diff options
Diffstat (limited to 'src/ec/google')
| -rw-r--r-- | src/ec/google/wilco/Makefile.inc | 6 | ||||
| -rw-r--r-- | src/ec/google/wilco/boardid.c | 32 | ||||
| -rw-r--r-- | src/ec/google/wilco/commands.c | 6 | ||||
| -rw-r--r-- | src/ec/google/wilco/commands.h | 13 |
4 files changed, 54 insertions, 3 deletions
diff --git a/src/ec/google/wilco/Makefile.inc b/src/ec/google/wilco/Makefile.inc index fe8910c03f..3a7790c097 100644 --- a/src/ec/google/wilco/Makefile.inc +++ b/src/ec/google/wilco/Makefile.inc @@ -1,8 +1,8 @@ ifeq ($(CONFIG_EC_GOOGLE_WILCO),y) bootblock-y += bootblock.c -romstage-y += commands.c mailbox.c romstage.c -ramstage-y += chip.c commands.c mailbox.c -smm-y += commands.c mailbox.c smihandler.c +romstage-y += commands.c mailbox.c romstage.c boardid.c +ramstage-y += chip.c commands.c mailbox.c boardid.c +smm-y += commands.c mailbox.c smihandler.c boardid.c endif diff --git a/src/ec/google/wilco/boardid.c b/src/ec/google/wilco/boardid.c new file mode 100644 index 0000000000..e602e6e0c7 --- /dev/null +++ b/src/ec/google/wilco/boardid.c @@ -0,0 +1,32 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2019 Google LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <boardid.h> +#include "commands.h" + +uint32_t board_id(void) +{ + MAYBE_STATIC uint32_t id = BOARD_ID_INIT; + + if (id == BOARD_ID_INIT) { + uint8_t ec_id; + if (wilco_ec_get_board_id(&ec_id) <= 0) + id = BOARD_ID_UNKNOWN; + else + id = ec_id; + } + + return id; +} diff --git a/src/ec/google/wilco/commands.c b/src/ec/google/wilco/commands.c index da04e2759b..d0d572d569 100644 --- a/src/ec/google/wilco/commands.c +++ b/src/ec/google/wilco/commands.c @@ -135,6 +135,12 @@ int wilco_ec_get_lid_state(void) return !!(pm.state[0] & EC_PM1_LID_OPEN); } +int wilco_ec_get_board_id(uint8_t *id) +{ + return wilco_ec_mailbox(WILCO_EC_MSG_RAW, KB_BOARD_ID, + NULL, 0, id, sizeof(*id)); +} + void wilco_ec_slp_en(void) { /* EC does not respond to this command */ diff --git a/src/ec/google/wilco/commands.h b/src/ec/google/wilco/commands.h index 85f5feb792..3077eee578 100644 --- a/src/ec/google/wilco/commands.h +++ b/src/ec/google/wilco/commands.h @@ -38,6 +38,8 @@ enum { KB_EC_INFO = 0x38, /* Set ACPI mode on or off */ KB_ACPI = 0x3a, + /* Board ID */ + KB_BOARD_ID = 0x3d, /* Change ACPI wake up source */ KB_ACPI_WAKEUP_CHANGE = 0x4a, /* Manage the EC power button passthru to the host */ @@ -267,6 +269,17 @@ int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear); */ int wilco_ec_get_lid_state(void); +/** + * wilco_ec_get_board_id + * + * Retrieve the board ID value from the EC. + * @id: Pointer to variable to store the ID read from the EC. + * + * Returns number of bytes transferred from the EC + * Returns -1 if the EC command failed + */ +int wilco_ec_get_board_id(uint8_t *id); + enum ec_wake_change { WAKE_OFF = 0, WAKE_ON |