Embedded Security Subsystem - Revision history

Bugmenot2: added category

2021-01-22T15:03:25Z

added category

2016-07-06T15:24:40Z

‎External Sources

2010-04-12T10:27:47Z

‎TCG TPM 1.2

2010-03-26T18:41:50Z

‎IBM Embedded Security Subsystem 2.0

2010-03-26T18:41:37Z

‎IBM Embedded Security Subsystem 2.0

2010-03-11T09:58:02Z

2010-03-11T09:55:53Z

‎Linux Support

2010-03-11T09:55:01Z

‎Trusted Computing Group TPM 1.2

2010-03-11T09:52:04Z

‎Linux Support

2010-03-11T09:36:00Z

‎Embedded Security Subsystem 2.0

@@ Line 253: / Line 253: @@
 [[Category:Glossary]]
 [[Category:Trusted Computing]]
 ==External Sources==

@@ Line 260: / Line 260: @@
 *[http://www.research.ibm.com/gsal/tcpa/ IBM Research TCPA resources page]
 *[http://sourceforge.net/projects/trustedgrub/ Trusted Grub]
-*[https://www.grounation.org/index.php?post/2008/07/04/8-how-to-use-a-tpm-with-linux User-friendly HOWTO on using TPM under Linux]
+*[https://www.grounation.org/index.php?post/2008/07/04/8-how-to-use-a-tpm-with-linux User-friendly HOWTO on using TPM under Linux] - Warning: This domain is currenly parked and hosting a linkfarm. (Jul 6, 2016)

@@ Line 245: / Line 245: @@
 '''Integrated in chipset'''
 *ThinkPad {{R400}}, {{R500}}
 *ThinkPad {{T400}}, {{T400s}}, {{T410}}, {{T410i}}, {{T410s}}, {{T410si}}, {{T500}}, {{T510}}, {{T510i}}

@@ Line 230: / Line 230: @@
 *ThinkPad {{R51}}
 *ThinkPad {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}
-*ThinkPad {{X31}, {{X32}}, {{X40}}, {{X41}}, {{X41 Tablet}}
+*ThinkPad {{X31}}, {{X32}}, {{X40}}, {{X41}}, {{X41 Tablet}}
 *ThinkPad {{Z60m}}, {{Z60t}}

@@ Line 225: / Line 225: @@
 '''unknown chip'''
 *ThinkPad {{R32}}, {{R40}}, {{R50}}, {{R50p}}
-*ThinkPad {{X30}}, {{X31}}
+*ThinkPad {{X30}}
 '''Atmel 97SC3201'''
 *ThinkPad {{R51}}
 *ThinkPad {{T40}}, {{T40p}}, {{T41}}, {{T41p}}, {{T42}}, {{T42p}}
-*ThinkPad {{X32}}, {{X40}}, {{X41}}, {{X41 Tablet}}
+*ThinkPad {{X31}, {{X32}}, {{X40}}, {{X41}}, {{X41 Tablet}}
 *ThinkPad {{Z60m}}, {{Z60t}}

@@ Line 12: / Line 12: @@
 |}
-{{NOTE|Some ThinkPads have the TPM chip integrated into the SuperIO chip, and in a not-so-distant future, the TPM will be integrated into the chipset. Don't let the picture fool you...}}
+{{NOTE|Current ThinkPads have the TPM chip integrated into the SuperIO chip, or integrated into the chipset. Don't let the picture fool you...}}
 ==Trusted or Treacherous?==

@@ Line 25: / Line 25: @@
 ==Linux Support==
 There are three main drivers that support most of the ThinkPads
-* tpm_atmel - for those ThinkPads with Atmel chips
+* tpm_atmel - for those ThinkPads with older Atmel 97SC3201 chips
 * tpm_nsc - for the ThinkPad T43/P and R52
-* tpm_tis - for recent ThinkPads where the TPM function is part of the Intel chipset
+* tpm_tis - for recent ThinkPads with TPM 1.2
 In addition you will need some something like [http://sourceforge.net/projects/trousers TrouSerS], which your distribution may have packaged as '''tpm-tools'''.

@@ Line 61: / Line 61: @@
 Since the *60 series Thinkpads all new models have had TCG TPM 1.2 compliant chips. During the *60 series this was part of an ATMEL chip, in later ThinkPads this is actually part of the Intel chipset itself.
-Atmel chips are supported by the tpm_atmel kernel module, while later ThinkPads use tpm_tis
+Regardless if it is part of the Atmel chip or the Intel chipset, these TPM 1.2 devices are supported by the tpm_tis kernel module
 ==Clearing/Reseting the Embedded Security Subsystem==

@@ Line 24: / Line 24: @@
 ==Linux Support==
-Two linux drivers are available, a [[tpm|classical one]] and a [[tpmdd|newer one]].
+There are three main drivers that support most of the ThinkPads
-Coverage of functionality of the first is unknown so far, the second is part of a bigger project aiming to provide a usable security framework.
+* tpm_atmel - for those ThinkPads with Atmel chips
-David Stafford (one of the developers of the tpm code at IBM) on March 10, 2005 sent me the most recent version of the tpm-kml code. With his permission, I quote his email:
+In addition you will need some something like [http://sourceforge.net/projects/trousers TrouSerS], which your distribution may have packaged as '''tpm-tools'''.
 ==Versions & Features==

@@ Line 81: / Line 81: @@
 *TCG compliant
-National Semiconductor TPMs are likely part of the Winbond SuperIO chip (e.g. in a {{T43}}).
+ThinkPads with Atmel chips are supported by the tpm_atmel kernel module. The few ThinkPads with National Semiconductor chips (T43/p and R52) are supported by the tpm_nsc kernel module.
 === Trusted Computing Group TPM 1.2 ===