spi-flashrom

glasgow run spi-flashrom

Expose SPI via a socket using the flashrom serprog protocol; see https://flashrom.org.

This applet has the same default pin assignment as the memory-25x applet; see its description for details.

Usage:

glasgow run spi-flashrom -V 3.3 --freq 4000 tcp::2222
/sbin/flashrom -p serprog:ip=localhost:2222

It is also possible to flash 25-series flash chips using the memory-25x applet, which does not require a third-party tool. The advantage of using the spi-flashrom applet is that flashrom offers compatibility with a wider variety of devices, some of which may not be supported by the memory-25x applet.

usage: glasgow run spi-flashrom [-h] [-V SPEC] [--cs PIN] [--sck PIN]
                                [--copi PIN] [--cipo PIN] [--wp PIN]
                                [--hold PIN] [-f FREQ]
                                ENDPOINT

endpoint

listen at ENDPOINT, either unix:PATH or tcp:HOST:PORT

-h, --help

show this help message and exit

-V <spec>, --voltage <spec>

configure I/O port voltage to SPEC (e.g.: ‘3.3’, ‘A=5.0,B=3.3’, ‘A=SA’)

--cs <pin>

bind the applet I/O line ‘cs’ to PIN (default: ‘A5’, required)

--sck <pin>

bind the applet I/O line ‘sck’ to PIN (default: ‘A1’, required)

--copi <pin>

bind the applet I/O line ‘copi’ to PIN (default: ‘A2’, required)

--cipo <pin>

bind the applet I/O line ‘cipo’ to PIN (default: ‘A4’, required)

--wp <pin>

bind the applet I/O line ‘wp’ to PIN (default: ‘A3’, optional)

--hold <pin>

bind the applet I/O line ‘hold’ to PIN (default: ‘A0’, optional)

-f <freq>, --frequency <freq>

set SCK frequency to FREQ kHz (default: 100)