source: rtems/c/src/lib/libbsp/m68k/mvme147s/startup/bspstart.c @ 9b64c2d5

4.104.114.84.9
Last change on this file since 9b64c2d5 was 9b64c2d5, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 15, 1998 at 12:10:03 AM

Per suggestion from Eric Norum, went from one initial extension set
to multiple. This lets the stack check extension be installed
at system initialization time and avoids the BSP having to
even know about its existence.

  • Property mode set to 100644
File size: 6.0 KB
Line 
1/*  bsp_start()
2 *
3 *  This routine starts the application.  It includes application,
4 *  board, and monitor specific initialization and configuration.
5 *  The generic CPU dependent initialization has been performed
6 *  before this routine is invoked.
7 *
8 *  INPUT:  NONE
9 *
10 *  OUTPUT: NONE
11 *
12 *  COPYRIGHT (c) 1989-1998.
13 *  On-Line Applications Research Corporation (OAR).
14 *  Copyright assigned to U.S. Government, 1994.
15 *
16 *  The license and distribution terms for this file may be
17 *  found in the file LICENSE in this distribution or at
18 *  http://www.OARcorp.com/rtems/license.html.
19 *
20 *  MVME147 port for TNI - Telecom Bretagne
21 *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
22 *  May 1996
23 *
24 *  $Id$
25 */
26
27#include <bsp.h>
28#include <rtems/libio.h>
29
30#include <libcsupport.h>
31
32#include <string.h>
33
34/*
35 *  The original table from the application and our copy of it with
36 *  some changes.
37 */
38
39extern rtems_configuration_table  Configuration;
40rtems_configuration_table         BSP_Configuration;
41
42rtems_cpu_table Cpu_table;
43
44char *rtems_progname;
45
46/*      Initialize whatever libc we are using
47 *      called from postdriver hook
48 */
49
50void bsp_libc_init()
51{
52    extern int end;
53    rtems_unsigned32        heap_start;
54
55    heap_start = (rtems_unsigned32) &end;
56    if (heap_start & (CPU_ALIGNMENT-1))
57        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
58
59    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
60
61    /*
62     *  Init the RTEMS libio facility to provide UNIX-like system
63     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
64     *  Uses malloc() to get area for the iops, so must be after malloc init
65     */
66
67    rtems_libio_init();
68
69    /*
70     * Set up for the libc handling.
71     */
72
73    if (BSP_Configuration.ticks_per_timeslice > 0)
74        libc_init(1);                /* reentrant if possible */
75    else
76        libc_init(0);                /* non-reentrant */
77}
78
79/*
80 *  Function:   bsp_pretasking_hook
81 *  Created:    95/03/10
82 *
83 *  Description:
84 *      BSP pretasking hook.  Called just before drivers are initialized.
85 *      Used to setup libc and install any BSP extensions.
86 *
87 *  NOTES:
88 *      Must not use libc (to do io) from here, since drivers are
89 *      not yet initialized.
90 *
91 */
92 
93void
94bsp_pretasking_hook(void)
95{
96    bsp_libc_init();
97 
98#ifdef RTEMS_DEBUG
99    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
100#endif
101}
102 
103
104/*
105 *  Use the shared bsp_postdriver_hook() implementation
106 */
107 
108void bsp_postdriver_hook(void);
109
110
111void bsp_start( void )
112{
113  m68k_isr_entry *monitors_vector_table;
114  int             index;
115  rtems_unsigned8 node_number;
116
117  monitors_vector_table = (m68k_isr_entry *)0;   /* 147Bug Vectors are at 0 */
118  m68k_set_vbr( monitors_vector_table );
119
120  for ( index=2 ; index<=255 ; index++ )
121    M68Kvec[ index ] = monitors_vector_table[ 32 ];
122
123  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
124  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
125  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
126  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
127
128  m68k_set_vbr( &M68Kvec );
129
130  pcc->int_base_vector = PCC_BASE_VECTOR & 0xF0; 
131  /* Set the PCC int vectors base */
132 
133  /* VME shared memory configuration */
134  /* Only the first node shares its top 128k DRAM */
135
136  vme_lcsr->utility_interrupt_vector = VME_BASE_VECTOR & 0xF8;
137  /* Set VMEchip base interrupt vector */
138  vme_lcsr->utility_interrupt_mask |= 0x02;
139  /* Enable SIGLP interruption (see shm support) */
140  pcc->general_purpose_control &= 0x10;
141  /* Enable VME master interruptions */
142 
143  if (vme_lcsr->system_controller & 0x01) {
144    /* the board is system controller */
145    vme_lcsr->system_controller = 0x08; 
146    /* Make VME access round-robin */
147  }
148
149 
150  node_number = 
151    (rtems_unsigned8) 
152    (Configuration.User_multiprocessing_table->node - 1) & 0xF;
153  /* Get and store node ID, first node_number = 0 */
154  vme_gcsr->board_identification = node_number;
155
156  vme_lcsr->gcsr_base_address = node_number;
157  /* Setup the base address of this board's gcsr */
158  vme_lcsr->timer_configuration = 0x6a;
159  /* Enable VME time outs, maximum periods */
160
161  if (node_number == 0) {
162    pcc->slave_base_address = 0x01;
163    /* Set local DRAM base address on the VME bus to the DRAM size */
164
165    vme_lcsr->vme_bus_requester = 0x80;
166    while (! (vme_lcsr->vme_bus_requester & 0x40));
167    /* Get VMEbus mastership */
168    vme_lcsr->slave_address_modifier = 0xfb;
169    /* Share everything */
170    vme_lcsr->slave_configuration = 0x80;
171    /* Share local DRAM */
172    vme_lcsr->vme_bus_requester = 0x0;
173    /* release bus */
174  } else {
175    pcc->slave_base_address = 0;
176    /* Set local DRAM base address on the VME bus to 0 */
177
178    vme_lcsr->vme_bus_requester = 0x80;
179    while (! (vme_lcsr->vme_bus_requester & 0x40));
180    /* Get VMEbus mastership */
181    vme_lcsr->slave_address_modifier = 0x08;
182    /* Share only the short adress range */
183    vme_lcsr->slave_configuration = 0;
184    /* Don't share local DRAM */
185    vme_lcsr->vme_bus_requester = 0x0;
186    /* release bus */
187  }
188
189  vme_lcsr->master_address_modifier = 0;
190  /* Automatically set the address modifier */
191  vme_lcsr->master_configuration = 1;
192  /* Disable D32 transfers : they don't work on my VMEbus rack */
193
194  m68k_enable_caching();
195
196  /*
197   *  we only use a hook to get the C library initialized.
198   */
199
200  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
201
202  Cpu_table.predriver_hook = NULL;
203
204  Cpu_table.postdriver_hook = bsp_postdriver_hook;
205
206  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
207
208  Cpu_table.do_zero_of_workspace = TRUE;
209
210  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
211
212  Cpu_table.interrupt_stack_size = 4096;
213
214  Cpu_table.extra_mpci_receive_server_stack = 0;
215
216  /*
217   *  Copy the table
218   */
219
220  BSP_Configuration = Configuration;
221
222  BSP_Configuration.work_space_start = (void *)
223     (RAM_END - BSP_Configuration.work_space_size);
224
225  /*
226   * Tell libio how many fd's we want and allow it to tweak config
227   */
228
229  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
230}
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