[Linux-ima-user] Support for Intel TPM chips in IMA/kernel

[Lavina J. <lav...@gm...>]

Hi,

I have earlier compiled IMA into linux kernel 2.6.24 (Ubuntu 8.04) on a
lenovo X61. It had Atmel TPM chip. Compiling TPM into the kernel worked fine
and I could access TPM through trousers and tpm-tools in the compiled
kernel.

Now I am working on another machine which is lenovo X200. I installed Ubuntu
8.04 on it. Since it has an older kernel (2.6.24), I applied the older ima
patch that I had used on my previous machine. But it did not recognize TPM
chip.
Output of dmesg is as follows:
IMA (TPM/BYPASS - no TPM chip found)

I am not sure of the manufacturer of TPM. There isn't any entry for HID of
TPM device in ACPI table. It lists something like this:
Device (TPM)
{
      Method (HID, 0, NotSerialized)
      {
            TPHY(0x00)
             If(LEqual(TPMV, 0x01))
             {
                         Return (0x0201D824)
              }
              ......
              ......
              Return ("INTC0102")
       }
       .............
}

I suspect that it is an Intel TPM chip. Does the latest IMA patch and kernel
(2.6.27 in Ubuntu 8.10) have support for Intel TPM chip? Any suggestions for
getting things working with an Intel TPM chip would be greatly appreciated.

Thanks,
Lavina

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