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acpi: expose TPM/PPI configuration parameters to firmware via fw_cfg

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To avoid having to hard code the base address of the PPI virtual
memory device we introduce a fw_cfg file etc/tpm/config that holds the
base address of the PPI device, the version of the PPI interface and
the version of the attached TPM.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
[ Marc-André: renamed to etc/tpm/config, made it static, document it ]
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@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>
This commit is contained in:
Stefan Berger 2019-01-15 02:27:51 +04:00 • committed by Michael S. Tsirkin
parent 3b97c01e9c
commit 0fe2466903
3 changed files with 41 additions and 0 deletions
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3
include/hw/acpi/tpm.h
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@ -194,4 +194,7 @@ REG32(CRB_DATA_BUFFER, 0x80)
#define TPM_PPI_ADDR_SIZE 0x400
#define TPM_PPI_ADDR_BASE 0xFED45000
#define TPM_PPI_VERSION_NONE 0
#define TPM_PPI_VERSION_1_30 1
#endif /* HW_ACPI_TPM_H */