diff --git a/include/mmc.h b/include/mmc.h
index 233a1d6..52cacfd 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -79,6 +79,10 @@
 #define IS_SD(x)	((x)->version & SD_VERSION_SD)
 #define IS_MMC(x)	((x)->version & MMC_VERSION_MMC)
 
+#define CID_MANFID_MICRON       0x13
+#define CID_MANFID_SAMSUNG      0x15
+#define CID_MANFID_SANDISK      0x45
+
 #define MMC_DATA_READ		1
 #define MMC_DATA_WRITE		2
 
@@ -112,6 +116,7 @@
 
 #define MMC_CMD62_ARG1			0xefac62ec
 #define MMC_CMD62_ARG2			0xcbaea7
+#define MMC_CMD62_ARG_SANDISK		0x254ddec4
 
 #define SD_CMD_SEND_RELATIVE_ADDR	3
 #define SD_CMD_SWITCH_FUNC		6
@@ -205,6 +210,7 @@
 /*
  * EXT_CSD fields
  */
+#define EXT_CSD_BOOT_SIZE_MULT_MICRON	125	/* R/W, vendor specific field */
 #define EXT_CSD_ENH_START_ADDR		136	/* R/W */
 #define EXT_CSD_ENH_SIZE_MULT		140	/* R/W */
 #define EXT_CSD_GP_SIZE_MULT		143	/* R/W */