[U-Boot] [PATCH v2 00/28] dm: Convert TPM drivers to driver model

[Simon Glass]

This series adds driver model support for Trusted Platform Modules (TPMs).
These have a very simple interface and are configured via the device tree.

Two bus types are supported at present: I2C and LPC (Intel Low-Pin-Count).

Most drivers and users are converted over to driver model. The exception is
the Atmel TPM and its users.

The I2C driver has been cleaned up and simplified. It was ported from Linux
and was pretty hard to follow. This series includes patches to unify the
code, remove duplicated data structures and drop unnecessary indirection.

Also this series enables the TPM on all Chromebooks supported by upstream
U-Boot (snow, spring, nyan-big, pit, pi, link, panther) since some did not
have it fully enabled.

As before, the 'tpm' command can be used to implement TPM functionality. In
addition a 'tpmtest' command provides some basic TPM tests taken from
Chrome OS U-Boot. These are fairly rudimentary but are useful if you know
what you are doing.

Changes in v2:
- Add a 'TPM' menu in Kconfig
- Add new patch with a 'tpmtest' command
- Add new patch with functions to access flags and permissions
- Add tpm device tree node for panther also
- Correct error checking code in tpm_sendrecv_command()
- Correct error-checking code in report_return_code()
- Enable 'tpmtest' command for nyan
- Enhance uclass to support timeouts with new send()/recv() methods
- Implement the get_desc() method
- Include tpm.h header file instead of tis.h
- Move the timeout definitions into a new tpm_internal.h header
- Update cover letter to mention panther and the tpmtest command.
- Update driver for the new uclass interface
- Update driver for v2 TPM uclass which supports timeouts
- Use tpm_ prefix instead of tis_ for TPM functions

Simon Glass (28):
  tpm: Remove old pre-driver-model I2C code
  tpm: Drop two unused options
  tpm: Add Kconfig options for TPMs
  tpm: Convert board config TPM options to Kconfig
  tpm: Convert drivers to use SPDX
  tpm: Move the I2C TPM code into one file
  tpm: tpm_tis_i2c: Drop unnecessary methods
  tpm: tpm_tis_i2c: Drop struct tpm_vendor_specific
  tpm: tpm_tis_i2c: Merge struct tpm_dev into tpm_chip
  tpm: tpm_tis_i2c: Merge struct tpm into tpm_chip
  tpm: tpm_tis_i2c: Move definitions into the header file
  tpm: tpm_tis_i2c: Simplify init code
  tpm: tpm_tis_i2c: Use a consistent tpm_tis_i2c_ prefix
  tpm: tpm_tis_i2c: Tidy up delays
  dm: tpm: Add a uclass for Trusted Platform Modules
  dm: tpm: Convert the TPM command and library to driver model
  dm: i2c: Add a command to adjust the offset length
  tpm: Report tpm errors on the command line
  dm: tpm: sandbox: Convert TPM driver to driver model
  tpm: Check that parse_byte_string() has data to parse
  exynos: x86: dts: Add tpm nodes to the device tree for Chrome OS
    devices
  dm: tpm: Convert I2C driver to driver model
  dm: tpm: Convert LPC driver to driver model
  tpm: Add a 'tpm info' command
  tpm: Add functions to access flags and permissions
  dm: tpm: Add a 'tpmtest' command
  tpm: Enable 'tpmtest' command for Chrome OS boards with TPMs
  tegra: nyan: Enable TPM command and driver

 README                                             |   6 -
 arch/arm/dts/exynos5250-snow.dts                   |   9 +
 arch/arm/dts/exynos5250-spring.dts                 |   8 +
 arch/arm/dts/exynos5420-peach-pit.dts              |   6 +-
 arch/arm/dts/exynos5800-peach-pi.dts               |   6 +-
 arch/sandbox/dts/sandbox.dts                       |   4 +
 arch/x86/dts/chromebook_link.dts                   |   5 +
 arch/x86/dts/chromebox_panther.dts                 |   5 +
 common/Kconfig                                     |  22 +
 common/Makefile                                    |   1 +
 common/cmd_i2c.c                                   |  33 +
 common/cmd_tpm.c                                   | 100 ++-
 common/cmd_tpm_test.c                              | 565 +++++++++++++++++
 configs/chromebook_link_defconfig                  |   5 +
 configs/chromebox_panther_defconfig                |   5 +
 .../controlcenterd_36BIT_SDCARD_DEVELOP_defconfig  |   4 +
 configs/controlcenterd_36BIT_SDCARD_defconfig      |   4 +
 .../controlcenterd_TRAILBLAZER_DEVELOP_defconfig   |   4 +
 configs/controlcenterd_TRAILBLAZER_defconfig       |   4 +
 configs/coreboot-x86_defconfig                     |   5 +
 configs/nyan-big_defconfig                         |   5 +
 configs/peach-pi_defconfig                         |   5 +
 configs/peach-pit_defconfig                        |   5 +
 configs/sandbox_defconfig                          |   4 +
 configs/snow_defconfig                             |   5 +
 configs/spring_defconfig                           |   5 +
 drivers/tpm/Kconfig                                |  69 ++
 drivers/tpm/Makefile                               |   4 +-
 drivers/tpm/tpm-uclass.c                           | 133 ++++
 drivers/tpm/tpm.c                                  | 694 ---------------------
 drivers/tpm/tpm_atmel_twi.c                        |  15 +-
 drivers/tpm/tpm_internal.h                         | 287 +++++++++
 drivers/tpm/tpm_tis_i2c.c                          | 572 ++++++++---------
 drivers/tpm/{tpm_private.h => tpm_tis_i2c.h}       |  88 +--
 drivers/tpm/tpm_tis_lpc.c                          | 290 ++++-----
 drivers/tpm/tpm_tis_sandbox.c                      |  57 +-
 include/configs/controlcenterd.h                   |   7 -
 include/configs/efi-x86.h                          |   2 -
 include/configs/exynos5-common.h                   |   7 -
 include/configs/x86-common.h                       |   2 -
 include/dm/uclass-id.h                             |   1 +
 include/fdtdec.h                                   |   2 -
 include/tis.h                                      |   3 +
 include/tpm.h                                      | 243 +++++++-
 lib/Kconfig                                        |  10 +
 lib/fdtdec.c                                       |   2 -
 lib/tpm.c                                          |  82 ++-
 47 files changed, 2102 insertions(+), 1298 deletions(-)
 create mode 100644 common/cmd_tpm_test.c
 create mode 100644 drivers/tpm/tpm-uclass.c
 delete mode 100644 drivers/tpm/tpm.c
 create mode 100644 drivers/tpm/tpm_internal.h
 rename drivers/tpm/{tpm_private.h => tpm_tis_i2c.h} (54%)

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2.5.0.457.gab17608