1de9707f9SLawrence Tang /** 2efe17e2cSLawrence Tang * Functions for generating pseudo-random CPER PCI component error sections. 3de9707f9SLawrence Tang * 4de9707f9SLawrence Tang * Author: Lawrence.Tang@arm.com 5de9707f9SLawrence Tang **/ 6de9707f9SLawrence Tang 7de9707f9SLawrence Tang #include <stdlib.h> 8de9707f9SLawrence Tang #include "../../edk/BaseTypes.h" 9de9707f9SLawrence Tang #include "../gen-utils.h" 108f977457SLawrence Tang #include "gen-section.h" 11de9707f9SLawrence Tang 12efe17e2cSLawrence Tang //Generates a single pseudo-random PCI component error section, saving the resulting address to the given 13de9707f9SLawrence Tang //location. Returns the size of the newly created section. 14de9707f9SLawrence Tang size_t generate_section_pci_dev(void **location) 15de9707f9SLawrence Tang { 16de9707f9SLawrence Tang //Generate how many register pairs will be attached to this section. 17de9707f9SLawrence Tang UINT32 num_memory_pairs = rand() % 4; 18de9707f9SLawrence Tang UINT32 num_io_pairs = rand() % 4; 19de9707f9SLawrence Tang UINT32 num_registers = num_memory_pairs + num_io_pairs; 20de9707f9SLawrence Tang 21de9707f9SLawrence Tang //Create random bytes. 22de9707f9SLawrence Tang int size = 40 + (num_registers * 16); 23de9707f9SLawrence Tang UINT8 *bytes = generate_random_bytes(size); 24de9707f9SLawrence Tang 25de9707f9SLawrence Tang //Set reserved areas to zero. 26de9707f9SLawrence Tang UINT64 *validation = (UINT64 *)bytes; 27*f8fc7052SJohn Chung *validation &= 0x1F; //Validation 5-63 28*f8fc7052SJohn Chung for (int i = 0; i < 5; i++) { 29de9707f9SLawrence Tang *(bytes + 27 + i) = 0; //Bytes 11-15 of ID info. 30*f8fc7052SJohn Chung } 31d34f2b11SLawrence Tang 32d34f2b11SLawrence Tang //Set expected values. 33d34f2b11SLawrence Tang UINT32 *memory_number_field = (UINT32 *)(bytes + 32); 34d34f2b11SLawrence Tang UINT32 *io_number_field = (UINT32 *)(bytes + 36); 35d34f2b11SLawrence Tang *memory_number_field = num_memory_pairs; 36d34f2b11SLawrence Tang *io_number_field = num_io_pairs; 37de9707f9SLawrence Tang 38de9707f9SLawrence Tang //Fix error status. 39de9707f9SLawrence Tang create_valid_error_section(bytes + 8); 40de9707f9SLawrence Tang 41de9707f9SLawrence Tang //Set return values, exit. 42de9707f9SLawrence Tang *location = bytes; 43de9707f9SLawrence Tang return size; 44de9707f9SLawrence Tang } 45