1 U-Boot for Odroid X2/U3/XU3/XU4/HC1
2 ========================
6 This is a quick instruction for setup Odroid boards.
7 Board config: odroid_config for X2/U3
8 Board config: odroid-xu3_config for XU3/XU4/HC1
12 This U-BOOT config can be used on three boards:
15 with CPU Exynos 4412 rev 2.0 and 2GB of RAM
19 with CPU Exynos5422 and 2GB of RAM
23 iROM->BL1->(BL2 + TrustZone)->U-BOOT
25 This version of U-BOOT doesn't implement SPL. So, BL1, BL2, and TrustZone
26 binaries are needed to boot up.
29 It can be found in "boot.tar.gz" from here:
30 http://dev.odroid.com/projects/4412boot/wiki/FrontPage?action=download&value=boot.tar.gz
32 http://odroid.in/guides/ubuntu-lfs/boot.tar.gz
35 It can be downloaded from:
36 https://github.com/hardkernel/u-boot/tree/odroidxu3-v2012.07/sd_fuse/hardkernel_1mb_uboot
41 The table below shows SD/eMMC cards layout for U-Boot.
42 The block offset is starting from 0 and the block size is 512B.
43 -------------------------------------
44 | Binary | Block offset| part type |
45 | name | SD | eMMC |(eMMC only)|
46 -------------------------------------
47 | Bl1 | 1 | 0 | 1 (boot) |
48 | Bl2 | 31 | 30 | 1 (boot) |
49 | U-Boot | 63 | 62 | 1 (boot) |
50 | Tzsw | 2111 | 2110 | 1 (boot) |
51 | Uboot Env | 2560 | 2560 | 0 (user) |
52 -------------------------------------
54 5. Prepare the SD boot card - with SD card reader
55 =================================================
56 To prepare bootable media you need boot binaries provided by hardkernel.
57 From the downloaded files, You can find:
63 (The file names can be slightly different, but you can distinguish what they are
66 This is all you need to boot this board. But if you want to use your custom
67 U-Boot then you need to change u-boot.bin with your own U-Boot binary*
68 and run the script "sd_fusing.sh" - this script is valid only for SD card.
71 The proper binary file of current U-Boot is u-boot-dtb.bin.
73 quick steps for Linux:
74 - Download all files from the link at point 3 and extract it if needed.
75 - put any SD card into the SD reader
76 - check the device with "dmesg"
77 - run ./sd_fusing.sh /dev/sdX - where X is SD card device (but not a partition)
78 Check if Hardkernel U-Boot is booting, and next do the same with your U-Boot.
80 6. Prepare the eMMC boot card
81 with a eMMC card reader (boot from eMMC card slot)
82 =====================================================
83 To boot the device from the eMMC slot you should use a special card reader
84 which supports eMMC partition switch. All of the boot binaries are stored
85 on the eMMC boot partition which is normally hidden.
87 The "sd_fusing.sh" script can be used after updating offsets of binaries
88 according to the table from point 4. Be sure that you are working on the right
89 eMMC partition - its size is usually very small, about 1-4 MiB.
91 7. Prepare the eMMC boot card
92 with a SD card reader (boot from SD card slot)
93 =================================================
94 If you have an eMMC->microSD adapter you can prepare the card as in point 5.
95 But then the device can boot only from the SD card slot.
97 8. Prepare the boot media using Hardkernel U-Boot
98 =================================================
99 You can update the U-Boot to the custom one if you have a working bootloader
100 delivered with the board on the eMMC/SD card. Then follow the steps:
101 - install the android fastboot tool
102 - connect a micro usb cable to the board
103 - on the U-Boot prompt, run command: fastboot (as a root)
104 - on the host, run command: "fastboot flash bootloader u-boot-dtb.bin"
105 - the custom U-Boot should start after the board resets.
109 Default U-Boot environment is setup for fixed partition layout.
111 Partition table: MSDOS. Disk layout and files as listed in the table below.
112 ----- ------ ------ ------ -------- ---------------------------------
113 | Num | Name | FS | Size | Offset | Reguired files |
114 | | | Type | MiB | MiB | |
115 ----- ------ ------ ------ -------- ---------------------------------
116 | 1 | BOOT | fat | 100 | 2 | kernel, fdt** |
117 | 2 | ROOT | ext4 | - | | any Linux system |
118 ----- ------ ------ ------ -------- ---------------------------------
121 Supported fdt files are:
122 - exynos4412-odroidx2.dtb
123 - exynos4412-odroidu3.dtb
124 - exynos5422-odroidxu3.dtb
125 - exynos5422-odroidxu3-lite.dtb
126 - exynos5422-odroidxu4.dtb
127 - exynos5422-odroidhc1.dtb
129 Supported kernel files are:
134 The default environmental variable "dfu_alt_info" is set* for above layout.
135 Each partition size is just an example, dfu_alt_info tries init two partitions.
136 The size of each is not important.
139 $dfu_alt_info is set on a boot time and it is concatenated using two variables:
140 - $dfu_alt_boot(set dynamically)
141 - $dfu_alt_system(from current env).
143 To add any changes to dfu_alt_info - please modify $dfu_alt_system only.
144 Changes are visible after board reset.
146 10. The environment and booting the kernel
147 ==========================================
148 There are three macros defined in config for various boot options:
149 Two for both, kernel with device tree support and also without it:
150 - boot_uimg - load uImage
151 - boot_zimg - load zImage
152 If proper fdt file exists then it will be automatically loaded,
153 so for old kernel types, please remove fdt file from boot partition.
155 The third boot option for multi image support (more info: doc/uImage.FIT/)
156 - boot_fit - for binary file: "Image.itb"
158 Default boot command: "autoboot"
159 And the boot sequence is:
160 - boot_fit - if "Image.itb" exists
161 - boot_zimg - if "zImage" exists
162 - boot_uimg - if "uImage" exists
166 NOTE: This section is only for Odroid X2/U3.
168 The ethernet can be accessed after starting the USB subsystem in U-Boot.
169 The adapter does not come with a preconfigured MAC address, and hence it needs
170 to be set before starting USB.
171 setenv usbethaddr 02:DE:AD:BE:EF:FF
173 Note that in this example a locally managed MAC address is chosen. Care should
174 be taken to make these MAC addresses unique within the same subnet.
176 Start the USB subsystem:
177 Odroid # setenv usbethaddr 02:DE:AD:BE:EF:FF
181 scanning bus 0 for devices... 4 USB Device(s) found
182 scanning usb for storage devices... 1 Storage Device(s) found
183 scanning usb for ethernet devices... 1 Ethernet Device(s) found
186 Automatic IP assignment:
187 ------------------------
188 If the ethernet is connected to a DHCP server (router maybe with DHCP enabled),
189 then the below will automatically assign an ip address through DHCP.
193 Odroid # setenv autoload no
195 Waiting for Ethernet connection... done.
197 DHCP client bound to address 192.168.1.10 (524 ms)
200 Note that this automatically sets the many IP address related variables in
201 U-Boot that is obtained from the DHCP server.
203 Odroid # printenv ipaddr netmask gatewayip dnsip
205 netmask=255.255.255.0
206 gatewayip=192.168.1.1
210 The ping command can be used a test to check connectivity. In this example,
211 192.168.1.27 is a pingable server in the network.
212 Odroid # ping 192.168.1.27
213 Waiting for Ethernet connection... done.
215 host 192.168.1.27 is alive
218 Static IP assignment:
219 ---------------------
220 In the case where there are no DHCP servers in the network, or you want to
221 set the IP address statically, it can be done by:
222 Odroid # setenv ipaddr 192.168.1.10
223 Odroid # ping 192.168.1.27
224 Waiting for Ethernet connection... done.
226 host 192.168.1.27 is alive
230 Say there exists a tftp server in the network with address 192.168.1.27 and
231 it serves a kernel image (zImage.3.17) and a DTB blob (exynos4412-odroidu3.dtb)
232 that needs to be loaded and booted. It can be accomplished as below:
233 (Assumes that you have setenv usbethaddr, and have not set autoload to no)
235 Odroid # setenv serverip 192.168.1.27
236 Odroid # tftpboot 0x40080000 zImage.3.17
237 Waiting for Ethernet connection... done.
239 TFTP from server 192.168.1.27; our IP address is 192.168.1.10
240 Filename 'zImage.3.17'.
241 Load address: 0x40080000
242 Loading: #################################################################
243 #################################################################
244 #################################################################
245 #######################
248 Bytes transferred = 3194200 (30bd58 hex)
249 Odroid # tftpboot 0x42000000 exynos4412-odroidu3.dtb
250 Waiting for Ethernet connection... done.
252 TFTP from server 192.168.1.27; our IP address is 192.168.1.10
253 Filename 'exynos4412-odroidu3.dtb'.
254 Load address: 0x42000000
258 Bytes transferred = 46935 (b757 hex)
259 Odroid # printenv bootargs
260 bootargs=Please use defined boot
261 Odroid # setenv bootargs console=ttySAC1,115200n8 root=/dev/mmcblk0p2 rootwait
262 Odroid # bootz 40080000 - 42000000
263 Kernel image @ 0x40080000 [ 0x000000 - 0x30bd58 ]
264 ## Flattened Device Tree blob at 42000000
265 Booting using the fdt blob at 0x42000000
266 Loading Device Tree to 4fff1000, end 4ffff756 ... OK
270 [ 0.000000] Booting Linux on physical CPU 0xa00
273 In the above example you can substitute 'dhcp' for 'tftpboot' as well.
277 Similarly we can use the USB storage to load the kernel image/initrd/fdt etc
278 and boot. For this example, there is a USB drive plugged in. It has a FAT
279 1st partition and an EXT 2nd partition. Using the generic FS (ls/load) makes
280 it even easier to work with FAT/EXT file systems.
281 For this example the second EXT partition is used for booting and as rootfs.
282 The boot files - kernel and the dtb are present in the /boot directory of the
288 scanning bus 0 for devices... 4 USB Device(s) found
289 scanning usb for storage devices... 1 Storage Device(s) found
290 scanning usb for ethernet devices...
291 Error: sms0 address not set. <----- Note the error as usbethaddr
292 Warning: failed to set MAC address <----- is not set.
293 1 Ethernet Device(s) found
296 Partition Map for USB device 0 -- Partition Type: DOS
298 Part Start Sector Num Sectors UUID Type
299 1 3072 263168 000c4046-01 06
300 2 266240 13457408 000c4046-02 83
302 Odroid # ls usb 0:2 /boot
307 101420 config-3.8.13.23
308 2127254 initrd.img-3.8.13.23
310 2194825 uInitrd-3.8.13.23
312 101448 config-3.8.13.26
313 2127670 uInitrd-3.8.13.26
314 2127606 initrd.img-3.8.13.26
315 3194200 zImage.3.17 <--- Kernel
316 46935 exynos4412-odroidu3.dtb <--- DTB
317 Odroid # load usb 0:2 40080000 /boot/zImage.3.17
318 3194200 bytes read in 471 ms (6.5 MiB/s)
319 Odroid # load usb 0:2 42000000 /boot/exynos4412-odroidu3.dtb
320 46935 bytes read in 233 ms (196.3 KiB/s)
321 Odroid # setenv bootargs console=ttySAC1,115200n8 root=/dev/sda2 rootwait
322 Odroid # bootz 40080000 - 42000000
323 Kernel image @ 0x40080000 [ 0x000000 - 0x30bd58 ]
324 ## Flattened Device Tree blob at 42000000
325 Booting using the fdt blob at 0x42000000
326 Loading Device Tree to 4fff1000, end 4ffff756 ... OK
330 [ 0.000000] Booting Linux on physical CPU 0xa00
332 Please refer to README.usb for additional information.