1*de9707f9SLawrence Tang /** 2*de9707f9SLawrence Tang * Functions for generating psuedo-random CCIX PER error sections. 3*de9707f9SLawrence Tang * 4*de9707f9SLawrence Tang * Author: Lawrence.Tang@arm.com 5*de9707f9SLawrence Tang **/ 6*de9707f9SLawrence Tang 7*de9707f9SLawrence Tang #include <stdlib.h> 8*de9707f9SLawrence Tang #include "../../edk/BaseTypes.h" 9*de9707f9SLawrence Tang #include "../gen-utils.h" 10*de9707f9SLawrence Tang #include "gen-sections.h" 11*de9707f9SLawrence Tang 12*de9707f9SLawrence Tang //Generates a single psuedo-random CCIX PER error section, saving the resulting address to the given 13*de9707f9SLawrence Tang //location. Returns the size of the newly created section. 14*de9707f9SLawrence Tang size_t generate_section_ccix_per(void** location) 15*de9707f9SLawrence Tang { 16*de9707f9SLawrence Tang //Create a random length for the CCIX PER log. 17*de9707f9SLawrence Tang //The log attached here does not necessarily conform to the CCIX specification, and is simply random. 18*de9707f9SLawrence Tang int log_len = (rand() % 5 + 1) * 32; 19*de9707f9SLawrence Tang 20*de9707f9SLawrence Tang //Create random bytes. 21*de9707f9SLawrence Tang int size = 16 + log_len; 22*de9707f9SLawrence Tang UINT8* bytes = generate_random_bytes(size); 23*de9707f9SLawrence Tang 24*de9707f9SLawrence Tang //Set reserved areas to zero. 25*de9707f9SLawrence Tang UINT64* validation = (UINT64*)(bytes + 4); 26*de9707f9SLawrence Tang *validation &= 0b111; //Validation bits 3-63. 27*de9707f9SLawrence Tang *(bytes + 13) &= 0b11111; //CCIX port ID bits 5-7. 28*de9707f9SLawrence Tang UINT16* reserved = (UINT16*)(bytes + 14); 29*de9707f9SLawrence Tang *reserved = 0; //Reserved bytes 14-15. 30*de9707f9SLawrence Tang 31*de9707f9SLawrence Tang //Set return values, exit. 32*de9707f9SLawrence Tang *location = bytes; 33*de9707f9SLawrence Tang return size; 34*de9707f9SLawrence Tang }