1 /** 2 * Functions for generating pseudo-random CPER PCI component 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 //Generates a single pseudo-random PCI component error section, saving the resulting address to the given 13 //location. Returns the size of the newly created section. generate_section_pci_dev(void ** location)14size_t generate_section_pci_dev(void **location) 15 { 16 //Generate how many register pairs will be attached to this section. 17 UINT32 num_memory_pairs = rand() % 4; 18 UINT32 num_io_pairs = rand() % 4; 19 UINT32 num_registers = num_memory_pairs + num_io_pairs; 20 21 //Create random bytes. 22 int size = 40 + (num_registers * 16); 23 UINT8 *bytes = generate_random_bytes(size); 24 25 //Set reserved areas to zero. 26 UINT64 *validation = (UINT64 *)bytes; 27 *validation &= 0x1F; //Validation 5-63 28 for (int i = 0; i < 5; i++) { 29 *(bytes + 27 + i) = 0; //Bytes 11-15 of ID info. 30 } 31 32 //Set expected values. 33 UINT32 *memory_number_field = (UINT32 *)(bytes + 32); 34 UINT32 *io_number_field = (UINT32 *)(bytes + 36); 35 *memory_number_field = num_memory_pairs; 36 *io_number_field = num_io_pairs; 37 38 //Fix error status. 39 create_valid_error_section(bytes + 8); 40 41 //Set return values, exit. 42 *location = bytes; 43 return size; 44 } 45