199 lines
7.7 KiB
Markdown
199 lines
7.7 KiB
Markdown
# ASUS F2A85-M
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This page describes how to run coreboot on the [ASUS F2A85-M].
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## Variants
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- ASUS F2A85-M - Working
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- ASUS F2A85-M LE - Working
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- ASUS F2A85-M PRO - Working
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- ASUS F2A85-M2 - Working
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- ASUS F2A85-M/CSM - Unsure if WIP.
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## Technology
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Both "Trinity" and "Richland" desktop processing units are working,
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the CPU architecture in these CPUs/APUs is [Piledriver],
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and their GPU is [TeraScale 3] (VLIW4-based).
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```eval_rst
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+------------------+--------------------------------------------------+
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| F2A85-M | |
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+------------------+--------------------------------------------------+
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| DDR voltage IC | Nuvoton NCT3933U (AUX SMBUS 0x15) |
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+------------------+--------------------------------------------------+
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| Network | Realtek RTL8111F |
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+------------------+--------------------------------------------------+
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| Northbridge | Integrated into CPU with IMC and GPU (APUs only) |
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+------------------+--------------------------------------------------+
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| Southbridge | Hudson-D4 |
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+------------------+--------------------------------------------------+
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| Sound IC | Realtek ALC887 |
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+------------------+--------------------------------------------------+
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| Super I/O | ITE 8603E |
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+------------------+--------------------------------------------------+
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| VRM controller | DIGI VRM ASP1106 (Rebranded RT8894A - SMBUS 0x20)|
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+------------------+--------------------------------------------------+
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```
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```eval_rst
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+------------------+--------------------------------------------------+
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| F2A85-M LE | |
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+------------------+--------------------------------------------------+
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| DDR voltage IC | Nuvoton NCT3933U (AUX SMBUS 0x15 - unconfirmed) |
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+------------------+--------------------------------------------------+
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| Network | Realtek RTL8111F |
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+------------------+--------------------------------------------------+
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| Northbridge | Integrated into CPU with IMC and GPU(APUs only) |
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+------------------+--------------------------------------------------+
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| Southbridge | Hudson-D4 |
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+------------------+--------------------------------------------------+
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| Sound IC | Realtek ALC887 |
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+------------------+--------------------------------------------------+
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| Super I/O | ITE 8623E |
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+------------------+--------------------------------------------------+
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| VRM controller | DIGI VRM ASP1106 (Rebranded RT8894A - SMBUS 0x20)|
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+------------------+--------------------------------------------------+
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```
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```eval_rst
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+------------------+--------------------------------------------------+
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| F2A85-M PRO | |
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+------------------+--------------------------------------------------+
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| DDR voltage IC | Nuvoton NCT3933U (?) |
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+------------------+--------------------------------------------------+
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| Network | Realtek RTL8111F - Not working |
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+------------------+--------------------------------------------------+
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| Northbridge | Integrated into CPU with IMC and GPU(APUs only) |
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+------------------+--------------------------------------------------+
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| Southbridge | Hudson-D4 |
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+------------------+--------------------------------------------------+
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| Sound IC | Realtek ALC887 |
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+------------------+--------------------------------------------------+
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| Super I/O | Nuvoton NCT6779D |
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+------------------+--------------------------------------------------+
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| VRM controller | DIGI VRM ASP1107 |
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+------------------+--------------------------------------------------+
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```
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## Flashing coreboot
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```eval_rst
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+---------------------+------------+
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| Type | Value |
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+=====================+============+
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| Socketed flash | yes |
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+---------------------+------------+
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| Model | W25Q64F |
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+---------------------+------------+
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| Size | 8 MiB |
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+---------------------+------------+
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| Package | DIP-8 |
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+---------------------+------------+
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| Write protection | no |
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+---------------------+------------+
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| Dual BIOS feature | no |
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+---------------------+------------+
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| Internal flashing | yes |
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+---------------------+------------+
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```
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### Internal programming
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The main SPI flash can be accessed using [flashrom].
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UEFI builds that allow flash chip access:
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> v5016 is untested, but expected to work as well
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> v5018
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> v5103
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> v5104
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> v5107
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> v5202
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> v6002
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> v6004
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> v6102
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> v6402
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> v6404 (requires downgrading to v6402 to flash coreboot)
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> v6501 (requires downgrading to v6402 to flash coreboot)
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> v6502 (requires downgrading to v6402 to flash coreboot)
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Build v6502, v6501 and v6404 do not allow access to the flash chip.
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Fortunately it is possible to downgrade build v6502, v6501, v6404 to v6402, with EZFlash.
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Downgrading is done by downloading build v6402 from ASUS' F2A85-M download page
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and copying it to (the root directory of) a FAT32 formatted USB flash drive.
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Enter the EFI setup, switch to advanced mode if necessary,
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open the 'Tool' tab and select "ASUS EZ Flash 2 Utility".
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## Integrated graphics
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### Option 1: Retrieve the VGA optionrom from the vendor EFI binary by running:
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# dd if=/dev/mem of=vgabios.bin bs=1k count=64 skip=768
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### Option 2: Extract from the vendor binary
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Download the BIOS from the Support section at [ASUS F2A85-M].
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Using MMTool Aptio (versions 4.5.0 and 5.0.0):
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- Load image, click on 'Extract tab'
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- Select the 'export path' and 'link present' options
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- Choose option ROM '1002,9900' and click on 'Extract'
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This version is usable for all the GPUs.
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> 1002,9901 Trinity (Radeon HD 7660D)
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> 1002,9904 Trinity (Radeon HD 7560D)
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> 1002,990c Richland (Radeon HD 8670D)
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> 1002,990e Richland (Radeon HD 8570D)
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> 1002,9991 Trinity (Radeon HD 7540D)
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> 1002,9993 Trinity (Radeon HD 7480D)
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> 1002,9996 Richland (Radeon HD 8470D)
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> 1002,9998 Richland (Radeon HD 8370D)
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> 1002,999d Richland (Radeon HD 8550D)
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## Known issues
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- buggy USB 3.0 controller (works fine as 2.0 port)
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- reboot, poweroff, S3 suspend/resume (broken since 4.8.1)
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## Known issues (untested because of non-working ACPI sleep)
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- blink in suspend mode (GP43, program LDN7 F8=23 and blink with F9=2 for 1s blinks)
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- fix immediate resume after suspend (perhaps PCIe STS needs to be cleared)
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- fix resume with USB3.0 used (perhaps there is a bug in resume.c)
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## Untested
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- audio over HDMI
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- IOMMU
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- PS/2 mouse
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## TODOs
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- manage to use one ATOMBIOS for all the integrated GPUs
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## Working
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- ACPI
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- CPU frequency scaling
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- flashrom under coreboot
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- Gigabit Ethernet
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- Hardware monitor
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- Integrated graphics
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- KVM
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- Onboard audio
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- PCIe
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- PS/2 keyboard
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- SATA
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- Serial port
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- SuperIO based fan control
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- USB (XHCI is buggy)
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## Extra resources
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- [Board manual]
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- Flash chip datasheet [W25Q64FV]
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[ASUS F2A85-M]: https://www.asus.com/Motherboards/F2A85M/
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[Board manual]: https://dlcdnets.asus.com/pub/ASUS/mb/SocketFM2/F2A85-M/E8005_F2A85-M.pdf
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[flashrom]: https://flashrom.org/Flashrom
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[Piledriver]: https://en.wikipedia.org/wiki/Piledriver_%28microarchitecture%29#APU_lines
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[TeraScale 3]: https://en.wikipedia.org/wiki/TeraScale_%28microarchitecture%29#TeraScale_3
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[W25Q64FV]: https://www.winbond.com/resource-files/w25q64fv%20revs%2007182017.pdf
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