Balázs Vinarz has uploaded this change for review.
1st version 1:1 copy from old wiki https://www.coreboot.org/Board:asus/f2a85-m
Change-Id: I4d195f4833ba71fdc559815cafb0f5d0d254e897
Signed-off-by: Balazs Vinarz <vinibali1@gmail.com>
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A Documentation/mainboard/asus/f2a85-m.md
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+Disclaimer: This board is not widely sold any longer. However, refer to F2A85 series status for newer models. ASUS F2A85 PRO should be work in progress (WIP).
+Contents
+
+ 1 Status
+ 1.1 Supported processing units
+ 1.1.1 CPUs
+ 1.1.2 APUs
+ 1.2 Notes
+ 1.3 TODOs
+ 2 UEFI builds that allow flash chip access
+ 3 Hardware info
+ 3.1 DDR voltage controller
+ 3.2 The ASUS digi VRM
+ 3.3 Memory
+ 4 See also
+ 4.1 F2A85 series status
+ 5 References
+
+Status
+Device/functionality Status Comments
+CPU
+CPU works OK the board will start with an AMD A8-5500
+L1 cache enabled OK
+L2 cache enabled OK
+L3 cache enabled N/A
+Multiple CPU support OK
+Multi-core support OK
+Hardware virtualization Untested
+RAM
+EDO N/A
+SDRAM N/A
+SO-DIMM N/A
+DDR N/A
+DDR2 N/A
+DDR3 OK Please select right voltage in menuconfig! Default is 1.5V but some DIMMs need more or less!
+Dual channel support OK
+ECC support N/A
+On-board Hardware
+On-board IDE 3.5" N/A
+On-board IDE 2.5" N/A
+On-board SATA OK Tested all ports of sixpack.
+On-board SCSI N/A
+On-board USB OK Issues with XHCI exist with Asus' BIOS as well
+On-board VGA OK Use dd to extract the legacy BIOS, HDMI untested
+On-board Ethernet OK
+On-board Audio OK tested with headphones in line-out (lime colored)
+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
+On-board Wifi N/A
+On-board Bluetooth N/A
+On-board SD card reader N/A
+Add-on slots/cards
+ISA add-on cards N/A
+Audio/Modem-Riser (AMR/CNR) cards N/A
+PCI add-on cards OK
+Mini-PCI add-on cards N/A
+Mini-PCI-Express add-on cards Unknown
+PCI-X add-on cards N/A
+AGP graphics cards N/A
+PCI Express x1 add-on cards OK
+PCI Express x2 add-on cards N/A
+PCI Express x4 add-on cards OK
+PCI Express x8 add-on cards N/A
+PCI Express x16 add-on cards OK
+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
+Serial port 2 (COM2) N/A
+Parallel port N/A
+PS/2 keyboard OK
+PS/2 mouse Untested
+Game port N/A
+Infrared ?
+PC speaker OK
+DiskOnChip N/A
+Input
+Trackpoint N/A
+Touchpad N/A
+Fn Hotkeys N/A
+Fingerprint Reader N/A
+Laptop
+Docking VGA N/A
+Docking LAN N/A
+Docking USB N/A
+Docking Audio N/A
+Docking Displayport N/A
+Thinklight N/A
+Webcam N/A
+Miscellaneous
+Sensors / fan control Untested
+Hardware watchdog Unknown
+SMBus Unknown
+CAN bus N/A
+CPU frequency scaling OK
+Other powersaving features ?
+ACPI OK ACPI power button event works, suspend is WIP (work in progress).
+Reboot OK warm reboot from Asus' BIOS to coreboot does not work, use reset button after the first time you flash coreboot
+Poweroff OK
+Suspend OK
+Nonstandard LEDs OK
+High precision event timers (HPET) OK
+Random number generator (RNG) ?
+Wake on modem ring Untested
+Wake on LAN Untested
+Wake on keyboard Untested
+Wake on mouse Untested
+TPM Unknown
+Flashrom OK
+Supported processing units
+
+ASUS F2A85-M CPU specification:[1]
+
+ AMD Socket FM2 Athlon�/A- Series Processors
+ Supports CPU up to 4 cores
+ Supports AMD� Turbo Core 3.0 Technology
+ Addenum: AMD Sempron X2 250[2]
+
+Note: Only AMD Virgo: "Trinity" desktop processing units are supported (see list below) but with a hack also Richland desktop processing units might work (contact via mailing list for details). Wikipedia's list of Trinity processors might be more actively maintained.
+CPUs
+
+ AMD Athlon X2 340
+ AMD Athlon X4 740
+ AMD Athlon X4 750k
+
+APUs
+
+The CPU architecture in these APUs are Piledriver, and their GPU is TeraScale 3 (VLIW4-based).
+
+ AMD A4-5300
+ AMD A4-5300B
+ AMD A6-5400K
+ AMD A6-5400B
+ AMD A8-5500
+ AMD A8-5500B
+ AMD A8-5600K
+ AMD A10-5700
+ AMD A10-5800B
+ AMD A10-5800K
+ AMD FirePro A300 - Only sold by OEM
+ AMD FirePro A320 - Only sold by OEM
+
+Notes
+
+ Retrieve the VGA optionrom from the vendor EFI binary by running:
+
+dd if=/dev/mem of=vgabios.bin bs=1k count=64 skip=768
+
+(source)
+
+For internal VGA: Boot the legacy BIOS, and use VGA_support chapter
+
+ Add the extracted VGA optionrom in menuconfig. The device ID for the APU graphics varies, run 'lspci -nn | grep VGA' to find the right ID.
+ If you use PS/2 de-select legacy free
+ De-select running option ROMs, Seabios will run the ROMs that coreboot loads into memory so you should get a text display from Seabios
+ It is required that seabios is the coreboot payload for the F2A85-M or the internal VGA will not be initialized. But read SeaBIOS for how to add payloads to SeaBIOS and set SeaBIOS' boot order to run your payload.
+ its internal VGA comes up just fine (using Change ID I9e0df1669d73863c95c36a3a7fee40d58f6f097e), with unpatched SeaBIOS and these settings:
+ CONFIG_VGA_ROM_RUN=y
+ CONFIG_PCI_ROM_RUN=y
+ CONFIG_ON_DEVICE_ROM_RUN=y
+ Hotswapping the PDIP BIOS chip has some issues (most likely USB3 XHCI, disable it in original bios before hot-flashing to coreboot). Drop a mail to mailing list if you have issues.
+
+TODOs
+
+ test virtualization
+ test IOMMU
+ test HDMI: video over hdmi works with the extracted vga optionrom, audio is untested.
+ blink in suspend mode (GP43, program LDN7 F8=23 and blink with F9=2 for 1s blinks)
+ fix mptable
+ fix resume with USB3.0 used (perhaps there is a bug in resume.c)
+ fix immediate resume after suspend (perhaps PCIe STS needs to be cleared)
+
+UEFI builds that allow flash chip access
+
+ v5016 is untested, but expected to work as well
+ v5018
+ v5103
+ v5104
+ v5107
+ v5202
+ v6002
+ v6004
+ v6102
+ v6402
+ v6404 (requires downgrading to v6402 to flash coreboot)
+ v6501 (requires downgrading to v6402 to flash coreboot)
+ v6502 (requires downgrading to v6402 to flash coreboot)
+
+Build v6502, v6501 and v6404 do not allow access to the flash chip.
+
+Fortunately it is possible to downgrade build v6502, v6501 and v6404 to v6402, with EZFlash.
+
+Downgrading is done by downloading build v6402 from ASUS' F2A85-M download page and copying it to (the root directory of) a FAT32 formatted USB flash drive.
+
+Enter the EFI setup, switch to advanced mode if necessary, open the 'Tool' tab and select "ASUS EZ Flash 2 Utility".
+Hardware info
+
+This board ships with a socketed Winbond 25Q64F, 64 Mbit (8 Mbyte) chip, in PDIP 300 mil package:
+Winbond 25Q64F
+
+The chip manual is available here
+
+For out of band flashing, I use a
+
+ 3M test clip model 923739-08-ND
+
+It has .300" spacing, 8 pin DIP clip, gold finish and 'headless heads'. I hook this up to a bus pirate. This works but reading and writing take forever:
+
+\# time /usr/src/flashrom/flashrom -p buspirate_spi:dev=/dev/ttyUSB0 -w 20130826-coreboot.rom
+flashrom v0.9.6.1-r1669 on Linux 3.8-2-amd64 (x86_64)
+flashrom is free software, get the source code at http://www.flashrom.org
+
+Calibrating delay loop... OK.
+Found Winbond flash chip "W25Q64" (8192 kB, SPI) on buspirate_spi.
+Reading old flash chip contents... done.
+Erasing and writing flash chip... Erase/write done.
+Verifying flash... VERIFIED.
+
+real 35m35.409s
+user 0m55.976s
+sys 0m12.920s
+
+DDR voltage controller
+
+The DDR voltage controller is accessible through the AUX SMBUS device 0x15 and it is most likely driven by programmable current source NCT3933U (datasheet on nuvoton website).
+The ASUS digi VRM
+
+The ASUS digi voltage controller is accessible through the SMBUS device 0x20 and it is most likely driven by CHL8318 or similar chip (re-branded)
+Memory
+
+If you use single dimm plug it to DIMM_A2 or DIMM_B2.
+
+I use:
+
+2x 2GB DDR3 modules in blue slots:
+
+\#modprobe i2c-piix4
+\#modprobe eeprom
+\#decode-dimms
+
+---=== Memory Characteristics ===---
+Fine time base 2.500 ps
+Medium time base 0.125 ns
+Maximum module speed 1333MHz (PC3-10666)
+Size 2048 MB
+Banks x Rows x Columns x Bits 8 x 14 x 10 x 64
+Ranks 2
+SDRAM Device Width 8 bits
+tCL-tRCD-tRP-tRAS 8-8-8-24
+Supported CAS Latencies (tCL) 9T, 8T, 7T, 6T
+
+See also
+F2A85 series status
+
+Only boards with internal wiki page links are Supported Motherboards.
+
+ ASUS F2A85-M
+ ASUS F2A85-M LE
+ ASUS F2A85-M PRO[3] - the most available model in the entire F2A85 series. Be sure to check its status to see what works and what doesn't.
+ ASUS F2A85-M2 - Confirmed working in the #coreboot IRC channel 2015-03-04. Unsure if WIP.
+ ASUS F2A85-M/CSM - Unsure if WIP.
+
+References
+
+ Jump up ↑ https://www.asus.com/Motherboards/F2A85M/specifications/
+ Jump up ↑ http://support.asus.com/Cpusupport/List.aspx?SLanguage=en&m=F2A85-M&p=1&s=43
+ Jump up ↑ http://www.asus.com/Motherboards/F2A85M_PRO/
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