ASUS M4A785-M

This HOWTO explains how to use coreboot on the ASUS M4A785-M board.

Status

Device/functionality	Status	Comments
CPU
CPU works	OK	Tested: AMD Athlon64 X2 240e.
L1 cache enabled	OK	-
L2 cache enabled	OK	-
L3 cache enabled	N/A
Multiple CPU support	N/A
Multi-core support	OK
Hardware virtualization	OK
RAM
EDO	N/A
SDRAM	N/A
SO-DIMM	N/A
DDR	N/A	N/A
DDR2	OK	2G works, 4G or more does not.
DDR3	N/A
Dual channel support	Untested
ECC support	Untested
On-board Hardware
On-board IDE 3.5"	OK
On-board IDE 2.5"	N/A
On-board SATA	OK	SATA ports 5-6 untested
On-board SCSI	Unknown
On-board USB
On-board VGA	OK
On-board ethernet	OK
On-board audio	No	Linux driver crashes.
On-board modem	N/A
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	OK	See known issues.
Mini-PCI add-on cards	N/A
PCI-X add-on cards	N/A
AGP graphics cards	N/A
PCI Express x1 add-on cards
PCI Express x2 add-on cards	N/A
PCI Express x4 add-on cards	Untested
PCI Express x8 add-on cards	N/A
PCI Express x16 add-on cards	Untested
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	No DB-9 connector, pins on board only
Serial port 2 (COM2)	N/A
Parallel port	Untested	No connector, pins on board only
PS/2 keyboard	OK
PS/2 mouse	Untested
Game port	N/A
Infrared	N/A
PC speaker	Untested
DiskOnChip	N/A
Miscellaneous
Sensors / fan control	Untested
Hardware watchdog	N/A
SMBus	Unknown
CAN bus	N/A
CPU frequency scaling	Untested
Other powersaving features	Untested
ACPI	Partial
Reboot
Poweroff
Suspend	Unknown
Nonstandard LEDs
High precision event timers (HPET)
Random number generator (RNG)	Untested
Wake on modem ring	Untested
Wake on LAN
Wake on keyboard	Untested
Wake on mouse	Untested
Flashrom	OK

Building coreboot

See the Build HOWTO for information on how to build coreboot for this board.

Revision 5795 builds with patches. TODO: Details.

Known issues

• ...

RAM

• 2 GB RAM (1x2GB) - Boots
• 4 GB RAM (2x2GB) - Payload crashes
• 6 GB RAM (3x2GB) - Payload crashes

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.