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