102c801a5SLawrence Tang /** 2efe17e2cSLawrence Tang * Functions for generating pseudo-random CPER generic processor sections. 302c801a5SLawrence Tang * 402c801a5SLawrence Tang * Author: Lawrence.Tang@arm.com 502c801a5SLawrence Tang **/ 602c801a5SLawrence Tang 702c801a5SLawrence Tang #include <stdlib.h> 802c801a5SLawrence Tang #include "../../edk/BaseTypes.h" 902c801a5SLawrence Tang #include "../gen-utils.h" 10*8f977457SLawrence Tang #include "gen-section.h" 1102c801a5SLawrence Tang 12efe17e2cSLawrence Tang //Generates a single pseudo-random generic processor section, saving the resulting address to the given 1302c801a5SLawrence Tang //location. Returns the size of the newly created section. 1402c801a5SLawrence Tang size_t generate_section_generic(void** location) 1502c801a5SLawrence Tang { 1602c801a5SLawrence Tang //Create random bytes. 1702c801a5SLawrence Tang size_t size = generate_random_section(location, 192); 1802c801a5SLawrence Tang 1902c801a5SLawrence Tang //Set reserved locations to zero. 2002c801a5SLawrence Tang UINT8* start_byte = (UINT8*)*location; 2102c801a5SLawrence Tang *((UINT64*)start_byte) &= 0xFFF; 2202c801a5SLawrence Tang *(start_byte + 12) &= 0b111; 2302c801a5SLawrence Tang *((UINT16*)(start_byte + 14)) = 0x0; 2402c801a5SLawrence Tang 25aacf0e26SLawrence Tang //Ensure CPU brand string does not terminate early. 26aacf0e26SLawrence Tang for (int i=0; i<128; i++) 27aacf0e26SLawrence Tang { 28aacf0e26SLawrence Tang UINT8* byte = start_byte + 24 + i; 29aacf0e26SLawrence Tang if (*byte == 0x0) 30aacf0e26SLawrence Tang *byte = rand() % 127 + 1; 31aacf0e26SLawrence Tang 32aacf0e26SLawrence Tang //Null terminate last byte. 33aacf0e26SLawrence Tang if (i == 127) 34aacf0e26SLawrence Tang *byte = 0x0; 35aacf0e26SLawrence Tang } 36aacf0e26SLawrence Tang 3702c801a5SLawrence Tang return size; 3802c801a5SLawrence Tang }