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 "../../edk/BaseTypes.h"
9 #include "../gen-utils.h"
10 #include "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)14 size_t generate_section_ccix_per(void **location)
15 {
16 	//Create a random length for the CCIX PER log.
17 	//The log attached here does not necessarily conform to the CCIX specification, and is simply random.
18 	int log_len = (rand() % 5 + 1) * 32;
19 
20 	//Create random bytes.
21 	int size = 16 + log_len;
22 	UINT8 *bytes = generate_random_bytes(size);
23 
24 	//Set reserved areas to zero.
25 	UINT32 *validation = (UINT32 *)(bytes + 4);
26 	*validation &= 0x7;    //Validation bits 3-63.
27 	*(validation + 1) = 0; //Validation bits 3-63.
28 	*(bytes + 13) &= 0x1F; //CCIX port ID bits 5-7.
29 	UINT16 *reserved = (UINT16 *)(bytes + 14);
30 	*reserved = 0;	       //Reserved bytes 14-15.
31 
32 	//Set expected values.
33 	UINT32 *length = (UINT32 *)bytes;
34 	*length = size;
35 
36 	//Set return values, exit.
37 	*location = bytes;
38 	return size;
39 }
40