1 /**
2  * Functions for generating pseudo-random CPER PCI/PCI-X bus error sections.
3  *
4  * Author: Lawrence.Tang@arm.com
5  **/
6 
7 #include <stdlib.h>
8 #include "../../edk/BaseTypes.h"
9 #include "../gen-utils.h"
10 #include "gen-sections.h"
11 
12 //Generates a single pseudo-random PCI/PCI-X bus error section, saving the resulting address to the given
13 //location. Returns the size of the newly created section.
14 size_t generate_section_pci_bus(void** location)
15 {
16     //Create random bytes.
17     int size = 72;
18     UINT8* bytes = generate_random_bytes(size);
19 
20     //Set reserved areas to zero.
21     UINT64* validation = (UINT64*)bytes;
22     *validation &= 0x1FF; //Validation 9-63
23     UINT32* reserved = (UINT32*)(bytes + 20);
24     *reserved = 0;
25     UINT64* bus_command = (UINT64*)(bytes + 40);
26     *bus_command &= ((UINT64)0b1 << 56); //Bus command bytes bar bit 56.
27 
28     //Fix values that could be above range.
29     UINT16* error_type = (UINT16*)(bytes + 16);
30     *error_type = rand() % 8;
31 
32     //Fix error status.
33     create_valid_error_section(bytes + 8);
34 
35     //Set return values, exit.
36     *location = bytes;
37     return size;
38 }