bsh: imx8mn-smm-s2/pro: Add iMX8MN BSH SMM S2 boards

Introduce BSH SystemMaster (SMM) S2 board family, which consists of:
iMX8MN SMM S2 and iMX8MN SMM S2 PRO boards.

Add support for iMX8MN BSH SMM S2 board:

- 256 MiB DDR3 RAM
- 512MiB Nand
- USBOTG1 peripheral - fastboot.
- 100Mbit Ethernet

Add support for iMX8MN BSH SMM S2 PRO board:

- 512 MiB DDR3 RAM
- 8 GiB eMMC
- USBOTG1 peripheral - fastboot.
- 100Mbit Ethernet

Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@collabora.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>

include/configs/imx8mn_bsh_smm_s2.h

@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#ifndef __IMX8MN_BSH_SMM_S2_H
+#define __IMX8MN_BSH_SMM_S2_H
+
+#include <configs/imx8mn_bsh_smm_s2_common.h>
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(NAND, nand, 0) \
+
+#include <config_distro_bootcmd.h>
+
+#define NANDARGS \
+	"mtdids=" CONFIG_MTDIDS_DEFAULT "\0" \
+	"mtdparts=" CONFIG_MTDPARTS_DEFAULT "\0" \
+	"nandargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${nandroot} " \
+		"rootfstype=${nandrootfstype}\0" \
+	"nandroot=ubi0:root rw ubi.mtd=nandrootfs\0" \
+	"nandrootfstype=ubifs rootwait=1\0" \
+	"nandboot=echo Booting from nand ...; " \
+		"run nandargs; " \
+		"nand read ${fdt_addr_r} nanddtb; " \
+		"nand read ${loadaddr} nandkernel; " \
+		"booti ${loadaddr} - ${fdt_addr_r}\0"
+
+#define BOOTENV_DEV_NAND(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel #instance "=" \
+	"run nandboot\0"
+
+#define BOOTENV_DEV_NAME_NAND(devtypeu, devtypel, instance) \
+	#devtypel #instance " "
+
+/* Initial environment variables */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	MEM_LAYOUT_ENV_SETTINGS \
+	NANDARGS \
+	BOOTENV
+
+#define PHYS_SDRAM_SIZE			SZ_256M
+
+/* NAND */
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+
+#define CONFIG_SYS_NAND_BASE		0x20000000
+
+#endif /* __IMX8MN_BSH_SMM_S2_H */

include/configs/imx8mn_bsh_smm_s2_common.h

@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#ifndef __IMX8MN_BSH_SMM_S2_COMMON_H
+#define __IMX8MN_BSH_SMM_S2_COMMON_H
+
+#include <linux/sizes.h>
+#include <linux/stringify.h>
+#include <asm/arch/imx-regs.h>
+
+#define CONFIG_SYS_BOOTM_LEN		(32 * SZ_1M)
+
+#define CONFIG_SPL_MAX_SIZE		(148 * SZ_1K)
+#define CONFIG_SYS_MONITOR_LEN		SZ_512K
+#define CONFIG_SYS_UBOOT_BASE	\
+	(QSPI0_AMBA_BASE + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512)
+
+#define CONFIG_SPL_STACK		0x980000
+#define CONFIG_SPL_BSS_START_ADDR	0x950000
+#define CONFIG_SPL_BSS_MAX_SIZE		SZ_8K
+#define CONFIG_SYS_SPL_MALLOC_START	0x42200000
+#define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_512K
+
+
+
+#define MEM_LAYOUT_ENV_SETTINGS \
+	"scriptaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+	"kernel_addr_r=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+	"ramdisk_addr_r=0x43800000\0" \
+	"fdt_addr_r=0x43000000\0" \
+	"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
+	"bootcmd_mfg=echo Running fastboot mode; fastboot usb 0\0" \
+
+/* Link Definitions */
+
+#define CONFIG_SYS_INIT_RAM_ADDR	0x40000000
+#define CONFIG_SYS_INIT_RAM_SIZE	SZ_512K
+#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)
+
+#define CONFIG_SYS_SDRAM_BASE		0x40000000
+#define PHYS_SDRAM			0x40000000
+
+#define CONFIG_MXC_UART_BASE		UART4_BASE_ADDR
+
+/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE		SZ_2K
+#define CONFIG_SYS_MAXARGS		64
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
+					 sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/* I2C */
+
+#endif /* __IMX8MN_BSH_SMM_S2_COMMON_H */

include/configs/imx8mn_bsh_smm_s2pro.h

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#ifndef __IMX8MN_BSH_SMM_S2PRO_H
+#define __IMX8MN_BSH_SMM_S2PRO_H
+
+#include <configs/imx8mn_bsh_smm_s2_common.h>
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+
+#include <config_distro_bootcmd.h>
+
+#define EMMCARGS \
+	"fastboot_partition_alias_all=" \
+		__stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) ".0:0\0" \
+	"fastboot_partition_alias_bootloader=" \
+		__stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) ".1:0\0" \
+	"emmc_dev=" __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) "\0" \
+	"emmc_ack=1\0" \
+
+/* Initial environment variables */
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	MEM_LAYOUT_ENV_SETTINGS \
+	EMMCARGS \
+	BOOTENV
+
+#define PHYS_SDRAM_SIZE			SZ_512M
+
+/* USDHC */
+#define CONFIG_SYS_FSL_ESDHC_ADDR	0
+
+#endif /* __IMX8MN_BSH_SMM_S2PRO_H */