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acpi: change TPM TIS data conditions

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The device should be exposed if present. It shouldn't have an
undefined version (or else backend init failed, and device should fail
too). Finally, make the fields specific to TIS device model.

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 commit is contained in:
Marc-André Lureau 2017-11-06 19:39:18 +01:00 • committed by Stefan Berger
parent 5cf954d021
commit ff5ce21e1b
2 changed files with 11 additions and 4 deletions
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12
hw/i386/acpi-build.c
View file

@ -2038,7 +2038,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
}
}
if (misc->tpm_version != TPM_VERSION_UNSPEC) {
if (TPM_IS_TIS(tpm_find())) {
aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
}
@ -2204,7 +2204,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
/* Scan all PCI buses. Generate tables to support hotplug. */
build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
if (misc->tpm_version != TPM_VERSION_UNSPEC) {
if (TPM_IS_TIS(tpm_find())) {
dev = aml_device("ISA.TPM");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C31")));
aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
@ -2281,8 +2281,12 @@ build_tpm2(GArray *table_data, BIOSLinker *linker)
tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr);
tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT);
tpm2_ptr->control_area_address = cpu_to_le64(0);
tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO);
if (TPM_IS_TIS(tpm_find())) {
tpm2_ptr->control_area_address = cpu_to_le64(0);
tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO);
} else {
g_warn_if_reached();
}
build_header(linker, table_data,
(void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL);

3
include/sysemu/tpm.h
View file

@ -47,6 +47,9 @@ typedef struct TPMIfClass {
#define TYPE_TPM_TIS "tpm-tis"
#define TPM_IS_TIS(chr) \
object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS)
/* returns NULL unless there is exactly one TPM device */
static inline TPMIf *tpm_find(void)
{