1de9707f9SLawrence Tang /** 2efe17e2cSLawrence Tang * Functions for generating pseudo-random CXL component error sections. 3de9707f9SLawrence Tang * 4de9707f9SLawrence Tang * Author: Lawrence.Tang@arm.com 5de9707f9SLawrence Tang **/ 6de9707f9SLawrence Tang 7de9707f9SLawrence Tang #include <stdlib.h> 8de9707f9SLawrence Tang #include "../../edk/BaseTypes.h" 9de9707f9SLawrence Tang #include "../gen-utils.h" 108f977457SLawrence Tang #include "gen-section.h" 11de9707f9SLawrence Tang 12efe17e2cSLawrence Tang //Generates a single pseudo-random CXL component error section, saving the resulting address to the given 13de9707f9SLawrence Tang //location. Returns the size of the newly created section. generate_section_cxl_component(void ** location)14de9707f9SLawrence Tangsize_t generate_section_cxl_component(void **location) 15de9707f9SLawrence Tang { 16de9707f9SLawrence Tang //Create a random length for the CXL component event log. 17de9707f9SLawrence Tang //The logs attached here do not necessarily conform to the specification, and are simply random. 18de9707f9SLawrence Tang int log_len = rand() % 64; 19de9707f9SLawrence Tang 20de9707f9SLawrence Tang //Create random bytes. 21de9707f9SLawrence Tang int size = 32 + log_len; 22de9707f9SLawrence Tang UINT8 *bytes = generate_random_bytes(size); 23de9707f9SLawrence Tang 24de9707f9SLawrence Tang //Set reserved areas to zero. 25*f8fc7052SJohn Chung UINT32 *validation = (UINT32 *)(bytes + 4); 26*f8fc7052SJohn Chung *validation &= 0x7; 27*f8fc7052SJohn Chung *(validation + 1) = 0; 28*f8fc7052SJohn Chung UINT8 *slot_number = (UINT8 *)(bytes + 21); 29*f8fc7052SJohn Chung *slot_number &= ~0x7; //Device ID slot number bits 0-2. 30de9707f9SLawrence Tang *(bytes + 23) = 0; //Device ID byte 11. 31de9707f9SLawrence Tang 32de9707f9SLawrence Tang //Set expected values. 33de9707f9SLawrence Tang UINT32 *length = (UINT32 *)bytes; 34de9707f9SLawrence Tang *length = size; 35de9707f9SLawrence Tang 36de9707f9SLawrence Tang //Set return values, exit. 37de9707f9SLawrence Tang *location = bytes; 38de9707f9SLawrence Tang return size; 39de9707f9SLawrence Tang } 40