/*
* This is the initialization framework routine that weaves together
* calls to RTEMS and the BSP in the proper sequence to initialize
* the system while maximizing shared code and keeping BSP code in C
* as much as possible.
*/
int boot_card(
const char *cmdline
)
{
rtems_interrupt_level bsp_isr_level;
void *work_area_start = NULL;
uintptr_t work_area_size = 0;
void *heap_start = NULL;
uintptr_t heap_size = 0;
/*
* Special case for PowerPC: The interrupt disable mask is stored in SPRG0.
* It must be valid before we can use rtems_interrupt_disable().
*/
#ifdef PPC_INTERRUPT_DISABLE_MASK_DEFAULT
ppc_interrupt_set_disable_mask( PPC_INTERRUPT_DISABLE_MASK_DEFAULT );
#endif /* PPC_INTERRUPT_DISABLE_MASK_DEFAULT */
/*
* Make sure interrupts are disabled.
*/
rtems_interrupt_disable( bsp_isr_level );
bsp_boot_cmdline = cmdline;
/*
* Invoke Board Support Package initialization routine written in C.
*/
bsp_start();
/*
* Find out where the block of memory the BSP will use for
* the RTEMS Workspace and the C Program Heap is.
*/
bsp_get_work_area(&work_area_start, &work_area_size,
&heap_start, &heap_size);
if ( work_area_size <= Configuration.work_space_size ) {
printk(
"bootcard: work space too big for work area: %p > %p\n",
(void *) Configuration.work_space_size,
(void *) work_area_size
);
bsp_cleanup();
return -1;
}
if ( rtems_unified_work_area ) {
Configuration.work_space_start = work_area_start;
Configuration.work_space_size = work_area_size;
} else {
Configuration.work_space_start = work_area_start;
}
#if (BSP_DIRTY_MEMORY == 1)
memset( work_area_start, 0xCF, work_area_size );
#endif
/*
* Initialize RTEMS data structures
*/
rtems_initialize_data_structures();
/*
* Initialize the C library for those BSPs using the shared
* framework.
*/
bootcard_bsp_libc_helper(
work_area_start,
work_area_size,
heap_start,
heap_size
);
/*
* All BSP to do any required initialization now that RTEMS
* data structures are initialized. In older BSPs or those
* which do not use the shared framework, this is the typical
* time when the C Library is initialized so malloc()
* can be called by device drivers. For BSPs using the shared
* framework, this routine can be empty.
*/
bsp_pretasking_hook();
/*
* If debug is enabled, then enable all dynamic RTEMS debug
* capabilities.
*
* NOTE: Most debug features are conditionally compiled in
* or enabled via configure time plugins.
*/
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
/*
* Let RTEMS perform initialization it requires before drivers
* are allowed to be initialized.
*/
rtems_initialize_before_drivers();
/*
* Execute BSP specific pre-driver hook. Drivers haven't gotten
* to initialize yet so this is a good chance to initialize
* buses, spurious interrupt handlers, etc..
*
* NOTE: Many BSPs do not require this handler and use the
* shared stub.
*/
bsp_predriver_hook();
/*
* Initialize all device drivers.
*/
rtems_initialize_device_drivers();
/*
* Invoke the postdriver hook. This normally opens /dev/console
* for use as stdin, stdout, and stderr.
*/
bsp_postdriver_hook();
/*
* Complete initialization of RTEMS and switch to the first task.
* Global C++ constructors will be executed in the context of that task.
*/
rtems_initialize_start_multitasking();
/***************************************************************
***************************************************************
* APPLICATION RUNS HERE!!! When it shuts down, we return!!! *
***************************************************************
***************************************************************
*/
/*
* Perform any BSP specific shutdown actions which are written in C.
*/
bsp_cleanup();
/*
* Now return to the start code.
*/
return 0;
}
/*
* This is the initialization framework routine that weaves together
* calls to RTEMS and the BSP in the proper sequence to initialize
* the system while maximizing shared code and keeping BSP code in C
* as much as possible.
*/
void boot_card(
const char *cmdline
)
{
rtems_interrupt_level bsp_isr_level;
/*
* Make sure interrupts are disabled.
*/
(void) bsp_isr_level;
rtems_interrupt_local_disable( bsp_isr_level );
bsp_boot_cmdline = cmdline;
/*
* Invoke Board Support Package initialization routine written in C.
*/
bsp_start();
/*
* Initialize the RTEMS Workspace and the C Program Heap.
*/
bsp_work_area_initialize();
/*
* Initialize RTEMS data structures
*/
rtems_initialize_data_structures();
/*
* Initialize the C library for those BSPs using the shared
* framework.
*/
bsp_libc_init();
/*
* Let the BSP do any required initialization now that RTEMS
* data structures are initialized. In older BSPs or those
* which do not use the shared framework, this is the typical
* time when the C Library is initialized so malloc()
* can be called by device drivers. For BSPs using the shared
* framework, this routine can be empty.
*/
bsp_pretasking_hook();
/*
* If debug is enabled, then enable all dynamic RTEMS debug
* capabilities.
*
* NOTE: Most debug features are conditionally compiled in
* or enabled via configure time plugins.
*/
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
/*
* Let RTEMS perform initialization it requires before drivers
* are allowed to be initialized.
*/
rtems_initialize_before_drivers();
/*
* Execute BSP specific pre-driver hook. Drivers haven't gotten
* to initialize yet so this is a good chance to initialize
* buses, spurious interrupt handlers, etc..
*
* NOTE: Many BSPs do not require this handler and use the
* shared stub.
*/
bsp_predriver_hook();
/*
* Initialize all device drivers.
*/
rtems_initialize_device_drivers();
/*
* Invoke the postdriver hook. This normally opens /dev/console
* for use as stdin, stdout, and stderr.
*/
bsp_postdriver_hook();
/*
* Complete initialization of RTEMS and switch to the first task.
* Global C++ constructors will be executed in the context of that task.
*/
rtems_initialize_start_multitasking();
/***************************************************************
***************************************************************
* APPLICATION RUNS NOW!!! We will not return to here!!! *
***************************************************************
***************************************************************/
}