diff --git a/arch/arm/cpu/armv8/zynqmp/Kconfig b/arch/arm/cpu/armv8/zynqmp/Kconfig
index 1eedb39..a3baae4 100644
--- a/arch/arm/cpu/armv8/zynqmp/Kconfig
+++ b/arch/arm/cpu/armv8/zynqmp/Kconfig
@@ -41,6 +41,13 @@
 	  Based on this option include/configs/<CONFIG_SYS_CONFIG_NAME>.h header
 	  will be used for board configuration.
 
+config BOOT_INIT_FILE
+	string "boot.bin init register filename"
+	default ""
+	help
+	  Add register writes to boot.bin format (max 256 pairs).
+	  Expect a table of register-value pairs, e.g. "0x12345678 0x4321"
+
 config ZYNQMP_USB
 	bool "Configure ZynqMP USB"
 
diff --git a/arch/arm/mach-zynq/Kconfig b/arch/arm/mach-zynq/Kconfig
index a1175ee..44e16af 100644
--- a/arch/arm/mach-zynq/Kconfig
+++ b/arch/arm/mach-zynq/Kconfig
@@ -44,4 +44,11 @@
 config SYS_MALLOC_F_LEN
 	default 0x600
 
+config BOOT_INIT_FILE
+	string "boot.bin init register filename"
+	default ""
+	help
+	  Add register writes to boot.bin format (max 256 pairs).
+	  Expect a table of register-value pairs, e.g. "0x12345678 0x4321"
+
 endif
diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index e0b0117..03a2f06 100644
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -146,10 +146,10 @@
 	$(call if_changed,mkimage)
 else
 ifdef CONFIG_ARCH_ZYNQ
-MKIMAGEFLAGS_boot.bin = -T zynqimage
+MKIMAGEFLAGS_boot.bin = -T zynqimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE)
 endif
 ifdef CONFIG_ARCH_ZYNQMP
-MKIMAGEFLAGS_boot.bin = -T zynqmpimage
+MKIMAGEFLAGS_boot.bin = -T zynqmpimage -R $(srctree)/$(CONFIG_BOOT_INIT_FILE)
 endif
 
 spl/boot.bin: $(obj)/u-boot-spl.bin FORCE
diff --git a/tools/zynqimage.c b/tools/zynqimage.c
index c43bd5d..43876e7 100644
--- a/tools/zynqimage.c
+++ b/tools/zynqimage.c
@@ -222,6 +222,30 @@
 	return EXIT_FAILURE;
 }
 
+static void zynqimage_parse_initparams(struct zynq_header *zynqhdr,
+	const char *filename)
+{
+	/* Expect a table of register-value pairs, e.g. "0x12345678 0x4321" */
+	FILE *fp = fopen(filename, "r");
+	struct zynq_reginit reginit;
+	unsigned int reg_count = 0;
+	int r;
+
+	if (!fp) {
+		fprintf(stderr, "Cannot open initparams file: %s\n", filename);
+		exit(1);
+	}
+	do {
+		r = fscanf(fp, "%x %x", &reginit.address, &reginit.data);
+		if (r == 2) {
+			zynqhdr->register_init[reg_count] = reginit;
+			++reg_count;
+		}
+		r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */
+	} while ((r != EOF) && (reg_count < HEADER_REGINITS));
+	fclose(fp);
+}
+
 static void zynqimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 		struct image_tool_params *params)
 {
@@ -237,6 +261,10 @@
 	if (params->eflag)
 		zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep);
 
+	/* User can pass in text file with init list */
+	if (strlen(params->imagename2))
+		zynqimage_parse_initparams(zynqhdr, params->imagename2);
+
 	zynqhdr->checksum = zynqimage_checksum(zynqhdr);
 }
 
diff --git a/tools/zynqmpimage.c b/tools/zynqmpimage.c
index 3f28eb4..d08144c 100644
--- a/tools/zynqmpimage.c
+++ b/tools/zynqmpimage.c
@@ -234,6 +234,30 @@
 	return EXIT_FAILURE;
 }
 
+static void zynqmpimage_parse_initparams(struct zynqmp_header *zynqhdr,
+	const char *filename)
+{
+	/* Expect a table of register-value pairs, e.g. "0x12345678 0x4321" */
+	FILE *fp = fopen(filename, "r");
+	struct zynqmp_reginit reginit;
+	unsigned int reg_count = 0;
+	int r;
+
+	if (!fp) {
+		fprintf(stderr, "Cannot open initparams file: %s\n", filename);
+		exit(1);
+	}
+	do {
+		r = fscanf(fp, "%x %x", &reginit.address, &reginit.data);
+		if (r == 2) {
+			zynqhdr->register_init[reg_count] = reginit;
+			++reg_count;
+		}
+		r = fscanf(fp, "%*[^\n]\n"); /* Skip to next line */
+	} while ((r != EOF) && (reg_count < HEADER_REGINITS));
+	fclose(fp);
+}
+
 static void zynqmpimage_set_header(void *ptr, struct stat *sbuf, int ifd,
 		struct image_tool_params *params)
 {
@@ -250,6 +274,10 @@
 	if (params->eflag)
 		zynqhdr->image_load = cpu_to_le32((uint32_t)params->ep);
 
+	/* User can pass in text file with init list */
+	if (strlen(params->imagename2))
+		zynqmpimage_parse_initparams(zynqhdr, params->imagename2);
+
 	zynqhdr->checksum = zynqmpimage_checksum(zynqhdr);
 }