xref: /openbmc/libcper/generator/sections/gen-section-memory.c (revision 8f977457)

/**
 * Functions for generating pseudo-random CPER platform memory error sections.
 *
 * Author: Lawrence.Tang@arm.com
 **/

#include <stdlib.h>
#include "../../edk/BaseTypes.h"
#include "../gen-utils.h"
#include "gen-section.h"

//Generates a single pseudo-random platform memory error section, saving the resulting address to the given
//location. Returns the size of the newly created section.
size_t generate_section_memory(void** location)
{
    //Create random bytes.
    int size = 80;
    UINT8* bytes = generate_random_bytes(size);

    //Set reserved areas to zero.
    UINT64* validation = (UINT64*)bytes;
    *validation &= 0x2FFFFF; //Validation 22-63
    *(bytes + 73) &= ~0b11100; //Extended bits 2-4

    //Fix values that could be above range.
    *(bytes + 72) = rand() % 16; //Memory error type

    //Fix error status.
    create_valid_error_section(bytes + 8);

    //Set return values, exit.
    *location = bytes;
    return size;
}

//Generates a single pseudo-random memory 2 error section, saving the resulting address to the given
//location. Returns the size of the newly created section.
size_t generate_section_memory2(void** location)
{
    //Create random bytes.
    int size = 96;
    UINT8* bytes = generate_random_bytes(size);

    //Set reserved areas to zero.
    UINT64* validation = (UINT64*)bytes;
    *validation &= 0x2FFFFF; //Validation 22-63
    *(bytes + 63) = 0; //Reserved byte 63

    //Fix values that could be above range.
    *(bytes + 61) = rand() % 16; //Memory error type
    *(bytes + 62) = rand() % 2; //Status

    //Fix error status.
    create_valid_error_section(bytes + 8);

    //Set return values, exit.
    *location = bytes;
    return size;
}