From 2967e909007b2d312b405419313f19cf60d00255 Mon Sep 17 00:00:00 2001
From: caisking <caiyqm@qq.com>
Date: Mon, 27 Apr 2026 16:13:33 +0800
Subject: [PATCH] =?utf8?q?=E5=A2=9E=E5=8A=A0=E6=97=B6=E9=97=B4=E9=87=8D?=
 =?utf8?q?=E7=BD=AE=E9=97=AE=E9=A2=98=E7=9A=84=E5=AE=9A=E4=BD=8D?=
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---
 .../flashboot/brandy/boot_ulp/boot_ulp.c      | 61 +++++++++++++++----
 .../chips/brandy/exception/chip_system_time.c | 17 +++++-
 code/sdk/zhihui/utils/custom_utils.c          | 19 +++++-
 3 files changed, 83 insertions(+), 14 deletions(-)

diff --git a/code/sdk/bootloader/flashboot/brandy/boot_ulp/boot_ulp.c b/code/sdk/bootloader/flashboot/brandy/boot_ulp/boot_ulp.c
index 48e79357e..bfe411af9 100644
--- a/code/sdk/bootloader/flashboot/brandy/boot_ulp/boot_ulp.c
+++ b/code/sdk/bootloader/flashboot/brandy/boot_ulp/boot_ulp.c
@@ -11,6 +11,7 @@
 #include "errcode.h"
 #include "chip_io.h"
 #include "clock_calibration.h"
+#include "debug_print.h"
 
 
 bool  g_startup_finish_flag = false;
@@ -27,18 +28,56 @@ static uint32_t g_clock_ulp_ssb = 3276800;
 
 calendar_regs_t *g_calendar_reg = SSB_CALENDAR_BASE_ADDR;
 
-static uint64_t uapi_ulp_systick_get_count(void)
-{
-    uint64_t count = 0;
-    writew(ULP_LOCK_REG, 0x1);
-    count = (uint64_t)readw(ULP_SYSTICK_VAL3) << 48U;
-    count |= (uint64_t)readw(ULP_SYSTICK_VAL2) << 32U;
-    count |= (uint64_t)readw(ULP_SYSTICK_VAL1) << 16U;
-    count |= (uint64_t)readw(ULP_SYSTICK_VAL0);
-    writew(ULP_LOCK_REG, 0x0);
-    return count;
-}
+#if 0
+    static uint64_t uapi_ulp_systick_get_count(void)
+    {
+        uint64_t count = 0;
+        writew(ULP_LOCK_REG, 0x1);
+        count = (uint64_t)readw(ULP_SYSTICK_VAL3) << 48U;
+        count |= (uint64_t)readw(ULP_SYSTICK_VAL2) << 32U;
+        count |= (uint64_t)readw(ULP_SYSTICK_VAL1) << 16U;
+        count |= (uint64_t)readw(ULP_SYSTICK_VAL0);
+        writew(ULP_LOCK_REG, 0x0);
+        return count;
+    }
+#else
+    static uint64_t uapi_ulp_systick_get_count(void)
+    {
+        uint64_t count = 0;
+        static uint64_t s_last_count = 0;
+        uint16_t lock_before = readw(ULP_LOCK_REG);
+        uint16_t lock_after_set = (uint16_t)(lock_before | 0x1);
+        writew(ULP_LOCK_REG, lock_after_set);
+
+        uint16_t v0 = readw(ULP_SYSTICK_VAL0);
+        uint16_t v1 = readw(ULP_SYSTICK_VAL1);
+        uint16_t v2 = readw(ULP_SYSTICK_VAL2);
+        uint16_t v3 = readw(ULP_SYSTICK_VAL3);
+
+        count = ((uint64_t)v3 << 48U) |
+                ((uint64_t)v2 << 32U) |
+                ((uint64_t)v1 << 16U) |
+                ((uint64_t)v0);
+
+        uint16_t lock_before_restore = readw(ULP_LOCK_REG);
+        writew(ULP_LOCK_REG, lock_before);
+        uint16_t lock_after_restore = readw(ULP_LOCK_REG);
+
+        PRINT("[ULP_CNT][boot] lock_before=0x%04x lock_set=0x%04x lock_before_restore=0x%04x lock_after_restore=0x%04x "
+              "v3=0x%04x v2=0x%04x v1=0x%04x v0=0x%04x count=0x%016llx (%llu)\r\n",
+              lock_before, lock_after_set, lock_before_restore, lock_after_restore,
+              v3, v2, v1, v0,
+              (unsigned long long)count, (unsigned long long)count);
+
+        if (s_last_count != 0 && count < s_last_count) {
+            PRINT("[ULP_CNT][WARN][boot] rollback! last=0x%016llx now=0x%016llx\r\n",
+                  (unsigned long long)s_last_count, (unsigned long long)count);
+        }
+        s_last_count = count;
 
+        return count;
+    }
+#endif
 static uint32_t uapi_ulp_systick_soc_calibration(void)
 {
     unsigned int irq_sts = osal_irq_lock();
diff --git a/code/sdk/middleware/chips/brandy/exception/chip_system_time.c b/code/sdk/middleware/chips/brandy/exception/chip_system_time.c
index e3ce9be13..ad7e09309 100644
--- a/code/sdk/middleware/chips/brandy/exception/chip_system_time.c
+++ b/code/sdk/middleware/chips/brandy/exception/chip_system_time.c
@@ -17,6 +17,7 @@
 #define TZ_ADDRESS              0x5702C014
 #define MAX_TIMEZONE_HOURS      24
 #define TIME_MAX                64
+#define TIME_FLOW_PREFIX        "[TIME_FLOW][时间链路] "
 
 void print_time(calendar_t *date)
 {
@@ -59,6 +60,8 @@ void save_time(void)
 {
     uint64_t time_sec = get_local_timestamp();
     time_sec = time_sec * MSEC_PER_SEC;
+    printf(TIME_FLOW_PREFIX "save_time: local_sec=%u, write_calendar_ms=%llu\r\n",
+        (uint32_t)get_local_timestamp(), (unsigned long long)time_sec);
     uapi_calendar_set_timestamp(time_sec);
 }
 
@@ -102,7 +105,11 @@ void restore_time(void)
     uapi_calendar_get_timestamp(&sec);
     printf("callendar timestamp = %lld \r\n", sec);
     sec = sec / MSEC_PER_SEC;
+    printf(TIME_FLOW_PREFIX "restore_time: read_calendar_sec=%llu, timezone_quarters=%u\r\n",
+        (unsigned long long)sec, uapi_get_timezone());
     sync_time(sec, uapi_get_timezone());
+    printf(TIME_FLOW_PREFIX "restore_time: after_sync utc_now=%u, local_now=%u\r\n",
+        get_current_timestamp(), get_local_timestamp());
 }
 uint32_t sync_time_utc(uint32_t timestamp, uint32_t timezone_quarters)
 {
@@ -130,7 +137,10 @@ uint32_t sync_time_utc(uint32_t timestamp, uint32_t timezone_quarters)
     tv.tv_usec = 0;
     tzone.tz_dsttime = 0;
     tzone.tz_minuteswest = timezone_quarters * MINUTES_PER_QUARTER;
-    return settimeofday(&tv, &tzone);
+    uint32_t ret = settimeofday(&tv, &tzone);
+    printf(TIME_FLOW_PREFIX "sync_time_utc: ret=0x%x, input_utc=%u, zone_quarters=%u, utc_now=%u, local_now=%u\r\n",
+        ret, timestamp, timezone_quarters, get_current_timestamp(), get_local_timestamp());
+    return ret;
 }
 
 uint32_t sync_time(uint32_t timestamp, uint32_t timezone_quarters)
@@ -154,7 +164,10 @@ uint32_t sync_time(uint32_t timestamp, uint32_t timezone_quarters)
     tv.tv_usec = 0;
     tzone.tz_dsttime = 0;
     tzone.tz_minuteswest = timezone_quarters * MINUTES_PER_QUARTER;
-    return settimeofday(&tv, &tzone);
+    uint32_t ret = settimeofday(&tv, &tzone);
+    printf(TIME_FLOW_PREFIX "sync_time: ret=0x%x, input_local=%u, zone_quarters=%u, utc_now=%u, local_now=%u\r\n",
+        ret, timestamp, timezone_quarters, get_current_timestamp(), get_local_timestamp());
+    return ret;
 }
 
 // void test_bandy_time(uint32_t time)
diff --git a/code/sdk/zhihui/utils/custom_utils.c b/code/sdk/zhihui/utils/custom_utils.c
index b3e1f9c73..6a7728efd 100644
--- a/code/sdk/zhihui/utils/custom_utils.c
+++ b/code/sdk/zhihui/utils/custom_utils.c
@@ -946,6 +946,7 @@ errcode_t uaip_cmd_update_request(void)
 /* Use lwip time functions instead of musl */
 #include "time.h"
 // #include "chip_system_time.h"
+#define TIME_FLOW_PREFIX "[TIME_FLOW][时间链路] "
 
 errcode_t uapi_get_timestampe_ms(uint32_t *tm)
 {
@@ -967,7 +968,9 @@ errcode_t uapi_get_timestampe_ss(uint32_t *tm)
     }
  
     *tm = get_current_timestamp();
-    //printf("[timestamp:%u]\n", *tm);
+    if (*tm == 0) {
+        PRINT(TIME_FLOW_PREFIX "读取当前时间戳为0（UTC秒），可能尚未完成时间恢复/校时" NEWLINE);
+    }
     return ERRCODE_SUCC;
 }
 
@@ -991,6 +994,7 @@ errcode_t uapi_get_timestampe_ss_extend(uint32_t *tm,int year, int month, int da
 
 errcode_t uaip_set_time_utc_zone(uint32_t seconds,int16_t zone_quarters)
 {    
+    PRINT(TIME_FLOW_PREFIX "设置UTC时间：seconds=%u, zone_quarters=%d" NEWLINE, seconds, zone_quarters);
     return sync_time_utc(seconds,zone_quarters);
     // return 0;
 }
@@ -1003,6 +1007,7 @@ errcode_t uaip_sntp_set_time_utc(uint32_t seconds)
 
     printf(" zone_quarters : %d\n",zone_quarters);
    
+    PRINT(TIME_FLOW_PREFIX "SNTP校时开始：utc_seconds=%u, zone_quarters=%d" NEWLINE, seconds, zone_quarters);
     errcode_t ret = sync_time_utc(seconds,zone_quarters);
 
 
@@ -1019,6 +1024,8 @@ errcode_t uaip_sntp_set_time_utc(uint32_t seconds)
     timeinfo.tm_min,
     timeinfo.tm_sec,zone_quarters,ret);
     printf("utc timestamp %d , local timestamp %d, timezone %ld\n",get_current_timestamp(),get_local_timestamp(),timezone);
+    PRINT(TIME_FLOW_PREFIX "SNTP校时结束：ret=0x%x, utc_now=%u, local_now=%u" NEWLINE,
+        ret, get_current_timestamp(), get_local_timestamp());
     
      return ERRCODE_SUCC;
 }
@@ -1027,6 +1034,7 @@ errcode_t uaip_set_time_local(uint32_t seconds)
 {
      int zone_quarters = uapi_get_timezone();
 
+    PRINT(TIME_FLOW_PREFIX "设置本地时间开始：local_seconds=%u, zone_quarters=%d" NEWLINE, seconds, zone_quarters);
     sync_time(seconds,zone_quarters);
 
     time_t rawtime;
@@ -1043,6 +1051,8 @@ errcode_t uaip_set_time_local(uint32_t seconds)
     timeinfo.tm_sec,zone_quarters);
 
     printf("utc timestamp %d , local timestamp %d\n",get_current_timestamp(),get_local_timestamp());
+    PRINT(TIME_FLOW_PREFIX "设置本地时间结束：utc_now=%u, local_now=%u" NEWLINE,
+        get_current_timestamp(), get_local_timestamp());
     
     return ERRCODE_SUCC;
 
@@ -1281,6 +1291,7 @@ errcode_t uapi_set_time_from_cat1(char* cat1time)
 
      if (ret == 0 )
      {
+            PRINT(TIME_FLOW_PREFIX "CAT1时间设置开始：zone=%d, utc_seconds=%u" NEWLINE, zone, sec);
             struct timeval tv = { 0 };
             struct timezone tz = { 0 };
 
@@ -1289,6 +1300,8 @@ errcode_t uapi_set_time_from_cat1(char* cat1time)
             tz.tz_dsttime = 0;
             tz.tz_minuteswest = zone*60;
             settimeofday(&tv, &tz);
+            PRINT(TIME_FLOW_PREFIX "CAT1时间设置完成：utc_now=%u, local_now=%u" NEWLINE,
+                get_current_timestamp(), get_local_timestamp());
 
      }else{
         printf("convert to time failed ret %d!\n",ret);
@@ -2574,6 +2587,7 @@ void uapi_restore_factory_setting(void)
 uint32_t uapi_calendar_store_date(void)
 {
 #if 1
+     PRINT(TIME_FLOW_PREFIX "关机/重启前保存时间到Calendar寄存器：local_now=%u" NEWLINE, get_local_timestamp());
      save_time();
      return ERRCODE_SUCC;
 #else
@@ -2604,7 +2618,10 @@ uint32_t uapi_calendar_store_date(void)
 uint32_t uapi_calendar_recover_date(void)
 {
 #if 1
+    PRINT(TIME_FLOW_PREFIX "开机恢复时间开始：准备从Calendar寄存器恢复系统时间" NEWLINE);
     restore_time();
+    PRINT(TIME_FLOW_PREFIX "开机恢复时间结束：utc_now=%u, local_now=%u" NEWLINE,
+        get_current_timestamp(), get_local_timestamp());
     return ERRCODE_SUCC;
 #else
     calendar_t date;
-- 
2.17.1