feat: add blackbox for liteos_a

1、在内核增加BlackBox核心框架，对外提供模块回调接口注册和故障处理接口。
2、增加默认的系统模块适配层，处理通用内核态和用户态故障日志抓取和保存。

Close #I3NN7V
Signed-off-by: Nqidechun <qidechun@huawei.com>

Kconfig

@@ -61,6 +61,8 @@ source "../../kernel/liteos_a/arch/Kconfig"
 source "../../kernel/liteos_a/kernel/common/Kconfig"
 ######################### config options of patchfs #####################
 source "../../kernel/liteos_a/kernel/common/patchfs/Kconfig"
+######################### config options of blackbox #####################
+source "../../kernel/liteos_a/kernel/common/blackbox/Kconfig"
 
 config QUICK_START
     bool "Enable QUICK_START"
@@ -175,7 +177,7 @@ config PLATFORM_DVFS
 
 config SAVE_EXCINFO
     bool "Enable Saving Exception Information"
-    default n
+    default y if BLACKBOX
     help
       Answer Y to enable LiteOS support saving exception information to storage medium.
 

arch/arm/arm/src/los_exc.c

@@ -62,6 +62,9 @@
 #ifdef LOSCFG_FS_VFS
 #include "console.h"
 #endif
+#ifdef LOSCFG_BLACKBOX
+#include "los_blackbox.h"
+#endif
 
 
 #define INVALID_CPUID  0xFFFF
@@ -589,6 +592,9 @@ STATIC VOID OsUserExcHandle(ExcContext *excBufAddr)
         /* Exception handling All operations should be kept prior to that operation */
         OsExcRestore();
         /* kill user exc process */
+#ifdef LOSCFG_BLACKBOX
+        BBoxNotifyError("USER_CRASH", MODULE_SYSTEM, "Crash in user", 0);
+#endif
         LOS_Exit(OS_PRO_EXIT_OK);
     }
 
@@ -1058,6 +1064,9 @@ LITE_OS_SEC_TEXT VOID STATIC OsExcPriorDisposal(ExcContext *excBufAddr)
 
 LITE_OS_SEC_TEXT_INIT STATIC VOID OsPrintExcHead(UINT32 far)
 {
+#ifdef LOSCFG_BLACKBOX
+    SetExcInfoIndex(0);
+#endif
 #ifdef LOSCFG_KERNEL_VM
     /* You are not allowed to add any other print information before this exception information */
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
@@ -1125,7 +1134,9 @@ LITE_OS_SEC_TEXT_INIT VOID OsExcHandleEntry(UINT32 excType, ExcContext *excBufAd
         if (g_curNestCount[ArchCurrCpuid()] == 1) {
 #ifdef LOSCFG_SAVE_EXCINFO
             if (func != NULL) {
+#ifndef LOSCFG_BLACKBOX
                 SetExcInfoIndex(0);
+#endif
                 OsSysStateSave(&intCount, &lockCount);
                 OsRecordExcInfoTime();
                 OsSysStateRestore(intCount, lockCount);
@@ -1154,6 +1165,9 @@ LITE_OS_SEC_TEXT_INIT VOID OsExcHandleEntry(UINT32 excType, ExcContext *excBufAd
     }
 #endif
 
+#ifdef LOSCFG_BLACKBOX
+    BBoxNotifyError(EVENT_PANIC, MODULE_SYSTEM, "Crash in kernel", 1);
+#endif
     while (1) {}
 }
 

kernel/base/misc/task_shellcmd.c

@@ -85,12 +85,18 @@ STATIC UINT32 *taskWaterLine = NULL;
 #define OS_TASK_ALL_INFO_LEN      (g_taskMaxNum * (sizeof(LosTaskCB) + sizeof(UINT32)))
 
 #ifdef LOSCFG_FS_VFS
+#ifdef LOSCFG_BLACKBOX
+#define SaveExcInfo(arg, ...) WriteExcInfoToBuf(arg, ##__VA_ARGS__)
+#else
+#define SaveExcInfo(arg, ...)
+#endif
 #define PROCESS_INFO_SHOW(seqBuf, arg...) do {              \
     if (seqBuf != NULL) {                                   \
         (void)LosBufPrintf((struct SeqBuf *)seqBuf, ##arg); \
     } else {                                                 \
         PRINTK(arg);                                         \
     }                                                        \
+    SaveExcInfo(arg);                                        \
 } while (0)
 #else
 #define PROCESS_INFO_SHOW(seqBuf, arg...) PRINTK(arg)

kernel/common/blackbox/Kconfig

+config BLACKBOX
+    bool "Enable BlackBox"
+    default y
+    help
+      Answer Y to enable LiteOS support blackbox
+
+config LOG_ROOT_PATH
+    string
+    default "/storage/data/log" if BLACKBOX
+    help
+      define the default log path of blackbox
\ No newline at end of file

kernel/common/blackbox/Makefile

+include $(LITEOSTOPDIR)/config.mk
+
+MODULE_NAME := $(notdir $(shell pwd))
+
+LOCAL_SRCS := $(wildcard *.c)
+
+LOCAL_INCLUDE := \
+        -I $(LITEOSTOPDIR)/kernel/common \
+        -I $(LITEOSTOPDIR)/kernel/common/blackbox \
+        -I $(LITEOSTOPDIR)/syscall \
+
+LOCAL_FLAGS := $(LOCAL_INCLUDE) $(LITEOS_GCOV_OPTS)
+
+include $(MODULE)

kernel/common/blackbox/los_blackbox.h

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOS_BLACKBOX_H
+#define LOS_BLACKBOX_H
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#ifndef __user
+#define __user
+#endif
+
+#include "stdarg.h"
+#include "los_typedef.h"
+
+#define PATH_MAX_LEN          256
+#define EVENT_MAX_LEN         32
+#define MODULE_MAX_LEN        32
+#define ERROR_DESC_MAX_LEN    512
+#ifndef LOSCFG_LOG_ROOT_PATH
+#define LOSCFG_LOG_ROOT_PATH "/storage/data/log"
+#endif
+#define KERNEL_FAULT_LOG_PATH LOSCFG_LOG_ROOT_PATH "/kernel_fault.log"
+#define USER_FAULT_LOG_PATH   LOSCFG_LOG_ROOT_PATH "/user_fault.log"
+
+#define MODULE_SYSTEM         "SYSTEM"
+#define EVENT_SYSREBOOT       "SYSREBOOT"
+#define EVENT_LONGPRESS       "LONGPRESS"
+#define EVENT_COMBINATIONKEY  "COMBINATIONKEY"
+#define EVENT_SUBSYSREBOOT    "SUBSYSREBOOT"
+#define EVENT_POWEROFF        "POWEROFF"
+#define EVENT_PANIC           "PANIC"
+#define EVENT_SYS_WATCHDOG    "SYSWATCHDOG"
+#define EVENT_HUNGTASK        "HUNGTASK"
+#define EVENT_BOOTFAIL        "BOOTFAIL"
+
+struct ErrorInfo {
+    char event[EVENT_MAX_LEN];
+    char module[MODULE_MAX_LEN];
+    char errorDesc[ERROR_DESC_MAX_LEN];
+};
+
+struct ModuleOps {
+    char module[MODULE_MAX_LEN];
+    void (*Dump)(const char *logDir, struct ErrorInfo *info);
+    void (*Reset)(struct ErrorInfo *info);
+    int (*GetLastLogInfo)(struct ErrorInfo *info);
+    int (*SaveLastLog)(const char *logDir, struct ErrorInfo *info);
+};
+
+int BBoxRegisterModuleOps(struct ModuleOps *ops);
+int BBoxNotifyError(const char event[EVENT_MAX_LEN],
+    const char module[MODULE_MAX_LEN],
+    const char errorDesc[ERROR_DESC_MAX_LEN],
+    int needSysReset);
+int OsBBoxDriverInit(void);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif
\ No newline at end of file

kernel/common/blackbox/los_blackbox_common.c

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ------------ includes ------------ */
+#include "los_blackbox_common.h"
+#ifdef LOSCFG_LIB_LIBC
+#include "stdlib.h"
+#include "unistd.h"
+#endif
+#include "fs/fs.h"
+#include "securec.h"
+#include "los_memory.h"
+
+/* ------------ local macroes ------------ */
+/* ------------ local prototypes ------------ */
+/* ------------ local function declarations ------------ */
+/* ------------ global function declarations ------------ */
+/* ------------ local variables ------------ */
+/* ------------ function definitions ------------ */
+int FullWriteFile(const char *filePath, const char *buf, size_t bufSize, int isAppend)
+{
+    int fd;
+    int totalToWrite = (int)bufSize;
+    int totalWrite = 0;
+
+    if (filePath == NULL || buf == NULL || bufSize == 0) {
+        BBOX_PRINT_ERR("filePath: %p, buf: %p, bufSize: %lu!\n", filePath, buf, bufSize);
+        return -1;
+    }
+
+    fd = open(filePath, O_CREAT | O_RDWR | (isAppend ? O_APPEND : O_TRUNC), 0644);
+    if (fd < 0) {
+        BBOX_PRINT_ERR("Create file [%s] failed, fd: %d!\n", filePath, fd);
+        return -1;
+    }
+    while (totalToWrite > 0) {
+        int writeThisTime = write(fd, buf, totalToWrite);
+        if (writeThisTime < 0) {
+            BBOX_PRINT_ERR("Failed to write file [%s]!\n", filePath);
+            (void)close(fd);
+            return -1;
+        }
+        buf += writeThisTime;
+        totalToWrite -= writeThisTime;
+        totalWrite += writeThisTime;
+    }
+    (void)close(fd);
+
+    return (totalWrite == (int)bufSize) ? 0 : -1;
+}
+
+int SaveBasicErrorInfo(const char *filePath, struct ErrorInfo *info)
+{
+    char *buf;
+
+    if (filePath == NULL || info == NULL) {
+        BBOX_PRINT_ERR("filePath: %p, event: %p!\n", filePath, info);
+        return -1;
+    }
+
+    buf = LOS_MemAlloc(m_aucSysMem1, ERROR_INFO_MAX_LEN);
+    if (buf == NULL) {
+        BBOX_PRINT_ERR("LOS_MemAlloc failed!\n");
+        return -1;
+    }
+    (void)memset_s(buf, ERROR_INFO_MAX_LEN, 0, ERROR_INFO_MAX_LEN);
+    (void)snprintf_s(buf, ERROR_INFO_MAX_LEN, ERROR_INFO_MAX_LEN - 1,
+        ERROR_INFO_HEADER ERROR_INFO_HEADER_FORMAT, info->event, info->module, info->errorDesc);
+    *(buf + ERROR_INFO_MAX_LEN - 1) = '\0';
+    (void)FullWriteFile(filePath, buf, strlen(buf), 0);
+    (void)LOS_MemFree(m_aucSysMem1, buf);
+
+    return 0;
+}
\ No newline at end of file

kernel/common/blackbox/los_blackbox_common.h

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOS_BLACKBOX_COMMON_H
+#define LOS_BLACKBOX_COMMON_H
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#ifndef __user
+#define __user
+#endif
+
+#include "los_blackbox.h"
+#include "los_printf.h"
+#include "los_typedef.h"
+
+#define ERROR_INFO_HEADER            "#### error info ####\n"
+#define ERROR_INFO_HEADER_FORMAT     "event: %s\nmodule: %s\nerrorDesc: %s\n"
+#define ERROR_INFO_MAX_LEN           768
+#define Min(a, b)                    (((a) > (b)) ? (b) : (a))
+#define BBOX_PRINT_ERR(format, ...)  PRINTK("bbox: func: %s, line: %d, Err: " \
+    format, __func__, __LINE__, ##__VA_ARGS__)
+#define BBOX_PRINT_INFO(format, ...) PRINTK("bbox: Info: " format, ##__VA_ARGS__)
+
+int FullWriteFile(const char *filePath, const char *buf, size_t bufSize, int isAppend);
+int SaveBasicErrorInfo(const char *filePath, struct ErrorInfo *info);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif
\ No newline at end of file

kernel/common/blackbox/los_blackbox_core.c

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ------------ includes ------------ */
+#include "los_blackbox.h"
+#include "los_blackbox_common.h"
+#include "los_blackbox_detector.h"
+#ifdef LOSCFG_LIB_LIBC
+#include "stdlib.h"
+#include "unistd.h"
+#endif
+#include "los_base.h"
+#include "los_config.h"
+#include "los_excinfo_pri.h"
+#include "los_hw.h"
+#include "los_init.h"
+#include "los_memory.h"
+#include "los_sem.h"
+#include "los_syscall.h"
+#include "securec.h"
+#include "sys/reboot.h"
+
+/* ------------ local macroes ------------ */
+#define LOG_WAIT_TIMES 10
+#define LOG_PART_WAIT_TIME 1000
+
+/* ------------ local prototypes ------------ */
+typedef struct BBoxOps {
+    LOS_DL_LIST opsList;
+    struct ModuleOps ops;
+} BBoxOps;
+
+/* ------------ local function declarations ------------ */
+/* ------------ global function declarations ------------ */
+/* ------------ local variables ------------ */
+static UINT32 g_opsListSem = 0;
+static UINT32 g_tempErrInfoSem = 0;
+static LOS_DL_LIST_HEAD(g_opsList);
+struct ErrorInfo *g_tempErrInfo;
+
+/* ------------ function definitions ------------ */
+static void FormatErrorInfo(struct ErrorInfo *info,
+    const char event[EVENT_MAX_LEN],
+    const char module[MODULE_MAX_LEN],
+    const char errorDesc[ERROR_DESC_MAX_LEN])
+{
+    if (info == NULL || event == NULL || module == NULL || errorDesc == NULL) {
+        BBOX_PRINT_ERR("info: %p, event: %p, module: %p, errorDesc: %p!\n", info, event, module, errorDesc);
+        return;
+    }
+
+    (void)memset_s(info, sizeof(*info), 0, sizeof(*info));
+    (void)strncpy_s(info->event, sizeof(info->event), event, Min(strlen(event), sizeof(info->event) - 1));
+    info->event[sizeof(info->event) - 1] = '\0';
+    (void)strncpy_s(info->module, sizeof(info->module), module, Min(strlen(module), sizeof(info->module) - 1));
+    info->module[sizeof(info->module) - 1] = '\0';
+    (void)strncpy_s(info->errorDesc, sizeof(info->errorDesc), errorDesc,
+        Min(strlen(errorDesc), sizeof(info->errorDesc) - 1));
+    info->errorDesc[sizeof(info->errorDesc) - 1] = '\0';
+}
+
+#ifdef LOSCFG_FS_VFS
+static bool IsLogPartReady(void)
+{
+    return access(LOSCFG_LOG_ROOT_PATH, 0) == 0;
+}
+
+static void WaitForLogPart(void)
+{
+    BBOX_PRINT_INFO("wait for log part [%s] begin!\n", LOSCFG_LOG_ROOT_PATH);
+    while (!IsLogPartReady()) {
+        LOS_Msleep(LOG_PART_WAIT_TIME);
+    }
+    BBOX_PRINT_INFO("wait for log part [%s] end!\n", LOSCFG_LOG_ROOT_PATH);
+}
+#else
+static bool IsLogPartReady(void)
+{
+    return TRUE;
+}
+
+static void WaitForLogPart(void)
+{
+    int i = 0;
+
+    BBOX_PRINT_INFO("wait for log part [%s] begin!\n", LOSCFG_LOG_ROOT_PATH);
+    while (i++ < LOG_WAIT_TIMES) {
+        LOS_Msleep(LOG_PART_WAIT_TIME);
+    }
+    BBOX_PRINT_INFO("wait for log part [%s] end!\n", LOSCFG_LOG_ROOT_PATH);
+}
+#endif
+
+static bool FindModuleOps(struct ErrorInfo *info, BBoxOps **ops)
+{
+    bool found = false;
+
+    if (info == NULL || ops == NULL) {
+        BBOX_PRINT_ERR("info: %p, ops: %p!\n", info, ops);
+        return found;
+    }
+
+    LOS_DL_LIST_FOR_EACH_ENTRY(*ops, &g_opsList, BBoxOps, opsList) {
+        if (*ops != NULL && strcmp((*ops)->ops.module, info->module) == 0) {
+            found = true;
+            break;
+        }
+    }
+    if (!found) {
+        BBOX_PRINT_ERR("[%s] hasn't been registered!\n", info->module);
+    }
+
+    return found;
+}
+
+static void InvokeModuleOps(struct ErrorInfo *info, BBoxOps *ops)
+{
+    if (info == NULL || ops == NULL) {
+        BBOX_PRINT_ERR("info: %p, ops: %p!\n", info, ops);
+        return;
+    }
+
+    if (ops->ops.Dump != NULL) {
+        BBOX_PRINT_INFO("[%s] starts dumping log!\n", ops->ops.module);
+        ops->ops.Dump(LOSCFG_LOG_ROOT_PATH, info);
+        BBOX_PRINT_INFO("[%s] ends dumping log!\n", ops->ops.module);
+    }
+    if (ops->ops.Reset != NULL) {
+        BBOX_PRINT_INFO("[%s] starts resetting!\n", ops->ops.module);
+        ops->ops.Reset(info);
+        BBOX_PRINT_INFO("[%s] ends resetting!\n", ops->ops.module);
+    }
+}
+
+static void SaveLastLog(const char *logDir)
+{
+    struct ErrorInfo *info;
+    BBoxOps *ops;
+
+    info = LOS_MemAlloc(m_aucSysMem1, sizeof(*info));
+    if (info == NULL) {
+        BBOX_PRINT_ERR("LOS_MemAlloc failed!\n");
+        return;
+    }
+
+    if (LOS_SemPend(g_opsListSem, LOS_WAIT_FOREVER) != LOS_OK) {
+        BBOX_PRINT_ERR("Request g_opsListSem failed!\n");
+        (void)LOS_MemFree(m_aucSysMem1, info);
+        return;
+    }
+
+    LOS_DL_LIST_FOR_EACH_ENTRY(ops, &g_opsList, BBoxOps, opsList) {
+        if (ops == NULL) {
+            BBOX_PRINT_ERR("ops: NULL, please check it!\n");
+            continue;
+        }
+        if (ops->ops.GetLastLogInfo != NULL && ops->ops.SaveLastLog != NULL) {
+            (void)memset_s(info, sizeof(*info), 0, sizeof(*info));
+            if (ops->ops.GetLastLogInfo(info) != 0) {
+                BBOX_PRINT_ERR("[%s] failed to get log info!\n", ops->ops.module);
+                continue;
+            }
+            BBOX_PRINT_INFO("[%s] starts saving log!\n", ops->ops.module);
+            if (ops->ops.SaveLastLog(logDir, info) != 0) {
+                BBOX_PRINT_ERR("[%s] failed to save log!\n", ops->ops.module);
+            } else {
+                BBOX_PRINT_INFO("[%s] ends saving log!\n", ops->ops.module);
+                BBOX_PRINT_INFO("[%s] starts uploading event [%s]\n", info->module, info->event);
+#ifdef LOSCFG_FS_VFS
+                (void)UploadEventByFile(KERNEL_FAULT_LOG_PATH);
+#else
+                BBOX_PRINT_INFO("LOSCFG_FS_VFS isn't defined!\n");
+#endif
+                BBOX_PRINT_INFO("[%s] ends uploading event [%s]\n", info->module, info->event);
+            }
+        } else {
+            BBOX_PRINT_ERR("module [%s], GetLastLogInfo: %p, SaveLastLog: %p!\n",
+                 ops->ops.module, ops->ops.GetLastLogInfo, ops->ops.SaveLastLog);
+        }
+    }
+    (void)LOS_SemPost(g_opsListSem);
+    (void)LOS_MemFree(m_aucSysMem1, info);
+}
+
+static void SaveLogWithoutReset(struct ErrorInfo *info)
+{
+    BBoxOps *ops;
+
+    if (info == NULL) {
+        BBOX_PRINT_ERR("info: %p!\n", info);
+        return;
+    }
+
+    if (LOS_SemPend(g_opsListSem, LOS_WAIT_FOREVER) != LOS_OK) {
+        BBOX_PRINT_ERR("Request g_opsListSem failed!\n");
+        return;
+    }
+    if (!FindModuleOps(info, &ops)) {
+        (void)LOS_SemPost(g_opsListSem);
+        return;
+    }
+    if (ops->ops.Dump == NULL && ops->ops.Reset == NULL) {
+        (void)LOS_SemPost(g_opsListSem);
+        if (SaveBasicErrorInfo(USER_FAULT_LOG_PATH, info) == 0) {
+            BBOX_PRINT_INFO("[%s] starts uploading event [%s]\n", info->module, info->event);
+#ifdef LOSCFG_FS_VFS
+            (void)UploadEventByFile(USER_FAULT_LOG_PATH);
+#else
+            BBOX_PRINT_INFO("LOSCFG_FS_VFS isn't defined!\n");
+#endif
+            BBOX_PRINT_INFO("[%s] ends uploading event [%s]\n", info->module, info->event);
+        }
+        return;
+    }
+    InvokeModuleOps(info, ops);
+    (void)LOS_SemPost(g_opsListSem);
+}
+
+static void SaveTempErrorLog(void)
+{
+    if (LOS_SemPend(g_tempErrInfoSem, LOS_WAIT_FOREVER) != LOS_OK) {
+        BBOX_PRINT_ERR("Request g_tempErrInfoSem failed!\n");
+        return;
+    }
+    if (g_tempErrInfo == NULL) {
+        BBOX_PRINT_ERR("g_tempErrInfo: %p!\n", g_tempErrInfo);
+        (void)LOS_SemPost(g_tempErrInfoSem);
+        return;
+    }
+    if (strlen(g_tempErrInfo->event) != 0) {
+        SaveLogWithoutReset(g_tempErrInfo);
+    }
+    (void)LOS_MemFree(m_aucSysMem1, g_tempErrInfo);
+    g_tempErrInfo = NULL;
+    (void)LOS_SemPost(g_tempErrInfoSem);
+}
+
+static void SaveLogWithReset(struct ErrorInfo *info)
+{
+    int ret;
+    BBoxOps *ops;
+
+    if (info == NULL) {
+        BBOX_PRINT_ERR("info: %p!\n", info);
+        return;
+    }
+
+    if (!FindModuleOps(info, &ops)) {
+        return;
+    }
+    InvokeModuleOps(info, ops);
+    ret = SysReboot(0, 0, RB_AUTOBOOT);
+    BBOX_PRINT_INFO("SysReboot, ret: %d\n", ret);
+}
+
+static void SaveTempErrorInfo(const char event[EVENT_MAX_LEN],
+    const char module[MODULE_MAX_LEN],
+    const char errorDesc[ERROR_DESC_MAX_LEN])
+{
+    if (event == NULL || module == NULL || errorDesc == NULL) {
+        BBOX_PRINT_ERR("event: %p, module: %p, errorDesc: %p!\n", event, module, errorDesc);
+        return;
+    }
+    if (LOS_SemPend(g_tempErrInfoSem, LOS_WAIT_FOREVER) != LOS_OK) {
+        BBOX_PRINT_ERR("Request g_tempErrInfoSem failed!\n");
+        return;
+    }
+    FormatErrorInfo(g_tempErrInfo, event, module, errorDesc);
+    (void)LOS_SemPost(g_tempErrInfoSem);
+}
+
+static int SaveErrorLog(UINTPTR uwParam1, UINTPTR uwParam2, UINTPTR uwParam3, UINTPTR uwParam4)
+{
+    const char *logDir = (const char *)uwParam1;
+    (void)uwParam2;
+    (void)uwParam3;
+    (void)uwParam4;
+
+#ifdef LOSCFG_FS_VFS
+    WaitForLogPart();
+#endif
+    SaveLastLog(logDir);
+    SaveTempErrorLog();
+
+    return 0;
+}
+
+#ifdef LOSCFG_BLACKBOX_DEBUG
+static void PrintModuleOps(void)
+{
+    struct BBoxOps *ops;
+
+    BBOX_PRINT_INFO("The following modules have been registered!\n");
+    LOS_DL_LIST_FOR_EACH_ENTRY(ops, &g_opsList, BBoxOps, opsList) {
+        if (ops == NULL) {
+            continue;
+        }
+        BBOX_PRINT_INFO("module: %s, Dump: %p, Reset: %p, GetLastLogInfo: %p, SaveLastLog: %p\n",
+            ops->ops.module, ops->ops.Dump, ops->ops.Reset, ops->ops.GetLastLogInfo, ops->ops.SaveLastLog);
+    }
+}
+#endif
+
+int BBoxRegisterModuleOps(struct ModuleOps *ops)
+{
+    BBoxOps *newOps;
+    BBoxOps *temp;
+
+    if (ops == NULL) {
+        BBOX_PRINT_ERR("ops: %p!\n", ops);
+        return -1;
+    }
+
+    newOps = LOS_MemAlloc(m_aucSysMem1, sizeof(*newOps));
+    if (newOps == NULL) {
+        BBOX_PRINT_ERR("LOS_MemAlloc failed!\n");
+        return -1;
+    }
+    (void)memset_s(newOps, sizeof(*newOps), 0, sizeof(*newOps));
+    (void)memcpy_s(&newOps->ops, sizeof(newOps->ops), ops, sizeof(*ops));
+    if (LOS_SemPend(g_opsListSem, LOS_WAIT_FOREVER) != LOS_OK) {
+        BBOX_PRINT_ERR("Request g_opsListSem failed!\n");
+        (void)LOS_MemFree(m_aucSysMem1, newOps);
+        return -1;
+    }
+    if (LOS_ListEmpty(&g_opsList)) {
+        goto __out;
+    }
+
+    LOS_DL_LIST_FOR_EACH_ENTRY(temp, &g_opsList, BBoxOps, opsList) {
+        if (temp == NULL) {
+            continue;
+        }
+        if (strcmp(temp->ops.module, ops->module) == 0) {
+            BBOX_PRINT_ERR("module [%s] has been registered!\n", ops->module);
+            (void)LOS_SemPost(g_opsListSem);
+            (void)LOS_MemFree(m_aucSysMem1, newOps);
+            return -1;
+        }
+    }
+
+__out:
+    LOS_ListTailInsert(&g_opsList, &newOps->opsList);
+    (void)LOS_SemPost(g_opsListSem);
+    BBOX_PRINT_INFO("module [%s] is registered successfully!\n", ops->module);
+#ifdef LOSCFG_BLACKBOX_DEBUG
+    PrintModuleOps();
+#endif
+
+    return 0;
+}
+
+int BBoxNotifyError(const char event[EVENT_MAX_LEN],
+    const char module[MODULE_MAX_LEN],
+    const char errorDesc[ERROR_DESC_MAX_LEN],
+    int needSysReset)
+{
+    struct ErrorInfo *info;
+
+    if (event == NULL || module == NULL || errorDesc == NULL) {
+        BBOX_PRINT_ERR("event: %p, module: %p, errorDesc: %p!\n", event, module, errorDesc);
+        return -1;
+    }
+    info = LOS_MemAlloc(m_aucSysMem1, sizeof(*info));
+    if (info == NULL) {
+        BBOX_PRINT_ERR("LOS_MemAlloc failed!\n");
+        return -1;
+    }
+    FormatErrorInfo(info, event, module, errorDesc);
+    if (needSysReset == 0) {
+        if (!IsLogPartReady()) {
+            SaveTempErrorInfo(event, module, errorDesc);
+        } else {
+            SaveLogWithoutReset(info);
+        }
+    } else {
+        SaveLogWithReset(info);
+    }
+    (void)LOS_MemFree(m_aucSysMem1, info);
+
+    return 0;
+}
+
+int OsBBoxDriverInit(void)
+{
+    UINT32 taskID;
+    TSK_INIT_PARAM_S taskParam;
+
+    if (LOS_BinarySemCreate(1, &g_opsListSem) != LOS_OK) {
+        BBOX_PRINT_ERR("Create g_opsListSem failed!\n");
+        return -1;
+    }
+    if (LOS_BinarySemCreate(1, &g_tempErrInfoSem) != LOS_OK) {
+        BBOX_PRINT_ERR("Create g_tempErrInfoSem failed!\n");
+        goto __err;
+    }
+    LOS_ListInit(&g_opsList);
+    g_tempErrInfo = LOS_MemAlloc(m_aucSysMem1, sizeof(*g_tempErrInfo));
+    if (g_tempErrInfo == NULL) {
+        BBOX_PRINT_ERR("LOS_MemAlloc failed!\n");
+        goto __err;
+    }
+    (void)memset_s(g_tempErrInfo, sizeof(*g_tempErrInfo), 0, sizeof(*g_tempErrInfo));
+    (void)memset_s(&taskParam, sizeof(taskParam), 0, sizeof(taskParam));
+    taskParam.auwArgs[0] = (UINTPTR)LOSCFG_LOG_ROOT_PATH;
+    taskParam.pfnTaskEntry = (TSK_ENTRY_FUNC)SaveErrorLog;
+    taskParam.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
+    taskParam.pcName = "SaveErrorLog";
+    taskParam.usTaskPrio = LOSCFG_BASE_CORE_TSK_DEFAULT_PRIO;
+    taskParam.uwResved = LOS_TASK_STATUS_DETACHED;
+#ifdef LOSCFG_KERNEL_SMP
+    taskParam.usCpuAffiMask = CPUID_TO_AFFI_MASK(ArchCurrCpuid());
+#endif
+    (void)LOS_TaskCreate(&taskID, &taskParam);
+    return 0;
+
+__err:
+    if (g_opsListSem != 0) {
+        (void)LOS_SemDelete(g_opsListSem);
+    }
+    if (g_tempErrInfoSem != 0) {
+        (void)LOS_SemDelete(g_tempErrInfoSem);
+    }
+
+    return -1;
+}
+LOS_MODULE_INIT(OsBBoxDriverInit, LOS_INIT_LEVEL_ARCH);
\ No newline at end of file

kernel/common/blackbox/los_blackbox_detector.c

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ------------ includes ------------ */
+#include "los_blackbox_detector.h"
+#include "los_blackbox_common.h"
+#ifdef LOSCFG_LIB_LIBC
+#include "stdlib.h"
+#include "unistd.h"
+#endif
+
+/* ------------ local macroes ------------ */
+/* ------------ local prototypes ------------ */
+/* ------------ local function declarations ------------ */
+/* ------------ global function declarations ------------ */
+/* ------------ local variables ------------ */
+/* ------------ function definitions ------------ */
+int UploadEventByFile(const char *filePath)
+{
+    if (filePath == NULL) {
+        BBOX_PRINT_ERR("filePath: %p\n", filePath);
+        return -1;
+    }
+
+    return 0;
+}
+
+int UploadEventByStream(const char *buf, size_t bufSize)
+{
+    if (buf == NULL || bufSize == 0) {
+        BBOX_PRINT_ERR("buf: %p, bufSize: %u\n", buf, (UINT32)bufSize);
+        return -1;
+    }
+
+    return 0;
+}
\ No newline at end of file

kernel/common/blackbox/los_blackbox_detector.h

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOS_BLACKBOX_DETECTOR_H
+#define LOS_BLACKBOX_DETECTOR_H
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#ifndef __user
+#define __user
+#endif
+
+#include "los_typedef.h"
+
+int UploadEventByFile(const char *filePath);
+int UploadEventByStream(const char *buf, size_t bufSize);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif
\ No newline at end of file

kernel/common/blackbox/los_blackbox_system_adapter.c

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* ------------ includes ------------ */
+#include "los_blackbox_system_adapter.h"
+#include "los_blackbox_common.h"
+#include "los_blackbox_detector.h"
+#ifdef LOSCFG_LIB_LIBC
+#include "stdlib.h"
+#include "unistd.h"
+#endif
+#include "los_base.h"
+#include "los_config.h"
+#include "los_excinfo_pri.h"
+#include "los_hw.h"
+#include "los_init.h"
+#include "los_memory.h"
+#include "los_vm_phys.h"
+#include "fs/fs.h"
+#include "securec.h"
+
+/* ------------ local macroes ------------ */
+#define MEM_OVERLAP_COUNT 50
+#define LOG_FLAG "GOODLOG"
+#define FAULT_LOG_SIZE 0x4000 /* 16KB */
+
+/* ------------ local prototypes ------------ */
+struct FaultLogInfo {
+    char flag[8]; /* 8 is the length of the flag */
+    int len; /* length of the fault log saved by the module excinfo */
+    struct ErrorInfo info;
+};
+
+/* ------------ local function declarations ------------ */
+/* ------------ global function declarations ------------ */
+/* ------------ local variables ------------ */
+static char *g_logBuffer = NULL;
+
+/* ------------ function definitions ------------ */
+static void SaveFaultLog(const char *filePath, const char *dataBuf, size_t bufSize, struct ErrorInfo *info)
+{
+    (void)SaveBasicErrorInfo(filePath, info);
+    (void)FullWriteFile(filePath, dataBuf, bufSize, 1);
+}
+
+static void WriteExcFile(UINT32 startAddr, UINT32 space, UINT32 rwFlag, char *buf)
+{
+    (void)startAddr;
+    (void)space;
+    (void)rwFlag;
+    (void)buf;
+}
+
+static void RegisterExcInfoHook(void)
+{
+    if (g_logBuffer != NULL) {
+        LOS_ExcInfoRegHook(0, FAULT_LOG_SIZE - sizeof(struct FaultLogInfo),
+            g_logBuffer + sizeof(struct FaultLogInfo), WriteExcFile);
+    } else {
+        BBOX_PRINT_ERR("Alloc mem failed!\n");
+    }
+}
+
+static INT32 AllocLogBuffer(void)
+{
+    INT32 i;
+    size_t nPages = ROUNDUP(FAULT_LOG_SIZE, PAGE_SIZE) >> PAGE_SHIFT;
+    void *tempBuffer[MEM_OVERLAP_COUNT];
+
+    for (i = 0; i < MEM_OVERLAP_COUNT; i++) {
+        g_logBuffer = LOS_PhysPagesAllocContiguous(nPages);
+        tempBuffer[i] = g_logBuffer;
+    }
+    for (i = 0; i < MEM_OVERLAP_COUNT - 1; i++) {
+        LOS_PhysPagesFreeContiguous(tempBuffer[i], nPages);
+    }
+
+    return (g_logBuffer != NULL) ? 0 : -1;
+}
+
+static void Dump(const char *logDir, struct ErrorInfo *info)
+{
+    struct FaultLogInfo *pInfo;
+
+    if (logDir == NULL || info == NULL) {
+        BBOX_PRINT_ERR("logDir: %p, info: %p!\n", logDir, info);
+        return;
+    }
+    if (g_logBuffer == NULL) {
+        BBOX_PRINT_ERR("g_logBuffer: %p!\n", g_logBuffer);
+        return;
+    }
+
+    if (strcmp(info->event, EVENT_PANIC) == 0) {
+        pInfo = (struct FaultLogInfo *)g_logBuffer;
+        (void)memset_s(pInfo, sizeof(*pInfo), 0, sizeof(*pInfo));
+        pInfo->len = GetExcInfoLen();
+        (void)memcpy_s(&pInfo->flag, sizeof(pInfo->flag), LOG_FLAG, strlen(LOG_FLAG));
+        (void)memcpy_s(&pInfo->info, sizeof(pInfo->info), info, sizeof(*info));
+        DCacheFlushRange((UINTPTR)g_logBuffer, (UINTPTR)(g_logBuffer + FAULT_LOG_SIZE));
+    } else {
+        SaveFaultLog(USER_FAULT_LOG_PATH, g_logBuffer + sizeof(struct FaultLogInfo),
+            Min(FAULT_LOG_SIZE - sizeof(struct FaultLogInfo), GetExcInfoLen()), info);
+    }
+}
+
+static void Reset(struct ErrorInfo *info)
+{
+    if (info == NULL) {
+        BBOX_PRINT_ERR("info: %p!\n", info);
+        return;
+    }
+
+    if (strcmp(info->event, EVENT_PANIC) != 0) {
+        BBOX_PRINT_INFO("[%s] starts uploading event [%s]\n", info->module, info->event);
+        (void)UploadEventByFile(USER_FAULT_LOG_PATH);
+        BBOX_PRINT_INFO("[%s] ends uploading event [%s]\n", info->module, info->event);
+    }
+}
+
+static int GetLastLogInfo(struct ErrorInfo *info)
+{
+    struct FaultLogInfo *pInfo;
+
+    if (info == NULL) {
+        BBOX_PRINT_ERR("info: %p!\n", info);
+        return -1;
+    }
+    if (g_logBuffer == NULL) {
+        BBOX_PRINT_ERR("Alloc physical page failed!\n");
+        return -1;
+    }
+
+    pInfo = (struct FaultLogInfo *)g_logBuffer;
+    if (memcmp(pInfo->flag, LOG_FLAG, strlen(LOG_FLAG)) == 0) {
+        (void)memcpy_s(info, sizeof(*info), &pInfo->info, sizeof(pInfo->info));
+        return 0;
+    }
+
+    return -1;
+}
+
+static int SaveLastLog(const char *logDir, struct ErrorInfo *info)
+{
+#ifdef LOSCFG_FS_VFS
+    struct FaultLogInfo *pInfo;
+
+    if (logDir == NULL || info == NULL) {
+        BBOX_PRINT_ERR("logDir: %p, info: %p!\n", logDir, info);
+        return -1;
+    }
+    if (g_logBuffer == NULL) {
+        BBOX_PRINT_ERR("Alloc physical page failed!\n");
+        return -1;
+    }
+
+    pInfo = (struct FaultLogInfo *)g_logBuffer;
+    if (memcmp(pInfo->flag, LOG_FLAG, strlen(LOG_FLAG)) == 0) {
+        SaveFaultLog(KERNEL_FAULT_LOG_PATH, g_logBuffer + sizeof(*pInfo),
+            Min(FAULT_LOG_SIZE - sizeof(*pInfo), pInfo->len), info);
+    }
+#endif
+    (void)memset_s(g_logBuffer, FAULT_LOG_SIZE, 0, FAULT_LOG_SIZE);
+    BBOX_PRINT_INFO("[%s] starts uploading event [%s]\n", info->module, info->event);
+    (void)UploadEventByFile(KERNEL_FAULT_LOG_PATH);
+    BBOX_PRINT_INFO("[%s] ends uploading event [%s]\n", info->module, info->event);
+
+    return 0;
+}
+
+#ifdef LOSCFG_BLACKBOX_TEST
+static void BBoxTest(void)
+{
+      struct ModuleOps ops = {
+        .module = "MODULE_TEST",
+        .Dump = NULL,
+        .Reset = NULL,
+        .GetLastLogInfo = NULL,
+        .SaveLastLog = NULL,
+    };
+
+    if (BBoxRegisterModuleOps(&ops) != 0) {
+        BBOX_PRINT_ERR("BBoxRegisterModuleOps failed!\n");
+        return;
+    }
+    BBoxNotifyError("EVENT_TEST1", "MODULE_TEST", "Test BBoxNotifyError111", 0);
+}
+#endif
+
+int OsBBoxSystemAdapterInit(void)
+{
+    struct ModuleOps ops = {
+        .module = MODULE_SYSTEM,
+        .Dump = Dump,
+        .Reset = Reset,
+        .GetLastLogInfo = GetLastLogInfo,
+        .SaveLastLog = SaveLastLog,
+    };
+
+    /* allocate buffer for kmsg */
+    if (AllocLogBuffer() == 0) {
+        BBOX_PRINT_INFO("g_logBuffer: %p for blackbox!\n", g_logBuffer);
+        RegisterExcInfoHook();
+        if (BBoxRegisterModuleOps(&ops) != 0) {
+            BBOX_PRINT_ERR("BBoxRegisterModuleOps failed!\n");
+            LOS_PhysPagesFreeContiguous(g_logBuffer, ROUNDUP(FAULT_LOG_SIZE, PAGE_SIZE) >> PAGE_SHIFT);
+            g_logBuffer = NULL;
+            return -1;
+        }
+    } else {
+        BBOX_PRINT_ERR("AllocLogBuffer failed!\n");
+    }
+
+#ifdef LOSCFG_BLACKBOX_TEST
+    BBoxTest();
+#endif
+
+    return 0;
+}
+LOS_MODULE_INIT(OsBBoxSystemAdapterInit, LOS_INIT_LEVEL_ARCH);
\ No newline at end of file

kernel/common/blackbox/los_blackbox_system_adapter.h

+/*
+ * Copyright (c) 2021-2021 Huawei Device Co., Ltd. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ *    conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *    of conditions and the following disclaimer in the documentation and/or other materials
+ *    provided with the distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its contributors may be used
+ *    to endorse or promote products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LOS_BLACKBOX_SYSTEM_ADAPTER_H
+#define LOS_BLACKBOX_SYSTEM_ADAPTER_H
+
+#ifdef __cplusplus
+#if __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#ifndef __user
+#define __user
+#endif
+
+#include "los_blackbox.h"
+#include "los_blackbox_common.h"
+
+int OsBBoxSystemAdapterInit(void);
+
+#ifdef __cplusplus
+#if __cplusplus
+}
+#endif /* __cplusplus */
+#endif /* __cplusplus */
+
+#endif
\ No newline at end of file

kernel/common/los_excinfo.c

@@ -34,13 +34,29 @@
 #ifdef LOSCFG_SHELL
 #include "shcmd.h"
 #endif
+#ifdef LOSCFG_BLACKBOX
+#include "fs/fs.h"
+#include "fs/fs_operation.h"
+#endif
+
+#ifdef LOSCFG_BLACKBOX
+#define TEMP_EXC_INFO_SIZE 0x400
+#endif
 
 #ifdef LOSCFG_SAVE_EXCINFO
 STATIC log_read_write_fn g_excInfoRW = NULL; /* the hook of read-writing exception information */
 STATIC CHAR *g_excInfoBuf = NULL;            /* pointer to the buffer for storing the exception information */
+#ifdef LOSCFG_BLACKBOX
+STATIC UINT32 g_excInfoIndex = 0;            /* the index of the buffer for storing the exception information */
+#else
 STATIC UINT32 g_excInfoIndex = 0xFFFFFFFF;   /* the index of the buffer for storing the exception information */
+#endif
 STATIC UINT32 g_recordAddr = 0;              /* the address of storing the exception information */
 STATIC UINT32 g_recordSpace = 0;             /* the size of storing the exception information */
+#ifdef LOSCFG_BLACKBOX
+STATIC UINT32 g_excLogLen = 0;               /* the length of the exception information */
+STATIC CHAR *g_tempExcInfoBuf = NULL;        /* pointer to the buffer for storing the temp 	exception information */
+#endif
 
 VOID SetExcInfoRW(log_read_write_fn func)
 {
@@ -65,6 +81,11 @@ CHAR *GetExcInfoBuf(VOID)
 VOID SetExcInfoIndex(UINT32 index)
 {
     g_excInfoIndex = index;
+#ifdef LOSCFG_BLACKBOX
+    if (g_excInfoIndex == 0) {
+        g_excLogLen = 0;
+    }
+#endif
 }
 
 UINT32 GetExcInfoIndex(VOID)
@@ -72,6 +93,13 @@ UINT32 GetExcInfoIndex(VOID)
     return g_excInfoIndex;
 }
 
+#ifdef LOSCFG_BLACKBOX
+UINT32 GetExcInfoLen(VOID)
+{
+    return g_excLogLen;
+}
+#endif
+
 VOID SetRecordAddr(UINT32 addr)
 {
     g_recordAddr = addr;
@@ -92,8 +120,35 @@ UINT32 GetRecordSpace(VOID)
     return g_recordSpace;
 }
 
+#ifdef LOSCFG_BLACKBOX
+STATIC VOID SaveExcInfoUnsafe(CHAR *buf, INT32 size)
+{
+    for (INT32 i = 0; i < size; i++) {
+        *(g_excInfoBuf + g_excInfoIndex) = *(buf + i);
+        g_excInfoIndex++;
+        if (g_excLogLen < g_recordSpace) {
+            g_excLogLen++;
+        }
+        if (g_excInfoIndex >= g_recordSpace) {
+            g_excInfoIndex = 0;
+        }
+    }
+}
+#endif
+
 VOID WriteExcBufVa(const CHAR *format, va_list arglist)
 {
+#ifdef LOSCFG_BLACKBOX
+    if (g_tempExcInfoBuf != NULL) {
+        (VOID)memset_s(g_tempExcInfoBuf, TEMP_EXC_INFO_SIZE, 0, TEMP_EXC_INFO_SIZE);
+        INT32 ret = vsnprintf_s(g_tempExcInfoBuf, TEMP_EXC_INFO_SIZE, TEMP_EXC_INFO_SIZE - 1, format, arglist);
+        if (ret == -1) {
+            PRINT_ERR("g_tempExcInfoBuf is not enough or vsnprintf_s is error.\n");
+            return;
+        }
+        SaveExcInfoUnsafe(g_tempExcInfoBuf, ret);
+    }
+#else
     errno_t ret;
 
     if (g_recordSpace > g_excInfoIndex) {
@@ -105,6 +160,7 @@ VOID WriteExcBufVa(const CHAR *format, va_list arglist)
         }
         g_excInfoIndex += ret;
     }
+#endif
 }
 
 VOID WriteExcInfoToBuf(const CHAR *format, ...)
@@ -131,6 +187,9 @@ VOID LOS_ExcInfoRegHook(UINT32 startAddr, UINT32 space, CHAR *buf, log_read_writ
 #ifdef LOSCFG_FS_VFS
     los_vfs_init();
 #endif
+#ifdef LOSCFG_BLACKBOX
+    g_tempExcInfoBuf = LOS_VMalloc(TEMP_EXC_INFO_SIZE);
+#endif
 }
 
 /* Be called in the exception. */

kernel/common/los_excinfo_pri.h

@@ -47,6 +47,9 @@ extern VOID SetExcInfoBuf(CHAR *buf);
 extern CHAR *GetExcInfoBuf(VOID);
 extern VOID SetExcInfoIndex(UINT32 index);
 extern UINT32 GetExcInfoIndex(VOID);
+#ifdef LOSCFG_BLACKBOX
+extern UINT32 GetExcInfoLen(VOID);
+#endif
 extern VOID SetRecordAddr(UINT32 addr);
 extern UINT32 GetRecordAddr(VOID);
 extern VOID SetRecordSpace(UINT32 space);

tools/build/mk/liteos_tables_ldflags.mk

@@ -135,7 +135,9 @@ LITEOS_TABLES_KERNEL_INIT_LDFLAGS := \
     -uOsCpupGuardCreator \
     -uOsMpInit \
     -uOsResourceFreeTaskCreate \
-    -uOsSystemInit
+    -uOsSystemInit \
+    -uOsBBoxSystemAdapterInit \
+    -uOsBBoxDriverInit
 
 LITEOS_TABLES_DRIVER_LDFLAGS := \
     -ui2c_init \

tools/build/mk/los_config.mk

@@ -441,6 +441,12 @@ ifeq ($(LOSCFG_BASE_CORE_HILOG), y)
     LITEOS_HILOG_INCLUDE  += -I $(LITEOSTOPDIR)/../../base/hiviewdfx/hilog_lite/interfaces/native/kits/hilog
     LITEOS_CMACRO += -DLOSCFG_BASE_CORE_HILOG
 endif
+ifeq ($(LOSCFG_BLACKBOX), y)
+    LITEOS_BASELIB     += -lblackbox
+    LIB_SUBDIRS           += $(LITEOSTOPDIR)/kernel/common/blackbox
+    LITEOS_BLACKBOX_INCLUDE  += -I $(LITEOSTOPDIR)/kernel/common/blackbox
+    LITEOS_CMACRO += -DLOSCFG_BLACKBOX
+endif
 ############################## Dfx Option End #######################################
 
 ############################# Tools && Debug Option Begin ##############################
@@ -637,7 +643,8 @@ LITEOS_DRIVERS_INCLUDE     := $(LITEOS_CELLWISE_INCLUDE)   $(LITEOS_GPIO_INCLUDE
                               $(LITEOS_DRIVERS_HDF_INCLUDE) $(LITEOS_TZDRIVER_INCLUDE) \
                               $(LITEOS_HIEVENT_INCLUDE)    $(LITEOS_DEV_MEM_INCLUDE) \
                               $(LITEOS_DEV_QUICKSTART_INCLUDE)
-LITEOS_DFX_INCLUDE    := $(LITEOS_HILOG_INCLUDE)
+LITEOS_DFX_INCLUDE    := $(LITEOS_HILOG_INCLUDE) \
+                         $(LITEOS_BLACKBOX_INCLUDE)
 
 LITEOS_SECURITY_INCLUDE    := $(LITEOS_SECURITY_CAP_INC) $(LITEOS_SECURITY_VID_INC)
 LOSCFG_TOOLS_DEBUG_INCLUDE := $(LITEOS_SHELL_INCLUDE)  $(LITEOS_UART_INCLUDE) \