Board:msi/ms7135

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Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!

Coreboot on the K8N Neo3 (MS-7135).

There are two versions of this board. The K8N Neo3 H has a solder-on PLCC flash and brown AGR slot. The K8N Neo3 F has a yellow AGR slot and a socketed flash.

In addition to the stock 512KiB LPC flash (such as Windbond W39V040A), 1MiB LPC flashes (SST 49VF080A) are usable.

Voltage Control

This section is presented for reference, coreboot currently ignores this chip, leaving the hardware-default memory voltage at 2.55v and the CK804 at 1.50v.

The MS-6 chip appears at address 0x2f (or 0x5e if you consider the R/W bit part of the address) on the secondary SMBus.

a register index, and then reading or writing a data byte.

MS-6 registers as used on MS-7135

index	function
0x00	RAM voltage adjust
0x02	Southbridge core voltage adjust, via MS-6+ companion

Index 0x00

value	volts
0x00	2.55v
0x01	2.50v
0x02	2.60v
0x03	2.65v
0x04	2.70v

Index 0x02

value	volts
0x10	1.50v
0x11	1.55v
0x12	1.60v

A keen observer will note these are in this order in the OEM BIOS setup program.

The Mainboard

Device/functionality	Status	Comments
CPU
CPU works	OK	cpu0: AMD Athlon(tm) 64 Processor 3200+, 2210.29 MHz
L1 cache enabled	OK	cpu0: I-cache 64 KB 64B/line 2-way, D-cache 64 KB 64B/line 2-way
L2 cache enabled	OK	cpu0: L2 cache 512 KB 64B/line 16-way
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	OK
DDR2	N/A
DDR3	N/A
Dual channel support	N/A
ECC support	No	Using ECC RAM causes machine to fail to get very far out of CAR.
On-board Hardware
On-board IDE 3.5"	OK
On-board IDE 2.5"	N/A
On-board SATA	OK
On-board SCSI	N/A
On-board USB	OK
On-board VGA	N/A
On-board Ethernet	OK
On-board Audio	OK
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
On-board Wifi	N/A
On-board Bluetooth	N/A
On-board SD card reader	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
Mini-PCI add-on cards	N/A
Mini-PCI-Express add-on cards	Unknown
PCI-X add-on cards	N/A
AGP graphics cards	OK	AGR slot, it's really legacy PCI. Interrupts untested.
PCI Express x1 add-on cards	OK
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	OK
PCI Express x32 add-on cards	N/A
HTX add-on cards	N/A
Legacy / Super I/O
Floppy	Untested
Serial port 1 (COM1)	OK
Serial port 2 (COM2)	OK
Parallel port	Untested	lpt0 at isa0 port 0x378-0x37b irq 7
PS/2 keyboard	OK
PS/2 mouse	OK
Game port	N/A
Infrared	N/A
PC speaker	OK
DiskOnChip	N/A
Input
Trackpoint	N/A
Touchpad	N/A
Fn Hotkeys	N/A
Fingerprint Reader	N/A
Laptop
Docking VGA	N/A
Docking LAN	N/A
Docking USB	N/A
Docking Audio	N/A
Docking Displayport	N/A
Thinklight	N/A
Webcam	N/A
Miscellaneous
Sensors / fan control	OK
Hardware watchdog	Unknown
SMBus	OK	interrupts untested
CAN bus	N/A
CPU frequency scaling	No	reboots when FID is changed
Other powersaving features	N/A
ACPI	No	There's no ACPI implementation for this board.
Reboot	OK
Poweroff	No	may need ACPI to work
Suspend	Unknown
Nonstandard LEDs	N/A
High precision event timers (HPET)	Unknown
Random number generator (RNG)	N/A
Wake on modem ring	Unknown
Wake on LAN	Unknown
Wake on keyboard	Unknown
Wake on mouse	Unknown
TPM	Unknown
Flashrom	OK