1 /**
2 * Describes functions for converting firmware CPER sections from binary and JSON format
3 * into an intermediate format.
4 *
5 * Author: Lawrence.Tang@arm.com
6 **/
7 #include <stdio.h>
8 #include <json.h>
9 #include <libcper/Cper.h>
10 #include <libcper/cper-utils.h>
11 #include <libcper/sections/cper-section-firmware.h>
12 #include <libcper/log.h>
13 #include <string.h>
14
15 //Converts a single firmware CPER section into JSON IR.
cper_section_firmware_to_ir(const UINT8 * section,UINT32 size,char ** desc_string)16 json_object *cper_section_firmware_to_ir(const UINT8 *section, UINT32 size,
17 char **desc_string)
18 {
19 int outstr_len = 0;
20 *desc_string = malloc(SECTION_DESC_STRING_SIZE);
21 outstr_len = snprintf(*desc_string, SECTION_DESC_STRING_SIZE,
22 "A Firmware Error occurred");
23 if (outstr_len < 0) {
24 cper_print_log(
25 "Error: Could not write to Firmware description string\n");
26 } else if (outstr_len > SECTION_DESC_STRING_SIZE) {
27 cper_print_log(
28 "Error: Firmware description string truncated\n");
29 }
30
31 if (size < sizeof(EFI_FIRMWARE_ERROR_DATA)) {
32 return NULL;
33 }
34
35 EFI_FIRMWARE_ERROR_DATA *firmware_error =
36 (EFI_FIRMWARE_ERROR_DATA *)section;
37 json_object *section_ir = json_object_new_object();
38
39 //Record type.
40 json_object *record_type = integer_to_readable_pair(
41 firmware_error->ErrorType, 3, FIRMWARE_ERROR_RECORD_TYPES_KEYS,
42 FIRMWARE_ERROR_RECORD_TYPES_VALUES, "Unknown (Reserved)");
43 json_object_object_add(section_ir, "errorRecordType", record_type);
44
45 //Revision, record identifier.
46 json_object_object_add(section_ir, "revision",
47 json_object_new_int(firmware_error->Revision));
48 json_object_object_add(
49 section_ir, "recordID",
50 json_object_new_uint64(firmware_error->RecordId));
51
52 //Record GUID.
53 add_guid(section_ir, "recordIDGUID", &firmware_error->RecordIdGuid);
54
55 return section_ir;
56 }
57
58 //Converts a single firmware CPER-JSON section into CPER binary, outputting to the given stream.
ir_section_firmware_to_cper(json_object * section,FILE * out)59 void ir_section_firmware_to_cper(json_object *section, FILE *out)
60 {
61 EFI_FIRMWARE_ERROR_DATA *section_cper =
62 (EFI_FIRMWARE_ERROR_DATA *)calloc(
63 1, sizeof(EFI_FIRMWARE_ERROR_DATA));
64
65 //Record fields.
66 section_cper->ErrorType = readable_pair_to_integer(
67 json_object_object_get(section, "errorRecordType"));
68 section_cper->Revision = json_object_get_int(
69 json_object_object_get(section, "revision"));
70 section_cper->RecordId = json_object_get_uint64(
71 json_object_object_get(section, "recordID"));
72 string_to_guid(§ion_cper->RecordIdGuid,
73 json_object_get_string(json_object_object_get(
74 section, "recordIDGUID")));
75
76 //Write to stream, free resources.
77 fwrite(section_cper, sizeof(EFI_FIRMWARE_ERROR_DATA), 1, out);
78 fflush(out);
79 free(section_cper);
80 }
81