Merge pull request #46 from RT-Thread/master

sycn

34 files changed, 106 insertions, 425 deletions

diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index 8dc93f9599..828f15a0f5 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -12,6 +12,9 @@
 #define __DFS_FS_H__
 
 #include <dfs.h>
+#ifdef RT_USING_LIBC
+#include <sys/types.h>
+#endif
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/components/drivers/i2c/i2c_core.c b/components/drivers/i2c/i2c_core.c
index 87178e37d5..47ba76d2be 100644
--- a/components/drivers/i2c/i2c_core.c
+++ b/components/drivers/i2c/i2c_core.c
@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author        Notes
  * 2012-04-25     weety         first version
+ * 2021-04-20     RiceChen      added support for bus control api
  */
 
 #include <rtdevice.h>
@@ -81,6 +82,26 @@ rt_size_t rt_i2c_transfer(struct rt_i2c_bus_device *bus,
     }
 }
 
+rt_err_t rt_i2c_control(struct rt_i2c_bus_device *bus,
+                        rt_uint32_t               cmd,
+                        rt_uint32_t               arg)
+{
+    rt_err_t ret;
+
+    if(bus->ops->i2c_bus_control)
+    {
+        ret = bus->ops->i2c_bus_control(bus, cmd, arg);
+
+        return ret;
+    }
+    else
+    {
+        LOG_E("I2C bus operation not supported");
+
+        return 0;
+    }
+}
+
 rt_size_t rt_i2c_master_send(struct rt_i2c_bus_device *bus,
                              rt_uint16_t               addr,
                              rt_uint16_t               flags,
diff --git a/components/drivers/i2c/i2c_dev.c b/components/drivers/i2c/i2c_dev.c
index 4f567f8227..c30bb62a92 100644
--- a/components/drivers/i2c/i2c_dev.c
+++ b/components/drivers/i2c/i2c_dev.c
@@ -7,6 +7,7 @@
  * Date           Author        Notes
  * 2012-04-25     weety         first version
  * 2014-08-03     bernard       fix some compiling warning
+ * 2021-04-20     RiceChen      added support for bus clock control
  */
 
 #include <rtdevice.h>
@@ -66,6 +67,7 @@ static rt_err_t i2c_bus_device_control(rt_device_t dev,
     rt_err_t ret;
     struct rt_i2c_priv_data *priv_data;
     struct rt_i2c_bus_device *bus = (struct rt_i2c_bus_device *)dev->user_data;
+    rt_uint32_t bus_clock;
 
     RT_ASSERT(bus != RT_NULL);
 
@@ -89,6 +91,14 @@ static rt_err_t i2c_bus_device_control(rt_device_t dev,
             return -RT_EIO;
         }
         break;
+    case RT_I2C_DEV_CTRL_CLK:
+        bus_clock = *(rt_uint32_t *)args;
+        ret = rt_i2c_control(bus, cmd, bus_clock);
+        if (ret < 0)
+        {
+            return -RT_EIO;
+        }
+        break;
     default:
         break;
     }
diff --git a/components/drivers/include/drivers/i2c.h b/components/drivers/include/drivers/i2c.h
index 50ce021d53..7bf99d26cc 100644
--- a/components/drivers/include/drivers/i2c.h
+++ b/components/drivers/include/drivers/i2c.h
@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author        Notes
  * 2012-04-25     weety         first version
+ * 2021-04-20     RiceChen      added support for bus control api
  */
 
 #ifndef __I2C_H__
@@ -74,6 +75,9 @@ struct rt_i2c_bus_device *rt_i2c_bus_device_find(const char *bus_name);
 rt_size_t rt_i2c_transfer(struct rt_i2c_bus_device *bus,
                           struct rt_i2c_msg         msgs[],
                           rt_uint32_t               num);
+rt_err_t rt_i2c_control(struct rt_i2c_bus_device *bus,
+                        rt_uint32_t               cmd,
+                        rt_uint32_t               arg);
 rt_size_t rt_i2c_master_send(struct rt_i2c_bus_device *bus,
                              rt_uint16_t               addr,
                              rt_uint16_t               flags,
diff --git a/components/drivers/include/drivers/i2c_dev.h b/components/drivers/include/drivers/i2c_dev.h
index 94f110c055..080ff26f87 100644
--- a/components/drivers/include/drivers/i2c_dev.h
+++ b/components/drivers/include/drivers/i2c_dev.h
@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author        Notes
  * 2012-04-25     weety         first version
+ * 2021-04-20     RiceChen      added bus clock command
  */
 
 #ifndef __I2C_DEV_H__
@@ -21,6 +22,7 @@ extern "C" {
 #define RT_I2C_DEV_CTRL_ADDR         0x21
 #define RT_I2C_DEV_CTRL_TIMEOUT      0x22
 #define RT_I2C_DEV_CTRL_RW           0x23
+#define RT_I2C_DEV_CTRL_CLK          0x24
 
 struct rt_i2c_priv_data
 {
diff --git a/components/libc/compilers/armlibc/dirent.h b/components/libc/compilers/armlibc/dirent.h
deleted file mode 100644
index 2c0521d2e3..0000000000
--- a/components/libc/compilers/armlibc/dirent.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-#include <rtlibc.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/armlibc/sys/README.md b/components/libc/compilers/armlibc/sys/README.md
deleted file mode 100644
index 7ad10a7d43..0000000000
--- a/components/libc/compilers/armlibc/sys/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Because Keil MDK leaks some system header file, we put them in here. 
\ No newline at end of file
diff --git a/components/libc/compilers/armlibc/sys/errno.h b/components/libc/compilers/armlibc/sys/errno.h
deleted file mode 100644
index 74cc986f7c..0000000000
--- a/components/libc/compilers/armlibc/sys/errno.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef SYS_ERRNO_H__
-#define SYS_ERRNO_H__
-
-#include <rtthread.h>
-
-#endif
diff --git a/components/libc/compilers/armlibc/sys/mman.h b/components/libc/compilers/armlibc/sys/mman.h
deleted file mode 100644
index 6a260ccd70..0000000000
--- a/components/libc/compilers/armlibc/sys/mman.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/common/SConscript b/components/libc/compilers/common/SConscript
index 319e1a3555..d9de1cf17f 100644
--- a/components/libc/compilers/common/SConscript
+++ b/components/libc/compilers/common/SConscript
@@ -23,5 +23,9 @@ else:
 
 if GetDepend('RT_USING_LIBC') or GetDepend('RT_LIBC_USING_TIME'):
     group = DefineGroup('libc', src, depend = [''], CPPPATH = CPPPATH, CPPDEFINES = CPPDEFINES)
-
+    list = os.listdir(cwd)
+    for d in list:
+        path = os.path.join(cwd, d)
+        if os.path.isfile(os.path.join(path, 'SConscript')):
+            group = group + SConscript(os.path.join(d, 'SConscript'))
 Return('group')
diff --git a/components/libc/compilers/newlib/sys/dirent.h b/components/libc/compilers/common/dirent.h
index bfba586093..bfba586093 100644
--- a/components/libc/compilers/newlib/sys/dirent.h
+++ b/components/libc/compilers/common/dirent.h
diff --git a/components/libc/compilers/common/none-gcc/SConscript b/components/libc/compilers/common/none-gcc/SConscript
new file mode 100644
index 0000000000..346e69b478
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/SConscript
@@ -0,0 +1,13 @@
+from building import *
+
+Import('rtconfig')
+
+src   = []
+cwd   = GetCurrentDir()
+CPPPATH = [cwd]
+group = []
+src += Glob('*.c')
+
+if rtconfig.PLATFORM != 'gcc':
+    group = DefineGroup('libc', src, depend = ['RT_USING_LIBC'], CPPPATH = CPPPATH)
+Return('group')
diff --git a/components/libc/compilers/armlibc/fcntl.h b/components/libc/compilers/common/none-gcc/fcntl.h
index f247b926e9..f247b926e9 100644
--- a/components/libc/compilers/armlibc/fcntl.h
+++ b/components/libc/compilers/common/none-gcc/fcntl.h
diff --git a/components/libc/compilers/common/none-gcc/readme.md b/components/libc/compilers/common/none-gcc/readme.md
new file mode 100644
index 0000000000..b10940d003
--- /dev/null
+++ b/components/libc/compilers/common/none-gcc/readme.md
@@ -0,0 +1,3 @@
+## Attentions
+
+This folder is "common" for toolchains excluding gcc.
\ No newline at end of file
diff --git a/components/libc/compilers/armlibc/sys/stat.h b/components/libc/compilers/common/none-gcc/sys/stat.h
index c4b42083c4..c4b42083c4 100644
--- a/components/libc/compilers/armlibc/sys/stat.h
+++ b/components/libc/compilers/common/none-gcc/sys/stat.h
diff --git a/components/libc/compilers/armlibc/sys/types.h b/components/libc/compilers/common/none-gcc/sys/types.h
index a6b245b81c..7222326a2a 100644
--- a/components/libc/compilers/armlibc/sys/types.h
+++ b/components/libc/compilers/common/none-gcc/sys/types.h
@@ -18,6 +18,8 @@ typedef int32_t          key_t;         /* Used for interprocess communication.
 typedef int              pid_t;         /* Used for process IDs and process group IDs. */
 typedef unsigned short   uid_t;
 typedef unsigned short   gid_t;
+typedef signed long      off_t;
+typedef int              mode_t;
 #ifndef ARCH_CPU_64BIT
 typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
 #else
diff --git a/components/libc/compilers/armlibc/sys/unistd.h b/components/libc/compilers/common/none-gcc/sys/unistd.h
index 7752a1caf7..7752a1caf7 100644
--- a/components/libc/compilers/armlibc/sys/unistd.h
+++ b/components/libc/compilers/common/none-gcc/sys/unistd.h
diff --git a/components/libc/compilers/armlibc/unistd.h b/components/libc/compilers/common/none-gcc/unistd.h
index cd77a12e3b..cd77a12e3b 100644
--- a/components/libc/compilers/armlibc/unistd.h
+++ b/components/libc/compilers/common/none-gcc/unistd.h
diff --git a/components/libc/compilers/common/readme.md b/components/libc/compilers/common/readme.md
index 81bb005d0a..856ddeb045 100644
--- a/components/libc/compilers/common/readme.md
+++ b/components/libc/compilers/common/readme.md
@@ -1,6 +1,6 @@
 ## Attentions
 
-1. This folder is "common" for armlibc newlibc and dlib.
+1. This folder is "common" for all toolchains.
 
 2. If you want to add new `.c` files, please do not forget to fix SConscript file too. eg:
 
diff --git a/components/libc/compilers/common/sys/ioctl.h b/components/libc/compilers/common/sys/ioctl.h
index df17b19a61..648d90230d 100644
--- a/components/libc/compilers/common/sys/ioctl.h
+++ b/components/libc/compilers/common/sys/ioctl.h
@@ -10,6 +10,9 @@
 #ifndef _SYS_IOCTL_H
 #define _SYS_IOCTL_H
 
-
+#include <rtconfig.h>
+#ifdef RT_USING_POSIX
+#include <dfs_posix.h>
+#endif
 
 #endif
diff --git a/components/libc/compilers/newlib/sys/mman.h b/components/libc/compilers/common/sys/mman.h
index 6a260ccd70..a9235d61f0 100644
--- a/components/libc/compilers/newlib/sys/mman.h
+++ b/components/libc/compilers/common/sys/mman.h
@@ -15,6 +15,8 @@
 extern "C" {
 #endif
 
+#include <sys/types.h>
+    
 #define MAP_FAILED     ((void *) -1)
 
 #define MAP_SHARED     0x01
diff --git a/components/libc/compilers/newlib/sys/statfs.h b/components/libc/compilers/common/sys/statfs.h
index 0996af9a18..0996af9a18 100644
--- a/components/libc/compilers/newlib/sys/statfs.h
+++ b/components/libc/compilers/common/sys/statfs.h
diff --git a/components/libc/compilers/newlib/sys/termios.h b/components/libc/compilers/common/sys/termios.h
index c4b42083c4..c4b42083c4 100644
--- a/components/libc/compilers/newlib/sys/termios.h
+++ b/components/libc/compilers/common/sys/termios.h
diff --git a/components/libc/compilers/dlib/dirent.h b/components/libc/compilers/dlib/dirent.h
deleted file mode 100644
index 2c0521d2e3..0000000000
--- a/components/libc/compilers/dlib/dirent.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef __RTT_DIRENT_H__
-#define __RTT_DIRENT_H__
-
-#include <rtthread.h>
-#include <rtlibc.h>
-
-/*
-* dirent.h - format of directory entries
- * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
- */
-
-/* File types */
-#define FT_REGULAR      0   /* regular file */
-#define FT_SOCKET       1   /* socket file  */
-#define FT_DIRECTORY    2   /* directory    */
-#define FT_USER         3   /* user defined */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef HAVE_DIR_STRUCTURE
-typedef struct
-{
-    int fd;                         /* directory file */
-    char buf[512];
-    int num;
-    int cur;
-} DIR;
-#endif
-
-#ifndef HAVE_DIRENT_STRUCTURE
-struct dirent
-{
-    rt_uint8_t  d_type;             /* The type of the file */
-    rt_uint8_t  d_namlen;           /* The length of the not including the terminating null file name */
-    rt_uint16_t d_reclen;           /* length of this record */
-    char d_name[256];               /* The null-terminated file name */
-};
-#endif
-
-int            closedir(DIR *);
-DIR           *opendir(const char *);
-struct dirent *readdir(DIR *);
-int            readdir_r(DIR *, struct dirent *, struct dirent **);
-void           rewinddir(DIR *);
-void           seekdir(DIR *, long int);
-long           telldir(DIR *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/components/libc/compilers/dlib/fcntl.h b/components/libc/compilers/dlib/fcntl.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/dlib/fcntl.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/dlib/sys/README.md b/components/libc/compilers/dlib/sys/README.md
deleted file mode 100644
index 4f0d203180..0000000000
--- a/components/libc/compilers/dlib/sys/README.md
+++ /dev/null
@@ -1 +0,0 @@
-Because IAR leaks some system header file, we put them in here. 
\ No newline at end of file
diff --git a/components/libc/compilers/dlib/sys/errno.h b/components/libc/compilers/dlib/sys/errno.h
deleted file mode 100644
index 54a1d33cd0..0000000000
--- a/components/libc/compilers/dlib/sys/errno.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-07-08     Bernard      The first version
- */
-
-#ifndef SYS_ERRNO_H__
-#define SYS_ERRNO_H__
-
-#include <errno.h>
-
-#endif
diff --git a/components/libc/compilers/dlib/sys/mman.h b/components/libc/compilers/dlib/sys/mman.h
deleted file mode 100644
index 6a260ccd70..0000000000
--- a/components/libc/compilers/dlib/sys/mman.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2017/11/30     Bernard      The first version.
- */
-
-#ifndef _SYS_MMAN_H
-#define _SYS_MMAN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define MAP_FAILED     ((void *) -1)
-
-#define MAP_SHARED     0x01
-#define MAP_PRIVATE    0x02
-#define MAP_TYPE       0x0f
-#define MAP_FIXED      0x10
-#define MAP_ANON       0x20
-#define MAP_ANONYMOUS  MAP_ANON
-#define MAP_NORESERVE  0x4000
-#define MAP_GROWSDOWN  0x0100
-#define MAP_DENYWRITE  0x0800
-#define MAP_EXECUTABLE 0x1000
-#define MAP_LOCKED     0x2000
-#define MAP_POPULATE   0x8000
-#define MAP_NONBLOCK   0x10000
-#define MAP_STACK      0x20000
-#define MAP_HUGETLB    0x40000
-#define MAP_FILE       0
-
-#define PROT_NONE      0
-#define PROT_READ      1
-#define PROT_WRITE     2
-#define PROT_EXEC      4
-#define PROT_GROWSDOWN 0x01000000
-#define PROT_GROWSUP   0x02000000
-
-#define MS_ASYNC       1
-#define MS_INVALIDATE  2
-#define MS_SYNC        4
-
-#define MCL_CURRENT    1
-#define MCL_FUTURE     2
-#define MCL_ONFAULT    4
-
-void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
-int munmap (void *start, size_t len);
-
-#ifdef __cplusplus
-}
-#endif
-#endif
diff --git a/components/libc/compilers/dlib/sys/signal.h b/components/libc/compilers/dlib/sys/signal.h
deleted file mode 100644
index a30235f2b2..0000000000
--- a/components/libc/compilers/dlib/sys/signal.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2019-07-08     Bernard      The first version
- */
-
-#ifndef SYS_SIGNAL_H__
-#define SYS_SIGNAL_H__
-
-#include <libc/libc_signal.h>
-
-#endif
diff --git a/components/libc/compilers/dlib/sys/stat.h b/components/libc/compilers/dlib/sys/stat.h
deleted file mode 100644
index c4b42083c4..0000000000
--- a/components/libc/compilers/dlib/sys/stat.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
diff --git a/components/libc/compilers/dlib/sys/types.h b/components/libc/compilers/dlib/sys/types.h
deleted file mode 100644
index 6e2d1ce839..0000000000
--- a/components/libc/compilers/dlib/sys/types.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add useconds_t
- */
-#ifndef __TYPES_H__
-#define __TYPES_H__
-
-#include <stdint.h>
-
-typedef int32_t          clockid_t;
-typedef int32_t          key_t;         /* Used for interprocess communication. */
-typedef int              pid_t;         /* Used for process IDs and process group IDs. */
-typedef unsigned short   uid_t;
-typedef unsigned short   gid_t;
-#ifndef ARCH_CPU_64BIT
-typedef signed int       ssize_t;       /* Used for a count of bytes or an error indication. */
-#else
-typedef long signed int  ssize_t;       /* Used for a count of bytes or an error indication. */
-#endif
-typedef unsigned long    useconds_t;    /* microseconds (unsigned) */
-
-typedef unsigned long    dev_t;
-
-typedef unsigned int     u_int;
-typedef unsigned char    u_char;
-typedef unsigned long    u_long;
-
-#endif
diff --git a/components/libc/compilers/dlib/sys/unistd.h b/components/libc/compilers/dlib/sys/unistd.h
deleted file mode 100644
index 14966a2bad..0000000000
--- a/components/libc/compilers/dlib/sys/unistd.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2020-12-16     Meco Man     add usleep
- */
-#ifndef _SYS_UNISTD_H
-#define _SYS_UNISTD_H
-
-#include <rtconfig.h>
-#include "types.h"
-
-#ifdef RT_USING_DFS
-
-#define STDIN_FILENO    0       /* standard input file descriptor */
-#define STDOUT_FILENO   1       /* standard output file descriptor */
-#define STDERR_FILENO   2       /* standard error file descriptor */
-
-#include <dfs_posix.h>
-#else
-#define _FREAD      0x0001  /* read enabled */
-#define _FWRITE     0x0002  /* write enabled */
-#define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
-#define _FMARK      0x0010  /* internal; mark during gc() */
-#define _FDEFER     0x0020  /* internal; defer for next gc pass */
-#define _FASYNC     0x0040  /* signal pgrp when data ready */
-#define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
-#define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
-#define _FCREAT     0x0200  /* open with file create */
-#define _FTRUNC     0x0400  /* open with truncation */
-#define _FEXCL      0x0800  /* error on open if file exists */
-#define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
-#define _FSYNC      0x2000  /* do all writes synchronously */
-#define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
-#define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
-#define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
-
-#endif
-
-
-int     isatty      (int fd);
-char *  ttyname     (int desc);
-
-unsigned int sleep(unsigned int seconds);
-int usleep(useconds_t usec);
-
-pid_t getpid(void);
-pid_t getppid(void);
-uid_t getuid(void);
-uid_t geteuid(void);
-gid_t getgid(void);
-gid_t getegid(void);
-
-#endif /* _SYS_UNISTD_H */
diff --git a/components/libc/compilers/dlib/unistd.h b/components/libc/compilers/dlib/unistd.h
deleted file mode 100644
index 72b9d538ec..0000000000
--- a/components/libc/compilers/dlib/unistd.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- */
-#ifndef _UNISTD_H_
-#define _UNISTD_H_
-
-# include "sys/unistd.h"
-
-#endif /* _UNISTD_H_ */
diff --git a/components/utilities/ulog/ulog.c b/components/utilities/ulog/ulog.c
index e903a707b2..9dd2ed2fd0 100644
--- a/components/utilities/ulog/ulog.c
+++ b/components/utilities/ulog/ulog.c
@@ -260,19 +260,36 @@ RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *ta
     /* add time info */
     {
 #ifdef ULOG_TIME_USING_TIMESTAMP
-        static time_t now;
+        static struct timeval now;
         static struct tm *tm, tm_tmp;
+        static rt_bool_t check_usec_support = RT_FALSE, usec_is_support = RT_FALSE;
 
-        now = time(NULL);
-        tm = gmtime_r(&now, &tm_tmp);
-
-#ifdef RT_USING_SOFT_RTC
-        rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, "%02d-%02d %02d:%02d:%02d.%03d", tm->tm_mon + 1,
-                tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec, rt_tick_get() % 1000);
-#else
-        rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, "%02d-%02d %02d:%02d:%02d", tm->tm_mon + 1,
-                tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
-#endif /* RT_USING_SOFT_RTC */
+        if (gettimeofday(&now, NULL) >= 0)
+        {
+            time_t t = now.tv_sec;
+            tm = localtime_r(&t, &tm_tmp);
+            /* show the time format MM-DD HH:MM:SS */
+            rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, "%02d-%02d %02d:%02d:%02d", tm->tm_mon + 1,
+                    tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
+            /* check the microseconds support when kernel is startup */
+            if (!check_usec_support && rt_thread_self() != RT_NULL)
+            {
+                long old_usec = now.tv_usec;
+                /* delay some time for wait microseconds changed */
+                rt_thread_delay(2);
+                gettimeofday(&now, NULL);
+                check_usec_support = RT_TRUE;
+                /* the microseconds is not equal between two gettimeofday calls */
+                if (now.tv_usec != old_usec)
+                    usec_is_support = RT_TRUE;
+            }
+            if (usec_is_support)
+            {
+                /* show the millisecond */
+                log_len += rt_strlen(log_buf + log_len);
+                rt_snprintf(log_buf + log_len, ULOG_LINE_BUF_SIZE - log_len, ".%03d", now.tv_usec / 1000);
+            }
+        }
 
 #else
         static rt_size_t tick_len = 0;
@@ -318,9 +335,14 @@ RT_WEAK rt_size_t ulog_formater(char *log_buf, rt_uint32_t level, const char *ta
         /* is not in interrupt context */
         if (rt_interrupt_get_nest() == 0)
         {
-            rt_size_t name_len = rt_strnlen(rt_thread_self()->name, RT_NAME_MAX);
-
-            rt_strncpy(log_buf + log_len, rt_thread_self()->name, name_len);
+            rt_size_t name_len = 0;
+            const char *thread_name = "N/A";
+            if (rt_thread_self())
+            {
+                thread_name = rt_thread_self()->name;
+            }
+            name_len = rt_strnlen(thread_name, RT_NAME_MAX);
+            rt_strncpy(log_buf + log_len, thread_name, name_len);
             log_len += name_len;
         }
         else