pico-imx6: Add initial support

Add the initial support for the pico-imx6 variants.

DDR initialization is based on the TechNexion's U-Boot code.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

1 files changed, 130 insertions, 0 deletions

diff --git a/include/configs/pico-imx6.h b/include/configs/pico-imx6.h
new file mode 100644
index 0000000..2ea50f5
--- /dev/null
+++ b/include/configs/pico-imx6.h
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ *
+ * Configuration settings for the pico-imx6 board.
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include "mx6_common.h"
+
+#include "imx6_spl.h"
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN		(35 * SZ_1M) /* Increase due to DFU */
+
+#define CONFIG_MXC_UART
+#define CONFIG_MXC_UART_BASE		UART1_BASE
+
+#define CONFIG_SYS_MEMTEST_START	0x10000000
+#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + 500 * SZ_1M)
+
+/* MMC Configuration */
+#define CONFIG_SYS_FSL_ESDHC_ADDR	USDHC3_BASE_ADDR
+#define CONFIG_SUPPORT_EMMC_BOOT
+#define CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE
+
+/* USB Configs */
+#define CONFIG_MXC_USB_PORTSC		(PORT_PTS_UTMI | PORT_PTS_PTW)
+#define CONFIG_MXC_USB_FLAGS		0
+
+#define CONFIG_SYS_DFU_DATA_BUF_SIZE SZ_16M
+#define DFU_DEFAULT_POLL_TIMEOUT 300
+
+#define CONFIG_DFU_ENV_SETTINGS \
+	"dfu_alt_info=" \
+		"spl raw 0x2 0x400;" \
+		"u-boot raw 0x8a 0x1000;" \
+		"/boot/zImage ext4 0 1;" \
+		"rootfs part 0 1\0" \
+
+#define BOOTMENU_ENV \
+	"bootmenu_0=Boot using PICO-Hobbit baseboard=" \
+		"setenv baseboard hobbit\0" \
+	"bootmenu_1=Boot using PICO-Pi baseboard=" \
+		"setenv baseboard pi\0" \
+	"bootmenu_2=Boot using PICO-Dwarf baseboard=" \
+		"setenv baseboard dwarf\0" \
+	"bootmenu_3=Boot using PICO-Nymph baseboard=" \
+		"setenv baseboard nymph\0" \
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"console=ttymxc0\0" \
+	"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
+	BOOTMENU_ENV \
+	"fdt_high=0xffffffff\0" \
+	"initrd_high=0xffffffff\0" \
+	"fdt_addr_r=0x18000000\0" \
+	"fdt_addr=0x18000000\0" \
+	"mmcdev=" __stringify(CONFIG_SYS_MMC_ENV_DEV) "\0" \
+	CONFIG_DFU_ENV_SETTINGS \
+	"finduuid=part uuid mmc 0:1 uuid\0" \
+	"findbaseboard=" \
+		"if test $baseboard = ask ; then " \
+			"bootmenu -1; fi;" \
+		"if test $baseboard != ask ; then " \
+			"saveenv; fi;\0" \
+	"findfdt="\
+		"if test $baseboard = hobbit && test $board_rev = MX6Q ; then " \
+			"setenv fdtfile imx6q-pico-hobbit.dtb; fi; " \
+		"if test $baseboard = pi && test $board_rev = MX6Q ; then " \
+			"setenv fdtfile imx6q-pico-pi.dtb; fi; " \
+		"if test $baseboard = dwarf && test $board_rev = MX6Q ; then " \
+			"setenv fdtfile imx6q-pico-dwarf.dtb; fi; " \
+		"if test $baseboard = nymph && test $board_rev = MX6Q ; then " \
+			"setenv fdtfile imx6q-pico-nymph.dtb; fi; " \
+		"if test $baseboard = hobbit && test $board_rev = MX6DL ; then " \
+			"setenv fdtfile imx6dl-pico-hobbit.dtb; fi; " \
+		"if test $baseboard = pi && test $board_rev = MX6DL ; then " \
+			"setenv fdtfile imx6dl-pico-pi.dtb; fi; " \
+		"if test $baseboard = dwarf && test $board_rev = MX6DL ; then " \
+			"setenv fdtfile imx6dl-pico-dwarf.dtb; fi; " \
+		"if test $baseboard = nymph && test $board_rev = MX6DL ; then " \
+			"setenv fdtfile imx6dl-pico-nymph.dtb; fi; " \
+		"if test $fdtfile = ask; then " \
+			"echo WARNING: Could not determine dtb to use; fi; \0" \
+	"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
+	"pxefile_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
+	"ramdisk_addr_r=0x13000000\0" \
+	"ramdiskaddr=0x13000000\0" \
+	"scriptaddr=" __stringify(CONFIG_LOADADDR) "\0" \
+	BOOTENV
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(USB, usb, 0)
+
+#include <config_distro_bootcmd.h>
+
+/* 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 organization */
+#define CONFIG_ENV_SIZE			(8 * 1024)
+
+/* Environment starts at 768k = 768 * 1024 = 786432 */
+#define CONFIG_ENV_OFFSET		786432
+/*
+ * Detect overlap between U-Boot image and environment area in build-time
+ *
+ * CONFIG_BOARD_SIZE_LIMIT = CONFIG_ENV_OFFSET - u-boot.img offset
+ * CONFIG_BOARD_SIZE_LIMIT = 768k - 69k = 699k = 715776
+ *
+ * Currently CONFIG_BOARD_SIZE_LIMIT does not handle expressions, so
+ * write the direct value here
+ */
+#define CONFIG_BOARD_SIZE_LIMIT		715776
+#define CONFIG_SYS_MMC_ENV_DEV		0
+
+#endif			       /* __CONFIG_H * */