1de9707f9SLawrence Tang /** 2de9707f9SLawrence Tang * Functions for generating psuedo-random CPER DMAr 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" 10de9707f9SLawrence Tang #include "gen-sections.h" 11de9707f9SLawrence Tang 12de9707f9SLawrence Tang //Generates a single psuedo-random generic DMAr error section, saving the resulting address to the given 13de9707f9SLawrence Tang //location. Returns the size of the newly created section. 14de9707f9SLawrence Tang size_t generate_section_dmar_generic(void** location) 15de9707f9SLawrence Tang { 16de9707f9SLawrence Tang //Create random bytes. 17de9707f9SLawrence Tang int size = 32; 18de9707f9SLawrence Tang UINT8* bytes = generate_random_bytes(size); 19de9707f9SLawrence Tang 20de9707f9SLawrence Tang //Set reserved areas to zero. 21de9707f9SLawrence Tang UINT64* reserved = (UINT64*)(bytes + 16); 22de9707f9SLawrence Tang *reserved = 0; 23de9707f9SLawrence Tang *(reserved + 1) = 0; 24de9707f9SLawrence Tang 25de9707f9SLawrence Tang //Set expected values. 26de9707f9SLawrence Tang *(bytes + 4) = rand() % 0xC; //Fault reason. 27de9707f9SLawrence Tang *(bytes + 5) = rand() % 2; //Access type. 28de9707f9SLawrence Tang *(bytes + 6) = rand() % 2; //Address type. 29de9707f9SLawrence Tang *(bytes + 7) = rand() % 2 + 1; //Architecture type. 30de9707f9SLawrence Tang 31de9707f9SLawrence Tang //Set return values, exit. 32de9707f9SLawrence Tang *location = bytes; 33de9707f9SLawrence Tang return size; 34de9707f9SLawrence Tang } 35de9707f9SLawrence Tang 36de9707f9SLawrence Tang //Generates a single psuedo-random VT-d DMAr error section, saving the resulting address to the given 37de9707f9SLawrence Tang //location. Returns the size of the newly created section. 38de9707f9SLawrence Tang size_t generate_section_dmar_vtd(void** location) 39de9707f9SLawrence Tang { 40de9707f9SLawrence Tang //Create random bytes. 41de9707f9SLawrence Tang int size = 144; 42de9707f9SLawrence Tang UINT8* bytes = generate_random_bytes(size); 43de9707f9SLawrence Tang 44de9707f9SLawrence Tang //Set reserved areas to zero. 45de9707f9SLawrence Tang for (int i=0; i<12; i++) 46de9707f9SLawrence Tang *(bytes + 36 + i) = 0; //Reserved bytes 36-47. 47*0a4b3f2dSLawrence Tang UINT8* fault_record = bytes + 48; 48*0a4b3f2dSLawrence Tang UINT32* reserved = (UINT32*)(fault_record); 49*0a4b3f2dSLawrence Tang *reserved &= ~0xFFF; //First 12 bits of fault record. 50*0a4b3f2dSLawrence Tang reserved = (UINT32*)(fault_record + 10); 51*0a4b3f2dSLawrence Tang *reserved &= ~0x1FFF; //Bits 80-92 of fault record. 52*0a4b3f2dSLawrence Tang *(fault_record + 15) &= 0x7; //Very last bit of fault record. 53de9707f9SLawrence Tang 54de9707f9SLawrence Tang //Set return values, exit. 55de9707f9SLawrence Tang *location = bytes; 56de9707f9SLawrence Tang return size; 57de9707f9SLawrence Tang } 58de9707f9SLawrence Tang 59de9707f9SLawrence Tang //Generates a single psuedo-random IOMMU DMAr error section, saving the resulting address to the given 60de9707f9SLawrence Tang //location. Returns the size of the newly created section. 61de9707f9SLawrence Tang size_t generate_section_dmar_iommu(void** location) 62de9707f9SLawrence Tang { 63de9707f9SLawrence Tang //Create random bytes. 64de9707f9SLawrence Tang int size = 144; 65de9707f9SLawrence Tang UINT8* bytes = generate_random_bytes(size); 66de9707f9SLawrence Tang 67de9707f9SLawrence Tang //Set reserved areas to zero. 68de9707f9SLawrence Tang for (int i=0; i<7; i++) 69*0a4b3f2dSLawrence Tang *(bytes + 1 + i) = 0; //Reserved bytes 1 to 7. 70de9707f9SLawrence Tang UINT64* reserved = (UINT64*)(bytes + 24); 71de9707f9SLawrence Tang *reserved = 0; //Reserved bytes 24-31. 72de9707f9SLawrence Tang for (int i=0; i<16; i++) 73de9707f9SLawrence Tang *(bytes + 48 + i) = 0; //Reserved bytes 48-63. 74de9707f9SLawrence Tang 75de9707f9SLawrence Tang //Set return values, exit. 76de9707f9SLawrence Tang *location = bytes; 77de9707f9SLawrence Tang return size; 78de9707f9SLawrence Tang }