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MEC cannot access memmap-range data directly though LPC and instead must
access through its EMI unit.
BUG=chrome-os-partner:38224
TEST=Verify host command functionality on glower.
BRANCH=None
Change-Id: If98d425014a894ddeafad4268f92af5860878522
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 58ed3c50ab97ca1e172d5cdc00f4cd8e069e565c
Original-Change-Id: I32b897836d28ef4f3b3aa5f81b9023f2ceb629c8
Original-Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/263611
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/9910
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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Some platforms cannot access the 900h-9ffh region over the LPC bus, so
it's necessary to access memmap data over the ACPI cmd / data ports.
BUG=chrome-os-partner:38224
TEST=Manual on Samus. Define EC_GOOGLE_CHROMEEC_ACPI_MEMMAP. Verify
system boots cleanly and battery status is updated immediately on plug /
unplug.
BRANCH=None
Change-Id: Ifbed938668d3770750a44105e40fccb9babf62ed
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 14762261a6a32b2e96ee835e852b2c9537436ae3
Original-Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Change-Id: Idb516ff60b973d8833a41c45eac5765dafb8ec6d
Original-Reviewed-on: https://chromium-review.googlesource.com/262314
Original-Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: http://review.coreboot.org/9886
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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Some ECs may require a few microseconds to ramp up their clock after
being awaken by /CS assertion. This adds a Kconfig variable that can
be overridden at the mainboard-level which will force a delay between
asserting /CS and beginning a transfer.
BUG=chrome-os-partner:32223
BRANCH=none
TEST=verified ~100us delay using logic analyzer
Change-Id: I6d9b8beaa808252f008efb10e7448afdf96d2004
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: ec6b10e4e3f0362dea0dc8046cfd4e4615a42585
Original-Change-Id: Ibba356e4af18f80a7da73c96dadfda0f25251381
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/220242
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Alexandru Stan <amstan@chromium.org>
Reviewed-on: http://review.coreboot.org/9217
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
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Certain boards need to speak proto v3 over i2c. Leverage the
transport agnostic API to share the logic with other proto v3
impelementations.
BUG=chrome-os-partner:31148
BRANCH=None
TEST=Built and ran on ryu. Can talk to the EC successfully.
Change-Id: I1d0cd6907057af4ded3c4460193bbe1d897a1db7
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: cb9ac965ad04c9491f40fd9aa595176a28a467b3
Original-Change-Id: Ib699120fd232392e8caa0889c2bf40f4587a8a35
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/211139
Original-Reviewed-by: Stefan Reinauer <reinauer@google.com>
Original-Reviewed-by: Tom Warren <twarren@nvidia.com>
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/8828
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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SERIRQ_CONTINUOUS_MODE is specific feature of LPC busses.
This fixes a KCONFIG unmet dependency warning on ARM mainboards with
chromeec.
Change-Id: Iae61986219585dcb1124cf3b24fa32a8596d56c8
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/8665
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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For devices with ChromeOS EC on SPI bus, use the standard SPI driver interface
(see spi-generic.h) to exchange data.
Note: Only EC protocol v3 is supported for SPI bus.
Change-Id: Ia8dcdecd125a2bd7424d0c7560e046b6d6988a03
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3751
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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The Chrome EC still does not tolerate SERIRQ in quiet mode
and so the keyboard does not work properly.
Change-Id: I9ab052187c9926ce0e2c86b86dfe987dd6564c1b
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/3745
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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The default for this variable should be n, it should only depend on
EC_GOOGLE_CHROMEEC, and it should be (and is) explicitly enabled when
needed. This prevents it from being turned on when the EC bus is SPI.
Change-Id: Idc6651a764be4f055341a36b9b4a58990f050b0c
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3737
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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This used to contain the path for the EC include files, but
those files are included in coreboot now.
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Change-Id: I4fce9831c5e21b0a69a6295dbda2580e1ca83369
Reviewed-on: https://gerrit.chromium.org/gerrit/47606
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Stefan Reinauer <reinauer@google.com>
Tested-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/3057
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Google's Chrome EC can be installed on LPC or I2C bus, using different command
protocol. This commit adds I2C support for devices like Google/Snow.
Note: I2C interface cannot be automatically probed so the bus and chip number
must be explicitly set.
Verified by booting Google/Snow, with following console output:
Google Chrome EC: Hello got back 11223344 status (0)
Google Chrome EC: version:
ro: snow_v1.3.108-30f8374
rw: snow_v1.3.128-e35f60e
running image: 1
Change-Id: I8023eb96cf477755d277fd7991bdb7d9392f10f7
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3074
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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The Chrome EC can be connected by different types of bus like LPC / I2C / SPI,
and the current implementation is only for LPC.
To support other types, we must first isolate the LPC protocol stuff and add
configuration variable (EC_GOOGLE_CHROMEEC_LPC) to specify bus type.
Verified by building google/link (with chromeec) configuration successfully.
Change-Id: Ib2920d8d935bcc77a5394e818f69e9265e26e8a0
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/3068
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
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Google ChromeEC is an EC with completely open source firmware.
See https://gerrit.chromium.org/gerrit/gitweb?p=chromiumos/platform/ec.git;a=summary
for the EC firmware source code (aka more information about the ChromeEC)
This patch adds support for the ChromeEC on coreboot's side.
Great thanks to the ChromeEC team for this amazing work. It's another
important milestone towards a free and open firmware stack on modern
hardware.
Change-Id: Iace78af9d291791d2f5f80ccca1587b418738cec
Signed-off-by: Stefan Reinauer <reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/2481
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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