1 /**
2 * Describes functions for converting NVIDIA CPER sections from binary and JSON format
3 * into an intermediate format.
4 **/
5
6 #include <stdio.h>
7 #include <string.h>
8 #include <json.h>
9 #include "../edk/Cper.h"
10 #include "../cper-utils.h"
11 #include "cper-section-nvidia.h"
12
13 //Converts a single NVIDIA CPER section into JSON IR.
cper_section_nvidia_to_ir(void * section)14 json_object *cper_section_nvidia_to_ir(void *section)
15 {
16 EFI_NVIDIA_ERROR_DATA *nvidia_error = (EFI_NVIDIA_ERROR_DATA *)section;
17 json_object *section_ir = json_object_new_object();
18
19 //Signature.
20 json_object_object_add(section_ir, "signature",
21 json_object_new_string(nvidia_error->Signature));
22
23 //Fields.
24 json_object_object_add(section_ir, "errorType",
25 json_object_new_int(nvidia_error->ErrorType));
26 json_object_object_add(
27 section_ir, "errorInstance",
28 json_object_new_int(nvidia_error->ErrorInstance));
29 json_object_object_add(section_ir, "severity",
30 json_object_new_int(nvidia_error->Severity));
31 json_object_object_add(section_ir, "socket",
32 json_object_new_int(nvidia_error->Socket));
33 json_object_object_add(section_ir, "numberRegs",
34 json_object_new_int(nvidia_error->NumberRegs));
35 json_object_object_add(
36 section_ir, "instanceBase",
37 json_object_new_uint64(nvidia_error->InstanceBase));
38
39 // Registers (Address Value pairs).
40 json_object *regarr = json_object_new_array();
41 UINT64 *regPtr = &nvidia_error->InstanceBase;
42 for (int i = 0; i < nvidia_error->NumberRegs; i++) {
43 json_object *reg = json_object_new_object();
44 json_object_object_add(reg, "address",
45 json_object_new_uint64(*++regPtr));
46 json_object_object_add(reg, "value",
47 json_object_new_uint64(*++regPtr));
48 json_object_array_add(regarr, reg);
49 }
50 json_object_object_add(section_ir, "registers", regarr);
51
52 return section_ir;
53 }
54
55 //Converts a single NVIDIA CPER-JSON section into CPER binary, outputting to the given stream.
ir_section_nvidia_to_cper(json_object * section,FILE * out)56 void ir_section_nvidia_to_cper(json_object *section, FILE *out)
57 {
58 json_object *regarr = json_object_object_get(section, "registers");
59 int numRegs = json_object_array_length(regarr);
60
61 size_t section_sz =
62 sizeof(EFI_NVIDIA_ERROR_DATA) + (numRegs * 2 * sizeof(UINT64));
63 EFI_NVIDIA_ERROR_DATA *section_cper =
64 (EFI_NVIDIA_ERROR_DATA *)calloc(1, section_sz);
65
66 //Signature.
67 strncpy(section_cper->Signature,
68 json_object_get_string(
69 json_object_object_get(section, "signature")),
70 sizeof(section_cper->Signature) - 1);
71 section_cper->Signature[sizeof(section_cper->Signature) - 1] = '\0';
72
73 //Fields.
74 section_cper->ErrorType = json_object_get_int(
75 json_object_object_get(section, "errorType"));
76 section_cper->ErrorInstance = json_object_get_int(
77 json_object_object_get(section, "errorInstance"));
78 section_cper->Severity = json_object_get_int(
79 json_object_object_get(section, "severity"));
80 section_cper->Socket =
81 json_object_get_int(json_object_object_get(section, "socket"));
82 section_cper->NumberRegs = json_object_get_int(
83 json_object_object_get(section, "numberRegs"));
84 section_cper->InstanceBase = json_object_get_uint64(
85 json_object_object_get(section, "instanceBase"));
86
87 // Registers (Address Value pairs).
88 UINT64 *regPtr = §ion_cper->InstanceBase;
89 for (int i = 0; i < numRegs; i++) {
90 json_object *reg = json_object_array_get_idx(regarr, i);
91 *++regPtr = json_object_get_uint64(
92 json_object_object_get(reg, "address"));
93 *++regPtr = json_object_get_uint64(
94 json_object_object_get(reg, "value"));
95 }
96
97 //Write to stream, free resources.
98 fwrite(section_cper, section_sz, 1, out);
99 fflush(out);
100 free(section_cper);
101 }
102