linux.git/drivers/char/tpm/Makefile, branch v3.13

tpm: Add support for Atmel I2C TPMs

2013-10-22T17:43:07+00:00

This is based on the work of Teddy Reed  published
on GitHub:
 https://github.com/theopolis/tpm-i2c-atmel.git
 34894b988b67e0ae55088d6388e77b0dbf10c07d

That driver was never merged, I have taken it as a starting port,
forward ported, tested and revised the driver:
 - Make it broadly textually similar to the Infineon and Nuvoton I2C
   driver
 - Place everything in a format suitable for mainline inclusion
 - Use high level I2C functions i2c_master_send and
   i2c_master_recv for data xfer
 - Use the timeout system from the core code, by faking out a status
   register
 - Only I2C transfer the number of bytes in the reply, not a fixed
   message size.
 - checkpatch cleanups
 - Testing on ARM Kirkwood, with this device tree, using a
   AT97SC3204T-X1A180
        tpm@29 {
                compatible = "atmel,at97sc3204t";
                reg = <0x29>;
        };

Signed-off-by: Teddy Reed 
[jgg: revised and tested]
Signed-off-by: Jason Gunthorpe 
[phuewe: minor whitespace changes]

Signed-off-by: Peter Huewe

tpm: Add support for the Nuvoton NPCT501 I2C TPM

2013-10-22T17:43:04+00:00

This chip is/was also branded as a Winbond WPCT301.

Originally written by Dan Morav  and posted to LKML:
https://lkml.org/lkml/2011/9/7/206

The original posting was not merged, I have taken it as a
starting point, forward ported, tested and revised the driver:
 - Rework interrupt handling to work properly with level triggered
   interrupts. The old version just locked up.
 - Synchronize various items with Peter Huewe's Infineon driver:
    * Add durations/timeouts sysfs calls
    * Remove I2C device auto-detection
    * Don't fiddle with chip->release
    * Call tpm_dev_vendor_release in the probe error path
    * Use MODULE_DEVICE_TABLE for the I2C ids
    * Provide OF compatible strings for DT support
    * Use SIMPLE_DEV_PM_OPS
    * Use module_i2c_driver
 - checkpatch cleanups
 - Testing on ARM Kirkwood with GPIO interrupts, with this device tree:
	tpm@57 {
                compatible = "nuvoton,npct501";
                reg = <0x57>;
                interrupt-parent = <&gpio1>;
                interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
        };

Signed-off-by: Dan Morav 
[jgg: revised and tested]
Signed-off-by: Jason Gunthorpe 
[phuewe: minor whitespace changes, fixed module name in kconfig]

Signed-off-by: Peter Huewe

tpm: Merge the tpm-bios module with tpm.o

2013-10-22T17:43:01+00:00

Now that we can have multiple .c files in the tpm module there is
no reason for tpm-bios.

tpm-bios exported several functions: tpm_bios_log_setup,
tpm_bios_log_teardown, tpm_add_ppi, and tpm_remove_ppi.

They are only used by tpm, and if tpm-bios is built then
tpm will unconditionally require them. Further, tpm-bios does
nothing on its own, it has no module_init function.

Thus we remove the exports and merge the modules to simplify things.

The Makefile conditions are changed slightly to match the code,
tpm_ppi is always required if CONFIG_ACPI is set.

Signed-off-by: Jason Gunthorpe

tpm: Rename tpm.c to tpm-interface.c

2013-10-22T17:42:51+00:00

This is preparation for making the tpm module multi-file. kbuild does
not like having a .c file with the same name as a module. We wish to
keep the tpm module name so that userspace doesn't see this change.

tpm-interface.c is chosen because the next several commits in the series
migrate items into tpm-sysfs.c, tpm-dev.c and tpm-class.c. All that will
be left is tpm command processing and interfacing code.

Signed-off-by: Jason Gunthorpe

drivers/tpm: add xen tpmfront interface

2013-08-09T14:57:06+00:00

This is a complete rewrite of the Xen TPM frontend driver, taking
advantage of a simplified frontend/backend interface and adding support
for cancellation and timeouts.  The backend for this driver is provided
by a vTPM stub domain using the interface in Xen 4.3.

Signed-off-by: Daniel De Graaf 
Acked-by: Matthew Fioravante 
Reviewed-by: Konrad Rzeszutek Wilk 
Acked-by: Peter Huewe 
Reviewed-by: Peter Huewe 
Signed-off-by: Konrad Rzeszutek Wilk

TPM: STMicroelectronics ST33 I2C BUILD STUFF

2013-02-05T15:38:23+00:00

 * STMicroelectronics version 1.2.0, Copyright (C) 2010
 * STMicroelectronics comes with ABSOLUTELY NO WARRANTY.
 * This is free software, and you are welcome to redistribute it
 * under certain conditions.

This is the driver for TPM chip from ST Microelectronics.

If you have a TPM security chip from STMicroelectronics working with
an I2C, in menuconfig or .config choose the tpm driver on
device --> tpm and activate the protocol of your choice before compiling
the kernel.
The driver will be accessible from within Linux.

Tested on linux x86/x64, beagleboard REV B & XM REV C and CHROMIUM OS

Signed-off-by: Mathias Leblanc 
Signed-off-by: Kent Yoder

driver: add PPI support in tpm driver

2012-08-22T21:23:42+00:00

The Physical Presence Interface enables the OS and the BIOS to cooperate and
provides a simple and straightforward platform user experience for
administering the TPM without sacrificing security.

V2: separate the patch out in a separate source file,
    add #ifdef CONFIG_ACPI so it compiles out on ppc,
    use standard error instead of ACPI error as return code of show/store fns.
V3: move #ifdef CONFIG_ACPI from .c file to .h file.
V4: move tpm_ppi code from tpm module to tpm_bios module.
V5: modify sys_add_ppi() so that ppi_attr_grp doesn't need to be exported

Signed-off-by: Xiaoyan Zhang 
Signed-off-by: Kent Yoder

drivers/char/tpm: Add securityfs support for event log

2012-08-22T21:22:47+00:00

This patch retrieves the event log data from the device tree
during file open. The event log data will then displayed through
securityfs.

Signed-off-by: Ashley Lai 
Signed-off-by: Kent Yoder

drivers/char/tpm: Add new device driver to support IBM vTPM

2012-08-22T21:21:45+00:00

This patch adds a new device driver to support IBM virtual TPM
(vTPM) for PPC64.  IBM vTPM is supported through the adjunct
partition with firmware release 740 or higher.  With vTPM
support, each lpar is able to have its own vTPM without the
physical TPM hardware.

This driver provides TPM functionalities by communicating with
the vTPM adjunct partition through Hypervisor calls (Hcalls)
and Command/Response Queue (CRQ) commands.

Signed-off-by: Ashley Lai 
Signed-off-by: Kent Yoder

tpm: modularize event log collection

2012-08-22T16:11:25+00:00

Break ACPI-specific pieces of the event log handling into their own file
and create tpm_eventlog.[ch] to store common event log handling code.
This will be required to integrate future event log sources on platforms
without ACPI tables.

Signed-off-by: Kent Yoder