1 /** 2 * Functions for generating pseudo-random CCIX PER 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-sections.h" 11 12 //Generates a single pseudo-random CCIX PER error section, saving the resulting address to the given 13 //location. Returns the size of the newly created section. 14 size_t generate_section_ccix_per(void** location) 15 { 16 //Create a random length for the CCIX PER log. 17 //The log attached here does not necessarily conform to the CCIX specification, and is simply random. 18 int log_len = (rand() % 5 + 1) * 32; 19 20 //Create random bytes. 21 int size = 16 + 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; //Validation bits 3-63. 27 *(bytes + 13) &= 0b11111; //CCIX port ID bits 5-7. 28 UINT16* reserved = (UINT16*)(bytes + 14); 29 *reserved = 0; //Reserved bytes 14-15. 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 }