1 /** 2 * Functions for generating pseudo-random CPER PCIe error sections. 3 * 4 * Author: Lawrence.Tang@arm.com 5 **/ 6 7 #include <stdlib.h> 8 #include "../../edk/BaseTypes.h" 9 #include "../gen-utils.h" 10 #include "gen-section.h" 11 12 #define PCIE_PORT_TYPES \ 13 (int[]) \ 14 { \ 15 0, 1, 4, 5, 6, 7, 8, 9, 10 \ 16 } 17 18 //Generates a single pseudo-random PCIe error section, saving the resulting address to the given 19 //location. Returns the size of the newly created section. 20 size_t generate_section_pcie(void **location) 21 { 22 //Create random bytes. 23 int size = 208; 24 UINT8 *bytes = generate_random_bytes(size); 25 26 //Set reserved areas to zero. 27 UINT64 *validation = (UINT64 *)bytes; 28 *validation &= 0xFF; //Validation 8-63 29 UINT32 *version = (UINT32 *)(bytes + 12); 30 *version &= 0xFFFF; //Version bytes 2-3 31 UINT32 *reserved = (UINT32 *)(bytes + 20); 32 *reserved = 0; //Reserved bytes 20-24 33 *(bytes + 37) &= ~0x7; //Device ID byte 13 bits 0-3 34 *(bytes + 39) = 0; //Device ID byte 15 35 36 //Set expected values. 37 int minor = rand() % 128; 38 int major = rand() % 128; 39 *version = int_to_bcd(minor); 40 *version |= int_to_bcd(major) << 8; 41 42 //Fix values that could be above range. 43 UINT32 *port_type = (UINT32 *)(bytes + 8); 44 *port_type = PCIE_PORT_TYPES[rand() % 45 (sizeof(PCIE_PORT_TYPES) / sizeof(int))]; 46 47 //Set return values, exit. 48 *location = bytes; 49 return size; 50 } 51