src/drivers/intel/fsp2_0/fsp_timestamp.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <console/console.h>
   4 #include <fsp/util.h>
   5 #include <lib.h>
   6
   7 #define TIMESTAMP_MS(x) ((x) / 1000ull)
   8
   9 static const uint8_t fpdt_guid[16] = {
  10         0xfd, 0x7b, 0x38, 0x3b, 0xbc, 0x7a, 0xf2, 0x4c,
  11         0xa0, 0xca, 0xb6, 0xa1, 0x6c, 0x1b, 0x1b, 0x25,
  12 };
  13
  14 enum fpdt_record_type {
  15         FPDT_GUID_EVENT         = 0x1010,
  16         FPDT_STRING_EVENT       = 0x1011,
  17 };
  18
  19 struct perf_record_hdr {
  20         uint16_t        type;
  21         uint8_t         length;
  22         uint8_t         revision;
  23 } __packed;
  24
  25 struct generic_event_record {
  26         struct perf_record_hdr  header;
  27         uint16_t                progress_id;
  28         uint32_t                apic_id;
  29         uint64_t                timestamp;
  30         uint8_t                 guid[16];
  31         uint8_t                 string[0];
  32 } __packed;
  33
  34 /*
  35  * Performance Hob:
  36  *   GUID - fpdt_guid;
  37  *   Data - FPDT_PEI_EXT_PERF_HEADER one or more FPDT records
  38 */
  39 struct fpdt_pei_ext_perf_header {
  40         uint32_t        table_size;
  41         uint32_t        load_image_count;
  42         uint32_t        hob_is_full;
  43 } __packed;
  44
  45 static void print_guid_record(const struct generic_event_record *rec)
  46 {
  47         printk(BIOS_INFO, "%5x\t%16llu\t\t", rec->progress_id, TIMESTAMP_MS(rec->timestamp));
  48         fsp_print_guid(BIOS_INFO, rec->guid);
  49         printk(BIOS_INFO, "\n");
  50 }
  51
  52 static void print_string_record(const struct generic_event_record *rec)
  53 {
  54         size_t str_len = rec->header.length - offsetof(struct generic_event_record, string);
  55         printk(BIOS_INFO, "%5x\t%16llu\t\t%*s/",
  56                rec->progress_id, TIMESTAMP_MS(rec->timestamp), (int)str_len, rec->string);
  57         fsp_print_guid(BIOS_INFO, rec->guid);
  58         printk(BIOS_INFO, "\n");
  59 }
  60
  61 static void print_fsp_perf_timestamp(const struct generic_event_record *rec)
  62 {
  63         switch (rec->header.type) {
  64         case FPDT_GUID_EVENT:
  65                 print_guid_record(rec);
  66                 break;
  67         case FPDT_STRING_EVENT:
  68                 print_string_record(rec);
  69                 break;
  70         default:
  71                 printk(BIOS_INFO, "Unhandled Event Type 0x%x\n", rec->header.type);
  72                 break;
  73         }
  74 }
  75
  76 static void print_fsp_timestamp_header(void)
  77 {
  78         printk(BIOS_INFO, "+---------------------------------------------------+\n");
  79         printk(BIOS_INFO, "|------ FSP Performance Timestamp Table Dump -------|\n");
  80         printk(BIOS_INFO, "+---------------------------------------------------+\n");
  81         printk(BIOS_INFO, "| Perf-ID\tTimestamp(ms)\t\tString/GUID |\n");
  82         printk(BIOS_INFO, "+---------------------------------------------------+\n");
  83 }
  84
  85 void fsp_display_timestamp(void)
  86 {
  87         size_t size;
  88         const struct fpdt_pei_ext_perf_header *hdr = fsp_find_extension_hob_by_guid(fpdt_guid,
  89                                                          &size);
  90
  91         if (!hdr || !size) {
  92                 printk(BIOS_INFO, "FPDT Extended Firmware Performance HOB Not Found!\n"
  93                 "Check if PcdFspPerformanceEnable is set to `TRUE` inside FSP package\n");
  94                 return;
  95         }
  96
  97         const struct generic_event_record *rec = (const struct generic_event_record *)(
  98                                 (uint8_t *)hdr + sizeof(struct fpdt_pei_ext_perf_header));
  99
 100         print_fsp_timestamp_header();
 101         for (size_t i = 0; i < hdr->table_size;) {
 102                 print_fsp_perf_timestamp(rec);
 103
 104                 i += rec->header.length;
 105                 rec = (const struct generic_event_record *)((uint8_t *)rec +
 106                                  rec->header.length);
 107         }
 108 }