ec: Support logging system boot time info

This CL add support logging system boot time and hostcommand to get
boot time info.
EC logs elapsed time (in micro second) info since boot for different
signal events,that can be used to calculate system boot time in cold
boot and warm boot scenarios.

Below are the events when EC logs time info

 ARAIL		EC turns on A-RAIL
 RSMRST		EC releases RSMRST#
 ESPIRST	ESPIRST received
 PLTRST_LOW	PLTRST# asserted
 PLTRST_HIGH	PLTRST# deasserted
 EC_CUR_TIME	EC current time
 cnt		increments on every warm reboot and reset to 0 on
 		cold reboot

BUG=b:249163956
BRANCH=none
TEST='ectool boottime' AP console command is used to fetch data
     'reboot' on AP console to trigger warm reboot
     'apshutdown' on EC console to trigger cold reboot

Signed-off-by: Rajesh Kumar <rajesh3.kumar@intel.com>
Change-Id: I15fedbde252e0452270ef0e3fd4391bf624169f1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3794612
Reviewed-by: Boris Mittelberg <bmbm@google.com>
Code-Coverage: Zoss <zoss-cl-coverage@prod.google.com>

3 files changed, 17 insertions, 2 deletions

diff --git a/chip/it83xx/espi.c b/chip/it83xx/espi.c
index bf52b87404..f59f3728bf 100644
--- a/chip/it83xx/espi.c
+++ b/chip/it83xx/espi.c
@@ -13,6 +13,7 @@
 #include "power.h"
 #include "registers.h"
 #include "system.h"
+#include "system_boot_time.h"
 #include "task.h"
 #include "uart.h"
 #include "util.h"
@@ -273,6 +274,7 @@ static void espi_vw_idx7_isr(uint8_t flag_changed, uint8_t vw_evt)
 static void espi_chipset_reset(void)
 {
 	hook_notify(HOOK_CHIPSET_RESET);
+	update_ap_boot_time(ESPIRST);
 }
 DECLARE_DEFERRED(espi_chipset_reset);
 #endif
@@ -284,12 +286,14 @@ static void espi_vw_idx3_isr(uint8_t flag_changed, uint8_t vw_evt)
 
 		if (pltrst) {
 			espi_vw_host_startup();
+			update_ap_boot_time(PLTRST_HIGH);
 		} else {
 #ifdef CONFIG_CHIPSET_RESET_HOOK
 			hook_call_deferred(&espi_chipset_reset_data, MSEC);
 #endif
 			/* Store port 80 reset event */
 			port_80_write(PORT_80_EVENT_RESET);
+			update_ap_boot_time(PLTRST_LOW);
 		}
 
 		CPRINTS("VW PLTRST_L %sasserted", pltrst ? "de" : "");
diff --git a/chip/mchp/espi.c b/chip/mchp/espi.c
index 53d17e90b2..dce81448d7 100644
--- a/chip/mchp/espi.c
+++ b/chip/mchp/espi.c
@@ -20,6 +20,7 @@
 #include "power.h"
 #include "registers.h"
 #include "system.h"
+#include "system_boot_time.h"
 #include "task.h"
 #include "tfdp_chip.h"
 #include "timer.h"
@@ -833,6 +834,7 @@ int espi_vw_disable_wire_int(enum espi_vw_signal signal)
 static void espi_chipset_reset(void)
 {
 	hook_notify(HOOK_CHIPSET_RESET);
+	update_ap_boot_time(ESPIRST);
 }
 DECLARE_DEFERRED(espi_chipset_reset);
 #endif
@@ -867,12 +869,15 @@ void espi_vw_evt_pltrst_n(uint32_t wire_state, uint32_t bpos)
 {
 	CPRINTS("VW PLTRST#: %d", wire_state);
 
-	if (wire_state) /* Platform Reset de-assertion */
+	if (wire_state) { /* Platform Reset de-assertion */
 		espi_host_init();
-	else /* assertion */
+		update_ap_boot_time(PLTRST_HIGH);
+	} else { /* assertion */
 #ifdef CONFIG_CHIPSET_RESET_HOOK
 		hook_call_deferred(&espi_chipset_reset_data, MSEC);
 #endif
+		update_ap_boot_time(PLTRST_LOW);
+	}
 }
 
 /* OOB Reset Warn event handler */
diff --git a/chip/npcx/espi.c b/chip/npcx/espi.c
index e73d04e988..3bed4f4564 100644
--- a/chip/npcx/espi.c
+++ b/chip/npcx/espi.c
@@ -13,6 +13,7 @@
 #include "power.h"
 #include "registers.h"
 #include "system.h"
+#include "system_boot_time.h"
 #include "task.h"
 #include "timer.h"
 #include "uart.h"
@@ -459,11 +460,14 @@ void espi_vw_evt_pltrst(void)
 		/* Enable eSPI peripheral channel */
 		SET_BIT(NPCX_ESPICFG, NPCX_ESPICFG_PCHANEN);
 #endif
+		update_ap_boot_time(PLTRST_HIGH);
+
 	} else {
 		/* PLTRST# asserted */
 #ifdef CONFIG_CHIPSET_RESET_HOOK
 		hook_call_deferred(&espi_chipset_reset_data, MSEC);
 #endif
+		update_ap_boot_time(PLTRST_LOW);
 	}
 }
 
@@ -524,6 +528,8 @@ void espi_espirst_handler(void)
 	/* Clear pending bit of WUI */
 	SET_BIT(NPCX_WKPCL(MIWU_TABLE_0, MIWU_GROUP_5), 5);
 
+	update_ap_boot_time(ESPIRST);
+
 	CPRINTS("eSPI RST issued!");
 }