TF-A: Add Event Log for Measured Boot
This patch adds support for Event Log generation required
for Measured Boot functionality.
Change-Id: I34f05a33565e6659e78499d62cc6fb00b7d6c2dc
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
diff --git a/include/drivers/measured_boot/event_log.h b/include/drivers/measured_boot/event_log.h
new file mode 100644
index 0000000..10dfbb3
--- /dev/null
+++ b/include/drivers/measured_boot/event_log.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef EVENT_LOG_H
+#define EVENT_LOG_H
+
+#include <stdint.h>
+
+#include <common/debug.h>
+#include <drivers/measured_boot/tcg.h>
+
+/*
+ * Set Event Log debug level to one of:
+ *
+ * LOG_LEVEL_ERROR
+ * LOG_LEVEL_INFO
+ * LOG_LEVEL_WARNING
+ * LOG_LEVEL_VERBOSE
+ */
+#define EVENT_LOG_LEVEL LOG_LEVEL_INFO
+
+#if EVENT_LOG_LEVEL == LOG_LEVEL_ERROR
+#define LOG_EVENT ERROR
+#elif EVENT_LOG_LEVEL == LOG_LEVEL_NOTICE
+#define LOG_EVENT NOTICE
+#elif EVENT_LOG_LEVEL == LOG_LEVEL_WARNING
+#define LOG_EVENT WARN
+#elif EVENT_LOG_LEVEL == LOG_LEVEL_INFO
+#define LOG_EVENT INFO
+#elif EVENT_LOG_LEVEL == LOG_LEVEL_VERBOSE
+#define LOG_EVENT VERBOSE
+#else
+#error "Not supported EVENT_LOG_LEVEL"
+#endif
+
+/* Number of hashing algorithms supported */
+#define HASH_ALG_COUNT 1U
+
+#define INVALID_ID MAX_NUMBER_IDS
+
+#define MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
+
+#define BL2_STRING "BL_2"
+#define BL31_STRING "BL_31"
+#define BL32_STRING "BL_32"
+#define BL32_EXTRA1_IMAGE_STRING "BL32_EXTRA1_IMAGE"
+#define BL32_EXTRA2_IMAGE_STRING "BL32_EXTRA2_IMAGE"
+#define BL33_STRING "BL_33"
+#define GPT_IMAGE_STRING "GPT"
+#define HW_CONFIG_STRING "HW_CONFIG"
+#define NT_FW_CONFIG_STRING "NT_FW_CONFIG"
+#define SCP_BL2_IMAGE_STRING "SCP_BL2_IMAGE"
+#define SOC_FW_CONFIG_STRING "SOC_FW_CONFIG"
+#define STM32_IMAGE_STRING "STM32"
+#define TOS_FW_CONFIG_STRING "TOS_FW_CONFIG"
+
+typedef struct {
+ unsigned int id;
+ const char *name;
+ unsigned int pcr;
+} image_data_t;
+
+typedef struct {
+ const image_data_t *images_data;
+ int (*set_nt_fw_info)(uintptr_t config_base,
+#ifdef SPD_opteed
+ uintptr_t log_addr,
+#endif
+ size_t log_size, uintptr_t *ns_log_addr);
+ int (*set_tos_fw_info)(uintptr_t config_base, uintptr_t log_addr,
+ size_t log_size);
+} measured_boot_data_t;
+
+#define ID_EVENT_SIZE (sizeof(id_event_headers_t) + \
+ (sizeof(id_event_algorithm_size_t) * HASH_ALG_COUNT) + \
+ sizeof(id_event_struct_data_t))
+
+#define LOC_EVENT_SIZE (sizeof(event2_header_t) + \
+ sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \
+ sizeof(event2_data_t) + \
+ sizeof(startup_locality_event_t))
+
+#define LOG_MIN_SIZE (ID_EVENT_SIZE + LOC_EVENT_SIZE)
+
+#define EVENT2_HDR_SIZE (sizeof(event2_header_t) + \
+ sizeof(tpmt_ha) + TCG_DIGEST_SIZE + \
+ sizeof(event2_data_t))
+
+/* Functions' declarations */
+void event_log_init(void);
+int event_log_finalise(uint8_t **log_addr, size_t *log_size);
+void dump_event_log(uint8_t *log_addr, size_t log_size);
+const measured_boot_data_t *plat_get_measured_boot_data(void);
+int tpm_record_measurement(uintptr_t data_base, uint32_t data_size,
+ uint32_t data_id);
+#endif /* EVENT_LOG_H */