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The <boot.img> option is optional in cdba. If omitted, cdba falls back to falls back to running "fastboot continue" to boot the installed operating system.
166 lines
5.0 KiB
Plaintext
166 lines
5.0 KiB
Plaintext
= CDBA control tool
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The CDBA control tool is used for remotely booting images on development boards
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attached using a CDB Assist [https://github.com/sonyxperiadev/CDB-Assist] or Conmux.
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= Dependencies
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sudo apt-get install libudev-dev libyaml-dev libftdi1-dev pkg-config meson for debian systems
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dnf install systemd-devel libyaml-devel libftdi1-devel pkg-config meson for fedora systems
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pacman -S libftdi libgpiod libyaml pkgconf meson for Arch systems
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= Device side
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On the host with the CDB Assist or Conmux attached the "cdba-server" executable is run
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from sandbox/cdba/cdba-server. Available devices are read from $HOME/.cdba
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= Build instructions
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# meson . build
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# ninja -C build
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= Client side
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The client is invoked as:
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cdba -b <board> -h <host> [-c <power-cylce-count>] [-s <status-fifo>] [boot.img]
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<host> will be connected to using ssh and <board> will be selected for
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operation. As the board's fastboot interface shows up the given boot.img
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will be transfered and booted on the device. If [boot.img] is omitted,
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"fastboot continue" is run to boot the installed operating system.
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The board will execute until the key sequence ^A q is invoked or the board
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outputs a sequence of 20 ~ (tilde) chards in a row.
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If the optional -c is given, the board will upon receiving the tilde sequence
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restart the board the given number of times. Each time booting the given
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boot.img.
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The optional -s argument can be used to specify that a fifo should be created
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and opened. cdba will request the server to start sending status/measurement
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updates, which will be written to this fifo.
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How to quit the console and close session: ctrl+a then q
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= Server side
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== Device configuration
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The list of attached devices is read from $HOME/.cdba and is YAML formatted.
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== Status command
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The "status-cmd" property for a board specifies a command line that should be
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executed to perform measurements and report status updates to the client. The
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command is expected to run for the duration of the board session and should
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produce a continuous stream of json-formatted lines of status updates according
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to the format defined in this document.
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=== Example
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devices:
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- board: db2k
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cdba: 00000001
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name: "DragonBoard2k"
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fastboot: abcdef1
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voltage: 8000
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- board: mtp2k
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conmux: mtp2k
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fastboot: abcdef2
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fastboot_set_active: true
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- board: evb2k
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users:
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- username
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console: /dev/ttyUSB0
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fastboot: abcdef3
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fastboot_set_active: true
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- board: qrd8550
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alpaca: /dev/serial/by-id/usb-QUALCOMM_Inc._Embedded_Power_Measurement__EPM__device_6E02020620151F14-if01
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console: /dev/serial/by-id/usb-QUALCOMM_MTP_Debug_Board_MT77TGG2-if00-port0
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name: QRD8550
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fastboot: 91671140
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fastboot_set_active: true
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fastboot_key_timeout: 2
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- board: testboard
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console: /dev/serial/by-id/usb-1234-if00-port0
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name: GPIO controller board
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local_gpio:
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power:
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chip: gpiochip0
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line: 7
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active_low: true
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fastboot_key:
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chip: gpiochip0
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line: 8
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active_low: true
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power_key:
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chip: gpiochip0
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line: 14
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active_low: true
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usb_disconnect:
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chip: gpiochip1
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line: 4
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fastboot: cacafada
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fastboot_set_active: true
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fastboot_key_timeout: 2
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- board: testboard2
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console: /dev/serial/by-id/usb-1234-if00-port0
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name: FTDI controller board
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ftdi_gpio:
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vendor: "0x0403"
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product: "0x6011"
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index: 0
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power:
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interface: D
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line: 7
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active_low: true
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fastboot_key:
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interface: D
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line: 8
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active_low: true
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power_key:
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interface: D
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line: 3
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active_low: true
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usb_disconnect:
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interface: D
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line: 2
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fastboot: cacafada
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fastboot_set_active: true
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fastboot_key_timeout: 2
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= Status messages
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The status messages that are used by the client fifo and the server's status
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command should be json-formatted, with one status update per line.
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Each message should contain one timestamp member "ts", and one or more
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measurement members. Like so:
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{"ts":%d.%03d, "name": {["mv"|"ma"]: %u}(, "name2": {["mv"|"ma"]: %u})*}
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The timestamp member ("ts"), should provide the time since first measurement in
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decimal form with millisecond accuracy.
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The key for the measurement members should be an identifier of the measured
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resources, and the value should be an object with members for each unit
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measured for the given resource and the measured value.
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Valid units to report are "mv", "ma", and "mw".
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Note that the cadence of measurement might differ between different items to be
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measured, so not all status messages contains data for all items that can be
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measured.
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== Examples
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Single resource "dc" measured at 20.271s, with voltage and current reported:
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{"ts":20.271, "dc":{ "mv": 12165, "ma": 114}}
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Multiple resources measured in a single status message, followed by single
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resource measurement, all with voltage and current reported:
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{"ts":38.341, "battery":{"mv":8023, "ma":725}, "vdd_cx":{"mv":750, "ma":466}}
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{"ts":44.339, "battery":{"mv":8023, "ma":733}}
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