Document Gigabyte GA-G41M-ES2L

To replace wiki page https://www.coreboot.org/Board:gigabyte/ga-g41m-es2l

+ configs/config.gigabyte_ga-g41m-es2l
+ lshw output examples
+ memory modules compatibility

Tested in Devuan 4 Chimaera.
Tested from exact steps from this documentation.

Change-Id: Ib45cfea15b43d7399e9d209f7ba7c6b24fe860dd
Signed-off-by: Alexey Vazhnov <vazhnov@boot-keys.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50368
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Evgeny Zinoviev <me@ch1p.io>

5 files changed, 907 insertions, 0 deletions

diff --git a/Documentation/mainboard/gigabyte/ga-g41m-es2l.md b/Documentation/mainboard/gigabyte/ga-g41m-es2l.md
new file mode 100644
index 0000000000..6c17f4cc3f
--- /dev/null
+++ b/Documentation/mainboard/gigabyte/ga-g41m-es2l.md
@@ -0,0 +1,283 @@
+# Gigabyte GA-G41M-ES2L rev 1.1
+
+This page describes how to use coreboot on the [Gigabyte GA-G41M-ES2L rev 1.1](https://www.gigabyte.com/Motherboard/GA-G41M-ES2L-rev-11) mainboard.
+
+This motherboard [also works with Libreboot](https://libreboot.org/docs/install/ga-g41m-es2l.html).
+
+## Technology
+
+```eval_rst
++------------------+--------------------------------------------------+
+| Type             | Value                                            |
++==================+==================================================+
+| BIOS flash chips | 2 x SST25VF080B (8 Mbit SPI) (DUAL BIOS)         |
++------------------+--------------------------------------------------+
+| Northbridge      | Intel G41                                        |
++------------------+--------------------------------------------------+
+| Southbridge      | Intel ICH7                                       |
++------------------+--------------------------------------------------+
+| CPU socket       | LGA775                                           |
++------------------+--------------------------------------------------+
+| RAM              | 2 x DDR2 800, max. 8 GiB                         |
++------------------+--------------------------------------------------+
+| SuperIO          | ITE IT8718F-S                                    |
++------------------+--------------------------------------------------+
+| Audio            | Realtek ALC888B                                  |
++------------------+--------------------------------------------------+
+| Network          | Realtek RTL8111C PCIe Gigabit Ethernet           |
++------------------+--------------------------------------------------+
+```
+
+## Preparation
+
+```eval_rst
+For more datails how to get sources and build the toolchain, see :doc:`../../tutorial/part1`.
+```
+
+### Devuan 4 Chimaera
+
+This probably works also for any fresh Debian/Ubuntu-based distros.
+
+Install tools and libraries needed for coreboot:
+
+```shell
+sudo apt-get -V install bison build-essential curl flex git gnat libncurses5-dev m4 zlib1g-dev wget python2 python-is-python2 flashrom
+```
+
+### Get sources
+
+You need about 700 MB disk space for sources only and ~2GB disk space for sources + build results
+
+```shell
+git clone --recursive https://review.coreboot.org/coreboot.git
+```
+
+### Build toolchain
+
+Your system compilers can be different with versions, tested by coreboot developers.
+So, it is recommended to build cross-compilers with special versions, which were tested with coreboot.
+
+It is possible to skip this time-consuming part and use `ANY_TOOLCHAIN=y`, but this not recommended.
+
+You can build them for all platforms: `make crossgcc CPUS=2` but this takes ~2 hours with Intel core2duo E8400.
+
+The best way, probably, is to build cross-compilers for your platform (this takes ~20 minutes with Intel core2duo E8400):
+
+```shell
+make crossgcc-i386 CPUS=2
+```
+
+### Save MAC-address of internal LAN
+
+Run `ip -c link show`, you will find MAC-address like 6c:f0:49:xx:xx:xx
+
+```
+1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
+    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000
+    link/ether 6c:f0:49:xx:xx:xx brd ff:ff:ff:ff:ff:ff
+```
+
+## Configure
+
+Create file `payloads/external/SeaBIOS/.config_seabios`:
+
+```shell
+CONFIG_COREBOOT=y
+CONFIG_ATA_DMA=y
+CONFIG_VGA_COREBOOT=y
+```
+
+Edit file `configs/config.gigabyte_ga-g41m-es2l`, replace `CONFIG_REALTEK_8168_MACADDRESS` value with your MAC-address.
+
+Run
+
+```shell
+make defconfig KBUILD_DEFCONFIG="configs/config.gigabyte_ga-g41m-es2l"
+```
+
+## Build
+
+Just execute:
+
+```shell
+make
+```
+
+It takes ~2 minutes with Intel core2duo E8400.
+
+Example of last part in the output:
+
+```
+    CBFSPRINT  coreboot.rom
+
+FMAP REGION: COREBOOT
+Name                           Offset     Type           Size   Comp
+cbfs master header             0x0        cbfs header        32 none
+fallback/romstage              0x80       stage           62316 none
+cpu_microcode_blob.bin         0xf480     microcode      180224 none
+fallback/ramstage              0x3b500    stage           98745 none
+vgaroms/seavgabios.bin         0x53700    raw             28672 none
+config                         0x5a740    raw               301 none
+revision                       0x5a8c0    raw               675 none
+build_info                     0x5abc0    raw               103 none
+fallback/dsdt.aml              0x5ac80    raw              8447 none
+rt8168-macaddress              0x5cdc0    raw                17 none
+vbt.bin                        0x5ce40    raw               802 LZMA (1899 decompressed)
+cmos.default                   0x5d1c0    cmos_default      256 none
+cmos_layout.bin                0x5d300    cmos_layout      1040 none
+fallback/postcar               0x5d740    stage           20844 none
+fallback/payload               0x62900    simple elf      70270 none
+payload_config                 0x73bc0    raw              1699 none
+payload_revision               0x742c0    raw               237 none
+(empty)                        0x74400    null           482904 none
+bootblock                      0xea280    bootblock       23360 none
+    HOSTCC     cbfstool/ifwitool.o
+    HOSTCC     cbfstool/ifwitool (link)
+
+Built gigabyte/ga-g41m-es2l (GA-G41M-ES2L)
+```
+
+## Flashing coreboot
+
+```eval_rst
+In addition to the information here, please see the
+:doc:`../../flash_tutorial/index`.
+```
+
+### Do backup
+
+The above commands read the SPI flash chip(s), write into file and then verify content again with the chip:
+
+```shell
+sudo flashrom -p internal:dualbiosindex=0 -r m_bios.rom
+sudo flashrom -p internal:dualbiosindex=0 -v m_bios.rom
+sudo flashrom -p internal:dualbiosindex=1 -r b_bios.rom
+sudo flashrom -p internal:dualbiosindex=1 -v b_bios.rom
+```
+
+If access error appeared, then add `iomem=relaxed` to Linux kernel parameters and restart your Linux system.
+
+You can also repeat backup and compare checksums manually.
+
+Backup file should be stored elsewhere, so that in case the coreboot build is faulty, some external procedure can be used without having to extract the backup from the target device first.
+
+### Write new flash image
+
+Let's write new image into SPI flash chip, verify checksum again and erase second flash chip:
+
+```shell
+sudo flashrom -p internal:dualbiosindex=0 -w build/coreboot.rom
+sudo flashrom -p internal:dualbiosindex=0 -v build/coreboot.rom
+sudo flashrom -p internal:dualbiosindex=1 -E
+```
+
+## Set text mode for GRUB
+
+Update your `/etc/default/grub` with:
+
+```shell
+GRUB_TERMINAL=console
+```
+
+And recreate GRUB configuration `/boot/grub/grub.cfg` by command
+
+```shell
+sudo update-grub
+```
+
+## Boot with new firmware
+
+Restart your system:
+
+```shell
+sudo shutdown -r now
+```
+
+If it is needed, use <kbd>Esc</kbd> key to choose boot device.
+
+Remove `iomem=relaxed` from Linux kernel parameters.
+
+Enjoy!
+
+## Status
+
+```
++-----------------------+--------------------------+--------+-------------------------------+
+| coreboot version      | Date of sources checkout | Status | Comment                       |
++-----------------------+--------------------------+--------+-------------------------------+
+| 4.13-1531-g2fae1c0494 | 2021-01-28               | Good   |                               |
++-----------------------+--------------------------+--------+-------------------------------+
+| 4.13-2182-g6410a0002f | 2021-02-18               | Good   |                               |
++-----------------------+--------------------------+--------+-------------------------------+
+```
+
+### Known issues
+
+Lm-sensors shows wrong values from it87:
+
+```
+coretemp-isa-0000
+Adapter: ISA adapter
+Core 0:       +27.0°C  (high = +80.0°C, crit = +100.0°C)
+Core 1:       +31.0°C  (high = +80.0°C, crit = +100.0°C)
+
+it8718-isa-0290
+Adapter: ISA adapter
+in0:           1.06 V  (min =  +0.00 V, max =  +4.08 V)
+in1:           1.90 V  (min =  +0.00 V, max =  +4.08 V)
+in2:           3.34 V  (min =  +0.00 V, max =  +4.08 V)
++5V:           2.96 V  (min =  +0.00 V, max =  +4.08 V)
+in4:         224.00 mV (min =  +0.00 V, max =  +4.08 V)
+in5:           4.08 V  (min =  +0.00 V, max =  +4.08 V)  ALARM
+in6:           4.08 V  (min =  +0.00 V, max =  +4.08 V)  ALARM
+in7:           3.09 V  (min =  +0.00 V, max =  +4.08 V)
+Vbat:          2.82 V
+fan1:        1290 RPM  (min =    0 RPM)
+fan2:           0 RPM  (min =    0 RPM)
+temp1:        -54.0°C  (low  =  +0.0°C, high = +127.0°C)  sensor = thermistor
+temp2:         -1.0°C  (low  =  +0.0°C, high = +127.0°C)  sensor = thermistor
+temp3:        +44.0°C  (low  =  +0.0°C, high = +127.0°C)  sensor = thermal diode
+cpu0_vid:    +1.100 V
+intrusion0:  ALARM
+```
+
+### Working
+
+- RAM 1,2x1GiB DDR2 PC2-6400 Kingston KTC1G-UDIMM (1.8V, 2Rx8 ?)
+- RAM 1x1GiB DDR2 PC2-5300 Brooktree AU1G08E32-667P005 / Apogee AU1G082-667P005 CL6 (1.8V, 2Rx8 ?)
+- CPU E8400
+- ACPI
+- CPU frequency scaling
+- flashrom under coreboot
+- Gigabit Ethernet
+- Hardware monitoring
+- Integrated graphics
+- SATA
+- PCI POST card
+
+### Not working
+
+- SuperIO based fan control: PWM fan speed is not changing in depend of CPU temperature
+- RAM 1,2x4GiB DDR2 PC2-6400 Samsung M378T5263AZ3-CF7 (2Rx4 PC2-6400U-666-12-E3)
+
+### Not tested
+
+- KVM virtualization
+- Onboard audio
+- PCI
+- PCIe
+- PS/2 keyboard mouse (during payload, bootloader)
+- Serial port
+- USB (disabling XHCI controller makes to work as fallback USB2.0 ports)
+- IOMMU
+
+## Interesting facts
+
+`lshw` output is different for BIOS and coreboot.
+
+```shell
+diff --side-by-side --ignore-all-space --strip-trailing-cr \
+     Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_before_coreboot.txt \
+     Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_after_coreboot.txt
+```
diff --git a/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_after_coreboot.txt b/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_after_coreboot.txt
new file mode 100644
index 0000000000..971994e057
--- /dev/null
+++ b/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_after_coreboot.txt
@@ -0,0 +1,306 @@
+my-desktop
+    description: Desktop Computer
+    product: GA-G41M-ES2L
+    vendor: GIGABYTE
+    version: 1.0
+    serial: 123456789
+    width: 64 bits
+    capabilities: smbios-3.0.0 dmi-3.0.0 smp vsyscall32
+    configuration: boot=normal chassis=desktop
+  *-core
+       description: Motherboard
+       product: GA-G41M-ES2L
+       vendor: GIGABYTE
+       physical id: 0
+       version: 1.0
+       serial: 123456789
+     *-firmware
+          description: BIOS
+          vendor: coreboot
+          physical id: 0
+          version: 4.13-1531-g2fae1c0494
+          date: 01/29/2021
+          size: 1MiB
+          capacity: 1MiB
+          capabilities: pci pcmcia upgrade bootselect acpi
+     *-cpu
+          description: CPU
+          product: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
+          vendor: Intel Corp.
+          physical id: 4
+          bus info: cpu@0
+          version: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
+          slot: CPU0
+          size: 2943MHz
+          capacity: 3GHz
+          width: 64 bits
+          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm pti tpr_shadow vnmi flexpriority vpid dtherm cpufreq
+        *-cache
+             description: L2 cache
+             physical id: 7
+             slot: CACHE2
+             size: 6MiB
+             capacity: 6MiB
+             capabilities: internal unified
+             configuration: level=2
+     *-memory
+          description: System memory
+          physical id: 1
+          size: 2GiB
+     *-pci
+          description: Host bridge
+          product: 4 Series Chipset DRAM Controller
+          vendor: Intel Corporation
+          physical id: 100
+          bus info: pci@0000:00:00.0
+          version: 03
+          width: 32 bits
+          clock: 33MHz
+        *-pci:0
+             description: PCI bridge
+             product: 4 Series Chipset PCI Express Root Port
+             vendor: Intel Corporation
+             physical id: 1
+             bus info: pci@0000:00:01.0
+             version: 03
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
+             configuration: driver=pcieport
+             resources: irq:24
+        *-display:0
+             description: VGA compatible controller
+             product: 4 Series Chipset Integrated Graphics Controller
+             vendor: Intel Corporation
+             physical id: 2
+             bus info: pci@0000:00:02.0
+             version: 03
+             width: 64 bits
+             clock: 33MHz
+             capabilities: msi pm vga_controller bus_master cap_list rom
+             configuration: driver=i915 latency=0
+             resources: irq:16 memory:90000000-903fffff memory:80000000-8fffffff ioport:20a0(size=8) memory:c0000-dffff
+        *-display:1 UNCLAIMED
+             description: Display controller
+             product: 4 Series Chipset Integrated Graphics Controller
+             vendor: Intel Corporation
+             physical id: 2.1
+             bus info: pci@0000:00:02.1
+             version: 03
+             width: 64 bits
+             clock: 33MHz
+             capabilities: pm cap_list
+             configuration: latency=0
+             resources: memory:90400000-904fffff
+        *-multimedia
+             description: Audio device
+             product: NM10/ICH7 Family High Definition Audio Controller
+             vendor: Intel Corporation
+             physical id: 1b
+             bus info: pci@0000:00:1b.0
+             version: 01
+             width: 64 bits
+             clock: 33MHz
+             capabilities: pm msi pciexpress bus_master cap_list
+             configuration: driver=snd_hda_intel latency=0
+             resources: irq:28 memory:90700000-90703fff
+        *-pci:1
+             description: PCI bridge
+             product: NM10/ICH7 Family PCI Express Port 1
+             vendor: Intel Corporation
+             physical id: 1c
+             bus info: pci@0000:00:1c.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
+             configuration: driver=pcieport
+             resources: irq:25
+        *-pci:2
+             description: PCI bridge
+             product: NM10/ICH7 Family PCI Express Port 2
+             vendor: Intel Corporation
+             physical id: 1c.1
+             bus info: pci@0000:00:1c.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
+             configuration: driver=pcieport
+             resources: irq:26 ioport:1000(size=4096) memory:90600000-906fffff ioport:90500000(size=1048576)
+           *-network
+                description: Ethernet interface
+                product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
+                vendor: Realtek Semiconductor Co., Ltd.
+                physical id: 0
+                bus info: pci@0000:03:00.0
+                logical name: eth0
+                version: 02
+                serial: 6c:f0:49:a3:e3:d5
+                size: 1Gbit/s
+                capacity: 1Gbit/s
+                width: 64 bits
+                clock: 33MHz
+                capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
+                configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.10.0-2-amd64 duplex=full ip=192.168.155.136 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
+                resources: irq:17 ioport:1000(size=256) memory:90510000-90510fff memory:90500000-9050ffff memory:90600000-9060ffff
+        *-usb:0
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #1
+             vendor: Intel Corporation
+             physical id: 1d
+             bus info: pci@0000:00:1d.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:23 ioport:2000(size=32)
+        *-usb:1
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #2
+             vendor: Intel Corporation
+             physical id: 1d.1
+             bus info: pci@0000:00:1d.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:19 ioport:2020(size=32)
+        *-usb:2
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #3
+             vendor: Intel Corporation
+             physical id: 1d.2
+             bus info: pci@0000:00:1d.2
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:18 ioport:2040(size=32)
+        *-usb:3
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #4
+             vendor: Intel Corporation
+             physical id: 1d.3
+             bus info: pci@0000:00:1d.3
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:16 ioport:2060(size=32)
+        *-usb:4
+             description: USB controller
+             product: NM10/ICH7 Family USB2 EHCI Controller
+             vendor: Intel Corporation
+             physical id: 1d.7
+             bus info: pci@0000:00:1d.7
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pm debug ehci bus_master cap_list
+             configuration: driver=ehci-pci latency=0
+             resources: irq:23 memory:90704000-907043ff
+        *-pci:3
+             description: PCI bridge
+             product: 82801 PCI Bridge
+             vendor: Intel Corporation
+             physical id: 1e
+             bus info: pci@0000:00:1e.0
+             version: e1
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci subtractive_decode bus_master cap_list
+        *-isa
+             description: ISA bridge
+             product: 82801GB/GR (ICH7 Family) LPC Interface Bridge
+             vendor: Intel Corporation
+             physical id: 1f
+             bus info: pci@0000:00:1f.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: isa bus_master cap_list
+             configuration: driver=lpc_ich latency=0
+             resources: irq:0
+        *-ide:0
+             description: IDE interface
+             product: 82801G (ICH7 Family) IDE Controller
+             vendor: Intel Corporation
+             physical id: 1f.1
+             bus info: pci@0000:00:1f.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: ide isa_compat_mode pci_native_mode bus_master
+             configuration: driver=ata_piix latency=0
+             resources: irq:18 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:2080(size=16)
+        *-ide:1
+             description: IDE interface
+             product: NM10/ICH7 Family SATA Controller [IDE mode]
+             vendor: Intel Corporation
+             physical id: 1f.2
+             bus info: pci@0000:00:1f.2
+             logical name: scsi2
+             version: 01
+             width: 32 bits
+             clock: 66MHz
+             capabilities: ide pm isa_compat_mode pci_native_mode bus_master cap_list emulated
+             configuration: driver=ata_piix latency=0
+             resources: irq:19 ioport:20b8(size=8) ioport:20d0(size=4) ioport:20c0(size=8) ioport:20d4(size=4) ioport:2090(size=16)
+           *-disk
+                description: ATA Disk
+                product: WDC WD5000BPVT-2
+                vendor: Western Digital
+                physical id: 0.0.0
+                bus info: scsi@2:0.0.0
+                logical name: /dev/sda
+                version: 1A03
+                serial: WD-WXD1E71MYND4
+                size: 465GiB (500GB)
+                capabilities: gpt-1.00 partitioned partitioned:gpt
+                configuration: ansiversion=5 guid=868a1c85-f309-4f3d-8282-6b5c4c373275 logicalsectorsize=512 sectorsize=4096
+        *-serial
+             description: SMBus
+             product: NM10/ICH7 Family SMBus Controller
+             vendor: Intel Corporation
+             physical id: 1f.3
+             bus info: pci@0000:00:1f.3
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             configuration: driver=i801_smbus latency=0
+             resources: irq:19 ioport:400(size=32)
+     *-pnp00:00
+          product: PnP device PNP0c02
+          physical id: 2
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:01
+          product: PnP device PNP0103
+          physical id: 3
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:02
+          product: PnP device PNP0c02
+          physical id: 5
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:03
+          product: PnP device PNP0b00
+          physical id: 6
+          capabilities: pnp
+          configuration: driver=rtc_cmos
+     *-pnp00:04
+          product: PnP device PNP0303
+          physical id: 7
+          capabilities: pnp
+          configuration: driver=i8042 kbd
+     *-pnp00:05
+          product: PnP device PNP0f13
+          physical id: 8
+          capabilities: pnp
+          configuration: driver=i8042 aux
diff --git a/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_before_coreboot.txt b/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_before_coreboot.txt
new file mode 100644
index 0000000000..068cfdbc4a
--- /dev/null
+++ b/Documentation/mainboard/gigabyte/ga-g41m-es2l_lshw_before_coreboot.txt
@@ -0,0 +1,304 @@
+my-desktop
+    description: Desktop Computer
+    product: G41M-ES2L
+    vendor: Gigabyte Technology Co., Ltd.
+    width: 64 bits
+    capabilities: smbios-2.4 dmi-2.4 smp vsyscall32
+    configuration: boot=normal chassis=desktop uuid=00000000-0000-0000-0000-6CF049A3E3D5
+  *-core
+       description: Motherboard
+       product: G41M-ES2L
+       vendor: Gigabyte Technology Co., Ltd.
+       physical id: 0
+     *-firmware
+          description: BIOS
+          vendor: Award Software International, Inc.
+          physical id: 0
+          version: F9
+          date: 06/21/2010
+          size: 128KiB
+          capacity: 1MiB
+          capabilities: pci pnp apm upgrade shadowing cdboot bootselect edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
+     *-cpu
+          description: CPU
+          product: Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz
+          vendor: Intel Corp.
+          physical id: 4
+          bus info: cpu@0
+          version: Intel(R) Core(TM)2 Duo CPU
+          slot: Socket 775
+          size: 2631MHz
+          capacity: 4GHz
+          width: 64 bits
+          clock: 333MHz
+          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm pti tpr_shadow vnmi flexpriority vpid dtherm cpufreq
+        *-cache:0
+             description: L1 cache
+             physical id: a
+             slot: Internal Cache
+             size: 64KiB
+             capacity: 64KiB
+             capabilities: synchronous internal write-back
+             configuration: level=1
+        *-cache:1
+             description: L2 cache
+             physical id: b
+             slot: External Cache
+             size: 6MiB
+             capabilities: synchronous internal write-back
+             configuration: level=2
+     *-memory
+          description: System Memory
+          physical id: 19
+          slot: System board or motherboard
+          size: 2GiB
+        *-bank:0
+             description: DIMM 800 MHz (1.2 ns)
+             physical id: 0
+             slot: A0
+             size: 1GiB
+             width: 64 bits
+             clock: 800MHz (1.2ns)
+        *-bank:1
+             description: DIMM [empty]
+             physical id: 1
+             slot: A1
+        *-bank:2
+             description: DIMM 800 MHz (1.2 ns)
+             physical id: 2
+             slot: A2
+             size: 1GiB
+             width: 64 bits
+             clock: 800MHz (1.2ns)
+        *-bank:3
+             description: DIMM [empty]
+             physical id: 3
+             slot: A3
+     *-pci
+          description: Host bridge
+          product: 4 Series Chipset DRAM Controller
+          vendor: Intel Corporation
+          physical id: 100
+          bus info: pci@0000:00:00.0
+          version: 03
+          width: 32 bits
+          clock: 33MHz
+        *-display
+             description: VGA compatible controller
+             product: 4 Series Chipset Integrated Graphics Controller
+             vendor: Intel Corporation
+             physical id: 2
+             bus info: pci@0000:00:02.0
+             version: 03
+             width: 64 bits
+             clock: 33MHz
+             capabilities: msi pm vga_controller bus_master cap_list rom
+             configuration: driver=i915 latency=0
+             resources: irq:16 memory:fd800000-fdbfffff memory:d0000000-dfffffff ioport:ff00(size=8) memory:c0000-dffff
+        *-multimedia
+             description: Audio device
+             product: NM10/ICH7 Family High Definition Audio Controller
+             vendor: Intel Corporation
+             physical id: 1b
+             bus info: pci@0000:00:1b.0
+             version: 01
+             width: 64 bits
+             clock: 33MHz
+             capabilities: pm msi pciexpress bus_master cap_list
+             configuration: driver=snd_hda_intel latency=0
+             resources: irq:27 memory:fdff8000-fdffbfff
+        *-pci:0
+             description: PCI bridge
+             product: NM10/ICH7 Family PCI Express Port 1
+             vendor: Intel Corporation
+             physical id: 1c
+             bus info: pci@0000:00:1c.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
+             configuration: driver=pcieport
+             resources: irq:24 ioport:1000(size=4096) memory:7dd00000-7defffff ioport:80000000(size=2097152)
+        *-pci:1
+             description: PCI bridge
+             product: NM10/ICH7 Family PCI Express Port 2
+             vendor: Intel Corporation
+             physical id: 1c.1
+             bus info: pci@0000:00:1c.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
+             configuration: driver=pcieport
+             resources: irq:25 ioport:d000(size=4096) memory:fdd00000-fddfffff ioport:fde00000(size=1048576)
+           *-network
+                description: Ethernet interface
+                product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
+                vendor: Realtek Semiconductor Co., Ltd.
+                physical id: 0
+                bus info: pci@0000:02:00.0
+                logical name: eth0
+                version: 02
+                serial: 6c:f0:49:a3:e3:d5
+                size: 1Gbit/s
+                capacity: 1Gbit/s
+                width: 64 bits
+                clock: 33MHz
+                capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
+                configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.10.0-2-amd64 duplex=full ip=192.168.155.137 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
+                resources: irq:17 ioport:de00(size=256) memory:fdeff000-fdefffff memory:fdee0000-fdeeffff memory:fdd00000-fdd0ffff
+        *-usb:0
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #1
+             vendor: Intel Corporation
+             physical id: 1d
+             bus info: pci@0000:00:1d.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:23 ioport:fe00(size=32)
+        *-usb:1
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #2
+             vendor: Intel Corporation
+             physical id: 1d.1
+             bus info: pci@0000:00:1d.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:19 ioport:fd00(size=32)
+        *-usb:2
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #3
+             vendor: Intel Corporation
+             physical id: 1d.2
+             bus info: pci@0000:00:1d.2
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:18 ioport:fc00(size=32)
+        *-usb:3
+             description: USB controller
+             product: NM10/ICH7 Family USB UHCI Controller #4
+             vendor: Intel Corporation
+             physical id: 1d.3
+             bus info: pci@0000:00:1d.3
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: uhci bus_master
+             configuration: driver=uhci_hcd latency=0
+             resources: irq:16 ioport:fb00(size=32)
+        *-usb:4
+             description: USB controller
+             product: NM10/ICH7 Family USB2 EHCI Controller
+             vendor: Intel Corporation
+             physical id: 1d.7
+             bus info: pci@0000:00:1d.7
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pm ehci bus_master cap_list
+             configuration: driver=ehci-pci latency=0
+             resources: irq:23 memory:fdfff000-fdfff3ff
+        *-pci:2
+             description: PCI bridge
+             product: 82801 PCI Bridge
+             vendor: Intel Corporation
+             physical id: 1e
+             bus info: pci@0000:00:1e.0
+             version: e1
+             width: 32 bits
+             clock: 33MHz
+             capabilities: pci subtractive_decode cap_list
+        *-isa
+             description: ISA bridge
+             product: 82801GB/GR (ICH7 Family) LPC Interface Bridge
+             vendor: Intel Corporation
+             physical id: 1f
+             bus info: pci@0000:00:1f.0
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: isa bus_master cap_list
+             configuration: driver=lpc_ich latency=0
+             resources: irq:0
+        *-ide:0
+             description: IDE interface
+             product: 82801G (ICH7 Family) IDE Controller
+             vendor: Intel Corporation
+             physical id: 1f.1
+             bus info: pci@0000:00:1f.1
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             capabilities: ide isa_compat_mode pci_native_mode bus_master
+             configuration: driver=ata_piix latency=0
+             resources: irq:18 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:f800(size=16)
+        *-ide:1
+             description: IDE interface
+             product: NM10/ICH7 Family SATA Controller [IDE mode]
+             vendor: Intel Corporation
+             physical id: 1f.2
+             bus info: pci@0000:00:1f.2
+             logical name: scsi2
+             version: 01
+             width: 32 bits
+             clock: 66MHz
+             capabilities: ide pm isa_compat_mode pci_native_mode bus_master cap_list emulated
+             configuration: driver=ata_piix latency=0
+             resources: irq:19 ioport:f700(size=8) ioport:f600(size=4) ioport:f500(size=8) ioport:f400(size=4) ioport:f300(size=16)
+           *-disk
+                description: ATA Disk
+                product: WDC WD5000BPVT-2
+                vendor: Western Digital
+                physical id: 0.0.0
+                bus info: scsi@2:0.0.0
+                logical name: /dev/sda
+                version: 1A03
+                serial: WD-WXD1E71MYND4
+                size: 465GiB (500GB)
+                capabilities: gpt-1.00 partitioned partitioned:gpt
+                configuration: ansiversion=5 guid=868a1c85-f309-4f3d-8282-6b5c4c373275 logicalsectorsize=512 sectorsize=4096
+        *-serial
+             description: SMBus
+             product: NM10/ICH7 Family SMBus Controller
+             vendor: Intel Corporation
+             physical id: 1f.3
+             bus info: pci@0000:00:1f.3
+             version: 01
+             width: 32 bits
+             clock: 33MHz
+             configuration: driver=i801_smbus latency=0
+             resources: irq:19 ioport:500(size=32)
+     *-pnp00:00
+          product: PnP device PNP0c02
+          physical id: 1
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:01
+          product: PnP device PNP0b00
+          physical id: 2
+          capabilities: pnp
+          configuration: driver=rtc_cmos
+     *-pnp00:02
+          product: PnP device PNP0c02
+          physical id: 3
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:03
+          product: PnP device PNP0c02
+          physical id: 5
+          capabilities: pnp
+          configuration: driver=system
+     *-pnp00:04
+          product: PnP device PNP0c01
+          physical id: 6
+          capabilities: pnp
+          configuration: driver=system
diff --git a/Documentation/mainboard/index.md b/Documentation/mainboard/index.md
index 3260f73484..3f849fc5e4 100644
--- a/Documentation/mainboard/index.md
+++ b/Documentation/mainboard/index.md
@@ -56,6 +56,7 @@ The boards in this section are not real mainboards, but emulators.
 
 ## Gigabyte
 
+- [GA-G41M-ES2L](gigabyte/ga-g41m-es2l.md)
 - [GA-H61M-S2PV](gigabyte/ga-h61m-s2pv.md)
 
 ## HP
diff --git a/configs/config.gigabyte_ga-g41m-es2l b/configs/config.gigabyte_ga-g41m-es2l
new file mode 100644
index 0000000000..4cc00a2916
--- /dev/null
+++ b/configs/config.gigabyte_ga-g41m-es2l
@@ -0,0 +1,13 @@
+CONFIG_VENDOR_GIGABYTE=y
+CONFIG_BOARD_GIGABYTE_GA_G41M_ES2L=y
+CONFIG_MAINBOARD_VERSION="1.1"
+CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT=y
+CONFIG_ONBOARD_VGA_IS_PRIMARY=y
+CONFIG_PAYLOAD_CONFIGFILE=".config_seabios"
+CONFIG_USE_OPTION_TABLE=y
+CONFIG_USE_BLOBS=y
+CONFIG_CPU_MICROCODE_CBFS_GENERATE=y
+
+# It is better to take this unique value from old CMOS.
+# Default MAC-address is 00:e0:4c:00:c0:b0
+# CONFIG_REALTEK_8168_MACADDRESS="6c:f0:49:xx:xx:xx"