linux-toradex.git/drivers/char/tpm/tpm.h, branch v6.11

tpm: Switch to new Intel CPU model defines

2024-06-05T01:55:04+00:00

New CPU #defines encode vendor and family as well as model.

Link: https://lore.kernel.org/all/20240520224620.9480-4-tony.luck@intel.com/
Signed-off-by: Tony Luck 
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen

tpm: Add NULL primary creation

2024-05-09T19:30:51+00:00

The session handling code uses a "salted" session, meaning a session
whose salt is encrypted to the public part of another TPM key so an
observer cannot obtain it (and thus deduce the session keys).  This
patch creates and context saves in the tpm_chip area the primary key
of the NULL hierarchy for this purpose.

[jarkko@kernel.org: fixed documentation errors]
Signed-off-by: James Bottomley 
Reviewed-by: Jarkko Sakkinen 
Tested-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen

tpm: export the context save and load commands

2024-05-09T19:30:51+00:00

The TPM2 session HMAC and encryption handling code needs to save and
restore a single volatile context for the elliptic curve version of
the NULL seed, so export the APIs which do this for internal use.

Signed-off-by: James Bottomley 
Reviewed-by: Stefan Berger 
Reviewed-by: Jarkko Sakkinen 
Tested-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen

tpm: make all 'class' structures const

2023-08-05T06:31:41+00:00

Now that the driver core allows for struct class to be in read-only
memory, making all 'class' structures to be declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at load time.

Cc: Peter Huewe 
Cc: Jason Gunthorpe 
Cc: linux-integrity@vger.kernel.org
Suggested-by: Greg Kroah-Hartman 
Signed-off-by: Ivan Orlov 
Acked-by: Jarkko Sakkinen 
Link: https://lore.kernel.org/r/20230620144642.584926-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman

Merge tag 'tpmdd-v6.4-rc1-fix-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

2023-05-01T17:37:37+00:00

Pull tpm fix from Jarkko Sakkinen:
 "This fixes a critical bug in my first pull request.

  I fixed the cherry pick issue and tested with real hardare and
  libvirt/qemu plus swtpm"

* tag 'tpmdd-v6.4-rc1-fix-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: Re-enable TPM chip boostrapping non-tpm_tis TPM drivers

tpm: Re-enable TPM chip boostrapping non-tpm_tis TPM drivers

2023-04-28T13:06:36+00:00

TPM chip bootstrapping was removed from tpm_chip_register(), and it
was relocated to tpm_tis_core. This breaks all drivers which are not
based on tpm_tis because the chip will not get properly initialized.

Take the corrective steps:
1. Rename tpm_chip_startup() as tpm_chip_bootstrap() and make it one-shot.
2. Call tpm_chip_bootstrap() in tpm_chip_register(), which reverts the
   things  as tehy used to be.

Cc: Lino Sanfilippo 
Fixes: 548eb516ec0f ("tpm, tpm_tis: startup chip before testing for interrupts")
Reported-by: Pengfei Xu 
Link: https://lore.kernel.org/all/ZEjqhwHWBnxcaRV5@xpf.sh.intel.com/
Tested-by: Pengfei Xu 
Signed-off-by: Jarkko Sakkinen

Merge tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2023-04-27T18:53:57+00:00

Pull driver core updates from Greg KH:
 "Here is the large set of driver core changes for 6.4-rc1.

  Once again, a busy development cycle, with lots of changes happening
  in the driver core in the quest to be able to move "struct bus" and
  "struct class" into read-only memory, a task now complete with these
  changes.

  This will make the future rust interactions with the driver core more
  "provably correct" as well as providing more obvious lifetime rules
  for all busses and classes in the kernel.

  The changes required for this did touch many individual classes and
  busses as many callbacks were changed to take const * parameters
  instead. All of these changes have been submitted to the various
  subsystem maintainers, giving them plenty of time to review, and most
  of them actually did so.

  Other than those changes, included in here are a small set of other
  things:

   - kobject logging improvements

   - cacheinfo improvements and updates

   - obligatory fw_devlink updates and fixes

   - documentation updates

   - device property cleanups and const * changes

   - firwmare loader dependency fixes.

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits)
  device property: make device_property functions take const device *
  driver core: update comments in device_rename()
  driver core: Don't require dynamic_debug for initcall_debug probe timing
  firmware_loader: rework crypto dependencies
  firmware_loader: Strip off \n from customized path
  zram: fix up permission for the hot_add sysfs file
  cacheinfo: Add use_arch[|_cache]_info field/function
  arch_topology: Remove early cacheinfo error message if -ENOENT
  cacheinfo: Check cache properties are present in DT
  cacheinfo: Check sib_leaf in cache_leaves_are_shared()
  cacheinfo: Allow early level detection when DT/ACPI info is missing/broken
  cacheinfo: Add arm64 early level initializer implementation
  cacheinfo: Add arch specific early level initializer
  tty: make tty_class a static const structure
  driver core: class: remove struct class_interface * from callbacks
  driver core: class: mark the struct class in struct class_interface constant
  driver core: class: make class_register() take a const *
  driver core: class: mark class_release() as taking a const *
  driver core: remove incorrect comment for device_create*
  MIPS: vpe-cmp: remove module owner pointer from struct class usage.
  ...

tpm, tpm_tis: startup chip before testing for interrupts

2023-04-24T13:15:53+00:00

In tpm_tis_gen_interrupt() a request for a property value is sent to the
TPM to test if interrupts are generated. However after a power cycle the
TPM responds with TPM_RC_INITIALIZE which indicates that the TPM is not
yet properly initialized.
Fix this by first starting the TPM up before the request is sent. For this
the startup implementation is removed from tpm_chip_register() and put
into the new function tpm_chip_startup() which is called before the
interrupts are tested.

Signed-off-by: Lino Sanfilippo 
Tested-by: Jarkko Sakkinen 
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen

Merge 6.3-rc5 into driver-core-next

2023-04-03T07:33:30+00:00

We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.

Signed-off-by: Greg Kroah-Hartman

tpm: fix up the tpm_class shutdown_pre pointer when created

2023-03-17T14:16:45+00:00

Do not wait until long after the struct class has been created to set
the shutdown_pre pointer for the tpm_class, assign it right away.

This is the only in-kernel offender that tries to modify the
device->class pointer contents after it has been assigned to a device,
so fix that up by doing the function pointer assignment before it is
matched with the device.  Because of this, the patch should go through
the driver core tree to allow later changes to struct device to be
possible.

Cc: Peter Huewe 
Cc: Jarkko Sakkinen 
Cc: Jason Gunthorpe 
Cc: linux-integrity@vger.kernel.org
Reviewed-by: Jarkko Sakkinen 
Link: https://lore.kernel.org/r/20230313181843.1207845-10-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman