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| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2019-01-15 02:27:53 +0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-01-17 21:10:57 -0500 |
| commit | ec86c0f678a9402fb4265c8874bd2ec712b33127 (patch) | |
| tree | 99d8216b23dc5bf8f3f62176bd20f3e16f6e6723 /docs/specs | |
| parent | ac6dd31e3fe7e19be6fcaa7bf2396780b355137d (diff) | |
| download | focaccia-qemu-ec86c0f678a9402fb4265c8874bd2ec712b33127.tar.gz focaccia-qemu-ec86c0f678a9402fb4265c8874bd2ec712b33127.zip | |
acpi: add ACPI memory clear interface
The interface is described in the "TCG Platform Reset Attack Mitigation Specification", chapter 6 "ACPI _DSM Function". According to Laszlo, it's not so easy to implement in OVMF, he suggested to do it in qemu instead. See specification documentation for more details, and next commit for memory clear on reset handling. The underlying TCG specification is accessible from the following page. https://trustedcomputinggroup.org/resource/pc-client-work-group-platform-reset-attack-mitigation-specification-version-1-0/ This patch implements version 1.0. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Tested-by: Stefan Berger <stefanb@linux.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'docs/specs')
| -rw-r--r-- | docs/specs/tpm.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/specs/tpm.txt b/docs/specs/tpm.txt index 424d1511fc..5d8c26b1ad 100644 --- a/docs/specs/tpm.txt +++ b/docs/specs/tpm.txt @@ -136,6 +136,8 @@ layout: | next_step| 0x1 | 0x159 | Operation to execute after reboot by | | | | | firmware. Used by firmware. | +----------+--------+--------+-------------------------------------------+ + | movv | 0x1 | 0x15a | Memory overwrite variable | + +----------+--------+--------+-------------------------------------------+ The following values are supported for the 'func' field. They correspond to the values used by ACPI function index 8. |