ASUS M4A78LT-M

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Status

Device/functionality Status Comments
CPU
CPU works OK Tested: AMD Athlon II X2 245e.
L1 cache enabled Untested Not tested yet
L2 cache enabled Untested Not tested yet
L3 cache enabled N/A
Multiple CPU support N/A
Multi-core support OK
Hardware virtualization Untested Not tested yet
RAM
EDO N/A
SDRAM N/A
SO-DIMM N/A
DDR N/A
DDR2 N/A
DDR3 OK 2G works, see also #Known issues.
Dual channel support Untested
ECC support Untested
On-board Hardware
On-board IDE 3.5" Untested
On-board IDE 2.5" N/A
On-board SATA OK Tested on port 1, untested for the rest
On-board SCSI Unknown
On-board USB OK Untested
On-board VGA Untested
On-board ethernet Untested
On-board audio No Linux driver crashes / Kernel panic. See also #Known issues.
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 Untested
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 Untested
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 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 COM1 is only pin header on board. DB-9 serial connector is available, but not included with board.
Serial port 2 (COM2) N/A
Parallel port Untested
PS/2 keyboard Untested
PS/2 mouse N/A
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 Untested
Reboot Untested
Poweroff Untested
Suspend Unknown
Nonstandard LEDs Untested
High precision event timers (HPET) Untested
Random number generator (RNG) Untested
Wake on modem ring Untested
Wake on LAN Untested
Wake on keyboard Untested
Wake on mouse Untested
Flashrom OK The chip is SPI

Introduction

This pages is about the port to the M4A78LT-M, this mainboard is very similar to the M4A785-M, but:

  • it has DDR3 instead of DDR2


Building Coreboot

To build coreboot:

  • Apply that diff:
diff --git a/src/mainboard/asus/m4a785-m/Kconfig b/src/mainboard/asus/m4a785-m/Kconfig
index 84cc06c..25b3345 100644
--- a/src/mainboard/asus/m4a785-m/Kconfig
+++ b/src/mainboard/asus/m4a785-m/Kconfig
@@ -4,7 +4,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
        def_bool y
        select ARCH_X86
        select CPU_AMD_SOCKET_AM3
-       select DIMM_DDR2
+       select DIMM_DDR3
+       select DIMM_REGISTERED
        select NORTHBRIDGE_AMD_AMDFAM10
        select SOUTHBRIDGE_AMD_RS780
        select SOUTHBRIDGE_AMD_SB700
  • select expert in make menuconfig and remove the microcode loading
  • make


Known issues