1 /** 2 * Functions for generating pseudo-random CPER NVIDIA error sections. 3 * 4 **/ 5 6 #include <stdlib.h> 7 #include <stddef.h> 8 #include <string.h> 9 #include <stdio.h> 10 #include <libcper/BaseTypes.h> 11 #include <libcper/generator/gen-utils.h> 12 #include <libcper/generator/sections/gen-section.h> 13 14 //Generates a single pseudo-random NVIDIA error section, saving the resulting address to the given 15 //location. Returns the size of the newly created section. 16 size_t generate_section_nvidia(void **location) 17 { 18 const char *signatures[] = { 19 "DCC-ECC", "DCC-COH", "HSS-BUSY", "HSS-IDLE", 20 "CLink", "C2C", "C2C-IP-FAIL", "L0 RESET", 21 "L1 RESET", "L2 RESET", "PCIe", "PCIe-DPC", 22 "SOCHUB", "CCPLEXSCF", "CMET-NULL", "CMET-SHA256", 23 "CMET-FULL", "DRAM-CHANNELS", "PAGES-RETIRED", "CCPLEXGIC", 24 "MCF", "GPU-STATUS", "GPU-CONTNMT", "SMMU", 25 }; 26 27 init_random(); 28 29 //Create random bytes. 30 int numRegs = 6; 31 size_t size = offsetof(EFI_NVIDIA_ERROR_DATA, Register) + 32 numRegs * sizeof(EFI_NVIDIA_REGISTER_DATA); 33 UINT8 *section = generate_random_bytes(size); 34 35 //Reserved byte. 36 EFI_NVIDIA_ERROR_DATA *nvidia_error = (EFI_NVIDIA_ERROR_DATA *)section; 37 nvidia_error->Reserved = 0; 38 39 //Number of Registers. 40 nvidia_error->NumberRegs = numRegs; 41 42 //Severity (0 to 3 as defined in UEFI spec). 43 nvidia_error->Severity %= 4; 44 45 //Signature. 46 int idx_random = rand() % (sizeof(signatures) / sizeof(signatures[0])); 47 strncpy(nvidia_error->Signature, signatures[idx_random], 48 sizeof(nvidia_error->Signature) - 1); 49 nvidia_error->Signature[sizeof(nvidia_error->Signature) - 1] = '\0'; 50 51 //Set return values, exit. 52 *location = section; 53 return size; 54 } 55