Jetway J7F2

This page describes how to use coreboot on the Jetway J7F2 series mainboards.

This page is a work in progress.

Status

TODO: This is work in progress!

This board works with the Epia-CN tree except that it uses a Fintek F71805F vs VIA VT1211 super io. Replace the code accordingly.

Device/functionality	Status	Comments
CPU
CPU works	OK
L1 cache enabled	OK	Always on
L2 cache enabled	OK	Always on
L3 cache enabled	N/A
Multiple CPU support	N/A
Multi-core support	N/A
Hardware virtualization	N/A
RAM
EDO	N/A
SDRAM	N/A
SO-DIMM	N/A
DDR	N/A
DDR2	OK
DDR3	N/A
Dual channel support	N/A
ECC support	?
On-board Hardware
On-board IDE 3.5"	OK
On-board IDE 2.5"	N/A
On-board SATA	OK
On-board SCSI	Unknown
On-board USB	OK
On-board VGA	OK
On-board ethernet	OK
On-board audio	OK
On-board modem
On-board FireWire	N/A
On-board smartcard reader	N/A
On-board CompactFlash	N/A
On-board PCMCIA	N/A
Add-on slots/cards
ISA add-on cards	N/A
Audio/Modem-Riser (AMR/CNR) cards	N/A
PCI add-on cards
Mini-PCI add-on cards	Unknown
PCI-X add-on cards	Unknown
AGP graphics cards	N/A
PCI Express x1 add-on cards	N/A
PCI Express x2 add-on cards	N/A
PCI Express x4 add-on cards	N/A
PCI Express x8 add-on cards	N/A
PCI Express x16 add-on cards	N/A
PCI Express x32 add-on cards	N/A
HTX add-on cards	N/A
Legacy / Super I/O
Floppy	N/A
Serial port 1 (COM1)	OK
Serial port 2 (COM2)	N/A
Parallel port
PS/2 keyboard	OK
PS/2 mouse	OK
Game port	N/A
Infrared	?
PC speaker	?
DiskOnChip	N/A
Miscellaneous
Sensors / fan control	?
Hardware watchdog	?
SMBus	Unknown
CAN bus	N/A
CPU frequency scaling	?
Other powersaving features	N/A
ACPI	?
Reboot
Poweroff
Suspend	Unknown
Nonstandard LEDs	N/A
High precision event timers (HPET)	?
Random number generator (RNG)	N/A
Wake on modem ring	Untested
Wake on LAN	Untested
Wake on keyboard	Untested
Wake on mouse	Untested
Flashrom

Known problems

• hda in Linux is hde in FILO
• loading kernel/initrd is very slow
• irq_tables.c from the factory BIOS does not work. The epia-cn table can be substituted.
• VGA console flickers badly under intense disk activity, such as dd if=/dev/hda of=/dev/hdc
• Network card loses MAC address on power-loss, preventing the Linux via-rhine driver from activating it. Latest code in src/southbridge/via/vt8237r/ may fix this, at least allowing hard-coding the MAC address into the rom. However, it is also stored somewhere else on the system (not in the factory rom) so it should be readable from somewhere.

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. In case this is not legally possible: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.