1 /** 2 * Describes functions for converting CCIX PER log 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 <string.h> 9 #include <json.h> 10 #include <libcper/base64.h> 11 #include <libcper/Cper.h> 12 #include <libcper/cper-utils.h> 13 #include <libcper/sections/cper-section-ccix-per.h> 14 #include <libcper/log.h> 15 16 //Converts a single CCIX PER log CPER section into JSON IR. 17 json_object *cper_section_ccix_per_to_ir(const UINT8 *section, UINT32 size) 18 { 19 if (size < sizeof(EFI_CCIX_PER_LOG_DATA)) { 20 return NULL; 21 } 22 23 EFI_CCIX_PER_LOG_DATA *ccix_error = (EFI_CCIX_PER_LOG_DATA *)section; 24 25 if (size < ccix_error->Length) { 26 return NULL; 27 } 28 29 json_object *section_ir = json_object_new_object(); 30 ValidationTypes ui64Type = { UINT_64T, 31 .value.ui64 = ccix_error->ValidBits }; 32 33 //Length (bytes) for the entire structure. 34 json_object_object_add(section_ir, "length", 35 json_object_new_uint64(ccix_error->Length)); 36 37 //CCIX source/port IDs. 38 if (isvalid_prop_to_ir(&ui64Type, 0)) { 39 json_object_object_add( 40 section_ir, "ccixSourceID", 41 json_object_new_int(ccix_error->CcixSourceId)); 42 } 43 if (isvalid_prop_to_ir(&ui64Type, 1)) { 44 json_object_object_add( 45 section_ir, "ccixPortID", 46 json_object_new_int(ccix_error->CcixPortId)); 47 } 48 49 //CCIX PER Log. 50 if (isvalid_prop_to_ir(&ui64Type, 2)) { 51 //This is formatted as described in Section 7.3.2 of CCIX Base Specification (Rev 1.0). 52 const UINT8 *cur_pos = (const UINT8 *)(ccix_error + 1); 53 int remaining_length = 54 ccix_error->Length - sizeof(EFI_CCIX_PER_LOG_DATA); 55 if (remaining_length > 0) { 56 int32_t encoded_len = 0; 57 58 char *encoded = base64_encode((UINT8 *)cur_pos, 59 remaining_length, 60 &encoded_len); 61 if (encoded == NULL) { 62 cper_print_log( 63 "Failed to allocate encode output buffer. \n"); 64 } else { 65 json_object_object_add( 66 section_ir, "ccixPERLog", 67 json_object_new_string_len( 68 encoded, encoded_len)); 69 free(encoded); 70 } 71 } 72 } 73 74 return section_ir; 75 } 76 77 //Converts a single CCIX PER CPER-JSON section into CPER binary, outputting to the given stream. 78 void ir_section_ccix_per_to_cper(json_object *section, FILE *out) 79 { 80 EFI_CCIX_PER_LOG_DATA *section_cper = (EFI_CCIX_PER_LOG_DATA *)calloc( 81 1, sizeof(EFI_CCIX_PER_LOG_DATA)); 82 83 ValidationTypes ui64Type = { UINT_64T, .value.ui64 = 0 }; 84 struct json_object *obj = NULL; 85 86 //Length. 87 section_cper->Length = json_object_get_uint64( 88 json_object_object_get(section, "length")); 89 90 //Validation bits. 91 section_cper->ValidBits = ir_to_bitfield( 92 json_object_object_get(section, "validationBits"), 3, 93 CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 94 95 //CCIX source/port IDs. 96 if (json_object_object_get_ex(section, "ccixSourceID", &obj)) { 97 section_cper->CcixSourceId = (UINT8)json_object_get_int(obj); 98 add_to_valid_bitfield(&ui64Type, 0); 99 } 100 if (json_object_object_get_ex(section, "ccixPortID", &obj)) { 101 section_cper->CcixPortId = (UINT8)json_object_get_int(obj); 102 add_to_valid_bitfield(&ui64Type, 1); 103 } 104 105 bool perlog_exists = false; 106 if (json_object_object_get_ex(section, "ccixPERLog", &obj)) { 107 perlog_exists = true; 108 add_to_valid_bitfield(&ui64Type, 2); 109 } 110 section_cper->ValidBits = ui64Type.value.ui64; 111 112 //Write header out to stream. 113 fwrite(section_cper, sizeof(EFI_CCIX_PER_LOG_DATA), 1, out); 114 fflush(out); 115 116 //Write CCIX PER log itself to stream. 117 if (perlog_exists) { 118 json_object *encoded = obj; 119 int32_t decoded_len = 0; 120 121 UINT8 *decoded = base64_decode( 122 json_object_get_string(encoded), 123 json_object_get_string_len(encoded), &decoded_len); 124 if (decoded == NULL) { 125 cper_print_log( 126 "Failed to allocate decode output buffer. \n"); 127 } else { 128 fwrite(decoded, decoded_len, 1, out); 129 fflush(out); 130 free(decoded); 131 } 132 } 133 //Free resources. 134 free(section_cper); 135 } 136