/*
* This routine starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before this routine is invoked.
*
* COPYRIGHT (c) 1989-1999.
* 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.
*
* $Id$
*/
#include <string.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
#include <bsp/consoleIo.h>
#include <libcpu/spr.h>
#include <bsp/residual.h>
#include <bsp/pci.h>
#include <bsp/openpic.h>
#include <bsp/irq.h>
#include <bsp/VME.h>
#include <bsp.h>
#include <libcpu/bat.h>
#include <libcpu/pte121.h>
#include <libcpu/cpuIdent.h>
#include <bsp/vectors.h>
#include <rtems/powerpc/powerpc.h>
extern unsigned long __rtems_end[];
extern void L1_caches_enables();
extern unsigned get_L2CR();
extern void set_L2CR(unsigned);
extern void bsp_cleanup(void);
extern Triv121PgTbl BSP_pgtbl_setup();
extern void BSP_pgtbl_activate();
extern void BSP_vme_config();
unsigned int rsPMCQ1Init();
SPR_RW(SPRG0)
SPR_RW(SPRG1)
void ShowBATS(){
uint32_t lower;
uint32_t upper;
__MFSPR(536, upper);
__MFSPR(537, lower);
printk("BAT0 %08x %08x\n", upper, lower );
__MFSPR(538, upper);
__MFSPR(539, lower);
printk("BAT1 %08x %08x\n", upper, lower );
__MFSPR(540, upper);
__MFSPR(541, lower);
printk("BAT2 %08x %08x\n", upper, lower );
__MFSPR(542, upper);
__MFSPR(543, lower);
printk("BAT3 %08x %08x\n", upper, lower );
}
uint8_t LightIdx = 0;
void BSP_Increment_Light(){
uint8_t data;
data = *GENERAL_REGISTER1;
data &= 0xf0;
data |= LightIdx++;
*GENERAL_REGISTER1 = data;
}
void BSP_Fatal_Fault_Light() {
uint8_t data;
data = *GENERAL_REGISTER1;
data &= 0xf0;
data |= 0x7;
while(1)
*GENERAL_REGISTER1 = data;
}
void write_to_Q2ram(int offset, unsigned int data )
{
printk("0x%x ==> %d\n", offset, data );
#if 0
unsigned int *ptr = 0x82000000;
ptr += offset;
*ptr = data;
#endif
}
/*
* Vital Board data Start using DATA RESIDUAL
*/
uint32_t VME_Slot1 = FALSE;
/*
* Total memory.
* Note: RAM_END is defined in linkcmds. We want to verify that the application
* is only using 10M of memory, and we do this by only accounting for this
* much memory.
*/
extern int RAM_END;
unsigned int BSP_mem_size = (unsigned int)&RAM_END;
/*
* 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).
*/
unsigned int BSP_time_base_divisor = 1000; /* XXX - Just a guess */
/*
* system init stack and soft ir stack size
*/
#define INIT_STACK_SIZE 0x1000
#define INTR_STACK_SIZE CONFIGURE_INTERRUPT_STACK_MEMORY
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");
}
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
char *rtems_progname;
int BSP_FLASH_Disable_writes(
uint32_t area
)
{
unsigned char data;
data = *GENERAL_REGISTER1;
data |= DISABLE_USER_FLASH;
*GENERAL_REGISTER1 = data;
return RTEMS_SUCCESSFUL;
}
int BSP_FLASH_Enable_writes(
uint32_t area /* IN */
)
{
unsigned char data;
data = *GENERAL_REGISTER1;
data &= (~DISABLE_USER_FLASH);
*GENERAL_REGISTER1 = data;
return RTEMS_SUCCESSFUL;
}
void BSP_FLASH_set_page(
uint8_t page
)
{
unsigned char data;
/* Set the flash page register. */
data = *GENERAL_REGISTER2;
data &= ~(BSP_FLASH_PAGE_MASK);
data |= 0x80 | (page << BSP_FLASH_PAGE_SHIFT);
*GENERAL_REGISTER2 = data;
}
/*
* Use the shared implementations of the following routines
*/
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, uint32_t, int );
/*
* Function: bsp_pretasking_hook
* Created: 95/03/10
*
* Description:
* BSP pretasking hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*
* NOTES:
* Must not use libc (to do io) from here, since drivers are
* not yet initialized.
*
*/
void bsp_pretasking_hook(void)
{
uint32_t heap_start;
uint32_t heap_size;
uint32_t heap_sbrk_spared;
extern uint32_t _bsp_sbrk_init(uint32_t, uint32_t*);
heap_start = ((uint32_t) __rtems_end) +INIT_STACK_SIZE + INTR_STACK_SIZE;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
heap_size = (BSP_mem_size - heap_start) - BSP_Configuration.work_space_size;
heap_sbrk_spared=_bsp_sbrk_init(heap_start, &heap_size);
#ifdef SHOW_MORE_INIT_SETTINGS
printk(" HEAP start %x size %x (%x bytes spared for sbrk)\n",
heap_start, heap_size, heap_sbrk_spared);
#endif
bsp_libc_init((void *) 0, heap_size, heap_sbrk_spared);
rsPMCQ1Init();
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
void zero_bss()
{
/* prevent these from being accessed in the short data areas */
extern unsigned long __bss_start[], __SBSS_START__[], __SBSS_END__[];
extern unsigned long __SBSS2_START__[], __SBSS2_END__[];
memset(__SBSS_START__, 0, ((unsigned) __SBSS_END__) - ((unsigned)__SBSS_START__));
memset(__SBSS2_START__, 0, ((unsigned) __SBSS2_END__) - ((unsigned)__SBSS2_START__));
memset(__bss_start, 0, ((unsigned) __rtems_end) - ((unsigned)__bss_start));
}
void save_boot_params(RESIDUAL* r3, void *r4, void* r5, char *additional_boot_options)
{
#if 0
residualCopy = *r3;
strncpy(loaderParam, additional_boot_options, MAX_LOADER_ADD_PARM);
loaderParam[MAX_LOADER_ADD_PARM - 1] ='\0';
#endif
}
unsigned int EUMBBAR;
unsigned int get_eumbbar() {
register int a, e;
asm volatile( "lis %0,0xfec0; ori %0,%0,0x0000": "=r" (a) );
asm volatile("sync");
asm volatile("lis %0,0x8000; ori %0,%0,0x0078": "=r"(e) );
asm volatile("stwbrx %0,0x0,%1": "=r"(e): "r"(a));
asm volatile("sync");
asm volatile("lis %0,0xfee0; ori %0,%0,0x0000": "=r" (a) );
asm volatile("sync");
asm volatile("lwbrx %0,0x0,%1": "=r" (e): "r" (a));
asm volatile("isync");
return e;
}
void Read_ep1a_config_registers( ppc_cpu_id_t myCpu ) {
unsigned char value;
/*
* Print out the board and revision.
*/
printk("Board: ");
printk( get_ppc_cpu_type_name(myCpu) );
value = *BOARD_REVISION_REGISTER2 & HARDWARE_ID_MASK;
if ( value == HARDWARE_ID_PPC5_EP1A )
printk(" EP1A ");
else if ( value == HARDWARE_ID_EP1B )
printk(" EP1B ");
else
printk(" Unknown ");
value = *BOARD_REVISION_REGISTER2&0x1;
printk("Board ID %08x", value);
if(value == 0x0){
VME_Slot1 = TRUE;
printk("VME Slot 1\n");
}
else{
VME_Slot1 = FALSE;
printk("\n");
}
printk("Revision: ");
value = *BOARD_REVISION_REGISTER1;
printk("%d%c\n\n", value>>4, 'A'+(value&BUILD_REVISION_MASK) );
/*
* Get the CPU, XXX frequency
*/
value = *EQUIPMENT_PRESENT_REGISTER2 & PLL_CFG_MASK;
switch( value ) {
case MHZ_33_66_200: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 200000000;
BSP_bus_frequency = 33000000;
break;
case MHZ_33_100_200: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 200000000;
BSP_bus_frequency = 33000000;
break;
case MHZ_33_66_266: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 266000000;
BSP_bus_frequency = 33000000;
break;
case MHZ_33_66_333: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 333000000;
BSP_bus_frequency = 33000000;
break;
case MHZ_33_100_333: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 333000000;
BSP_bus_frequency = 33000000;
break;
case MHZ_33_100_350: /* PCI, MEM, & CPU Frequency */
BSP_processor_frequency = 350000000;
BSP_bus_frequency = 33000000;
break;
default:
printk("ERROR: Unknown Processor frequency 0x%02x please fill in bspstart.c\n",value);
BSP_processor_frequency = 350000000;
BSP_bus_frequency = 33000000;
break;
}
}
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
unsigned char *stack;
register uint32_t intrStack;
register uint32_t *intrStackPtr;
unsigned char *work_space_start;
ppc_cpu_id_t myCpu;
ppc_cpu_revision_t myCpuRevision;
Triv121PgTbl pt=0; /* R = e; */
/*
* Get CPU identification dynamically. Note that the get_ppc_cpu_type() function
* store the result in global variables so that it can be used latter...
*/
BSP_Increment_Light();
myCpu = get_ppc_cpu_type();
myCpuRevision = get_ppc_cpu_revision();
EUMBBAR = get_eumbbar();
printk("EUMBBAR 0x%08x\n", EUMBBAR );
/*
* Note this sets BSP_processor_frequency based upon register settings.
* It must be done prior to setting up hooks.
*/
Read_ep1a_config_registers( myCpu );
/*
* Set up our hooks
* Make sure libc_init is done before drivers initialized so that
* they can use atexit()
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.postdriver_hook = bsp_postdriver_hook;
Cpu_table.do_zero_of_workspace = TRUE;
Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
Cpu_table.clicks_per_usec = BSP_processor_frequency/(BSP_time_base_divisor * 1000);
Cpu_table.exceptions_in_RAM = TRUE;
ShowBATS();
#if 0 /* XXX - Add back in cache enable when we get this up and running!! */
/*
* enables L1 Cache. Note that the L1_caches_enables() codes checks for
* relevant CPU type so that the reason why there is no use of myCpu...
*/
L1_caches_enables();
#endif
/*
* the initial stack has aready been set to this value in start.S
* so there is no need to set it in r1 again... It is just for info
* so that It can be printed without accessing R1.
*/
stack = ((unsigned char*) __rtems_end) + INIT_STACK_SIZE - PPC_MINIMUM_STACK_FRAME_SIZE;
/* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */
*((uint32_t *)stack) = 0;
/*
* Initialize the interrupt related settings
* SPRG1 = software managed IRQ stack
*
* This could be done latter (e.g in IRQ_INIT) but it helps to understand
* some settings below...
*/
intrStack = ((uint32_t) __rtems_end) +
INIT_STACK_SIZE + INTR_STACK_SIZE - PPC_MINIMUM_STACK_FRAME_SIZE;
/* make sure it's properly aligned */
intrStack &= ~(CPU_STACK_ALIGNMENT-1);
/* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */
intrStackPtr = (uint32_t*) intrStack;
*intrStackPtr = 0;
_write_SPRG1((unsigned int)intrStack);
/* signal them that we have fixed PR288 - eventually, this should go away */
_write_SPRG0(PPC_BSP_HAS_FIXED_PR288);
/*
* Initialize default raw exception hanlders. See vectors/vectors_init.c
*/
initialize_exceptions();
/*
* Init MMU block address translation to enable hardware
* access
*/
setdbat(1, 0xf0000000, 0xf0000000, 0x10000000, IO_PAGE);
setdbat(3, 0x90000000, 0x90000000, 0x10000000, IO_PAGE);
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Going to start PCI buses scanning and initialization\n");
#endif
pci_initialize();
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Number of PCI buses found is : %d\n", pci_bus_count());
#endif
#ifdef TEST_RAW_EXCEPTION_CODE
printk("Testing exception handling Part 1\n");
/*
* Cause a software exception
*/
__asm__ __volatile ("sc");
/*
* Check we can still catch exceptions and returned coorectly.
*/
printk("Testing exception handling Part 2\n");
__asm__ __volatile ("sc");
#endif
#ifdef SHOW_MORE_INIT_SETTINGS
printk("BSP_Configuration.work_space_size = %x\n", BSP_Configuration.work_space_size);
#endif
work_space_start =
(unsigned char *)BSP_mem_size - BSP_Configuration.work_space_size;
if ( work_space_start <= ((unsigned char *)__rtems_end) + INIT_STACK_SIZE + INTR_STACK_SIZE) {
printk( "bspstart: Not enough RAM!!!\n" );
bsp_cleanup();
}
BSP_Configuration.work_space_start = work_space_start;
/*
* Initalize RTEMS IRQ system
*/
BSP_rtems_irq_mng_init(0);
/* Activate the page table mappings only after
* initializing interrupts because the irq_mng_init()
* routine needs to modify the text
*/
if (pt) {
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Page table setup finished; will activate it NOW...\n");
#endif
BSP_pgtbl_activate(pt);
}
/*
* Initialize VME bridge - needs working PCI
* and IRQ subsystems...
*/
#ifdef SHOW_MORE_INIT_SETTINGS
printk("Going to initialize VME bridge\n");
#endif
/* VME initialization is in a separate file so apps which don't use
* VME or want a different configuration may link against a customized
* routine.
*/
BSP_vme_config();
#ifdef SHOW_MORE_INIT_SETTINGS
ShowBATS();
printk("Exit from bspstart\n");
#endif
}
