source: rtems/c/src/lib/libbsp/sh/gensh1/startup/bspstart.c @ 6dd5650

4.104.114.84.95
Last change on this file since 6dd5650 was 6dd5650, checked in by Joel Sherrill <joel.sherrill@…>, on Oct 12, 2001 at 9:05:50 PM

2001-10-12 Joel Sherrill <joel@…>

  • include/bsp.h, include/coverhd.h, start/start.S, startup/bspclean.c, startup/bspstart.c, startup/linkcmds: Fixed typo.
  • Property mode set to 100644
File size: 3.5 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 *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
8 *           Bernd Becker (becker@faw.uni-ulm.de)
9 *
10 *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
11 *
12 *  This program is distributed in the hope that it will be useful,
13 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
15 *
16 *
17 *  COPYRIGHT (c) 1998.
18 *  On-Line Applications Research Corporation (OAR).
19 *
20 *  The license and distribution terms for this file may be
21 *  found in the file LICENSE in this distribution or at
22 *  http://www.OARcorp.com/rtems/license.html.
23 *
24 *  $Id$
25 */
26
27#include <string.h>
28
29#include <bsp.h>
30#include <rtems/libio.h>
31#include <rtems/libcsupport.h>
32 
33/*
34 *  The original table from the application and our copy of it with
35 *  some changes.
36 */
37
38extern rtems_configuration_table Configuration;
39
40rtems_configuration_table  BSP_Configuration;
41
42rtems_cpu_table Cpu_table;
43
44char *rtems_progname;
45
46/*
47 *  Use the shared implementations of the following routines
48 */
49 
50void bsp_postdriver_hook(void);
51void bsp_libc_init( void *, unsigned32, int );
52
53/*
54 *  Function:   bsp_pretasking_hook
55 *
56 *  Description:
57 *      BSP pretasking hook.  Called just before drivers are initialized.
58 *      Used to setup libc and install any BSP extensions.
59 *
60 *  NOTES:
61 *      Must not use libc (to do io) from here, since drivers are
62 *      not yet initialized.
63 *
64 */
65 
66void bsp_pretasking_hook(void)
67{
68    bsp_libc_init(&HeapStart, sizeof(unsigned32) * (&HeapEnd - &HeapStart), 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     For real boards you need to setup the hardware
85     and need to copy the vector table from rom to ram.
86
87     Depending on the board this can either be done from inside the rom
88     startup code, rtems startup code or here.
89   */
90   
91  /*
92   *  Allocate the memory for the RTEMS Work Space.  This can come from
93   *  a variety of places: hard coded address, malloc'ed from outside
94   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
95   *  typically done by stock BSPs) by subtracting the required amount
96   *  of work space from the last physical address on the CPU board.
97   */
98
99  /*
100   *  Need to "allocate" the memory for the RTEMS Workspace and
101   *  tell the RTEMS configuration where it is.  This memory is
102   *  not malloc'ed.  It is just "pulled from the air".
103   */
104
105  BSP_Configuration.work_space_start = (void *) &WorkSpaceStart ;
106  BSP_Configuration.work_space_size  = 
107    (unsigned32) &WorkSpaceEnd - 
108    (unsigned32) &WorkSpaceStart ;
109 
110  /*
111   *  initialize the CPU table for this BSP
112   */
113
114#if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE )
115  _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ;
116  _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ;
117
118  Cpu_table.interrupt_stack_size = 
119    (unsigned32) (&CPU_Interrupt_stack_high) -
120    (unsigned32) (&CPU_Interrupt_stack_low) ;
121#endif
122
123
124  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
125  Cpu_table.postdriver_hook = bsp_postdriver_hook;
126 
127#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
128  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
129#endif
130  Cpu_table.clicks_per_second = CPU_CLOCK_RATE_HZ ;
131}
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