“Boot_App()”的代码可以在 $J7SDK/ti-processor-sdk-rtos-j721e-evm-xx_xx_xx_xx/mcusw/mcuss_demos/boot_app_mcu_rtos/boot.c 函数 Boot_App() 中找到。

以下是 Boot_App 函数的代码片段。

/* Main Boot task */
static sint32 Boot_App()
{
    sint32          retVal;
    cpu_core_id_t   core_id, *boot_array;
    uint8           i, j, num_cores_to_boot, num_booted_cores = 0;
    
    MainDomainBootSetup();
    SBL_SPI_init();
    SBL_ospiInit(&boardHandle);
    /* Initialize the entry point array to 0.*/
    for (core_id = MPU1_CPU0_ID; core_id < NUM_CORES; core_id ++) {
        (&k3xx_evmEntry)->CpuEntryPoint[core_id] = SBL_INVALID_ENTRY_ADDR;
    }
    for (j = 0; j < NUM_BOOT_STAGES; j++) {
        retVal = RequestStageCores(j);
        if (retVal != CSL_PASS) {
            ReleaseStageCores(j);
        } else {
            retVal = OSPIBootStageImage(&k3xx_evmEntry, ospi_main_domain_flash_rtos_images[j]);
            if (retVal != CSL_PASS){
            } else {
                retVal = ReleaseStageCores(j);
                if (retVal != CSL_PASS) {
                }
            }
        } /* if (retVal != CSL_PASS) */
        if (retVal == CSL_PASS) {
            /* Start the individual cores for the boot stage */
            num_cores_to_boot = num_cores_per_boot_stage[j];
            boot_array        = boot_array_stage[j];

            for (i = 0; i < num_cores_to_boot; i++) {
                core_id = boot_array[i];
                /* Try booting all cores other than the cluster running the SBL */
                if ((k3xx_evmEntry.CpuEntryPoint[core_id] != SBL_INVALID_ENTRY_ADDR) &&
                    ((core_id != MCU1_CPU1_ID) && (core_id != MCU1_CPU0_ID))) {
                    SBL_SlaveCoreBoot(core_id, NULL, &k3xx_evmEntry,SBL_REQUEST_CORE);
                    num_booted_cores++;
                }
            }
        } /* if (retVal == CSL_PASS) */
    } /* for (j = 0; j < NUM_BOOT_STAGES; j++) */

    SBL_ospiClose(&boardHandle);

    return (retVal);
}