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 <libcper/BaseTypes.h> 9 #include <libcper/generator/gen-utils.h> 10 #include <libcper/generator/sections/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,GEN_VALID_BITS_TEST_TYPE validBitsType)14size_t generate_section_pci_dev(void **location, 15 GEN_VALID_BITS_TEST_TYPE validBitsType) 16 { 17 //Generate how many register pairs will be attached to this section. 18 UINT32 num_memory_pairs = cper_rand() % 4; 19 UINT32 num_io_pairs = cper_rand() % 4; 20 UINT32 num_registers = num_memory_pairs + num_io_pairs; 21 22 //Create random bytes. 23 int size = 40 + (num_registers * 16); 24 UINT8 *bytes = generate_random_bytes(size); 25 26 //Set reserved areas to zero. 27 UINT64 *validation = (UINT64 *)bytes; 28 *validation &= 0x1F; //Validation 5-63 29 if (validBitsType == ALL_VALID) { 30 *validation = 0x1F; 31 } else if (validBitsType == SOME_VALID) { 32 *validation = 0x15; 33 } 34 for (int i = 0; i < 5; i++) { 35 *(bytes + 27 + i) = 0; //Bytes 11-15 of ID info. 36 } 37 38 //Set expected values. 39 UINT32 *memory_number_field = (UINT32 *)(bytes + 32); 40 UINT32 *io_number_field = (UINT32 *)(bytes + 36); 41 *memory_number_field = num_memory_pairs; 42 *io_number_field = num_io_pairs; 43 44 //Fix error status. 45 create_valid_error_section(bytes + 8); 46 47 //Set return values, exit. 48 *location = bytes; 49 return size; 50 } 51