openwrt/package/boot/uboot-mxs/patches/001-add-i2se-duckbill.patch

From 83ee930c18b068c9a16b66c01aaa5d6e06570152 Mon Sep 17 00:00:00 2001
From: Michael Heimpold <mhei@heimpold.de>
Date: Sun, 19 Apr 2020 02:46:46 +0200
Subject: [PATCH] arm: mxs: add support for I2SE's Duckbill boards

The Duckbill devices are small, pen-drive sized boards based on
NXP's i.MX28 SoC. While the initial variants (Duckbill series) were
equipped with a micro SD card slot only, the latest generation
(Duckbill 2 series) have an additional internal eMMC onboard.

Both device generations consist of four "family members":

- Duckbill/Duckbill 2: generic board, intended to be used as
  baseboard for custom designs and/or as development board

- Duckbill EnOcean/Duckbill 2 EnOcean: come with an EnOcean
  daugther board equipped with the popular TCM310 module

- Duckbill 485/Duckbill 2 485: as the name implies, these
  devices are intended to be used as Ethernet - RS485 converters

- Duckbill SPI/Duckbill 2 SPI: not sold separately, but used
  in I2SE's development kits for Green PHY HomePlug Powerline
  communication

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 arch/arm/mach-imx/mxs/Kconfig   |   5 +
 board/i2se/duckbill/Kconfig     |  15 +++
 board/i2se/duckbill/MAINTAINERS |   6 +
 board/i2se/duckbill/Makefile    |  10 ++
 board/i2se/duckbill/duckbill.c  | 189 ++++++++++++++++++++++++++++++++
 board/i2se/duckbill/iomux.c     | 157 ++++++++++++++++++++++++++
 configs/duckbill_defconfig      |  43 ++++++++
 include/configs/duckbill.h      | 172 +++++++++++++++++++++++++++++
 8 files changed, 597 insertions(+)
 create mode 100644 board/i2se/duckbill/Kconfig
 create mode 100644 board/i2se/duckbill/MAINTAINERS
 create mode 100644 board/i2se/duckbill/Makefile
 create mode 100644 board/i2se/duckbill/duckbill.c
 create mode 100644 board/i2se/duckbill/iomux.c
 create mode 100644 configs/duckbill_defconfig
 create mode 100644 include/configs/duckbill.h

diff --git a/arch/arm/mach-imx/mxs/Kconfig b/arch/arm/mach-imx/mxs/Kconfig
index b90d7b6e41..e7d8bc6792 100644
--- a/arch/arm/mach-imx/mxs/Kconfig
+++ b/arch/arm/mach-imx/mxs/Kconfig
@@ -50,6 +50,10 @@ config TARGET_APX4DEVKIT
 config TARGET_BG0900
 	bool "Support bg0900"
 
+config TARGET_DUCKBILL
+	bool "Support duckbill"
+	select BOARD_EARLY_INIT_F
+
 config TARGET_MX28EVK
 	bool "Support mx28evk"
 	select BOARD_EARLY_INIT_F
@@ -70,6 +74,7 @@ config SYS_SOC
 
 source "board/bluegiga/apx4devkit/Kconfig"
 source "board/freescale/mx28evk/Kconfig"
+source "board/i2se/duckbill/Kconfig"
 source "board/liebherr/xea/Kconfig"
 source "board/ppcag/bg0900/Kconfig"
 source "board/schulercontrol/sc_sps_1/Kconfig"
diff --git a/board/i2se/duckbill/Kconfig b/board/i2se/duckbill/Kconfig
new file mode 100644
index 0000000000..98c1e4689f
--- /dev/null
+++ b/board/i2se/duckbill/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_DUCKBILL
+
+config SYS_BOARD
+	default "duckbill"
+
+config SYS_VENDOR
+	default "i2se"
+
+config SYS_SOC
+	default "mxs"
+
+config SYS_CONFIG_NAME
+	default "duckbill"
+
+endif
diff --git a/board/i2se/duckbill/MAINTAINERS b/board/i2se/duckbill/MAINTAINERS
new file mode 100644
index 0000000000..5496baa330
--- /dev/null
+++ b/board/i2se/duckbill/MAINTAINERS
@@ -0,0 +1,6 @@
+I2SE DUCKBILL BOARD
+M:	Michael Heimpold <mhei@heimpold.de>
+S:	Maintained
+F:	board/i2se/duckbill/
+F:	include/configs/duckbill.h
+F:	configs/duckbill_defconfig
diff --git a/board/i2se/duckbill/Makefile b/board/i2se/duckbill/Makefile
new file mode 100644
index 0000000000..11bac98e4c
--- /dev/null
+++ b/board/i2se/duckbill/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2014-2020
+# Michael Heimpold, mhei@heimpold.de.
+
+ifndef	CONFIG_SPL_BUILD
+obj-y	:= duckbill.o
+else
+obj-y	:= iomux.o
+endif
diff --git a/board/i2se/duckbill/duckbill.c b/board/i2se/duckbill/duckbill.c
new file mode 100644
index 0000000000..93defc6c28
--- /dev/null
+++ b/board/i2se/duckbill/duckbill.c
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * I2SE Duckbill board
+ *
+ * Copyright (C) 2014-2020 Michael Heimpold <mhei@heimpold.de>
+ */
+
+#include <common.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-mx28.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/setup.h>
+#include <fdt_support.h>
+#include <linux/mii.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <errno.h>
+#include <fuse.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static u32 system_rev;
+static u32 serialno;
+
+/*
+ * Functions
+ */
+int board_early_init_f(void)
+{
+	/* IO0 clock at 480MHz */
+	mxs_set_ioclk(MXC_IOCLK0, 480000);
+	/* IO1 clock at 480MHz */
+	mxs_set_ioclk(MXC_IOCLK1, 480000);
+
+	/* SSP0 clock at 96MHz */
+	mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	return mxs_dram_init();
+}
+
+int board_init(void)
+{
+	/* Adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_MMC
+int board_mmc_init(bd_t *bis)
+{
+	return mxsmmc_initialize(bis, 0, NULL, NULL);
+}
+#endif
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	unsigned int reset_gpio;
+	int ret;
+
+	ret = cpu_eth_init(bis);
+
+	if (system_rev == 1)
+		reset_gpio = MX28_PAD_SSP0_DATA7__GPIO_2_7;
+	else
+		reset_gpio = MX28_PAD_GPMI_ALE__GPIO_0_26;
+
+	/* Reset PHY */
+	gpio_request(reset_gpio, "enet0_phy_rst");
+	gpio_direction_output(reset_gpio, 0);
+	udelay(200);
+	gpio_set_value(reset_gpio, 1);
+
+	/* give PHY some time to get out of the reset */
+	udelay(10000);
+
+	ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
+	if (ret) {
+		puts("FEC MXS: Unable to init FEC\n");
+		return ret;
+	}
+
+	return ret;
+}
+
+void mx28_adjust_mac(int dev_id, unsigned char *mac)
+{
+	mac[0] = 0x00;
+	mac[1] = 0x01;
+	mac[2] = 0x87;
+}
+#endif
+
+#ifdef CONFIG_OF_BOARD_SETUP
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	uint8_t enetaddr[6];
+	u32 mac = 0;
+
+#ifdef CONFIG_MXS_OCOTP
+	/* only Duckbill SPI has a MAC for the QCA7k */
+	fuse_read(0, 1, &mac);
+#endif
+
+	if (mac != 0) {
+		enetaddr[0] = 0x00;
+		enetaddr[1] = 0x01;
+		enetaddr[2] = 0x87;
+		enetaddr[3] = (mac >> 16) & 0xff;
+		enetaddr[4] = (mac >>  8) & 0xff;
+		enetaddr[5] =  mac        & 0xff;
+
+		fdt_find_and_setprop(blob, "spi1/ethernet@0",
+		                     "local-mac-address", enetaddr, 6, 1);
+	}
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_REVISION_TAG
+u32 get_board_rev(void)
+{
+	return system_rev;
+}
+#endif
+
+#ifdef CONFIG_SERIAL_TAG
+void get_board_serial(struct tag_serialnr *serialnr)
+{
+	serialnr->low = serialno;
+	serialnr->high = 0;
+}
+#endif
+
+int misc_init_r(void)
+{
+	unsigned int led_red_gpio;
+	char *s;
+
+	/* Board revision detection */
+	gpio_request(MX28_PAD_LCD_D17__GPIO_1_17, "board_revision");
+	gpio_direction_input(MX28_PAD_LCD_D17__GPIO_1_17);
+
+	/* MX28_PAD_LCD_D17__GPIO_1_17: v1 = pull-down, v2 = pull-up */
+	system_rev =
+		gpio_get_value(MX28_PAD_LCD_D17__GPIO_1_17);
+	system_rev += 1;
+
+	/* guess DT blob if not set in environment */
+	if (!env_get("fdt_file")) {
+		if (system_rev == 1)
+			env_set("fdt_file", "imx28-duckbill.dtb");
+		else
+			env_set("fdt_file", "imx28-duckbill-2.dtb");
+	}
+
+	/* enable red LED to indicate a running bootloader */
+	if (system_rev == 1)
+		led_red_gpio = MX28_PAD_AUART1_RX__GPIO_3_4;
+	else
+		led_red_gpio = MX28_PAD_SAIF0_LRCLK__GPIO_3_21;
+	gpio_request(led_red_gpio, "led_red");
+	gpio_direction_output(led_red_gpio, 1);
+
+	if (system_rev == 1)
+		puts("Board: I2SE Duckbill\n");
+	else
+		puts("Board: I2SE Duckbill 2\n");
+
+	serialno = env_get_ulong("serial#", 10, 0);
+	s = env_get("serial#");
+	if (s && s[0]) {
+		puts("Serial: ");
+		puts(s);
+		putc('\n');
+	}
+
+	return 0;
+}
diff --git a/board/i2se/duckbill/iomux.c b/board/i2se/duckbill/iomux.c
new file mode 100644
index 0000000000..c6cc211181
--- /dev/null
+++ b/board/i2se/duckbill/iomux.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * I2SE Duckbill IOMUX setup
+ *
+ * Copyright (C) 2013-2020 Michael Heimpold <mhei@heimpold.de>
+ */
+
+#include <common.h>
+#include <config.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/iomux-mx28.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/sys_proto.h>
+
+#define	MUX_CONFIG_SSP0	(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
+#define	MUX_CONFIG_ENET	(MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
+#define	MUX_CONFIG_EMI	(MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
+
+/* For all revisions */
+const iomux_cfg_t iomux_setup[] = {
+	/* DUART */
+	MX28_PAD_PWM0__DUART_RX,
+	MX28_PAD_PWM1__DUART_TX,
+
+	/* eMMC (v2) or SD card (v1) */
+	MX28_PAD_SSP0_DATA0__SSP0_D0 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA1__SSP0_D1 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA2__SSP0_D2 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA3__SSP0_D3 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_CMD__SSP0_CMD | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
+		(MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
+	MX28_PAD_SSP0_SCK__SSP0_SCK |
+		(MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
+
+	/* Ethernet */
+	MX28_PAD_ENET0_MDC__ENET0_MDC | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_MDIO__ENET0_MDIO | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MUX_CONFIG_ENET,
+	MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MUX_CONFIG_ENET,
+	MX28_PAD_ENET_CLK__CLKCTRL_ENET | MUX_CONFIG_ENET,
+
+	/* EMI */
+	MX28_PAD_EMI_D00__EMI_DATA0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D01__EMI_DATA1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D02__EMI_DATA2 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D03__EMI_DATA3 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D04__EMI_DATA4 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D05__EMI_DATA5 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D06__EMI_DATA6 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D07__EMI_DATA7 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D08__EMI_DATA8 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D09__EMI_DATA9 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D10__EMI_DATA10 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D11__EMI_DATA11 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D12__EMI_DATA12 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D13__EMI_DATA13 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D14__EMI_DATA14 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_D15__EMI_DATA15 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_ODT0__EMI_ODT0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DQM0__EMI_DQM0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_ODT1__EMI_ODT1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DQM1__EMI_DQM1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DDR_OPEN_FB__EMI_DDR_OPEN_FEEDBACK | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_CLK__EMI_CLK | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DQS0__EMI_DQS0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DQS1__EMI_DQS1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_DDR_OPEN__EMI_DDR_OPEN | MUX_CONFIG_EMI,
+
+	MX28_PAD_EMI_A00__EMI_ADDR0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A01__EMI_ADDR1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A02__EMI_ADDR2 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A03__EMI_ADDR3 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A04__EMI_ADDR4 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A05__EMI_ADDR5 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A06__EMI_ADDR6 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A07__EMI_ADDR7 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A08__EMI_ADDR8 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A09__EMI_ADDR9 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A10__EMI_ADDR10 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A11__EMI_ADDR11 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A12__EMI_ADDR12 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A13__EMI_ADDR13 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_A14__EMI_ADDR14 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_BA0__EMI_BA0 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_BA1__EMI_BA1 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_BA2__EMI_BA2 | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_CASN__EMI_CASN | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_RASN__EMI_RASN | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_WEN__EMI_WEN | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
+	MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
+
+	/* Revision pin(s) */
+	MX28_PAD_LCD_D17__GPIO_1_17,
+};
+
+/* For revision 1 only */
+const iomux_cfg_t iomux_setup_v1[] = {
+	/* PHY reset */
+	MX28_PAD_SSP0_DATA7__GPIO_2_7 |
+		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
+
+	/* LEDs */
+	MX28_PAD_AUART1_RX__GPIO_3_4,
+	MX28_PAD_AUART1_TX__GPIO_3_5,
+};
+
+/* For revision 2 only */
+const iomux_cfg_t iomux_setup_v2[] = {
+	/* eMMC (v2) */
+	MX28_PAD_SSP0_DATA4__SSP0_D4 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA5__SSP0_D5 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA6__SSP0_D6 | MUX_CONFIG_SSP0,
+	MX28_PAD_SSP0_DATA7__SSP0_D7 | MUX_CONFIG_SSP0,
+
+	/* PHY reset */
+	MX28_PAD_GPMI_ALE__GPIO_0_26 |
+		(MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
+
+	/* LEDs */
+	MX28_PAD_SAIF0_LRCLK__GPIO_3_21,
+	MX28_PAD_SAIF0_MCLK__GPIO_3_20,
+};
+
+#define HW_DRAM_CTL29	(0x74 >> 2)
+#define CS_MAP		0xf
+#define COLUMN_SIZE	0x2
+#define ADDR_PINS	0x1
+#define APREBIT		0xa
+
+#define HW_DRAM_CTL29_CONFIG	(CS_MAP << 24 | COLUMN_SIZE << 16 | \
+					ADDR_PINS << 8 | APREBIT)
+
+void mxs_adjust_memory_params(uint32_t *dram_vals)
+{
+	dram_vals[HW_DRAM_CTL29] = HW_DRAM_CTL29_CONFIG;
+}
+
+void board_init_ll(const uint32_t arg, const uint32_t *resptr)
+{
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
+
+	gpio_request(MX28_PAD_LCD_D17__GPIO_1_17, "board_revision");
+	gpio_direction_input(MX28_PAD_LCD_D17__GPIO_1_17);
+
+	if (gpio_get_value(MX28_PAD_LCD_D17__GPIO_1_17))
+		mxs_iomux_setup_multiple_pads(iomux_setup_v2, ARRAY_SIZE(iomux_setup_v2));
+	else
+		mxs_iomux_setup_multiple_pads(iomux_setup_v1, ARRAY_SIZE(iomux_setup_v1));
+}
diff --git a/configs/duckbill_defconfig b/configs/duckbill_defconfig
new file mode 100644
index 0000000000..b2d7fbcf77
--- /dev/null
+++ b/configs/duckbill_defconfig
@@ -0,0 +1,43 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX28=y
+CONFIG_SYS_TEXT_BASE=0x40002000
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_TARGET_DUCKBILL=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_ENV_SIZE=0x20000
+CONFIG_ENV_OFFSET=0x20000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_SPL=y
+CONFIG_SPL_TEXT_BASE=0x00001000
+CONFIG_BOOTDELAY=1
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+CONFIG_VERSION_VARIABLE=y
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_ARCH_MISC_INIT=y
+# CONFIG_SPL_FRAMEWORK is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_BOOTZ=y
+# CONFIG_CMD_ELF is not set
+CONFIG_CMD_UNZIP=y
+CONFIG_CMD_FUSE=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_MMC_SWRITE=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_DOS_PARTITION=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
+CONFIG_ENV_OFFSET_REDUND=0x40000
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_MXS_GPIO=y
+CONFIG_MMC_MXS=y
+CONFIG_MII=y
+CONFIG_CONS_INDEX=0
+CONFIG_OF_LIBFDT=y
diff --git a/include/configs/duckbill.h b/include/configs/duckbill.h
new file mode 100644
index 0000000000..565d8c58b7
--- /dev/null
+++ b/include/configs/duckbill.h
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2014-2020 Michael Heimpold <mhei@heimpold.de>
+ *
+ */
+#ifndef __CONFIGS_DUCKBILL_H__
+#define __CONFIGS_DUCKBILL_H__
+
+/* System configurations */
+#define CONFIG_MACH_TYPE	MACH_TYPE_DUCKBILL
+
+#define CONFIG_MISC_INIT_R
+
+#define CONFIG_SYS_MXS_VDD5V_ONLY
+
+/* Memory configuration */
+#define PHYS_SDRAM_1			0x40000000	/* Base address */
+#define PHYS_SDRAM_1_SIZE		0x40000000	/* Max 1 GB RAM */
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+
+/* Environment is in MMC */
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_SYS_MMC_ENV_DEV		0
+
+/* FEC Ethernet on SoC */
+#ifdef CONFIG_CMD_NET
+#define CONFIG_FEC_MXC
+#define CONFIG_MX28_FEC_MAC_IN_OCOTP
+#define CONFIG_FEC_MXC_MDIO_BASE	MXS_ENET0_BASE
+#endif
+
+#define CONFIG_IPADDR		192.168.1.10
+#define CONFIG_SERVERIP		192.168.1.1
+#define CONFIG_NETMASK		255.255.255.0
+#define CONFIG_GATEWAYIP	192.168.1.254
+
+/* Boot Linux */
+#define CONFIG_BOOTDELAY	1
+#define CONFIG_BOOTFILE		"zImage"
+#define CONFIG_LOADADDR		0x42000000
+#define CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
+#define CONFIG_REVISION_TAG
+#define CONFIG_SERIAL_TAG
+#define CONFIG_OF_BOARD_SETUP
+#define CONFIG_BOOT_RETRY_TIME		120	/* retry autoboot after 120 seconds */
+#define CONFIG_AUTOBOOT_KEYED
+#define CONFIG_AUTOBOOT_PROMPT		"Autobooting in %d seconds, " \
+					"press <c> to stop\n"
+#define CONFIG_AUTOBOOT_DELAY_STR	"\x63"	/* allows retry after retry time */
+#define CONFIG_AUTOBOOT_STOP_STR	" "	/* stop autoboot with <Space> */
+#define CONFIG_RESET_TO_RETRY			/* reset board to retry booting */
+
+/* Extra Environment */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"mmc_part2_offset=1000\0" \
+	"mmc_part3_offset=19000\0" \
+	"update_openwrt_firmware_filename=openwrt-mxs-root.ext4\0" \
+	"update_openwrt_firmware=" \
+		"if mmc rescan; then " \
+			"if tftp ${update_openwrt_firmware_filename}; then " \
+				"setexpr fw_sz ${filesize} + 1ff; " \
+				"setexpr fw_sz ${fw_sz} / 200; " \
+				"mmc write ${loadaddr} ${mmc_part2_offset} ${fw_sz}; " \
+				"mmc write ${loadaddr} ${mmc_part3_offset} ${fw_sz}; " \
+			"fi; " \
+		"fi\0" \
+	"update_fw_filename_prefix=emmc.img.\0" \
+	"update_fw_filename_suffix=.gz\0" \
+	"update_fw_parts=0x6\0" \
+	"update_fw_fsize_uncompressed=4000000\0" \
+	"gzwrite_wbuf=100000\0" \
+	"update_emmc_firmware=" \
+		"setexpr i ${update_fw_parts}; setexpr error 0; " \
+		"while itest ${i} -gt 0; do " \
+			"echo Transfering firmware image part ${i} of ${update_fw_parts}; " \
+			"if itest ${i} -le f; then " \
+				"setenv j 0${i}; " \
+			"else " \
+				"setenv j ${i}; " \
+			"fi; " \
+			"if tftp ${loadaddr} ${update_fw_basedir}${update_fw_filename_prefix}${j}${update_fw_filename_suffix}; then " \
+				"setexpr k ${i} - 1; " \
+				"setexpr offset ${update_fw_fsize_uncompressed} * ${k}; " \
+				"if gzwrite mmc ${mmcdev} ${loadaddr} ${filesize} ${gzwrite_wbuf} ${offset}; then " \
+					"setexpr i ${i} - 1; " \
+				"else " \
+					"setexpr i 0; " \
+					"setexpr error 1; " \
+				"fi; " \
+			"else " \
+				"setexpr i 0; " \
+				"setexpr error 1; " \
+			"fi; " \
+		"done; setenv i; setenv j; setenv k; setenv fsize; setenv filesize; setenv offset; " \
+		"if test ${error} -eq 1; then " \
+			"echo Firmware Update FAILED; " \
+		"else " \
+			"echo Firmware Update OK; " \
+		"fi; setenv error\0" \
+	"image=zImage\0" \
+	"console=ttyAMA0\0" \
+	"fdt_addr=0x41000000\0" \
+	"boot_fdt=try\0" \
+	"ip_dyn=yes\0" \
+	"bootsys=1\0" \
+	"mmcdev=0\0" \
+	"mmcpart=2\0" \
+	"mmcroot=/dev/mmcblk0p2\0" \
+	"mmcargs=setenv bootargs console=${console},${baudrate} " \
+		"root=${mmcroot} " \
+		"rootwait bootsys=${bootsys} panic=1 ${extraargs}\0" \
+	"loadimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} /boot/${image}\0" \
+	"loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdt_addr} /boot/${fdt_file}\0" \
+	"mmcboot=echo Booting from mmc ...; " \
+		"setexpr mmcpart 1 + ${bootsys}; " \
+		"setenv mmcroot /dev/mmcblk0p${mmcpart}; " \
+		"run mmcargs; " \
+		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
+			"if run loadfdt; then " \
+				"bootz ${loadaddr} - ${fdt_addr}; " \
+			"else " \
+				"if test ${boot_fdt} = try; then " \
+					"bootz; " \
+				"else " \
+					"echo WARN: Cannot load the DT; " \
+				"fi; " \
+			"fi; " \
+		"else " \
+			"bootz; " \
+		"fi\0" \
+	"nfsroot=/\0" \
+	"netargs=setenv bootargs console=${console},${baudrate} " \
+		"root=/dev/nfs " \
+		"ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp ${extraargs}\0" \
+	"netboot=echo Booting from net ...; " \
+		"run netargs; "	\
+		"if test ${ip_dyn} = yes; then " \
+			"setenv get_cmd dhcp; " \
+		"else " \
+			"setenv get_cmd tftp; " \
+		"fi; " \
+		"${get_cmd} ${image}; " \
+		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
+			"if ${get_cmd} ${fdt_addr} ${fdt_file}; then " \
+				"bootz ${loadaddr} - ${fdt_addr}; " \
+			"else " \
+				"if test ${boot_fdt} = try; then " \
+					"bootz; " \
+				"else " \
+					"echo WARN: Cannot load the DT; " \
+				"fi;" \
+			"fi; " \
+		"else " \
+			"bootz; " \
+		"fi\0"
+
+#define CONFIG_BOOTCOMMAND \
+	"mmc dev ${mmcdev}; " \
+	"if mmc rescan; then " \
+		"if run loadimage; then " \
+			"run mmcboot; " \
+		"else " \
+			"run netboot; " \
+		"fi; " \
+	"else " \
+		"run netboot; " \
+	"fi"
+
+/* The rest of the configuration is shared */
+#include <configs/mxs.h>
+
+#endif /* __CONFIGS_DUCKBILL_H__ */
-- 
2.17.1