From e2cea4f4582dad7f202a3f6d4fc884b01ec1d52d Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Tue, 1 Dec 2015 19:14:09 -0800 Subject: google/chromeec: Add temporary storage interface Add support functions for the Chrome EC temporary storage interface. BUG=chrome-os-partner:46049 BRANCH=none TEST=tested on glados with modified coreboot Change-Id: Id2bc46df9cb2d82b15e3309e78d07407a622b6f0 Signed-off-by: Patrick Georgi Original-Commit-Id: a7e6f693666b162e11eb0611715f10a8f465ad88 Original-Change-Id: Ieefabfc5bcb9d8a5064f0da967c46d0f377ca320 Original-Signed-off-by: Duncan Laurie Original-Reviewed-on: https://chromium-review.googlesource.com/315217 Original-Commit-Ready: Aaron Durbin Original-Tested-by: Aaron Durbin Original-Reviewed-by: Aaron Durbin Reviewed-on: https://review.coreboot.org/13572 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/ec/google/chromeec/ec.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'src/ec/google/chromeec/ec.c') diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 5db387009e..87ab13acec 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -121,6 +121,27 @@ int google_chromeec_clear_events_b(u32 mask) EC_CMD_HOST_EVENT_CLEAR_B, mask); } +int google_chromeec_check_feature(int feature) +{ + struct chromeec_command cmd; + struct ec_response_get_features r; + + cmd.cmd_code = EC_CMD_GET_FEATURES; + 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; + + if (feature >= 8 * sizeof(r.flags)) + return -1; + + return r.flags[feature / 32] & EC_FEATURE_MASK_0(feature); +} + #ifndef __SMM__ #ifdef __PRE_RAM__ void google_chromeec_check_ec_image(int expected_type) -- cgit v1.2.3