cfe_psp_start.c

/************************************************************************
 * NASA Docket No. GSC-18,719-1, and identified as “core Flight System: Bootes”
 *
 * Copyright (c) 2020 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License. You may obtain
 * a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ************************************************************************/

/******************************************************************************
** File:  cfe_psp_start.c
**
** Purpose:
**   cFE BSP main entry point.
**
**
******************************************************************************/
#define _USING_RTEMS_INCLUDES_

/*
**  Include Files
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <rtems.h>
#include <rtems/rtems_bsdnet.h>
#include <rtems/rtems_dhcp_failsafe.h>
#include <bsp.h>

extern int rtems_fxp_attach(struct rtems_bsdnet_ifconfig *config, int attaching);

/*
** cFE includes
*/
#include "common_types.h"
#include "osapi.h"
#include "cfe_psp.h"
#include "cfe_psp_memory.h"
#include "cfe_psp_module.h"

/*
 * The preferred way to obtain the CFE tunable values at runtime is via
 * the dynamically generated configuration object.  This allows a single build
 * of the PSP to be completely CFE-independent.
 */
#include "target_config.h"

#define CFE_PSP_MAIN_FUNCTION       (*GLOBAL_CONFIGDATA.CfeConfig->SystemMain)
#define CFE_PSP_NONVOL_STARTUP_FILE (GLOBAL_CONFIGDATA.CfeConfig->NonvolStartupFile)

/*
** Global variables
*/

rtems_id RtemsTimerId;

static unsigned char ethernet_address[6] = {0x00, 0x04, 0x9F, 0x00, 0x27, 0x61};
static char          net_name_str[]      = "fxp1";
static char          ip_addr_str[]       = "10.0.2.17";
static char          ip_netmask_str[]    = "255.255.255.0";

static struct rtems_bsdnet_ifconfig netdriver_config = {
    .name             = net_name_str,
    .attach           = rtems_fxp_attach,
    .next             = NULL,
    .ip_address       = ip_addr_str,
    .ip_netmask       = ip_netmask_str,
    .hardware_address = ethernet_address
    /* more options can follow */
};

struct rtems_bsdnet_config rtems_bsdnet_config = {
    .ifconfig = &netdriver_config, .bootp = rtems_bsdnet_do_dhcp_failsafe, /* fill if DHCP is used*/
};

/*
** 1 HZ Timer "ISR"
*/
int timer_count = 0;

/******************************************************************************
**
**  Purpose:
**    Perform initial setup.
**
**    This function is invoked before OSAL is initialized.
**      NO OSAL CALLS SHOULD BE USED YET.
**
**    The root file system is created, and mount points are created and mounted:
**     - /ram as ramdisk (RFS), read-write
**     - /boot from /dev/hda1, read-only, contain the boot executable(s) (CFE core)
**
**  Arguments:
**    (none)
**
**  Return:
**    OS error code.  RTEMS_SUCCESSFUL if everything worked.
**
**  Note:
**    If this fails then CFE will not run properly, so a non-success here should
**    stop the boot so the issue can be fixed.  Trying to continue booting usually
**    just obfuscates the issue when something does not work later on.
*/
int CFE_PSP_Setup(void)
{
    rtems_status_code status;

    /*
     * Initialize the network.  This is also optional and only
     * works if an appropriate network device is present.
     */
    status = rtems_bsdnet_initialize_network();
    if (status != RTEMS_SUCCESSFUL)
    {
        printf("Network init not successful: %s / %s (continuing)\n", rtems_status_text(status), strerror(errno));
    }

    return RTEMS_SUCCESSFUL;
}

/*
** A simple entry point to start from the BSP loader
**
** This entry point is used when building an RTEMS+CFE monolithic
** image, which is a single executable containing the RTEMS
** kernel and Core Flight Executive in one file.  In this mode
** the RTEMS BSP invokes the "Init" function directly.
**
** This sets up the root fs and the shell prior to invoking CFE via
** the CFE_PSP_Main() routine.
**
** In a future version this code may be moved into a separate bsp
** integration unit to be more symmetric with the VxWorks implementation.
*/
void OS_Application_Startup(void)
{
    if (CFE_PSP_Setup() != RTEMS_SUCCESSFUL)
    {
        CFE_PSP_Panic(CFE_PSP_ERROR);
    }

    /*
    ** Run the PSP Main - this will return when init is complete
    */
    CFE_PSP_Main();
}

/******************************************************************************
**
**  Purpose:
**    Application entry point.
**
**    The basic RTEMS system including the root FS and shell (if used) should
**    be running prior to invoking this function.
**
**    This entry point is used when building a separate RTEMS kernel/platform
**    boot image and Core Flight Executive image.  This is the type of deployment
**    used on e.g. VxWorks platforms.
**
**  Arguments:
**    (none)
**
**  Return:
**    (none)
*/

void CFE_PSP_Main(void)
{
    uint32    reset_type;
    uint32    reset_subtype;
    osal_id_t fs_id;
    int32     Status;

    /*
    ** Initialize the OS API
    */
    Status = OS_API_Init();
    if (Status != OS_SUCCESS)
    {
        /* irrecoverable error if OS_API_Init() fails. */
        /* note: use printf here, as OS_printf may not work */
        printf("CFE_PSP: OS_API_Init() failure\n");
        CFE_PSP_Panic(Status);
    }

    /*
     * Initialize the CFE reserved memory map
     */
    CFE_PSP_SetupReservedMemoryMap();

    /*
    ** Set up the virtual FS mapping for the "/cf" directory
    */
    Status = OS_FileSysAddFixedMap(&fs_id, "/mnt/eeprom", "/cf");
    if (Status != OS_SUCCESS)
    {
        /* Print for informational purposes --
         * startup can continue, but loads may fail later, depending on config. */
        OS_printf("CFE_PSP: OS_FileSysAddFixedMap() failure: %d\n", (int)Status);
    }

    /*
    ** Initialize the statically linked modules (if any)
    */
    CFE_PSP_ModuleInit();

    /*
    ** Determine Reset type by reading the hardware reset register.
    */
    reset_type    = CFE_PSP_RST_TYPE_POWERON;
    reset_subtype = CFE_PSP_RST_SUBTYPE_POWER_CYCLE;

    /*
    ** Initialize the reserved memory
    */
    CFE_PSP_InitProcessorReservedMemory(reset_type);

    /*
    ** Call cFE entry point. This will return when cFE startup
    ** is complete.
    */
    CFE_PSP_MAIN_FUNCTION(reset_type, reset_subtype, 1, CFE_PSP_NONVOL_STARTUP_FILE);
}