source: rtems/c/src/lib/libbsp/sparc/leon3/startup/bspstart.c @ 28b6765d

4.104.11
Last change on this file since 28b6765d was 28b6765d, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 15, 2008 at 12:23:55 AM

2008-09-14 Joel Sherrill <joel.sherrill@…>

  • Makefile.am, startup/bspstart.c: Use shared bsp_get_work_area() into its own file and use BSP Framework to perform more initialization.
  • Property mode set to 100644
File size: 1.4 KB
RevLine 
[41c9282]1/*
2 *  This set of routines 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 any of these are invoked.
6 *
[6dacdf9d]7 *  COPYRIGHT (c) 1989-2007.
[41c9282]8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  Modified for LEON3 BSP.
11 *  COPYRIGHT (c) 2004.
12 *  Gaisler Research.
13 *
14 *  The license and distribution terms for this file may be
15 *  found in the file LICENSE in this distribution or at
16 *  http://www.rtems.com/license/LICENSE.
17 *
18 *  $Id$
19 */
20
21
22#include <bsp.h>
[6dacdf9d]23#include <rtems/bspIo.h>
[41c9282]24
[4cb04f2]25/*
26 * Tells us if data cache snooping is available
27 */ 
28int CPU_SPARC_HAS_SNOOPING;
29
30/*
31 * set_snooping
32 *
33 * Read the data cache configuration register to determine if
34 * bus snooping is available. This is needed for some drivers so
35 * that they can select the most efficient copy routines. 
36 *
37 */
38
39static inline int set_snooping(void) 
40{
[4c94fff]41  int tmp;       
42  asm(" lda [%1] 2, %0 "
43      : "=r"(tmp)
44      : "r"(0xC)
45  );
46  return (tmp >> 27) & 1;
[4cb04f2]47}
48
[41c9282]49/*
50 *  bsp_pretasking_hook
51 *
52 *  BSP pretasking hook.  Called just before drivers are initialized.
[4c94fff]53 *  Used to setup libc and install any BSP extensions     .
[41c9282]54 */
55
56void bsp_pretasking_hook(void)
57{
58  bsp_spurious_initialize();
59}
60
61/*
62 *  bsp_start
63 *
64 *  This routine does the bulk of the system initialization.
65 */
66void bsp_start( void )
67{
[4cb04f2]68  CPU_SPARC_HAS_SNOOPING = set_snooping();
[41c9282]69}
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