ADLINK AmITX-SL-G Mini ITX Motherboard Deployment and SEMA Guide

4. Watchdog Timer (Type II)

The timeout value (in seconds or minutes) can be set through SEMA API or BIOS.

Automatically trigger system reset after timeout.

Support Power Up Watchdog, which can be temporarily disabled during startup by pressing F12.

5. Dual BIOS fault recovery

BMC monitors the BIOS boot process. If the main BIOS fails to start, the hardware signal will automatically switch to Fail safe BIOS startup to ensure system recovery.

Users can manually select the boot BIOS and mode through SW2.

6. Exception Codes

BMC outputs error codes by flashing the blue status LED and records them in the BMC Flags register. Partial key code:

Explanation of Code Error Messages

0 NOERROR is normal

2 NOSUSCLK SUSCLK signal missing

3 NOSLP_S5 SLP_S5 signal missing

4 NOSLP_S4 SLP_S4 signal missing

5 NOSLP_S3 SLP_S3 signal missing

7 BIOs_FAIL BIOS startup failure

8 RESET_SAIL reset failed

10 CRITICAL_TEMP temperature critical

11 POWER_SAIL power failure

12 VOLTAGE-FAIL voltage abnormality

18 NOVCORE. PG CPU core power supply good signal missing

7. User flash storage area

Provide a 1kB read-write Flash area (customer data).

Provide a 128 byte protected Flash area (write protected, clear protected), suitable for storing keys, IDs, and other information.

Core points of BIOS settings

BIOS is based on AMI EFI, press<Del>to enter when booting up. Main menus and key settings:

1. Main Menu

System information: project version, BIOS build date.

Processor information: model, frequency, number of cores, GT speed, IGFX VBIOS version, total memory.

PCH information: chipset name, SKU, stepping, ME firmware version.

System Management (SEMA): includes board information, temperature/fan speed, power consumption monitoring (VCORE/VGFX/VMEM/3.3V/5V/12V, etc.), runtime statistics (total runtime, startup times, startup reasons), BMC Flags, Power Up watchdog settings, LVDS backlight brightness adjustment, Smart Fan temperature control configuration (4 trigger points), SPI ROM write protection.

2. Advanced

CPU configuration: Virtualization (VT-x/VT-d), Speed Shift, SpeedStep, Turbo Mode can be enabled/disabled, and Active Processor Cores can be set.

Audio: HD Audio enabled/disabled/automatic, PME enabled, select audio output device (audio pin/rear/7.1 channels).

SATA: Enable/disable controller, mode (IDE/AHCI/RAID), speed (Gen1/Gen2/Gen3), RAID 0/1/10/5 independently enabled.

Thermal management: DTS SMM mode, Critical/Active/Passive Cooling Trip Point, ACPI passive cooling parameters (TC1/TC2/TSP).

Memory: Memory frequency, timing (tCL tRCD tRP tRAS), TOLUD settings MRC Fast Boot、Memory Remap。

graphical: Primary Display（Auto/IGFX/PEG/PCIe），Internal Graphics，GTT/Aperture/DVMT  Video memory allocation, LVDS backlight mode (PCH/BMC control), LCD Panel Type (supporting 20+pre-defined resolutions), Panel Scaling, LVDS data format/polarity/output mode.

USB: Legacy USB support, XHCI Hand off, USB Mass Storage driver, port disable overwrite.

ACPI Power Management: ACPI Auto Configuration, Hibernation, ACPI Sleep State (S3), AT/ATX simulation.

PCI/PCIe: PEG port configuration (enabled/disabled, Max Link Speed, Slot Power Limit), PCIe Root Port 6-9 configuration (ASPM, hot swappable, speed).

Super IO: Enable/disable SER1~SER4 and address/IRQ settings.

Serial console redirection: Each COM port is independently enabled, terminal type (VT100/VT-UTF8/ANSI), baud rate (9600~115200), flow control (None/Hardware RTS/CTS), VT-UTF8 combination key support.

Network: Network Stack, PCH LAN i219LM/i211 controller, Wake on LAN, AMT configuration (MEBx hotkeys, selection screen,...) USB Provisioning、 Watchdog timer, etc.).

Security: Intel TXT (LT) support, RTC Lock, BIOS Lock, Trusted Computing (TPM 1.2/2.0 selection and status).

3. Security

Administrator/user password settings.

Secure Boot control (requires disabling CSM and registering PK).

4. Boot

Set waiting time, NumLock status, Quiet/Fast Boot, CSM configuration (UEFI/Legacy boot filtering, Option ROM execution strategy).

Start device priority.

5. Save&Exit

Save changes and exit, discard changes, restore default values, user default values, start EFI Shell, etc.

System resource allocation reference

1. System memory mapping

0~1MB: DOS compatible area (including video buffer and PCI extension ROM).

1MB~15MB: Main memory.

15MB~16MB: ISA cavity.

FEC00000~FECFFFFF: APIC configuration space.

FEE00000~FEEFFFFF: MSI interrupt space.

FFE00000~FFFFFF: High BIOS area.

2. I/O mapping key addresses

Serial port: COM1=3F8h（IRQ4），COM2=2F8h（IRQ3），COM3=3E8h（IRQ5），COM4=2E8h（IRQ7）。

Super I/O：02E-02Fh。

VGA：3B0-3BBh、3C0-3DFh。

PCI configuration space: CF8~CFB (address registers), CFCs~CFF (data registers).

3. IRQ allocation (APIC mode)

Typical IRQs 3/4/5/7 are assigned to COM2/COM1/COM3/COM4 respectively, and can be reused by PCI devices (when onboard devices are disabled).

IRQ 16~23 is assigned to HD Audio, xHCI, ME, network cards, PCIe root ports, etc.

4. PCI configuration space

Bus 0: Host Bridge, PEG port IGD、xHCI、ME、AHCI、PCIe Root Ports（1/6/7/8/9）、ISA Bridge、SMBus、i219  network card.

Bus 1 (or device dependent): i211AT network card.

5. SMBus from device address

DIMM A：A0h

DIMM B：A4h

BMC（SEMA）：50h

Extended GPIO: 40h