Re: [TrouSerS-users] TPM activation and tcsd problems (GetCapability failed with result = 0x1c)

[Rajiv A. <sr...@li...>]

Hi Manuel,

This 0x1c error code indicates the TPM selftest failed and has shutdown, according to the spec, you need to reboot the machine. By reboot here I mean a full power cycle, you must shutdown it, and then power it on again. Have you returned from a suspend?

Thanks,
Rajiv Andrade
Security Development
IBM Linux Technology Center



On Jul 8, 2010, at 5:40 AM, Manuel Jeckelmann wrote:

> Hi everyone, 
> 
> I am trying to get started with TPM on my Laptop. Unfortunately there seem to be some problems and I cannot figure out what they are related to.
> 
> My hardware is an Acer TravelMate 6293 with an Infineon TPM and with BIOS v1.38. On top of it I use Ubuntu Linux 10.4 (kernel 2.6.23-23).
> 
> Here are the facts:
> - When I activated and enabled my TPM in BIOS, it still tells me it is de-activated the next time I enter BIOS.
> - After boot-up the following modules get loaded: tpm_bios, tpm and tpm_tis. 
> - tpm_tis leaves the following message in my message log (dmesg): "tpm_tis 00:0d: 1.2 TPM (device-id 0xB, rev-id 16)". 
> - Meanwhile, in /dev/ I have a device called "tpm0".
> - When I try to start "tcsd -f" the following is printed out (I compiled trousers with debug output activated):
> -------
> TCSD tcsd_conf.c:94 platform_class_list_append: platform_class_list_append start:
> TCSD tcsd_conf.c:125 platform_class_list_append: Platform Class Added.
> TCSD TCS tcsi_caps_tpm.c:43 Entering Get Cap
> TCSD TCS tcs_context.c:186 Success: 30000000 is an Internal Context
> To TPM: 00 C1 00 00 00 12 00 00 00 65 00 00 00 1A 00 00 
> To TPM: 00 00 
> TCSD TDDL tddl.c:171 Calling write to driver
> TCSD TDDL tddl.c:188 ioctl: (25) Inappropriate ioctl for device
> TCSD TDDL tddl.c:189 Falling back to Read/Write device support.
> From TPM: 00 C4 00 00 00 0A 00 00 00 1C 
> LOG_RETERR TPM tcsi_caps_tpm.c:55: 0x1c
> TCSD TCS ERROR: tcs_caps.c:191 TCS GetCapability failed with result = 0x1c
> -------
> - It is clear that tpm_version won't work either, since it depends on tcsd.
> - (I have exactly the same output when I unload and re-load the tpm_tis modules with the force=1 and interrupts=0 flags)
> 
> So, if anyone knows what could be the issue I would be very graceful if that one could share it with me. :) Thanks!
> 
> Best,
> -Maennel
> 
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