coreboot April 2011

coreboot@coreboot.org

66 participants
229 discussions

Re: [coreboot] DL145 G1 with dual dualcore CPU using coreboot ?
by Oskar Enoksson 28 Sep '11

28 Sep '11

Oskar Enoksson wrote: > Myles Watson wrote: > >>> I think Myles was right, there is a i2c mux in this server that somehow >>> multiplexes DIMM devices on the i2c bus. I was able to guess which i2c >>> ports contain the DIMM info, and which port is the mux, then added the >>> mux to devicetree.cb and the DIMM ports under it. Now I'm able to use >>> memory from both CPU's, at least for the combination of DIMM's I have >>> (2x2x1GB and … [View More]

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I865 memory controller status
by James Wall 09 Sep '11

09 Sep '11

Hello all, What is the status of the i865 memory controller? I have a board that all the other chips are supported but the memory controller is a big question mark.

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[patch] update ddr3 max frequency
by Marc Jones 03 Jun '11

03 Jun '11

We found this with some testing at BTDC. This patch sets max freq defaults for ddr2 and ddr3for fam10. It may be overridden by a developer setting it in romstage.c. Signed-off-by: Marc Jones <marcj303(a)gmail.com> -- http://se-eng.com

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[PATCH] Correct wrong PCI ID vor VIA K8M890 Chrome
by Alex G. 03 Jun '11

03 Jun '11

before anyone bricks a board Alex.

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[PATCH] More explicite and straight way to set seed
by Bao, Zheng 03 Jun '11

03 Jun '11

More explicite and straight way to set seed. Signed-off-by: Zheng Bao <zheng.bao(a)amd.com> Index: src/northbridge/amd/amdmct/mct/mctsrc.c =================================================================== --- src/northbridge/amd/amdmct/mct/mctsrc.c (revision 6135) +++ src/northbridge/amd/amdmct/mct/mctsrc.c (working copy) @@ -1023,13 +1023,9 @@ dev = pDCTstat->dev_dct; for (index = 0x50; index <= 0x52; index ++) { - val = Get_NB32_index_wait(dev, index_reg, index); - … [View More]

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[PATCH 7/7] SuperMicro H8SCM support (mainboard)
by Bao, Zheng 25 May '11

25 May '11

Add support for Supermicro H8scm. It is AMD C32 + SR5650 + SP5100. Signed-off-by: Zheng Bao <zheng.bao(a)amd.com>

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[RFC] cheapish and free usb spi flashing device
by Stefan Tauner 18 May '11

18 May '11

hey there! (cross-posted to both mailing lists) i am currently designing a small and cheap platform to recover from coreboot and other failures easily. the reason i am writing this is to get feedback from you regarding desired features of and interest in such a device. right now my plan is the following: an avr atmegaXXu2 is connected via usb and implements the serprog protocol to let flashrom make use of it. the avr can operate down to 3.0V which would allow easy interfacing with today's spi … [View More]flashes without any level shifting. to get the desired supply voltage from usb's 5V i will use a fixed 3.3V ldo voltage regulator (ld1117). apart from a few supporting parts (caps, fuse, usb line termination etc.) the only things missing are sockets for the spi chips. at the moment i am planing to include: - soic8 pads (combined for 150 and 200mil devices) and enough room for a soic8 zif adapter (like the one from http://bios-repair.co.uk) - vias for a 24 pin zif dip/dil socket (150 and 300mil spacing combined): 8 pins for dip8 flashes and 16 for soic16 flashes (those would require a soic to dip adapter). 8pin and 16pin flashes dont share pins therefore the large socket... - vias for a single row 8pin header to allow attaching probes/test clips (e.g. http://www.pomonaelectronics.com/images/large/6109.jpg) to hook up in-situ flashes. parts for this excluding the pcb would be in the 10-25$ range. depending on how many pcbs i/we would produce the whole thing would cost probably about 40$. not THAT cheap, but quite better than the dediprog stuff :) it would also be more convenient and open than the FT2232SPI based on the DLP-USB1232H (http://flashrom.org/FT2232SPI_Programmer). the willem programmers seem to be lpt only? are there any other cheap flashers i dont know? i am not sure about what to do with soic16 chips. the solution laid out above which requires an additional adapter and wastes a lot of space is awkward. should i just include soic16 pads instead? should i drop support for them altogether and let the user hook them up with clips? are they in use anywhere? my intel desktop board has pads for it, but i am not sure if there are any boards in the wild which really use them... i was also thinking about an offline mode which uses an SD-card or another flash to store/load an image for the target flash. push buttons would activate a cloning operation. this way one could clone chips easily without a pc, but i am not sure at all if thats worth it. what do you think? -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner [View Less]

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AMD Persimmon update
by Scott Duplichan 16 May '11

16 May '11

The attached changes for the AMD Persimmon board improve OS support and reduce boot time. DOS boot from SSD drive is 640 ms. Windows 7, Windows XP, and linux can install from DVD and boot from hard disk. Signed-off-by: Scott Duplichan <scott(a)notabs.org> Thanks, Scott

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[PATCH] RS690 code booting RS740 with ECS A740GM-M
by Ivaylo Valkov 09 May '11

09 May '11

Adds RS740 HT and internal graphics PCI ids. Adds support for RS740 in RS690 code (some of the fam10 code from RS780). Adds support for ECS A740GM-M. This definitely needs more patches and fine-tuning. Only tested on RS740. Signed-off-by: Ivaylo Valkov <ivaylo(a)e-valkov.org> --- Hello all, And thank you for all the work you have done so far. This is kind of long e-mail, so for the impatient - with these patches I am able to initialize the RS740 chipset on the ECS A740GM-M … [View More]motherboard and boot GNU/Linux (with Xorg), but the code definitely needs more fine-tuning and patching. All my hardware died recently, so I bought two identical ECS A740GM-M [1] replacement boards with AMD RS740/740G chipset as an opportunity to help the coreboot project gather some information. The requested information for flashrom and the RS740 chipset is attached. One thing led to another and I've gone a lot further - the board seems usable. Flashrom works on the board. The flash chip is recognised as MX25L8005, but it is actually [2] MX25L8006. [3] In spite of that I was able to flash it and boot the proprietary BIOS and coreboot. I've experienced some CMOS checksum errors with the proprietary BIOS after flashing, but everything worked fine after setting the date. This does not happen always and I can't see a pattern when it does. Should I post the flashrom related information on the flashrom mailing list? With flashrom working and the information on this list (and few other places) that the RS740 is RS690 with new graphics I decided to test the RS690 code on the board. So, after nearly a month of cut-and-paste from mahogany_fam10 and dmb690t, new code in RS690, borrowed from RS780, ACPI from mahogany_fam10 for the board and some modifications I ended up with something usable. The CPU is Sempron 140 (AM3/AM2+ socket). I have some basic and blurry understanding of the boot process. I do not know why exactly all that I've done worked. It is fair to say that I have read almost zero documentation. All was achieved only by reading the available code and observing the logic. Maybe it wasn't the smartest and safest thing to do, but worth it. So carefully review the code. Some of it is there so I could build. It might be irrelevant. Patches are attached. I used a cmos.layout from mahogany_fam10 to build, but images with enabled CONFIG_USE_OPTION_TABLE (use CMOS/NVRAM values instead of hard coded ones) in menuconfig do not boot at all - not even single serial line of output. With recent changes and the move of CMOS to CBFS I can't build with that option. I am able to boot GNU/Linux. USB, network, sound, ATA and SATA are working. PCI worked with external graphic and network card. PCIe is not tested. The master and stable releases of SeaBIOS hang when there is a USB mouse connected after printing "USB mouse initialized". USB works fine under GNU/Linux. HT is initialized to 200MHz. The lspci output (also attached) after coreboot loads, shows that 1.6GHz link frequency is possible. The documented limit for RS690 is 1GHz. The RS780 code is implemented differently, so it has k8 and fam10 support. Do you think it will be possible to use something from RS780 code? I am not confident and competent to make the changes myself, but I am willing to test patches (any). The lspci output for the board with coreboot running differs(in places). I think it is ACPI and devicetree.cb related. Don't know how to fix it right now. After coreboot initializes the board, the CPU has two states - 1.9 GHz and 2.7GHz. With proprietary BIOS the CPU can do two more - 1.5GHz and 800MHz. That is ACPI issue, righ? Before adding ACPI the only possible frequency was 2.7GHz. The code that prints the CPU revision (in get_cpu_revision) is taken from RS780. I think it prints (only that!) wrong revision - "K8_10" instead of "Fam 10". It seems it should be "eax <= 0x100fff" instead of "eax <= 0x100f00", but as I've said I didn't read enough documentation. I've extracted a VGA BIOS image from the proprietary BIOS and the internal graphics card worked. Both DVI and VGA connectors work. Xorg loads, but if the resolution is higher than or equal to 1024x768 the screen flickers and I see horizontal lines. [4] When the display is refreshed (key press, mouse move, by programs) it is awful. [5] For lower resolutions it is not noticeable or even missing. This is tested on deblobed Linux-libre kernel only, and the drivers do not load the binary-blob firmware for 3D acceleration. Is it possible to initialize the internal graphics on RS690/RS740 from coreboot code and use VGA BIOS image from SeaBIOS? Like it is done for the M2V-MX SE board? Yes I know it uses VIA chipset and it has documentation. I guess what I am asking is, is it there enough documentation released by AMD to make it work. I've hacked a PCI header for the VGA BIOS image from SeaBIOS, so it can be loaded by coreboot (vendor/device ID complains). The ROM is loaded, but SeaBIOS hangs. Not that I was expecting to just work. There are microcode patches for some CPUs that are non-free binary-blobs (examine their license headers). Is it possible to make loading such microcode configurable? I am unable to build the fam10 code without a microcode filename. I understand that AMD (and other companies) might not want to release such information for various reasons, but I prefer to use "crippled" CPU instead of non-free microcode, when I am running free software BIOS. Do I really need them for Sempron anyway? It works without them. Didn't notice any difference in performance with them. Not that the current state of the board can be used for measuring performance. The work-around I am using right now is zero-filled microcode patch file in the board directory, that does nothing. Images of the board and the chips can be found on my "web site" [6]. I've copied the copyright notices from files that had such and I've used code from. For the rest I've put a comment pointing to the file I've borrowed from. Hope that is the right way to do it. Unfortunately the code I used restricts me to GPLv2 only, I prefer GPLv2(or later). What is the policy on GPLv3 (or later) code for that matter? Just thinking for possible future contributions. P.S. This is a lot of information (and issues). If anything has to go in the issue tracker I will do it. [1] http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?CategoryID=1&D… [2] http://e-valkov.org/coreboot/ecs-a740gm-m-bios-chip.jpg [3] http://www.mxic.com.tw/QuickPlace/hq/PageLibrary4825740B00298A3B.nsf/h_Inde… [4] http://e-valkov.org/coreboot/video-card-1.ogv [5] http://e-valkov.org/coreboot/video-card-2.ogv [6] http://e-valkov.org/coreboot/ [View Less]

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[PATCH 3/4] RS780 DDI Lanes configure support
by She, Kerry 06 May '11

06 May '11

Hello, RS780 DDI Lanes configure support Signed-off-by: Kerry She <Kerry.she(a)amd.com> Regards, Kerry She < kerry.she(a)amd.com> Tel: 86-10-6280-1415 Mobile: 86 - 152 1018 2083

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coreboot April 2011