Eric Lee / smarc-fsl-linux-kernel

19 Jun, 2010

1 commit

  • fd699c765   x86, olpc: Add support for calling into OpenFirmware ... Browse Code »

    Add support for saving OFW's cif, and later calling into it to run OFW
    commands. OFW remains resident in memory, living within virtual range
    0xff800000 - 0xffc00000. A single page directory entry points to the
    pgdir that OFW actually uses, so rather than saving the entire page
    table, we grab and install that one entry permanently in the kernel's
    page table.

    This is currently only used by the OLPC XO. Note that this particular
    calling convention breaks PAE and PAT, and so cannot be used on newer
    x86 hardware.

    Signed-off-by: Andres Salomon
    LKML-Reference:
    Signed-off-by: H. Peter Anvin

    Andres Salomon
     

22 Jul, 2009

1 commit

  • 316253406   x86, intel_txt: Intel TXT boot support ... Browse Code »

    This patch adds kernel configuration and boot support for Intel Trusted
    Execution Technology (Intel TXT).

    Intel's technology for safer computing, Intel Trusted Execution
    Technology (Intel TXT), defines platform-level enhancements that
    provide the building blocks for creating trusted platforms.

    Intel TXT was formerly known by the code name LaGrande Technology (LT).

    Intel TXT in Brief:
    o Provides dynamic root of trust for measurement (DRTM)
    o Data protection in case of improper shutdown
    o Measurement and verification of launched environment

    Intel TXT is part of the vPro(TM) brand and is also available some
    non-vPro systems. It is currently available on desktop systems based on
    the Q35, X38, Q45, and Q43 Express chipsets (e.g. Dell Optiplex 755, HP
    dc7800, etc.) and mobile systems based on the GM45, PM45, and GS45
    Express chipsets.

    For more information, see http://www.intel.com/technology/security/.
    This site also has a link to the Intel TXT MLE Developers Manual, which
    has been updated for the new released platforms.

    A much more complete description of how these patches support TXT, how to
    configure a system for it, etc. is in the Documentation/intel_txt.txt file
    in this patch.

    This patch provides the TXT support routines for complete functionality,
    documentation for TXT support and for the changes to the boot_params structure,
    and boot detection of a TXT launch. Attempts to shutdown (reboot, Sx) the system
    will result in platform resets; subsequent patches will support these shutdown modes
    properly.

    Documentation/intel_txt.txt | 210 +++++++++++++++++++++
    Documentation/x86/zero-page.txt | 1
    arch/x86/include/asm/bootparam.h | 3
    arch/x86/include/asm/fixmap.h | 3
    arch/x86/include/asm/tboot.h | 197 ++++++++++++++++++++
    arch/x86/kernel/Makefile | 1
    arch/x86/kernel/setup.c | 4
    arch/x86/kernel/tboot.c | 379 +++++++++++++++++++++++++++++++++++++++
    security/Kconfig | 30 +++
    9 files changed, 827 insertions(+), 1 deletion(-)

    Signed-off-by: Joseph Cihula
    Signed-off-by: Shane Wang
    Signed-off-by: Gang Wei
    Signed-off-by: H. Peter Anvin

    Joseph Cihula
     

07 Jan, 2009

1 commit

23 Jul, 2008

1 commit