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 * 17 cper_section_ccix_per_to_ir(void *section, 18 EFI_ERROR_SECTION_DESCRIPTOR *descriptor) 19 { 20 EFI_CCIX_PER_LOG_DATA *ccix_error = (EFI_CCIX_PER_LOG_DATA *)section; 21 json_object *section_ir = json_object_new_object(); 22 23 //Length (bytes) for the entire structure. 24 json_object_object_add(section_ir, "length", 25 json_object_new_uint64(ccix_error->Length)); 26 27 //Validation bits. 28 json_object *validation = bitfield_to_ir( 29 ccix_error->ValidBits, 3, CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 30 json_object_object_add(section_ir, "validationBits", validation); 31 32 //CCIX source/port IDs. 33 json_object_object_add(section_ir, "ccixSourceID", 34 json_object_new_int(ccix_error->CcixSourceId)); 35 json_object_object_add(section_ir, "ccixPortID", 36 json_object_new_int(ccix_error->CcixPortId)); 37 38 //CCIX PER Log. 39 //This is formatted as described in Section 7.3.2 of CCIX Base Specification (Rev 1.0). 40 unsigned char *cur_pos = (unsigned char *)(ccix_error + 1); 41 int remaining_length = 42 ccix_error->Length - sizeof(EFI_CCIX_PER_LOG_DATA); 43 if (remaining_length > 0) { 44 char *encoded = b64_encode(cur_pos, remaining_length); 45 json_object_object_add(section_ir, "ccixPERLog", 46 json_object_new_string(encoded)); 47 free(encoded); 48 } 49 50 return section_ir; 51 } 52 53 //Converts a single CCIX PER CPER-JSON section into CPER binary, outputting to the given stream. 54 void ir_section_ccix_per_to_cper(json_object *section, FILE *out) 55 { 56 EFI_CCIX_PER_LOG_DATA *section_cper = (EFI_CCIX_PER_LOG_DATA *)calloc( 57 1, sizeof(EFI_CCIX_PER_LOG_DATA)); 58 59 //Length. 60 section_cper->Length = json_object_get_uint64( 61 json_object_object_get(section, "length")); 62 63 //Validation bits. 64 section_cper->ValidBits = ir_to_bitfield( 65 json_object_object_get(section, "validationBits"), 3, 66 CCIX_PER_ERROR_VALID_BITFIELD_NAMES); 67 68 //CCIX source/port IDs. 69 section_cper->CcixSourceId = (UINT8)json_object_get_int( 70 json_object_object_get(section, "ccixSourceID")); 71 section_cper->CcixPortId = (UINT8)json_object_get_int( 72 json_object_object_get(section, "ccixPortID")); 73 74 //Write header out to stream. 75 fwrite(section_cper, sizeof(EFI_CCIX_PER_LOG_DATA), 1, out); 76 fflush(out); 77 78 //Write CCIX PER log itself to stream. 79 json_object *encoded = json_object_object_get(section, "ccixPERLog"); 80 UINT8 *decoded = b64_decode(json_object_get_string(encoded), 81 json_object_get_string_len(encoded)); 82 fwrite(decoded, section_cper->Length - sizeof(EFI_CCIX_PER_LOG_DATA), 1, 83 out); 84 fflush(out); 85 86 //Free resources. 87 free(decoded); 88 free(section_cper); 89 }