Working BIOS mod for WS2008 in Xen HVM

Discussion in 'Virtualization' started by belkhal, Feb 6, 2009.

  1. belkhal

    belkhal MDL Novice

    Oct 13, 2008
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    #1 belkhal, Feb 6, 2009
    Last edited by a moderator: Apr 20, 2017
  2. waffledog

    waffledog MDL Novice

    Mar 17, 2009
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    Sincere Thanks

    I see that nobody has replied to your post, but I just wanted to you know that I REALLY REALLY do appreciate you sharing information like this!

    It's been really difficult finding information about the Xen-related modifications.

    Again, thank you!
    :D
     
  3. ll25031968

    ll25031968 MDL Novice

    Aug 24, 2009
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    not work on the last version of xenserver.

    can you confirm that?

    thanks.
     
  4. ll25031968

    ll25031968 MDL Novice

    Aug 24, 2009
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    nothing?

    nothing?
     
  5. amiskell

    amiskell MDL Novice

    Oct 29, 2009
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    I've successfully injected the HPQOEM SLIC 2.1 into the XenServer 5.5.0 Update 2 hvmloader (tested with Windows 7 x64) , I'll be posting the information/file into the Virtualization forum later today once I have a bit of time.
     
  6. Acid_Scorpion

    Acid_Scorpion MDL Novice

    Apr 11, 2010
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    Working hvmloader with ASUS SLIC 2.1 for Centos 5.5

    Some OS information:

    # cat /etc/redhat-release
    CentOS release 5.5 (Final)

    # uname -a
    Linux acid-notebook.acisco.org 2.6.18-194.3.1.el5xen #1 SMP Thu May 13 14:27:32 EDT 2010 i686 i686 i386 GNU/Linux

    # rpm -qa | grep xen
    kernel-xen-2.6.18-194.8.1.el5
    xen-libs-3.0.3-105.el5_5.3
    kernel-xen-2.6.18-194.3.1.el5
    xen-3.0.3-105.el5_5.3

    Link to downlod modified hvmloader and certificate v. 2.1 for ASUS:

    xttp://rapidshare.com/files/406446518/hvmloader-slic.zip
    MD5: 73DE4F5DEC8A4B2A4302F179DBCE2629
     
  7. cronolog

    cronolog MDL Novice

    Nov 4, 2010
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    Instructions in first post worked great for me for Win7 x64 running under xen-4.0.0 on Gentoo linux. Had to tweak the patch file slightly, since there's an extra line in the file being patched in this version of xen. I also used the SLIC from my host machine rather than the one provided in the attachment, so had to change oemid & oemtableid appropriately too.

    For other gentoo users, it's the app-emulation/xen-tools package you'll want to patch, not the plain xen one, since this one is where hvmloader is compiled/installed from. You can use the ebuild tool in gentoo to extract and compile the source as part of the process.
     
  8. HSChronic

    HSChronic MDL Expert

    Aug 25, 2007
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    sticking this thread so that it stays near the top because this is great info for people running Xen.
     
  9. johnkeates

    johnkeates MDL Novice

    Oct 2, 2009
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    #10 johnkeates, Dec 6, 2010
    Last edited by a moderator: Apr 20, 2017
    Which modification is needed for the patch to work on xen-4.0.0 ? Im on Debian Squeeze, the first hunk fails, probably because slic.h is missing?
    Fixed it.
    You grab the xen sources, like
    Code:
    apt-get source xen-tools
    whichever version you use.

    Then get all the dependencies:
    Code:
    apt-get build-dep xen-tools
    so you can actually build the thing.

    Next, get the build stuff if you don't have it. Theese are always good to have:
    Code:
    apt-get install kernel-package build-essential
    Then get to ur xen source, xen-4.0.0/tools/firmware/hvmloader/acpi/ and start messing with inserting a slic the REAL way.

    Start with slic.h.

    slic.h is a file, consisting of a simple c data file, with the slic bin inside it. The BIN is a regular BIOS modding bin, as it just contains the SLIC.
    Code:
    xxd -i ~/HPQOEM.SLIC-CPC.bin | grep -v len | sed 's/unsigned char.*/unsigned char SLIC[] = {/' > slic.h
    This created the slic file for make.

    Next, you need to set the marker etc in the acpi2 file, in the OEM fields
    Code:
    sed -i -e 's/#define ACPI_OEM_ID.*"Xen"/#define ACPI_OEM_ID "HPQOEM"/' acpi2_0.h
    sed -i -e 's/#define ACPI_OEM_TABLE_ID.*"HVM"/#define ACPI_OEM_TABLE_ID "SLIC-CPC"/' acpi2_0.h
    #this will work, but manual editing will work too - mind this, you might need to set the creator too, if you take a slic with creator data
    
    So get a bunch of bins from the pages on this forum, stick it in the slic.h header file, and make sure to edit the acpi2_0.h header as well.
    Next, create the function that actually creates the table;

    Code:
    /* SLIC */
    memcpy(&buf[offset], SLIC, sizeof(SLIC));
    table_ptrs[nr_tables++] = (unsigned long)&buf[offset];
    offset += align16(sizeof(SLIC));
    
    Which is in build.c and as such file is just a source file, you can edit it by hand. Patch files are nice, manual handiwork is better.
    The code is supposed to be inside the function "construct_secondary_tables" at the end, just before:
    Code:
    table_ptrs[nr_tables] = 0;
         return align16(offset);
    
    Now, this is simple, just go to the xen source root of your distro, and do a 'make tools'. For me that failed after xc couldn't build something python related, but that doesn't matter, you only need the hvmloader.
    It's in dist/install/usr/lib/xen-/boot. Copy it somewhere, and load your HVM guests up with it, and you have a BIOS with a SLIC 2.1. !

    []hxxp://image.bayimg.com/mabehaadd.jpg[]

    I actually had some information found on a random italian forum [hxxp://forum.italianzone.eu/software-sistemi-operativi-programmazione-36/howto-adding-slic-table-xenserver-hvms-12778/?langid=1] which explained a few of the manual actions. Now, I don't speak italian, and I can't translate, but you can see from the code how it works.


    If I find the time, or if someone has a question, I can make a more elaborate how-to.
     
  10. fagus

    fagus MDL Novice

    May 12, 2009
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    #11 fagus, Feb 25, 2011
    Last edited by a moderator: Apr 20, 2017
    doesn't work for me

    first of all, I would like to thank you for your detailed post.
    I have a few questions...

    you ment: xen, not xen-tools right?

    My actual problem:
    when i try to build the whole thing, i get the following error:
    Code:
    build.c: In function âconstruct_secondary_tablesâ:
    build.c:241: error: âSLICâ undeclared (first use in this function)
    build.c:241: error: (Each undeclared identifier is reported only once
    build.c:241: error: for each function it appears in.)
    make[8]: *** [build.o] Error 1
    
    241 is the newly inserted line
    I just don't know where I should have declared SLIC...
     
  11. l37

    l37 MDL Novice

    Oct 23, 2009
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    #12 l37, Mar 20, 2011
    Last edited by a moderator: Apr 20, 2017
    @fagus: did you insert the following line in 'build.c':
    Code:
    #include "slic.h"
    Thats needed to include the file correctly.
     
  12. stalks

    stalks MDL Novice

    Jan 11, 2011
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    I have followed the instructions and created hvmloader.slic. It compiled fine, etc.

    When I use it as the kernel for the hvm it will boot okay, and with a Server 2008 R2 setup CD, I see the first "Windows is loading files" part, and the progress bar but at the point where it is about to load the graphical setup, I just get a black screen.

    With the standard hvmloader it boots okay, and loads setup.

    Any ideas?

    Debian Squeeze, Xen 4.0.1.
     
  13. John_peterson

    John_peterson MDL Novice

    Jan 2, 2012
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    I really appreciate your efforts.
     
  14. fbifido

    fbifido MDL Member

    Jun 6, 2007
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    Has anyone mod Xenserver 6 yet?
     
  15. zimbo

    zimbo MDL Novice

    Oct 20, 2010
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    спасибо большое за пост
    использую CentOS:
    cat /etc/redhat-release
    CentOS release 5.7 (Final)

    вывод xentop:
    xentop - Xen 3.1.2-274.18.1.el5

    сырцы зена скачал с:
    hххp://vault.centos.org/
    мои из 5.7
    пакет:
    hxxp://vault.centos.org/5.7/updates/SRPMS/xen-3.0.3-132.el5_7.2.src.rpm

    то, что пришлось доставить для компиляции:
    yum install transfig
    yum install libidn-devel
    yum install zlib-devel
    yum install texi2html
    yum install SDL-devel
    yum install curl-devel
    yum install libX11-devel
    yum install python-devel
    yum install tetex-latex
    yum install tetex-latex
    yum install ncurses-devel
    yum install gtk2-devel
    yum install libaio-devel
    yum install stubs-32
    yum install glibc-devel
    yum install glibc-devel
    yum install pciutils-devel
    yum install e4fsprogs-devel
    yum install xz-devel
    yum install bzip2-devel

    автором предложен архив в котором нет самого бинарника(слика), взял его отдельно
    на базе предложенной статьи всё получилось успешно, но не понял только как и где взять правильный XSDT RSDT если я не хочу использовать от HP
    sed -i -e 's/#define ACPI_OEM_ID.*"Xen"/#define ACPI_OEM_ID "HPQOEM"/' acpi2_0.h
    sed -i -e 's/#define ACPI_OEM_TABLE_ID.*"HVM"/#define ACPI_OEM_TABLE_ID "SLIC-CPC"/' acpi2_0.h

    извините но с английским очень плохо :)
     
  16. millbarge

    millbarge MDL Novice

    Mar 31, 2012
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    #17 millbarge, Jul 22, 2012
    Last edited by a moderator: Apr 20, 2017
    This has changed slightly in xen 4.1: The code to insert in build.c is:

    Code:
         /* SLIC */
        unsigned char *slc;
        slc = mem_alloc(sizeof(SLIC), 16);
        if (!slc) return -1;
        memcpy(slc, SLIC, sizeof(SLIC));
        table_ptrs[nr_tables++] = (unsigned long)slc;
     
    and it should be placed in the construct_secondary_tables function just above:
    Code:
         table_ptrs[nr_tables] = 0;
        return nr_tables;
     
    Actually, I declared the variable slc at the start of the construct_secondary_tables function, but that should not matter. The rest of the instructions should remain the same. Don't forget to add #include "slic.h".
     
  17. Scopeman

    Scopeman MDL Novice

    Jul 29, 2009
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    Hiho,

    here is a working hvmloader with dell slic 2.1 for Debian Squeeze and Xen 4.0.1.

    bayimg.dot.com/caaJaaaeF

    datafilehost.dot.com/download-634615a0.html
     
  18. cyrozap

    cyrozap MDL Novice

    May 29, 2012
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    Hello, everyone! This is my first time posting here, so I thought I'd make it good! I noticed that no one has posted an up-to-date hvmloader yet, so I've decided to post the one I just compiled. I built it on Ubuntu 12.04 using the Xen 4.1.3 source tarball. This file is tested to (mostly) work on Xen Cloud Platform 1.6 (build 61002c) with Xen 4.1.3. I have no idea about any other operating systems, but it should just be a drop-in replacement for any Xen installation that's using Xen 4.1.3. I used a Dell SLIC 2.1 table so you'll need a Dell SLIC certificate, but those are easy to find.

    Here's the link to the file: bit.cur.lv/hvmloader

    Current issues:
    • VM shutdown does not always work properly, so a forced shutdown may be required in those instances.
    • The CPU sometimes spontaneously gets reported as "unplugged".
     
  19. Xerxies

    Xerxies MDL Novice

    Dec 9, 2009
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    Is anyone maintaining this still?

    I would be interested in a slic 2.2 bios for xen to use with server 2012; i'm using XCP 1.6

    It was done with a Dell bios for VMware here

    forums.mydigitallife.net/threads/36721-Windows-Server-2012-OEM-SLP-keys/page3