readme.txt
1Technologic Systems TS-7680 SBC
2===============================
3
4This document explains how to set up a basic Buildroot system for
5the Technologic Systems TS-7680 Single Board Computer.
6
7The TS-7680 SBC is based on the Freescale i.MX286 ARM ARM926EJ-S
8running at 454MHz. The TS-7680 features are 10/100 Ethernet ports,
9Wi-Fi, microSD card, eMMC, NOR Flash, USB host port, CAN ports,
10relays and ADC/DAC. More details on the board here:
11https://wiki.embeddedarm.com/wiki/TS-7680
12
13The TS-7680 uses a 4.9 Linux kernel provided by Technologic Systems.
14
15To build the default configuration you only have to run:
16
17 $ make ts7680_defconfig
18 $ make
19
20The output looks like:
21output/images
22├── imx28-ts7680.dtb
23├── rootfs.ext2
24├── rootfs.ext4 -> rootfs.ext2
25├── rootfs.tar
26├── sdcard.img
27└── uImage
28
29The provided genimage configuration generates an image file containing
30two partitions. The first one is unused, but mandatory as the
31TS-7680 built-in bootloader loads the Linux uImage from the /boot
32directory in the second partition. The second partition contains the
33rootfs with the Linux uImage into the /boot directory.
34
35 $ fdisk output/images/sdcard.img
36 output/images/sdcard.img1 1 1 1 512B 0 Empty
37 output/images/sdcard.img2 2 524289 524288 256M 83 Linux
38
39This image can be directly written to an SD card.
40
41 $ sudo dd if=output/images/sdcard.img of=/dev/mmcblk0
42
43To boot with Buildroot, insert this SD card on the board, make sure
44the SD jumper is present and the U-Boot jumper is not.
45
46The bootloader comes pre-flashed on the board on an SPI flash. Since
47updating the bootloader is risky and not trivial, it is not included
48in the Buildroot defconfig. Refer to
49https://wiki.embeddedarm.com/wiki/TS-7680#U-Boot for details on
50which U-Boot config to use and how to flash it.
51