* [Qemu-devel] [PATCH] Add ACPI tables for TPM
@ 2014-07-22 19:55 Stefan Berger
2014-07-22 19:05 ` Michael S. Tsirkin
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Berger @ 2014-07-22 19:55 UTC (permalink / raw)
To: qemu-devel, mst; +Cc: Stefan Berger
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Add an SSDT ACPI table for the TPM device.
Add a TCPA table for BIOS logging area when a TPM is being used.
The latter follows this spec here:
http://www.trustedcomputinggroup.org/files/static_page_files/DCD4188E-1A4B-B294-D050A155FB6F7385/TCG_ACPIGeneralSpecification_PublicReview.pdf
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---
hw/i386/Makefile.objs | 3 ++-
hw/i386/acpi-build.c | 43 +++++++++++++++++++++++++++++++++++++++++++
hw/i386/acpi-defs.h | 11 +++++++++++
hw/i386/ssdt-tpm.dsl | 28 ++++++++++++++++++++++++++++
include/sysemu/tpm.h | 5 +++++
5 files changed, 89 insertions(+), 1 deletion(-)
create mode 100644 hw/i386/ssdt-tpm.dsl
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index 48014ab..3688cf8 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -10,7 +10,8 @@ obj-y += bios-linker-loader.o
hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \
hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex \
- hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex
+ hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex \
+ hw/i386/ssdt-tpm.hex
iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
; then echo "$(2)"; else echo "$(3)"; fi ;)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index ebc5f03..e5c2cdb 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -38,6 +38,7 @@
#include "hw/loader.h"
#include "hw/isa/isa.h"
#include "hw/acpi/memory_hotplug.h"
+#include "sysemu/tpm.h"
/* Supported chipsets: */
#include "hw/acpi/piix4.h"
@@ -75,6 +76,7 @@ typedef struct AcpiPmInfo {
typedef struct AcpiMiscInfo {
bool has_hpet;
+ bool has_tpm;
DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
const unsigned char *dsdt_code;
unsigned dsdt_size;
@@ -193,6 +195,7 @@ static void acpi_get_pm_info(AcpiPmInfo *pm)
static void acpi_get_misc_info(AcpiMiscInfo *info)
{
info->has_hpet = hpet_find();
+ info->has_tpm = tpm_find();
info->pvpanic_port = pvpanic_port();
}
@@ -681,6 +684,7 @@ static inline char acpi_get_hex(uint32_t val)
#include "hw/i386/ssdt-misc.hex"
#include "hw/i386/ssdt-pcihp.hex"
+#include "hw/i386/ssdt-tpm.hex"
static void
build_append_notify_method(GArray *device, const char *name,
@@ -1167,6 +1171,38 @@ build_hpet(GArray *table_data, GArray *linker)
(void *)hpet, "HPET", sizeof(*hpet), 1);
}
+static void
+build_tpm_tcpa(GArray *table_data, GArray *linker)
+{
+ Acpi20Tcpa *tcpa;
+ uint32_t laml = 128 * 1024;
+ uint64_t lasa;
+
+ lasa = table_data->len + sizeof(*tcpa);
+
+ tcpa = acpi_data_push(table_data, sizeof(*tcpa) + laml);
+
+ tcpa->laml = cpu_to_le32(laml);
+ tcpa->lasa = cpu_to_le64((uint64_t)lasa);
+
+ /* LASA address to be filled by Guest linker */
+ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
+ ACPI_BUILD_TABLE_FILE,
+ table_data, &tcpa->lasa,
+ sizeof(tcpa->lasa));
+ build_header(linker, table_data,
+ (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
+}
+
+static void
+build_tpm_ssdt(GArray *table_data, GArray *linker)
+{
+ void *tpm_ptr;
+
+ tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
+ memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
+}
+
typedef enum {
MEM_AFFINITY_NOFLAGS = 0,
MEM_AFFINITY_ENABLED = (1 << 0),
@@ -1489,6 +1525,13 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
acpi_add_table(table_offsets, tables->table_data);
build_hpet(tables->table_data, tables->linker);
}
+ if (misc.has_tpm) {
+ acpi_add_table(table_offsets, tables->table_data);
+ build_tpm_ssdt(tables->table_data, tables->linker);
+
+ acpi_add_table(table_offsets, tables->table_data);
+ build_tpm_tcpa(tables->table_data, tables->linker);
+ }
if (guest_info->numa_nodes) {
acpi_add_table(table_offsets, tables->table_data);
build_srat(tables->table_data, tables->linker, &cpu, guest_info);
diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h
index e93babb..8526215 100644
--- a/hw/i386/acpi-defs.h
+++ b/hw/i386/acpi-defs.h
@@ -314,4 +314,15 @@ struct AcpiTableMcfg {
} QEMU_PACKED;
typedef struct AcpiTableMcfg AcpiTableMcfg;
+/*
+ * TCPA Description Table
+ */
+struct Acpi20Tcpa {
+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
+ uint16_t platform_class;
+ uint32_t laml;
+ uint64_t lasa;
+} QEMU_PACKED;
+typedef struct Acpi20Tcpa Acpi20Tcpa;
+
#endif
diff --git a/hw/i386/ssdt-tpm.dsl b/hw/i386/ssdt-tpm.dsl
new file mode 100644
index 0000000..fd53cfb
--- /dev/null
+++ b/hw/i386/ssdt-tpm.dsl
@@ -0,0 +1,28 @@
+#include "hw/acpi/pc-hotplug.h"
+
+ACPI_EXTRACT_ALL_CODE ssdt_tpm_aml
+
+DefinitionBlock (
+ "ssdt-tpm.aml", // Output Filename
+ "SSDT", // Signature
+ 0x01, // SSDT Compliance Revision
+ "BXPC", // OEMID
+ "BXSSDT", // TABLE ID
+ 0x1 // OEM Revision
+ )
+{
+ Scope(\_SB) {
+ /* TPM with emulated TPM TIS interface */
+ Device (TPM) {
+ Name (_HID, EisaID ("PNP0C31"))
+ Name (_CRS, ResourceTemplate ()
+ {
+ Memory32Fixed (ReadWrite, 0xFED40000, 0x00005000)
+ //IRQNoFlags () {5}
+ })
+ Method (_STA, 0, NotSerialized) {
+ Return (0x0F)
+ }
+ }
+ }
+}
diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 13febdd..7cf2fc3 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -20,4 +20,9 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
int tpm_init(void);
void tpm_cleanup(void);
+static inline bool tpm_find(void)
+{
+ return (object_resolve_path_type("", "tpm-tis", NULL) != NULL);
+}
+
#endif /* QEMU_TPM_H */
--
1.9.3
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] Add ACPI tables for TPM
2014-07-22 19:55 [Qemu-devel] [PATCH] Add ACPI tables for TPM Stefan Berger
@ 2014-07-22 19:05 ` Michael S. Tsirkin
2014-07-22 20:13 ` Stefan Berger
0 siblings, 1 reply; 4+ messages in thread
From: Michael S. Tsirkin @ 2014-07-22 19:05 UTC (permalink / raw)
To: Stefan Berger; +Cc: qemu-devel, Stefan Berger
On Tue, Jul 22, 2014 at 03:55:38PM -0400, Stefan Berger wrote:
> From: Stefan Berger <stefanb@linux.vnet.ibm.com>
>
> Add an SSDT ACPI table for the TPM device.
> Add a TCPA table for BIOS logging area when a TPM is being used.
>
> The latter follows this spec here:
>
> http://www.trustedcomputinggroup.org/files/static_page_files/DCD4188E-1A4B-B294-D050A155FB6F7385/TCG_ACPIGeneralSpecification_PublicReview.pdf
>
> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Some comments below.
Also pls remember to repost when 2.1 is out.
> ---
> hw/i386/Makefile.objs | 3 ++-
> hw/i386/acpi-build.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> hw/i386/acpi-defs.h | 11 +++++++++++
> hw/i386/ssdt-tpm.dsl | 28 ++++++++++++++++++++++++++++
> include/sysemu/tpm.h | 5 +++++
> 5 files changed, 89 insertions(+), 1 deletion(-)
> create mode 100644 hw/i386/ssdt-tpm.dsl
>
> diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
> index 48014ab..3688cf8 100644
> --- a/hw/i386/Makefile.objs
> +++ b/hw/i386/Makefile.objs
> @@ -10,7 +10,8 @@ obj-y += bios-linker-loader.o
> hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
> hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \
> hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex \
> - hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex
> + hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex \
> + hw/i386/ssdt-tpm.hex
>
> iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
> ; then echo "$(2)"; else echo "$(3)"; fi ;)
> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> index ebc5f03..e5c2cdb 100644
> --- a/hw/i386/acpi-build.c
> +++ b/hw/i386/acpi-build.c
> @@ -38,6 +38,7 @@
> #include "hw/loader.h"
> #include "hw/isa/isa.h"
> #include "hw/acpi/memory_hotplug.h"
> +#include "sysemu/tpm.h"
>
> /* Supported chipsets: */
> #include "hw/acpi/piix4.h"
> @@ -75,6 +76,7 @@ typedef struct AcpiPmInfo {
>
> typedef struct AcpiMiscInfo {
> bool has_hpet;
> + bool has_tpm;
> DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
> const unsigned char *dsdt_code;
> unsigned dsdt_size;
> @@ -193,6 +195,7 @@ static void acpi_get_pm_info(AcpiPmInfo *pm)
> static void acpi_get_misc_info(AcpiMiscInfo *info)
> {
> info->has_hpet = hpet_find();
> + info->has_tpm = tpm_find();
> info->pvpanic_port = pvpanic_port();
> }
>
> @@ -681,6 +684,7 @@ static inline char acpi_get_hex(uint32_t val)
>
> #include "hw/i386/ssdt-misc.hex"
> #include "hw/i386/ssdt-pcihp.hex"
> +#include "hw/i386/ssdt-tpm.hex"
>
> static void
> build_append_notify_method(GArray *device, const char *name,
> @@ -1167,6 +1171,38 @@ build_hpet(GArray *table_data, GArray *linker)
> (void *)hpet, "HPET", sizeof(*hpet), 1);
> }
>
> +static void
> +build_tpm_tcpa(GArray *table_data, GArray *linker)
> +{
> + Acpi20Tcpa *tcpa;
> + uint32_t laml = 128 * 1024;
what are these numbers for?
> + uint64_t lasa;
> +
> + lasa = table_data->len + sizeof(*tcpa);
> +
> + tcpa = acpi_data_push(table_data, sizeof(*tcpa) + laml);
> +
> + tcpa->laml = cpu_to_le32(laml);
> + tcpa->lasa = cpu_to_le64((uint64_t)lasa);
> +
> + /* LASA address to be filled by Guest linker */
> + bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
> + ACPI_BUILD_TABLE_FILE,
> + table_data, &tcpa->lasa,
> + sizeof(tcpa->lasa));
> + build_header(linker, table_data,
> + (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
> +}
> +
> +static void
> +build_tpm_ssdt(GArray *table_data, GArray *linker)
> +{
> + void *tpm_ptr;
> +
> + tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
> + memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
> +}
> +
> typedef enum {
> MEM_AFFINITY_NOFLAGS = 0,
> MEM_AFFINITY_ENABLED = (1 << 0),
> @@ -1489,6 +1525,13 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
> acpi_add_table(table_offsets, tables->table_data);
> build_hpet(tables->table_data, tables->linker);
> }
> + if (misc.has_tpm) {
> + acpi_add_table(table_offsets, tables->table_data);
> + build_tpm_ssdt(tables->table_data, tables->linker);
> +
> + acpi_add_table(table_offsets, tables->table_data);
> + build_tpm_tcpa(tables->table_data, tables->linker);
> + }
> if (guest_info->numa_nodes) {
> acpi_add_table(table_offsets, tables->table_data);
> build_srat(tables->table_data, tables->linker, &cpu, guest_info);
> diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h
> index e93babb..8526215 100644
> --- a/hw/i386/acpi-defs.h
> +++ b/hw/i386/acpi-defs.h
> @@ -314,4 +314,15 @@ struct AcpiTableMcfg {
> } QEMU_PACKED;
> typedef struct AcpiTableMcfg AcpiTableMcfg;
>
> +/*
> + * TCPA Description Table
> + */
> +struct Acpi20Tcpa {
> + ACPI_TABLE_HEADER_DEF /* ACPI common table header */
> + uint16_t platform_class;
> + uint32_t laml;
> + uint64_t lasa;
> +} QEMU_PACKED;
> +typedef struct Acpi20Tcpa Acpi20Tcpa;
> +
> #endif
> diff --git a/hw/i386/ssdt-tpm.dsl b/hw/i386/ssdt-tpm.dsl
> new file mode 100644
> index 0000000..fd53cfb
> --- /dev/null
> +++ b/hw/i386/ssdt-tpm.dsl
> @@ -0,0 +1,28 @@
> +#include "hw/acpi/pc-hotplug.h"
> +
> +ACPI_EXTRACT_ALL_CODE ssdt_tpm_aml
> +
> +DefinitionBlock (
> + "ssdt-tpm.aml", // Output Filename
> + "SSDT", // Signature
> + 0x01, // SSDT Compliance Revision
> + "BXPC", // OEMID
> + "BXSSDT", // TABLE ID
> + 0x1 // OEM Revision
> + )
> +{
> + Scope(\_SB) {
> + /* TPM with emulated TPM TIS interface */
> + Device (TPM) {
> + Name (_HID, EisaID ("PNP0C31"))
> + Name (_CRS, ResourceTemplate ()
> + {
> + Memory32Fixed (ReadWrite, 0xFED40000, 0x00005000)
what are these magic numbers?
you can use defines for them.
> + //IRQNoFlags () {5}
What's this?
> + })
> + Method (_STA, 0, NotSerialized) {
> + Return (0x0F)
> + }
> + }
> + }
> +}
> diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
> index 13febdd..7cf2fc3 100644
> --- a/include/sysemu/tpm.h
> +++ b/include/sysemu/tpm.h
> @@ -20,4 +20,9 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
> int tpm_init(void);
> void tpm_cleanup(void);
>
> +static inline bool tpm_find(void)
> +{
> + return (object_resolve_path_type("", "tpm-tis", NULL) != NULL);
outer () not needed.
> +}
> +
> #endif /* QEMU_TPM_H */
> --
> 1.9.3
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] Add ACPI tables for TPM
2014-07-22 19:05 ` Michael S. Tsirkin
@ 2014-07-22 20:13 ` Stefan Berger
2014-07-22 19:36 ` Michael S. Tsirkin
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Berger @ 2014-07-22 20:13 UTC (permalink / raw)
To: Michael S. Tsirkin, Stefan Berger; +Cc: qemu-devel
On 07/22/2014 03:05 PM, Michael S. Tsirkin wrote:
> On Tue, Jul 22, 2014 at 03:55:38PM -0400, Stefan Berger wrote:
>> From: Stefan Berger <stefanb@linux.vnet.ibm.com>
>>
>> Add an SSDT ACPI table for the TPM device.
>> Add a TCPA table for BIOS logging area when a TPM is being used.
>>
>> The latter follows this spec here:
>>
>> http://www.trustedcomputinggroup.org/files/static_page_files/DCD4188E-1A4B-B294-D050A155FB6F7385/TCG_ACPIGeneralSpecification_PublicReview.pdf
>>
>> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
> Some comments below.
> Also pls remember to repost when 2.1 is out.
Will do.
See answers below.
>
>> ---
>> hw/i386/Makefile.objs | 3 ++-
>> hw/i386/acpi-build.c | 43 +++++++++++++++++++++++++++++++++++++++++++
>> hw/i386/acpi-defs.h | 11 +++++++++++
>> hw/i386/ssdt-tpm.dsl | 28 ++++++++++++++++++++++++++++
>> include/sysemu/tpm.h | 5 +++++
>> 5 files changed, 89 insertions(+), 1 deletion(-)
>> create mode 100644 hw/i386/ssdt-tpm.dsl
>>
>> diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
>> index 48014ab..3688cf8 100644
>> --- a/hw/i386/Makefile.objs
>> +++ b/hw/i386/Makefile.objs
>> @@ -10,7 +10,8 @@ obj-y += bios-linker-loader.o
>> hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
>> hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \
>> hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex \
>> - hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex
>> + hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex \
>> + hw/i386/ssdt-tpm.hex
>>
>> iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
>> ; then echo "$(2)"; else echo "$(3)"; fi ;)
>> diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
>> index ebc5f03..e5c2cdb 100644
>> --- a/hw/i386/acpi-build.c
>> +++ b/hw/i386/acpi-build.c
>> @@ -38,6 +38,7 @@
>> #include "hw/loader.h"
>> #include "hw/isa/isa.h"
>> #include "hw/acpi/memory_hotplug.h"
>> +#include "sysemu/tpm.h"
>>
>> /* Supported chipsets: */
>> #include "hw/acpi/piix4.h"
>> @@ -75,6 +76,7 @@ typedef struct AcpiPmInfo {
>>
>> typedef struct AcpiMiscInfo {
>> bool has_hpet;
>> + bool has_tpm;
>> DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
>> const unsigned char *dsdt_code;
>> unsigned dsdt_size;
>> @@ -193,6 +195,7 @@ static void acpi_get_pm_info(AcpiPmInfo *pm)
>> static void acpi_get_misc_info(AcpiMiscInfo *info)
>> {
>> info->has_hpet = hpet_find();
>> + info->has_tpm = tpm_find();
>> info->pvpanic_port = pvpanic_port();
>> }
>>
>> @@ -681,6 +684,7 @@ static inline char acpi_get_hex(uint32_t val)
>>
>> #include "hw/i386/ssdt-misc.hex"
>> #include "hw/i386/ssdt-pcihp.hex"
>> +#include "hw/i386/ssdt-tpm.hex"
>>
>> static void
>> build_append_notify_method(GArray *device, const char *name,
>> @@ -1167,6 +1171,38 @@ build_hpet(GArray *table_data, GArray *linker)
>> (void *)hpet, "HPET", sizeof(*hpet), 1);
>> }
>>
>> +static void
>> +build_tpm_tcpa(GArray *table_data, GArray *linker)
>> +{
>> + Acpi20Tcpa *tcpa;
>> + uint32_t laml = 128 * 1024;
> what are these numbers for?
Follow above referenced specs, laml stands for log area minimum length,
in bytes. So this is the number of bytes of a memory area to log into.
>
>> + uint64_t lasa;
>> +
>> + lasa = table_data->len + sizeof(*tcpa);
>> +
>> + tcpa = acpi_data_push(table_data, sizeof(*tcpa) + laml);
>> +
>> + tcpa->laml = cpu_to_le32(laml);
>> + tcpa->lasa = cpu_to_le64((uint64_t)lasa);
>> +
>> + /* LASA address to be filled by Guest linker */
>> + bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
>> + ACPI_BUILD_TABLE_FILE,
>> + table_data, &tcpa->lasa,
>> + sizeof(tcpa->lasa));
>> + build_header(linker, table_data,
>> + (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
>> +}
>> +
>> +static void
>> +build_tpm_ssdt(GArray *table_data, GArray *linker)
>> +{
>> + void *tpm_ptr;
>> +
>> + tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
>> + memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
>> +}
>> +
>> typedef enum {
>> MEM_AFFINITY_NOFLAGS = 0,
>> MEM_AFFINITY_ENABLED = (1 << 0),
>> @@ -1489,6 +1525,13 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
>> acpi_add_table(table_offsets, tables->table_data);
>> build_hpet(tables->table_data, tables->linker);
>> }
>> + if (misc.has_tpm) {
>> + acpi_add_table(table_offsets, tables->table_data);
>> + build_tpm_ssdt(tables->table_data, tables->linker);
>> +
>> + acpi_add_table(table_offsets, tables->table_data);
>> + build_tpm_tcpa(tables->table_data, tables->linker);
>> + }
>> if (guest_info->numa_nodes) {
>> acpi_add_table(table_offsets, tables->table_data);
>> build_srat(tables->table_data, tables->linker, &cpu, guest_info);
>> diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h
>> index e93babb..8526215 100644
>> --- a/hw/i386/acpi-defs.h
>> +++ b/hw/i386/acpi-defs.h
>> @@ -314,4 +314,15 @@ struct AcpiTableMcfg {
>> } QEMU_PACKED;
>> typedef struct AcpiTableMcfg AcpiTableMcfg;
>>
>> +/*
>> + * TCPA Description Table
>> + */
>> +struct Acpi20Tcpa {
>> + ACPI_TABLE_HEADER_DEF /* ACPI common table header */
>> + uint16_t platform_class;
>> + uint32_t laml;
>> + uint64_t lasa;
>> +} QEMU_PACKED;
>> +typedef struct Acpi20Tcpa Acpi20Tcpa;
>> +
>> #endif
>> diff --git a/hw/i386/ssdt-tpm.dsl b/hw/i386/ssdt-tpm.dsl
>> new file mode 100644
>> index 0000000..fd53cfb
>> --- /dev/null
>> +++ b/hw/i386/ssdt-tpm.dsl
>> @@ -0,0 +1,28 @@
>> +#include "hw/acpi/pc-hotplug.h"
>> +
>> +ACPI_EXTRACT_ALL_CODE ssdt_tpm_aml
>> +
>> +DefinitionBlock (
>> + "ssdt-tpm.aml", // Output Filename
>> + "SSDT", // Signature
>> + 0x01, // SSDT Compliance Revision
>> + "BXPC", // OEMID
>> + "BXSSDT", // TABLE ID
>> + 0x1 // OEM Revision
>> + )
>> +{
>> + Scope(\_SB) {
>> + /* TPM with emulated TPM TIS interface */
>> + Device (TPM) {
>> + Name (_HID, EisaID ("PNP0C31"))
>> + Name (_CRS, ResourceTemplate ()
>> + {
>> + Memory32Fixed (ReadWrite, 0xFED40000, 0x00005000)
> what are these magic numbers?
TOM TIS MMIO area start and length.
> you can use defines for them.
>
>> + //IRQNoFlags () {5}
> What's this?
If we run the TPM with IRQ, older Linux kernels may not work; so polling
mode is unfortunately better.
>
>> + })
>> + Method (_STA, 0, NotSerialized) {
>> + Return (0x0F)
>> + }
>> + }
>> + }
>> +}
>> diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
>> index 13febdd..7cf2fc3 100644
>> --- a/include/sysemu/tpm.h
>> +++ b/include/sysemu/tpm.h
>> @@ -20,4 +20,9 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
>> int tpm_init(void);
>> void tpm_cleanup(void);
>>
>> +static inline bool tpm_find(void)
>> +{
>> + return (object_resolve_path_type("", "tpm-tis", NULL) != NULL);
> outer () not needed.
Ok.
>
>> +}
>> +
>> #endif /* QEMU_TPM_H */
>> --
>> 1.9.3
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [Qemu-devel] [PATCH] Add ACPI tables for TPM
2014-07-22 20:13 ` Stefan Berger
@ 2014-07-22 19:36 ` Michael S. Tsirkin
0 siblings, 0 replies; 4+ messages in thread
From: Michael S. Tsirkin @ 2014-07-22 19:36 UTC (permalink / raw)
To: Stefan Berger; +Cc: Stefan Berger, qemu-devel
On Tue, Jul 22, 2014 at 04:13:01PM -0400, Stefan Berger wrote:
> On 07/22/2014 03:05 PM, Michael S. Tsirkin wrote:
> >On Tue, Jul 22, 2014 at 03:55:38PM -0400, Stefan Berger wrote:
> >>From: Stefan Berger <stefanb@linux.vnet.ibm.com>
> >>
> >>Add an SSDT ACPI table for the TPM device.
> >>Add a TCPA table for BIOS logging area when a TPM is being used.
> >>
> >>The latter follows this spec here:
> >>
> >>http://www.trustedcomputinggroup.org/files/static_page_files/DCD4188E-1A4B-B294-D050A155FB6F7385/TCG_ACPIGeneralSpecification_PublicReview.pdf
> >>
> >>Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
> >Some comments below.
> >Also pls remember to repost when 2.1 is out.
>
> Will do.
> See answers below.
>
> >
> >>---
> >> hw/i386/Makefile.objs | 3 ++-
> >> hw/i386/acpi-build.c | 43 +++++++++++++++++++++++++++++++++++++++++++
> >> hw/i386/acpi-defs.h | 11 +++++++++++
> >> hw/i386/ssdt-tpm.dsl | 28 ++++++++++++++++++++++++++++
> >> include/sysemu/tpm.h | 5 +++++
> >> 5 files changed, 89 insertions(+), 1 deletion(-)
> >> create mode 100644 hw/i386/ssdt-tpm.dsl
> >>
> >>diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
> >>index 48014ab..3688cf8 100644
> >>--- a/hw/i386/Makefile.objs
> >>+++ b/hw/i386/Makefile.objs
> >>@@ -10,7 +10,8 @@ obj-y += bios-linker-loader.o
> >> hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \
> >> hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \
> >> hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex \
> >>- hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex
> >>+ hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex \
> >>+ hw/i386/ssdt-tpm.hex
> >> iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
> >> ; then echo "$(2)"; else echo "$(3)"; fi ;)
> >>diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
> >>index ebc5f03..e5c2cdb 100644
> >>--- a/hw/i386/acpi-build.c
> >>+++ b/hw/i386/acpi-build.c
> >>@@ -38,6 +38,7 @@
> >> #include "hw/loader.h"
> >> #include "hw/isa/isa.h"
> >> #include "hw/acpi/memory_hotplug.h"
> >>+#include "sysemu/tpm.h"
> >> /* Supported chipsets: */
> >> #include "hw/acpi/piix4.h"
> >>@@ -75,6 +76,7 @@ typedef struct AcpiPmInfo {
> >> typedef struct AcpiMiscInfo {
> >> bool has_hpet;
> >>+ bool has_tpm;
> >> DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
> >> const unsigned char *dsdt_code;
> >> unsigned dsdt_size;
> >>@@ -193,6 +195,7 @@ static void acpi_get_pm_info(AcpiPmInfo *pm)
> >> static void acpi_get_misc_info(AcpiMiscInfo *info)
> >> {
> >> info->has_hpet = hpet_find();
> >>+ info->has_tpm = tpm_find();
> >> info->pvpanic_port = pvpanic_port();
> >> }
> >>@@ -681,6 +684,7 @@ static inline char acpi_get_hex(uint32_t val)
> >> #include "hw/i386/ssdt-misc.hex"
> >> #include "hw/i386/ssdt-pcihp.hex"
> >>+#include "hw/i386/ssdt-tpm.hex"
> >> static void
> >> build_append_notify_method(GArray *device, const char *name,
> >>@@ -1167,6 +1171,38 @@ build_hpet(GArray *table_data, GArray *linker)
> >> (void *)hpet, "HPET", sizeof(*hpet), 1);
> >> }
> >>+static void
> >>+build_tpm_tcpa(GArray *table_data, GArray *linker)
> >>+{
> >>+ Acpi20Tcpa *tcpa;
> >>+ uint32_t laml = 128 * 1024;
> >what are these numbers for?
>
> Follow above referenced specs, laml stands for log area minimum length, in
> bytes. So this is the number of bytes of a memory area to log into.
I see. Might be more obvious as a define e.g. TPM_LAML or TPM_LOG_AREA_MIN_LENGTH.
> >
> >>+ uint64_t lasa;
and what does lasa stand for? why not just open-code?
> >>+
> >>+ lasa = table_data->len + sizeof(*tcpa);
> >>+
> >>+ tcpa = acpi_data_push(table_data, sizeof(*tcpa) + laml);
> >>+
> >>+ tcpa->laml = cpu_to_le32(laml);
> >>+ tcpa->lasa = cpu_to_le64((uint64_t)lasa);
cast not needed.
> >>+
> >>+ /* LASA address to be filled by Guest linker */
> >>+ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
> >>+ ACPI_BUILD_TABLE_FILE,
> >>+ table_data, &tcpa->lasa,
> >>+ sizeof(tcpa->lasa));
> >>+ build_header(linker, table_data,
> >>+ (void *)tcpa, "TCPA", sizeof(*tcpa), 2);
> >>+}
> >>+
> >>+static void
> >>+build_tpm_ssdt(GArray *table_data, GArray *linker)
> >>+{
> >>+ void *tpm_ptr;
> >>+
> >>+ tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
> >>+ memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
> >>+}
> >>+
> >> typedef enum {
> >> MEM_AFFINITY_NOFLAGS = 0,
> >> MEM_AFFINITY_ENABLED = (1 << 0),
> >>@@ -1489,6 +1525,13 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
> >> acpi_add_table(table_offsets, tables->table_data);
> >> build_hpet(tables->table_data, tables->linker);
> >> }
> >>+ if (misc.has_tpm) {
> >>+ acpi_add_table(table_offsets, tables->table_data);
> >>+ build_tpm_ssdt(tables->table_data, tables->linker);
> >>+
> >>+ acpi_add_table(table_offsets, tables->table_data);
> >>+ build_tpm_tcpa(tables->table_data, tables->linker);
> >>+ }
> >> if (guest_info->numa_nodes) {
> >> acpi_add_table(table_offsets, tables->table_data);
> >> build_srat(tables->table_data, tables->linker, &cpu, guest_info);
> >>diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h
> >>index e93babb..8526215 100644
> >>--- a/hw/i386/acpi-defs.h
> >>+++ b/hw/i386/acpi-defs.h
> >>@@ -314,4 +314,15 @@ struct AcpiTableMcfg {
> >> } QEMU_PACKED;
> >> typedef struct AcpiTableMcfg AcpiTableMcfg;
> >>+/*
> >>+ * TCPA Description Table
> >>+ */
> >>+struct Acpi20Tcpa {
> >>+ ACPI_TABLE_HEADER_DEF /* ACPI common table header */
> >>+ uint16_t platform_class;
> >>+ uint32_t laml;
> >>+ uint64_t lasa;
> >>+} QEMU_PACKED;
> >>+typedef struct Acpi20Tcpa Acpi20Tcpa;
> >>+
> >> #endif
> >>diff --git a/hw/i386/ssdt-tpm.dsl b/hw/i386/ssdt-tpm.dsl
> >>new file mode 100644
> >>index 0000000..fd53cfb
> >>--- /dev/null
> >>+++ b/hw/i386/ssdt-tpm.dsl
> >>@@ -0,0 +1,28 @@
> >>+#include "hw/acpi/pc-hotplug.h"
> >>+
> >>+ACPI_EXTRACT_ALL_CODE ssdt_tpm_aml
> >>+
> >>+DefinitionBlock (
> >>+ "ssdt-tpm.aml", // Output Filename
> >>+ "SSDT", // Signature
> >>+ 0x01, // SSDT Compliance Revision
> >>+ "BXPC", // OEMID
> >>+ "BXSSDT", // TABLE ID
> >>+ 0x1 // OEM Revision
> >>+ )
> >>+{
> >>+ Scope(\_SB) {
> >>+ /* TPM with emulated TPM TIS interface */
> >>+ Device (TPM) {
> >>+ Name (_HID, EisaID ("PNP0C31"))
> >>+ Name (_CRS, ResourceTemplate ()
> >>+ {
> >>+ Memory32Fixed (ReadWrite, 0xFED40000, 0x00005000)
> >what are these magic numbers?
>
> TOM TIS MMIO area start and length.
Isn't there a define for this? We pre-process dsl so you
can just use an existing define.
> >you can use defines for them.
> >
> >>+ //IRQNoFlags () {5}
> >What's this?
>
> If we run the TPM with IRQ, older Linux kernels may not work; so polling
> mode is unfortunately better.
So replace this comment with an explanation.
> >
> >>+ })
> >>+ Method (_STA, 0, NotSerialized) {
> >>+ Return (0x0F)
> >>+ }
> >>+ }
> >>+ }
> >>+}
> >>diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
> >>index 13febdd..7cf2fc3 100644
> >>--- a/include/sysemu/tpm.h
> >>+++ b/include/sysemu/tpm.h
> >>@@ -20,4 +20,9 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
> >> int tpm_init(void);
> >> void tpm_cleanup(void);
> >>+static inline bool tpm_find(void)
> >>+{
> >>+ return (object_resolve_path_type("", "tpm-tis", NULL) != NULL);
> >outer () not needed.
>
> Ok.
>
> >
> >>+}
> >>+
> >> #endif /* QEMU_TPM_H */
> >>--
> >>1.9.3
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-07-22 19:55 [Qemu-devel] [PATCH] Add ACPI tables for TPM Stefan Berger
2014-07-22 19:05 ` Michael S. Tsirkin
2014-07-22 20:13 ` Stefan Berger
2014-07-22 19:36 ` Michael S. Tsirkin
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