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/* 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) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may in
* the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id:
*/
#include <string.h>
#include <bsp.h>
#include <rtems/bspIo.h>
#include <rtems/libio.h>
#include <libcpu/cpuIdent.h>
#define DEBUG 1
/*
* Where the heap starts; is used by bsp_pretasking_hook;
*/
unsigned int BSP_heap_start;
/*
* Total RAM available and associated linker symbol
*/
unsigned int BSP_mem_size;
extern char RamSize[];
/*
* PCI Bus Frequency
*/
unsigned int BSP_bus_frequency; /* XXX - Set this based upon the Score board */
/*
* processor clock frequency
*/
unsigned int BSP_processor_frequency; /* XXX - Set this based upon the Score board */
/*
* Time base divisior (how many tick for 1 second).
*/
unsigned int BSP_time_base_divisor = 1000; /* XXX - Just a guess */
extern unsigned long __rtems_end[];
/*
* Driver configuration parameters
*/
uint32_t bsp_clicks_per_usec;
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");
}
/*
* bsp_predriver_hook
*
* Before drivers are setup initialize interupt vectors.
*/
void init_RTC();
void initialize_PMC();
void bsp_predriver_hook(void)
{
#if DEBUG
printk("bsp_predriver_hook: init_RTC\n");
#endif
init_RTC();
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 0
/*
* Initialize Bsp General purpose vector table.
*/
#if DEBUG
printk("bsp_predriver_hook: initialize_external_exception_vector\n");
#endif
initialize_external_exception_vector();
#endif
#if (0)
/*
* XXX - Modify this to write a 48000000 (loop to self) command
* to each interrupt location. This is better for debug.
*/
#if DEBUG
printk("bsp_predriver_hook: bsp_spurious_initialize\n");
#endif
bsp_spurious_initialize();
#endif
ShowBATS();
#if DEBUG
printk("bsp_predriver_hook: End of routine\n");
#endif
}
/*PAGE
*
* initialize_PMC
*/
void initialize_PMC() {
volatile uint32_t *PMC_addr;
uint8_t data;
#if (0) /* First Values sent */
/*
* set PMC base address.
*/
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x14 );
*PMC_addr = (BSP_PCI_REGISTER_BASE >> 24) & 0x3f;
/*
* Clear status, enable SERR and memory space only.
*/
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x4 );
*PMC_addr = 0x0201ff37;
/*
* Bit 0 and 1 HI cause Medium Loopback to occur.
*/
PMC_addr = (volatile uint32_t*)
BSP_PMC_SERIAL_ADDRESS( 0x100000 );
data = *PMC_addr;
/* *PMC_addr = data | 0x3; */
*PMC_addr = data & 0xfc;
#endif
#if (1)
/*
* Clear status, enable SERR and memory space only.
*/
#if DEBUG
printk("initialize_PMC: set Device Address 0x4 \n");
ShowBATS();
#endif
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x4 );
*PMC_addr = 0x020080cc;
/*
* set PMC base address.
*/
#if DEBUG
printk("initialize_PMC: set Device Address 0x14 \n");
ShowBATS();
#endif
PMC_addr = BSP_PCI_DEVICE_ADDRESS( 0x14 );
*PMC_addr = (BSP_PCI_REGISTER_BASE >> 24) & 0x3f;
#if DEBUG
printk("initialize_PMC: set PMC Serial Address 0x100000\n");
#endif
PMC_addr = (volatile uint32_t*)
BSP_PMC_SERIAL_ADDRESS( 0x100000 );
data = *PMC_addr;
*PMC_addr = data & 0xfc;
#endif
}
/*PAGE
*
* bsp_postdriver_hook
*
* Standard post driver hook plus some BSP specific stuff.
*/
void bsp_postdriver_hook(void)
{
extern void Init_EE_mask_init(void);
extern void open_dev_console(void);
#if DEBUG
printk("bsp_postdriver_hook: initialize libio\n");
#endif
if (rtems_libio_supp_helper)
(*rtems_libio_supp_helper)();
ShowBATS();
#if DEBUG
printk("bsp_postdriver_hook: Init_EE_mask_init\n");
#endif
Init_EE_mask_init();
ShowBATS();
#if DEBUG
printk("bsp_postdriver_hook: Finished procedure\n");
#endif
}
void bsp_set_trap_vectors( void );
/*PAGE
*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
unsigned int msr_value = 0x0000;
uint32_t intrStackStart;
uint32_t intrStackSize;
volatile uint32_t *ptr;
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");
ShowBATS();
#endif
memset(
&end,
0,
(unsigned char *)&RAM_END - (unsigned char *) &end
);
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();
/*
* Initialize the interrupt related settings.
*/
intrStackStart = (uint32_t) __rtems_end + BSP_INIT_STACK_SIZE;
intrStackSize = rtems_configuration_get_interrupt_stack_size();
BSP_heap_start = intrStackStart + intrStackSize;
BSP_mem_size = (uintptr_t) RamSize;
/*
* Initialize default raw exception handlers.
*/
printk("ppc_exc_initialize\n");
ppc_exc_initialize(
PPC_INTERRUPT_DISABLE_MASK_DEFAULT,
intrStackStart,
intrStackSize
);
/*
* There are multiple ROM monitors available for this board.
*/
#if (SCORE603E_USE_SDS)
#if DEBUG
printk("bsp_start: USE SDS\n");
#endif
/*
* Write instruction for Unconditional Branch to ROM vector.
*/
Code = 0x4bf00002;
for (Address = 0x100; Address <= 0xe00; Address += 0x100) {
A_Vector = (uint32_t*)Address;
Code = 0x4bf00002 + Address;
*A_Vector = Code;
}
for (Address = 0x1000; Address <= 0x1400; Address += 0x100) {
A_Vector = (uint32_t*)Address;
Code = 0x4bf00002 + Address;
*A_Vector = Code;
}
msr_value = 0x2030;
#elif (SCORE603E_USE_OPEN_FIRMWARE)
#if DEBUG
printk("bsp_start: USE OPEN FIRMWARE\n");
#endif
msr_value = 0x2030;
#elif (SCORE603E_USE_NONE)
#if DEBUG
printk("bsp_start: USE NONE\n");
#endif
msr_value = 0x2030;
_CPU_MSR_SET( msr_value );
bsp_set_trap_vectors();
#elif (SCORE603E_USE_DINK)
#if DEBUG
printk("bsp_start: USE DINK\n");
#endif
msr_value = 0x2030;
_CPU_MSR_SET( msr_value );
/*
* Override the DINK error on a Decrementor interrupt.
*/
/* org dec_vector - rfi */
ptr = (uint32_t*)0x900;
*ptr = 0x4c000064;
#else
#if DEBUG
printk("bsp_start: ERROR unknow ROM Monitor\n");
#endif
#error "SCORE603E BSPSTART.C -- what ROM monitor are you using"
#endif
_CPU_MSR_SET( msr_value );
/*
* initialize the device driver parameters
*/
#if DEBUG
printk("bsp_start: set clicks poer usec\n");
#endif
bsp_clicks_per_usec = 66 / 4; /* XXX get from linkcmds */
#if ( PPC_USE_DATA_CACHE )
#if DEBUG
printk("bsp_start: cache_enable\n");
#endif
instruction_cache_enable ();
data_cache_enable ();
#if DEBUG
printk("bsp_start: END PPC_USE_DATA_CACHE\n");
#endif
#endif
#if DEBUG
printk("bsp_start: end BSPSTART\n");
ShowBATS();
#endif
}
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