imx: Add SeeedStudio NPI-IMX6ULL Support

CPU:   Freescale i.MX6ULL rev1.1 792 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 49C
Reset cause: POR
Model: Seeed NPi iMX6ULL Dev Board with NAND
Board: Seeed NPi i.MX6ULL Dev Board
DRAM:  512 MiB
NAND:  512 MiB
MMC:   FSL_SDHC: 0
In:    serial@2020000
Out:   serial@2020000
Err:   serial@2020000
Net:   FEC0

Working:
- Eth0
- MMC/SD
- NAND
- UART 1
- USB host

Signed-off-by: Navin Sankar Velliangiri <navin@linumiz.com>

Note:

Changes in v2:

 * removed unnecessary space in imx6ull-seeed-npi-imx6ull-dev-board.dts file.
 * Used SZ_2M for CONFIG_SYS_MALLOC_LEN size allocation.

include/configs/npi_imx6ull.h

@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin@linumiz.com>
+ */
+
+#ifndef _NPI_IMX6ULL_H
+#define _NPI_IMX6ULL_H
+
+#include <linux/sizes.h>
+#include "mx6_common.h"
+
+/* SPL options */
+#include "imx6_spl.h"
+
+#define CONFIG_SYS_FSL_USDHC_NUM	1
+
+/* Size of malloc() poll */
+#define CONFIG_SYS_MALLOC_LEN		SZ_2M
+
+/* Console configs */
+#define CONFIG_MXC_UART_BASE		UART1_BASE
+
+/* MMC Configs */
+#define CONFIG_SYS_FSL_ESDHC_ADDR	USDHC2_BASE_ADDR
+
+#define CONFIG_NETMASK			255.255.255.0
+
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_LOADADDR
+#define CONFIG_SYS_HZ			1000
+
+/* Physical Memory Map */
+#define PHYS_SDRAM			MMDC0_ARB_BASE_ADDR
+
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM
+#define CONFIG_SYS_INIT_RAM_ADDR	IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_SIZE	IRAM_SIZE
+
+#define CONFIG_SYS_INIT_SP_OFFSET \
+	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR	\
+	(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+/* environment settings */
+#if defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_SYS_MMC_ENV_DEV		0
+#elif defined(CONFIG_ENV_IS_IN_NAND)
+#undef CONFIG_ENV_SIZE
+#define CONFIG_ENV_SECT_SIZE		(128 << 10)
+#define CONFIG_ENV_SIZE			CONFIG_ENV_SECT_SIZE
+#endif
+
+/* NAND */
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_BASE		0x40000000
+
+/* USB Configs */
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#define CONFIG_MXC_USB_PORTSC		(PORT_PTS_UTMI | PORT_PTS_PTW)
+#define CONFIG_MXC_USB_FLAGS		0
+#define CONFIG_USB_MAX_CONTROLLER_COUNT	1
+
+#ifdef CONFIG_CMD_NET
+#define IMX_FEC_BASE			ENET_BASE_ADDR
+#define CONFIG_FEC_MXC_PHYADDR		0x1
+#define CONFIG_FEC_XCV_TYPE		RMII
+#define CONFIG_ETHPRIME			"eth0"
+#endif
+
+#define CONFIG_IMX_THERMAL
+
+#define CONFIG_FEC_ENET_DEV		1
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"console=ttymxc0,115200n8\0" \
+	"image=zImage\0" \
+	"fdtfile=imx6ull-seeed-npi-dev-board.dtb\0" \
+	"mtdids=" CONFIG_MTDIDS_DEFAULT "\0" \
+	"mtdparts=" CONFIG_MTDPARTS_DEFAULT "\0" \
+	"fdt_addr_r=0x82000000\0" \
+	"kernel_addr_r=0x81000000\0" \
+	"pxefile_addr_r=0x87100000\0" \
+	"ramdisk_addr_r=0x82100000\0" \
+	"scriptaddr=0x87000000\0" \
+	"root=/dev/mmcblk0p2 rootwait\0" \
+	BOOTENV
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(UBIFS, ubifs, 0) \
+	func(PXE, pxe, na) \
+	func(DHCP, dhcp, na)
+
+#include <config_distro_bootcmd.h>
+
+#endif /* _NPI_IMX6ULL_H */