Change in coreboot[master]: smbios: Add API to generate SMBIOS type 43 TPM Device

[Michał Żygowski (Code Review)]

Michał Żygowski has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/64048 )

Change subject: smbios: Add API to generate SMBIOS type 43 TPM Device
......................................................................

smbios: Add API to generate SMBIOS type 43 TPM Device

Based on DMTF SMBIOS Specification 3.1.0.

Signed-off-by: Michał Żygowski 
Change-Id: Ia2db29f8bc4cfbc6648bb2cabad074d9ea583ca9
---
M src/arch/x86/smbios.c
M src/include/smbios.h
2 files changed, 48 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/64048/1

diff --git a/src/arch/x86/smbios.c b/src/arch/x86/smbios.c
index c48ce86..0998bbe 100644
--- a/src/arch/x86/smbios.c
+++ b/src/arch/x86/smbios.c
@@ -1287,6 +1287,29 @@
    return len;
 }

+int smbios_write_type43(unsigned long *current, int *handle, const u32 vendor_id,
+			const u8 major_spec_ver, const u8 minor_spec_ver,
+			const u32 fw_ver1, const u32 fw_ver2, const char *description,
+			const u64 characteristics, const u32 oem_defined)
+{
+	struct smbios_type43 *t = smbios_carve_table(*current, SMBIOS_TPM_DEVICE,
+						     sizeof(*t), *handle);
+
+	t->vendor_id = vendor_id;
+	t->major_spec_ver = major_spec_ver;
+	t->minor_spec_ver = minor_spec_ver;
+	t->fw_ver1 = fw_ver1;
+	t->fw_ver2 = fw_ver2;
+	t->characteristics = characteristics;
+	t->oem_defined = oem_defined;
+	t->description = smbios_add_string(t->eos, description);
+
+	const int len = smbios_full_table_len(&t->header, t->eos);
+	*current += len;
+	*handle += 1;
+	return len;
+}
+
 unsigned long smbios_write_tables(unsigned long current)
 {
    struct smbios_entry *se;
diff --git a/src/include/smbios.h b/src/include/smbios.h
index 4e53771..0210665 100644
--- a/src/include/smbios.h
+++ b/src/include/smbios.h
@@ -35,6 +35,11 @@
    		const char *name, u8 instance, u16 segment,
    		u8 bus, u8 device, u8 function, u8 device_type);

+int smbios_write_type43(unsigned long *current, int *handle, const u32 vendor_id,
+			const u8 major_spec_ver, const u8 minor_spec_ver,
+			const u32 fw_ver1, const u32 fw_ver2, const char *description,
+			const u64 characteristics, const u32 oem_defined);
+
 struct device;
 int get_smbios_data(struct device *dev, int *handle, unsigned long *current);

@@ -253,6 +258,7 @@
    SMBIOS_SYSTEM_BOOT_INFORMATION = 32,
    SMBIOS_IPMI_DEVICE_INFORMATION = 38,
    SMBIOS_ONBOARD_DEVICES_EXTENDED_INFORMATION = 41,
+	SMBIOS_TPM_DEVICE = 43,
    SMBIOS_END_OF_TABLE = 127,
 } smbios_struct_type_t;

@@ -970,6 +976,25 @@
    u8 eos[2];
 } __packed;

+
+#define SMBIOS_TPM_DEVICE_CHARACTERISTICS_NOT_SUPPORTED (1ULL << 2)
+#define SMBIOS_TPM_DEVICE_FAMILY_CONFIGURABLE_VIA_FW_UPD (1ULL << 3)
+#define SMBIOS_TPM_DEVICE_FAMILY_CONFIGURABLE_VIA_PLATFORM_SW_SUPPORT (1ULL << 4)
+#define SMBIOS_TPM_DEVICE_FAMILY_CONFIGURABLE_VIA_OEM_PROPRIETARY (1ULL << 5)
+
+struct smbios_type43 {
+	struct smbios_header header;
+	u32 vendor_id;
+	u8 major_spec_ver;
+	u8 minor_spec_ver;
+	u32 fw_ver1;
+	u32 fw_ver2;
+	u8 description;
+	u64 characteristics;
+	u32 oem_defined;
+	u8 eos[2];
+} __packed;
+
 struct smbios_type127 {
    struct smbios_header header;
    u8 eos[2];