source: rtems/c/src/lib/libbsp/mips/jmr3904/startup/bspstart.c @ 7a677fd7

4.104.114.84.9
Last change on this file since 7a677fd7 was 7a677fd7, checked in by Joel Sherrill <joel.sherrill@…>, on Dec 13, 2000 at 10:16:28 PM

2000-12-13 Joel Sherrill <joel@…>

  • README: Updated. We are now vectoring a clock tick ISR handler. But RTEMS is not returning from the ISR properly.
  • clock/clockdrv.c: Now causes interrupts but has not been calibrated.
  • include/bsp.h: Use <libcpu/tx3904.h>
  • startup/Makefile.am: Add setvec.c from shared.
  • startup/bspstart.c: Initialize the status register (SR) so no interrupts are masked but global interrupts (SR_IEC) are off. Added call to install the ISR prologue code.
  • wrapup/Makefile.am: Pick up more pieces from libcpu.
  • Property mode set to 100644
File size: 2.7 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) 1989-2000.
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
23/*
24 *  The original table from the application and our copy of it with
25 *  some changes.
26 */
27
28extern rtems_configuration_table Configuration;
29
30rtems_configuration_table  BSP_Configuration;
31
32rtems_cpu_table Cpu_table;
33
34char *rtems_progname;
35
36/*
37 *  Use the shared implementations of the following routines
38 */
39 
40void bsp_postdriver_hook(void);
41void bsp_libc_init( void *, unsigned32, int );
42
43/*
44 *  Function:   bsp_pretasking_hook
45 *  Created:    95/03/10
46 *
47 *  Description:
48 *      BSP pretasking hook.  Called just before drivers are initialized.
49 *      Used to setup libc and install any BSP extensions.
50 *
51 *  NOTES:
52 *      Must not use libc (to do io) from here, since drivers are
53 *      not yet initialized.
54 *
55 */
56 
57void bsp_pretasking_hook(void)
58{
59    extern int HeapBase;
60    extern int HeapSize;
61    void         *heapStart = &HeapBase;
62    unsigned long heapSize = (unsigned long)&HeapSize;
63    unsigned long ramSpace;
64
65    bsp_libc_init(heapStart, (unsigned32) heapSize, 0);
66
67#ifdef RTEMS_DEBUG
68    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
69#endif
70
71}
72 
73/*
74 *  bsp_start
75 *
76 *  This routine does the bulk of the system initialization.
77 */
78
79void bsp_start( void )
80{
81  extern int _end;
82  extern int WorkspaceBase;
83  /* Configure Number of Register Caches */
84
85  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
86  Cpu_table.postdriver_hook = bsp_postdriver_hook;
87  Cpu_table.interrupt_stack_size = 4096;
88
89  if ( BSP_Configuration.work_space_size >(512*1024) )
90   _sys_exit( 1 );
91
92  BSP_Configuration.work_space_start = (void *) &WorkspaceBase;
93
94  mips_set_sr( 0xff00 );  /* all interrupts unmasked but globally off */
95                          /* depend on the IRC to take care of things */
96  mips_install_isr_entries();
97}
98
99/* XXX */
100void clear_cache( void *address, size_t n )
101{
102}
103
104/* Structure filled in by get_mem_info.  Only the size field is
105   actually used (to clear bss), so the others aren't even filled in.  */
106
107struct s_mem
108{
109  unsigned int size;
110  unsigned int icsize;
111  unsigned int dcsize;
112};
113
114
115void
116get_mem_info (mem)
117     struct s_mem *mem;
118{
119  mem->size = 0x1000000;        /* XXX figure out something here */
120}
121
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