diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ec/google/chromeec/ec.c | 136 |
1 files changed, 132 insertions, 4 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 734c90c5db..21949d10df 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -892,8 +892,7 @@ int google_chromeec_set_usb_pd_role(u8 port, enum usb_pd_control_role role) #ifndef __SMM__ -static -int google_chromeec_hello(void) +static int google_chromeec_hello(void) { struct chromeec_command cec_cmd; struct ec_params_hello cmd_hello; @@ -912,6 +911,135 @@ int google_chromeec_hello(void) return cec_cmd.cmd_code; } +/* + * Convert a reset cause ID to human-readable string, providing total coverage + * of the 'cause' space. The returned string points to static storage and must + * not be free()ed. + */ +static const char *reset_cause_to_str(uint16_t cause) +{ + /* See also ChromiumOS EC include/chipset.h for details. */ + static const char * const reset_causes[] = { + "(reset unknown)", + "reset: board custom", + "reset: ap hang detected", + "reset: console command", + "reset: keyboard sysreset", + "reset: keyboard warm reboot", + "reset: debug warm reboot", + "reset: at AP's request", + "reset: during EC initialization", + }; + + static const size_t shutdown_cause_begin = 1 << 15; + static const char * const shutdown_causes[] = { + "shutdown: power failure", + "shutdown: during EC initialization", + "shutdown: board custom", + "shutdown: battery voltage startup inhibit", + "shutdown: power wait asserted", + "shutdown: critical battery", + "shutdown: by console command", + "shutdown: entering G3", + "shutdown: thermal", + "shutdown: power button", + }; + + if (cause < ARRAY_SIZE(reset_causes)) + return reset_causes[cause]; + + if (cause < shutdown_cause_begin) + return "(reset unknown)"; + + if (cause < shutdown_cause_begin + ARRAY_SIZE(shutdown_causes)) + return shutdown_causes[cause - shutdown_cause_begin]; + + return "(shutdown unknown)"; +} + +/* + * Copy the EC's information about resets of the AP and its own uptime for + * debugging purposes. + */ +static void google_chromeec_log_uptimeinfo(void) +{ + /* See also ChromiumOS EC include/system.h RESET_FLAG for details. */ + static const char * const reset_flag_strings[] = { + "other", + "reset-pin", + "brownout", + "power-on", + "watchdog", + "soft", + "hibernate", + "rtc-alarm", + "wake-pin", + "low-battery", + "sysjump", + "hard", + "ap-off", + "preserved", + "usb-resume", + "rdd", + "rbox", + "security" + }; + struct ec_response_uptime_info cmd_resp; + int i, flag, flag_count; + + struct chromeec_command get_uptime_cmd = { + .cmd_code = EC_CMD_GET_UPTIME_INFO, + .cmd_version = 0, + .cmd_data_in = NULL, + .cmd_size_in = 0, + .cmd_data_out = &cmd_resp, + .cmd_size_out = sizeof(cmd_resp), + .cmd_dev_index = 0, + }; + google_chromeec_command(&get_uptime_cmd); + if (get_uptime_cmd.cmd_code) { + /* + * Deliberately say nothing for EC's that don't support this + * command + */ + return; + } + + printk(BIOS_DEBUG, "Google Chrome EC uptime: %d.%03d seconds\n", + cmd_resp.time_since_ec_boot_ms / MSECS_PER_SEC, + cmd_resp.time_since_ec_boot_ms % MSECS_PER_SEC); + + printk(BIOS_DEBUG, "Google Chrome AP resets since EC boot: %d\n", + cmd_resp.ap_resets_since_ec_boot); + + printk(BIOS_DEBUG, "Google Chrome most recent AP reset causes:\n"); + for (i = 0; i != ARRAY_SIZE(cmd_resp.recent_ap_reset); ++i) { + if (cmd_resp.recent_ap_reset[i].reset_time_ms == 0) + continue; + + printk(BIOS_DEBUG, "\t%d.%03d: %d %s\n", + cmd_resp.recent_ap_reset[i].reset_time_ms / + MSECS_PER_SEC, + cmd_resp.recent_ap_reset[i].reset_time_ms % + MSECS_PER_SEC, + cmd_resp.recent_ap_reset[i].reset_cause, + reset_cause_to_str( + cmd_resp.recent_ap_reset[i].reset_cause)); + } + + printk(BIOS_DEBUG, "Google Chrome EC reset flags at last EC boot: "); + flag_count = 0; + for (flag = 0; flag != ARRAY_SIZE(reset_flag_strings); ++flag) { + if ((cmd_resp.ec_reset_flags & (1 << flag)) != 0) { + if (flag_count) + printk(BIOS_DEBUG, " | "); + printk(BIOS_DEBUG, reset_flag_strings[flag]); + flag_count++; + } + } + printk(BIOS_DEBUG, "\n"); +} + static int ec_image_type; /* Cached EC image type (ro or rw). */ void google_chromeec_init(void) @@ -919,8 +1047,6 @@ void google_chromeec_init(void) struct chromeec_command cec_cmd; struct ec_response_get_version cec_resp = {{0}}; - printk(BIOS_DEBUG, "Google Chrome EC: Initializing keyboard.\n"); - google_chromeec_hello(); cec_cmd.cmd_code = EC_CMD_GET_VERSION; @@ -942,6 +1068,8 @@ void google_chromeec_init(void) cec_resp.current_image); ec_image_type = cec_resp.current_image; } + + google_chromeec_log_uptimeinfo(); } int google_ec_running_ro(void) |