wandboard: Switch to SPL support

Currently we need to build one U-boot image for each of the wandboard
variants: quad, dual-lite and solo.

By switching to SPL we can support all these variants with a single binary,
which is very convenient.

Based on the work from Richard Hu.

Tested kernel booting on the three boards.

Signed-off-by: Richard Hu <hakahu@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: Vagrant Cascadian <vagrant@aikidev.net>
Reviewed-by: Stefano Babic <sbabic@denx.de>

arch/arm/Kconfig

@@ -499,6 +499,7 @@ config TARGET_UDOO
 config TARGET_WANDBOARD
 	bool "Support wandboard"
 	select CPU_V7
+	select SUPPORT_SPL
 
 config TARGET_WARP
 	bool "Support WaRP"

board/wandboard/MAINTAINERS

@@ -3,6 +3,4 @@ M:	Fabio Estevam <fabio.estevam@freescale.com>
 S:	Maintained
 F:	board/wandboard/
 F:	include/configs/wandboard.h
-F:	configs/wandboard_dl_defconfig
-F:	configs/wandboard_quad_defconfig
-F:	configs/wandboard_solo_defconfig
+F:	configs/wandboard_defconfig

board/wandboard/Makefile

@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y  := wandboard.o
+obj-y  := wandboard.o spl.o

board/wandboard/README

@@ -12,31 +12,25 @@ http://www.wandboard.org/
 Building U-boot for Wandboard
 -----------------------------
 
-To build U-Boot for the Wandboard Dual Lite version:
+To build U-Boot for the Wandboard:
 
-$ make wandboard_dl_config
-$ make
-
-To build U-Boot for the Wandboard Solo version:
-
-$ make wandboard_solo_config
-$ make
-
-To build U-Boot for the Wandboard Quad version:
-
-$ make wandboard_quad_config
+$ make wandboard_config
 $ make
 
 Flashing U-boot into the SD card
 --------------------------------
 
-- After the 'make' command completes, the generated 'u-boot.imx' binary must be
+- After the 'make' command completes, the generated 'SPL' binary must be
 flashed into the SD card;
 
-$ sudo dd if=u-boot.imx of=/dev/mmcblk0 bs=512 seek=2; sync
+$ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
 
 (Note - the SD card node may vary, so adjust this as needed).
 
+- Flash the u-boot.img image into the SD card:
+
+sudo dd if=u-boot.img of=/dev/mmcblk0 bs=1k seek=69; sync
+
 - Insert the SD card into the slot located in the bottom of the board (same side
 as the mx6 processor)
 

board/wandboard/spl.c

@@ -0,0 +1,317 @@
+/*
+ * Copyright (C) 2014 Wandboard
+ * Author: Tungyi Lin <tungyilin1127@gmail.com>
+ *         Richard Hu <hakahu@gmail.com>
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/imx-common/video.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_SPL_BUILD)
+#include <asm/arch/mx6-ddr.h>
+/*
+ * Driving strength:
+ *   0x30 == 40 Ohm
+ *   0x28 == 48 Ohm
+ */
+
+#define IMX6DQ_DRIVE_STRENGTH		0x30
+#define IMX6SDL_DRIVE_STRENGTH		0x28
+
+/* configure MX6Q/DUAL mmdc DDR io registers */
+static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = {
+	.dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdclk_1 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_cas = IMX6DQ_DRIVE_STRENGTH,
+	.dram_ras = IMX6DQ_DRIVE_STRENGTH,
+	.dram_reset = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdcke0 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdcke1 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdba2 = 0x00000000,
+	.dram_sdodt0 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdodt1 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs0 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs1 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs2 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs3 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs4 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs5 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs6 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_sdqs7 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm0 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm1 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm2 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm3 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm4 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm5 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm6 = IMX6DQ_DRIVE_STRENGTH,
+	.dram_dqm7 = IMX6DQ_DRIVE_STRENGTH,
+};
+
+/* configure MX6Q/DUAL mmdc GRP io registers */
+static struct mx6dq_iomux_grp_regs mx6dq_grp_ioregs = {
+	.grp_ddr_type = 0x000c0000,
+	.grp_ddrmode_ctl = 0x00020000,
+	.grp_ddrpke = 0x00000000,
+	.grp_addds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_ctlds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_ddrmode = 0x00020000,
+	.grp_b0ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b1ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b2ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b3ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b4ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b5ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b6ds = IMX6DQ_DRIVE_STRENGTH,
+	.grp_b7ds = IMX6DQ_DRIVE_STRENGTH,
+};
+
+/* configure MX6SOLO/DUALLITE mmdc DDR io registers */
+struct mx6sdl_iomux_ddr_regs mx6sdl_ddr_ioregs = {
+	.dram_sdclk_0 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdclk_1 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_cas = IMX6SDL_DRIVE_STRENGTH,
+	.dram_ras = IMX6SDL_DRIVE_STRENGTH,
+	.dram_reset = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdcke0 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdcke1 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdba2 = 0x00000000,
+	.dram_sdodt0 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdodt1 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs0 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs1 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs2 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs3 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs4 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs5 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs6 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_sdqs7 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm0 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm1 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm2 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm3 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm4 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm5 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm6 = IMX6SDL_DRIVE_STRENGTH,
+	.dram_dqm7 = IMX6SDL_DRIVE_STRENGTH,
+};
+
+/* configure MX6SOLO/DUALLITE mmdc GRP io registers */
+struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
+	.grp_ddr_type = 0x000c0000,
+	.grp_ddrmode_ctl = 0x00020000,
+	.grp_ddrpke = 0x00000000,
+	.grp_addds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_ctlds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_ddrmode = 0x00020000,
+	.grp_b0ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b1ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b2ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b3ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b4ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b5ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b6ds = IMX6SDL_DRIVE_STRENGTH,
+	.grp_b7ds = IMX6SDL_DRIVE_STRENGTH,
+};
+
+/* H5T04G63AFR-PB */
+static struct mx6_ddr3_cfg h5t04g63afr = {
+	.mem_speed = 1600,
+	.density = 4,
+	.width = 16,
+	.banks = 8,
+	.rowaddr = 15,
+	.coladdr = 10,
+	.pagesz = 2,
+	.trcd = 1375,
+	.trcmin = 4875,
+	.trasmin = 3500,
+};
+
+/* H5TQ2G63DFR-H9 */
+static struct mx6_ddr3_cfg h5tq2g63dfr = {
+	.mem_speed = 1333,
+	.density = 2,
+	.width = 16,
+	.banks = 8,
+	.rowaddr = 14,
+	.coladdr = 10,
+	.pagesz = 2,
+	.trcd = 1350,
+	.trcmin = 4950,
+	.trasmin = 3600,
+};
+
+static struct mx6_mmdc_calibration mx6q_2g_mmdc_calib = {
+	.p0_mpwldectrl0 = 0x001f001f,
+	.p0_mpwldectrl1 = 0x001f001f,
+	.p1_mpwldectrl0 = 0x001f001f,
+	.p1_mpwldectrl1 = 0x001f001f,
+	.p0_mpdgctrl0 = 0x4301030d,
+	.p0_mpdgctrl1 = 0x03020277,
+	.p1_mpdgctrl0 = 0x4300030a,
+	.p1_mpdgctrl1 = 0x02780248,
+	.p0_mprddlctl = 0x4536393b,
+	.p1_mprddlctl = 0x36353441,
+	.p0_mpwrdlctl = 0x41414743,
+	.p1_mpwrdlctl = 0x462f453f,
+};
+
+/* DDR 64bit 2GB */
+static struct mx6_ddr_sysinfo mem_q = {
+	.dsize		= 2,
+	.cs1_mirror	= 0,
+	/* config for full 4GB range so that get_mem_size() works */
+	.cs_density	= 32,
+	.ncs		= 1,
+	.bi_on		= 1,
+	.rtt_nom	= 1,
+	.rtt_wr		= 0,
+	.ralat		= 5,
+	.walat		= 0,
+	.mif3_mode	= 3,
+	.rst_to_cke	= 0x23,
+	.sde_to_rst	= 0x10,
+};
+
+static struct mx6_mmdc_calibration mx6dl_1g_mmdc_calib = {
+	.p0_mpwldectrl0 = 0x001f001f,
+	.p0_mpwldectrl1 = 0x001f001f,
+	.p1_mpwldectrl0 = 0x001f001f,
+	.p1_mpwldectrl1 = 0x001f001f,
+	.p0_mpdgctrl0 = 0x420e020e,
+	.p0_mpdgctrl1 = 0x02000200,
+	.p1_mpdgctrl0 = 0x42020202,
+	.p1_mpdgctrl1 = 0x01720172,
+	.p0_mprddlctl = 0x494c4f4c,
+	.p1_mprddlctl = 0x4a4c4c49,
+	.p0_mpwrdlctl = 0x3f3f3133,
+	.p1_mpwrdlctl = 0x39373f2e,
+};
+
+static struct mx6_mmdc_calibration mx6s_512m_mmdc_calib = {
+	.p0_mpwldectrl0 = 0x0040003c,
+	.p0_mpwldectrl1 = 0x0032003e,
+	.p0_mpdgctrl0 = 0x42350231,
+	.p0_mpdgctrl1 = 0x021a0218,
+	.p0_mprddlctl = 0x4b4b4e49,
+	.p0_mpwrdlctl = 0x3f3f3035,
+};
+
+/* DDR 64bit 1GB */
+static struct mx6_ddr_sysinfo mem_dl = {
+	.dsize		= 2,
+	.cs1_mirror	= 0,
+	/* config for full 4GB range so that get_mem_size() works */
+	.cs_density	= 32,
+	.ncs		= 1,
+	.bi_on		= 1,
+	.rtt_nom	= 1,
+	.rtt_wr		= 0,
+	.ralat		= 5,
+	.walat		= 0,
+	.mif3_mode	= 3,
+	.rst_to_cke	= 0x23,
+	.sde_to_rst	= 0x10,
+};
+
+/* DDR 32bit 512MB */
+static struct mx6_ddr_sysinfo mem_s = {
+	.dsize		= 1,
+	.cs1_mirror	= 0,
+	/* config for full 4GB range so that get_mem_size() works */
+	.cs_density	= 32,
+	.ncs		= 1,
+	.bi_on		= 1,
+	.rtt_nom	= 1,
+	.rtt_wr		= 0,
+	.ralat		= 5,
+	.walat		= 0,
+	.mif3_mode	= 3,
+	.rst_to_cke	= 0x23,
+	.sde_to_rst	= 0x10,
+};
+
+static void ccgr_init(void)
+{
+	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+	writel(0x00C03F3F, &ccm->CCGR0);
+	writel(0x0030FC03, &ccm->CCGR1);
+	writel(0x0FFFC000, &ccm->CCGR2);
+	writel(0x3FF00000, &ccm->CCGR3);
+	writel(0x00FFF300, &ccm->CCGR4);
+	writel(0x0F0000C3, &ccm->CCGR5);
+	writel(0x000003FF, &ccm->CCGR6);
+}
+
+static void gpr_init(void)
+{
+	struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
+
+	/* enable AXI cache for VDOA/VPU/IPU */
+	writel(0xF00000CF, &iomux->gpr[4]);
+	/* set IPU AXI-id0 Qos=0xf(bypass) AXI-id1 Qos=0x7 */
+	writel(0x007F007F, &iomux->gpr[6]);
+	writel(0x007F007F, &iomux->gpr[7]);
+}
+
+static void spl_dram_init(void)
+{
+	if (is_cpu_type(MXC_CPU_MX6SOLO)) {
+		mx6sdl_dram_iocfg(32, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
+		mx6_dram_cfg(&mem_s, &mx6s_512m_mmdc_calib, &h5tq2g63dfr);
+	} else if (is_cpu_type(MXC_CPU_MX6DL)) {
+		mx6sdl_dram_iocfg(64, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
+		mx6_dram_cfg(&mem_dl, &mx6dl_1g_mmdc_calib, &h5tq2g63dfr);
+	} else if (is_cpu_type(MXC_CPU_MX6Q)) {
+		mx6dq_dram_iocfg(64, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
+		mx6_dram_cfg(&mem_q, &mx6q_2g_mmdc_calib, &h5t04g63afr);
+	}
+
+	udelay(100);
+}
+
+void board_init_f(ulong dummy)
+{
+	ccgr_init();
+
+	/* setup AIPS and disable watchdog */
+	arch_cpu_init();
+
+	gpr_init();
+
+	/* iomux */
+	board_early_init_f();
+
+	/* setup GP timer */
+	timer_init();
+
+	/* UART clocks enabled and gd valid - init serial console */
+	preloader_console_init();
+
+	/* DDR initialization */
+	spl_dram_init();
+
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	/* load/boot image from boot device */
+	board_init_r(NULL, 0);
+}
+#endif

board/wandboard/wandboard.c

@@ -53,66 +53,66 @@ DECLARE_GLOBAL_DATA_PTR;
 
 int dram_init(void)
 {
-	gd->ram_size = (phys_size_t)CONFIG_DDR_MB * 1024 * 1024;
+	gd->ram_size = imx_ddr_size();
 
 	return 0;
 }
 
 static iomux_v3_cfg_t const uart1_pads[] = {
-	MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
-	MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
+	IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
 };
 
 static iomux_v3_cfg_t const usdhc1_pads[] = {
-	MX6_PAD_SD1_CLK__SD1_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD1_CMD__SD1_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD1_DAT0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD1_DAT1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD1_DAT2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD1_DAT3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	IOMUX_PADS(PAD_SD1_CLK__SD1_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD1_CMD__SD1_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD1_DAT0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD1_DAT1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD1_DAT2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD1_DAT3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	/* Carrier MicroSD Card Detect */
-	MX6_PAD_GPIO_2__GPIO1_IO02      | MUX_PAD_CTRL(NO_PAD_CTRL),
+	IOMUX_PADS(PAD_GPIO_2__GPIO1_IO02  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };
 
 static iomux_v3_cfg_t const usdhc3_pads[] = {
-	MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
-	MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	IOMUX_PADS(PAD_SD3_CLK__SD3_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_CMD__SD3_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
+	IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 	/* SOM MicroSD Card Detect */
-	MX6_PAD_EIM_DA9__GPIO3_IO09     | MUX_PAD_CTRL(NO_PAD_CTRL),
+	IOMUX_PADS(PAD_EIM_DA9__GPIO3_IO09  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };
 
 static iomux_v3_cfg_t const enet_pads[] = {
-	MX6_PAD_ENET_MDIO__ENET_MDIO		| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET_MDC__ENET_MDC		| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TXC__RGMII_TXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TD0__RGMII_TD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TD1__RGMII_TD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TD2__RGMII_TD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TD3__RGMII_TD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RXC__RGMII_RXC	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RD0__RGMII_RD0	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RD1__RGMII_RD1	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RD2__RGMII_RD2	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RD3__RGMII_RD3	| MUX_PAD_CTRL(ENET_PAD_CTRL),
-	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL	| MUX_PAD_CTRL(ENET_PAD_CTRL),
+	IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_ENET_MDC__ENET_MDC    | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
+	IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 	/* AR8031 PHY Reset */
-	MX6_PAD_EIM_D29__GPIO3_IO29		| MUX_PAD_CTRL(NO_PAD_CTRL),
+	IOMUX_PADS(PAD_EIM_D29__GPIO3_IO29    | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };
 
 static void setup_iomux_uart(void)
 {
-	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+	SETUP_IOMUX_PADS(uart1_pads);
 }
 
 static void setup_iomux_enet(void)
 {
-	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
+	SETUP_IOMUX_PADS(enet_pads);
 
 	/* Reset AR8031 PHY */
 	gpio_direction_output(ETH_PHY_RESET, 0);
@@ -156,15 +156,13 @@ int board_mmc_init(bd_t *bis)
 	for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 		switch (index) {
 		case 0:
-			imx_iomux_v3_setup_multiple_pads(
-				usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
+			SETUP_IOMUX_PADS(usdhc3_pads);
 			usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 			usdhc_cfg[0].max_bus_width = 4;
 			gpio_direction_input(USDHC3_CD_GPIO);
 			break;
 		case 1:
-			imx_iomux_v3_setup_multiple_pads(
-				usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+			SETUP_IOMUX_PADS(usdhc1_pads);
 			usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 			usdhc_cfg[1].max_bus_width = 4;
 			gpio_direction_input(USDHC1_CD_GPIO);
@@ -218,54 +216,66 @@ int board_phy_config(struct phy_device *phydev)
 }
 
 #if defined(CONFIG_VIDEO_IPUV3)
-struct i2c_pads_info i2c2_pad_info = {
+struct i2c_pads_info mx6q_i2c2_pad_info = {
 	.scl = {
-		.i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL
+		.i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL
 			| MUX_PAD_CTRL(I2C_PAD_CTRL),
-		.gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12
+		.gpio_mode = MX6Q_PAD_KEY_COL3__GPIO4_IO12
 			| MUX_PAD_CTRL(I2C_PAD_CTRL),
 		.gp = IMX_GPIO_NR(4, 12)
 	},
 	.sda = {
-		.i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA
+		.i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA
 			| MUX_PAD_CTRL(I2C_PAD_CTRL),
-		.gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13
+		.gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO4_IO13
+			| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(4, 13)
+	}
+};
+
+struct i2c_pads_info mx6dl_i2c2_pad_info = {
+	.scl = {
+		.i2c_mode = MX6DL_PAD_KEY_COL3__I2C2_SCL
+			| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6DL_PAD_KEY_COL3__GPIO4_IO12
+			| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gp = IMX_GPIO_NR(4, 12)
+	},
+	.sda = {
+		.i2c_mode = MX6DL_PAD_KEY_ROW3__I2C2_SDA
+			| MUX_PAD_CTRL(I2C_PAD_CTRL),
+		.gpio_mode = MX6DL_PAD_KEY_ROW3__GPIO4_IO13
 			| MUX_PAD_CTRL(I2C_PAD_CTRL),
 		.gp = IMX_GPIO_NR(4, 13)
 	}
 };
 
 static iomux_v3_cfg_t const fwadapt_7wvga_pads[] = {
-	MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
-	MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02, /* HSync */
-	MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03, /* VSync */
-	MX6_PAD_DI0_PIN4__IPU1_DI0_PIN04
-		| MUX_PAD_CTRL(PAD_CTL_DSE_120ohm), /* Contrast */
-	MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15, /* DISP0_DRDY */
-
-	MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
-	MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
-	MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
-	MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
-	MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
-	MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
-	MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
-	MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
-	MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
-	MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
-	MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
-	MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
-	MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
-	MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
-	MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
-	MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
-	MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
-	MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
-
-	MX6_PAD_SD4_DAT2__GPIO2_IO10
-		| MUX_PAD_CTRL(NO_PAD_CTRL), /* DISP0_BKLEN */
-	MX6_PAD_SD4_DAT3__GPIO2_IO11
-		| MUX_PAD_CTRL(NO_PAD_CTRL), /* DISP0_VDDEN */
+	IOMUX_PADS(PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK),
+	IOMUX_PADS(PAD_DI0_PIN2__IPU1_DI0_PIN02), /* HSync */
+	IOMUX_PADS(PAD_DI0_PIN3__IPU1_DI0_PIN03), /* VSync */
+	IOMUX_PADS(PAD_DI0_PIN4__IPU1_DI0_PIN04	| MUX_PAD_CTRL(PAD_CTL_DSE_120ohm)), /* Contrast */
+	IOMUX_PADS(PAD_DI0_PIN15__IPU1_DI0_PIN15), /* DISP0_DRDY */
+	IOMUX_PADS(PAD_DISP0_DAT0__IPU1_DISP0_DATA00),
+	IOMUX_PADS(PAD_DISP0_DAT1__IPU1_DISP0_DATA01),
+	IOMUX_PADS(PAD_DISP0_DAT2__IPU1_DISP0_DATA02),
+	IOMUX_PADS(PAD_DISP0_DAT3__IPU1_DISP0_DATA03),
+	IOMUX_PADS(PAD_DISP0_DAT4__IPU1_DISP0_DATA04),
+	IOMUX_PADS(PAD_DISP0_DAT5__IPU1_DISP0_DATA05),
+	IOMUX_PADS(PAD_DISP0_DAT6__IPU1_DISP0_DATA06),
+	IOMUX_PADS(PAD_DISP0_DAT7__IPU1_DISP0_DATA07),
+	IOMUX_PADS(PAD_DISP0_DAT8__IPU1_DISP0_DATA08),
+	IOMUX_PADS(PAD_DISP0_DAT9__IPU1_DISP0_DATA09),
+	IOMUX_PADS(PAD_DISP0_DAT10__IPU1_DISP0_DATA10),
+	IOMUX_PADS(PAD_DISP0_DAT11__IPU1_DISP0_DATA11),
+	IOMUX_PADS(PAD_DISP0_DAT12__IPU1_DISP0_DATA12),
+	IOMUX_PADS(PAD_DISP0_DAT13__IPU1_DISP0_DATA13),
+	IOMUX_PADS(PAD_DISP0_DAT14__IPU1_DISP0_DATA14),
+	IOMUX_PADS(PAD_DISP0_DAT15__IPU1_DISP0_DATA15),
+	IOMUX_PADS(PAD_DISP0_DAT16__IPU1_DISP0_DATA16),
+	IOMUX_PADS(PAD_DISP0_DAT17__IPU1_DISP0_DATA17),
+	IOMUX_PADS(PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_BKLEN */
+	IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_VDDEN */
 };
 
 static void do_enable_hdmi(struct display_info_t const *dev)
@@ -281,9 +291,7 @@ static int detect_i2c(struct display_info_t const *dev)
 
 static void enable_fwadapt_7wvga(struct display_info_t const *dev)
 {
-	imx_iomux_v3_setup_multiple_pads(
-		fwadapt_7wvga_pads,
-		ARRAY_SIZE(fwadapt_7wvga_pads));
+	SETUP_IOMUX_PADS(fwadapt_7wvga_pads);
 
 	gpio_direction_output(IMX_GPIO_NR(2, 10), 1);
 	gpio_direction_output(IMX_GPIO_NR(2, 11), 1);
@@ -346,7 +354,7 @@ static void setup_display(void)
 	writel(reg, &mxc_ccm->chsccdr);
 
 	/* Disable LCD backlight */
-	imx_iomux_v3_setup_pad(MX6_PAD_DI0_PIN4__GPIO4_IO20);
+	SETUP_IOMUX_PAD(PAD_DI0_PIN4__GPIO4_IO20);
 	gpio_direction_input(IMX_GPIO_NR(4, 20));
 }
 #endif /* CONFIG_VIDEO_IPUV3 */
@@ -391,6 +399,12 @@ int board_late_init(void)
 	add_board_boot_modes(board_boot_modes);
 #endif
 
+#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+	if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D))
+		setenv("board_rev", "MX6Q");
+	else
+		setenv("board_rev", "MX6DL");
+#endif
 	return 0;
 }
 
@@ -399,7 +413,11 @@ int board_init(void)
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 
-	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c2_pad_info);
+	setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c2_pad_info);
+	if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D))
+		setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6q_i2c2_pad_info);
+	else
+		setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c2_pad_info);
 
 	return 0;
 }

configs/wandboard_defconfig

@@ -0,0 +1,6 @@
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6QDL"
+CONFIG_ARM=y
+CONFIG_TARGET_WANDBOARD=y
+CONFIG_DM=y
+CONFIG_DM_THERMAL=y

configs/wandboard_dl_defconfig

@@ -1,3 +0,0 @@
-CONFIG_ARM=y
-CONFIG_TARGET_WANDBOARD=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6dl.cfg,MX6DL,DDR_MB=1024"

configs/wandboard_quad_defconfig

@@ -1,3 +0,0 @@
-CONFIG_ARM=y
-CONFIG_TARGET_WANDBOARD=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6q2g.cfg,MX6Q,DDR_MB=2048"

configs/wandboard_solo_defconfig

@@ -1,3 +0,0 @@
-CONFIG_ARM=y
-CONFIG_TARGET_WANDBOARD=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6s.cfg,MX6S,DDR_MB=512"

include/configs/wandboard.h

@@ -14,6 +14,10 @@
 #include <asm/imx-common/gpio.h>
 #include <linux/sizes.h>
 
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_MMC_SUPPORT
+#include "imx6_spl.h"
+
 #define CONFIG_MX6
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
@@ -125,20 +129,15 @@
 #define CONFIG_MXC_OCOTP
 #endif
 
-#if defined(CONFIG_MX6DL) || defined(CONFIG_MX6S)
-#define CONFIG_DEFAULT_FDT_FILE		"imx6dl-wandboard.dtb"
-#elif defined(CONFIG_MX6Q)
-#define CONFIG_DEFAULT_FDT_FILE		"imx6q-wandboard.dtb"
-#endif
-
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"console=ttymxc0\0" \
 	"splashpos=m,m\0" \
+	"fdtfile=undefined\0" \
 	"fdt_high=0xffffffff\0" \
 	"initrd_high=0xffffffff\0" \
-	"fdt_file=" CONFIG_DEFAULT_FDT_FILE "\0" \
 	"fdt_addr=0x18000000\0" \
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
@@ -192,7 +191,7 @@
 	"bootscript=echo Running bootscript from mmc ...; " \
 		"source\0" \
 	"loadimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${image}\0" \
-	"loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \
+	"loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdtfile}\0" \
 	"mmcboot=echo Booting from mmc ...; " \
 		"run mmcargs; " \
 		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
@@ -220,7 +219,7 @@
 		"fi; " \
 		"${get_cmd} ${image}; " \
 		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
-			"if ${get_cmd} ${fdt_addr} ${fdt_file}; then " \
+			"if ${get_cmd} ${fdt_addr} ${fdtfile}; then " \
 				"bootz ${loadaddr} - ${fdt_addr}; " \
 			"else " \
 				"if test ${boot_fdt} = try; then " \
@@ -231,9 +230,17 @@
 			"fi; " \
 		"else " \
 			"bootz; " \
-		"fi;\0"
+		"fi;\0" \
+	"findfdt="\
+		"if test $board_rev = MX6Q ; then " \
+			"setenv fdtfile imx6q-wandboard.dtb; fi; " \
+		"if test $board_rev = MX6DL ; then " \
+			"setenv fdtfile imx6dl-wandboard.dtb; fi; " \
+		"if test $fdtfile = undefined; then " \
+			"echo WARNING: Could not determine dtb to use; fi; \0" \
 
 #define CONFIG_BOOTCOMMAND \
+	   "run findfdt; " \
 	   "mmc dev ${mmcdev}; if mmc rescan; then " \
 		   "if run loadbootscript; then " \
 			   "run bootscript; " \