diff --git a/tools/rkcommon.c b/tools/rkcommon.c
index 9e2173f..72621fd 100644
--- a/tools/rkcommon.c
+++ b/tools/rkcommon.c
@@ -40,16 +40,84 @@
 	uint8_t reserved2[2];
 };
 
+/**
+ * struct spl_info - spl info for each chip
+ *
+ * @imagename:		Image name(passed by "mkimage -n")
+ * @spl_hdr:		Boot ROM requires a 4-bytes spl header
+ * @spl_size:		Spl size(include extra 4-bytes spl header)
+ */
+struct spl_info {
+	const char *imagename;
+	const char *spl_hdr;
+	const uint32_t spl_size;
+};
+
+static struct spl_info spl_infos[] = {
+	{ "rk3036", "RK30", 0x1000 },
+	{ "rk3288", "RK32", 0x8000 },
+};
+
 static unsigned char rc4_key[16] = {
 	124, 78, 3, 4, 85, 5, 9, 7,
 	45, 44, 123, 56, 23, 13, 23, 17
 };
 
+static struct spl_info *rkcommon_get_spl_info(char *imagename)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
+		if (!strncmp(imagename, spl_infos[i].imagename, 6))
+			return spl_infos + i;
+
+	return NULL;
+}
+
+int rkcommon_check_params(struct image_tool_params *params)
+{
+	int i;
+
-int rkcommon_set_header(void *buf, uint file_size)
+	if (rkcommon_get_spl_info(params->imagename) != NULL)
+		return 0;
+
+	fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
+		strlen(params->imagename) > 0 ? params->imagename : "NULL");
+
+	fprintf(stderr, "Available imagename:");
+	for (i = 0; i < ARRAY_SIZE(spl_infos); i++)
+		fprintf(stderr, "\t%s", spl_infos[i].imagename);
+	fprintf(stderr, "\n");
+
+	return -1;
+}
+
+const char *rkcommon_get_spl_hdr(struct image_tool_params *params)
+{
+	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+	/*
+	 * info would not be NULL, because of we checked params before.
+	 */
+	return info->spl_hdr;
+}
+
+int rkcommon_get_spl_size(struct image_tool_params *params)
+{
+	struct spl_info *info = rkcommon_get_spl_info(params->imagename);
+
+	/*
+	 * info would not be NULL, because of we checked params before.
+	 */
+	return info->spl_size;
+}
+
+int rkcommon_set_header(void *buf, uint file_size,
+			struct image_tool_params *params)
 {
 	struct header0_info *hdr;
 
-	if (file_size > RK_MAX_CODE1_SIZE)
+	if (file_size > rkcommon_get_spl_size(params))
 		return -ENOSPC;
 
 	memset(buf,  '\0', RK_INIT_OFFSET * RK_BLK_SIZE);
diff --git a/tools/rkcommon.h b/tools/rkcommon.h
index 222156e..c69540f 100644
--- a/tools/rkcommon.h
+++ b/tools/rkcommon.h
@@ -12,10 +12,38 @@
 	RK_BLK_SIZE		= 512,
 	RK_INIT_OFFSET		= 4,
 	RK_MAX_BOOT_SIZE	= 512 << 10,
-	RK_MAX_CODE1_SIZE	= 32 << 10,
+	RK_SPL_HDR_START	= RK_INIT_OFFSET * RK_BLK_SIZE,
+	RK_SPL_HDR_SIZE		= 4,
+	RK_SPL_START		= RK_SPL_HDR_START + RK_SPL_HDR_SIZE,
+	RK_IMAGE_HEADER_LEN	= RK_SPL_START,
 };
 
 /**
+ * rkcommon_check_params() - check params
+ *
+ * @return 0 if OK, -1 if ERROR.
+ */
+int rkcommon_check_params(struct image_tool_params *params);
+
+/**
+ * rkcommon_get_spl_hdr() - get 4-bytes spl hdr for a Rockchip boot image
+ *
+ * Rockchip's bootrom requires the spl loader to start with a 4-bytes
+ * header. The content of this header depends on the chip type.
+ */
+const char *rkcommon_get_spl_hdr(struct image_tool_params *params);
+
+/**
+ * rkcommon_get_spl_size() - get spl size for a Rockchip boot image
+ *
+ * Different chip may have different sram size. And if we want to jump
+ * back to the bootrom after spl, we may need to reserve some sram space
+ * for the bootrom.
+ * The spl loader size should be sram size minus reserved size(if needed)
+ */
+int rkcommon_get_spl_size(struct image_tool_params *params);
+
+/**
  * rkcommon_set_header() - set up the header for a Rockchip boot image
  *
  * This sets up a 2KB header which can be interpreted by the Rockchip boot ROM.
@@ -24,6 +52,7 @@
  * @file_size:	Size of the file we want the boot ROM to load, in bytes
  * @return 0 if OK, -ENOSPC if too large
  */
-int rkcommon_set_header(void *buf, uint file_size);
+int rkcommon_set_header(void *buf, uint file_size,
+			struct image_tool_params *params);
 
 #endif
diff --git a/tools/rkimage.c b/tools/rkimage.c
index 7b292f4..f9fdcfa 100644
--- a/tools/rkimage.c
+++ b/tools/rkimage.c
@@ -9,6 +9,7 @@
 
 #include "imagetool.h"
 #include <image.h>
+#include "rkcommon.h"
 
 static uint32_t header;
 
@@ -30,7 +31,8 @@
 static void rkimage_set_header(void *buf, struct stat *sbuf, int ifd,
 			       struct image_tool_params *params)
 {
-	memcpy(buf, "RK32", 4);
+	memcpy(buf + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params),
+	       RK_SPL_HDR_SIZE);
 }
 
 static int rkimage_extract_subimage(void *buf, struct image_tool_params *params)
diff --git a/tools/rksd.c b/tools/rksd.c
index 39f5c75..a2baa74 100644
--- a/tools/rksd.c
+++ b/tools/rksd.c
@@ -13,18 +13,7 @@
 #include "mkimage.h"
 #include "rkcommon.h"
 
-enum {
-	RKSD_SPL_HDR_START	= RK_INIT_OFFSET * RK_BLK_SIZE,
-	RKSD_SPL_START		= RKSD_SPL_HDR_START + 4,
-	RKSD_HEADER_LEN		= RKSD_SPL_START,
-};
-
-static char dummy_hdr[RKSD_HEADER_LEN];
-
-static int rksd_check_params(struct image_tool_params *params)
-{
-	return 0;
-}
+static char dummy_hdr[RK_IMAGE_HEADER_LEN];
 
 static int rksd_verify_header(unsigned char *buf,  int size,
 				 struct image_tool_params *params)
@@ -42,15 +31,16 @@
 	unsigned int size;
 	int ret;
 
-	size = params->file_size - RKSD_SPL_HDR_START;
-	ret = rkcommon_set_header(buf, size);
+	size = params->file_size - RK_SPL_HDR_START;
+	ret = rkcommon_set_header(buf, size, params);
 	if (ret) {
 		/* TODO(sjg@chromium.org): This method should return an error */
 		printf("Warning: SPL image is too large (size %#x) and will not boot\n",
 		       size);
 	}
 
-	memcpy(buf + RKSD_SPL_HDR_START, "RK32", 4);
+	memcpy(buf + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params),
+	       RK_SPL_HDR_SIZE);
 }
 
 static int rksd_extract_subimage(void *buf,  struct image_tool_params *params)
@@ -72,7 +62,7 @@
 {
 	int pad_size;
 
-	pad_size = RKSD_SPL_HDR_START + RK_MAX_CODE1_SIZE;
+	pad_size = RK_SPL_HDR_START + rkcommon_get_spl_size(params);
 	debug("pad_size %x\n", pad_size);
 
 	return pad_size - params->file_size;
@@ -84,9 +74,9 @@
 U_BOOT_IMAGE_TYPE(
 	rksd,
 	"Rockchip SD Boot Image support",
-	RKSD_HEADER_LEN,
+	RK_IMAGE_HEADER_LEN,
 	dummy_hdr,
-	rksd_check_params,
+	rkcommon_check_params,
 	rksd_verify_header,
 	rksd_print_header,
 	rksd_set_header,
diff --git a/tools/rkspi.c b/tools/rkspi.c
index eb8119b..800e235 100644
--- a/tools/rkspi.c
+++ b/tools/rkspi.c
@@ -14,18 +14,10 @@
 #include "rkcommon.h"
 
 enum {
-	RKSPI_SPL_HDR_START	= RK_INIT_OFFSET * RK_BLK_SIZE,
-	RKSPI_SPL_START		= RKSPI_SPL_HDR_START + 4,
-	RKSPI_HEADER_LEN	= RKSPI_SPL_START,
 	RKSPI_SECT_LEN		= RK_BLK_SIZE * 4,
 };
 
-static char dummy_hdr[RKSPI_HEADER_LEN];
-
-static int rkspi_check_params(struct image_tool_params *params)
-{
-	return 0;
-}
+static char dummy_hdr[RK_IMAGE_HEADER_LEN];
 
 static int rkspi_verify_header(unsigned char *buf, int size,
 			       struct image_tool_params *params)
@@ -45,7 +37,7 @@
 	int ret;
 
 	size = params->orig_file_size;
-	ret = rkcommon_set_header(buf, size);
+	ret = rkcommon_set_header(buf, size, params);
 	debug("size %x\n", size);
 	if (ret) {
 		/* TODO(sjg@chromium.org): This method should return an error */
@@ -53,7 +45,8 @@
 		       size);
 	}
 
-	memcpy(buf + RKSPI_SPL_HDR_START, "RK32", 4);
+	memcpy(buf + RK_SPL_HDR_START, rkcommon_get_spl_hdr(params),
+	       RK_SPL_HDR_SIZE);
 
 	/*
 	 * Spread the image out so we only use the first 2KB of each 4KB
@@ -89,12 +82,12 @@
 {
 	int pad_size;
 
-	pad_size = (RK_MAX_CODE1_SIZE + 0x7ff) / 0x800 * 0x800;
+	pad_size = (rkcommon_get_spl_size(params) + 0x7ff) / 0x800 * 0x800;
 	params->orig_file_size = pad_size;
 
 	/* We will double the image size due to the SPI format */
 	pad_size *= 2;
-	pad_size += RKSPI_SPL_HDR_START;
+	pad_size += RK_SPL_HDR_START;
 	debug("pad_size %x\n", pad_size);
 
 	return pad_size - params->file_size;
@@ -106,9 +99,9 @@
 U_BOOT_IMAGE_TYPE(
 	rkspi,
 	"Rockchip SPI Boot Image support",
-	RKSPI_HEADER_LEN,
+	RK_IMAGE_HEADER_LEN,
 	dummy_hdr,
-	rkspi_check_params,
+	rkcommon_check_params,
 	rkspi_verify_header,
 	rkspi_print_header,
 	rkspi_set_header,