Turns out initializing power rails is necessary, even for getting
serial output.
Change-Id: I3042c1001ae43b1e793ee6cb90bb79b8db0f8fd1
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2126
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This contains some size optimizations for the Maxim MAX77686 driver:
- change max77686_para.vol_{min,div} from u32 to u16 (currently their
max value is 50000 so it should be fine)
- remove max77686_para.regnum which takes 4 bytes for each and is not
used
(Patch was originally written by Hung-Te Lin, I'm just uploading it)
Change-Id: I24044427c49467e99380d1f60ebc59e69c285b22
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2124
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
ACPI code:
The ACPI code is not currently being compiled in by default, but
assuming that it will be at some point, I'm fixing the loop that
waits for the IMC to respond after sending it a command. The
loop now exits after 500ms, similar to the function in agesa.
Agesa Code:
a 16 bit variable will always be less than 100000. Change to
be a 32 bit variable.
Change-Id: I9430ef900a22d056871b744f3b1511abdfea516e
Signed-off-by: Martin Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/2119
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The cimx/sb800 IMC Firmware location Kconfig option has
a typo which would could set it to the wrong location.
Change-Id: I38016bebd1bfe6ad6d3f1c02cb1960712fbf4ab2
Signed-off-by: Martin Roth <martin@se-eng.com>
Reviewed-on: http://review.coreboot.org/2120
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This patch switches the Qemu target to use (pseudo) Cache As RAM
and enables some ACPI code. This allows to use the CBMEM console
and timestamp code with coreboot in Qemu. Right now, the ACPI code
is commented out because leaving it in breaks IDE.
Change-Id: Ie20f3ecc194004f354ae3437b9cf9175382cadf8
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2113
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
... without the need for a coreboot table entry for each of them.
Change-Id: I2917710fb9d00c4533d81331a362bf0c40a30353
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2117
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
... and indent it to make output more comprehensible.
Change-Id: If321f3233b31be14b2723175b781e5dd60dd72b6
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2116
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
From index(3):
CONFORMING TO 4.3BSD; marked as LEGACY in POSIX.1-2001. POSIX.1-2008
removes the specifications of index() and rindex(), recommending
strchr(3) and strrchr(3) instead.
Change-Id: I3899b9ca9196dbbf2d147a38dacd7e742a3873fe
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/2112
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This adds an option to the cbmem utility to dump the cbmem console.
To keep the utility backwards compatible, specifying -c disables
printing of time stamps. To print both console and time stamps, run
the utility with -ct
Change-Id: Idd2dbf32c3c44f857c2f41e6c817c5ab13155d6f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2114
Tested-by: build bot (Jenkins)
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
The first version of the cbmem utility was written in python,
but it had issues with 64bit systems and other little hick ups.
Since the C version has much fewer dependencies (no python needed
on target system), and it works in all corner cases, drop the
python version.
Change-Id: Ida3d6c9bb46f6d826f45538e4ceaa4fc1e771ff5
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2115
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: build bot (Jenkins)
We moved to using __ASSEMBLER__ years ago since it is set by as.
Change-Id: I60103ba23ebe87be1d0bc63beed0ef5b05eed4f2
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2111
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
It's a bad Linux heritage.. We have no userland in firmware.
Change-Id: Ib19e5ba713078ca37514571213d19f418417b964
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2108
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Most hton and noth functions are already available
through the system headers we include on OS X, causing
the compiler to warn about duplicate definitions.
Change-Id: Id81852dfc028cf0c48155048c54d431436889c0e
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2106
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
It makes no sense to have directories with one file.
Change-Id: I65ba93dda5e6a4bcc5a7cc049c1378ebf5d6abcd
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2105
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This reverts commit ec8d35fe91
We are almost certain that this is not necessary.
Change-Id: I70e94f883be95655da00a0b127ed9ffd7c81c63b
Reviewed-on: http://review.coreboot.org/2104
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
Our reference toolchain uses -mabi=aapcs whereas we started
forcing -mabi=aapcs-linux. Drop this to prevent ABI incompatibility.
Also drop -fno-common since that's set in the top level Makefile.inc
already.
Change-Id: I4afdcf5da9a5d86c2f9e5de5c7d523ccd2f5f1e0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2103
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
We accidently checked in some files from libgcc as well as
a Makefile from u-boot and a duplicate implementation of div0.
Drop all those files to reduce the confusion.
Change-Id: I8ff6eabbced6f663813f8cc55f19c81839d03477
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2102
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
There was a misuse of bool that would cause the dcache policy to not be
set up correctly, but instead present options "y" and "n" in the Kconfig
menu.
Also, TINY_BOOTBLOCK was removed a while ago, everything is
TINY_BOOTBLOCK now. Hence remove the option.
Change-Id: I5c28ac828955c69614c7bdaf106f79db51e68723
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2101
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Add function "clear_ioapic" before "setup_ioapic" for RD890 northbridge
like it is done for SB700 and SB800 chipsets ("amd/cimx/sb{7,8}00").
No functionality change is noticed.
Change-Id: I1fd87692d8bf35c166141c9b7a6a1e748c19a636
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Reviewed-on: http://review.coreboot.org/2045
Tested-by: build bot (Jenkins)
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
The kernel on Ubuntu 12.04LTS does not allow to use
fseek/fread to read the coreboot table at the end of
memory but will instead abort cbmem with a "Bad Address"
error.
Whether that is a security feature (some variation of
CONFIG_STRICT_DEVMEM) or a kernel bug is not yet clear,
however using mmap works nicely.
Change-Id: I796b4cd2096fcdcc65c1361ba990cd467f13877e
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2097
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
There are two CPUs on s8226 and each CPU has 8 cores.
CPU 0 takes lapic from 0x10 to 0x17 and CPU 1 takes from 0x20 to 0x27.
So the first core's lapic is 0x10 rather than 0x20.
Change-Id: I925114d44f2f4974eb62c3832d8c9139a2a06c96
Signed-off-by: Siyuan Wang <SiYuan.Wang@amd.com>
Signed-off-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-on: http://review.coreboot.org/2099
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The 'VERSION' in CBFS header file is confusing and may conflict when being used
in libpayload.
Change-Id: I24cce0cd73540e38d96f222df0a65414b16f6260
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2098
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
This just cleans out some unused headers and tidies up the early
serial code.
TODO: Clean-up or replace FDT code, make "base_port" easier to
configure.
A bit of cleanup based on earlier patches.
Change-Id: Ie77ee6d4935346e0053c09252055662f1a45d5f5
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2084
Tested-by: build bot (Jenkins)
This patch makes pre-RAM serial init more generic, particularly for
platforms which do not necessarily need cache-as-RAM in order to use
the serial console and do not have a standard 8250 serial port.
This adds a Kconfig variable to set romstage-* for very early serial
console init. The current method assumes that cache-as-RAM should
enable this, so to maintain compatibility selecting CACHE_AS_RAM will
also select EARLY_SERIAL_CONSOLE.
The UART code structure needs some rework, but the use of ROMCC,
romstage, and then ramstage makes things complex.
uart.h now includes all .h files for all uarts. All 2 of them.
This is actually a simplifying change.
Change-Id: I089e7af633c227baf3c06c685f005e9d0e4b38ce
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2086
Tested-by: build bot (Jenkins)
This updates $CFLAGS used for armv7. Most of them were just added
to be consistent with what u-boot does. The important ones here
are -march=armv7-a and -mthumb (to allow 16-bit Thumb instructions).
I removed the hard float support because it got errors and
coreboot should never use floats anyway. We're still having trouble
with enums but I want to see how far it gets with this patch.
Also, put the flags in a form that makes diffs easier to read. It's
almost impossible otherwise.
Finally, move some flags to the architecture Makefile, and
rely on the fact that some are set for all architectures.
Depends-On: I6f730d017391f9ec4401cdfd34931c869df10a9e
Change-Id: Ia8a1ae22959933e06f7b996d1832cea40819f1ff
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2075
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This mirrors the naming convention of handlers in
northbridge and southbridge.
Change-Id: I45d97c569991c955f0ae54ce909d8c267e9a5173
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/2058
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
It's too easy to forget this and it's kind of important, so Just Add It.
Change-Id: Ic7ab7658425a98d5d435bfef46f89cc6a56c7284
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2096
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This replaces a somewhat useless calculation used earlier (which
always evaluated to 0) with an offset to specify the location
of the Coreboot bootblock.
Change-Id: Ib85aaccf138cebeb6bf8aedf82308861206dff48
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2094
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This patch does two things which will take effect in follow-up
patches:
1. Add an intermediate Makefile rule for dd'ing BL1 into the
coreboot.rom pre-image. This is modeled after a similar hack
for the bd82x6x southbridge.
2. Add a Kconfig variable, BOOTBLOCK_OFFSET, which will be used to
pass the bootblock offset into cbfstool.
Change-Id: I89da255dc903c387b754b06a11bb3439035ead87
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2093
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The "offs" provided on the command-line was not taken into account
when creating an image for armv7...
Change-Id: I1781bd636f60c00581f3bd1d54506f0f50bb8ad0
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2092
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
These are needed for communicating with the PMIC on Snow. We'll
tidy them up as we go along...
Change-Id: I197f59927eae0ad66191862d052de2a8873fb22f
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2078
Tested-by: build bot (Jenkins)
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This imports SPL (second phase loader) files from U-Boot. Most of the
content of these files will eventually go away since they're fairly
U-Boot specific. For now they are here to make Jenkins happy.
Change-Id: Ib3a365ecb9dc304b20f7c1c06665aad2c0c53e69
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2081
Tested-by: build bot (Jenkins)
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
The old start.S file did a lot of work and had AP-specific #ifndef's.
The new init.S will eventually contain only bare minimum generic ARM
code for use by the bootblock. Processor-specific stuff and things
that take place later in the boot process should go elsewhere.
Change-Id: I7db0a77ee4bbad1ddecb193ea125d8941a50532b
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2083
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The tool could print much more useful information than
just time stamps, for example the cbmem console on systems
that don't have a kernel patched to support /sys/firmware/log.
Hence, add command line option parsing to make adding such
features easier in the future.
Change-Id: Ib2b2584970f8a4e4187da803fcc5a95469f23a6a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2091
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: build bot (Jenkins)
'nough said. It was broken since 2006.
Change-Id: I312ac07eee65d6bb8567851dd38064c7f51b3bd2
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2062
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Success return value in DMI functions GetDmiInfoMain(..) and GetType4Type7Info(...) of AGESA vendorcode is "Flag = TRUE".
This results in a failure of init late function:
"agesawrapper_amdinitlate failed: 1"
It happens because TRUE = 1 = AGESA_UNSUPPORTED.
Replacing TRUE with AGESA_SUCCESS (= 0) fixes this problem.
Only family f15tn does not have such bug.
This patch just replaces TRUE with AGESA_SUCCESS, but maybe all DMI functions should be copied from Trinity family?
Tested on Supermicro H8QGI board with 4 AMD Opteron 6234 processors (f15).
Change-Id: I51bf91333c088a825b92d4a44d1ebe4380c8026c
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/2070
Reviewed-by: Marc Jones <marcj303@gmail.com>
Tested-by: build bot (Jenkins)
I have issues when AmdReadEventLog function tries to use BiosCallouts interface.
So it is necessary to provide callout pointer to this function.
Change-Id: I4080e5f07d5d28c41688b2a7deff944b7a0f7bf7
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Reviewed-on: http://review.coreboot.org/2064
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
That code will be used to disable the internal GFX card and enable the
external PCIe card.
The following lines from function `rs780_internal_gfx_enable()` are
taken and reversed.
/* Disable external GFX and enable internal GFX. */
l_dword = pci_read_config32(nb_dev, 0x8c);
l_dword &= ~(1<<0);
l_dword |= 1<<1;
pci_write_config32(nb_dev, 0x8c, l_dword);
It has been tested on the M4A785T-M with the following card inside the
PCIe 16x slot:
02:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 210] (rev a2)
Change-Id: I7bd412b987fde98c97464175e2c7a384a8f0fb84
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/2065
Tested-by: build bot (Jenkins)
This commit enables the external graphics card.
In order to work, the internal graphic card has to be
disabled, that is done in src/device/device.c through:
vga_onboard->ops->disable(vga_onboard);
which calls the RS780 disable operation introduced in the following
commit: "rs780: add .disable pcie_ops"
This commit was tested with and without the following card:
02:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 210] (rev a2)
Thanks Aladyshev for the pointer(in the #coreboot IRC channel on Freenode servers):
Dec 20 19:43:32 <Aladyshev> If you list your internal card in devicetree.cb,
coreboot will distinguish external and internal VGA and choose external one
Change-Id: I92e59dffd158db096a6e99d1ef6e2e248fef933c
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: http://review.coreboot.org/2067
Tested-by: build bot (Jenkins)
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
If a 3rd party blob option is selected, make sure that it makes the
user select CONFIG_USE_BLOBS as otherwise the build will fail.
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Change-Id: I04429f23137946525c8577dd9c979bd4a0d17cdc
Reviewed-on: http://review.coreboot.org/2080
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This just imports a header. We may wish to modify the i2c interface
and/or unify it with the smbus interface we currently have.
Change-Id: I314f3aef62be936456c6c3e164a3db2c473b8792
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2079
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Fix some minor discrepancies which prevented the MAX77676 from
getting compiled in properly.
Change-Id: Ib29136da6c15a4bdb24926a91729431c507cd209
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2076
Tested-by: build bot (Jenkins)
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Since these don't seem very generic and depend on the BL1, let's
move them to the CPU-specific Kconfig.
Change-Id: I33059b7db30d35a1853918a580f312e50a3499fa
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2077
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is still a work-in-progress, but it seems to work better than
before and is less complicated...
Change-Id: I6f730d017391f9ec4401cdfd34931c869df10a9e
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2041
Tested-by: build bot (Jenkins)
Supermicro H8QGI has integrated Matrox G200 16MB DDR2 graphics.
List it in devicetree.cb to mark it as onboard VGA to coreboot.
This change makes menuconfig option "Use onboard VGA as primary video device" work.
Change-Id: Ia6b9f60e3ae705689f22babd544ad6e628a85df1
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Reviewed-on: http://review.coreboot.org/2042
Tested-by: build bot (Jenkins)
Reviewed-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>
Fix little mistake in get_bus_conf code
Change-Id: I8c09e501082caa0a20266b007c0744630a356de0
Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru>
Reviewed-on: http://review.coreboot.org/2046
Tested-by: build bot (Jenkins)
Reviewed-by: Siyuan Wang <wangsiyuanbuaa@gmail.com>
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Reviewed-by: Marc Jones <marcj303@gmail.com>
David Hendricks