!887 Fix：修复文档链接失效问题

Merge pull request !887 from xuxinyu/3.2Beta1

BUILD.gn

@@ -35,6 +35,7 @@ declare_args() {
   tee_enable = false
   liteos_name = "OHOS_Image"
   liteos_skip_make = false
+  liteos_is_mini = false
 }
 
 tee = ""
@@ -75,7 +76,6 @@ generate_notice_file("kernel_notice_file") {
     "$LITEOSTHIRDPARTY/musl",
     "$LITEOSTHIRDPARTY/zlib",
     "$LITEOSTHIRDPARTY/FatFs",
-    "$LITEOSTHIRDPARTY/Linux_Kernel",
     "$LITEOSTHIRDPARTY/lwip",
     "$LITEOSTHIRDPARTY/NuttX",
     "$LITEOSTHIRDPARTY/mtd-utils",
@@ -129,7 +129,9 @@ config("stdinc_config") {
     "-isystem",
     std_include,
   ]
-  cflags += [ "-nostdinc" ]
+  if (!defined(LOSCFG_LIBC_NEWLIB)) {
+    cflags += [ "-nostdinc" ]
+  }
   asmflags = cflags
 }
 
@@ -316,14 +318,16 @@ group("kernel") {
 }
 
 group("liteos_a") {
-  deps = [
+  deps = [ ":kernel" ]
-    ":apps",
+  if (!liteos_is_mini) {
-    ":kernel",
+    deps += [
-    ":tests",
+      ":apps",
-    "//prebuilts/lite/sysroot/build:strip",
+      ":tests",
-  ]
+      "//prebuilts/lite/sysroot/build:strip",
-  if (liteos_skip_make == false) {
+    ]
-    deps += [ ":make" ]
+    if (liteos_skip_make == false) {
+      deps += [ ":make" ]
+    }
   }
 }
 
@@ -340,6 +344,17 @@ executable("liteos") {
     "-Wl,--no-eh-frame-hdr",
   ]
 
+  if (defined(LOSCFG_LIBC_NEWLIB)) {
+    ldflags += [
+      "-Wl,--wrap=_free_r",
+      "-Wl,--wrap,_malloc_usable_size_r",
+      "-Wl,--wrap,_malloc_r",
+      "-Wl,--wrap,_memalign_r",
+      "-Wl,--wrap,_realloc_r",
+      "-Wl,--wrap,_fseeko_r",
+    ]
+    ldflags -= [ "-nostdlib" ]
+  }
   libgcc = exec_script("//build/lite/run_shell_cmd.py",
                        [ "$cc -print-libgcc-file-name" ],
                        "trim string")
@@ -351,7 +366,7 @@ executable("liteos") {
   } else {
     ldflags +=
         [ "-Wl,-T" + rebase_path("tools/build/liteos.ld", root_build_dir) ]
-    ldflags += [ "-Wl,-nostartfiles" ]
+    ldflags += [ "-nostartfiles" ]
     inputs = [ "tools/build/liteos.ld" ]
   }
 

OAT.xml

@@ -15,7 +15,7 @@
 -->
 
 <!--
-   This is the configuration file template for OpenHarmony OSS Audit Tool, please copy it to your project root dir and modify it refer to OpenHarmony/tools_oat/README.
+   This is the configuration file template for OpenHarmony OSS Audit Tool. Please copy it to your project root dir and modify it by referring to OpenHarmony/tools_oat/README.
 -->
 
 <configuration>
@@ -23,7 +23,7 @@
         <licensefile></licensefile>
         <policylist>
             <policy name="projectPolicy" desc="">
-                <policyitem type="copyright" name="Huawei Technologies Co., Ltd. All rights reserved." path=".*" desc="original liteos copyright"/>
+                <policyitem type="copyright" name="Huawei Device Co., Ltd. All rights reserved." path=".*" desc="original liteos copyright"/>
                 <policyitem type="license" name="BSD-3-Clause" path=".*" desc="Liteos kernel use bsd3 license"/>
             </policy>
         </policylist>
@@ -38,7 +38,7 @@
                 <!--filteritem type="filepath" name="abcdefg/.*.uvwxyz" desc="Describe the reason for filtering scan results"/-->
                 <!--filteritem type="filepath" name="projectroot/[a-zA-Z0-9]{20,}.sh" desc="Temp files"/-->
             </filefilter>
-            <filefilter name="defaultPolicyFilter" desc="Filters for compatibility，license header policies">
+            <filefilter name="defaultPolicyFilter" desc="Filters for license header policies">
                 <!--filteritem type="filename" name="*.uvwxyz" desc="Describe the reason for filtering scan results"/-->
                 <!--filteritem type="filepath" name="abcdefg/.*.uvwxyz" desc="Describe the reason for filtering scan results"/-->
                 <!--filteritem type="filepath" name="projectroot/[a-zA-Z0-9]{20,}.sh" desc="Temp files"/-->

README.md

@@ -62,19 +62,18 @@ The OpenHarmony LiteOS Cortex-A is a new-generation kernel developed based on th
 ## Constraints<a name="section119744591305"></a>
 
 -   Programming languages: C and C++
--   Applicable development boards: Hi3518E V300 and Hi3516D V300
+-   Applicable development boards: Hi3516D V300
--   Hi3518E V300 uses the JFFS2 file system by default, and Hi3516D V300 uses the FAT file system by default.
+-   Hi3516D V300 uses the FAT file system by default.
 
 ## Usage<a name="section741617511812"></a>
 
-OpenHarmony LiteOS Cortex-A supports the  [Hi3518E V300](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-introduction-hi3518.md)  and  [Hi3516D V300](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-introduction-hi3516.md). You can develop and run your applications based on both development boards.
+OpenHarmony LiteOS Cortex-A supports the  [Hi3516D V300](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-introduction-hi3516.md). You can develop and run your applications based on this development board.
 
 ### Preparations<a name="section1579912573329"></a>
 
 You need to set up the compilation environment on Linux.
 
--   [Setting Up Ubuntu Development Environment](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-env-setup-linux.md)
+-   [Setting Up Ubuntu Development Environment](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-env-setup.md)
--   For Hi3518E V300, see  [Setting Up the Hi3518 Development Environment](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-steps-hi3518-setting.md).
 -   For Hi3516D V300, see  [Setting Up the Hi3516 Development Environment](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-steps-hi3516-setting.md).
 
 ### Source Code Acquisition<a name="section11443189655"></a>
@@ -85,8 +84,6 @@ Download and decompress a set of source code on a Linux server to acquire the  [
 
 For details about how to develop the first application, see:
 
--   [Developing the First Example Program Running on Hi3518](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-steps-hi3518-running.md)
-
 -   [Developing the First Example Program Running on Hi3516](https://gitee.com/openharmony/docs/blob/master/en/device-dev/quick-start/quickstart-lite-steps-hi3516-running.md)
 
 ## Repositories Involved<a name="section1371113476307"></a>

README_zh-HK.md

@@ -62,19 +62,18 @@ OpenHarmony LiteOS-A內核是基於Huawei LiteOS內核演進發展的新一代
 ## 約束<a name="section119744591305"></a>
 
 - 開發語言：C/C++；
-- 適用於Hi3518EV300、Hi3516DV300單板；
+- 適用於Hi3516DV300單板；
-- Hi3518EV300默認使用jffs2文件系統，Hi3516DV300默認使用FAT文件系統。
+- Hi3516DV300默認使用FAT文件系統。
 
 ## 使用說明<a name="section741617511812"></a>
 
-OpenHarmony LiteOS-A內核支持Hi3518EV300（[介紹](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3518.md)）、Hi3516DV300（[介紹](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3516.md)）單板，開發者可基於兩種單板開發運行自己的應用程序。
+OpenHarmony LiteOS-A內核支持Hi3516DV300（[介紹](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3516.md)）單板，開發者可基於此單板開發運行自己的應用程序。
 
 ### 準備<a name="section1579912573329"></a>
 
 開發者需要在Linux上搭建編譯環境：
 
-- [編譯環境凖備](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-package-environment.md);
+- [編譯環境凖備](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-env-setup.md);
-- Hi3518EV300單板：參考[環境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3518-setting.md)；
 - Hi3516DV300單板：參考[環境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3516-setting.md)。
 
 ### 獲取源碼<a name="section11443189655"></a>
@@ -85,8 +84,6 @@ OpenHarmony LiteOS-A內核支持Hi3518EV300（[介紹](https://gitee.com/openhar
 
 開發者開發第一個應用程序可參考：
 
-- [helloworld for Hi3518EV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3518-running.md)；
-
 - [helloworld for Hi3516DV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3516-running.md)。
 
 ## 相關倉<a name="section1371113476307"></a>

README_zh.md

@@ -61,19 +61,18 @@ OpenHarmony LiteOS-A内核是基于Huawei LiteOS内核演进发展的新一代
 ## 约束<a name="section119744591305"></a>
 
 -   开发语言：C/C++；
--   适用于Hi3518EV300、Hi3516DV300单板；
+-   适用于Hi3516DV300单板；
--   Hi3518EV300默认使用jffs2文件系统，Hi3516DV300默认使用FAT文件系统。
+-   Hi3516DV300默认使用FAT文件系统。
 
 ## 使用说明<a name="section741617511812"></a>
 
-OpenHarmony LiteOS-A内核支持Hi3518EV300（[介绍](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3518.md)）、Hi3516DV300（[介绍](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3516.md)）单板，开发者可基于两种单板开发运行自己的应用程序。
+OpenHarmony LiteOS-A内核支持[Hi3516DV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-introduction-hi3516.md)单板。开发者可基于此单板开发运行自己的应用程序。
 
 ### 准备<a name="section1579912573329"></a>
 
 开发者需要在Linux上搭建编译环境：
 
--   [编译环境准备](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-package-environment.md);
+-   [编译环境准备](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-env-setup.md);
--   Hi3518EV300单板：参考[环境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3518-setting.md)；
 -   Hi3516DV300单板：参考[环境搭建](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3516-setting.md)。
 
 ### 获取源码<a name="section11443189655"></a>
@@ -82,9 +81,7 @@ OpenHarmony LiteOS-A内核支持Hi3518EV300（[介绍](https://gitee.com/openhar
 
 ### 编译构建<a name="section2081013992812"></a>
 
-开发者开发第一个应用程序可参考：
+如果这是您的首次应用程序开发，可参考：
-
--   [helloworld for Hi3518EV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3518-running.md)；
 
 -   [helloworld for Hi3516DV300](https://gitee.com/openharmony/docs/blob/master/zh-cn/device-dev/quick-start/quickstart-lite-steps-hi3516-running.md)。
 

arch/arm/arm/src/los_exc.c

@@ -88,6 +88,7 @@ STATIC UINT32 g_nextExcWaitCpu = INVALID_CPUID;
 #define OS_MAX_BACKTRACE    15U
 #define DUMPSIZE            128U
 #define DUMPREGS            12U
+#define COM_REGS            4U
 #define INSTR_SET_MASK      0x01000020U
 #define THUMB_INSTR_LEN     2U
 #define ARM_INSTR_LEN       4U
@@ -516,13 +517,22 @@ VOID OsDumpContextMem(const ExcContext *excBufAddr)
         return;
     }
 
-    for (excReg = &(excBufAddr->R0); count <= DUMPREGS; excReg++, count++) {
+    for (excReg = &(excBufAddr->R0); count < COM_REGS; excReg++, count++) {
         if (IS_VALID_ADDR(*excReg)) {
             PrintExcInfo("\ndump mem around R%u:%p", count, (*excReg));
             OsDumpMemByte(DUMPSIZE, ((*excReg) - (DUMPSIZE >> 1)));
         }
     }
-
+    for (excReg = &(excBufAddr->R4); count < DUMPREGS; excReg++, count++) {
+        if (IS_VALID_ADDR(*excReg)) {
+            PrintExcInfo("\ndump mem around R%u:%p", count, (*excReg));
+            OsDumpMemByte(DUMPSIZE, ((*excReg) - (DUMPSIZE >> 1)));
+        }
+    }
+    if (IS_VALID_ADDR(excBufAddr->R12)) {
+        PrintExcInfo("\ndump mem around R12:%p", excBufAddr->R12);
+        OsDumpMemByte(DUMPSIZE, (excBufAddr->R12 - (DUMPSIZE >> 1)));
+    }
     if (IS_VALID_ADDR(excBufAddr->SP)) {
         PrintExcInfo("\ndump mem around SP:%p", excBufAddr->SP);
         OsDumpMemByte(DUMPSIZE, (excBufAddr->SP - (DUMPSIZE >> 1)));
@@ -645,6 +655,7 @@ STATIC INLINE BOOL FindSuitableStack(UINTPTR regFP, UINTPTR *start, UINTPTR *end
     const StackInfo *stack = NULL;
     vaddr_t kvaddr;
 
+#ifdef LOSCFG_KERNEL_VM
     if (g_excFromUserMode[ArchCurrCpuid()] == TRUE) {
         taskCB = OsCurrTaskGet();
         stackStart = taskCB->userMapBase;
@@ -655,6 +666,7 @@ STATIC INLINE BOOL FindSuitableStack(UINTPTR regFP, UINTPTR *start, UINTPTR *end
         }
         return found;
     }
+#endif
 
     /* Search in the task stacks */
     for (index = 0; index < g_taskMaxNum; index++) {

bundle.json

@@ -43,7 +43,6 @@
                 "bounds_checking_function",
                 "toybox",
                 "NuttX",
-                "Linux_Kernel",
                 "FatFs",
                 "mksh",
                 "musl",
@@ -63,4 +62,4 @@
             "test": []
         }
     }
-}
+}

compat/posix/src/time.c

@@ -387,9 +387,16 @@ int gettimeofday64(struct timeval64 *tv, struct timezone *tz)
 }
 #endif
 
+#ifdef LOSCFG_LIBC_NEWLIB
+int gettimeofday(struct timeval *tv, void *_tz)
+#else
 int gettimeofday(struct timeval *tv, struct timezone *tz)
+#endif
 {
     struct timeval64 stTimeVal64 = {0};
+#ifdef LOSCFG_LIBC_NEWLIB
+    struct timezone *tz = (struct timezone *)_tz;
+#endif
 
     if (tv == NULL) {
         TIME_RETURN(EINVAL);
@@ -718,6 +725,7 @@ typedef struct {
 
 static VOID SwtmrProc(UINTPTR tmrArg)
 {
+#ifdef LOSCFG_KERNEL_VM
     INT32 sig, ret;
     UINT32 intSave;
     pid_t pid;
@@ -761,9 +769,47 @@ static VOID SwtmrProc(UINTPTR tmrArg)
     return;
 EXIT:
     PRINT_ERR("Dispatch signals failed!, ret: %d\r\n", ret);
+#endif
     return;
 }
 
+int timer_create(clockid_t clockID, struct sigevent *restrict evp, timer_t *restrict timerID)
+{
+    UINT32 ret;
+    UINT16 swtmrID;
+#ifdef LOSCFG_SECURITY_VID
+    UINT16 vid;
+#endif
+
+    if (!timerID || (clockID != CLOCK_REALTIME) || !evp) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    if ((evp->sigev_notify != SIGEV_THREAD) || evp->sigev_notify_attributes) {
+        errno = ENOTSUP;
+        return -1;
+    }
+
+    ret = LOS_SwtmrCreate(1, LOS_SWTMR_MODE_ONCE, (SWTMR_PROC_FUNC)evp->sigev_notify_function,
+                          &swtmrID, (UINTPTR)evp->sigev_value.sival_ptr);
+    if (ret != LOS_OK) {
+        errno = (ret == LOS_ERRNO_SWTMR_MAXSIZE) ? EAGAIN : EINVAL;
+        return -1;
+    }
+
+#ifdef LOSCFG_SECURITY_VID
+    vid = AddNodeByRid(swtmrID);
+    if (vid == MAX_INVALID_TIMER_VID) {
+        (VOID)LOS_SwtmrDelete(swtmrID);
+        return -1;
+    }
+    swtmrID = vid;
+#endif
+    *timerID = (timer_t)(UINTPTR)swtmrID;
+    return 0;
+}
+
 int OsTimerCreate(clockid_t clockID, struct ksigevent *evp, timer_t *timerID)
 {
     UINT32 ret;
@@ -823,6 +869,7 @@ int timer_delete(timer_t timerID)
 {
     UINT16 swtmrID = (UINT16)(UINTPTR)timerID;
     VOID *arg = NULL;
+    UINTPTR swtmrProc;
 
 #ifdef LOSCFG_SECURITY_VID
     swtmrID = GetRidByVid(swtmrID);
@@ -832,10 +879,11 @@ int timer_delete(timer_t timerID)
     }
 
     arg = (VOID *)OS_SWT_FROM_SID(swtmrID)->uwArg;
+    swtmrProc = (UINTPTR)OS_SWT_FROM_SID(swtmrID)->pfnHandler;
     if (LOS_SwtmrDelete(swtmrID)) {
         goto ERROUT;
     }
-    if (arg != NULL) {
+    if ((swtmrProc == (UINTPTR)SwtmrProc) && (arg != NULL)) {
         free(arg);
     }
 
@@ -979,7 +1027,11 @@ STATIC INT32 DoNanoSleep(UINT64 nanoseconds)
     return -1;
 }
 
+#ifdef LOSCFG_LIBC_NEWLIB
+int usleep(unsigned long useconds)
+#else
 int usleep(unsigned useconds)
+#endif
 {
     return DoNanoSleep((UINT64)useconds * OS_SYS_NS_PER_US);
 }

drivers/block/disk/include/disk.h

@@ -163,7 +163,7 @@ extern "C" {
 #define DISK_ATA_GET_MODEL      21  /* Get model name */
 #define DISK_ATA_GET_SN         22  /* Get serial number */
 
-#ifdef LOSCFG_FS_FAT_CACHE
+#ifndef LOSCFG_FS_FAT_CACHE
 #define DISK_DIRECT_BUFFER_SIZE 4   /* los_disk direct io buffer when bcache is off */
 #endif
 

fs/Kconfig

@@ -4,7 +4,7 @@ source "fs/ramfs/Kconfig"
 source "fs/romfs/Kconfig"
 source "fs/nfs/Kconfig"
 source "fs/proc/Kconfig"
-source "fs/jffs2/Kconfig"
+#source "fs/jffs2/Kconfig"
 source "fs/rootfs/Kconfig"
 source "fs/patchfs/Kconfig"
-source "fs/zpfs/Kconfig"
+source "fs/zpfs/Kconfig"

fs/jffs2/BUILD.gn

@@ -28,23 +28,89 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import("//kernel/liteos_a/liteos.gni")
-import("//third_party/Linux_Kernel/Linux_Kernel.gni")
 
 module_switch = defined(LOSCFG_FS_JFFS)
 module_name = get_path_info(rebase_path("."), "name")
+linux_path = rebase_path("//kernel/linux/linux-5.10")
+out_path = rebase_path(target_out_dir)
+
 kernel_module(module_name) {
+  patch_path = rebase_path(".")
+  cmd = "if [ -d ${out_path}/jffs2_build ]; then rm -r ${out_path}/jffs2_build; fi && mkdir -p ${out_path}/jffs2_build/fs"
+  cmd += " && cp ${linux_path}/fs/jffs2 ${out_path}/jffs2_build/fs/. -r"
+  cmd += " && pushd ${out_path}/jffs2_build/"
+  cmd += " && patch -p1 < ${patch_path}/jffs2.patch && popd"
+  exec_script("//build/lite/run_shell_cmd.py", [ cmd ])
+
   sources = [
     "src/jffs2_hash.c",
     "src/vfs_jffs2.c",
   ]
 
-  sources += LINUX_KERNEL_FS_JFFS2_SRC_FILES
+  sources += [
+    "${out_path}/jffs2_build/fs/jffs2/background.c",
+    "${out_path}/jffs2_build/fs/jffs2/build.c",
+    "${out_path}/jffs2_build/fs/jffs2/compr.c",
+    "${out_path}/jffs2_build/fs/jffs2/compr_rtime.c",
+    "${out_path}/jffs2_build/fs/jffs2/compr_rubin.c",
+    "${out_path}/jffs2_build/fs/jffs2/compr_zlib.c",
+    "${out_path}/jffs2_build/fs/jffs2/debug.c",
+    "${out_path}/jffs2_build/fs/jffs2/dir.c",
+    "${out_path}/jffs2_build/fs/jffs2/erase.c",
+    "${out_path}/jffs2_build/fs/jffs2/file.c",
+    "${out_path}/jffs2_build/fs/jffs2/fs.c",
+    "${out_path}/jffs2_build/fs/jffs2/gc.c",
+    "${out_path}/jffs2_build/fs/jffs2/malloc.c",
+    "${out_path}/jffs2_build/fs/jffs2/nodelist.c",
+    "${out_path}/jffs2_build/fs/jffs2/nodemgmt.c",
+    "${out_path}/jffs2_build/fs/jffs2/read.c",
+    "${out_path}/jffs2_build/fs/jffs2/readinode.c",
+    "${out_path}/jffs2_build/fs/jffs2/scan.c",
+    "${out_path}/jffs2_build/fs/jffs2/summary.c",
+    "${out_path}/jffs2_build/fs/jffs2/super.c",
+    "${out_path}/jffs2_build/fs/jffs2/write.c",
+    "${out_path}/jffs2_build/fs/jffs2/writev.c",
+  ]
 
-  include_dirs = LINUX_KERNEL_FS_JFFS2_INCLUDE_DIRS
+  include_dirs = [
+    "${out_path}/jffs2_build/fs",
+    "${out_path}/jffs2_build/fs/jffs2",
+  ]
 
   public_configs = [ ":public" ]
+
+  deps = [ ":cp_jffs2_src" ]
 }
 
 config("public") {
   include_dirs = [ "include" ]
 }
+
+action("cp_jffs2_src") {
+  script = "//build/lite/run_shell_cmd.py"
+
+  outputs = [
+    "${target_out_dir}/jffs2_build/fs/jffs2/background.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/build.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/compr.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/compr_rtime.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/compr_rubin.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/compr_zlib.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/debug.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/dir.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/erase.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/file.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/fs.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/gc.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/malloc.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/nodelist.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/nodemgmt.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/read.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/readinode.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/scan.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/summary.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/super.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/write.c",
+    "${target_out_dir}/jffs2_build/fs/jffs2/writev.c",
+  ]
+}

fs/jffs2/Makefile

@@ -31,13 +31,51 @@ include $(LITEOSTOPDIR)/config.mk
 
 MODULE_NAME := $(notdir $(shell pwd))
 
-LOCAL_SRCS := $(wildcard src/*.c) \
+LINUX_PATH := $(LITEOSTOPDIR)/../linux/linux-5.10
-		$(wildcard $(LITEOSTHIRDPARTY)/Linux_Kernel/fs/jffs2/*.c)
+LOCAL_PATH := $(shell pwd)
+TEMP_SRC_PATH := $(OUT)/jffs2_build
+
+LOCAL_SRCS := \
+		$(TEMP_SRC_PATH)/fs/jffs2/background.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/build.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/compr.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/compr_rtime.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/compr_rubin.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/compr_zlib.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/debug.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/dir.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/erase.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/file.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/fs.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/gc.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/malloc.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/nodelist.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/nodemgmt.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/read.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/readinode.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/scan.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/summary.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/super.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/write.c \
+		$(TEMP_SRC_PATH)/fs/jffs2/writev.c \
+		$(LOCAL_PATH)/src/jffs2_hash.c \
+		$(LOCAL_PATH)/src/vfs_jffs2.c \
+
 LOCAL_INCLUDE := \
 		-I $(LITEOSTOPDIR)/fs/jffs2/include \
-		-I $(LITEOSTHIRDPARTY)/Linux_Kernel/fs/jffs2 \
+		-I $(TEMP_SRC_PATH)/fs/jffs2 \
-		-I $(LITEOSTHIRDPARTY)/Linux_Kernel/fs
+		-I $(TEMP_SRC_PATH)/fs
 LOCAL_FLAGS := $(LOCAL_INCLUDE)
 
+.PHONY: patch patch_clean
+$(LOCAL_SRCS): patch
+
+patch: patch_clean
+	cp $(LINUX_PATH)/fs/jffs2 $(TEMP_SRC_PATH)/fs/. -r
+	cd $(TEMP_SRC_PATH) && patch -p1 < $(LOCAL_PATH)/jffs2.patch
+
+patch_clean:
+	$(HIDE) $(RM) -rf $(TEMP_SRC_PATH)
+
 include $(MODULE)
 

kernel/base/core/los_process.c

@@ -995,7 +995,6 @@ LITE_OS_SEC_TEXT INT32 LOS_SetProcessPriority(INT32 pid, UINT16 prio)
 
 LITE_OS_SEC_TEXT INT32 OsGetProcessPriority(INT32 which, INT32 pid)
 {
-    INT32 prio;
     UINT32 intSave;
     SchedParam param = { 0 };
     (VOID)which;
@@ -1011,14 +1010,13 @@ LITE_OS_SEC_TEXT INT32 OsGetProcessPriority(INT32 which, INT32 pid)
     LosProcessCB *processCB = OS_PCB_FROM_PID(pid);
     SCHEDULER_LOCK(intSave);
     if (OsProcessIsUnused(processCB)) {
-        prio = -LOS_ESRCH;
+        SCHEDULER_UNLOCK(intSave);
-        goto OUT;
+        return -LOS_ESRCH;
     }
 
     LosTaskCB *taskCB = OS_TCB_FROM_TID(processCB->threadGroupID);
     taskCB->ops->schedParamGet(taskCB, &param);
 
-OUT:
     SCHEDULER_UNLOCK(intSave);
     return param.basePrio;
 }

kernel/base/core/los_task.c

@@ -226,6 +226,9 @@ LITE_OS_SEC_TEXT_INIT UINT32 OsIdleTaskCreate(VOID)
     taskInitParam.usCpuAffiMask = CPUID_TO_AFFI_MASK(ArchCurrCpuid());
 #endif
     ret = LOS_TaskCreateOnly(&idleTaskID, &taskInitParam);
+    if (ret != LOS_OK) {
+        return ret;
+    }
     LosTaskCB *idleTask = OS_TCB_FROM_TID(idleTaskID);
     idleTask->taskStatus |= OS_TASK_FLAG_SYSTEM_TASK;
     OsSchedRunqueueIdleInit(idleTaskID);

kernel/base/include/los_sched_pri.h

@@ -41,7 +41,9 @@
 #endif
 #include "los_stackinfo_pri.h"
 #include "los_futex_pri.h"
+#ifdef LOSCFG_KERNEL_PM
 #include "los_pm_pri.h"
+#endif
 #include "los_signal.h"
 #ifdef LOSCFG_KERNEL_CPUP
 #include "los_cpup_pri.h"
@@ -555,9 +557,11 @@ STATIC INLINE VOID SchedTaskFreeze(LosTaskCB *taskCB)
 {
     UINT64 responseTime;
 
+#ifdef LOSCFG_KERNEL_PM
     if (!OsIsPmMode()) {
         return;
     }
+#endif
 
     if (!(taskCB->taskStatus & (OS_TASK_STATUS_PEND_TIME | OS_TASK_STATUS_DELAY))) {
         return;

kernel/common/los_printf.c

@@ -198,6 +198,7 @@ __attribute__((noinline)) VOID UartPrintf(const CHAR *fmt, ...)
     va_end(ap);
 }
 
+#ifndef LOSCFG_LIBC_NEWLIB
 __attribute__((noinline)) VOID dprintf(const CHAR *fmt, ...)
 {
     va_list ap;
@@ -210,6 +211,7 @@ __attribute__((noinline)) VOID dprintf(const CHAR *fmt, ...)
 #endif
     va_end(ap);
 }
+#endif
 
 VOID LkDprintf(const CHAR *fmt, va_list ap)
 {
@@ -279,7 +281,7 @@ VOID LOS_LkPrint(INT32 level, const CHAR *func, INT32 line, const CHAR *fmt, ...
     }
 
     if ((level != LOS_COMMON_LEVEL) && ((level > LOS_EMG_LEVEL) && (level <= LOS_TRACE_LEVEL))) {
-        dprintf("[%s][%s:%s]", g_logString[level],
+        PRINTK("[%s][%s:%s]", g_logString[level],
                 ((OsCurrProcessGet() == NULL) ? "NULL" : OsCurrProcessGet()->processName),
                 ((OsCurrTaskGet() == NULL) ? "NULL" : OsCurrTaskGet()->taskName));
     }

kernel/extended/hilog/los_hilog.c

@@ -179,7 +179,7 @@ static ssize_t HiLogRead(struct file *filep, char *buffer, size_t bufLen)
     }
 
     if (bufLen < header.len + sizeof(header)) {
-        dprintf("buffer too small,bufLen=%d, header.len=%d,%d\n", bufLen, header.len, header.hdrSize);
+        PRINTK("buffer too small,bufLen=%d, header.len=%d,%d\n", bufLen, header.len, header.hdrSize);
         retval = -ENOMEM;
         goto out;
     }
@@ -238,7 +238,7 @@ static void HiLogHeadInit(struct HiLogEntry *header, size_t len)
 
     ret = clock_gettime(CLOCK_REALTIME, &now);
     if (ret != 0) {
-        dprintf("In %s line %d,clock_gettime fail\n", __FUNCTION__, __LINE__);
+        PRINTK("In %s line %d,clock_gettime fail\n", __FUNCTION__, __LINE__);
         return;
     }
 
@@ -274,7 +274,7 @@ static void HiLogCoverOldLog(size_t bufLen)
     if (isLastTimeFull == 1 && isThisTimeFull == 0) {
         /* so we can only print one log if hilog ring buffer is full in a short time */
         if (dropLogLines > 0) {
-            dprintf("hilog ringbuffer full, drop %d line(s) log\n", dropLogLines);
+            PRINTK("hilog ringbuffer full, drop %d line(s) log\n", dropLogLines);
         }
         isLastTimeFull = 0;
         dropLogLines = 0;
@@ -319,7 +319,7 @@ out:
         wake_up_interruptible(&g_hiLogDev.wq);
     }
     if (retval < 0) {
-        dprintf("write fail retval=%d\n", retval);
+        PRINTK("write fail retval=%d\n", retval);
     }
     return retval;
 }
@@ -328,7 +328,7 @@ static ssize_t HiLogWrite(struct file *filep, const char *buffer, size_t bufLen)
 {
     (void)filep;
     if (bufLen + sizeof(struct HiLogEntry) > HILOG_BUFFER) {
-        dprintf("input too large\n");
+        PRINTK("input too large\n");
         return -ENOMEM;
     }
 
@@ -339,7 +339,7 @@ static void HiLogDeviceInit(void)
 {
     g_hiLogDev.buffer = LOS_MemAlloc((VOID *)OS_SYS_MEM_ADDR, HILOG_BUFFER);
     if (g_hiLogDev.buffer == NULL) {
-        dprintf("In %s line %d,LOS_MemAlloc fail\n", __FUNCTION__, __LINE__);
+        PRINTK("In %s line %d,LOS_MemAlloc fail\n", __FUNCTION__, __LINE__);
     }
 
     init_waitqueue_head(&g_hiLogDev.wq);

kernel/extended/liteipc/hm_liteipc.c

@@ -63,6 +63,10 @@
 #define LITEIPC_TIMEOUT_MS 5000UL
 #define LITEIPC_TIMEOUT_NS 5000000000ULL
 
+#define MAJOR_VERSION (2)
+#define MINOR_VERSION (0)
+#define DRIVER_VERSION (MAJOR_VERSION | MINOR_VERSION << 16)
+
 typedef struct {
     LOS_DL_LIST list;
     VOID *ptr;
@@ -479,6 +483,7 @@ LITE_OS_SEC_TEXT STATIC UINT32 AddServiceAccess(UINT32 taskID, UINT32 serviceHan
         PRINT_ERR("Liteipc AddServiceAccess GetTid failed\n");
         return ret;
     }
+
     LosTaskCB *tcb = OS_TCB_FROM_TID(serviceTid);
     UINT32 processID = OS_TCB_FROM_TID(taskID)->processID;
     LosProcessCB *pcb = OS_PCB_FROM_PID(processID);
@@ -758,22 +763,45 @@ LITE_OS_SEC_TEXT STATIC UINT32 HandlePtr(UINT32 processID, SpecialObj *obj, BOOL
     return LOS_OK;
 }
 
-LITE_OS_SEC_TEXT STATIC UINT32 HandleSvc(UINT32 dstTid, const SpecialObj *obj, BOOL isRollback)
+LITE_OS_SEC_TEXT STATIC UINT32 HandleSvc(UINT32 dstTid, SpecialObj *obj, BOOL isRollback)
 {
     UINT32 taskID = 0;
     if (isRollback == FALSE) {
+        if (obj->content.svc.handle == -1) {
+            if (obj->content.svc.token != 1) {
+                PRINT_ERR("Liteipc HandleSvc wrong svc token\n");
+                return -EINVAL;
+            }
+            UINT32 selfTid = LOS_CurTaskIDGet();
+            LosTaskCB *tcb = OS_TCB_FROM_TID(selfTid);
+            if (tcb->ipcTaskInfo == NULL) {
+                tcb->ipcTaskInfo = LiteIpcTaskInit();
+            }
+            uint32_t serviceHandle = 0;
+            UINT32 ret = GenerateServiceHandle(selfTid, HANDLE_REGISTED, &serviceHandle);
+            if (ret != LOS_OK) {
+                PRINT_ERR("Liteipc GenerateServiceHandle failed.\n");
+                return ret;
+            }
+            obj->content.svc.handle = serviceHandle;
+            (VOID)LOS_MuxLock(&g_serviceHandleMapMux, LOS_WAIT_FOREVER);
+            AddServiceAccess(dstTid, serviceHandle);
+            (VOID)LOS_MuxUnlock(&g_serviceHandleMapMux);
+        }
         if (IsTaskAlive(obj->content.svc.handle) == FALSE) {
             PRINT_ERR("Liteipc HandleSvc wrong svctid\n");
             return -EINVAL;
         }
         if (HasServiceAccess(obj->content.svc.handle) == FALSE) {
-            PRINT_ERR("Liteipc %s, %d\n", __FUNCTION__, __LINE__);
+            PRINT_ERR("Liteipc %s, %d, svchandle:%d, tid:%d\n", __FUNCTION__, __LINE__, obj->content.svc.handle, LOS_CurTaskIDGet());
             return -EACCES;
         }
+        LosTaskCB *taskCb = OS_TCB_FROM_TID(obj->content.svc.handle);
+        if (taskCb->ipcTaskInfo == NULL) {
+            taskCb->ipcTaskInfo = LiteIpcTaskInit();
+        }
         if (GetTid(obj->content.svc.handle, &taskID) == 0) {
-            if (taskID == OS_PCB_FROM_PID(OS_TCB_FROM_TID(taskID)->processID)->ipcInfo->ipcTaskID) {
+            AddServiceAccess(dstTid, obj->content.svc.handle);
-                AddServiceAccess(dstTid, obj->content.svc.handle);
-            }
         }
     }
     return LOS_OK;
@@ -791,7 +819,7 @@ LITE_OS_SEC_TEXT STATIC UINT32 HandleObj(UINT32 dstTid, SpecialObj *obj, BOOL is
             ret = HandlePtr(processID, obj, isRollback);
             break;
         case OBJ_SVC:
-            ret = HandleSvc(dstTid, (const SpecialObj *)obj, isRollback);
+            ret = HandleSvc(dstTid, (SpecialObj *)obj, isRollback);
             break;
         default:
             ret = -EINVAL;
@@ -1288,6 +1316,22 @@ LITE_OS_SEC_TEXT STATIC UINT32 HandleCmsCmd(CmsCmdContent *content)
     return ret;
 }
 
+LITE_OS_SEC_TEXT STATIC UINT32 HandleGetVersion(IpcVersion *version)
+{
+    UINT32 ret = LOS_OK;
+    IpcVersion localIpcVersion;
+    if (version == NULL) {
+        return -EINVAL;
+    }
+
+    localIpcVersion.driverVersion = DRIVER_VERSION;
+    ret = copy_to_user((void *)version, (const void *)(&localIpcVersion), sizeof(IpcVersion));
+    if (ret != LOS_OK) {
+        PRINT_ERR("%s, %d\n", __FUNCTION__, __LINE__);
+    }
+    return ret; 
+}
+
 LITE_OS_SEC_TEXT int LiteIpcIoctl(struct file *filep, int cmd, unsigned long arg)
 {
     UINT32 ret = LOS_OK;
@@ -1309,6 +1353,8 @@ LITE_OS_SEC_TEXT int LiteIpcIoctl(struct file *filep, int cmd, unsigned long arg
             return (INT32)SetCms(arg);
         case IPC_CMS_CMD:
             return (INT32)HandleCmsCmd((CmsCmdContent *)(UINTPTR)arg);
+        case IPC_GET_VERSION:
+            return (INT32)HandleGetVersion((IpcVersion *)(UINTPTR)arg);
         case IPC_SET_IPC_THREAD:
             if (IsCmsSet() == FALSE) {
                 PRINT_ERR("Liteipc ServiceManager not set!\n");

kernel/extended/liteipc/hm_liteipc.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2022 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:
@@ -114,12 +114,17 @@ typedef enum {
     MT_NUM
 } MsgType;
 
+typedef struct {
+    int32_t driverVersion;
+} IpcVersion;
+
 /* lite ipc ioctl */
 #define IPC_IOC_MAGIC       'i'
 #define IPC_SET_CMS         _IO(IPC_IOC_MAGIC, 1)
 #define IPC_CMS_CMD         _IOWR(IPC_IOC_MAGIC, 2, CmsCmdContent)
 #define IPC_SET_IPC_THREAD  _IO(IPC_IOC_MAGIC, 3)
 #define IPC_SEND_RECV_MSG   _IOWR(IPC_IOC_MAGIC, 4, IpcContent)
+#define IPC_GET_VERSION     _IOR(IPC_IOC_MAGIC, 5, IpcVersion)
 
 typedef enum {
     CMS_GEN_HANDLE,

kernel/include/los_printf.h

@@ -87,9 +87,9 @@ typedef VOID (*pf_OUTPUT)(const CHAR *fmt, ...);
  * <ul><li>los_printf.h: the header file that contains the API declaration.</li></ul>
  * @see printf
  */
+#ifndef LOSCFG_LIBC_NEWLIB
 extern void dprintf(const char *fmt, ...);
-
+#endif
-#define diag_printf      dprintf
 
 #define PRINT_DEBUG(fmt, args...)    LOS_LkPrint(LOS_DEBUG_LEVEL, __FUNCTION__, __LINE__, fmt, ##args)
 #define PRINT_INFO(fmt, args...)     LOS_LkPrint(LOS_INFO_LEVEL, __FUNCTION__, __LINE__, fmt, ##args)

lib/Kconfig

@@ -5,6 +5,20 @@ config LIB_LIBC
     help
       Answer Y to enable libc for full code.
 
+choice
+    prompt "choose libc"
+    default LIBC_MUSL
+    depends on LIB_LIBC
+    help
+      Choose libc.
+
+config LIBC_NEWLIB
+    bool "newlibc"
+
+config LIBC_MUSL
+    bool "musl libc"
+endchoice
+
 config LIB_ZLIB
     bool "Enable Zlib"
     default y

lib/libc/BUILD.gn

@@ -1,5 +1,5 @@
 # Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
-# Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2022 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:
@@ -29,93 +29,16 @@
 
 import("//kernel/liteos_a/liteos.gni")
 
-MUSLDIR = "$LITEOSTHIRDPARTY/musl"
+group("libc") {
-
+  deps = [
-import("//third_party/optimized-routines/optimized-routines.gni")
+    "musl",
-import("$MUSLDIR/porting/liteos_a/kernel/musl.gni")
+    "newlib",
-
-module_switch = defined(LOSCFG_LIB_LIBC)
-module_name = get_path_info(rebase_path("."), "name")
-kernel_module(module_name) {
-  sources = MUSL_SRC_COMMON
-
-  if (defined(LOSCFG_ARCH_ARM_AARCH32)) {
-    sources += MUSL_SRC_ARM
-    foreach(f, MUSL_SRC_ARM) {
-      sources -= [ string_replace(f, "/arm/", "/") ]
-    }
-  }
-
-  if (LOSCFG_ARCH_ARM_VER == "armv7-a") {
-    sources -= [
-      "$MUSLPORTINGDIR/src/string/memchr.c",
-      "$MUSLPORTINGDIR/src/string/memcpy.c",
-      "$MUSLPORTINGDIR/src/string/strcmp.c",
-      "$MUSLPORTINGDIR/src/string/strcpy.c",
-      "$MUSLPORTINGDIR/src/string/strlen.c",
-    ]
-    sources += [
-      "src/arch/arm/memcmp.S",
-      "src/arch/arm/memset.S",
-    ]
-    sources += OPTRT_STRING_ARM_SRC_FILES_FOR_ARMV7_A
-    asmflags = [
-      "-D__strlen_armv6t2=strlen",
-      "-D__strcmp_arm=strcmp",
-      "-D__memchr_arm=memchr",
-    ]
-    if (defined(LOSCFG_KERNEL_LMS)) {
-      asmflags += [
-        "-D__memcpy_arm=__memcpy",
-        "-D__strcpy_arm=__strcpy",
-      ]
-    } else {
-      asmflags += [
-        "-D__memcpy_arm=memcpy",
-        "-D__strcpy_arm=strcpy",
-      ]
-    }
-  } else {
-    # arch is not armv7-a
-    sources += [
-      "src/memcmp.c",
-      "src/memset.c",
-    ]
-  }
-
-  include_dirs = [
-    "$MUSLPORTINGDIR/src/include",
-    "$MUSLPORTINGDIR/src/internal",
   ]
-
-  public_configs = [ ":public" ]
-  configs += [ ":private" ]
 }
 
 config("public") {
-  cflags = [
+  configs = [
-    "-isystem",
+    "musl:public",
-    rebase_path("$MUSLPORTINGDIR/include"),
+    "newlib:public",
-  ]
-}
-
-config("private") {
-  if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
-    cflags = [
-      "-Wno-char-subscripts",
-      "-Wno-unknown-pragmas",
-    ]
-  } else {
-    cflags = [
-      "-frounding-math",
-      "-Wno-unused-but-set-variable",
-      "-Wno-unknown-pragmas",
-    ]
-  }
-
-  cflags += [
-    "-Wno-shift-op-parentheses",
-    "-Wno-logical-op-parentheses",
-    "-Wno-bitwise-op-parentheses",
   ]
 }

lib/libc/musl/BUILD.gn

@@ -0,0 +1,121 @@
+# Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
+# Copyright (c) 2020-2022 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.
+
+import("//kernel/liteos_a/liteos.gni")
+
+MUSLDIR = "$LITEOSTHIRDPARTY/musl"
+
+import("//third_party/optimized-routines/optimized-routines.gni")
+import("$MUSLDIR/porting/liteos_a/kernel/musl.gni")
+
+module_switch = defined(LOSCFG_LIBC_MUSL)
+module_name = get_path_info(rebase_path("."), "name")
+kernel_module(module_name) {
+  sources = MUSL_SRC_COMMON
+
+  if (defined(LOSCFG_ARCH_ARM_AARCH32)) {
+    sources += MUSL_SRC_ARM
+    foreach(f, MUSL_SRC_ARM) {
+      sources -= [ string_replace(f, "/arm/", "/") ]
+    }
+  }
+
+  if (LOSCFG_ARCH_ARM_VER == "armv7-a") {
+    sources -= [
+      "$MUSLPORTINGDIR/src/string/memchr.c",
+      "$MUSLPORTINGDIR/src/string/memcpy.c",
+      "$MUSLPORTINGDIR/src/string/strcmp.c",
+      "$MUSLPORTINGDIR/src/string/strcpy.c",
+      "$MUSLPORTINGDIR/src/string/strlen.c",
+    ]
+    sources += [
+      "src/arch/arm/memcmp.S",
+      "src/arch/arm/memset.S",
+    ]
+    sources += OPTRT_STRING_ARM_SRC_FILES_FOR_ARMV7_A
+    asmflags = [
+      "-D__strlen_armv6t2=strlen",
+      "-D__strcmp_arm=strcmp",
+      "-D__memchr_arm=memchr",
+    ]
+    if (defined(LOSCFG_KERNEL_LMS)) {
+      asmflags += [
+        "-D__memcpy_arm=__memcpy",
+        "-D__strcpy_arm=__strcpy",
+      ]
+    } else {
+      asmflags += [
+        "-D__memcpy_arm=memcpy",
+        "-D__strcpy_arm=strcpy",
+      ]
+    }
+  } else {
+    # arch is not armv7-a
+    sources += [
+      "src/memcmp.c",
+      "src/memset.c",
+    ]
+  }
+
+  include_dirs = [
+    "$MUSLPORTINGDIR/src/include",
+    "$MUSLPORTINGDIR/src/internal",
+  ]
+
+  public_configs = [ ":public" ]
+  configs += [ ":private" ]
+}
+
+config("public") {
+  cflags = [
+    "-isystem",
+    rebase_path("$MUSLPORTINGDIR/include"),
+  ]
+}
+
+config("private") {
+  if (defined(LOSCFG_COMPILER_CLANG_LLVM)) {
+    cflags = [
+      "-Wno-char-subscripts",
+      "-Wno-unknown-pragmas",
+    ]
+  } else {
+    cflags = [
+      "-frounding-math",
+      "-Wno-unused-but-set-variable",
+      "-Wno-unknown-pragmas",
+    ]
+  }
+
+  cflags += [
+    "-Wno-shift-op-parentheses",
+    "-Wno-logical-op-parentheses",
+    "-Wno-bitwise-op-parentheses",
+  ]
+}

lib/libc/newlib/BUILD.gn

@@ -0,0 +1,58 @@
+# Copyright (c) 2022-2022 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.
+
+import("//kernel/liteos_a/liteos.gni")
+import("//third_party/musl/porting/liteos_a_newlib/kernel/newlib.gni")
+
+module_switch = defined(LOSCFG_LIBC_NEWLIB)
+module_name = get_path_info(rebase_path("."), "name")
+kernel_module(module_name) {
+  sources = NEWLIB_ADAPT_SRC_COMMON
+  configs += [ "$LITEOSTOPDIR:warn_config" ]
+
+  configs += [ ":private" ]
+}
+
+config("public") {
+  include_dirs = [ "porting/include" ]
+  include_dirs += NEWLIB_ADAPT_INCLUDE_DIRS
+}
+
+config("private") {
+  cflags = [
+    "-frounding-math",
+    "-Wno-unused-but-set-variable",
+    "-Wno-unknown-pragmas",
+  ]
+
+  cflags += [
+    "-Wno-shift-op-parentheses",
+    "-Wno-logical-op-parentheses",
+    "-Wno-bitwise-op-parentheses",
+  ]
+}

tools/build/mk/los_config.mk

@@ -204,7 +204,7 @@ LIB_SUBDIRS         += lib/libscrew
 LITEOS_LIBSCREW_INCLUDE += -I $(LITEOSTOPDIR)/lib/libscrew/include
 
 ifeq ($(LOSCFG_LIB_LIBC), y)
-    LIB_SUBDIRS           += lib/libc
+    LIB_SUBDIRS           += lib/libc/musl
     LITEOS_BASELIB        += -lc
     LITEOS_LIBC_INCLUDE   += \
         -isystem $(LITEOSTHIRDPARTY)/musl/porting/liteos_a/kernel/include
@@ -306,8 +306,8 @@ endif
 
 
 ifeq ($(LOSCFG_FS_JFFS), y)
-    LITEOS_BASELIB  += -ljffs2
+#    LITEOS_BASELIB  += -ljffs2
-    LIB_SUBDIRS     += fs/jffs2
+#    LIB_SUBDIRS     += fs/jffs2
 endif
 
 ifeq ($(LOSCFG_PLATFORM_ROOTFS), y)