coreboot February 2011

coreboot@coreboot.org

52 participants
283 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 2x2x512MB). >>> >>> >> I'm glad it worked out! >> >> >>> So I'm basically able to use these servers now. I would love to have >>> ACPI and Cool'nQuiet of course, perhaps I'll try to do that later. >>> >>> Thanks very much for all help! If you want me to commit the new >>> mainboard to your svn repository let me know. >>> >>> >> Yes, please. If you'll send your latest patch with a Signed-off-by: line, >> I'll take it from there. >> >> Thanks, >> Myles >> >> > I hope this file is the way you want it. I did "svn cp > src/mainboard/tyan/s2881 src/mainboard/hp/dl145_g1" and then modified > the files, then "svn diff src/mainboard" so I assume you should do the > same svn cp operation, then apply my patch, then commit to retain the > original files' history. > I have fixed several problems and now it boots reliably for both and older dual Opteron 248 server and an upgraded dual Opteron 280 server. memtest86+ doesn't work, but according to another mailinglist thread memtest cannot handle tables in high memory, so that seems to be a memtest issue. Attached is a cleaned-up patch. Thanks to Myles and others for excellent help and support. I hope someone finds the result useful.

6 12

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

03 Jun '11

before anyone bricks a board Alex.

2 1

[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); - val |= (FenceTrnFinDlySeed & 0x1F); + val = (FenceTrnFinDlySeed & 0x1F); if (index != 0x52) { - val &= ~(0xFF << 8); - val |= (val & 0xFF) << 8; - val &= 0xFFFF; - val |= val << 16; + val |= val << 8 | val << 16 | val << 24; } Set_NB32_index_wait(dev, index_reg, index, val); } Index: src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c =================================================================== --- src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c (revision 6135) +++ src/northbridge/amd/amdmct/mct_ddr3/mctsrc.c (working copy) @@ -972,13 +972,9 @@ */ dev = pDCTstat->dev_dct; for (index = 0x50; index <= 0x52; index ++) { - val = Get_NB32_index_wait(dev, index_reg, index) & ~0xFF; - val |= (FenceTrnFinDlySeed & 0x1F); + val = (FenceTrnFinDlySeed & 0x1F); if (index != 0x52) { - val &= ~(0xFF << 8); - val |= (val & 0xFF) << 8; - val &= 0xFFFF; - val |= val << 16; + val |= val << 8 | val << 16 | val << 24; } Set_NB32_index_wait(dev, index_reg, index, val); }

3 2

[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 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/

4 10

[patch] fix Windows 7 checked build assert caused by FADT length/revision inconsistency
by Scott Duplichan 17 Apr '11

17 Apr '11

Running a checked build of Windows is needed for understanding its various BIOS related BSODs. Win7 checked build complains when running coreboot+seabios: FADT revision inconsistent with length. Revision: 0x1 Length: 0xf4 Expected Length: 0x74 The following patch solves the problem. Tested on Mahogany_fam10 only. Signed-off-by: Scott Duplichan <scott(a)notabs.org> Index: src/southbridge/nvidia/ck804/ck804_fadt.c =================================================================== --- src/southbridge/nvidia/ck804/ck804_fadt.c (revision 5978) +++ src/southbridge/nvidia/ck804/ck804_fadt.c (working copy) @@ -20,10 +20,11 @@ memcpy(header->signature, "FACP", 4); #ifdef LONG_FADT header->length = 244; + header->revision = 3; #else header->length = 0x74; + header->revision = 1; #endif - header->revision = 1; memcpy(header->oem_id, "CORE ", 6); memcpy(header->oem_table_id, "CB-FADT ", 8); memcpy(header->asl_compiler_id, "IASL", 4); Index: src/mainboard/iwill/dk8_htx/fadt.c =================================================================== --- src/mainboard/iwill/dk8_htx/fadt.c (revision 5978) +++ src/mainboard/iwill/dk8_htx/fadt.c (working copy) @@ -19,7 +19,7 @@ memset((void *)fadt,0,sizeof(acpi_fadt_t)); memcpy(header->signature,"FACP",4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id,OEM_ID,6); memcpy(header->oem_table_id,"COREBOOT",8); memcpy(header->asl_compiler_id,ASLC,4); Index: src/mainboard/asrock/939a785gmh/fadt.c =================================================================== --- src/mainboard/asrock/939a785gmh/fadt.c (revision 5978) +++ src/mainboard/asrock/939a785gmh/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/kontron/kt690/fadt.c =================================================================== --- src/mainboard/kontron/kt690/fadt.c (revision 5978) +++ src/mainboard/kontron/kt690/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/gigabyte/ma78gm/fadt.c =================================================================== --- src/mainboard/gigabyte/ma78gm/fadt.c (revision 5978) +++ src/mainboard/gigabyte/ma78gm/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/gigabyte/ma785gmt/fadt.c =================================================================== --- src/mainboard/gigabyte/ma785gmt/fadt.c (revision 5978) +++ src/mainboard/gigabyte/ma785gmt/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/mahogany/fadt.c =================================================================== --- src/mainboard/amd/mahogany/fadt.c (revision 5978) +++ src/mainboard/amd/mahogany/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/pistachio/fadt.c =================================================================== --- src/mainboard/amd/pistachio/fadt.c (revision 5978) +++ src/mainboard/amd/pistachio/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/dbm690t/fadt.c =================================================================== --- src/mainboard/amd/dbm690t/fadt.c (revision 5978) +++ src/mainboard/amd/dbm690t/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/serengeti_cheetah/fadt.c =================================================================== --- src/mainboard/amd/serengeti_cheetah/fadt.c (revision 5978) +++ src/mainboard/amd/serengeti_cheetah/fadt.c (working copy) @@ -19,7 +19,7 @@ memset((void *)fadt,0,sizeof(acpi_fadt_t)); memcpy(header->signature,"FACP",4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id,OEM_ID,6); memcpy(header->oem_table_id,"COREBOOT",8); memcpy(header->asl_compiler_id,ASLC,4); Index: src/mainboard/amd/mahogany_fam10/fadt.c =================================================================== --- src/mainboard/amd/mahogany_fam10/fadt.c (revision 5978) +++ src/mainboard/amd/mahogany_fam10/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/tilapia_fam10/fadt.c =================================================================== --- src/mainboard/amd/tilapia_fam10/fadt.c (revision 5978) +++ src/mainboard/amd/tilapia_fam10/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/amd/serengeti_cheetah_fam10/fadt.c =================================================================== --- src/mainboard/amd/serengeti_cheetah_fam10/fadt.c (revision 5978) +++ src/mainboard/amd/serengeti_cheetah_fam10/fadt.c (working copy) @@ -40,7 +40,7 @@ memset((void *)fadt,0,sizeof(acpi_fadt_t)); memcpy(header->signature,"FACP",4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id,OEM_ID,6); memcpy(header->oem_table_id,"COREBOOT",8); memcpy(header->asl_compiler_id,ASLC,4); Index: src/mainboard/iei/kino-780am2-fam10/fadt.c =================================================================== --- src/mainboard/iei/kino-780am2-fam10/fadt.c (revision 5978) +++ src/mainboard/iei/kino-780am2-fam10/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/via/epia-m700/fadt.c =================================================================== --- src/mainboard/via/epia-m700/fadt.c (revision 5978) +++ src/mainboard/via/epia-m700/fadt.c (working copy) @@ -30,7 +30,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, "VX800 ", 6); memcpy(header->oem_table_id, "LNXBACPI", 8); memcpy(header->asl_compiler_id, "LXB", 8); Index: src/mainboard/via/vt8454c/fadt.c =================================================================== --- src/mainboard/via/vt8454c/fadt.c (revision 5978) +++ src/mainboard/via/vt8454c/fadt.c (working copy) @@ -29,7 +29,7 @@ memset((void *) fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, "CX700 ", 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, "CORE", 4); Index: src/mainboard/via/epia-m/fadt.c =================================================================== --- src/mainboard/via/epia-m/fadt.c (revision 5978) +++ src/mainboard/via/epia-m/fadt.c (working copy) @@ -31,7 +31,7 @@ memset((void *)fadt,0,sizeof(acpi_fadt_t)); memcpy(header->signature,"FACP",4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id,OEM_ID,6); memcpy(header->oem_table_id,"COREBOOT",8); memcpy(header->asl_compiler_id,ASLC,4); Index: src/mainboard/via/epia-n/fadt.c =================================================================== --- src/mainboard/via/epia-n/fadt.c (revision 5978) +++ src/mainboard/via/epia-n/fadt.c (working copy) @@ -33,7 +33,7 @@ memset((void *)fadt,0,sizeof(acpi_fadt_t)); memcpy(header->signature,"FACP",4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id,OEM_ID,6); memcpy(header->oem_table_id,"COREBOOT",8); memcpy(header->asl_compiler_id,ASLC,4); Index: src/mainboard/jetway/pa78vm5/fadt.c =================================================================== --- src/mainboard/jetway/pa78vm5/fadt.c (revision 5978) +++ src/mainboard/jetway/pa78vm5/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/technexion/tim8690/fadt.c =================================================================== --- src/mainboard/technexion/tim8690/fadt.c (revision 5978) +++ src/mainboard/technexion/tim8690/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/technexion/tim5690/fadt.c =================================================================== --- src/mainboard/technexion/tim5690/fadt.c (revision 5978) +++ src/mainboard/technexion/tim5690/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4); Index: src/mainboard/intel/eagleheights/fadt.c =================================================================== --- src/mainboard/intel/eagleheights/fadt.c (revision 5978) +++ src/mainboard/intel/eagleheights/fadt.c (working copy) @@ -56,7 +56,7 @@ memset((void *) fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, "CORE ", 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, "CORE", 4); Index: src/mainboard/asus/m4a785-m/fadt.c =================================================================== --- src/mainboard/asus/m4a785-m/fadt.c (revision 5978) +++ src/mainboard/asus/m4a785-m/fadt.c (working copy) @@ -52,7 +52,7 @@ memset((void *)fadt, 0, sizeof(acpi_fadt_t)); memcpy(header->signature, "FACP", 4); header->length = 244; - header->revision = 1; + header->revision = 3; memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "COREBOOT", 8); memcpy(header->asl_compiler_id, ASLC, 4);

3 4

Help for motherboard
by sh4r4d＠gmail.com 10 Apr '11

10 Apr '11

Hi All, I wanted to build a new Desktop workstation with currently available CPU and motherboard that is supported by Coreboot bios, I have searched few links for it e.g. Ubuntu-certified hardware http://www.ubuntu.com/certification/ Zareason http://zareason.com/shop/home.php AMD Processors - Recommended Motherboards http://products.amd.com/pages/recommendedmbfilter.aspx?AspxAutoDetectCookie… But these site mention hardware where gnu/linux could run easily, but they do not inform about coreboot bios compatibility. And checked http://www.coreboot.org/Supported_Motherboards for searching suitable motherboard, seen coreboot related video in youtube. But I did not found here new Intel and AMD cpu for motherboards in Desktop/Workstation section (except Laptop) mentioned for e.g. Intel Core 7i Intel Core 3i and similar AMD's latest. So finally I like to know do these newer CPU's any motherboard going to be supported in near future, So I will purchase that motherboard. I want to find it out as it will be difficult to change hardware than software later. Please suggest which CPU/motherboard combination is good with coreboot. -- Regards, -sharad

5 9

870 attempt
by Jonathan A. Kollasch 23 Mar '11

23 Mar '11

Hi, I've attempted to use the rs780 and sb800 code on a AM3 870 + SB850 board. Raminit seems to go okay, as does the first bits of ramstage. However, ramstage fails after the first two passes through rs780_enable(). It stalls in get_vid_did() reading PCI config space of device 2 (or 4). Also, the rs780 HT init code thinks the link should run at 200MHz, maybe that's related. I'm aware that this code wasn't exactly intended for the 870, but maybe someone has some hints of what to try next. Jonathan Kollasch

9 30

Microcode CPU writeup
by Rudolf Marek 13 Mar '11

13 Mar '11

Hi all, Would someone be interrested if I write something about microcoded CPUs controllers? Like the classic uCode ROM + ALU + Regs + IO unit? Thanks, Rudolf

4 3

Invite: Silicon Valley Coreboot Hackathon
by David Hendricks 12 Mar '11

12 Mar '11

Stefan mentioned that he knows several people who he has worked with in the area, and we're thinking it would be fun to get everyone together for a day of hacking on Coreboot and related projects such as Flashrom and SeaBIOS. So, I'd like to invite everyone to Google's beautiful campus in Mountain View for a day of Coreboot hacking, board porting, BIOS flashing, etc. We'll set a tentative date for Saturday the 29th of this month from noon 'till 8pm. We also have FlexyICE ROMulators and Dediprog SPI flash programmers so folks can worry less about bricking their system. Maybe Stefan can whip up a tutorial for newbies if there is particular interest in a specific area. If this sounds like something you'd like to participate in, please fill out the registration form at the URL below. It will help us to ensure we have adequate facilities reserved, equipment ready, visitor badges printed, and technically prepared for the topics of interest. We'll also send confirmation with detailed instructions on how to find the building / conference room to those who register. Registration form: https://spreadsheets.google.com/viewform?formkey=dGRab2s1VHRKNzRDX19pTVVrTj… -- David Hendricks (dhendrix) Systems Software Engineer, Google Inc.

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[PATCH] [and discussion] Add target for ASUS K8V-X SE motherboard
by Alex G. 07 Mar '11

07 Mar '11

This is the most up-to-date patch on a board I have been struggling with for over a month now I am posting this patch for both discussion and inclusion. The good part is we get to linux. The bad part is that linux gets bored of waiting for the IRQs. The IRQs do not seem to work, at least, they partially do not work. This board is on loan from a friend, and I will have to give it back in a few days. If I can't get it to work, I'd at least like my work to be available for the next person who may want to get this model running. The first obvious sign of something going wrong is the keyboard not responding in SeaBIOS. Later, linux tells us: "..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0 ..MP-BIOS bug: 8254 timer not connected to IO-APIC ...trying to set up timer (IRQ0) through the 8259A ... ..... (found apic 0 pin 0) ... ...... works." message from linux. This indicates to me that linux is setting up the timer as IRQ0 through the i8259A, through the IOAPIC pin 0 as ExtInt, and to the LAPIC lint0 as ExtInt. The mfg BIOS sets it up through the IOAPIC pin2, and it works. We later see the i8259 IMR= fffa, which means IRQ0 (timer) and IRQ2(cascade) are unmasked. In the mfg BIOS, the IMR = fffb, which means that only IRQ2 is unmasked, so the timer should be set up through the IOAPIC pin 2. Under coreboot, linux finally says ata3: lost interrupt (Status 0x58) and dies. Well, maybe it's just the IOAPIC acting up, so let's put a "noapic" in the kernel arguments and see what happens. IRQs still do not work and linux stops at the same error message. The fact that the IOAPIC is accepting IRQ0 from the PIC means that the IOAPIC should at least work as a VirtualWire, but the fact that interrupts still do not work in "noapic" mode indicates the opposite. Is it the IOAPIC acting up, or the i8259? Maybe I'm looking at the problem from the wrong perspective. I'd appreciate any suggestions or hints to get this board corebooting. I'm also attaching the boot log from both coreboot and the mfg BIOS for a more complete reference. Alex

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coreboot February 2011