source: rtems/c/src/lib/libbsp/mips/genmongoosev/startup/bspstart.c @ c9e7297

4.104.114.84.95
Last change on this file since c9e7297 was c9e7297, checked in by Joel Sherrill <joel.sherrill@…>, on 04/16/01 at 19:30:13

2001-04-16 Joel Sherrill <joel@…>

  • start/start.S, startup/bspstart.c, startup/linkcmds: Modifications made with Gregory Menke <gregory.menke@…> as he debugged this BSP using a logic analyzer.
  • Property mode set to 100644
File size: 3.2 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) 1989-2001.
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 *  $Id$
15 */
16
17#include <string.h>
18
19#include <bsp.h>
20#include <rtems/libio.h>
21#include <rtems/libcsupport.h>
22#include <libcpu/mongoose-v.h>
23
24/*
25 *  The original table from the application and our copy of it with
26 *  some changes.
27 */
28
29extern rtems_configuration_table Configuration;
30
31rtems_configuration_table  BSP_Configuration;
32
33rtems_cpu_table Cpu_table;
34
35char *rtems_progname;
36
37/*
38 *  Use the shared implementations of the following routines
39 */
40 
41void bsp_postdriver_hook(void);
42void bsp_libc_init( void *, unsigned32, int );
43
44/*
45 *  Function:   bsp_pretasking_hook
46 *  Created:    95/03/10
47 *
48 *  Description:
49 *      BSP pretasking hook.  Called just before drivers are initialized.
50 *      Used to setup libc and install any BSP extensions.
51 *
52 *  NOTES:
53 *      Must not use libc (to do io) from here, since drivers are
54 *      not yet initialized.
55 *
56 */
57 
58void bsp_pretasking_hook(void)
59{
60    extern int HeapBase;
61    extern int HeapSize;
62    void         *heapStart = &HeapBase;
63    unsigned long heapSize = (unsigned long)&HeapSize;
64    unsigned long ramSpace;
65
66    bsp_libc_init(heapStart, (unsigned32) heapSize, 0);
67
68#ifdef RTEMS_DEBUG
69    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
70#endif
71
72}
73 
74/*
75 *  bsp_start
76 *
77 *  This routine does the bulk of the system initialization.
78 */
79
80void bsp_start( void )
81{
82  extern int _end;
83  extern int WorkspaceBase;
84  /* Configure Number of Register Caches */
85
86  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
87  Cpu_table.postdriver_hook = bsp_postdriver_hook;
88  Cpu_table.interrupt_stack_size = 4096;
89
90  /* HACK -- tied to value linkcmds */
91  if ( BSP_Configuration.work_space_size >(4096*1024) )
92   _sys_exit( 1 );
93
94  BSP_Configuration.work_space_start = (void *) &WorkspaceBase;
95
96  /*mips_set_sr( 0xff00 );   all interrupts unmasked but globally off */
97                          /* depend on the IRC to take care of things */
98
99  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_CAUSE_REGISTER, 0 );
100  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_MASK_REGISTER, 0 );
101
102  /*
103  mips_set_sr( (SR_CU0 | SR_CU1 | SR_IBIT1 | SR_IBIT2 | SR_IBIT3 | SR_IBIT4 | SR_IBIT6 | SR_IBIT8) );
104  */
105  mips_set_sr( (SR_CU0 | SR_CU1 | SR_IBIT1 | SR_IBIT2) );
106
107  mips_install_isr_entries();
108
109  MONGOOSEV_WRITE( MONGOOSEV_PERIPHERAL_FUNCTION_INTERRUPT_CAUSE_REGISTER, 0 );
110}
111
112/* XXX */
113void clear_cache( void *address, size_t n )
114{
115}
116
117/* Structure filled in by get_mem_info.  Only the size field is
118   actually used (to clear bss), so the others aren't even filled in.  */
119
120struct s_mem
121{
122  unsigned int size;
123  unsigned int icsize;
124  unsigned int dcsize;
125};
126
127
128void
129get_mem_info (mem)
130     struct s_mem *mem;
131{
132  mem->size = 0x1000000;        /* XXX figure out something here */
133}
134
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