summaryrefslogtreecommitdiff
path: root/src/soc/intel/jasperlake/chip.h
AgeCommit message (Collapse)Author
2021-07-28soc/intel/jsl: Add disable_external_bypass_vr configSimon Yang
This dev tree config controls the Vnn/Vcc1P05 bypass mode for Jasperlake. BUG=b:191691430 BRANCH=dedede TEST=Build fw and confirm FSP setting are set properly by log Signed-off-by: Simon Yang <simon1.yang@intel.com> Change-Id: I10bc203d3fed32ab65f325978426b7d0fca6f392 Reviewed-on: https://review.coreboot.org/c/coreboot/+/55744 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jamie Chen <jamie.chen@intel.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2021-07-28soc/intel/jasperlake: add pcie modphy settingsJamie Chen
This patch adds device tree settings to control pcie modphy tuning FSP UPDs. With this patch, the pcie modphy can be tuned per board. BUG=b:192716633 BRANCH=NONE TEST=build dedede variant coreboot with fw_debug enable and check if these settings have been changed successfully on fsp debug log. Change-Id: I80a91d45f9dd8ef218846e1284fdad309313e831 Signed-off-by: Jamie Chen <jamie.chen@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/56336 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2021-07-26soc/intel/jasperlake: Set xHCI LFPS period sampling off timeBen Kao
Provide an option to set xHCI LFPS period sampling off time (SS_U3_LFPS_PRDC_SAMPLING_OFFTIME_CTRL in JSL EDS revision 2.0). If the option is set in the devicetree, the bits[7:4] in xHCI MMIO BAR + offset 0x80A4 (PMCTRL_REG) will be updated. The host will sample LFPS for U3 wake-up detection when suspended, but it doesn't sample LFPS at all time due to power management, the default xHCI LFPS period sampling off time is 9ms. If the xHCI LFPS period sampling off time is not 0ms, the host may miss the device-initiated U3 wake-up and causes some kind of race condition for U3 wake-up between the host and the device. BUG=b:187801363, b:191426542 TEST=build coreboot with xhci_lfps_sampling_offtime_ms and flash the image to the device. Run following command to check the bits[7:4]: iotools mmio_read32 "XHCI MMIO BAR + 0x80A4" Signed-off-by: Ben Kao <ben.kao@intel.com> Change-Id: I0e13b7f51771dc185a105c5a84a8e377ee4d7d73 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56063 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2021-04-21soc/intel/alderlake: rename CONFIG_MAX_PCIE_CLOCKS to CONFIG_MAX_PCIE_CLOCK_SRCRizwan Qureshi
CONFIG_MAX_PCIE_CLOCKS renamed to MAX_PCIE_CLOCK_SRC to make it clear that this config is for the number of PCIe Clock sources available which is different from PCIe clock reqs. This is more relevant in alderlake, as the number clock source and clock reqs differ. However since this is a better name, renaming it throughout the soc/intel tree. Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com> Change-Id: I747c94331b68c4ec0b6b5a04149856a4bb384829 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52194 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-03soc/intel: Retype `CnviBtAudioOffload` devicetree optionAngel Pons
The `FORCE_ENABLE` and `FORCE_DISABLE` names do not match what FSP UPDs say, and can be confused with the `PchHdaTestPowerClockGating` UPD. Replace the enum with a bool, and drop the confusing names. Note that the enum for Ice Lake was incorrect, but no mainboards used the option. Change-Id: I2c9b4c6a2f210ffca946ca196299fa672a06ccc7 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51154 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-01-18soc/intel/common: Move L1_substates_control to pcie_rp.hEric Lai
L1_substates_control is common define. Move out of soc level. Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com> Change-Id: I54574b606985e82d00beb1a61cce3097580366a4 Reviewed-on: https://review.coreboot.org/c/coreboot/+/49295 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-01-08soc/intel/jasperlake: Update acoustic noise related parametersMaulik V Vaghela
We need to fill Acoustic noise mitigation related UPDs only in case when acoustic noise mitigation is enabled. This will also clarify the user that they need to enable Acoustic noise mitigation while using this config in mainboard. We're only filling UPD for domain VR index 0 since there is only one VR domain for JSL (VCCIN VR). Reference: JSL EDS (Document# 613601) (Chapter 3.4) BUG=None BRANCH=dedede TEST=UPD values are getting filled correctly when Acoustic noise mitigation is enabled. Change-Id: I0cf4ccfced13b0d32b3d20713eace63e66945332 Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/49187 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Evan Green <evgreen@chromium.org>
2020-12-30soc/intel: hook up new gpio device in the soc chipsMichael Niewöhner
This change adds the required gpio operations struct to soc/common gpio code and hooks them up in all socs currently using the gpio block code, except DNV-NS, which is handled in a separate change. Also, add the gpio device to existing chipset devicetrees. Successfully tested on Supermicro X11SSM-F with CB:48097, X11SSH-TF with CB:48711 and OCP DeltaLake with CB:48672. Change-Id: I81dbbf5397b28ffa7537465c53332779245b39f6 Tested-by: Johnny Lin <Johnny_Lin@wiwynn.com> Tested-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: Patrick Rudolph <siro@das-labor.org> Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48583 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-12-14soc/intel/jasperlake: Drop unreferenced devicetree settingsAngel Pons
No mainboard uses these settings, nor does SoC code. Drop them. Change-Id: I40eba4128f1c5bafc7023b28dbaf40c0aca3f490 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/48570 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2020-12-05soc/intel/jasperlake: Add Acoustic noise mitigation configurationMaulik V Vaghela
This patch exposes acoustic noise mitigation related UPDs/configuration to be filled from devicetree. For each variant, we might have different values for various parameters. Filling it from devicetree will allow us to fill separate values for each board/variant. Note that since JasperLake only has one VR, we're only filling index 0 for slew rate and FastPkgCRampDisable. BUG=b:162192346 BRANCH=dedede TEST=code compilation is successful and values from devicetree are getting reflected in UPDs Change-Id: Id022f32acc3fd3fe62f78e3053bacdeb33727c02 Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47879 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2020-11-09soc/intel/jasperlake: Enable Intel FIVR RFI settingsMaulik V Vaghela
We already have RFI UPD settings to mitigate RFI noise issues in platform. These UPDs were not getting filled via devicetree but needed to be filled from fsp_params.c Exporting these UPDs to chip.h will allow OEM/ODMs to fill it directly from devicetree and also allow us to control it based on boards instead of keeping it common across SoCs. BUG=b:171683785 BRANCH=None TEST=Compilation works and we're able to fill UPD from devicetree.Value gets reflected in FSP UPDs. Change-Id: I495cd2294368e6b3035c48b9556a83418d5632de Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47286 Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-09soc/intel/*/chip: Remove unused devicetree entryPatrick Rudolph
InternalGfx isn't used so drop it. Change-Id: I12f424d8d883e065ef8d007e56a8bff41a7fae53 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47176 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-10-26mb/*,soc/intel: drop the obsolete dt option `speed_shift_enable`Michael Niewöhner
The dt option `speed_shift_enable` is obsolete now. Drop it. Change-Id: I5ac3b8efe37aedd442962234478fcdce675bf105 Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46462 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
2020-10-12soc/intel/jasperlake: Correct SaGv mappingAamir Bohra
Jasper Lake support 3 Memory train frequencies low. mid and high. Update the SaGv configuration accordingly. Change-Id: I366de1ea7cf41c56b2954b8032c69bfba81058e2 Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45195 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Meera Ravindranath <meera.ravindranath@intel.com>
2020-10-08soc/intel/jasperlake: Add VR Configuration settingsMeera Ravindranath
This CL fixes the CPU Throttling issue. BUG=b:167472333 TEST=Build and boot dedede and observe the slope and offset values getting updated in the fsp debug log Signed-off-by: Meera Ravindranath <meera.ravindranath@intel.com> Change-Id: I3fa32218040263f0abef8b9dd4c52efb31289fd7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45645 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2020-09-22soc/intel/jasperlake: Enable processor thermal control using PCI_DEVFNSumeet R Pawnikar
Enable processor thermal control using PCI dev path function instead of Device4Enable parameter in devicetree. This change removes the dependency on Device4Enable in devicetree. We can enable and disable this thermal control using on and off support with PCI device entry in devicetree. BRANCH=None BUG=None TEST=Built and tested on dedede board Change-Id: I0463236996ad001af506c9966840b27fe44d60d2 Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45454 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-09-14soc/intel/{cnl,icl,jsl,tgl}: Clean up chip.hSubrata Banik
Removed unused header files in chip.h Signed-off-by: Subrata Banik <subrata.banik@intel.com> Change-Id: Idb9b1ed23df3dbb9dad4d36651064c21a4d913fc Reviewed-on: https://review.coreboot.org/c/coreboot/+/45322 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2020-08-17soc/intel/jasperlake: Add FSP UPDs for minimum assertion widthsV Sowmya
Add the FSP UPDs for the chipset minimum assertion widths and Power cycle duration to the chip options which can be configured per mainboard. * PchPmSlpS3MinAssert: SLP_S3 Minimum Assertion Width Policy * PchPmSlpS4MinAssert: SLP_S4 Minimum Assertion Width Policy * PchPmSlpSusMinAssert: SLP_SUS Minimum Assertion Width Policy * PchPmSlpAMinAssert: SLP_A Minimum Assertion Width Policy * PchPmPwrCycDur: PCH PM Reset Power Cycle Duration * Check to avoid violating the PCH EDS recommendation for the PchPmPwrCycDur setting. BUG=b:159104150 Change-Id: I042e8e34b7dfda3bc21e5f2e6727cb7692ffc7f7 Signed-off-by: V Sowmya <v.sowmya@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43791 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com>
2020-07-23soc/intel/jasperlake: Add the SkipCpuReplacementCheck configurationV Sowmya
Add SkipCpuReplacementCheck config to control the FSPM UPD used for skipping the CPU replacementment check to avoid the forced MRC training for the platforms with soldered down SOC. BUG=b:160201335 TEST=Build and verify CSE Lite SKU on Waddleddo. Cq-Depend: chrome-internal:3142530 Change-Id: I63fcdab3686322406cf7c24fc26cbb535cc58c8d Signed-off-by: V Sowmya <v.sowmya@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/42453 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com> Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
2020-05-18jasperlake: update processor power limits configurationSumeet R Pawnikar
Update processor power limit configuration parameters based on common code base support for Intel Jasperlake SoC based platforms. BRANCH=None BUG=None TEST=Built for jasperlake system Change-Id: I9b725d041dcb8847f83ec103e58b9571b4c596ac Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41237 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-05-12soc/intel/jasperlake: Add SATA related UPDs configurationRonak Kanabar
This patch control SATA related UPDs based on the devicetree configuration as per each board's requirement. BUG=b:155595624 BRANCH=None TEST=Build, boot JSLRVP, Verified UPD values from FSP log Change-Id: I4f7e7508b8cd483508293ee3e7b760574d8f025f Signed-off-by: Ronak Kanabar <ronak.kanabar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41029 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-by: V Sowmya <v.sowmya@intel.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
2020-05-11treewide: Remove "this file is part of" linesPatrick Georgi
Stefan thinks they don't add value. Command used: sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool) The exceptions are for: - crossgcc (patch file) - gcov (imported from gcc) - elf.h (imported from GNU's libc) - nvramtool (more complicated header) The removed lines are: - fmt.Fprintln(f, "/* This file is part of the coreboot project. */") -# This file is part of a set of unofficial pre-commit hooks available -/* This file is part of coreboot */ -# This file is part of msrtool. -/* This file is part of msrtool. */ - * This file is part of ncurses, designed to be appended after curses.h.in -/* This file is part of pgtblgen. */ - * This file is part of the coreboot project. - /* This file is part of the coreboot project. */ -# This file is part of the coreboot project. -# This file is part of the coreboot project. -## This file is part of the coreboot project. --- This file is part of the coreboot project. -/* This file is part of the coreboot project */ -/* This file is part of the coreboot project. */ -;## This file is part of the coreboot project. -# This file is part of the coreboot project. It originated in the - * This file is part of the coreinfo project. -## This file is part of the coreinfo project. - * This file is part of the depthcharge project. -/* This file is part of the depthcharge project. */ -/* This file is part of the ectool project. */ - * This file is part of the GNU C Library. - * This file is part of the libpayload project. -## This file is part of the libpayload project. -/* This file is part of the Linux kernel. */ -## This file is part of the superiotool project. -/* This file is part of the superiotool project */ -/* This file is part of uio_usbdebug */ Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-05-01soc/intel/{jsl,tgl}: Rename PcdDebugInterfaceFlags macros for better ↵Subrata Banik
understanding BIT 1 -> DEBUG_INTERFACE_UART_8250IO BIT 4 -> DEBUG_INTERFACE_LPSS_SERIAL_IO Change-Id: I566b9dc82b2289af42e58705ebeee51179886f1f Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40904 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
2020-05-01soc/intel/jasperlake: Fill PcieRpClkReqDetect from devicetreeMeera Ravindranath
This CL adds support to fill PcieRpClkReqDetect UPD from devicetree. Filling this UPD will allow FSP to enable proper clksrc gpio configuration. BUG=None BRANCH=None TEST=Build and boot jslrvp with NVMe Change-Id: Iad0b394fea019223a5b98fff0cb4a2bd1d2a7bd7 Signed-off-by: Meera Ravindranath <meera.ravindranath@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40757 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: V Sowmya <v.sowmya@intel.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com>
2020-04-06soc/intel/jasperlake: Use SPDX for GPL-2.0-only filesAngel Pons
Done with sed and God Lines. Only done for C-like code for now. Change-Id: I2efdeb224c478995d393aa3eaac762c876832391 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40216 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Singer <felixsinger@posteo.net>
2020-03-28soc/intel/jasperlake: Remove Tiger Lake SoC code from Jasper LakeAamir Bohra
This is a follow-up patch to initial copy patch for Jasper Lake SoC. Remove all Tiger Lake specfic code from Jasper Lake SoC code. BUG=b:150217037 Change-Id: I44dc6bf55ca18a3f0c350f5c3e9fae2996958648 Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39824 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-03-28soc/intel/jasperlake: Add Jasper Lake SoC supportAamir Bohra
This is a copy patch from Tiger Lake SoC code. The only changes done on top of copy is changing below configs: 1. SOC_INTEL_TIGERLAKE -> SOC_INTEL_TIGERLAKE_COPY 2. SOC_INTEL_JASPERLAKE -> SOC_INTEL_JASPERLAKE_COPY 3. SOC_INTEL_TIGERLAKE_BASE -> SOC_INTEL_TIGERLAKE_BASE_COPY We started with initial assumption that JSL and TGL can co-exist. But now we see the SoC code in Tiger Lake is relying on too many compile-time directives to make two SoCs co-exist. Some of the differences are listed below: -> Kconfig: Multiple Kconfig options using if SOC_INTEL_{TIGERLAKE/JASPERLAKE} -> GPIO: GPIO communities have their own differences. This requires conditional checks in gpio.asl, gpio.c, gpio*.h, pmc.h and gpio.asl -> PCI IRQs: Set up differently for JSL and TGL -> PCIe: Number of Root ports differ. -> eMMC/SD: Only supported on JSL. -> USB: Number of USB port are different for JSL and TGL. -> Memory configuration parameters are different for JSL and TGL. -> FSP parameters for JSL and TGL are different. The split of JSL and TGL SoC code is planned as below: 1. Copy Tiger Lake SoC code as is, and change SoC Kconfig to avoid conflicts with current mainboard builds. 2. Clean up TGL code out of copy patch done in step 1. Make it JSL only code. The SoC config still kept as SOC_INTEL_JASPERLAKE_COPY. 3. Change JSL SOC Kconfig from SOC_INTEL_JASPERLAKE_COPY to SOC_INTEL_JASPERLAKE, dedede and jasperlake_rvp boards can bind to SoC code from soc/intel/jasperlake. This step establishes Jasper Lake as a separate SoC. 4. Clean up current JSL code from TGL code. This step establishes Tiger Lake as a separate SoC. BUG=b:150217037 Change-Id: I9c33f478a2f8ed5e2d8e7815821d13044d35d388 Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39823 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>