source: rtems/c/src/lib/libbsp/mips/jmr3904/startup/bspstart.c @ 6ea100c1

4.104.114.9
Last change on this file since 6ea100c1 was 6ea100c1, checked in by Joel Sherrill <joel.sherrill@…>, on May 12, 2008 at 6:43:55 PM

2008-05-12 Joel Sherrill <joel.sherrill@…>

  • startup/bspstart.c: Refactored and renamed initialization routines to rtems_initialize_data_structures, rtems_initialize_before_drivers, rtems_initialize_device_drivers, and rtems_initialize_start_multitasking. This opened the sequence up so that bootcard() could provide a more robust and flexible framework which is easier to explain and understand. This also lays the groundwork for sharing the division of available memory between the RTEMS workspace and heap and the C library initialization across all BSPs.
  • Property mode set to 100644
File size: 2.3 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.rtems.com/license/LICENSE.
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 *  Use the shared implementations of the following routines
25 */
26
27void bsp_libc_init( void *, uint32_t, int );
28
29/*
30 *  Function:   bsp_pretasking_hook
31 *  Created:    95/03/10
32 *
33 *  Description:
34 *      BSP pretasking hook.  Called just before drivers are initialized.
35 *      Used to setup libc and install any BSP extensions.
36 *
37 *  NOTES:
38 *      Must not use libc (to do io) from here, since drivers are
39 *      not yet initialized.
40 *
41 */
42
43void bsp_pretasking_hook(void)
44{
45    extern int HeapBase;
46    extern int HeapSize;
47    void         *heapStart = &HeapBase;
48    unsigned long heapSize = (unsigned long)&HeapSize;
49
50    bsp_libc_init(heapStart, (uint32_t) heapSize, 0);
51
52#ifdef RTEMS_DEBUG
53    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
54#endif
55
56}
57
58/*
59 *  bsp_start
60 *
61 *  This routine does the bulk of the system initialization.
62 */
63
64void bsp_start( void )
65{
66  extern int WorkspaceBase;
67  extern void _sys_exit(int);
68  extern void mips_install_isr_entries(void);
69
70  /* HACK -- tied to value linkcmds */
71  if ( rtems_configuration_get_work_space_size() >(4096*1024) )
72   _sys_exit( 1 );
73
74  Configuration.work_space_start = (void *) &WorkspaceBase;
75
76  mips_set_sr( 0xff00 );  /* all interrupts unmasked but globally off */
77                          /* depend on the IRC to take care of things */
78  mips_install_isr_entries();
79}
80
81/* XXX */
82void clear_cache( void *address, size_t n )
83{
84}
85
86/* Structure filled in by get_mem_info.  Only the size field is
87   actually used (to clear bss), so the others aren't even filled in.  */
88
89struct s_mem
90{
91  unsigned int size;
92  unsigned int icsize;
93  unsigned int dcsize;
94};
95
96void
97get_mem_info (mem)
98     struct s_mem *mem;
99{
100  mem->size = 0x1000000;        /* XXX figure out something here */
101}
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