This is a customised fork of iPXE for Coinboot.
They only change is that remote syslog logging is activated.
This is done via these changes at src/config/console.h:
#define CONSOLE_SYSLOG /* Syslog console */
#define LOG_LEVEL LOG_ALL
For more details about iPXE console usage please refer to: http://ipxe.org/console#console_usages