130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
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/* Copyright 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Chipset common code for Chrome EC */
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#include "chipset.h"
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#include "common.h"
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#include "console.h"
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#include "ec_commands.h"
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#include "host_command.h"
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#include "link_defs.h"
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#include "system.h"
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#include "task.h"
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#include "timer.h"
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#include "util.h"
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/* Console output macros */
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#define CPUTS(outstr) cputs(CC_CHIPSET, outstr)
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#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args)
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/*****************************************************************************/
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/* Console commands */
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#ifdef CONFIG_CMD_POWER_AP
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static int command_apreset(int argc, char **argv)
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{
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/* Force the chipset to reset */
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ccprintf("Issuing AP reset...\n");
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chipset_reset(CHIPSET_RESET_CONSOLE_CMD);
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(apreset, command_apreset,
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NULL,
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"Issue AP reset");
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static int command_apshutdown(int argc, char **argv)
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{
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chipset_force_shutdown(CHIPSET_SHUTDOWN_CONSOLE_CMD);
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(apshutdown, command_apshutdown,
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NULL,
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"Force AP shutdown");
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#endif
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#ifdef CONFIG_HOSTCMD_AP_RESET
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static enum ec_status host_command_apreset(struct host_cmd_handler_args *args)
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{
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/* Force the chipset to reset */
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chipset_reset(CHIPSET_RESET_HOST_CMD);
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return EC_RES_SUCCESS;
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}
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DECLARE_HOST_COMMAND(EC_CMD_AP_RESET,
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host_command_apreset,
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EC_VER_MASK(0));
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#endif
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#ifdef CONFIG_CMD_AP_RESET_LOG
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static struct mutex reset_log_mutex;
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static int next_reset_log __preserved_logs(next_reset_log);
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static uint32_t ap_resets_since_ec_boot;
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/* keep reset_logs size a power of 2 */
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static struct ap_reset_log_entry
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reset_logs[4] __preserved_logs(reset_logs);
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static int reset_log_checksum __preserved_logs(reset_log_checksum);
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/* Calculate reset log checksum */
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static int calc_reset_log_checksum(void)
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{
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return next_reset_log ^ reset_logs[next_reset_log].reset_cause;
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}
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/* Initialize reset logs and next reset log */
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void init_reset_log(void)
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{
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if (next_reset_log < 0 || next_reset_log >= ARRAY_SIZE(reset_logs) ||
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reset_log_checksum != calc_reset_log_checksum()) {
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reset_log_checksum = 0;
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next_reset_log = 0;
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memset(&reset_logs, 0, sizeof(reset_logs));
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}
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}
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void report_ap_reset(enum chipset_shutdown_reason reason)
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{
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timestamp_t now = get_time();
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uint32_t now_ms = (uint32_t)(now.val / MSEC);
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mutex_lock(&reset_log_mutex);
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reset_logs[next_reset_log].reset_cause = reason;
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reset_logs[next_reset_log++].reset_time_ms = now_ms;
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next_reset_log &= ARRAY_SIZE(reset_logs) - 1;
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ap_resets_since_ec_boot++;
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mutex_unlock(&reset_log_mutex);
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/* Update checksum */
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reset_log_checksum = calc_reset_log_checksum();
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}
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test_mockable enum ec_error_list
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get_ap_reset_stats(struct ap_reset_log_entry *reset_log_entries,
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size_t num_reset_log_entries, uint32_t *resets_since_ec_boot)
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{
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size_t log_address;
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size_t i;
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if (reset_log_entries == NULL || resets_since_ec_boot == NULL)
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return EC_ERROR_INVAL;
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mutex_lock(&reset_log_mutex);
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*resets_since_ec_boot = ap_resets_since_ec_boot;
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for (i = 0;
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i != ARRAY_SIZE(reset_logs) && i != num_reset_log_entries;
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++i) {
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log_address = (next_reset_log + i) &
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(ARRAY_SIZE(reset_logs) - 1);
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reset_log_entries[i] = reset_logs[log_address];
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}
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mutex_unlock(&reset_log_mutex);
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return EC_SUCCESS;
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}
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#endif /* !CONFIG_AP_RESET_LOG */
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