source: rtems/c/src/lib/libbsp/m68k/mvme147s/startup/bspstart.c @ 5e77d129

4.104.114.84.95
Last change on this file since 5e77d129 was 5e77d129, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 14, 2000 at 8:32:44 PM

Patch from John Cotton <john.cotton@…> to correct cache
routine naming to follow RTEMS package/object.method rule.
This patch also eliminated calls to the obsolete routine
m68k_enable_caching.

  • Property mode set to 100644
File size: 4.6 KB
Line 
1/*
2 *  This routine starts the application.  It includes application,
3 *  board, and monitor specific initialization and configuration.
4 *  The generic CPU dependent initialization has been performed
5 *  before this routine is invoked.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  MVME147 port for TNI - Telecom Bretagne
15 *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
16 *  May 1996
17 *
18 *  $Id$
19 */
20
21#include <bsp.h>
22#include <rtems/libio.h>
23
24#include <libcsupport.h>
25
26#include <string.h>
27
28/*
29 *  The original table from the application and our copy of it with
30 *  some changes.
31 */
32
33extern rtems_configuration_table  Configuration;
34rtems_configuration_table         BSP_Configuration;
35
36rtems_cpu_table Cpu_table;
37
38char *rtems_progname;
39
40/*
41 *  Use the shared implementations of the following routines
42 */
43 
44void bsp_postdriver_hook(void);
45void bsp_libc_init( void *, unsigned32, int );
46void bsp_pretasking_hook(void);               /* m68k version */
47
48/*
49 *  bsp_start
50 *
51 *  This routine does the bulk of the system initialization.
52 */
53
54void bsp_start( void )
55{
56  m68k_isr_entry       *monitors_vector_table;
57  int                   index;
58  rtems_unsigned8       node_number;
59  extern void          *_WorkspaceBase;
60  extern void          *_RamSize;
61  extern unsigned long  _M68k_Ramsize;
62
63  _M68k_Ramsize = (unsigned long)&_RamSize;             /* RAM size set in linker script */
64
65  monitors_vector_table = (m68k_isr_entry *)0;   /* 147Bug Vectors are at 0 */
66  m68k_set_vbr( monitors_vector_table );
67
68  for ( index=2 ; index<=255 ; index++ )
69    M68Kvec[ index ] = monitors_vector_table[ 32 ];
70
71  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
72  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
73  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
74  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
75
76  m68k_set_vbr( &M68Kvec );
77
78  pcc->int_base_vector = PCC_BASE_VECTOR & 0xF0; 
79  /* Set the PCC int vectors base */
80 
81  /* VME shared memory configuration */
82  /* Only the first node shares its top 128k DRAM */
83
84  vme_lcsr->utility_interrupt_vector = VME_BASE_VECTOR & 0xF8;
85  /* Set VMEchip base interrupt vector */
86  vme_lcsr->utility_interrupt_mask |= 0x02;
87  /* Enable SIGLP interruption (see shm support) */
88  pcc->general_purpose_control &= 0x10;
89  /* Enable VME master interruptions */
90 
91  if (vme_lcsr->system_controller & 0x01) {
92    /* the board is system controller */
93    vme_lcsr->system_controller = 0x08; 
94    /* Make VME access round-robin */
95  }
96
97 
98  node_number = 
99    (rtems_unsigned8) 
100    (Configuration.User_multiprocessing_table->node - 1) & 0xF;
101  /* Get and store node ID, first node_number = 0 */
102  vme_gcsr->board_identification = node_number;
103
104  vme_lcsr->gcsr_base_address = node_number;
105  /* Setup the base address of this board's gcsr */
106  vme_lcsr->timer_configuration = 0x6a;
107  /* Enable VME time outs, maximum periods */
108
109  if (node_number == 0) {
110    pcc->slave_base_address = 0x01;
111    /* Set local DRAM base address on the VME bus to the DRAM size */
112
113    vme_lcsr->vme_bus_requester = 0x80;
114    while (! (vme_lcsr->vme_bus_requester & 0x40));
115    /* Get VMEbus mastership */
116    vme_lcsr->slave_address_modifier = 0xfb;
117    /* Share everything */
118    vme_lcsr->slave_configuration = 0x80;
119    /* Share local DRAM */
120    vme_lcsr->vme_bus_requester = 0x0;
121    /* release bus */
122  } else {
123    pcc->slave_base_address = 0;
124    /* Set local DRAM base address on the VME bus to 0 */
125
126    vme_lcsr->vme_bus_requester = 0x80;
127    while (! (vme_lcsr->vme_bus_requester & 0x40));
128    /* Get VMEbus mastership */
129    vme_lcsr->slave_address_modifier = 0x08;
130    /* Share only the short adress range */
131    vme_lcsr->slave_configuration = 0;
132    /* Don't share local DRAM */
133    vme_lcsr->vme_bus_requester = 0x0;
134    /* release bus */
135  }
136
137  vme_lcsr->master_address_modifier = 0;
138  /* Automatically set the address modifier */
139  vme_lcsr->master_configuration = 1;
140  /* Disable D32 transfers : they don't work on my VMEbus rack */
141
142  rtems_cache_enable_instruction();
143
144  /*
145   *  we only use a hook to get the C library initialized.
146   */
147
148  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
149  Cpu_table.postdriver_hook = bsp_postdriver_hook;
150  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
151  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
152
153  BSP_Configuration.work_space_start = (void *) &_WorkspaceBase;
154}
Note: See TracBrowser for help on using the repository browser.