/*
* 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.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include <string.h>
#include <bsp.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
extern rtems_configuration_table Configuration;
rtems_configuration_table BSP_Configuration;
rtems_cpu_table Cpu_table;
int cpu_number;
#define WORKSPACE_SIZE (1024 * 1024)
rtems_unsigned8 MY_WORK_SPACE[ WORKSPACE_SIZE ];
/*
* Amount to increment itimer by each pass
* It is a variable instead of a #define to allow the 'looptest'
* script to bump it without recompiling rtems
*/
rtems_unsigned32 CPU_HPPA_CLICKS_PER_TICK;
#if SIMHPPA_FAST_IDLE
/*
* Many of the tests are very slow on the simulator because they have
* have 5 second delays hardwired in.
* Try to speed those tests up by speeding up the clock when in idle
*/
rtems_extension fast_idle_switch_hook(
rtems_tcb *current_task,
rtems_tcb *heir_task
)
{
static rtems_unsigned32 normal_clock = ~0;
static rtems_unsigned32 fast_clock;
/* init our params on first call */
if (normal_clock == (rtems_unsigned32) ~0)
{
normal_clock = CPU_HPPA_CLICKS_PER_TICK;
fast_clock = CPU_HPPA_CLICKS_PER_TICK / 0x100;
if (fast_clock == 0) /* who? me? pathological? never! */
fast_clock++;
}
/*
* Checking for 'name' field of 'IDLE' is not the best/safest,
* but its the best we could think of at the moment.
*/
if (heir_task == _Thread_Idle)
CPU_HPPA_CLICKS_PER_TICK = fast_clock;
else if (current_task == _Thread_Idle)
CPU_HPPA_CLICKS_PER_TICK = normal_clock;
}
#endif
/*
* Use the shared implementations of the following routines
*/
void bsp_postdriver_hook(void);
void bsp_libc_init( void *, unsigned32, 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)
{
extern int end;
rtems_unsigned32 heap_start;
heap_start = (rtems_unsigned32) &end;
if (heap_start & (CPU_ALIGNMENT-1))
heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
bsp_libc_init((void *) heap_start, 64 * 1024, 0);
/*
* on MP systems, always use the print buffer
* instead of the (broken) system calls
*/
if (BSP_Configuration.User_multiprocessing_table)
use_print_buffer = 1;
#ifdef SIMHPPA_ROM
use_print_buffer = 1;
#endif
#if SIMHPPA_FAST_IDLE
/*
* Install the fast idle task switch extension
*
* on MP systems, might now want to do this; it confuses at least
* one test (mp06)
*/
#if 0
if (BSP_Configuration.User_multiprocessing_table == 0)
#endif
{
rtems_extensions_table fast_idle_extension;
rtems_id extension_id;
rtems_status_code rc;
memset(&fast_idle_extension, 0, sizeof(fast_idle_extension));
fast_idle_extension.thread_switch = fast_idle_switch_hook;
rc = rtems_extension_create(rtems_build_name('F', 'D', 'L', 'E'),
&fast_idle_extension, &extension_id);
if (rc != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred(rc);
}
#endif
}
void bsp_start(void)
{
/*
* Set cpu_number to accurately reflect our cpu number
*/
#ifdef hppa7200
/*
* Use HPPA_DR0 if supported
*/
{
int dr0;
HPPA_ASM_MFCPU(HPPA_DR0, dr0);
cpu_number = (dr0 >> 4) & 0x7;
}
#else
if (Configuration.User_multiprocessing_table)
cpu_number = Configuration.User_multiprocessing_table->node - 1;
else
cpu_number = 0;
#endif
BSP_Configuration.work_space_start = (void *)MY_WORK_SPACE;
if (BSP_Configuration.work_space_size)
BSP_Configuration.work_space_size = WORKSPACE_SIZE;
/*
* Set up our hooks
* Make sure libc_init is done before drivers init'd so that
* they can use atexit()
*/
Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */
Cpu_table.postdriver_hook = bsp_postdriver_hook; /* register drivers */
/*
* Don't zero out the workspace. The simulator did it for us.
*/
Cpu_table.do_zero_of_workspace = FALSE;
Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
/*
* Set this artificially low for the simulator
*/
Cpu_table.itimer_clicks_per_microsecond = 1;
#if 0
/*
* Commented by DIVISION INC. External interrupt
* processing is now divorced from RTEMS for HPPA.
*/
/*
* Determine the external interrupt processing order
* the external interrupt handler walks thru this table, in
* order checking for posted interrupts.
*/
Cpu_table.external_interrupts = 0;
Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] =
HPPA_INTERRUPT_EXTERNAL_INTERVAL_TIMER;
Cpu_table.external_interrupts++;
if ( Configuration.User_multiprocessing_table ) {
Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] =
HPPA_INTERRUPT_EXTERNAL_10;
Cpu_table.external_interrupts++;
}
#endif
#if SIMHPPA_FAST_IDLE
/*
* Add 1 extension for fast idle
*/
BSP_Configuration.maximum_extensions++;
#endif
/*
* Set the "clicks per tick" for the simulator
* used by libcpu/hppa/clock/clock.c to schedule interrupts
*
* Set it only if 0 to allow for simulator setting it via script
* on test startup.
*/
if (CPU_HPPA_CLICKS_PER_TICK == 0)
CPU_HPPA_CLICKS_PER_TICK = 0x4000;
}
