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 <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 CCIX PER error section, saving the resulting address to the given 13 //location. Returns the size of the newly created section. generate_section_ccix_per(void ** location,GEN_VALID_BITS_TEST_TYPE validBitsType)14size_t generate_section_ccix_per(void **location, 15 GEN_VALID_BITS_TEST_TYPE validBitsType) 16 { 17 //Create a random length for the CCIX PER log. 18 //The log attached here does not necessarily conform to the CCIX specification, and is simply random. 19 int log_len = (cper_rand() % 5 + 1) * 32; 20 21 //Create random bytes. 22 int size = 16 + 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; //Validation bits 3-63. 28 *(validation + 1) = 0; //Validation bits 3-63. 29 if (validBitsType == ALL_VALID) { 30 *validation = 0x7; 31 } else if (validBitsType == SOME_VALID) { 32 *validation = 0x5; 33 } 34 *(bytes + 13) &= 0x1F; //CCIX port ID bits 5-7. 35 UINT16 *reserved = (UINT16 *)(bytes + 14); 36 *reserved = 0; //Reserved bytes 14-15. 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