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In case a xsdt table is present (and located below 4G)
prefer it over rsdt.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Add support for the TPM2 ACPI table. If we find it and its
of the appropriate size, we can get the log_area_start_address
and log_area_minimum_size from it.
The latest version of the spec can be found here:
https://trustedcomputinggroup.org/tcg-acpi-specification/
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
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The find_fadt() and find_tcpa_by_rsdp() functions are very similar.
Create a new find_acpi_table() function and replace the two functions
with this new function.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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This patch implements the main part of the TCG BIOS extensions. It provides
the following functionality:
- initialization of the TCPA ACPI table used for logging of measurements
- initialization of the TPM by sending a sequence of commands to it
- proper setup of the TPM before the BIOS hands over control to the bootloader
- support for S3 resume; BIOS sends TPM_Startup(ST_STATE) to TPM
- enable configuration of SeaBIOS to be built with TCGBIOS extensions
All TCG BIOS extensions are activated with CONFIG_TCGBIOS.
Structures that are needed in subsequent patches are also included in
tcgbios.h at this point.
The effect of this patch is that it initialized the TPM upon VM start
and S3 resume.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
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Instead of magic numbers, use specified macros for FADT Fixed Feature Flags.
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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