Difference between revisions of "Board:gigabyte/ga-g41m-es2l"

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Navigate to '''Devices''' and make sure that ''Use native graphics initialization'' is ''enabled'' [*].
Navigate to '''Devices''' and make sure that ''Use native graphics initialization'' is ''enabled'' [*].
Navigate to '''VGA ROM''' and make sure that ''VGA Hardware Type'' is set to ''coreboot linear framebuffer''.


Navigate to '''Generic Drivers''' and set your ethernet MAC address in ''Realtek rt8168 mac address''.
Navigate to '''Generic Drivers''' and set your ethernet MAC address in ''Realtek rt8168 mac address''.

Revision as of 22:12, 21 February 2017

This page describes how to use coreboot on the Gigabyte ga-g41m-es2l mainboard.

SeaBIOS ATA DMA

By default, SeaBIOS uses PIO mode for ATA interfaces. On the ICH7 southbridge, this is very slow. Loading a kernel + initramfs can take up to 20 seconds on this board.

When using ATA DMA mode, this bug disappears. This will have to be set explicitly in the SeaBIOS config file, and selected from coreboot's menuconfig.

From the coreboot root directory, go to payloads/external/SeaBIOS/seabios: <syntaxhighlight lang="bash" inline>cd payloads/external/SeaBIOS/seabios/</syntaxhighlight>

Create a file called .config and add these lines to it:

CONFIG_COREBOOT=y
CONFIG_ATA_DMA=y
CONFIG_VGA_COREBOOT=y

Then, create a full .config file by running: <syntaxhighlight lang="bash" inline>make menuconfig</syntaxhighlight>

Navigate to General Features and make sure the Build Target is set to Build for coreboot.

Navigate to Hardware support and make sure that ATA DMA is enabled [*].

Navigate to VGA ROM and make sure that VGA Hardware Type is set to coreboot linear framebuffer.

Exit menuconfig and save the changes.


It is probably easiest to move the .config file to the coreboot root directory, under a different name (e.g. .seabiosconfig), as coreboot already has its own .config file. <syntaxhighlight lang="bash" inline>mv .config ../../../../.seabiosconfig</syntaxhighlight>

Finally return to the coreboot root directory: <syntaxhighlight lang="bash" inline>cd ../../../../</syntaxhighlight>

coreboot configuration

Create a file called .config and add at least these lines to it:

CONFIG_VENDOR_GIGABYTE=y
CONFIG_BOARD_GIGABYTE_GA_G41M_ES2L=y
CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT=y
CONFIG_USE_OPTION_TABLE=y

In case you do not want CPU microcode updates included in your ROM, add this line:

CONFIG_CPU_MICROCODE_CBFS_NONE=y

In case you do want to include CPU microcode updates in your ROM, add these lines:

CONFIG_USE_BLOBS=y
CONFIG_CPU_MICROCODE_CBFS_GENERATE=y

By default, serial debugging output is enabled. It is very useful for debugging, but also slows down the boot process a lot. If you don't need serial debug or have no idea how to use it, disable it:

CONFIG_CONSOLE_SERIAL=n

Then, create a full .config file by running: <syntaxhighlight lang="bash" inline>make menuconfig</syntaxhighlight>

Navigate to General setup and make sure that Use CMOS for configuration values is enabled [*].

Navigate to Mainboard and make sure the Mainboard vendor is set to GIGABYTE and the Mainboard model to GA-G41M-ES2L.

Navigate to Chipset and make sure that Include CPU microcode in CBFS is set to either Generate from tree or Do not include microcode updates.

  • In case you selected Generate from tree, make sure that General setup -> Allow use of binary-only repository is enabled [*].

Navigate to Devices and make sure that Use native graphics initialization is enabled [*].

Navigate to Generic Drivers and set your ethernet MAC address in Realtek rt8168 mac address.

  • You can retrieve your MAC address either from your OS when running the vendor BIOS (with ifconfig -a for instance), or from the white label on the ethernet port.

Navigate to Payload and set your SeaBIOS config file in SeaBIOS config file.

  • This requires a full path. For instance, if your coreboot root directory is in ~/Downloads, set ~/Downloads/coreboot/.seabiosconfig

Exit menuconfig and save the changes.


Now build your ROM: <syntaxhighlight lang="bash" inline>make</syntaxhighlight>

CMOS default values

By default, the VGA shared RAM on this board is set to 64MB, and the power on after fail option is enabled. While this is fine for server use, this is not ideal for desktop or HTPC use.

In order to change CMOS defaults, you will need nvramtool: <syntaxhighlight lang="bash" inline>cd util/nvramtool/ make mv nvramtool ../../nvramtool cd ../../ </syntaxhighlight>

Power on after fail can be disabled by running: <syntaxhighlight lang="bash" inline>./nvramtool -C build/coreboot.rom -w power_on_after_fail=Disable</syntaxhighlight>

The VGA shared RAM can be increased to 128MB or 256MB by running: <syntaxhighlight lang="bash" inline>./nvramtool -C build/coreboot.rom -w gfx_uma_size=256M</syntaxhighlight>

Internal flashing

This board can be flashed from the vendor BIOS with flashrom, which is in the repositories of nearly every GNU/Linux distribution.

It has two chips, which is supported by flashrom's dualbiosindex option.

As coreboot does not support Gigabyte's DualBIOS feature, only the M_BIOS chip has to be flashed. The B_BIOS chip can safely be erased.

To flash the main BIOS chip, run: <syntaxhighlight lang="bash" inline>sudo flashrom -p internal:dualbiosindex=0 -w build/coreboot.rom</syntaxhighlight>

To erase the backup BIOS chip, run: <syntaxhighlight lang="bash" inline>sudo flashrom -p internal:dualbiosindex=1 -E</syntaxhighlight>

External flashing

This board's design causes the 3.3V rail of your flashing device to power up the southbridge, resulting in a huge power drop. This can trigger erase failures or an inability to even read the flash chip.

Removing the CPU when flashing helps a lot. You may still get erase failures, but the chip will likely be written properly.

As stated above: only M_BIOS has to be flashed. B_BIOS can simply be erased. (Or flashed as well, but that won't make a difference.)

Chip pinout

      B_BIOS                     M_BIOS
 _______________
-cs   o      vcc-           -vcc---clk-mosi-
-miso           -           |              |
-            clk-           |              |
-gnd        mosi-           |  o           |
 _______________            -cs--miso---gnd-

Status (as of commit 5360c7ef94)

Device/functionality Status Comments
CPU
CPU works OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK Core 2 Quad up to 1333MHz FSB. Modded LGA771 Xeons included.
L1 cache enabled OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
L2 cache enabled OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
L3 cache enabled OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Multiple CPU support OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Multi-core support OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Hardware virtualization OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
RAM
EDO OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
SDRAM OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
SO-DIMM OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
DDR OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
DDR2 OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK PC2-5300 CAS 5, PC2-6400 CAS 6 and PC2-6400 CAS 5 tested.
DDR3 OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Dual channel support OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
ECC support OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board Hardware
On-board IDE 3.5" OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Untested
On-board IDE 2.5" OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Untested
On-board SATA OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
On-board SCSI OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board USB OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
On-board VGA OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
On-board Ethernet OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK Requires file in CBFS to keep the proper MAC address.
On-board Audio OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
On-board Modem OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board FireWire OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board Smartcard reader OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board CompactFlash OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board PCMCIA OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board Wifi OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board Bluetooth OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
On-board SD card reader OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Add-on slots/cards
ISA add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Audio/Modem-Riser (AMR/CNR) cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Mini-PCI add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Mini-PCI-Express add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Unknown
PCI-X add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
AGP graphics cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI Express x1 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI Express x2 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI Express x4 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI Express x8 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PCI Express x16 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Has problems SDVO/ADD2 cards work fine. External GPUs are not yet supported.
PCI Express x32 add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
HTX add-on cards OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Legacy / Super I/O
Floppy OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Untested
Serial port 1 (COM1) OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Serial port 2 (COM2) OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Parallel port OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Untested
PS/2 keyboard OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
PS/2 mouse OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Untested
Game port OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Infrared OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
PC speaker OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
DiskOnChip OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Input
Trackpoint OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Touchpad OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Fn Hotkeys OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Fingerprint Reader OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Laptop
Docking VGA OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Docking LAN OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Docking USB OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Docking Audio OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Docking Displayport OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Thinklight OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Webcam OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Miscellaneous
Sensors / fan control OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK Fan speed seems fixed. In practice, this is not a problem.
Hardware watchdog OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Unknown
SMBus OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
CAN bus OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
CPU frequency scaling OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Other powersaving features OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
ACPI OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Reboot OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Poweroff OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Suspend OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Nonstandard LEDs OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
High precision event timers (HPET) OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Random number generator (RNG) OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Wake on modem ring OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | N/A
Wake on LAN OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK
Wake on keyboard OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Unknown
Wake on mouse OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Unknown
TPM OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | Unknown
Flashrom OK=lime | TODO=red | No=red | WIP=orange | Untested=yellow | N/A=lightgray | yellow }}" | OK Can be flashed from vendor BIOS, with -p internal:dualbiosindex=0/1. Chip 1 can safely be erased with -E.