mx6: add common SPL configuration

Add a common header which can hopefully be shared amon imx6 SPL users

Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Nikita Kiryanov <nikita@compulab.co.il>

include/configs/imx6_spl.h

+/*
+ * Copyright (C) 2014 Gateworks Corporation
+ * Author: Tim Harvey <tharvey@gateworks.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+#ifndef __IMX6_SPL_CONFIG_H
+#define __IMX6_SPL_CONFIG_H
+
+#ifdef CONFIG_SPL
+
+#define CONFIG_SPL_FRAMEWORK
+
+/*
+ * see Figure 8-3 in IMX6DQ/IMX6SDL Reference manuals:
+ *  - IMX6SDL OCRAM (IRAM) is from 0x00907000 to 0x0091FFFF
+ *  - IMX6DQ has 2x IRAM of IMX6SDL but we intend to support IMX6SDL as well
+ *  - BOOT ROM stack is at 0x0091FFB8
+ *  - if icache/dcache is enabled (eFuse/strapping controlled) then the
+ *    IMX BOOT ROM will setup MMU table at 0x00918000, therefore we need to
+ *    fit between 0x00907000 and 0x00918000.
+ *  - Additionally the BOOT ROM loads what they consider the firmware image
+ *    which consists of a 4K header in front of us that contains the IVT, DCD
+ *    and some padding thus 'our' max size is really 0x00908000 - 0x00918000
+ *    or 64KB
+ */
+#define CONFIG_SPL_LDSCRIPT	"arch/arm/cpu/armv7/omap-common/u-boot-spl.lds"
+#define CONFIG_SPL_TEXT_BASE		0x00908000
+#define CONFIG_SPL_MAX_SIZE		(64 * 1024)
+#define CONFIG_SPL_START_S_PATH		"arch/arm/cpu/armv7"
+#define CONFIG_SPL_STACK		0x0091FFB8
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_I2C_SUPPORT
+#define CONFIG_SPL_GPIO_SUPPORT
+
+/* NAND support */
+#if defined(CONFIG_SPL_NAND_SUPPORT)
+#define CONFIG_SPL_NAND_MXS
+#define CONFIG_SPL_DMA_SUPPORT
+#endif
+
+/* MMC support */
+#if defined(CONFIG_SPL_MMC_SUPPORT)
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	138 /* offset 69KB */
+#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	800 /* 400 KB */
+#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION	1
+#define CONFIG_SYS_MONITOR_LEN  (CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS/2*1024)
+#endif
+
+/* SATA support */
+#if defined(CONFIG_SPL_SATA_SUPPORT)
+#define CONFIG_SPL_SATA_BOOT_DEVICE		0
+#define CONFIG_SYS_SATA_FAT_BOOT_PARTITION	1
+#endif
+
+/* Define the payload for FAT/EXT support */
+#if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
+#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME  "u-boot.img"
+#define CONFIG_SPL_LIBDISK_SUPPORT
+#endif
+
+#define CONFIG_SPL_BSS_START_ADDR	0x18200000
+#define CONFIG_SPL_BSS_MAX_SIZE		0x100000	/* 1 MB */
+#define CONFIG_SYS_SPL_MALLOC_START	0x18300000
+#define CONFIG_SYS_SPL_MALLOC_SIZE	0x3200000	/* 50 MB */
+#define CONFIG_SYS_TEXT_BASE		0x17800000
+#endif
+
+#endif