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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-04-21 20:02:51 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-04-21 20:02:51 +0100 |
| commit | 45608654aa63ca2b311d6cb761e1522f2128e00e (patch) | |
| tree | 365a35df65cfc24400576ce0e2cb6a7a1718011c /docs | |
| parent | 1093893f07debd06a4f2aaf677b6e90997c9245f (diff) | |
| parent | 9d81aa3c0fe7480d722517f69e1bcb4aeaaf859c (diff) | |
| download | qemu-45608654aa63ca2b311d6cb761e1522f2128e00e.zip qemu-45608654aa63ca2b311d6cb761e1522f2128e00e.tar.gz qemu-45608654aa63ca2b311d6cb761e1522f2128e00e.tar.bz2 | |
Merge tag 'pull-tpm-2023-04-20-1' of https://github.com/stefanberger/qemu-tpm into staging
Merge tpm 2023/04/20 v1
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# gpg: Signature made Thu 20 Apr 2023 01:20:26 PM BST
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# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.com>" [unknown]
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# Primary key fingerprint: B818 B9CA DF90 89C2 D5CE C66B 75AD 6580 2A0B 4211
* tag 'pull-tpm-2023-04-20-1' of https://github.com/stefanberger/qemu-tpm:
qtest: Add a test case for TPM TIS I2C connected to Aspeed I2C controller
qtest: Move tpm_util_tis_transmit() into tpm-tis-utils.c and rename it
qtest: Add functions for accessing devices on Aspeed I2C controller
tests/avocado/aspeed: Add TPM TIS I2C test
tpm: Add support for TPM device over I2C bus
tpm: Extend common APIs to support TPM TIS I2C
docs: Add support for TPM devices over I2C bus
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/specs/tpm.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/docs/specs/tpm.rst b/docs/specs/tpm.rst index 535912a..efe124a 100644 --- a/docs/specs/tpm.rst +++ b/docs/specs/tpm.rst @@ -21,12 +21,16 @@ QEMU files related to TPM TIS interface: - ``hw/tpm/tpm_tis_common.c`` - ``hw/tpm/tpm_tis_isa.c`` - ``hw/tpm/tpm_tis_sysbus.c`` + - ``hw/tpm/tpm_tis_i2c.c`` - ``hw/tpm/tpm_tis.h`` Both an ISA device and a sysbus device are available. The former is used with pc/q35 machine while the latter can be instantiated in the Arm virt machine. +An I2C device support is also provided which can be instantiated in the Arm +based emulation machines. This device only supports the TPM 2 protocol. + CRB interface ------------- @@ -348,6 +352,23 @@ In case an Arm virt machine is emulated, use the following command line: -drive if=pflash,format=raw,file=flash0.img,readonly=on \ -drive if=pflash,format=raw,file=flash1.img +In case a ast2600-evb bmc machine is emulated and you want to use a TPM device +attached to I2C bus, use the following command line: + +.. code-block:: console + + qemu-system-arm -M ast2600-evb -nographic \ + -kernel arch/arm/boot/zImage \ + -dtb arch/arm/boot/dts/aspeed-ast2600-evb.dtb \ + -initrd rootfs.cpio \ + -chardev socket,id=chrtpm,path=/tmp/mytpm1/swtpm-sock \ + -tpmdev emulator,id=tpm0,chardev=chrtpm \ + -device tpm-tis-i2c,tpmdev=tpm0,bus=aspeed.i2c.bus.12,address=0x2e + + For testing, use this command to load the driver to the correct address + + echo tpm_tis_i2c 0x2e > /sys/bus/i2c/devices/i2c-12/new_device + In case SeaBIOS is used as firmware, it should show the TPM menu item after entering the menu with 'ESC'. |