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 "../../edk/BaseTypes.h" 9 #include "../gen-utils.h" 10 #include "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. 14 size_t generate_section_cxl_component(void** location) 15 { 16 //Create a random length for the CXL component event log. 17 //The logs attached here do not necessarily conform to the specification, and are simply random. 18 int log_len = rand() % 64; 19 20 //Create random bytes. 21 int size = 32 + log_len; 22 UINT8* bytes = generate_random_bytes(size); 23 24 //Set reserved areas to zero. 25 UINT64* validation = (UINT64*)(bytes + 4); 26 *validation &= 0b111; 27 UINT16* slot_number = (UINT16*)(bytes + 21); 28 *slot_number &= ~0b111; //Device ID slot number bits 0-2. 29 *(bytes + 23) = 0; //Device ID byte 11. 30 31 //Set expected values. 32 UINT32* length = (UINT32*)bytes; 33 *length = size; 34 35 //Set return values, exit. 36 *location = bytes; 37 return size; 38 }