source: rtems/c/src/lib/libbsp/m68k/ods68302/startup/bspstart.c @ b6394ae

4.104.114.84.95
Last change on this file since b6394ae was b6394ae, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 15, 1998 at 3:13:01 PM

Transitioned to shared bsp_libc_init() and cleaned up comments.

  • Property mode set to 100644
File size: 3.4 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) 1989-1998.
8 *  On-Line Applications Research Corporation (OAR).
9 *  Copyright assigned to U.S. Government, 1994.
10 *
11 *  The license and distribution terms for this file may be
12 *  found in the file LICENSE in this distribution or at
13 *  http://www.OARcorp.com/rtems/license.html.
14 *
15 *  $Id$
16 */
17
18#include <bsp.h>
19#include <rtems/libio.h>
20 
21#include <libcsupport.h>
22 
23#include <string.h>
24 
25/*
26 *  The original table from the application and our copy of it with
27 *  some changes.
28 */
29
30extern rtems_configuration_table Configuration;
31rtems_configuration_table  BSP_Configuration;
32
33rtems_cpu_table Cpu_table;
34rtems_interrupt_level bsp_isr_level;
35
36char *rtems_progname;
37
38/*
39 *  Use the shared implementations of the following routines
40 */
41 
42void bsp_postdriver_hook(void);
43void bsp_libc_init( void *, unsigned32, int );
44
45/*
46 *  Function:   bsp_pretasking_hook
47 *  Created:    95/03/10
48 *
49 *  Description:
50 *      BSP pretasking hook.  Called just before drivers are initialized.
51 *      Used to setup libc and install any BSP extensions.
52 *
53 *  NOTES:
54 *      Must not use libc (to do io) from here, since drivers are
55 *      not yet initialized.
56 *
57 */
58 
59void bsp_pretasking_hook(void)
60{
61    extern int end;
62    rtems_unsigned32        heap_start;
63
64    heap_start = (rtems_unsigned32) &end;
65    if (heap_start & (CPU_ALIGNMENT-1))
66        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
67
68    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
69 
70#ifdef RTEMS_DEBUG
71    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
72#endif
73}
74 
75/*
76 *  bsp_start
77 *
78 *  This routine does the bulk of the system initialization.
79 */
80
81void bsp_start( void )
82{
83  /*
84   *  Allocate the memory for the RTEMS Work Space.  This can come from
85   *  a variety of places: hard coded address, malloc'ed from outside
86   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
87   *  typically done by stock BSPs) by subtracting the required amount
88   *  of work space from the last physical address on the CPU board.
89   */
90#if 0
91  Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/;
92#endif
93
94
95  /*
96   *  Copy the Configuration Table .. so we can change it
97   */
98
99  BSP_Configuration = Configuration;
100
101  /*
102   * Tell libio how many fd's we want and allow it to tweak config
103   */
104
105  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
106
107  /*
108   *  Need to "allocate" the memory for the RTEMS Workspace and
109   *  tell the RTEMS configuration where it is.  This memory is
110   *  not malloc'ed.  It is just "pulled from the air".
111   */
112
113  BSP_Configuration.work_space_start = (void *)
114      (RAM_END - BSP_Configuration.work_space_size);
115
116  /*
117   *  initialize the CPU table for this BSP
118   */
119
120  /*
121   *  we do not use the pretasking_hook
122   */
123
124  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
125
126  Cpu_table.predriver_hook = NULL;
127
128  Cpu_table.postdriver_hook = bsp_postdriver_hook;
129
130  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
131
132  Cpu_table.do_zero_of_workspace = TRUE;
133
134  Cpu_table.interrupt_stack_size = 4096;
135
136  Cpu_table.extra_mpci_receive_server_stack = 0;
137
138  /*
139   *  Don't forget the other CPU Table entries.
140   */
141}
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