--- /dev/null
+ U-boot for Odroid X2/U3
+========================
+
+1. Summary
+==========
+This is a quick instruction for setup Odroid boards based on Exynos4412.
+Board config: odroid_config
+
+2. Supported devices
+====================
+This U-BOOT config can be used on two boards:
+- Odroid U3
+- Odroid X2
+with CPU Exynos 4412 rev 2.0 and 2GB of RAM
+
+3. Boot sequence
+================
+iROM->BL1->(BL2 + TrustZone)->U-BOOT
+
+This version of U-BOOT doesn't implement SPL but it is required(BL2)
+and can be found in "boot.tar.gz" from here:
+http://dev.odroid.com/projects/4412boot/wiki/FrontPage?action=download&value=boot.tar.gz
+or here:
+http://odroid.in/guides/ubuntu-lfs/boot.tar.gz
+
+4. Boot media layout
+====================
+The table below shows SD/eMMC cards layout for U-boot.
+The block offset is starting from 0 and the block size is 512B.
+ -------------------------------------
+| Binary | Block offset| part type |
+| name | SD | eMMC |(eMMC only)|
+ -------------------------------------
+| Bl1 | 1 | 0 | 1 (boot) |
+| Bl2 | 31 | 30 | 1 (boot) |
+| U-boot | 63 | 62 | 1 (boot) |
+| Tzsw | 2111 | 2110 | 1 (boot) |
+| Uboot Env | 2500 | 2500 | 0 (user) |
+ -------------------------------------
+
+5. Prepare the SD boot card - with SD card reader
+=================================================
+To prepare bootable media you need boot binaries provided by hardkernel.
+File "boot.tar.gz" (link in point 3.) contains:
+- E4412_S.bl1.HardKernel.bin
+- E4412_S.tzsw.signed.bin
+- bl2.signed.bin
+- sd_fusing.sh
+- u-boot.bin
+
+This is all you need to boot this board. But if you want to use your custom
+u-boot then you need to change u-boot.bin with your own u-boot binary*
+and run the script "sd_fusing.sh" - this script is valid only for SD card.
+
+*note:
+The proper binary file of current U-boot is u-boot-dtb.bin.
+
+quick steps for Linux:
+- extract boot.tar.gz
+- put any SD card into the SD reader
+- check the device with "dmesg"
+- run ./sd_fusing.sh /dev/sdX - where X is SD card device (but not a partition)
+Check if Hardkernel U-boot is booting, and next do the same with your U-boot.
+
+6. Prepare the eMMC boot card
+ with a eMMC card reader (boot from eMMC card slot)
+=====================================================
+To boot the device from the eMMC slot you should use a special card reader
+which supports eMMC partiion switch. All of the boot binaries are stored
+on the eMMC boot partition which is normally hidden.
+
+The "sd_fusing.sh" script can be used after updating offsets of binaries
+according to the table from point 4. Be sure that you are working on the right
+eMMC partition - its size is usually very small, about 1-4 MiB.
+
+7. Prepare the eMMC boot card
+ with a SD card reader (boot from SD card slot)
+=================================================
+If you have an eMMC->microSD adapter you can prepare the card as in point 5.
+But then the device can boot only from the SD card slot.
+
+8. Prepare the boot media using Hardkernel U-boot
+=================================================
+You can update the U-boot to the custom one if you have an working bootloader
+delivered with the board on a eMMC/SD card. Then follow the steps:
+- install the android fastboot tool
+- connect a micro usb cable to the board
+- on the U-boot prompt, run command: fastboot (as a root)
+- on the host, run command: "fastboot flash bootloader u-boot-dtb.bin"
+- the custom U-boot should start after the board resets.
+
+9. Partition layout
+====================
+Default U-boot environment is setup for fixed partiion layout.
+
+Partition table: MSDOS. Disk layout and files as listed in the table below.
+ ----- ------ ------ ------ -------- ---------------------------------
+| Num | Name | FS | Size | Offset | Reguired files |
+| | | Type | MiB | MiB | |
+ ----- ------ ------ ------ -------- ---------------------------------
+| 1 | BOOT | fat | 100 | 2 | kernel, fdt** |
+| 2 | ROOT | ext4 | - | | any Linux system |
+ ----- ------ ------ ------ -------- ---------------------------------
+
+**note:
+Supported fdt files are:
+- exynos4412-odroidx2.dtb
+- exynos4412-odroidu3.dtb
+
+Supported kernel files are:
+- Image.itb
+- zImage
+- uImage
+
+The default environmental variable "dfu_alt_info" is set* for above layout.
+Each partition size is just an example, dfu_alt_info tries init two partitions.
+The size of each is not important.
+
+*note:
+$dfu_alt_info is set on a boot time and it is concatenated using two variables:
+- $dfu_alt_boot(set dynamically)
+- $dfu_alt_system(from current env).
+
+To add any changes to dfu_alt_info - please modify $dfu_alt_system only.
+Changes are visible after board reset.
+
+10. The environment and booting the kernel
+==========================================
+There are three macros defined in config for various boot options:
+Two for both, kernel with device tree support and also without it:
+- boot_uimg - load uImage
+- boot_zimg - load zImage
+If proper fdt file exists then it will be automatically loaded,
+so for old kernel types, please remove fdt file from boot partition.
+
+The third boot option for multi image support (more info: doc/uImage.FIT/)
+- boot_fit - for binary file: "Image.itb"
+
+Default boot command: "autoboot"
+And the boot sequence is:
+- boot_fit - if "Image.itb" exists
+- boot_zimg - if "zImage" exists
+- boot_uimg - if "uImage" exists
--- /dev/null
+/*
+ * Copyright (C) 2014 Samsung Electronics
+ * Sanghee Kim <sh0130.kim@samsung.com>
+ * Piotr Wilczek <p.wilczek@samsung.com>
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * Configuation settings for the Odroid-U3 (EXYNOS4412) board.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __CONFIG_ODROID_U3_H
+#define __CONFIG_ODROID_U3_H
+
+#include <configs/exynos4-dt.h>
+
+#define CONFIG_SYS_PROMPT "Odroid # " /* Monitor Command Prompt */
+
+#undef CONFIG_DEFAULT_DEVICE_TREE
+#define CONFIG_DEFAULT_DEVICE_TREE exynos4412-odroid
+
+#define CONFIG_SYS_L2CACHE_OFF
+#ifndef CONFIG_SYS_L2CACHE_OFF
+#define CONFIG_SYS_L2_PL310
+#define CONFIG_SYS_PL310_BASE 0x10502000
+#endif
+
+#define CONFIG_MACH_TYPE 4289
+
+#define CONFIG_NR_DRAM_BANKS 8
+#define CONFIG_SYS_SDRAM_BASE 0x40000000
+#define SDRAM_BANK_SIZE (256 << 20) /* 256 MB */
+#define PHYS_SDRAM_1 CONFIG_SYS_SDRAM_BASE
+
+/* memtest works on */
+#define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_SDRAM_BASE + 0x5E00000)
+#define CONFIG_SYS_LOAD_ADDR (CONFIG_SYS_SDRAM_BASE + 0x3E00000)
+#define CONFIG_SYS_TEXT_BASE 0x43e00000
+
+#include <linux/sizes.h>
+/* Size of malloc() pool */
+#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (80 * SZ_1M))
+
+/* select serial console configuration */
+#define CONFIG_SERIAL1
+#define CONFIG_BAUDRATE 115200
+
+/* Console configuration */
+#define CONFIG_SYS_CONSOLE_INFO_QUIET
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+
+#define CONFIG_CMD_BOOTZ
+#define CONFIG_FIT
+#define CONFIG_FIT_VERBOSE
+#define CONFIG_BOOTARGS "Please use defined boot"
+#define CONFIG_BOOTCOMMAND "run autoboot"
+#define CONFIG_DEFAULT_CONSOLE "console=ttySAC1,115200n8\0"
+
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR \
+ - GENERATED_GBL_DATA_SIZE)
+
+#define CONFIG_SYS_MEM_TOP_HIDE (SZ_1M) /* ram console */
+
+#define CONFIG_SYS_MONITOR_BASE 0x00000000
+
+#define CONFIG_ENV_IS_IN_MMC
+#define CONFIG_SYS_MMC_ENV_DEV CONFIG_MMC_DEFAULT_DEV
+#define CONFIG_ENV_SIZE 4096
+#define CONFIG_ENV_OFFSET (SZ_1K * 1280) /* 1.25 MiB offset */
+#define CONFIG_ENV_OVERWRITE
+
+/* Partitions name */
+#define PARTS_BOOT "boot"
+#define PARTS_ROOT "platform"
+
+#define CONFIG_DFU_ALT \
+ "uImage fat 0 1;" \
+ "zImage fat 0 1;" \
+ "Image.itb fat 0 1;" \
+ "uInitrd fat 0 1;" \
+ "exynos4412-odroidu3.dtb fat 0 1;" \
+ "exynos4412-odroidx2.dtb fat 0 1;" \
+ ""PARTS_BOOT" part 0 1;" \
+ ""PARTS_ROOT" part 0 2\0" \
+
+#define CONFIG_SET_DFU_ALT_INFO
+#define CONFIG_SET_DFU_ALT_BUF_LEN (SZ_1K)
+
+#define CONFIG_DFU_ALT_BOOT_EMMC \
+ "u-boot raw 0x3e 0x800 mmcpart 1;" \
+ "bl1 raw 0x0 0x1e mmcpart 1;" \
+ "bl2 raw 0x1e 0x1d mmcpart 1;" \
+ "tzsw raw 0x83e 0x138 mmcpart 1\0"
+
+#define CONFIG_DFU_ALT_BOOT_SD \
+ "u-boot raw 0x3f 0x800;" \
+ "bl1 raw 0x1 0x1e;" \
+ "bl2 raw 0x1f 0x1d;" \
+ "tzsw raw 0x83f 0x138\0"
+
+/*
+ * Bootable media layout:
+ * dev: SD eMMC(part boot)
+ * BL1 1 0
+ * BL2 31 30
+ * UBOOT 63 62
+ * TZSW 2111 2110
+ * ENV 2560 2560(part user)
+ *
+ * MBR Primary partiions:
+ * Num Name Size Offset
+ * 1. BOOT: 100MiB 2MiB
+ * 2. ROOT: -
+*/
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "loadkernel=fatload mmc ${mmcbootdev}:${mmcbootpart} ${kerneladdr} " \
+ "${kernelname}\0" \
+ "loadinitrd=fatload mmc ${mmcbootdev}:${mmcbootpart} ${initrdaddr} " \
+ "${initrdname}\0" \
+ "loaddtb=fatload mmc ${mmcbootdev}:${mmcbootpart} ${fdtaddr} " \
+ "${fdtfile}\0" \
+ "check_ramdisk=" \
+ "if run loadinitrd; then " \
+ "setenv initrd_addr ${initrdaddr};" \
+ "else " \
+ "setenv initrd_addr -;" \
+ "fi;\0" \
+ "check_dtb=" \
+ "if run loaddtb; then " \
+ "setenv fdt_addr ${fdtaddr};" \
+ "else " \
+ "setenv fdt_addr;" \
+ "fi;\0" \
+ "kernel_args=" \
+ "setenv bootargs root=/dev/mmcblk${mmcrootdev}p${mmcrootpart}" \
+ " rootwait ${console} ${opts}\0" \
+ "boot_fit=" \
+ "setenv kerneladdr 0x42000000;" \
+ "setenv kernelname Image.itb;" \
+ "run loadkernel;" \
+ "run kernel_args;" \
+ "bootm ${kerneladdr}#${boardname}\0" \
+ "boot_uimg=" \
+ "setenv kerneladdr 0x40007FC0;" \
+ "setenv kernelname uImage;" \
+ "run check_dtb;" \
+ "run check_ramdisk;" \
+ "run loadkernel;" \
+ "run kernel_args;" \
+ "bootm ${kerneladdr} ${initrd_addr} ${fdt_addr};\0" \
+ "boot_zimg=" \
+ "setenv kerneladdr 0x40007FC0;" \
+ "setenv kernelname zImage;" \
+ "run check_dtb;" \
+ "run check_ramdisk;" \
+ "run loadkernel;" \
+ "run kernel_args;" \
+ "bootz ${kerneladdr} ${initrd_addr} ${fdt_addr};\0" \
+ "autoboot=" \
+ "if test -e mmc 0 Image.itb; then; " \
+ "run boot_fit;" \
+ "elif test -e mmc 0 zImage; then; " \
+ "run boot_zimg;" \
+ "elif test -e mmc 0 uImage; then; " \
+ "run boot_uimg;" \
+ "fi;\0" \
+ "console=" CONFIG_DEFAULT_CONSOLE \
+ "mmcbootdev=0\0" \
+ "mmcbootpart=1\0" \
+ "mmcrootdev=0\0" \
+ "mmcrootpart=2\0" \
+ "bootdelay=0\0" \
+ "dfu_alt_system="CONFIG_DFU_ALT \
+ "dfu_alt_info=Please reset the board\0" \
+ "consoleon=set console console=ttySAC1,115200n8; save; reset\0" \
+ "consoleoff=set console console=ram; save; reset\0" \
+ "initrdname=uInitrd\0" \
+ "initrdaddr=42000000\0" \
+ "fdtaddr=40800000\0"
+
+/* I2C */
+#define CONFIG_CMD_I2C
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_S3C24X0
+#define CONFIG_SYS_I2C_S3C24X0_SPEED 100000
+#define CONFIG_SYS_I2C_S3C24X0_SLAVE 0
+#define CONFIG_MAX_I2C_NUM 8
+#define CONFIG_SYS_I2C_INIT_BOARD
+
+/* POWER */
+#define CONFIG_POWER
+#define CONFIG_POWER_I2C
+#define CONFIG_POWER_MAX77686
+
+/* GPT */
+#define CONFIG_RANDOM_UUID
+
+/* Security subsystem - enable hw_rand() */
+#define CONFIG_EXYNOS_ACE_SHA
+#define CONFIG_LIB_HW_RAND
+
+#define CONFIG_CMD_GPIO
+
+/*
+ * Supported Odroid boards: X3, U3
+ * TODO: Add Odroid X support
+ */
+#define CONFIG_MISC_COMMON
+#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
+#define CONFIG_BOARD_TYPES
+#define CONFIG_MISC_INIT_R
+
+#undef CONFIG_REVISION_TAG
+
+#endif /* __CONFIG_H */
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