RAMDisk and DOSFS example program wanted

[Chris Johns]

Joel Sherrill <joel at OARcorp.com> wrote:
> 
> I recall someone having posted these before but can't seem to find
> them.  I would greatly appreciate it if they could be sent to me again.
> 

I assume you are looking for the driver, and file system initialisation. 
If you need a test program try bonnie. I uploaded it to the ftp site a 
while ago.

The following assumes a custom IDE interface to the device:

ide_ctrl_fns_t my_ide_ctrl_fns =
{
   my_ide_probe,
   my_ide_initialise,
   my_ide_control,
   my_ide_read_reg,
   my_ide_write_reg,
   my_ide_read_block,
   my_ide_write_block,
   my_ide_config_io_speed
};

/*
  * IDE controllers Table
  */

ide_controller_bsp_table_t IDE_Controller_Table[] =
{
   {
     "/dev/ide",
     IDE_STD,           /* standard IDE controller */
     &my_ide_ctrl_fns,
     NULL,              /* probe for IDE standard registers */
     FALSE,             /* not (yet) initialized */
     0,                 /* base I/O address for first IDE controller */
     FALSE,0,           /* not (yet) interrupt driven */
     NULL
   }
};

unsigned long IDE_Controller_Count = 1;

static rtems_filesystem_mount_table_entry_t *mt_entry;

extern rtems_filesystem_operations_table msdos_ops;

rtems_bdbuf_config rtems_bdbuf_configuration[] =
{
   { 512, 20, 0 }
};

int rtems_bdbuf_configuration_size = 1;

static rtems_device_major_number ide_major;
static rtems_device_major_number ata_major;

#define MKDIR_MODE  (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)

void Init (void)
{
     /*
      * Create a node to mount the disk on.
      */
     if (rtems_rootfs_mkdir ("/hda", MKDIR_MODE) < 0)
       printf ("ide: could not create the mount point\n");

     /*
      * Initialise the IDE controller.
      */
     sc = rtems_io_register_driver (7, &ide_drv, &ide_major);
     if (sc != RTEMS_SUCCESSFUL)
     {
       printf ("ide: could not register the IDE driver: %s\n",
               rtems_status_text (sc));
       return false;
     }

     /*
      * Initialise the ATA controller.
      */
     sc = rtems_io_register_driver (8, &ata_drv, &ata_major);
     if (sc != RTEMS_SUCCESSFUL)
     {
       printf ("ide: could not register the ATA driver: %s\n",
               rtems_status_text (sc));
       return false;
     }

     /*
      * Initialise the IDE partition table.
      */
     sc = rtems_ide_part_table_initialize ("/dev/hda");
     if (sc != RTEMS_SUCCESSFUL)
     {
       printf ("ide: failed to read the partition table: %s\n",
               rtems_status_text (sc));
       return false;
     }

     /*
      * Mount the partition.
      */
     if (mount (&mt_entry, &msdos_ops, RTEMS_FILESYSTEM_READ_WRITE,
                "/dev/hda1", "/hda") < 0)
     {
       printf ("ide: could not mount hda: %s\n",
               strerror (errno));
       return false;
     }
   }

}

-- 
  Chris Johns