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/*
* This file is part of the coreboot project.
*
* Copyright 2018 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 <console/console.h>
#include <ec/acpi/ec.h>
#include <stdint.h>
#include <string.h>
#include "ec.h"
#include "commands.h"
int wilco_ec_get_info(enum get_ec_info_cmd type, char *info)
{
struct ec_response_get_ec_info rsp;
if (!info)
return -1;
if (wilco_ec_sendrecv(KB_EC_INFO, type, &rsp, sizeof(rsp)) < 0)
return -1;
/* Copy returned string */
strncpy(info, rsp.data, sizeof(rsp.data));
return 0;
}
void wilco_ec_print_all_info(void)
{
char info[EC_INFO_MAX_SIZE];
if (!wilco_ec_get_info(GET_EC_LABEL, info))
printk(BIOS_INFO, "EC Label : %s\n", info);
if (!wilco_ec_get_info(GET_EC_SVN_REV, info))
printk(BIOS_INFO, "EC Revision : %s\n", info);
if (!wilco_ec_get_info(GET_EC_MODEL_NO, info))
printk(BIOS_INFO, "EC Model Num : %s\n", info);
if (!wilco_ec_get_info(GET_EC_BUILD_DATE, info))
printk(BIOS_INFO, "EC Build Date : %s\n", info);
}
static int wilco_ec_get_power_smi(struct ec_pm_event_state *pm)
{
struct ec_response_power_smi {
uint8_t pm_event_1;
uint8_t pm_state_1;
uint8_t hotkey;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t pm_event_2;
uint8_t pm_state_6;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_SMI, &rsp, sizeof(rsp)) < 0)
return -1;
pm->event[0] = rsp.pm_event_1;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->hotkey = rsp.hotkey;
return 0;
}
static int wilco_ec_get_power_status(struct ec_pm_event_state *pm)
{
struct ec_response_power_status {
uint8_t pm_state_1;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t ac_type_lsb;
uint8_t pm_state_6;
uint8_t pm_event_2;
uint8_t ac_type_msb;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_STATUS, &rsp, sizeof(rsp)) < 0)
return -1;
pm->hotkey = 0;
pm->event[0] = 0;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->ac_type = rsp.ac_type_msb << 8 | rsp.ac_type_lsb;
return 0;
}
int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear)
{
if (clear)
return wilco_ec_get_power_smi(pm);
else
return wilco_ec_get_power_status(pm);
}
int wilco_ec_get_lid_state(void)
{
struct ec_pm_event_state pm;
if (wilco_ec_get_power_status(&pm) < 0)
return -1;
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 */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_SLP_EN, NULL, 0, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}
void wilco_ec_power_off(enum ec_power_off_reason reason)
{
/* EC does not respond to this command */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_POWER_OFF, &reason, 1, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}
int wilco_ec_radio_control(enum ec_radio radio, uint8_t state)
{
uint8_t radio_control[3] = { radio, RADIO_WRITE, state };
return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_RADIO_CONTROL,
radio_control, ARRAY_SIZE(radio_control),
NULL, 0);
}
int wilco_ec_change_wake(uint8_t source, enum ec_wake_change change)
{
uint8_t wake_source[3] = { change, source };
return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_ACPI_WAKEUP_CHANGE,
wake_source, ARRAY_SIZE(wake_source),
NULL, 0);
}
int wilco_ec_signed_fw(void)
{
ec_set_ports(CONFIG_EC_BASE_ACPI_COMMAND,
CONFIG_EC_BASE_ACPI_DATA);
return !!ec_read(EC_RAM_SIGNED_FW);
}
struct err_code_entry {
uint8_t post_code;
enum ec_err_code ec_err;
};
/*
* Any post codes not listed in the post_code_err_map[] use default.
*/
static const enum ec_err_code default_ec_err = DLED_ROM;
static const struct err_code_entry post_code_err_map[] = {
{ .post_code = POST_RAM_FAILURE, .ec_err = DLED_MEMORY, },
{ .post_code = POST_VIDEO_FAILURE, .ec_err = DLED_PANEL, },
};
/* Records the most recent post code during boot */
static uint8_t wilco_ec_saved_post_code;
void wilco_ec_save_post_code(uint8_t post_code)
{
wilco_ec_saved_post_code = post_code;
}
/* Send error code to the EC based on last saved post code */
void die_notify(void)
{
size_t i;
enum ec_err_code err_code = default_ec_err;
for (i = 0; i < ARRAY_SIZE(post_code_err_map); i++) {
if (post_code_err_map[i].post_code ==
wilco_ec_saved_post_code) {
err_code = post_code_err_map[i].ec_err;
break;
}
}
printk(BIOS_EMERG, "Fatal error: post_code 0x%02x, EC err 0x%02x\n",
wilco_ec_saved_post_code, err_code);
wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_ERR_CODE,
&err_code, 1, NULL, 0);
}
/*
* EC CPU ID data struct
* MBOX[2] = 0xFF
* MBOX[3] = CPUID_Low
* MBOX[4] = CPUID_Mid
* MBOX[5] = CPUID_High
* MBOX[6] = CPU_Core
* MBOX[7] = GPU_Core
* MBOX[8] = Reserved
*/
int wilco_ec_set_cpuid(uint32_t cpuid, uint8_t cpu_cores, uint8_t gpu_cores)
{
uint8_t cpu_id[7] = {0}, i;
cpu_id[0] = 0xff;
for (i = 1; i < 4; i++) {
cpu_id[i] = cpuid & 0xff;
cpuid = cpuid >> 8;
}
cpu_id[4] = cpu_cores;
cpu_id[5] = gpu_cores;
return wilco_ec_mailbox(WILCO_EC_MSG_DEFAULT, KB_CPU_ID, cpu_id,
ARRAY_SIZE(cpu_id), NULL, 0);
}
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