Commit Graph

609 Commits

Author SHA1 Message Date
Aseda Aboagye
52789bd7fd usb_port_power_smart: Add CDP/SDP only option.
For some boards, the control lines to the charging port controller are
all tied to a power rail.  In essence, this leaves the ILIM_SEL as the
only signal able to be controlled, which means that we only support
CDP/SDP.

This commit adds a new CONFIG_* option which describes this.

    CONFIG_USB_PORT_POWER_SMART_CDP_SDP_ONLY

Additionally, some cleanup is made to not always assume the number of
smart power ports.

BUG=None
BRANCH=None
TEST=make -j buildall

Change-Id: I080ccd67ffc20ccccf1e6b33a3cf9374a6b70ad6
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/634274
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-08-28 15:24:10 -07:00
li feng
dd1f41a03b core/minute-ia: add __image_size
For system using core/minute-ia, build will fail since __image_size is
not defined. If later this variable is used, should adjust its value
properly.

BUG=none
BRANCH=None
TEST=Build passed for Soarka ISH which uses core/minute-ia.

Change-Id: I8e179e0bac551a46d93ca10ba8b61b4ebade74fc
Signed-off-by: li feng <li1.feng@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/595151
Commit-Ready: Li1 Feng <li1.feng@intel.com>
Tested-by: Li1 Feng <li1.feng@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-24 23:06:40 -07:00
Randall Spangler
1029239bc1 g: Move chip pre-init to chip_pre_init()
Currently, chip/g uses jtag_pre_init() to do some chip
pre-initialization that isn't actually related to JTAG.  This has been
harmless, but it's currently the only chip which actually does "JTAG"
pre-init, and we'd like to get rid of that.  So, move that
functionality to a new optional chip_pre_init() function.

BUG=chromium:747629
BRANCH=cr50
TEST=make buildall
     boot cr50
     make all dis; confirm chip_pre_init() is called early in <main>

Change-Id: I3cae0747ab0c3cc974fce9f108947207b38e035f
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/629876
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-08-24 11:29:02 -07:00
Scott Collyer
0aa4bfe9a3 tcpc: Move board level TCPC init to happen in pd_task init
When the board level TCPC run as an init hook it will frequently
lead to an EC reset when we are trying to recovery a disconnected
battery, potentially even a reboot loop with the most unlucky
timing.

If we instead call it from the pd_task before tcpc_init is called
then the board init hook can stall the pd_task init until the
battery is out of disconnect mode, or giving up after 2 seconds
in case the battery never seems to recover.

This accomplishes two goals: ensure the PD chips are not reset until
the battery is out of disconnect and delay start of the pd_task
(and PD negotiation) until the battery is out of disconnect state.

This change was done in the Eve FW branch. Pulling it into TOT so it
can be used for other boards that have the same
issue. https://chromium-review.googlesource.com/c/592716. The change
to wait for the battery to be out of disconnect mode is in the board
specific board_tcpc_init() function and so will be in subsequent board
specific CLs.

BUG=b:63957122
BRANCH=none
TEST=manual Verify that 'make buildall' is successful.

Change-Id: I14c3dbb89cdc05fa9231fbe9db2e1de19fa941b6
Signed-off-by: Scott Collyer <scollyer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/627114
Commit-Ready: Scott Collyer <scollyer@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-23 21:17:22 -07:00
Scott Collyer
6d286d157c battery: Check physical battery presence before inhibiting power
In order to satisfy factory testing requirements we need to
boot a bare board with just an AC adapter without requiring
a power button.

However we also don't want to always allow booting of the
battery is present but cut-off (which will indicate BP_NO so
we can't use the existing battery_is_present function) or has
critically low level as it may not immediately boot.

To accomplish this add a function that allows the board to
specify a custom "hardware presence" for the battery that is
separate from the battery presence check.

This CL is taking a change done for Eve and pulling into TOT so it can
be used for other projects that have the same
requirements. https://chromium-review.googlesource.com/c/582544

BUG=b:63957122
BRANCH=none
TEST=manual

Change-Id: Ib1dc4f659adbf0eebd3dc8c3c61b39b8fa36cb4a
Signed-off-by: Scott Collyer <scollyer@google.com>
Reviewed-on: https://chromium-review.googlesource.com/627113
Commit-Ready: Scott Collyer <scollyer@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-23 21:17:22 -07:00
Patrick Georgi
f747f70816 coral: Add host command to fetch SKU ID
BUG=b:64468585
BRANCH=none
TEST=with the other sku-id related patches applied, coreboot obtains the
right SKU ID from EC

Change-Id: Ibf307c6e46152b4b09e94d8dca6d49ae863cb3ad
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/608370
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-15 06:51:58 -07:00
Divya Sasidharan
d4a8c130f7 usb_mux: Add driver support for PS8743 chip
Initial patch for supporting PS8743 USB Type-C
Redriving Switch for USB Host / DisplayPort.

BUG=b:64598680
BRANCH=glkrvp
TEST=On GLKRVP, verify mux setting is correct with
     Apple dongle (VGA + USB) and Pluggable adapter.

Change-Id: Ib45e328fc9ef6ccc410cef4550086be95ef17e8a
Signed-off-by: Divya Sasidharan <divya.s.sasidharan@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/506810
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-08-11 20:10:22 -07:00
Shawn Nematbakhsh
fe6a06fbf6 tpm: Add optional event logging
Allow TPM to log events in a circular buffer through tpm_log_event().
Logs can be retrieved through a new vendor command
VENDOR_CC_POP_LOG_ENTRY.

BUG=b:63760920
TEST=On eve, store TPM logs through 'logentry' cr50 console command,
verify logs are fetched correctly through 'trunks_send --pop_logentry'.
BRANCH=None

Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: Idbc405728c0ba68078447fb59717d6115830e3d8
Reviewed-on: https://chromium-review.googlesource.com/599352
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-08-10 22:47:24 -07:00
Nicolas Boichat
23b0d417f5 update_fw: Add support for touchpad update over virtual address
In the field, we want to update touchpad FW using the same USB
update protocol as the main EC FW.

To distinguish between EC FW update and touchpad FW update, we
use a virtual address, defined by CONFIG_TOUCHPAD_VIRTUAL_OFF,
that does not map to anything on the EC chip.

Also, this will allow us to verify hashes of each block of the
flashed touchpad firmware, so that we can ensure its integrity
before flashing it into the touchpad. A stub is implemented in
update_fw.c:contents_allowed.

BRANCH=none
BUG=b:63993173
TEST=With follow-up CLs, ./usb_updater2 -p 144.0_2.0.bin

Change-Id: I4de1d7d138fc01fe1552a4173c8ef208ecb834a7
Signed-off-by: Nicolas Boichat <drinkcat@google.com>
Reviewed-on: https://chromium-review.googlesource.com/593373
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Chun-ta Lin <itspeter@chromium.org>
2017-08-10 01:14:59 -07:00
Nick Vaccaro
e656b970e2 sensors: add bmi160 & kionix orientation driver
BRANCH=none
BUG=chromium:718919
TEST=make buildall -j works, orientation works when enabled on gru
and scarlet.

Change-Id: I16dcfa5d9dea39c082d98190fa1bb6e496168b17
Signed-off-by: Nick Vaccaro <nvaccaro@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/540124
Tested-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
2017-08-08 17:34:11 -07:00
Daisuke Nojiri
5f72f0a085 npcx: Define CONFIG_DATA_RAM_SIZE
This patch defines CONFIG_DATA_RAM_SIZE, which indicates the size
of the RAM used for data, thus can be marked as non-executable.

If it's not defined, it defaults to CONFIG_RAM_SIZE. Thus, other chips
are not affected.

BUG=b:36037354
BRANCH=none
TEST=buildall. Run 'sysjump disable' on Reef and verify mpu_protect_ram
is successful.

Change-Id: I54d74fd1dabff7e1013fff2542fd02c3646803d1
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/596518
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-07 19:29:13 -07:00
Nicolas Boichat
e525e1af8a usb_update: Add a way to fetch touchpad information
We'd like to know touchpad vendor/product id, as well as currently
running FW version. This CL does that by adding a new
UPDATE_EXTRA_CMD_TOUCHPAD_INFO command.

We also make the interface more generic by adding a CONFIG_TOUCHPAD
configuration option, even though we only support Elan touchpads
currently.

BRANCH=none
BUG=b:63418037
TEST=Flash hammer, ./usb_updater -t

Change-Id: Icce3c785eb3235bcc50b2ae7c0227ce11cbc9f2b
Signed-off-by: Nicolas Boichat <drinkcat@google.com>
Reviewed-on: https://chromium-review.googlesource.com/593000
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Chun-ta Lin <itspeter@chromium.org>
2017-08-03 00:32:05 -07:00
Shawn Nematbakhsh
ec99f39137 pd_log: Make PD logging more generic for general purpose logging
We can re-use our pd_log FIFO for other purposes, such as TPM logging.
Carve out event_log, a generic logging module which pd_log is compatible
with.

BUG=b:63760920
TEST=On kevin, verify PD logging is still functional and entries are
seen in dmesg.
BRANCH=None

Change-Id: I8e6ad6f93e9eebc676aca64652c60f81da471a94
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/597314
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-08-02 15:02:34 -07:00
Aseda Aboagye
553d00bdb4 driver: Move PI3USB9281 to bc12 directory.
The primary purpose of the Pericom PI3USB9281 is for BC1.2 detection.
Therefore, move the driver to the bc12/ directory.

Additonally, rename the config option to match.

  CONFIG_USB_SWITCH_PI3USB9281 => CONFIG_BC12_DETECT_PI3USB9281

BUG=None
BRANCH=None
TEST=`make -j buildall`

Change-Id: I02f17064c0625e62d6779f895e69899c24898f74
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/594710
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-31 17:08:28 -07:00
Aseda Aboagye
e67ca79456 driver: Add support for TI BQ24392.
The BQ24932 is a dual single-pole single-throw USB 2.0 high-speed
isolation switch with charger detection capabilities.  The device's
charger detection circuitry can support USB Battery Charging
Specification version 1.2 (BC1.2), Apple, TomTom, and other non-standard
chargers.

BUG=None
BRANCH=None
TEST=`make -j buildall`
TEST=Enable support for the BQ24392 on a board.  Verify that it
complies.

Change-Id: I82f426f1eedabdbb6b951a6ce0252135de3368db
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/592133
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-31 17:08:27 -07:00
Gwendal Grignou
1b25735b73 Add OTP support
One Time Programmable memory can be used to store permanent data like
serial numbers.
Reorganize the code to support writing serial number to OTP, in
addition to pstate (if using its own memory bank) or autogenerate from
unique id (hammer).

+ Add CONFIG_OTP to enable OTP code
+ Add CONFIG_SERIALNO_LEN to indicate the size of the serial number
string.  Currently set to 28, when USB serial number is needed.
+ Expose flash_read|write_pstate_serial and add otp_read|write_serail,
remove more generic flash_read|write_serial.
+ Make board_read|write_serial generic, declared outside of USB subsystem.

Priority order to read|write serial string:
- board definition (like hammer)
- pstate location, if stored in its private memory bank
- otp area
If none of these methods are available, a compilation error is raised.

BUG=chromium:746471
BRANCH=none
TEST=compile

Change-Id: I3d16125a6c0f424fb30e38123e63cf074b3cb2d3
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/580289
Reviewed-by: Nick Sanders <nsanders@chromium.org>
2017-07-28 17:45:13 -07:00
Randall Spangler
424000159e cr50: Disable CCD on board ID mismatch
If there is a board ID mismatch and rollback is not possible Cr50
firmware will enter a limited mode which only support Cr50 firmware
upgrade.  All other features must be disabled, because it is not
possible to know which features should be allowed on the mismatched
board.

See go/cr50-ccd-wp for more information.

BUG=b:62537474
BRANCH=cr50
TEST=manual with CR50_DEV=1 build, define CONFIG_CMD_CCDDISABLE
     ccdinfo --> state=opened
     ccddisable --> state=locked(disabled), all capabilities disabled
     ccdunlock --> access denied
     ccdopen --> access denied
     ccdreset --> access denied
     ccdpassword --> access denied
     ccdset --> access denied
     ccdoops
     ccdinfo --> state=opened, back to defaults

Change-Id: Idb66fb1f3d5106aa0c2cb6addf2404ea9942b0d6
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/590070
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
2017-07-27 19:56:22 -07:00
Philip Chen
19bd0659b3 battery/max17055: Add max17055 fuel gauge driver
BUG=chromium:736603
BRANCH=none
TEST=Follow the steps below
1) add MAX17055 config to Scarlet and build the code
2) hook up max17055 eval board and a single cell battery
3) battery command from ec console shows reasonable numbers
   for temperature, voltage, and charge percentage

Change-Id: I3f838ff92c591665e9f1d0a7ba636ff83d9b7612
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/578300
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-27 15:44:01 -07:00
Wei-Ning Huang
b9c8dcb9f6 flash: add flash selection support
Some chips require special operations before flash can be accessed
(read, write, erase), without it the flash operations could be
corrupted.  The chip that requires this should enable the
CONFIG_FLASH_SELECT_REQUIRED config, which exposes
EC_FLASH_INFO_SELECT_REQUIRED in flashinfo flags. Before any flash
operations is executed on the chip, EC_CMD_FLASH_SELECT should be issued
to notify the chip to prepare for the flash operations.

BRANCH=none
BUG=b:63685022
TEST=with depended CLs, touchpad interrupt should be disabled when
     flashrom is in progress.
CQ-DEPEND=CL:*416548

Change-Id: I96455adbe739d5f924edf382a2752404a7c5ad04
Signed-off-by: Wei-Ning Huang <wnhuang@google.com>
Reviewed-on: https://chromium-review.googlesource.com/582374
Commit-Ready: Wei-Ning Huang <wnhuang@chromium.org>
Tested-by: Wei-Ning Huang <wnhuang@chromium.org>
Reviewed-by: Wei-Ning Huang <wnhuang@chromium.org>
2017-07-27 04:22:42 -07:00
Randall Spangler
4809c70bbe cr50: Add case closed debugging V1 configuration
This adds the CCD configuration module, and the console commands to
control it.  It is not wired up to any of the CCD capabilities; that's
coming in the next CL.

Briefly:
* CCD configuration is persistently stored in nvmem_vars.  Use ccdinfo to
  print it.
* CCD can be Locked, Unlocked (some capabilities), or Opened
  (all capabilities), using the ccdlock / ccdunlock / ccdopen commands.
* CCD config can be restricted by setting a password via ccdpass.
* Individual config capabilities can be set via ccdset.  Some of those will
  be used to gate access to things like write protect and UARTs.  Others
  affect the requirements for ccdunlock / ccdopen (for example, is physical
  presenc required).
* The entire config can be reset via ccdreset.  If only unlocked, config
  that is restricted to Opened is not reset.
* If CR50_DEV=1, ccdoops will force-reset and open the config.

See go/cr50-ccd-wp for more information.

BUG=b:62537474
BRANCH=none
TEST=manual with CR50_DEV=1 build
	gpioget # make sure GPIO_BATT_PRES_L=0

	ccdlock # lock, because CR50_DEV=1 builds start unlocked

	ccdinfo # locked, flags=0, all capabilities default
	ccdpass # access denied (we're locked)
	ccdreset # access denied
	ccdset flashap always # access denied

	ccdunlock
	ccdinfo # unlocked
	ccdpass foo
	ccdinfo # flags=2 (password set when unlocked)
	ccdset flashap always # access denied
	ccdset uartectx unlesslocked
	ccdinfo # yes, uartectx permission changed
	ccdlock

	ccdunlock # fails without password
	ccdunlock bar # wrong password
	ccdunlock foo # busy
	(wait 3 sec)
	ccdunlock foo
	ccdreset
	ccdinfo # no password, flags 0, capabilities all default

	ccdopen # requires physical presence; tap power or use 'pp'
	ccdset uartectx unlesslocked
	ccdset batterybypasspp ifopened
	ccdpass baz
	ccdinfo # password set, flag 0, ccdset changes worked

	ccdunlock
	ccdreset
	ccdinfo # uartectx back to ifopened, password still set

	ccdopen baz # still requires physical presence
	ccdset opennolongpp always
	ccdlock
	ccdopen baz # no pp required
	ccdset unlocknoshortpp unlesslocked
	ccdlock
	ccdopen baz # short pp sequence required (3 taps)
	ccdlock
	ccdunlock baz # short pp sequence required
	ccdopen baz # pp not required
	ccdset unlocknoshortpp always
	ccdlock

	testlab open # access denied
	testlab enable # access denied
	ccdunlock baz
	testlab open # access denied
	testlab enable # access denied
	ccdopen baz
	testlab enable # requires short pp
	ccdinfo # flags 1

	ccdreset
	ccdinfo # no password, flags=1, caps all default
	ccdlock
	testlab open
	ccdinfo # opened
	testlab disable # requires short pp; let it time out
	ccdinfo # still opened, flags=1

	ccdlock
	ccdoops # backdoor in CR50_DEV images to force-reset CCD
	ccdinfo # opened, flags=0, all defaults (yes, oops wipes out testlab)

	ccdreset rma
	ccdinfo # flags = 0x400000, everything but Cr50FullConsole always
	ccdreset # back to flags=0, all default

Change-Id: I24e8d8f361874671e6e94f27492ae00db919bea9
Reviewed-on: https://chromium-review.googlesource.com/569439
Commit-Ready: Randall Spangler <rspangler@chromium.org>
Tested-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-07-20 15:00:40 -07:00
Aseda Aboagye
42411ace42 CNL: Don't build CNL in tests w/o chipset tasks.
When compiling target tests for a board that defines
CONFIG_CHIPSET_CANNONLAKE, the build would fail due to the chipset code
being built without a chipset task.  This commit removes the Cannonlake
chipset code when building a test that does not have a chipset task (and
use Cannonlake).

BUG=None
BRANCH=None
TEST=make -j BOARD=zoombini tests; verify that build succeeds.

Change-Id: I15a5729db64314a8d6566be879f7c356ffa95725
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/578316
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-20 12:26:31 -07:00
Randall Spangler
a6060f53ee cr50: Add physical presence state machine
This will be used as part of case closed debugging configuration.
Currently, this only adds the state machine, and a test command which
is available when CR50_DEV=1.  It also adds a new sleep mask flag for
physical presence detect, instead of oveloading FORCE_NO_DSLEEP.

The physical presence state machine supports both short (tap 5 times
in 15 seconds) and long (short, followed by 4 more taps 1-5 minutes
apart) sequences.  It will call a callback function at the end of the
sequence, so that multiple things can each request physical presence
in turn.  This will be used by ccdopen / ccdunlock / testlab commands
for CCD V1.

Eventually, CCD config will replace the unlock sequence handling in
wp.c.  But for now, we don't touch that.

See go/cr50-ccd-wp for more information.

BUG=b:62537474
BRANCH=none
TEST=manual
	Short sequence:
		pp short
		pp
		pp
		pp # See "Physical presence good"
	Timeout
		pp short
		pp # 15 sec later, get timeout error
	Long sequence:
		pp long
		pp
		pp
		pp
		(wait 2 sec)
		pp
		(wait 2 sec)
		pp # See "PP good"
	Long sequence, presses too fast:
		pp long
		pp
		pp
		pp
		pp # See "PP L too soon"
		(wait 2 sec)
		pp
		(wait 2 sec)
		pp # See "Physical presence good"
	Abort:
		pp short
		pp abort # See "Physical presence aborted"

Change-Id: I09da81ad11d328e7d7740c3fe838a5f67d7b8708
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/568796
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
2017-07-19 14:41:21 -07:00
Philip Chen
0cd2d2f103 charger/rt946x: add Richtek rt946x charger driver
BUG=chromium:736821
BRANCH=none
TEST=
1) add RT9467 config to Scarlet and build the code
2) hook up rt9467 eval board with dummy load
3) verify the i2c traffic: set voltage, set current, and
   get device id

Change-Id: Ie0dc2650711465b89eb4a5fbf69a326d6277b583
Signed-off-by: Philip Chen <philipchen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/565055
Commit-Ready: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-13 00:48:18 -07:00
Aseda Aboagye
ed5290019c board: Add initial support for zoombini.
This commit adds the initial board support for zoombini.

BUG=b:63508740
BRANCH=None
TEST=`make -j buildall`

Change-Id: I38a108d607ed1a33a0e5b588d4d463026919ac20
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/564800
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-11 13:13:03 -07:00
Aseda Aboagye
993a0991d6 driver: tcpm: ps8xxx: Add support for PS8805.
This commit adds support for the PS8805, another Parade Tech TCPC with
integrated superspeed muxes.  This also creates a generic Parade Tech
TCPC driver which supports the PS8xxx series.

The current supported TCPCs are:
  - PS8751
  - PS8805

BUG=b:63508740
BRANCH=None
TEST=`make -j buildall`

Change-Id: I78383af414996e0e8d6220985d286f95267136f8
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/564799
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-07-11 13:13:03 -07:00
Aseda Aboagye
7903342436 power: Add Cannonlake chipset support.
BUG=b:63508740
BRANCH=None
TEST=`make -j buildall`

Change-Id: I66e0e229c61c85af8f1f1c263e107e9990399e6a
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/564798
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-07-11 13:13:03 -07:00
Nicolas Boichat
74d09422e9 common/flash: Add option to set PSTATE to be locked by default
For hammer, we do not want to require finalization in factory, so
we just protect RO whenever WP GPIO is set.

BRANCH=none
BUG=b:63378217
TEST=Enable CONFIG_FLASH_PSTATE_LOCKED, flash hammer,
     check with flashinfo that RO protection matches WP status.

Change-Id: I902ee478c00a3c932277d2a7d0622c070654a5eb
Reviewed-on: https://chromium-review.googlesource.com/563217
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-07-08 03:49:53 -07:00
Randall Spangler
282765fdd4 common: Add RMA reset auth challenge-response crypto
RMA auth uses X25519 to generate a relatively small challenge and
response.

Currently, nothing calls the rma_auth code.  We'll need console and
TPM vendor commands to do so.

BUG=b:37952913
BRANCH=none
TEST=make buildall

Change-Id: Iec7f2d0e3dc8243f79b009ead16bb3ba9f1bef9d
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/544184
2017-06-30 16:02:50 -07:00
Duncan Laurie
bbb759ceaa Add support for reporting device events
In order to report specific wake events from differernt devices
add a host command that allows setting device event mask, and
triggering a host event when that device event is set.

This is done as a separate command and mask because we are running
out of host events, and it takes over the unused thermal overload
event that was never used in EC or BIOS.

The first use case for this is platforms that have AP wake events
that go to the EC, for instance devices that use Deep S3 and have
a limited set of wake pins. (such as Eve)

This allows the AP to determine the exact wake source for an event
so it can be logged and acted on by the AP if necessary.

BUG=b:36024430
BRANCH=eve
TEST=manual testing on eve with trackpad and dsp wake events

Change-Id: I48d94014c00dc1dad098ab96af0ddc7860229762
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://chromium-review.googlesource.com/555632
Reviewed-by: Scott Collyer <scollyer@chromium.org>
2017-06-30 03:08:42 -07:00
Vincent Palatin
3fdda8b6f1 Add U2F implementation
Add the common code to support FIDO U2F (Universal second factor
authentication) protocol implementation: the APDU parsing and standard
commands execution, plus a few non-standard flags and hooks.

The u2f.h header is the unmodified copy from the U2F v1.1
Specifications archive.

Mostly copied over from the cr52 code-base.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=cr50
BUG=b:35545754
TEST=with follow-up CLs, run U2FTest on Eve.
CQ-DEPEND=CL:*390230

Change-Id: I636d4a77ea69d69b5ab18a958e58ee6fcb2476bc
Reviewed-on: https://chromium-review.googlesource.com/518136
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-06-29 10:37:40 -07:00
Randall Spangler
2e3b42610b common: Add base32 encoding
Base32 encoding is used to turn the RMA reset binary
challenge/response into less-typo-prone text, at 5 bits per character.

BUG=b:37952913
BRANCH=none
TEST=make runtests

Change-Id: I474750a20204ba353cea1e91982aa03e8071c0c2
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/544177
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-06-28 23:23:41 -07:00
Daisuke Nojiri
3a4298ef48 npcx: Make system stay off after clean shutdown
This patch sets/clears RESET_FLAG_AP_OFF on S5<->S3 transitions.
It's set when the system gracefully shuts down and cleared when the
system boots up. The result is EC tries to go back to the
previous state upon AC plug-in on battery-less systems.

This is required for digital signage and kiosk.

This also reverts: CL 514209, 486946, and 486945.

BUG=b:37536389
BRANCH=none
TEST=Tested as follows:

A. Boot to S0
A.1. Unplug AC while system is in S0 then plug in - PASS
A.2. Unplug AC while system is in S3 then plug in - PASS
A.3. Press recovery+power in S0 - PASS
A.4. Press recovery+power in G3 - FAIL (To be fixed)
A.5. Execute reboot console command - PASS
A.6. Execute reboot OS command - PASS
A.7. Execute reboot console command in G3 - PASS

B. Boot to G3
B.1 Unplug AC while system is in G3 then plug in - PASS
B.2 Unplug AC after B.1 then plug in - PASS
B.3 Shutdown by power button on recovery screen then unplug
    plug in AC - PASS
B.4 Execute reboot ap-off console command - PASS
B.5 Execute shutdown command from OS then plug in AC - PASS

Change-Id: Iaa6f930585050fdd3511c711b449dff47525066d
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/517287
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-06-28 21:50:51 -07:00
Daisuke Nojiri
92b7baff54 system: Add simplified sysrq
On a keyboard-less, volume-button-less board, we support simplified
sysrq handling.

For Fizz, we use the recovery button to trigger sysrq event and
holding it down to trigger warm reset.

BUG=b:38418116,b:38417391
BRANCH=none
TEST=On Fizz, try
1. Press recovery button and release -> sysrq sent
2. Press and hold recovery button -> warm reset
3. Press recovery button and power button -> enter recovery mode

Change-Id: If8760319dba3df4545e9805b396ac89c241dae80
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/537817
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-06-23 22:56:49 -07:00
Shawn Nematbakhsh
b0dd82b39c cleanup: Remove big and pit boards
Remove big and pit boards along with several now-obsolete CONFIGs /
source files.

BUG=chromium:735109
TEST=`make buildall -j`
BRANCH=None
CQ-DEPEND=CL:544681

Change-Id: Ieb784bd36157fd1f6240cd19de6e6d12191a8097
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/540667
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-06-22 17:03:52 -07:00
Daisuke Nojiri
627f3a8ac2 KBL/SKL: Add wait between DSW_PWROK and PWRBTN
This patch adds wait between DSW_PWROK and PWRBTN assert. It is
required to be 95 msec or longer for Kaby Lake and Sky Lake.
Refer to the timing diagram for G3 to S0 on Sky Lake or Kaby Lake
platform design guide for details.

BUG=b:62584658
BRANCH=none
TEST=On Fizz, measured time between DSW_PWROK high and PWRBTN assert
for 1:AC plug-in, 2:recovery+power press, 3: reboot ec command.

Change-Id: I89a14ac9a49e20a332bd662d90be62f8ea23b003
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/534901
2017-06-19 21:03:29 -07:00
Furquan Shaikh
7e59da99a2 panic: Provide declarations for chip panic data backup/restore
Provide APIs that allow chips to implement their own version of
backing up/restoring panic data to persistent storage.

BUG=b:62076222
BRANCH=None
TEST=make -j buildall

Change-Id: Idda2d55703d4fe7e0a8d6305695fbf4e193b596b
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/530196
Reviewed-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
2017-06-15 15:17:17 -07:00
Nicolas Boichat
77e7913b69 usb_update: Add handler for pairing challenge command
Handle UPDATE_EXTRA_CMD_PAIR_CHALLENGE command, where the
lid sends a random x25519 public key, and nonce, and the base
replies with its own (stable) x25519 public key, and computes
a shared secret using its private key to verify its identity.

BRANCH=none
BUG=b:38486828
TEST=Flash hammer, ./usb_updater2 -c always reports the same
     device public key, and authenticator is correct.

Change-Id: Ida60ffa7476794ee92669951c740dbe35950fb9c
Reviewed-on: https://chromium-review.googlesource.com/532475
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-06-15 07:07:40 -07:00
Marius Schilder
03036903f2 cr50: accelerated sha512 option
Provides ~5.7x speedup (per console cmd sha512_bench).
Controlled by CONFIG_DCRYPTO_SHA512

TEST=console cmd sha512_test
BRANCH=none

Change-Id: Ibd0b6e8b5283a947d858905124b4221c63ac621f
Reviewed-on: https://chromium-review.googlesource.com/525056
Reviewed-by: Marius Schilder <mschilder@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Marius Schilder <mschilder@chromium.org>
Commit-Queue: Marius Schilder <mschilder@chromium.org>
Trybot-Ready: Marius Schilder <mschilder@chromium.org>
2017-06-14 04:34:31 +00:00
Vadim Bendebury
68079d94a6 g: show RW headers' Board ID fields in 'version' output
The contents of the board ID fields of the Cr50 image headers is an
important piece of information which determines if an image can run on
a particular H1 chip.

This patch adds this information to the output of the 'version'
command, printing both the contents of the fields of the RW images and
if the image would run with the current INFO1 board ID contents (Yes
or NO).

The board_id feature is in fact g chipset specific, this is why
board_id support files are being moved from the cr50 board scope to
the g chip scope.

BRANCH=cr50
BUG=b:35587387,b:35587053
TEST=observed expected output in the version command:
  > bid
  Board ID: 000000fa, flags 000000ff
  > vers
  Chip:    g cr50 B2-C
  Board:   0
  RO_A:  * 0.0.10/29d77172
  RO_B:    0.0.10/c2a3f8f9
  RW_A:  * 0.0.20/DBG/cr50_v1.1.6542-856c3aff4
  RW_B:    0.0.20/DBG/cr50_v1.1.6543-2c68a2630+
  BID A:   00000000:00000000:00000000 Yes
  BID B:   000000ea:0000fffc:000000ff  No
  Build:   0.0.20/DBG/cr50_v1.1.6542-856c3aff4
           tpm2:v0.0.289-cb2de5a
           cryptoc:v0.0.8-6283eee
           2017-06-09 15:34:19 vbendeb@eskimo.mtv.corp.google.com
  >

Change-Id: I5b283abf304a7408ca8f424407044fca238185e1
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/530033
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-06-13 21:23:59 -07:00
Mulin Chao
a08d004e97 npcx: clock: Add support for external 32kHz crystal osc.
In this CL, we add selecting LFCLK sources functionality for npcx7 ec
series. (Please notice not all of npcx7 ec series support this feature.)
Beside internal LFCLK source, ec also can choose the external 32kHz
crystal oscillator as LFCLK source for the specific application. We also
introduce a new definition, CONFIG_CLOCK_SRC_EXTERNAL, to switch this
feature in the board level driver.

This CL also adds:
1. LFCG register definitions in registers.h.
2. Change the order of each npcx modules by memory address.

BRANCH=none
BUG=none
TEST=Output LFCLK source through GPIO75. Compare with external 32kHz
crystal osc. on npcx7_evb and make sure the sources are the same.

Change-Id: I137146bf51ccb51266b9aac1e2e28bcea87dc4f5
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/520745
Reviewed-by: Randall Spangler <rspangler@chromium.org>
2017-06-09 21:44:06 -07:00
Nick Vaccaro
e9215ba711 common: allow report disabling of host events
Adds a mechanism that allows a board to disable interrupting the AP /
kernel when the status of any one of the EC_HOST_EVENTS included in
CONFIG_HOST_EVENT_REPORT_MASK changes state.  Default state enables
reporting of all events; a board can override this by defining
CONFIG_HOST_EVENT_REPORT_MASK in its board.h file.

NOTE: The host_set_events() and host_clear_events() routines no longer
interrupt the AP if none of the host events the AP is interested in
changed state.

BRANCH=none
BUG=chromium:637061
TEST=make buildall passes

Signed-off-by: Nick Vaccaro <nvaccaro@chromium.org>
Change-Id: I678fb9d9dab6890848b94b314efd711842b1fd48
Reviewed-on: https://chromium-review.googlesource.com/502078
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
2017-06-09 21:44:03 -07:00
philipchen
07c4c09b0b scarlet: modify power-on sequence
Merge PP900_USB_EN, PP900_PLL_EN, and PP900_PMU_EN.
Add a new config flag to enable different power-on sequences
on one SOC.

BUG=chrome-os-partner:62207, b:62307687
BRANCH=gru
TEST=build kevin/gru/scarlet

Change-Id: Iec3082384aa321636c59169b2bc55f773463f3d0
Reviewed-on: https://chromium-review.googlesource.com/434158
Reviewed-by: Shawn N <shawnn@chromium.org>
Commit-Queue: Philip Chen <philipchen@chromium.org>
Tested-by: Philip Chen <philipchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/524979
Commit-Ready: Philip Chen <philipchen@chromium.org>
Reviewed-by: Philip Chen <philipchen@chromium.org>
2017-06-08 16:39:37 -07:00
Nicolas Boichat
6d05a31a44 rollback: Include board-generated entropy when adding entropy
Mix in board-generated entropy with the externally provided one,
which should help make the per-device secret stronger.

BRANCH=none
BUG=b:38486828
TEST=reboot; rollbackaddent Hello => works fine when USB is connected,
     fails otherwise, as board-generated entropy relies on USB timing.

Change-Id: I314f44759c5f8b859913a748db95e9d42b5cdd11
Reviewed-on: https://chromium-review.googlesource.com/518609
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-06-06 08:52:16 -07:00
Aseda Aboagye
7dab0e853c chip: g: Add support for UART bit banging.
The UART block on the g chip has no functionality to adjust the parity.
Unfortunately, this feature is needed for certain applications.

This commit adds a UART bit bang driver with support for configuring the
baud rate and parity.  It currently only supports 8 data bits.

BUG=b:35648297
BRANCH=cr50
TEST=make -j buildall
TEST=With some other patches, successfully flash rowan EC at 9600 baud.

Change-Id: I86a160c0960e46b3a8bb1057518f625aefb7d81f
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/503473
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-06-05 14:49:09 -07:00
Chun-Ta Lin
d5c08763e1 usb_i2c: extend the protocol to support larger payload
The default USB packet has a maximum size of 64 bytes, however, we need
to support some USB over I2C write transaction that exceed this default.

To support so with protocol backwards-compatible in mind, we enable a
config option CONFIG_USB_I2C_MAX_WRITE_COUNT that will enlarge the USB
RX queue.

BRANCH=none
BUG=b:35587174
TEST=Complete presubmit test.
TEST=Manually update elan trackpad firmware with interrupt disabled.

Change-Id: Ia8983b036b7297f7ca673459ae34b7e5ecd2ee01
Reviewed-on: https://chromium-review.googlesource.com/513642
Commit-Ready: Chun-ta Lin <itspeter@chromium.org>
Tested-by: Chun-ta Lin <itspeter@chromium.org>
Reviewed-by: Chun-ta Lin <itspeter@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
2017-06-05 07:55:32 -07:00
Nicolas Boichat
5c9118b311 hammer: Add support for new key
There is a new keyboard matrix layout:
 - We can map the search key to both KSO1, KSI0 and KSO0, KSI3
   (old layout will only use the former, new layout will use the latter).
 - There is a new key on KSO0, KSI5, which we can map to HID page 0xffd1
   code 0x0018.

BRANCH=none
BUG=b:62004286
TEST=Flash hammer
     kbpress 0 3 1; kbpress 0 3 0 reports KEY_LEFTMETA as expected
     kbpress 0 5 1; kbpress 0 5 0 reports "BTN_0", which is probably
     incorrect, and needs to be fixed.

Change-Id: I9fb428805ff756b6d63f50cc5b061c6a0e1defbc
Reviewed-on: https://chromium-review.googlesource.com/512502
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
2017-06-02 23:59:05 -07:00
Gwendal Grignou
92ea78398b common: Add deferred erase support
Some device has large pages that take up to 2s to erase.
Add support to send a deferred erase command, that willi
be processed on HOOK task.

It can leave the other tasks (HOST_CMD) responsive.
If the whole EC can stall on flash erase, like the STM32F4 do,
at least the command FLASH_ERASE_GET_RESULT can be retried when it times
out.

BRANCH=none
TEST=Check with flashrom doing a loop of overwrites.
BUG=b:38018926

Change-Id: I8ce8e901172843d00aac0d8d59a84cbd13f58a10
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/510012
Reviewed-by: Alexandru M Stan <amstan@chromium.org>
2017-06-02 18:39:37 -07:00
Rong Chang
9ca4586129 common: Add support for flash with regions of different size
Add support to handle devices with flash regions of different sizes.

BRANCH=none
TEST=compile
BUG=b:38018926

Change-Id: I8f842abaa50de724df60dd7e19f9e97cb9660367
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/264031
Reviewed-by: Alexandru M Stan <amstan@chromium.org>
2017-06-02 16:59:36 -07:00
Vincent Palatin
5babc4f359 Add non-volatile flash counter
Add the implementation of a robust non-volatile incrementing counter
using 2 pages from the underlying flash.
It is used to implement the U2F functionality.

The main goal of the counter is providing a strictly incrementing value
whatever adverse events (malicious or not) happen as it is used to
prevent rollback attacks in the U2F protocol.
Given the limitation of the flash process: ie wear-out endurance and
2kB-page erase granularity only and possible isolated bit-flips
(accentuated by power losses), the counting is done by pulling down
several bits at a time from their erased state (1) to 0.

The counting is implemented this way with 2 pages called LOW and HIGH:
The LOW page is implemented in a strike style, with each "strike" zero-ing
out 4 bits at a time, meaning each word can be struck a total of 8
times.

Once the LOW page is completely struck, the HIGH page is incremented by 2.
The even increment is for the value, the odd increment is a guard signal
that the LOW page must be erased. So as an example:
If HIGH is 2, the LOW page would increment to 3, erase itself, and then
increment to 4.  If this process is interrupted for some reason (power loss
or user intervention) and the HIGH left at 3, on next resume, the HI page
will recognize something was left pending and erase again.

For a platform with 2-kB flash pages, it can count up to 8388608, then
it is stuck at 0xFFFFFFF indefinitely.

Mostly copied over from Marius code in cr52 code-base.

Signed-off-by: Marius Schilder <mschilder@google.com>
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=cr50
BUG=b:35545754
TEST=with follow-up CLs, run U2FTest on Eve

Change-Id: Idd0756078e3641c4a24f9c4ccf6611909bd5f00f
Reviewed-on: https://chromium-review.googlesource.com/518135
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Marius Schilder <mschilder@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
2017-06-02 10:38:57 -07:00
Marius Schilder
a25bcc8e94 cr50: add option to have no pinhold during deep sleep
On some boards it is not desirable or necessary to hold I/O pins steady.
Default behavior is unchanged; board configs can opt in to have no hold.

BRANCH=none
BUG=none
Change-Id: I944cdc65adbb35b96b95afe71dc89d1456af080c
Reviewed-on: https://chromium-review.googlesource.com/518343
Reviewed-by: Marius Schilder <mschilder@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: Marius Schilder <mschilder@chromium.org>
Trybot-Ready: Marius Schilder <mschilder@chromium.org>
Commit-Queue: Marius Schilder <mschilder@chromium.org>
2017-05-30 23:18:46 +00:00