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
|
/************************************************************************************
* configs/sama5d3x-ek/src/sam_boot.c
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include "sama5d3x-ek.h"
/************************************************************************************
* Definitions
************************************************************************************/
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_boardinitialize
*
* Description:
* All SAMA5 architectures must provide the following entry point. This entry
* point is called early in the intitialization -- after all memory has been
* configured and mapped but before any devices have been initialized.
*
************************************************************************************/
void sam_boardinitialize(void)
{
/* Configure SPI chip selects if 1) SPI is enable, and 2) the weak function
* sam_spiinitialize() has been brought into the link.
*/
#if defined(CONFIG_SAMA5_SPI0) || defined(CONFIG_SAMA5_SPI1)
if (sam_spiinitialize)
{
sam_spiinitialize();
}
#endif
#if defined(CONFIG_SAMA5_DDRCS) && !defined(CONFIG_SAMA5_BOOT_SDRAM)
/* Configure SDRAM if (1) SDRAM has been enalbled in the NuttX configuration and
* (2) if we are not currently running out of SDRAM. If we are now running out
* of SDRAM then we have to assume that some second level bootloader has properly
* configured SDRAM for our use.
*/
sam_sdram_config();
#endif
/* Initialize USB if the 1) the HS host or device controller is in the
* configuration and 2) the weak function sam_usbinitialize() has been brought
* into the build. Presumeably either CONFIG_USBDEV or CONFIG_USBHOST is also
* selected.
*/
#if defined(CONFIG_SAMA5_UHPHS) || defined(CONFIG_SAMA5_UDPHS)
if (sam_usbinitialize)
{
sam_usbinitialize();
}
#endif
#ifdef CONFIG_ARCH_LEDS
/* Configure on-board LEDs if LED support has been selected. */
up_ledinit();
#endif
}
|