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>
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 * */