Technologic Systems TS-4800
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===========================
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This document explains how to set up a basic Buildroot system for the
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Technologic Systems TS-4800 System on Module.
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The TS-4800 is a TS-SOCKET macrocontroller board based on the Freescale
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i.MX515 ARM Cortex-A8 CPU running at 800MHz. The TS-4800 features 10/100
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Ethernet, high speed USB host and device (OTG), microSD card, and 256MB
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XNAND drive. More details on the board here:
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http://wiki.embeddedarm.com/wiki/TS-4800
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The TS-4800 is supported by mainline Linux as of 4.5 and by U-boot as of
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v2016-07. The defconfig includes a custom 1st level bootloader located
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in boot/ts4800-mbrboot. This one scans the SD card's partition table to
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find partition having the 0xDA type, corresponding to U-boot.
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To build the default configuration you only have to:
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$ make ts4800_defconfig
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$ make
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The ouput looks like:
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output/images/
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├── boot.vfat
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├── imx51-ts4800.dtb
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├── mbrboot.bin
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├── rootfs.ext2
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├── rootfs.ext4 -> rootfs.ext2
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├── rootfs.tar
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├── sdcard.img
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├── u-boot.bin
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└── zImage
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The provided post-image script generates an image file containing 3
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partitions for U-boot, Linux kernel + device tree and rootfs
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respectively:
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$ fdisk output/images/sdcard.img
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Device Boot Start End Blocks Id System
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output/images/sdcard.img1 1 512 256 da Non-FS data
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output/images/sdcard.img2 513 16896 8192 c W95 FAT32 (LBA)
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output/images/sdcard.img3 16897 541184 262144 83 Linux
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This image can be directly written to an SD card.
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$ sudo dd if=output/images/sdcard.img of=/dev/mmcblk0
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In order to test the image on TS-4800 board, a TS baseboard, such as
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TS-8xxx the serie, is needed to provide power, console header, RJ45
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connector etc.
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