform fixes
- Other fixes (cross build, taurus update, Kconfig help text)
2019-05-03 07:30:55 -04:00
Heiko Schocher
5132361ad4 lib: Kconfig: fix help text for GZIP
commit 95f4bbd581 ("lib: fdt: Allow LZO and GZIP DT compression in U-Boot")

introduced Kconfig option for gzip in U-Boot, but help text
says gzip for SPL, which is wrong. Fix this.

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Marek Vasut <marex@denx.de>
2019-05-03 07:23:17 -04:00
Heinrich Schuchardt
cb943418bf lib/vsprintf: remove #include <uuid.h> from vsprintf.c
common.h already includes uuid.h

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-03 07:23:17 -04:00
Eugeniu Rosca
4ccf678f37 lib: uuid: Fix unseeded PRNG on RANDOM_UUID=y
The random uuid values (enabled via CONFIG_RANDOM_UUID=y) on our
platform are always the same. Below is consistent on each cold boot:

 => ### interrupt autoboot
 => env default -a; gpt write mmc 1 $partitions; print uuid_gpt_misc
 ...
 uuid_gpt_misc=d117f98e-6f2c-d04b-a5b2-331a19f91cb2
 => env default -a; gpt write mmc 1 $partitions; print uuid_gpt_misc
 ...
 uuid_gpt_misc=ad5ec4b6-2d9f-8544-9417-fe3bd1c9b1b3
 => env default -a; gpt write mmc 1 $partitions; print uuid_gpt_misc
 ...
 uuid_gpt_misc=cceb0b18-39cb-d547-9db7-03b405fa77d4
 => env default -a; gpt write mmc 1 $partitions; print uuid_gpt_misc
 ...
 uuid_gpt_misc=d4981a2b-0478-544e-9607-7fd3c651068d
 => env default -a; gpt write mmc 1 $partitions; print uuid_gpt_misc
 ...
 uuid_gpt_misc=6d6c9a36-e919-264d-a9ee-bd00379686c7

While the uuids do change on every 'gpt write' command, the values
appear to be taken from the same pool, in the same order.

Assuming U-Boot with RANDOM_UUID=y is deployed on a large number of
devices, all those devices would essentially expose the same UUID,
breaking the assumption of system/RFS/application designers who rely
on UUID as being globally unique (e.g. a database using UUID as key
would alias/mix up entries/records due to duplicated UUID).

The root cause seems to be simply _not_ seeding PRNG before generating
a random value. It turns out this belongs to an established class of
PRNG-specific problems, commonly known as "unseeded randomness", for
which I am able to find below bugs/CVE/CWE:
 - https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-0285
   ("CVE-2015-0285 openssl: handshake with unseeded PRNG")
 - https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-9019
   ("CVE-2015-9019 libxslt: math.random() in xslt uses unseeded
   randomness")
 - https://cwe.mitre.org/data/definitions/336.html
   ("CWE-336: Same Seed in Pseudo-Random Number Generator (PRNG)")

The first revision [1] of this patch updated the seed based on the
output of get_timer(), similar to [4].

There are two problems with this approach:
 - get_timer() has a poor _ms_ resolution
 - when gen_rand_uuid() is called in a loop, get_timer() returns the
   same result, leading to the same seed being passed to srand(),
   leading to the same uuid being generated for several partitions
   with different names

The above drawbacks have been addressed in the second version [2].
In its third revision (current), the patch reworded the description
and summary line to emphasize it is a *fix* rather than an improvement.

Testing [3] consisted of running 'gpt write mmc 1 $partitions' in a
loop on R-Car3 for several minutes, collecting 8844 randomly generated
UUIDS. Two consecutive cold boots are concatenated in the log.
As a result, all uuid values are unique (scripted check).

Thanks to Roman, who reported the issue and provided support in fixing.

[1] https://patchwork.ozlabs.org/patch/1091802/
[2] https://patchwork.ozlabs.org/patch/1092945/
[3] https://gist.github.com/erosca/2820be9d554f76b982edd48474d0e7ca
[4] commit da384a9d76 ("net: rename and refactor eth_rand_ethaddr() function")

Reported-by: Roman Stratiienko <roman.stratiienko@globallogic.com>
Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
Heinrich Schuchardt
e6023be41e efi_loader: description of efi_add_handle()
Correct the comments describing function efi_add_handle().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
Heinrich Schuchardt
a9a25cc3e7 efi_selftest: test exit_data
Amend the unit test 'start image exit' to transfer a string as exit data.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
Heinrich Schuchardt
556d8dc937 efi_loader: implement support of exit data
In case of a failure exit data may be passed to Exit() which in turn is
returned by StartImage().

Let the `bootefi` command print the exit data string in case of an error.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
Heinrich Schuchardt
39a1ff8cea efi_loader: optional data in load options are binary
The field boot OptionalData in structure _EFI_LOAD_OPTIONS is for binary
data.

When we use `efidebug boot add` we should convert the 5th argument from
UTF-8 to UTF-16 before putting it into the BootXXXX variable.

When printing boot variables with `efidebug boot dump` we should support
the OptionalData being arbitrary binary data. So let's dump the data as
hexadecimal values.

Here is an example session protocol:

=> efidebug boot add 00a1 label1 scsi 0:1 doit1 'my option'
=> efidebug boot add 00a2 label2 scsi 0:1 doit2
=> efidebug boot dump
Boot00A0:
  attributes: A-- (0x00000001)
  label: label1
  file_path: .../HD(1,MBR,0xeac4e18b,0x800,0x3fffe)/doit1
  data:
    00000000: 6d 00 79 00 20 00 6f 00 70 00 74 00 69 00 6f 00  m.y. .o.p.t.i.o.
    00000010: 6e 00 00 00                                      n...
Boot00A1:
  attributes: A-- (0x00000001)
  label: label2
  file_path: .../HD(1,MBR,0xeac4e18b,0x800,0x3fffe)/doit2
  data:

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:50 +02:00
AKASHI Takahiro
d40e05ae95 efi_loader: set OsIndicationsSupported at init
UEFI variables should be installed using well-defined API.
Currently we don't support much, but the value of OsIndicationsSupported
will be updated once some features are added in the future.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>

Add comments. Rename a variable.

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:49 +02:00
Heinrich Schuchardt
e00b82db80 efi_loader: FreePages() must fail with pages = 0
The UEFI spec requires that freeing of pages fails if the number of pages
to be freed is 'invalid'. Check that it is not zero.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:49 +02:00
Heinrich Schuchardt
751e928d07 efi_loader: parameter check CreateEventEx()
CreateEvent() and CreateEventEx() should check that a notify function is
provided for either of EVT_NOTIFY_SIGNAL or EVT_NOTIFY_WAIT.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-05-02 18:17:49 +02:00
Tom Rini
7d99406742 Various minor sandbox iumprovements
Fixes for tracing with sandbox
 Refactoring for boot_get_fdt()
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Merge tag 'pull-24apr19' of git://git.denx.de/u-boot-dm

Various minor sandbox iumprovements
Fixes for tracing with sandbox
Refactoring for boot_get_fdt()
2019-04-24 12:27:29 -04:00
Tom Rini
180e38ad2d Pull request for UEFI sub-system for v2019.07-rc1 (3)
This patch series reworks the implementation of the `bootefi` command to
 remove code duplication by using the LoadImage() boot service to load
 binaries.
 
 Missing short texts for UEFI protocols are added for display by the
 `efidebug dh` command.
 
 Missing parameter checks for AllocatePages() and CreateDeviceNode() are
 implemented.
 
 The constants for protocol GUIDs are changed to match the names in the UEFI
 specification.
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Merge tag 'efi-2019-07-rc1-3' of git://git.denx.de/u-boot-efi

Pull request for UEFI sub-system for v2019.07-rc1 (3)

This patch series reworks the implementation of the `bootefi` command to
remove code duplication by using the LoadImage() boot service to load
binaries.

Missing short texts for UEFI protocols are added for display by the
`efidebug dh` command.

Missing parameter checks for AllocatePages() and CreateDeviceNode() are
implemented.

The constants for protocol GUIDs are changed to match the names in the UEFI
specification.
2019-04-24 12:26:58 -04:00
Eugeniu Rosca
829ceb2821 image: android: allow booting lz4-compressed kernels
According to Android image format [1], kernel image resides at 1 page
offset from the boot image address. Grab the magic number from there
and allow U-Boot to handle LZ4-compressed KNL binaries instead of
hardcoding compression type to IH_COMP_NONE. Other compression types,
if needed, can be added later.

Tested on H3ULCB-KF using the image detailed in [2].

[1] Excerpt from include/android_image.h
    +-----------------+
    | boot header     | 1 page
    +-----------------+
    | kernel          | n pages
    +-----------------+
    | ramdisk         | m pages
    +-----------------+
    | second stage    | o pages
    +-----------------+

[2] => iminfo 4c000000
    ## Checking Image at 4c000000 ...
    Android image found
    kernel size:      85b9d1
    kernel address:   48080000
    ramdisk size:     54ddbc
    ramdisk addrress: 4a180000
    second size:      0
    second address:   48000800
    tags address:     48000100
    page size:        800
    os_version:       1200012a (ver: 0.9.0, level: 2018.10)
    name:
    cmdline:          buildvariant=userdebug

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
2019-04-24 07:27:32 -04:00
Thierry Reding
d81d96901e fdtdec: Use fdt_setprop_u32() for fdtdec_set_phandle()
The fdt_setprop_u32() function does everything that we need, so we
really only use the function as a convenience wrapper, in which case it
can simply be a static inline function.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2019-04-23 20:26:43 -06:00