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 "libbase64.h" 11 #include "../edk/Cper.h" 12 #include "../cper-utils.h" 13 #include "cper-section-ccix-per.h" 14 15 //Converts a single CCIX PER log CPER section into JSON IR. 16 json_object *cper_section_ccix_per_to_ir(void *section) 17 { 18 EFI_CCIX_PER_LOG_DATA *ccix_error = (EFI_CCIX_PER_LOG_DATA *)section; 19 json_object *section_ir = json_object_new_object(); 20 21 //Length (bytes) for the entire structure. 22 json_object_object_add(section_ir, "length", 23 json_object_new_uint64(ccix_error->Length)); 24 25 //Validation bits. 26 json_object *validation = bitfield_to_ir( 27 ccix_error->ValidBits, 3, CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 28 json_object_object_add(section_ir, "validationBits", validation); 29 30 //CCIX source/port IDs. 31 json_object_object_add(section_ir, "ccixSourceID", 32 json_object_new_int(ccix_error->CcixSourceId)); 33 json_object_object_add(section_ir, "ccixPortID", 34 json_object_new_int(ccix_error->CcixPortId)); 35 36 //CCIX PER Log. 37 //This is formatted as described in Section 7.3.2 of CCIX Base Specification (Rev 1.0). 38 const char *cur_pos = (const char *)(ccix_error + 1); 39 int remaining_length = 40 ccix_error->Length - sizeof(EFI_CCIX_PER_LOG_DATA); 41 if (remaining_length > 0) { 42 char *encoded = malloc(2 * remaining_length); 43 size_t encoded_len = 0; 44 if (!encoded) { 45 printf("Failed to allocate encode output buffer. \n"); 46 } else { 47 base64_encode((const char *)cur_pos, remaining_length, 48 encoded, &encoded_len, 0); 49 json_object_object_add(section_ir, "ccixPERLog", 50 json_object_new_string_len( 51 encoded, encoded_len)); 52 free(encoded); 53 } 54 } 55 56 return section_ir; 57 } 58 59 //Converts a single CCIX PER CPER-JSON section into CPER binary, outputting to the given stream. 60 void ir_section_ccix_per_to_cper(json_object *section, FILE *out) 61 { 62 EFI_CCIX_PER_LOG_DATA *section_cper = (EFI_CCIX_PER_LOG_DATA *)calloc( 63 1, sizeof(EFI_CCIX_PER_LOG_DATA)); 64 65 //Length. 66 section_cper->Length = json_object_get_uint64( 67 json_object_object_get(section, "length")); 68 69 //Validation bits. 70 section_cper->ValidBits = ir_to_bitfield( 71 json_object_object_get(section, "validationBits"), 3, 72 CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 73 74 //CCIX source/port IDs. 75 section_cper->CcixSourceId = (UINT8)json_object_get_int( 76 json_object_object_get(section, "ccixSourceID")); 77 section_cper->CcixPortId = (UINT8)json_object_get_int( 78 json_object_object_get(section, "ccixPortID")); 79 80 //Write header out to stream. 81 fwrite(section_cper, sizeof(EFI_CCIX_PER_LOG_DATA), 1, out); 82 fflush(out); 83 84 //Write CCIX PER log itself to stream. 85 json_object *encoded = json_object_object_get(section, "ccixPERLog"); 86 char *decoded = malloc(json_object_get_string_len(encoded)); 87 size_t decoded_len = 0; 88 if (!decoded) { 89 printf("Failed to allocate decode output buffer. \n"); 90 } else { 91 base64_decode(json_object_get_string(encoded), 92 json_object_get_string_len(encoded), decoded, 93 &decoded_len, 0); 94 fwrite(decoded, decoded_len, 1, out); 95 fflush(out); 96 } 97 98 //Free resources. 99 free(decoded); 100 free(section_cper); 101 } 102