blob: 6d0ca0644bb2ce5b894cde244395d9cf5b9304b5 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* This routine starts the application. It includes application,
* board, and monitor specific initialization and configuration.
* The generic CPU dependent initialization has been performed
* before this routine is invoked.
*
* COPYRIGHT (c) 1989-2000.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <string.h>
#include <bsp.h>
#include <libcpu/au1x00.h>
#include <rtems/libio.h>
#include <rtems/libcsupport.h>
/*
* The original table from the application and our copy of it with
* some changes.
*/
extern void *_sdram_size;
extern void *_sdram_base;
extern void *_bss_free_start;
unsigned long free_mem_start;
unsigned long free_mem_end;
au1x00_uart_t *uart0 = (au1x00_uart_t *)AU1X00_UART0_ADDR;
au1x00_uart_t *uart3 = (au1x00_uart_t *)AU1X00_UART3_ADDR;
/*
* Use the shared implementations of the following routines
*/
void bsp_libc_init( void *, uint32_t, int );
/*
* Function: bsp_pretasking_hook
* Created: 95/03/10
*
* Description:
* BSP pretasking hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*
* NOTES:
* Must not use libc (to do io) from here, since drivers are
* not yet initialized.
*
*/
void bsp_pretasking_hook(void)
{
uint32_t heap_start;
uint32_t heap_size;
/*
* Set up the heap.
*/
heap_start = free_mem_start;
heap_size = free_mem_end - free_mem_start;
/* call rtems lib init - malloc stuff */
bsp_libc_init((void *)heap_start, heap_size, 0);
#ifdef RTEMS_DEBUG
rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
#endif
}
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
extern void mips_install_isr_entries(void);
unsigned int compare = 0;
/* Place RTEMS workspace at beginning of free memory. */
Configuration.work_space_start = (void *)&_bss_free_start;
free_mem_start = ((uint32_t)&_bss_free_start +
rtems_configuration_get_work_space_size());
free_mem_end = ((uint32_t)&_sdram_base + (uint32_t)&_sdram_size);
mips_set_sr( 0x7f00 ); /* all interrupts unmasked but globally off */
/* depend on the IRC to take care of things */
asm volatile ("mtc0 %0, $11\n" :: "r" (compare));
mips_install_isr_entries();
}
/* These replace the ones in newlib. I'm not sure why the newlib ones
* don't work.
*/
void _init(void)
{
}
void _fini(void)
{
}
|