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 "b64.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, EFI_ERROR_SECTION_DESCRIPTOR* descriptor) 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", json_object_new_uint64(ccix_error->Length)); 23 24 //Validation bits. 25 json_object* validation = bitfield_to_ir(ccix_error->ValidBits, 3, CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 26 json_object_object_add(section_ir, "validationBits", validation); 27 28 //CCIX source/port IDs. 29 json_object_object_add(section_ir, "ccixSourceID", json_object_new_int(ccix_error->CcixSourceId)); 30 json_object_object_add(section_ir, "ccixPortID", json_object_new_int(ccix_error->CcixPortId)); 31 32 //CCIX PER Log. 33 //This is formatted as described in Section 7.3.2 of CCIX Base Specification (Rev 1.0). 34 unsigned char* cur_pos = (unsigned char*)(ccix_error + 1); 35 int remaining_length = ccix_error->Length - sizeof(ccix_error); 36 if (remaining_length > 0) 37 { 38 char* encoded = b64_encode(cur_pos, remaining_length); 39 json_object_object_add(section_ir, "ccixPERLog", json_object_new_string(encoded)); 40 free(encoded); 41 } 42 43 return section_ir; 44 } 45 46 //Converts a single CCIX PER CPER-JSON section into CPER binary, outputting to the given stream. 47 void ir_section_ccix_per_to_cper(json_object* section, FILE* out) 48 { 49 EFI_CCIX_PER_LOG_DATA* section_cper = 50 (EFI_CCIX_PER_LOG_DATA*)calloc(1, sizeof(EFI_CCIX_PER_LOG_DATA)); 51 52 //Length. 53 section_cper->Length = json_object_get_uint64(json_object_object_get(section, "length")); 54 55 //Validation bits. 56 section_cper->ValidBits = ir_to_bitfield(json_object_object_get(section, "validationBits"), 57 3, CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 58 59 //CCIX source/port IDs. 60 section_cper->CcixSourceId = (UINT8)json_object_get_int(json_object_object_get(section, "ccixSourceID")); 61 section_cper->CcixPortId = (UINT8)json_object_get_int(json_object_object_get(section, "ccixPortID")); 62 63 //Write header out to stream. 64 fwrite(§ion_cper, sizeof(section_cper), 1, out); 65 fflush(out); 66 67 //Write CCIX PER log itself to stream. 68 json_object* encoded = json_object_object_get(section, "ccixPERLog"); 69 UINT8* decoded = b64_decode(json_object_get_string(encoded), json_object_get_string_len(encoded)); 70 fwrite(decoded, section_cper->Length - sizeof(section_cper), 1, out); 71 fflush(out); 72 73 //Free resources. 74 free(decoded); 75 free(section_cper); 76 }