diff options
| author | Simon Glass <sjg@chromium.org> | 2016-06-10 20:58:24 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-06-24 20:22:52 +0200 |
| commit | 786593248121951e460b21f97d18783b834c938a (patch) | |
| tree | 07291fd4d5e0c5938aeb57acadc5dddaae709afd /src/ec/google/chromeec/ec.c | |
| parent | 2cf99e1655ea2f10bcd5a0f494bbad4db4d46bee (diff) | |
| download | coreboot-786593248121951e460b21f97d18783b834c938a.tar.xz | |
ec/google: Add support for the EC 'get time' function
Some platforms have an RTC provided by the Chrome OS EC. Allow the EC to
implement rtc_get() so that this can be plumbed in.
BUG=chrome-os-partner:52220
BRANCH=none
TEST=(partial) with future commits, boot on gru and see output:
Date: 1970-01-17 (Saturday) Time: 1:42:44
Then reboot ~10 seconds later and see output:
Date: 1970-01-17 (Saturday) Time: 1:42:53
Change-Id: I3b38f23b259837cdd4bd99167961b7bd245683b3
Signed-off-by: Martin Roth <martinroth@chromium.org>
Original-Commit-Id: 4a4a26da37323c9ac33030c8f1510efae5ac2505
Original-Change-Id: Icaa381d32517dfed8d3b7927495b67a027d5ceea
Original-Signed-off-by: Simon Glass <sjg@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/351780
Original-Commit-Ready: Vadim Bendebury <vbendeb@chromium.org>
Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://review.coreboot.org/15302
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/ec/google/chromeec/ec.c')
| -rw-r--r-- | src/ec/google/chromeec/ec.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 87ab13acec..1a381d716e 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -22,6 +22,7 @@ #include <halt.h> #include <reset.h> #include <elog.h> +#include <rtc.h> #include <stdlib.h> #include "chip.h" @@ -142,6 +143,26 @@ int google_chromeec_check_feature(int feature) return r.flags[feature / 32] & EC_FEATURE_MASK_0(feature); } +#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_RTC) +int rtc_get(struct rtc_time *time) +{ + struct chromeec_command cmd; + struct ec_response_rtc r; + + cmd.cmd_code = EC_CMD_RTC_GET_VALUE; + cmd.cmd_version = 0; + cmd.cmd_size_in = 0; + cmd.cmd_data_out = &r; + cmd.cmd_size_out = sizeof(r); + cmd.cmd_dev_index = 0; + + if (google_chromeec_command(&cmd) != 0) + return -1; + + return rtc_to_tm(r.time, time); +} +#endif + #ifndef __SMM__ #ifdef __PRE_RAM__ void google_chromeec_check_ec_image(int expected_type) |