bsp.h

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/*  bsp.h
 *
 *  This include file contains all MVME162fx board IO definitions.
 *
 *  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.
 *
 *  Modifications of respective RTEMS file: COPYRIGHT (c) 1994.
 *  EISCAT Scientific Association. M.Savitski
 *
 *  This material is a part of the MVME162 Board Support Package
 *  for the RTEMS executive. Its licensing policies are those of the
 *  RTEMS above.
 *
 *  $Id: bsp.h,v 1.14.6.1 2003/09/04 18:44:40 joel Exp $
 */

#ifndef __MVME162_h
#define __MVME162_h

#ifdef __cplusplus
extern "C" {
#endif

#include <bspopts.h>

#include <rtems.h>
#include <clockdrv.h>
#include <console.h>
#include <iosupp.h>

/*
 *  confdefs.h overrides for this BSP:
 *   - number of termios serial ports (defaults to 1)
 *   - Interrupt stack space is not minimum if defined.
 */

/* #define CONFIGURE_NUMBER_OF_TERMIOS_PORTS 2 */
#define CONFIGURE_INTERRUPT_STACK_MEMORY  (4 * 1024)

#include <mvme16x_hw.h>


/*----------------------------------------------------------------*/

typedef volatile struct {

  unsigned char     chipID;
  unsigned char     chipREV;
  unsigned char     gen_control;
  unsigned char     vector_base;
  
  unsigned long     timer_cmp_1;
  unsigned long     timer_cnt_1;
  unsigned long     timer_cmp_2;
  unsigned long     timer_cnt_2;
  
  unsigned char     LSB_prescaler_count;
  unsigned char     prescaler_clock_adjust;
  unsigned char     time_ctl_2;
  unsigned char     time_ctl_1;
  
  unsigned char     time_int_ctl_4;
  unsigned char     time_int_ctl_3;
  unsigned char     time_int_ctl_2;
  unsigned char     time_int_ctl_1;
  
  unsigned char     dram_err_int_ctl;
  unsigned char     SCC_int_ctl;
  unsigned char     time_ctl_4;
  unsigned char     time_ctl_3;
  
  unsigned short    DRAM_space_base;
  unsigned short    SRAM_space_base;
  
  unsigned char     DRAM_size;
  unsigned char     DRAM_SRAM_opt;
  unsigned char     SRAM_size;
  unsigned char     reserved;

  unsigned char     LANC_error;
  unsigned char     reserved1;
  unsigned char     LANC_int_ctl;
  unsigned char     LANC_berr_ctl;

  unsigned char     SCSI_error;
  unsigned char     general_inputs;
  unsigned char     MVME_162_version;
  unsigned char     SCSI_int_ctl;

  unsigned long     timer_cmp_3;
  unsigned long     timer_cnt_3;
  unsigned long     timer_cmp_4;
  unsigned long     timer_cnt_4;
  
  unsigned char     bus_clk;
  unsigned char     PROM_acc_time_ctl;
  unsigned char     FLASH_acc_time_ctl;
  unsigned char     ABORT_int_ctl;
  
  unsigned char     RESET_ctl;
  unsigned char     watchdog_timer_ctl;
  unsigned char     acc_watchdog_time_base_sel;
  unsigned char     reserved2;
  
  unsigned char     DRAM_ctl;
  unsigned char     reserved4;
  unsigned char     MPU_status;
  unsigned char     reserved3;
  
  unsigned long     prescaler_count;
  
} mcchip_regs;
 
#define mcchip      ((mcchip_regs * const) 0xFFF42000)

/*----------------------------------------------------------------*/

/* 
 * SCC Z8523(0) defines and macros 
 * ------------------------------- 
 * Prototypes for the low-level serial io are also included here,
 * because such stuff is bsp-specific (yet). The function bodies
 * are in console.c
 *
 * NOTE from Eric Vaitl <[e-mail]>:
 *
 * I dropped RTEMS into a 162FX today (the MVME162-513). The 162FX has a 
 * bug in the MC2 chip (revision 1) such that the SCC data register is 
 * not accessible, it has to be accessed indirectly through the SCC 
 * control register. 
 */

enum {portB, portA};

rtems_boolean char_ready(int port, char *ch);
char char_wait(int port);
void char_put(int port, char ch);

#define TX_BUFFER_EMPTY   0x04
#define RX_DATA_AVAILABLE 0x01
#define SCC_VECTOR        0x40

typedef volatile struct {
  unsigned char pad1;
  volatile unsigned char          csr;
  unsigned char pad2;
  volatile unsigned char          buf;
} scc_regs;

#define scc       ((scc_regs * const) 0xFFF45000)

#define ZWRITE0(port, v)  (scc[port].csr = (unsigned char)(v))
#define ZREAD0(port)  (scc[port].csr)

#define ZREAD(port, n)  (ZWRITE0(port, n), (scc[port].csr))
#define ZREADD(port)  (scc[port].csr=0x08, scc[port].csr )

#define ZWRITE(port, n, v) (ZWRITE0(port, n), ZWRITE0(port, v))
#define ZWRITED(port, v)  (scc[port].csr = 0x08, \
                           scc[port].csr = (unsigned char)(v))
/*----------------------------------------------------------------*/

/*
 *  Define the time limits for RTEMS Test Suite test durations.
 *  Long test and short test duration limits are provided.  These
 *  values are in seconds and need to be converted to ticks for the
 *  application.
 *
 */

#define MAX_LONG_TEST_DURATION       300 /* 5 minutes = 300 seconds */
#define MAX_SHORT_TEST_DURATION      3   /* 3 seconds */

/*
 *  Define the interrupt mechanism for Time Test 27 
 *
 *  NOTE: We use software interrupt 0
 */

#define MUST_WAIT_FOR_INTERRUPT 0

#define Install_tm27_vector( handler ) \
            set_vector( (handler), VBR1 * 0x10 + 0x8, 1 ); \
            lcsr->intr_level[2] |= 3; \
            lcsr->intr_ena |= 0x100;

#define Cause_tm27_intr()  lcsr->intr_soft_set |= 0x100

#define Clear_tm27_intr()  lcsr->intr_clear |= 0x100

#define Lower_tm27_intr()

#ifdef M162_INIT
#undef EXTERN
#define EXTERN
#else
#undef EXTERN
#define EXTERN extern
#endif

/*
 *  Device Driver Table Entries
 */

/*
 * NOTE: Use the standard Console driver entry
 */
 
/*
 * NOTE: Use the standard Clock driver entry
 */

/* miscellaneous stuff assumed to exist */

extern rtems_configuration_table BSP_Configuration;

extern m68k_isr_entry M68Kvec[];   /* vector table address */

/* functions */

void bsp_cleanup( void );

m68k_isr_entry set_vector(
  rtems_isr_entry     handler,
  rtems_vector_number vector,
  int                 type
);

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */