Function main

freebsd/contrib/octeon-sdk/cvmx-app-init-linux.c:320–446

* Main entrypoint of the application. Here we setup shared * memory and fork processes for each cpu. This simulates the * normal simple executive environment of one process per * cpu core. * * @param argc Number of command line arguments * @param argv The command line arguments * @return Return value for the process */

 * @return Return value for the process
 */
int main(int argc, const char *argv[])
{
    CVMX_SHARED static cvmx_spinlock_t mask_lock = CVMX_SPINLOCK_UNLOCKED_INITIALIZER;
    CVMX_SHARED static int32_t pending_fork;
    unsigned long cpumask;
    unsigned long cpu;
    int firstcpu = 0;
    int firstcore = 0;

    cvmx_linux_enable_xkphys_access(0);
    cvmx_sysinfo_linux_userspace_initialize();

    if (sizeof(void*) == 4)
    {
        if (linux_mem32_min)
            setup_reserve32();
        else
        {
            printf("\nFailed to access 32bit shared memory region. Most likely the Kernel\n"
                   "has not been configured for 32bit shared memory access. Check the\n"
                   "kernel configuration.\n"
                   "Aborting...\n\n");
            exit(-1);
        }
    }

    setup_cvmx_shared();
    cvmx_bootmem_init(cvmx_sysinfo_get()->phy_mem_desc_addr);

    /* Check to make sure the Chip version matches the configured version */
    octeon_model_version_check(cvmx_get_proc_id());

    /* Initialize configuration to set bpid, pkind, pko_port for all the 
       available ports connected. */
    __cvmx_helper_cfg_init();

    /* Get the list of logical cpus we should run on */
    if (sched_getaffinity(0, sizeof(cpumask), (cpu_set_t*)&cpumask))
    {
        perror("sched_getaffinity failed");
        exit(errno);
    }

    cvmx_sysinfo_t *system_info = cvmx_sysinfo_get();

    cvmx_atomic_set32(&pending_fork, 1);

    /* Get the lowest logical cpu */
    firstcore = ffsl(cpumask) - 1;
    cpumask ^= (1ull<<(firstcore));
    while (1)
    {
        if (cpumask == 0)
        {
            cpu = firstcore;
            firstcpu = 1;
            break;
        }