1 /** 2 * Functions for generating pseudo-random CXL 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 CXL component error section, saving the resulting address to the given 13 //location. Returns the size of the newly created section. generate_section_cxl_component(void ** location,GEN_VALID_BITS_TEST_TYPE validBitsType)14size_t generate_section_cxl_component(void **location, 15 GEN_VALID_BITS_TEST_TYPE validBitsType) 16 { 17 //Create a random length for the CXL component event log. 18 //The logs attached here do not necessarily conform to the specification, and are simply random. 19 int log_len = cper_rand() % 64; 20 21 //Create random bytes. 22 int size = 32 + log_len; 23 UINT8 *bytes = generate_random_bytes(size); 24 25 //Set reserved areas to zero. 26 UINT32 *validation = (UINT32 *)(bytes + 4); 27 *validation &= 0x7; 28 if (validBitsType == ALL_VALID) { 29 *validation = 0x7; 30 } else if (validBitsType == SOME_VALID) { 31 *validation = 0x5; 32 } 33 *(validation + 1) = 0; 34 UINT8 *slot_number = (UINT8 *)(bytes + 21); 35 *slot_number &= ~0x7; //Device ID slot number bits 0-2. 36 *(bytes + 23) = 0; //Device ID byte 11. 37 38 //Set expected values. 39 UINT32 *length = (UINT32 *)bytes; 40 *length = size; 41 42 //Set return values, exit. 43 *location = bytes; 44 return size; 45 } 46