1.. SPDX-License-Identifier: GPL-2.0+
2
3U-Boot for Amlogic S400
4=======================
5
6S400 is a reference board manufactured by Amlogic with the following
7specifications:
8
9 - Amlogic A113DX ARM Cortex-A53 quad-core SoC @ 1.2GHz
10 - 1GB DDR4 SDRAM
11 - 10/100 Ethernet
12 - 2 x USB 2.0 Host
13 - eMMC
14 - Infrared receiver
15 - SDIO WiFi Module
16 - MIPI DSI Connector
17 - Audio HAT Connector
18 - PCI-E M.2 Connectors
19
20Schematics are available from Amlogic on demand.
21
22U-Boot compilation
23------------------
24
25.. code-block:: bash
26
27    $ export CROSS_COMPILE=aarch64-none-elf-
28    $ make s400_defconfig
29    $ make
30
31Image creation
32--------------
33
34Amlogic doesn't provide sources for the firmware and for tools needed
35to create the bootloader image, so it is necessary to obtain them from
36the git tree published by the board vendor:
37
38.. code-block:: bash
39
40    $ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
41    $ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
42    $ tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
43    $ tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
44    $ export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
45    $ git clone https://github.com/BayLibre/u-boot.git -b n-amlogic-openlinux-20170606 amlogic-u-boot
46    $ cd amlogic-u-boot
47    $ make axg_s400_v1_defconfig
48    $ make
49    $ export FIPDIR=$PWD/fip
50
51Go back to mainline U-boot source tree then :
52
53.. code-block:: bash
54
55    $ mkdir fip
56
57    $ cp $FIPDIR/axg/bl2.bin fip/
58    $ cp $FIPDIR/axg/acs.bin fip/
59    $ cp $FIPDIR/axg/bl21.bin fip/
60    $ cp $FIPDIR/axg/bl30.bin fip/
61    $ cp $FIPDIR/axg/bl301.bin fip/
62    $ cp $FIPDIR/axg/bl31.img fip/
63    $ cp u-boot.bin fip/bl33.bin
64
65    $ $FIPDIR/blx_fix.sh \
66    	fip/bl30.bin \
67    	fip/zero_tmp \
68    	fip/bl30_zero.bin \
69    	fip/bl301.bin \
70    	fip/bl301_zero.bin \
71    	fip/bl30_new.bin \
72    	bl30
73
74    $ $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
75
76    $ $FIPDIR/blx_fix.sh \
77    	fip/bl2_acs.bin \
78    	fip/zero_tmp \
79    	fip/bl2_zero.bin \
80    	fip/bl21.bin \
81    	fip/bl21_zero.bin \
82    	fip/bl2_new.bin \
83    	bl2
84
85    $ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl30_new.bin \
86    					--output fip/bl30_new.bin.enc \
87    					--level v3 --type bl30
88    $ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl31.img \
89    					--output fip/bl31.img.enc \
90    					--level v3 --type bl31
91    $ $FIPDIR/axg/aml_encrypt_axg --bl3sig --input fip/bl33.bin --compress lz4 \
92    					--output fip/bl33.bin.enc \
93    					--level v3 --type bl33
94    $ $FIPDIR/axg/aml_encrypt_axg --bl2sig --input fip/bl2_new.bin \
95    					--output fip/bl2.n.bin.sig
96    $ $FIPDIR/axg/aml_encrypt_axg --bootmk \
97    		--output fip/u-boot.bin \
98    		--bl2 fip/bl2.n.bin.sig \
99    		--bl30 fip/bl30_new.bin.enc \
100    		--bl31 fip/bl31.img.enc \
101    		--bl33 fip/bl33.bin.enc --level v3
102
103and then write the image to SD with:
104
105.. code-block:: bash
106
107    $ DEV=/dev/your_sd_device
108    $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
109    $ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=444
110