X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fos.h;h=a758f099aab622f4aba9696de3213bbdc67a9843;hb=622da1c36aee9c39075f2109848228a5737925c0;hp=950433daa32dbabce603e3a4941d142162e5506b;hpb=77fdd6d1eb69c1194148a9f4b4428d903af3619f;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/os.h b/include/os.h
index 950433d..a758f09 100644
--- a/include/os.h
+++ b/include/os.h
@@ -64,7 +64,7 @@ off_t os_lseek(int fd, off_t offset, int whence);
  * Access to the OS open() system call
  *
  * \param pathname	Pathname of file to open
- * \param flags		Flags, like O_RDONLY, O_RDWR
+ * \param flags		Flags, like OS_O_RDONLY, OS_O_RDWR
  * \return file descriptor, or -1 on error
  */
 int os_open(const char *pathname, int flags);
@@ -84,6 +84,14 @@ int os_open(const char *pathname, int flags);
 int os_close(int fd);
 
 /**
+ * Access to the OS unlink() system call
+ *
+ * \param pathname Path of file to delete
+ * \return 0 for success, other for error
+ */
+int os_unlink(const char *pathname);
+
+/**
  * Access to the OS exit() system call
  *
  * This exits with the supplied return code, which should be 0 to indicate
@@ -95,8 +103,12 @@ void os_exit(int exit_code) __attribute__((noreturn));
 
 /**
  * Put tty into raw mode to mimic serial console better
+ *
+ * @param fd		File descriptor of stdin (normally 0)
+ * @param allow_sigs	Allow Ctrl-C, Ctrl-Z to generate signals rather than
+ *			be handled by U-Boot
  */
-void os_tty_raw(int fd);
+void os_tty_raw(int fd, bool allow_sigs);
 
 /**
  * Acquires some memory from the underlying os.
@@ -107,6 +119,35 @@ void os_tty_raw(int fd);
 void *os_malloc(size_t length);
 
 /**
+ * Free memory previous allocated with os_malloc()/os_realloc()
+ *
+ * This returns the memory to the OS.
+ *
+ * \param ptr		Pointer to memory block to free
+ */
+void os_free(void *ptr);
+
+/**
+ * Reallocate previously-allocated memory to increase/decrease space
+ *
+ * This works in a similar way to the C library realloc() function. If
+ * length is 0, then ptr is freed. Otherwise the space used by ptr is
+ * expanded or reduced depending on whether length is larger or smaller
+ * than before.
+ *
+ * If ptr is NULL, then this is similar to calling os_malloc().
+ *
+ * This function may need to move the memory block to make room for any
+ * extra space, in which case the new pointer is returned.
+ *
+ * \param ptr		Pointer to memory block to reallocate
+ * \param length	New length for memory block
+ * \return pointer to new memory block, or NULL on failure or if length
+ *	is 0.
+ */
+void *os_realloc(void *ptr, size_t length);
+
+/**
  * Access to the usleep function of the os
  *
  * \param usec Time to sleep in micro seconds
@@ -176,8 +217,64 @@ const char *os_dirent_get_typename(enum os_dirent_t type);
  * Get the size of a file
  *
  * @param fname		Filename to check
- * @return size of file, or -1 if an error ocurred
+ * @param size		size of file is returned if no error
+ * @return 0 on success or -1 if an error ocurred
+ */
+int os_get_filesize(const char *fname, loff_t *size);
+
+/**
+ * Write a character to the controlling OS terminal
+ *
+ * This bypasses the U-Boot console support and writes directly to the OS
+ * stdout file descriptor.
+ *
+ * @param ch	Character to write
+ */
+void os_putc(int ch);
+
+/**
+ * Write a string to the controlling OS terminal
+ *
+ * This bypasses the U-Boot console support and writes directly to the OS
+ * stdout file descriptor.
+ *
+ * @param str	String to write (note that \n is not appended)
+ */
+void os_puts(const char *str);
+
+/**
+ * Write the sandbox RAM buffer to a existing file
+ *
+ * @param fname		Filename to write memory to (simple binary format)
+ * @return 0 if OK, -ve on error
+ */
+int os_write_ram_buf(const char *fname);
+
+/**
+ * Read the sandbox RAM buffer from an existing file
+ *
+ * @param fname		Filename containing memory (simple binary format)
+ * @return 0 if OK, -ve on error
+ */
+int os_read_ram_buf(const char *fname);
+
+/**
+ * Jump to a new executable image
+ *
+ * This uses exec() to run a new executable image, after putting it in a
+ * temporary file. The same arguments and environment are passed to this
+ * new image, with the addition of:
+ *
+ *	-j <filename>	Specifies the filename the image was written to. The
+ *			calling image may want to delete this at some point.
+ *	-m <filename>	Specifies the file containing the sandbox memory
+ *			(ram_buf) from this image, so that the new image can
+ *			have access to this. It also means that the original
+ *			memory filename passed to U-Boot will be left intact.
+ *
+ * @param dest		Buffer containing executable image
+ * @param size		Size of buffer
  */
-ssize_t os_get_filesize(const char *fname);
+int os_jump_to_image(const void *dest, int size);
 
 #endif