diff --git a/tools/imagetool.h b/tools/imagetool.h
index 2689a4004a..e1c778b0df 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -253,6 +253,7 @@ void pbl_load_uboot(int fd, struct image_tool_params *mparams);
 int zynqmpbif_copy_image(int fd, struct image_tool_params *mparams);
 int imx8image_copy_image(int fd, struct image_tool_params *mparams);
 int imx8mimage_copy_image(int fd, struct image_tool_params *mparams);
+int rockchip_copy_image(int fd, struct image_tool_params *mparams);
 
 #define ___cat(a, b) a ## b
 #define __cat(a, b) ___cat(a, b)
diff --git a/tools/mkimage.c b/tools/mkimage.c
index 4217188310..5f51d2cc89 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -544,6 +544,14 @@ int main(int argc, char **argv)
 			ret = imx8mimage_copy_image(ifd, &params);
 			if (ret)
 				return ret;
+		} else if ((params.type == IH_TYPE_RKSD) ||
+				(params.type == IH_TYPE_RKSPI)) {
+			/* Rockchip has special Image format */
+			int ret;
+
+			ret = rockchip_copy_image(ifd, &params);
+			if (ret)
+				return ret;
 		} else {
 			copy_file(ifd, params.datafile, pad_len);
 		}
diff --git a/tools/rkcommon.c b/tools/rkcommon.c
index 0d908daee8..1095aa3426 100644
--- a/tools/rkcommon.c
+++ b/tools/rkcommon.c
@@ -80,6 +80,24 @@ static struct spl_info spl_infos[] = {
 	{ "rv1108", "RK11", 0x1800, false },
 };
 
+/**
+ * struct spl_params - spl params parsed in check_params()
+ *
+ * @init_file:		Init data file path
+ * @init_size:		Aligned size of init data in bytes
+ * @boot_file:		Boot data file path
+ * @boot_size:		Aligned size of boot data in bytes
+ */
+
+struct spl_params {
+	char *init_file;
+	uint32_t init_size;
+	char *boot_file;
+	uint32_t boot_size;
+};
+
+static struct spl_params spl_params = { 0 };
+
 static unsigned char rc4_key[16] = {
 	124, 78, 3, 4, 85, 5, 9, 7,
 	45, 44, 123, 56, 23, 13, 23, 17
@@ -99,12 +117,25 @@ static struct spl_info *rkcommon_get_spl_info(char *imagename)
 	return NULL;
 }
 
-int rkcommon_check_params(struct image_tool_params *params)
+static int rkcommon_get_aligned_size(struct image_tool_params *params,
+				     const char *fname)
 {
-	int i;
+	int size;
 
-	if (rkcommon_get_spl_info(params->imagename) != NULL)
-		return EXIT_SUCCESS;
+	size = imagetool_get_filesize(params, fname);
+	if (size < 0)
+		return -1;
+
+	/*
+	 * Pad to a 2KB alignment, as required for init/boot size by the ROM
+	 * (see https://lists.denx.de/pipermail/u-boot/2017-May/293268.html)
+	 */
+	return ROUND(size, RK_SIZE_ALIGN);
+}
+
+int rkcommon_check_params(struct image_tool_params *params)
+{
+	int i, spl_size;
 
 	/*
 	 * If this is a operation (list or extract), the don't require
@@ -113,6 +144,41 @@ int rkcommon_check_params(struct image_tool_params *params)
 	if (params->lflag || params->iflag)
 		return EXIT_SUCCESS;
 
+	if (!rkcommon_get_spl_info(params->imagename))
+		goto err_spl_info;
+
+	spl_params.init_file = params->datafile;
+
+	spl_params.boot_file = strchr(spl_params.init_file, ':');
+	if (spl_params.boot_file) {
+		*spl_params.boot_file = '\0';
+		spl_params.boot_file += 1;
+	}
+
+	spl_params.init_size =
+		rkcommon_get_aligned_size(params, spl_params.init_file);
+	if (spl_params.init_size < 0)
+		return EXIT_FAILURE;
+
+	/* Boot file is optional, and only for back-to-bootrom functionality. */
+	if (spl_params.boot_file) {
+		spl_params.boot_size =
+			rkcommon_get_aligned_size(params, spl_params.boot_file);
+		if (spl_params.boot_size < 0)
+			return EXIT_FAILURE;
+	}
+
+	spl_size = RK_SPL_HDR_START + spl_params.init_size;
+	if (spl_size > rkcommon_get_spl_size(params)) {
+		fprintf(stderr,
+			"Error: SPL image is too large (size %#x than %#x)\n",
+			spl_size, rkcommon_get_spl_size(params));
+		return EXIT_FAILURE;
+	}
+
+	return EXIT_SUCCESS;
+
+err_spl_info:
 	fprintf(stderr, "ERROR: imagename (%s) is not supported!\n",
 		params->imagename ? params->imagename : "NULL");
 
@@ -155,8 +221,7 @@ bool rkcommon_need_rc4_spl(struct image_tool_params *params)
 	return info->spl_rc4;
 }
 
-static void rkcommon_set_header0(void *buf, uint file_size,
-				 struct image_tool_params *params)
+static void rkcommon_set_header0(void *buf, struct image_tool_params *params)
 {
 	struct header0_info *hdr = buf;
 
@@ -164,16 +229,8 @@ static void rkcommon_set_header0(void *buf, uint file_size,
 	hdr->signature = RK_SIGNATURE;
 	hdr->disable_rc4 = !rkcommon_need_rc4_spl(params);
 	hdr->init_offset = RK_INIT_OFFSET;
+	hdr->init_size = spl_params.init_size / RK_BLK_SIZE;
 
-	hdr->init_size = DIV_ROUND_UP(file_size, RK_BLK_SIZE);
-	/*
-	 * The init_size has to be a multiple of 4 blocks (i.e. of 2K)
-	 * or the BootROM will not boot the image.
-	 *
-	 * Note: To verify that this is not a legacy constraint, we
-	 *       rechecked this against the RK3399 BootROM.
-	 */
-	hdr->init_size = ROUND(hdr->init_size, 4);
 	/*
 	 * init_boot_size needs to be set, as it is read by the BootROM
 	 * to determine the size of the next-stage bootloader (e.g. U-Boot
@@ -182,20 +239,22 @@ static void rkcommon_set_header0(void *buf, uint file_size,
 	 * see https://lists.denx.de/pipermail/u-boot/2017-May/293267.html
 	 * for a more detailed explanation by Andy Yan
 	 */
-	hdr->init_boot_size = hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
+	if (spl_params.boot_file)
+		hdr->init_boot_size =
+			hdr->init_size + spl_params.boot_size / RK_BLK_SIZE;
+	else
+		hdr->init_boot_size =
+			hdr->init_size + RK_MAX_BOOT_SIZE / RK_BLK_SIZE;
 
 	rc4_encode(buf, RK_BLK_SIZE, rc4_key);
 }
 
-int rkcommon_set_header(void *buf, uint file_size,
-			struct image_tool_params *params)
+void rkcommon_set_header(void *buf,  struct stat *sbuf,  int ifd,
+			 struct image_tool_params *params)
 {
 	struct header1_info *hdr = buf + RK_SPL_HDR_START;
 
-	if (file_size > rkcommon_get_spl_size(params))
-		return -ENOSPC;
-
-	rkcommon_set_header0(buf, file_size, params);
+	rkcommon_set_header0(buf, params);
 
 	/* Set up the SPL name (i.e. copy spl_hdr over) */
 	memcpy(&hdr->magic, rkcommon_get_spl_hdr(params), RK_SPL_HDR_SIZE);
@@ -203,8 +262,6 @@ int rkcommon_set_header(void *buf, uint file_size,
 	if (rkcommon_need_rc4_spl(params))
 		rkcommon_rc4_encode_spl(buf, RK_SPL_HDR_START,
 					params->file_size - RK_SPL_HDR_START);
-
-	return 0;
 }
 
 static inline unsigned rkcommon_offset_to_spi(unsigned offset)
@@ -296,7 +353,7 @@ void rkcommon_print_header(const void *buf)
 	struct header0_info header0;
 	struct spl_info *spl_info;
 	uint8_t image_type;
-	int ret;
+	int ret, boot_size;
 
 	ret = rkcommon_parse_header(buf, &header0, &spl_info);
 
@@ -314,7 +371,11 @@ void rkcommon_print_header(const void *buf)
 	printf("Image Type:   Rockchip %s (%s) boot image\n",
 	       spl_info->spl_hdr,
 	       (image_type == IH_TYPE_RKSD) ? "SD/MMC" : "SPI");
-	printf("Data Size:    %d bytes\n", header0.init_size * RK_BLK_SIZE);
+	printf("Init Data Size: %d bytes\n", header0.init_size * RK_BLK_SIZE);
+
+	boot_size = (header0.init_boot_size - header0.init_size) * RK_BLK_SIZE;
+	if (boot_size != RK_MAX_BOOT_SIZE)
+		printf("Boot Data Size: %d bytes\n", boot_size);
 }
 
 void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
@@ -331,12 +392,8 @@ void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size)
 }
 
 int rkcommon_vrec_header(struct image_tool_params *params,
-			 struct image_type_params *tparams,
-			 unsigned int alignment)
+			 struct image_type_params *tparams)
 {
-	unsigned int  unpadded_size;
-	unsigned int  padded_size;
-
 	/*
 	 * The SPL image looks as follows:
 	 *
@@ -362,19 +419,118 @@ int rkcommon_vrec_header(struct image_tool_params *params,
 
 	/* Allocate, clear and install the header */
 	tparams->hdr = malloc(tparams->header_size);
-	if (!tparams->hdr)
-		return -ENOMEM;
+	if (!tparams->hdr) {
+		fprintf(stderr, "%s: Can't alloc header: %s\n",
+			params->cmdname, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
 	memset(tparams->hdr, 0, tparams->header_size);
 
 	/*
-	 * If someone passed in 0 for the alignment, we'd better handle
-	 * it correctly...
+	 * We need to store the original file-size (i.e. before padding), as
+	 * imagetool does not set this during its adjustment of file_size.
 	 */
-	if (!alignment)
-		alignment = 1;
+	params->orig_file_size = tparams->header_size +
+		spl_params.init_size + spl_params.boot_size;
+
+	params->file_size = ROUND(params->orig_file_size, RK_SIZE_ALIGN);
+
+	/* Ignoring pad len, since we are using our own copy_image() */
+	return 0;
+}
+
+static int pad_file(struct image_tool_params *params, int ifd, int pad)
+{
+	uint8_t zeros[4096];
+
+	memset(zeros, 0, sizeof(zeros));
+
+	while (pad > 0) {
+		int todo = sizeof(zeros);
+
+		if (todo > pad)
+			todo = pad;
+		if (write(ifd, (char *)&zeros, todo) != todo) {
+			fprintf(stderr, "%s: Write error on %s: %s\n",
+				params->cmdname, params->imagefile,
+				strerror(errno));
+			return -1;
+		}
+		pad -= todo;
+	}
+
+	return 0;
+}
+
+static int copy_file(struct image_tool_params *params, int ifd,
+		     const char *file, int padded_size)
+{
+	int dfd;
+	struct stat sbuf;
+	unsigned char *ptr;
+	int size;
+
+	if (params->vflag)
+		fprintf(stderr, "Adding Image %s\n", file);
+
+	dfd = open(file, O_RDONLY | O_BINARY);
+	if (dfd < 0) {
+		fprintf(stderr, "%s: Can't open %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		return -1;
+	}
 
-	unpadded_size = tparams->header_size + params->file_size;
-	padded_size = ROUND(unpadded_size, alignment);
+	if (fstat(dfd, &sbuf) < 0) {
+		fprintf(stderr, "%s: Can't stat %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		goto err_close;
+	}
+
+	if (params->vflag)
+		fprintf(stderr, "Size %u(pad to %u)\n",
+			(int)sbuf.st_size, padded_size);
+
+	ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, dfd, 0);
+	if (ptr == MAP_FAILED) {
+		fprintf(stderr, "%s: Can't read %s: %s\n",
+			params->cmdname, file, strerror(errno));
+		goto err_munmap;
+	}
+
+	size = sbuf.st_size;
+	if (write(ifd, ptr, size) != size) {
+		fprintf(stderr, "%s: Write error on %s: %s\n",
+			params->cmdname, params->imagefile, strerror(errno));
+		goto err_munmap;
+	}
+
+	munmap((void *)ptr, sbuf.st_size);
+	close(dfd);
+	return pad_file(params, ifd, padded_size - size);
+
+err_munmap:
+	munmap((void *)ptr, sbuf.st_size);
+err_close:
+	close(dfd);
+	return -1;
+}
+
+int rockchip_copy_image(int ifd, struct image_tool_params *params)
+{
+	int ret;
+
+	ret = copy_file(params, ifd, spl_params.init_file,
+			spl_params.init_size);
+	if (ret)
+		return ret;
+
+	if (spl_params.boot_file) {
+		ret = copy_file(params, ifd, spl_params.boot_file,
+				spl_params.boot_size);
+		if (ret)
+			return ret;
+	}
 
-	return padded_size - unpadded_size;
+	return pad_file(params, ifd,
+			params->file_size - params->orig_file_size);
 }
diff --git a/tools/rkcommon.h b/tools/rkcommon.h
index 47f47a52aa..93518824a5 100644
--- a/tools/rkcommon.h
+++ b/tools/rkcommon.h
@@ -9,13 +9,11 @@
 
 enum {
 	RK_BLK_SIZE		= 512,
-	RK_INIT_SIZE_ALIGN      = 2048,
+	RK_SIZE_ALIGN		= 2048,
 	RK_INIT_OFFSET		= 4,
 	RK_MAX_BOOT_SIZE	= 512 << 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,
 };
 
 /**
@@ -49,11 +47,9 @@ int rkcommon_get_spl_size(struct image_tool_params *params);
  * This sets up a 2KB header which can be interpreted by the Rockchip boot ROM.
  *
  * @buf:	Pointer to header place (must be at least 2KB in size)
- * @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,
-			struct image_tool_params *params);
+void rkcommon_set_header(void *buf,  struct stat *sbuf,  int ifd,
+			 struct image_tool_params *params);
 
 /**
  * rkcommon_verify_header() - verify the header for a Rockchip boot image
@@ -102,14 +98,10 @@ void rkcommon_rc4_encode_spl(void *buf, unsigned int offset, unsigned int size);
  * @params:     Pointer to the tool params structure
  * @tparams:    Pointer tot the image type structure (for setting
  *              the header and header_size)
- * @alignment:  Alignment (a power of two) that the image should be
- *              padded to (e.g. 512 if we want to align with SD/MMC
- *              blocksizes or 2048 for the SPI format)
  *
- * @return bytes of padding required/added (does not include the header_size)
+ * @return 0 (always)
  */
 int rkcommon_vrec_header(struct image_tool_params *params,
-			 struct image_type_params *tparams,
-			 unsigned int alignment);
+			 struct image_type_params *tparams);
 
 #endif
diff --git a/tools/rksd.c b/tools/rksd.c
index 24411d863a..7d46a1b07b 100644
--- a/tools/rksd.c
+++ b/tools/rksd.c
@@ -12,27 +12,6 @@
 #include "mkimage.h"
 #include "rkcommon.h"
 
-static void rksd_set_header(void *buf,  struct stat *sbuf,  int ifd,
-			    struct image_tool_params *params)
-{
-	unsigned int size;
-	int ret;
-
-	/*
-	 * We need to calculate this using 'RK_SPL_HDR_START' and not using
-	 * 'tparams->header_size', as the additional byte inserted when
-	 * 'is_boot0' is true counts towards the payload (and not towards the
-	 * header).
-	 */
-	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);
-	}
-}
-
 static int rksd_check_image_type(uint8_t type)
 {
 	if (type == IH_TYPE_RKSD)
@@ -41,16 +20,6 @@ static int rksd_check_image_type(uint8_t type)
 		return EXIT_FAILURE;
 }
 
-static int rksd_vrec_header(struct image_tool_params *params,
-			    struct image_type_params *tparams)
-{
-	/*
-	 * Pad to a 2KB alignment, as required for init_size by the ROM
-	 * (see https://lists.denx.de/pipermail/u-boot/2017-May/293268.html)
-	 */
-	return rkcommon_vrec_header(params, tparams, RK_INIT_SIZE_ALIGN);
-}
-
 /*
  * rk_sd parameters
  */
@@ -62,9 +31,9 @@ U_BOOT_IMAGE_TYPE(
 	rkcommon_check_params,
 	rkcommon_verify_header,
 	rkcommon_print_header,
-	rksd_set_header,
+	rkcommon_set_header,
 	NULL,
 	rksd_check_image_type,
 	NULL,
-	rksd_vrec_header
+	rkcommon_vrec_header
 );
diff --git a/tools/rkspi.c b/tools/rkspi.c
index faa18fcd18..f2530f7bde 100644
--- a/tools/rkspi.c
+++ b/tools/rkspi.c
@@ -21,22 +21,20 @@ static void rkspi_set_header(void *buf, struct stat *sbuf, int ifd,
 {
 	int sector;
 	unsigned int size;
-	int ret;
 
 	size = params->orig_file_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 */
-		printf("Warning: SPL image is too large (size %#x) and will "
-		       "not boot\n", size);
-	}
+
+	rkcommon_set_header(buf, sbuf, ifd, params);
 
 	/*
 	 * Spread the image out so we only use the first 2KB of each 4KB
 	 * region. This is a feature of the SPI format required by the Rockchip
 	 * boot ROM. Its rationale is unknown.
 	 */
+	if (params->vflag)
+		fprintf(stderr, "Spreading spi image from %u to %u\n",
+			size, params->file_size);
+
 	for (sector = size / RKSPI_SECT_LEN - 1; sector >= 0; sector--) {
 		debug("sector %u\n", sector);
 		memmove(buf + sector * RKSPI_SECT_LEN * 2,
@@ -56,35 +54,23 @@ static int rkspi_check_image_type(uint8_t type)
 }
 
 /*
- * The SPI payload needs to be padded out to make space for odd half-sector
- * layout used in flash (i.e. only the first 2K of each 4K sector is used).
+ * The SPI payload needs to make space for odd half-sector layout used in flash
+ * (i.e. only the first 2K of each 4K sector is used).
  */
 static int rkspi_vrec_header(struct image_tool_params *params,
 			     struct image_type_params *tparams)
 {
-	int padding = rkcommon_vrec_header(params, tparams, RK_INIT_SIZE_ALIGN);
-	/*
-	 * The file size has not been adjusted at this point (our caller will
-	 * eventually add the header/padding to the file_size), so we need to
-	 * add up the header_size, file_size and padding ourselves.
-	 */
-	int padded_size = tparams->header_size + params->file_size + padding;
-
-	/*
-	 * We need to store the original file-size (i.e. before padding), as
-	 * imagetool does not set this during its adjustment of file_size.
-	 */
-	params->orig_file_size = padded_size;
+	rkcommon_vrec_header(params, tparams);
 
 	/*
 	 * Converting to the SPI format (i.e. splitting each 4K page into two
 	 * 2K subpages and then padding these 2K pages up to take a complete
-	 * 4K sector again) will will double the image size.
-	 *
-	 * Thus we return the padded_size as an additional padding requirement
-	 * (be sure to add this to the padding returned from the common code).
+	 * 4K sector again) which will double the image size.
 	 */
-	return padded_size + padding;
+	params->file_size = ROUND(params->file_size, RKSPI_SECT_LEN) << 1;
+
+	/* Ignoring pad len, since we are using our own copy_image() */
+	return 0;
 }
 
 /*
