imx: imximage: add new CHECK/CLR BIT command

* Extend imximage DCD version 2 to support DCD commands
  CMD_WRITE_CLR_BIT 4 [address] [mask bit] means:
    while ((*address & ~mask) != 0);
  CMD_CHECK_BITS_SET 4 [address] [mask bit] means:
    while ((*address & mask) != mask);
  CMD_CHECK_BITS_CLR 4 [address] [mask bit] means:
    *address = *address & ~mask;
* Add set_dcd_param_v2 helper function to set DCD
  command parameters

Signed-off-by: Adrian Alonso <aalonso@freescale.com>
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
diff --git a/tools/imximage.h b/tools/imximage.h
index a913329..d41c74f 100644
--- a/tools/imximage.h
+++ b/tools/imximage.h
@@ -42,19 +42,27 @@
 #define FLASH_LOADSIZE_SATA		FLASH_LOADSIZE_STANDARD
 #define FLASH_LOADSIZE_QSPI		0x0 /* entire image */
 
-#define IVT_HEADER_TAG 0xD1
-#define IVT_VERSION 0x40
-#define DCD_HEADER_TAG 0xD2
-#define DCD_COMMAND_TAG 0xCC
-#define DCD_VERSION 0x40
-#define DCD_COMMAND_PARAM 0x4
+/* Command tags and parameters */
+#define IVT_HEADER_TAG			0xD1
+#define IVT_VERSION			0x40
+#define DCD_HEADER_TAG			0xD2
+#define DCD_VERSION			0x40
+#define DCD_WRITE_DATA_COMMAND_TAG	0xCC
+#define DCD_WRITE_DATA_PARAM		0x4
+#define DCD_WRITE_CLR_BIT_PARAM	0xC
+#define DCD_CHECK_DATA_COMMAND_TAG	0xCF
+#define DCD_CHECK_BITS_SET_PARAM	0x14
+#define DCD_CHECK_BITS_CLR_PARAM	0x04
 
 enum imximage_cmd {
 	CMD_INVALID,
 	CMD_IMAGE_VERSION,
 	CMD_BOOT_FROM,
 	CMD_BOOT_OFFSET,
-	CMD_DATA,
+	CMD_WRITE_DATA,
+	CMD_WRITE_CLR_BIT,
+	CMD_CHECK_BITS_SET,
+	CMD_CHECK_BITS_CLR,
 	CMD_CSF,
 };
 
@@ -168,6 +176,9 @@
 					int fld, uint32_t value,
 					uint32_t off);
 
+typedef void (*set_dcd_param_t)(struct imx_header *imxhdr, uint32_t dcd_len,
+					int32_t cmd);
+
 typedef void (*set_dcd_rst_t)(struct imx_header *imxhdr,
 					uint32_t dcd_len,
 					char *name, int lineno);