1de9707f9SLawrence Tang /**
2efe17e2cSLawrence Tang * Functions for generating pseudo-random CPER PCIe 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
12*f8fc7052SJohn Chung #define PCIE_PORT_TYPES \
13*f8fc7052SJohn Chung (int[]) \
14*f8fc7052SJohn Chung { \
15*f8fc7052SJohn Chung 0, 1, 4, 5, 6, 7, 8, 9, 10 \
16*f8fc7052SJohn Chung }
17de9707f9SLawrence Tang
18efe17e2cSLawrence Tang //Generates a single pseudo-random PCIe error section, saving the resulting address to the given
19de9707f9SLawrence Tang //location. Returns the size of the newly created section.
generate_section_pcie(void ** location)20de9707f9SLawrence Tang size_t generate_section_pcie(void **location)
21de9707f9SLawrence Tang {
22de9707f9SLawrence Tang //Create random bytes.
23de9707f9SLawrence Tang int size = 208;
24de9707f9SLawrence Tang UINT8 *bytes = generate_random_bytes(size);
25de9707f9SLawrence Tang
26de9707f9SLawrence Tang //Set reserved areas to zero.
27de9707f9SLawrence Tang UINT64 *validation = (UINT64 *)bytes;
28de9707f9SLawrence Tang *validation &= 0xFF; //Validation 8-63
29de9707f9SLawrence Tang UINT32 *version = (UINT32 *)(bytes + 12);
30de9707f9SLawrence Tang *version &= 0xFFFF; //Version bytes 2-3
31de9707f9SLawrence Tang UINT32 *reserved = (UINT32 *)(bytes + 20);
32de9707f9SLawrence Tang *reserved = 0; //Reserved bytes 20-24
33*f8fc7052SJohn Chung *(bytes + 37) &= ~0x7; //Device ID byte 13 bits 0-3
34de9707f9SLawrence Tang *(bytes + 39) = 0; //Device ID byte 15
35de9707f9SLawrence Tang
363ab351feSLawrence Tang //Set expected values.
373ab351feSLawrence Tang int minor = rand() % 128;
383ab351feSLawrence Tang int major = rand() % 128;
393ab351feSLawrence Tang *version = int_to_bcd(minor);
403ab351feSLawrence Tang *version |= int_to_bcd(major) << 8;
413ab351feSLawrence Tang
42de9707f9SLawrence Tang //Fix values that could be above range.
43de9707f9SLawrence Tang UINT32 *port_type = (UINT32 *)(bytes + 8);
44*f8fc7052SJohn Chung *port_type = PCIE_PORT_TYPES[rand() %
45*f8fc7052SJohn Chung (sizeof(PCIE_PORT_TYPES) / sizeof(int))];
46de9707f9SLawrence Tang
47de9707f9SLawrence Tang //Set return values, exit.
48de9707f9SLawrence Tang *location = bytes;
49de9707f9SLawrence Tang return size;
50de9707f9SLawrence Tang }
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