diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
index 0392afd9be..68c30afc48 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
@@ -102,8 +102,9 @@ static uint8_t mxs_get_bootmode_index(void)
 	return i;
 }
 
-void mxs_common_spl_init(const iomux_cfg_t *iomux_setup,
-			const unsigned int iomux_size)
+void mxs_common_spl_init(const uint32_t arg, const uint32_t *resptr,
+			 const iomux_cfg_t *iomux_setup,
+			 const unsigned int iomux_size)
 {
 	struct mxs_spl_data *data = (struct mxs_spl_data *)
 		((CONFIG_SYS_TEXT_BASE - sizeof(struct mxs_spl_data)) & ~0xf);
diff --git a/arch/arm/cpu/arm926ejs/mxs/start.S b/arch/arm/cpu/arm926ejs/mxs/start.S
index 94b2b3fd30..3e454ae1bc 100644
--- a/arch/arm/cpu/arm926ejs/mxs/start.S
+++ b/arch/arm/cpu/arm926ejs/mxs/start.S
@@ -152,39 +152,49 @@ _reset:
 	/*
 	 * Store all registers on old stack pointer, this will allow us later to
 	 * return to the BootROM and let the BootROM load U-Boot into RAM.
+	 *
+	 * WARNING: Register r0 and r1 are used by the BootROM to pass data
+	 *          to the called code. Register r0 will contain arbitrary
+	 *          data that are set in the BootStream. In case this code
+	 *          was started with CALL instruction, register r1 will contain
+	 *          pointer to the return value this function can then set.
+	 *          The code below MUST NOT CHANGE register r0 and r1 !
 	 */
 	push	{r0-r12,r14}
 
-	/* save control register c1 */
-	mrc	p15, 0, r0, c1, c0, 0
-	push	{r0}
+	/* Save control register c1 */
+	mrc	p15, 0, r2, c1, c0, 0
+	push	{r2}
 
-	/*
-	 * set the cpu to SVC32 mode and store old CPSR register content
-	 */
-	mrs	r0,cpsr
-	push	{r0}
-	bic	r0,r0,#0x1f
-	orr	r0,r0,#0xd3
-	msr	cpsr,r0
+	/* Set the cpu to SVC32 mode and store old CPSR register content. */
+	mrs	r2, cpsr
+	push	{r2}
+	bic	r2, r2, #0x1f
+	orr	r2, r2, #0xd3
+	msr	cpsr, r2
 
 	bl	board_init_ll
 
-	/*
-	 * restore bootrom's cpu mode (especially FIQ)
-	 */
-	pop	{r0}
-	msr	cpsr,r0
+	/* Restore BootROM's CPU mode (especially FIQ). */
+	pop	{r2}
+	msr	cpsr,r2
 
 	/*
-	 * restore c1 register
-	 * (especially set exception vector location back to
-	 * bootrom space which is required by bootrom for USB boot)
+	 * Restore c1 register. Especially set exception vector location
+	 * back to BootROM space which is required by bootrom for USB boot.
 	 */
-	pop	{r0}
-	mcr	p15, 0, r0, c1, c0, 0
+	pop	{r2}
+	mcr	p15, 0, r2, c1, c0, 0
 
 	pop	{r0-r12,r14}
+
+	/*
+	 * In case this code was started by the CALL instruction, the register
+	 * r0 is examined by the BootROM after this code returns. The value in
+	 * r0 must be set to 0 to indicate successful return.
+	 */
+	mov r0, #0
+
 	bx	lr
 
 _hang:
diff --git a/arch/arm/include/asm/arch-mxs/sys_proto.h b/arch/arm/include/asm/arch-mxs/sys_proto.h
index 1038592c92..43c7dd6bf1 100644
--- a/arch/arm/include/asm/arch-mxs/sys_proto.h
+++ b/arch/arm/include/asm/arch-mxs/sys_proto.h
@@ -28,8 +28,9 @@ int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int));
 #include <asm/arch/iomux-mx28.h>
 #endif
 
-void mxs_common_spl_init(const iomux_cfg_t *iomux_setup,
-			const unsigned int iomux_size);
+void mxs_common_spl_init(const uint32_t arg, const uint32_t *resptr,
+			 const iomux_cfg_t *iomux_setup,
+			 const unsigned int iomux_size);
 #endif
 
 struct mxs_pair {
diff --git a/board/bluegiga/apx4devkit/spl_boot.c b/board/bluegiga/apx4devkit/spl_boot.c
index 3b05baaa70..81419f9635 100644
--- a/board/bluegiga/apx4devkit/spl_boot.c
+++ b/board/bluegiga/apx4devkit/spl_boot.c
@@ -132,9 +132,9 @@ const iomux_cfg_t iomux_setup[] = {
 	MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
 };
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 
 	/* switch LED on */
 	gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
diff --git a/board/denx/m28evk/spl_boot.c b/board/denx/m28evk/spl_boot.c
index 525ba6ae75..5a1010e595 100644
--- a/board/denx/m28evk/spl_boot.c
+++ b/board/denx/m28evk/spl_boot.c
@@ -200,7 +200,7 @@ const iomux_cfg_t iomux_setup[] = {
 		(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP),
 };
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
diff --git a/board/freescale/mx23evk/spl_boot.c b/board/freescale/mx23evk/spl_boot.c
index 054ca0a93b..603f4dcfd1 100644
--- a/board/freescale/mx23evk/spl_boot.c
+++ b/board/freescale/mx23evk/spl_boot.c
@@ -129,7 +129,7 @@ void mxs_adjust_memory_params(uint32_t *dram_vals)
 	dram_vals[HW_DRAM_CTL14] = HW_DRAM_CTL14_CONFIG;
 }
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
diff --git a/board/freescale/mx28evk/iomux.c b/board/freescale/mx28evk/iomux.c
index 6ca842ba86..97c2376da1 100644
--- a/board/freescale/mx28evk/iomux.c
+++ b/board/freescale/mx28evk/iomux.c
@@ -200,7 +200,7 @@ void mxs_adjust_memory_params(uint32_t *dram_vals)
 	dram_vals[HW_DRAM_CTL29] = HW_DRAM_CTL29_CONFIG;
 }
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
diff --git a/board/olimex/mx23_olinuxino/spl_boot.c b/board/olimex/mx23_olinuxino/spl_boot.c
index 0a6630395d..5272dfa4e6 100644
--- a/board/olimex/mx23_olinuxino/spl_boot.c
+++ b/board/olimex/mx23_olinuxino/spl_boot.c
@@ -85,7 +85,7 @@ const iomux_cfg_t iomux_setup[] = {
 		(MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL),
 };
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
diff --git a/board/schulercontrol/sc_sps_1/spl_boot.c b/board/schulercontrol/sc_sps_1/spl_boot.c
index 1fe9224e5a..60195c3a7d 100644
--- a/board/schulercontrol/sc_sps_1/spl_boot.c
+++ b/board/schulercontrol/sc_sps_1/spl_boot.c
@@ -138,9 +138,9 @@ const iomux_cfg_t iomux_setup[] = {
 	MX28_PAD_GPMI_D06__GPIO_0_6 | MUX_CONFIG_LED,
 };
 
-void board_init_ll(void)
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
 {
-	mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
 
 void mxs_adjust_memory_params(uint32_t *dram_vals)