TS-7680 initramfs
When the board first boots up you should have a console such as:
HTLLCLLC U-Boot 2014.07-ga44367e-dirty (Aug 25 2014 - 15:52:43) CPU: Freescale i.MX28 rev1.2 at 454 MHz BOOT: SSP SD/MMC #0, 3V3 SPI: ready DRAM: 256 MiB NAND: 2048 MiB MMC: MXS MMC: 0 mxsmmc_init: initialising MMC *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Net: FEC0 [PRIME] Hit any key to stop autoboot: 0 Booting from the SD card ... 135179 bytes read in 160 ms (824.2 KiB/s) 2429960 bytes read in 816 ms (2.8 MiB/s) ## Booting kernel from Legacy Image at 42000000 ... Image Name: Linux-2.6.35.3-571-gcca29a0+ Created: 2014-09-04 18:16:53 UTC Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 2429896 Bytes = 2.3 MiB Load Address: 40008000 Entry Point: 40008000 Verifying Checksum ... OK Loading Kernel Image ... OK Starting kernel ... Uncompressing Linux... done, booting the kernel. /ts/fastboot file present. Booting to initramfs instead Booted from SD in 4.01s Initramfs Web Interface: http://ts7680-4f1113.local Total RAM: 256MB #
| Note: | Your version dates may be different depending on ship date and the image used. |
This is a minimalistic initial ram filesystem that includes our specific utilities for the board, and is then used to bootstrap the Linux root. The initramfs is built into the kernel image so it cannot be modified without rebuilding the kernel, but it does include 8 bits for common configuration option we call soft jumpers.
For most development you will want to boot to the Debian filesystem which can be reached by typing "exit" through the serial or telnet console, or by removing the file /ts/fastboot while in Debian to make the board automatically boot to Debian.
/mnt/root/ts/init
For headless applications you can create a bash script with any initialization you require in /ts/init. This does not use the same $PATH as Debian, so you should enter the full path to any applications you intend to run from this environment. The init file does not exist by default and must be created:
#!/bin/sh
/path/to/your/application &
USB update mechanism, tsinit
For implementing a custom production process or applying updates in the field, this SBC is capable of detecting a USB device and running a script. The behavior of this process can be tuned, see the config information section below. There are a few requirements of this script: the USB device itself must be the first or only USB storage device connected, the script must be on the first partition of said USB device and be named "tsinit", and the script must be world executable. PATH is passed to the tsinit script, it is what the initramfs environment PATH is, if additional PATHs are required that can be added in the tsinit script. Standard in/out are the standard console port, this means either the serial debug port, or telnet. Please note that if using telnet, output may be missed as the scripts will not wait for a telnet connection to establish, it is recommended to use a real serial port because of this.
/mnt/root/ts/initramfs-xinit
Graphical applications should use /ts/initramfs-xinit. The xinit file is used to start up a window manager and any applications. The default initramfs-xinit starts a webbrowser viewing localhost:
#!/bin/sh
# Causes .Xauthority and other temp files to be written to /root/ rather than default /
export HOME=/root/
# Disables icewm toolbars
export ICEWM_PRIVCFG=/mnt/root/root/.icewm/
# minimalistic window manager
icewm-lite &
# this loop verifies the window manager has successfully started
while ! xprop -root | grep -q _NET_SUPPORTING_WM_CHECK
do
sleep 0.1
done
# This launches the fullscreen browser. If the xinit script ever closes, x11 will close. This is why the last
# command is the target application which is started with "exec" so it will replace the xinit process id.
exec /usr/bin/fullscreen-webkit http://localhost
/mnt/root/ts/config
This config file can be used to alter many details of the initramfs boot procedure.
## This file is included by the early init system to set various bootup settings. ## if $jp7 is enabled none of these settings will be used. ## Used to control whether the FPGA is reloaded through software. ## 1 to enable reloading (default) ## 0 to disable reloading #CFG_FPGARELOAD="0" ## By default dns-sd is started which advertises the ts<model>-<last 6 of mac> ## telnet and http services using zeroconf. ## 1 to enable dns-sd (default) ## 0 to disable dns-sd #CFG_DNSSD_EN="0" ## This is used to discover hosts and advertise this host over multicast DNS. ## 1 to enable mdns (default) ## 0 to disable mdns #CFG_MDNS_EN="0" ## ifplugd is started in the initramfs to start udhcpc, and receive an ipv4ll ## address. ## 1 to enable ifplugd (default) ## 0 to disable ifplugd #CFG_IFPLUGD_EN="0" ## By default telnet is started on port 2323. ## 1 to enable telnet (default) ## 0 to disable telnet ##CFG_TELNET_EN="0" ## The busybox webserver is used to display a diagnostic web interface that can ## be used for development tasks such as rewriting the SD or uploading new ## software ## 1 to enable (default) ## 0 to disable ##CFG_HTTPD_EN="0" ## This eanbles a reset switch on DIO 29 (TS-7700), or DIO 9 on all of the ## boards. Pull low to reset the board immediately. ## 1 to enable the reset sw (default) ## 0 to disable #CFG_RESETSW_EN="0" ## The console is forwarded through xuartctl which makes the cpu console available ## over telnet or serial console. ## 1 to enable network console (default) ## 0 to disable network console #CFG_NETCONS_EN="0" ## By default Alsa will put the SGTL5000 chip into standby after 5 seconds of ## inactivity. This is desirable in that it results in lower power consumption, ## but it can result in an audible popping noise. This setting prevents ## standby so the pop is never heard. ## 1 to disable standby ## 0 to enable standby (default) #CFG_SGTLNOSTBY="1" ## xuartctl is used to access the FPGA uarts. By default it is configured to ## be IRQ driven which is optimized for best latency, but at the cost of ## additional CPU time. You can reduce this by specifying a polling rate. ## The xuartctl process also binds to all network interfaces which can provide a ## simple network API to access serial ports remotely. You can restrict this to ## the local network with the bind option. ## Configure XUART polling 100hz ## Default is IRQ driven CFG_XUARGS="--irq=100hz" ## Configure xuartctl to bind on localhost ## Default binds on all interfaces #CFG_XUARGS="--bind 127.0.0.1 --irq=100hz" ## For a full list of arguments, see the xuartctl documentation here: ## http://wiki.embeddedarm.com/wiki/Xuartctl#Usage ## By default the system will probe for up to 10s on USB for a mass storage device ## and mount the first partition. If there is an executable /tsinit script in the ## root this will be executed. This is intended for production or updates. ## 2 to enable USB init always (adds 10s or $CFG_USBTIME to startup) ## 1 to enable USB init when jp1=0 (default) ## 0 to disable USB init always #CFG_USBINIT="2" ## The USB init script by default blocks for 10s to detect a thumb drive that ## contains the tsinit script. Most flash media based drives can be detected ## in 3s or less. Some spinning media drives can take 10s, or potentially longer. ## This options is the number of seconds to wait before giving up on the ## mass storage device. #CFG_USBTIME="3" ### TS-8700 ## Using the TS-8700 baseboard the board will by default initialze all of the ## ethernet ports as individual vlan ports, eg eth0.1, eth0.2, eth0,3, and eth0.4 ## The alterantive option sets Port A to eth0.1, and Ports B-D to eth0.2, or ## you can configure all ethernet ports as a single eth0 port. ## See http://wiki.embeddedarm.com/wiki/TS-8700 for more information ## 2 disables any vlan and passes through all interfaces to eth0 ## 1 enables "WLAN" mode setting "A" as eth0.1, and all others as eth0.2 ## 0 enables "VLAN" mode for 4 individual ports (default) #CFG_4ETH="1" ### TS-4712 / TS-4720 ## These boards include an onboard switch with 2 external ports. By default ## the switch will detect if it is on a known baseboard that supports the second ## ethernet switch port, and set up VLAN rules to define eth0.1 and eth0.2. The ## other option is to configure the switch to pass through the packets to eth0 ## regarless of port. ## 2 Disable VLAN and pass through to eth0 ## 1 Enable VLAN on all baseboards ## 0 Enable VLAN on supported baseboards (Default) #CFG_2ETH="1"