When the management layer queries a binary built using --disable-tpm
for TPM devices, it gets confused by getting empty responses:
{ "execute": "query-tpm" }
{
"return": [
]
}
{ "execute": "query-tpm-types" }
{
"return": [
]
}
{ "execute": "query-tpm-models" }
{
"return": [
]
}
To make it clearer by returning an error:
- Make the TPM QAPI schema conditional
All of tpm.json is now 'if': 'defined(CONFIG_TPM)'.
- Adapt the HMP command
- Remove stubs which became unnecessary
The management layer now gets a 'CommandNotFound' error:
{ "execute": "query-tpm" }
{
"error": {
"class": "CommandNotFound",
"desc": "The command query-tpm has not been found"
}
}
Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
The various schemas included in QEMU use a JSON-based format which
is, however, strictly speaking not valid JSON.
As a consequence, when vim tries to apply syntax highlight rules
for JSON (as guessed from the file name), the result is an unreadable
mess which mostly consist of red markers pointing out supposed errors
in, well, pretty much everything.
Using Python syntax highlighting produces much better results, and
in fact these files already start with specially-formatted comments
that instruct Emacs to process them as if they were Python files.
This commit adds the equivalent special comments for vim.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20200729185024.121766-1-abologna@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
A JSON block comment like this:
Returns: nothing on success
If @node is not a valid block device, DeviceNotFound
If @name is not found, GenericError with an explanation
renders like this:
Returns: nothing on success If node is not a valid block device,
DeviceNotFound If name is not found, GenericError with an explanation
because whitespace is not significant.
Use an actual bulleted list, so that the formatting is correct.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20200213175647.17628-14-peter.maydell@linaro.org>
Message-Id: <20200213175647.17628-15-peter.maydell@linaro.org>
Message-Id: <20200213175647.17628-16-peter.maydell@linaro.org>
[Three commits squashed into one]
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Implement support for TPM on ppc64 by implementing the vTPM CRQ interface
as a frontend. It can use the tpm_emulator driver backend with the external
swtpm.
The Linux vTPM driver for ppc64 works with this emulation.
This TPM emulator also handles the TPM 2 case.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20200121152935.649898-4-stefanb@linux.ibm.com>
[dwg: Use device_class_set_props(), tweak Kconfig]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Let's break the line before 'data'. While at it, improve a bit
indentation/spacing. (I removed some alignment which are not helping
much readability and become quickly inconsistent)
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20181208111606.8505-26-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
tpm_crb is a device for TPM 2.0 Command Response Buffer (CRB)
Interface as defined in TCG PC Client Platform TPM Profile (PTP)
Specification Family “2.0” Level 00 Revision 01.03 v22.
The PTP allows device implementation to switch between TIS and CRB
model at run time, but given that CRB is a simpler device to
implement, I chose to implement it as a different device.
The device doesn't implement other locality than 0 for now (my laptop
TPM doesn't either, so I assume this isn't so bad)
Tested with some success with Linux upstream and Windows 10, seabios &
modified ovmf. The device is recognized and correctly transmit
command/response with passthrough & emu. However, we are missing PPI
ACPI part atm.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This change introduces a new TPM backend driver that can communicate with
swtpm(software TPM emulator) using unix domain socket interface. QEMU talks to
the TPM emulator using QEMU's socket-based chardev backend device.
Swtpm uses two Unix sockets for communications, one for plain TPM commands and
responses, and one for out-of-band control messages. QEMU passes the data
socket to be used over the control channel.
The swtpm and associated tools can be found here:
https://github.com/stefanberger/swtpm
The swtpm's control channel protocol specification can be found here:
https://github.com/stefanberger/swtpm/wiki/Control-Channel-Specification
Usage:
# setup TPM state directory
mkdir /tmp/mytpm
chown -R tss:root /tmp/mytpm
/usr/bin/swtpm_setup --tpm-state /tmp/mytpm --createek
# Ask qemu to use TPM emulator with given tpm state directory
qemu-system-x86_64 \
[...] \
-chardev socket,id=chrtpm,path=/tmp/swtpm-sock \
-tpmdev emulator,id=tpm0,chardev=chrtpm \
-device tpm-tis,tpmdev=tpm0 \
[...]
Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Sadly, we don't have a TPM maintainer, not even a MAINTAINERS entry.
Create one, and mark it orphaned.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1503602048-12268-12-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
