/* bspstart.c
*
* This set of routines starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before any of these are invoked.
*
* COPYRIGHT (c) 1989-2010.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <string.h>
#include <bsp.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <rtems/bspIo.h>
#include <libcpu/cpuIdent.h>
#include <bsp/irq.h>
#define DEBUG 0
/*
* Where the heap starts; is used by bsp_pretasking_hook;
*/
unsigned int BSP_heap_start;
/*
* PCI Bus Frequency
*/
unsigned int BSP_bus_frequency;
/*
* processor clock frequency
*/
unsigned int BSP_processor_frequency;
/*
* Time base divisior (how many tick for 1 second).
* Note: Calibrated with an application using a 20ms timer and
* a scope.
*/
unsigned int BSP_time_base_divisor = 3960;
/*
* Driver configuration parameters
*/
uint32_t bsp_clicks_per_usec;
/*
* Memory on this board.
*/
extern char RamSize[];
uint32_t BSP_mem_size;
extern unsigned long __rtems_end[];
void BSP_panic(char *s)
{
printk("%s PANIC %s\n",_RTEMS_version, s);
__asm__ __volatile ("sc");
}
void _BSP_Fatal_error(unsigned int v)
{
printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
__asm__ __volatile ("sc");
}
/*PAGE
*
* bsp_predriver_hook
*
* Before drivers are setup initialize interupt vectors.
*/
void init_RTC(void);
void initialize_PMC(void);
void bsp_predriver_hook(void)
{
init_PCI();
initialize_universe();
#if DEBUG
printk("bsp_predriver_hook: initialize_PCI_bridge\n");
#endif
initialize_PCI_bridge ();
#if (HAS_PMC_PSC8)
#if DEBUG
printk("bsp_predriver_hook: initialize_PMC\n");
#endif
initialize_PMC();
#endif
#if DEBUG
printk("bsp_predriver_hook: End of routine\n");
#endif
}
/*PAGE
*
* initialize_PMC
*/
void initialize_PMC(void) {
volatile uint32_t *PMC_addr;
uint32_t data;
/*
* Clear status, enable SERR and memory space only.
*/
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x4 );
*PMC_addr = 0x020080cc;
#if DEBUG
printk("initialize_PMC: 0x%x = 0x%x\n", PMC_addr, 0x020080cc);
#endif
/*
* set PMC base address.
*/
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x14 );
*PMC_addr = (BSP_PCI_REGISTER_BASE >> 24) & 0x3f;
#if DEBUG
printk("initialize_PMC: 0x%x = 0x%x\n", PMC_addr, ((BSP_PCI_REGISTER_BASE >> 24) & 0x3f));
#endif
PMC_addr = (volatile uint32_t*)
BSP_PMC_SERIAL_ADDRESS( 0x100000 );
data = *PMC_addr;
#if DEBUG
printk("initialize_PMC: Read 0x%x (0x%x)\n", PMC_addr, data );
printk("initialize_PMC: Read 0x%x (0x%x)\n", PMC_addr, data & 0xfc );
#endif
*PMC_addr = data & 0xfc;
}
/*PAGE
*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
unsigned int msr_value = 0x0000;
uintptr_t intrStackStart;
uintptr_t intrStackSize;
ppc_cpu_id_t myCpu;
ppc_cpu_revision_t myCpuRevision;
rtems_bsp_delay( 1000 );
/*
* Zero out lots of memory
*/
#if DEBUG
printk("bsp_start: Zero out lots of memory\n");
#endif
BSP_processor_frequency = 266000000;
BSP_bus_frequency = 66000000;
/*
* Get CPU identification dynamically. Note that the get_ppc_cpu_type()
* function store the result in global variables so that it can be used
* later...
*/
myCpu = get_ppc_cpu_type();
myCpuRevision = get_ppc_cpu_revision();
printk("Cpu: 0x%x Revision: %d\n", myCpu, myCpuRevision);
printk("Cpu %s\n", get_ppc_cpu_type_name(myCpu) );
/*
* Initialize the interrupt related settings.
*/
intrStackStart = (uintptr_t) __rtems_end;
intrStackSize = rtems_configuration_get_interrupt_stack_size();
printk("Interrupt Stack Start: 0x%x Size: 0x%x Heap Start: 0x%x\n",
intrStackStart, intrStackSize, BSP_heap_start
);
BSP_mem_size = (uint32_t) RamSize;
printk("BSP_mem_size: %p\n", RamSize );
/*
* Initialize default raw exception handlers.
*/
ppc_exc_initialize(
PPC_INTERRUPT_DISABLE_MASK_DEFAULT,
intrStackStart,
intrStackSize
);
msr_value = 0x2030;
_CPU_MSR_SET( msr_value );
__asm__ volatile("sync; isync");
/*
* initialize the device driver parameters
*/
#if DEBUG
printk("bsp_start: set clicks poer usec\n");
#endif
bsp_clicks_per_usec = 66 / 4;
#if BSP_DATA_CACHE_ENABLED
#if DEBUG
printk("bsp_start: cache_enable\n");
#endif
instruction_cache_enable ();
data_cache_enable ();
#if DEBUG
printk("bsp_start: END BSP_DATA_CACHE_ENABLED\n");
#endif
#endif
/*
* Initalize RTEMS IRQ system
*/
#if DEBUG
printk("bspstart: Call BSP_rtems_irq_mng_init\n");
#endif
BSP_rtems_irq_mng_init(0);
#if DEBUG
printk("bsp_start: end BSPSTART\n");
ShowBATS();
#endif
}