3 This page describes how to run coreboot on the [ASUS A88XM-E].
7 Both "Trinity" and "Richland" FM2 desktop processing units are working,
8 the CPU architecture in these CPUs/APUs are [Piledriver],
9 and their GPU is [TeraScale 3] (VLIW4-based).
11 Kaveri is non-working at the moment (FM2+),
12 the CPU architecture in these CPUs/APUs are [Steamroller],
13 and their GPU is [Sea Islands] (GCN2-based).
15 A10 Richland is recommended for the best performance and working IOMMU.
18 +------------------+--------------------------------------------------+
20 +------------------+--------------------------------------------------+
21 | DDR voltage IC | Nuvoton 3101S |
22 +------------------+--------------------------------------------------+
23 | Network | Realtek RTL8111G |
24 +------------------+--------------------------------------------------+
25 | Northbridge | Integrated into CPU with IMC and GPU (APUs only) |
26 +------------------+--------------------------------------------------+
27 | Southbridge | Bolton-D4 |
28 +------------------+--------------------------------------------------+
29 | Sound IC | Realtek ALC887 |
30 +------------------+--------------------------------------------------+
31 | Super I/O | ITE IT8603E |
32 +------------------+--------------------------------------------------+
33 | VRM controller | DIGI VRM ASP1206 |
34 +------------------+--------------------------------------------------+
40 +---------------------+------------+
42 +=====================+============+
43 | Socketed flash | yes |
44 +---------------------+------------+
46 +---------------------+------------+
48 +---------------------+------------+
50 +---------------------+------------+
51 | Write protection | yes |
52 +---------------------+------------+
53 | Dual BIOS feature | no |
54 +---------------------+------------+
55 | Internal flashing | yes |
56 +---------------------+------------+
59 ### Internal programming
61 The main SPI flash can be accessed using [flashrom], if the
62 AmdSpiRomProtect modules have been deleted in the factory image previously.
66 Using a PLCC Extractor or any other appropriate tool, carefully remove the
67 DIP-8 BIOS chip from its' socket while avoiding the bent pins, if possible.
68 To flash it, use a [flashrom]-supported USB CH341A programmer - preferably with a
69 green PCB - and double check that it's giving a 3.3V voltage on the socket pins.
71 ## Integrated graphics
73 ### Retrieve the VGA optionrom ("Retrieval via Linux kernel" method)
75 Make sure a proprietary UEFI is flashed and boot Linux with iomem=relaxed flag.
76 Some Linux drivers (e.g. radeon for AMD) make option ROMs like the video blob
77 available to user space via sysfs. To use that to get the blob you need to
78 enable it first. To that end you need to determine the path within /sys
79 corresponding to your graphics chip. It looks like this:
81 # /sys/devices/pci<domain>:<bus>/<domain>:<bus>:<slot>.<function>/rom.
83 You can get the respective information with lspci, for example:
86 # -[0000:00]-+-00.0 Advanced Micro Devices, Inc. [AMD] Family 16h Processor Root Complex
87 # +-01.0 Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8210]
90 Here the the needed bits (for the ROM of the Kabini device) are:
92 # PCI domain: (almost always) 0000
93 # PCI bus: (also very commonly) 00
94 # PCI slot: 01 (logical slot; different from any physical slots)
95 # PCI function: 0 (a PCI device might have multiple functions... shouldn't matter here)
97 To enable reading of the ROM you need to write 1 to the respective file, e.g.:
99 # echo 1 > /sys/devices/pci0000:00/0000:00:01.0/rom
101 The same file should then contain the video blob and it should be possible to simply copy it, e.g.:
103 # cp /sys/devices/pci0000:00/0000:00:01.0/rom vgabios.bin
105 romheaders should print reasonable output for this file.
107 This version is usable for all the GPUs.
108 1002,9901 Trinity (Radeon HD 7660D)
109 1002,9904 Trinity (Radeon HD 7560D)
110 1002,990c Richland (Radeon HD 8670D)
111 1002,990e Richland (Radeon HD 8570D)
112 1002,9991 Trinity (Radeon HD 7540D)
113 1002,9993 Trinity (Radeon HD 7480D)
114 1002,9996 Richland (Radeon HD 8470D)
115 1002,9998 Richland (Radeon HD 8370D)
116 1002,999d Richland (Radeon HD 8550D)
117 1002,130f Kaveri (Radeon R7)
122 - S3 resume (sometimes)
123 - Windows 7 can't boot because of the incomplete ACPI implementation
126 ### XHCI ports can break after using any of the blobs, restarting the
127 board with factory image makes it work again as fallback.
128 Tested even with/without the Bolton and Hudson blobs.
136 - one ATOMBIOS module for all the integrated GPUs
137 - manage to work with Kaveri/Godavary (they are using a binaryPI)
138 - IRQ routing is done incorrect way - common problem of fam15h boards
143 - CPU frequency scaling
144 - flashrom under coreboot
146 - Hardware monitoring
147 - Integrated graphics
152 - PS/2 keyboard mouse (during payload, bootloader)
155 - SuperIO based fan control
156 - USB (disabling XHCI controller makes to work as fallback USB2.0 ports)
163 [ASUS A88XM-E]: https://www.asus.com/Motherboards/A88XME/
164 [Board manual]: https://dlcdnets.asus.com/pub/ASUS/mb/SocketFM2/A88XM-E/E9125_A88XM-E.pdf
165 [flashrom]: https://flashrom.org/Flashrom
166 [GD25Q64]: http://www.elm-tech.com/ja/products/spi-flash-memory/gd25q64/gd25q64.pdf
167 [Piledriver]: https://en.wikipedia.org/wiki/Piledriver_%28microarchitecture%29#APU_lines
168 [Sea Islands]: https://en.wikipedia.org/wiki/Graphics_Core_Next#GCN_2nd_generation
169 [Steamroller]: https://en.wikipedia.org/wiki/Steamroller_(microarchitecture)
170 [TeraScale 3]: https://en.wikipedia.org/wiki/TeraScale_%28microarchitecture%29#TeraScale_3