source: rtems/c/src/lib/libbsp/sh/simsh4/startup/bspstart.c @ f05b2ac

4.104.114.84.9
Last change on this file since f05b2ac was f05b2ac, checked in by Ralf Corsepius <ralf.corsepius@…>, on Apr 21, 2004 at 4:01:48 PM

Remove duplicate white lines.

  • Property mode set to 100644
File size: 3.6 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 *  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) 1998-2001.
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.rtems.com/license/LICENSE.
23 *
24 *  $Id$
25 */
26
27#include <bsp.h>
28#include <rtems/libio.h>
29
30#include <rtems/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 void bsp_hw_init(void);
40
41extern rtems_configuration_table Configuration;
42
43rtems_configuration_table  BSP_Configuration;
44
45rtems_cpu_table Cpu_table;
46
47char *rtems_progname;
48
49/*
50 *  Use the shared implementations of the following routines
51 */
52
53void bsp_postdriver_hook(void);
54void bsp_libc_init( void *, uint32_t, int );
55
56/*
57 *  Function:   bsp_pretasking_hook
58 *
59 *  Description:
60 *      BSP pretasking hook.  Called just before drivers are initialized.
61 *      Used to setup libc and install any BSP extensions.
62 *
63 *  NOTES:
64 *      Must not use libc (to do io) from here, since drivers are
65 *      not yet initialized.
66 *
67 */
68
69void bsp_pretasking_hook(void)
70{
71    bsp_libc_init(&HeapStart, (char *)&HeapEnd - (char *)&HeapStart, 0);
72
73#ifdef RTEMS_DEBUG
74    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
75#endif
76}
77
78/*
79 *  bsp_start
80 *
81 *  This routine does the bulk of the system initialization.
82 */
83
84void bsp_start(void)
85{
86  /*
87     For real boards you need to setup the hardware
88     and need to copy the vector table from rom to ram.
89
90     Depending on the board this can ether be done from inside the rom
91     startup code, rtems startup code or here.
92   */
93
94#ifndef START_HW_INIT
95  /* board hardware setup here, or from 'start.S' */
96  bsp_hw_init();
97#endif
98
99  /*
100   *  Allocate the memory for the RTEMS Work Space.  This can come from
101   *  a variety of places: hard coded address, malloc'ed from outside
102   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
103   *  typically done by stock BSPs) by subtracting the required amount
104   *  of work space from the last physical address on the CPU board.
105   */
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 *) &WorkSpaceStart ;
114  BSP_Configuration.work_space_size  =
115    (uint32_t) &WorkSpaceEnd -
116    (uint32_t) &WorkSpaceStart ;
117
118  /*
119   *  initialize the CPU table for this BSP
120   */
121
122#if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE )
123  _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ;
124  _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ;
125
126  /* This isn't used anywhere */
127  Cpu_table.interrupt_stack_size =
128    (uint32_t) (&CPU_Interrupt_stack_high) -
129    (uint32_t) (&CPU_Interrupt_stack_low) ;
130#endif
131
132  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
133  Cpu_table.postdriver_hook = bsp_postdriver_hook;
134
135#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE )
136  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
137#endif
138
139  Cpu_table.clicks_per_second = CPU_CLOCK_RATE_HZ ;
140}
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