On 11-04-2025 02:11, Ross Philipson wrote:
Introduce the main Secure Launch header file used in the early SL stub
and the early setup code.
This header file contains the following categories:
- Secure Launch implementation specific structures and definitions.
- Intel TXT architecture specific DRTM structures, definitions and functions
used by Secure Launch.
- DRTM TPM event logging definitions and helper functions.
Signed-off-by: Ross Philipson <[email protected]>
---
+#define TXT_HEAP_EXTDATA_TYPE_TPM_EVENT_LOG_PTR 5
+
+struct txt_heap_event_log_element {
+ u64 event_log_phys_addr;
+} __packed;
+
can be consistence with PTR
+#define TXT_HEAP_EXTDATA_TYPE_EVENT_LOG_POINTER2_1 8
+
+struct txt_heap_event_log_pointer2_1_element {
+ u64 phys_addr;
+ u32 allocated_event_container_size;
+ u32 first_record_offset;
+ u32 next_record_offset;
+} __packed;
+/*
+ * Find the TPM v2 event log element in the TXT heap. This element contains
+ * the information about the size and location of the DRTM event log. Note
+ * this is a TXT specific structure.
+ *
+ * See:
+ * Intel Trusted Execution Technology - Measured Launch Environment
Developer's Guide - Appendix C.
+ */
+static inline struct txt_heap_event_log_pointer2_1_element*
+tpm2_find_log2_1_element(struct txt_os_sinit_data *os_sinit_data)
+{
+ struct txt_heap_ext_data_element *ext_elem;
+
+ /* The extended element array as at the end of this table */
+ ext_elem = (struct txt_heap_ext_data_element *)
+ ((u8 *)os_sinit_data + sizeof(struct txt_os_sinit_data));
+
+ while (ext_elem->type != TXT_HEAP_EXTDATA_TYPE_END) {
+ if (ext_elem->type ==
+ TXT_HEAP_EXTDATA_TYPE_EVENT_LOG_POINTER2_1) {
+ return (struct txt_heap_event_log_pointer2_1_element *)
+ ((u8 *)ext_elem +
+ sizeof(struct
txt_heap_ext_data_element));
indentation can be better here
+ }
+ ext_elem =
+ (struct txt_heap_ext_data_element *)
+ ((u8 *)ext_elem + ext_elem->size);
+ }
+
+ return NULL;
+}
+
'
'
+
+/*
+ * External functions avalailable in mainline kernel.
typo avalailable -> available
+ */
+void slaunch_setup_txt(void);
+void slaunch_fixup_jump_vector(void);
+u32 slaunch_get_flags(void);
+struct sl_ap_wake_info *slaunch_get_ap_wake_info(void);
+struct acpi_table_header *slaunch_get_dmar_table(struct acpi_table_header
*dmar);
+void __noreturn slaunch_txt_reset(void __iomem *txt,
+ const char *msg, u64 error);
+void slaunch_finalize(int do_sexit);
+
+static inline bool slaunch_is_txt_launch(void)
+{
+ u32 mask = SL_FLAG_ACTIVE | SL_FLAG_ARCH_TXT;
extra ' ' after =
+
+ return (slaunch_get_flags() & mask) == mask;
+}
Thanks,
Alok
