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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/****************************************************************************
* arch/arm/src/common/sam3u_allocateheap.c
*
* Copyright (C) 2010 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 <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/kmalloc.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
#include "sam3u_internal.h"
/****************************************************************************
* Private Definitions
****************************************************************************/
#if CONFIG_MM_REGIONS < 2
# warning "CONFIG_MM_REGIONS < 2: SRAM1 not included in HEAP"
#endif
#if CONFIG_MM_REGIONS < 3 && !defined(CONFIG_SAM3U_NAND)
# warning "CONFIG_MM_REGIONS < 3: NFC SRAM not included in HEAP"
#endif
#if CONFIG_MM_REGIONS > 2 && defined(CONFIG_SAM3U_NAND)
# error "CONFIG_MM_REGIONS > 3 but cannot used NFC SRAM"
# undef CONFIG_MM_REGIONS
# define CONFIG_MM_REGIONS 2
#endif
#if CONFIG_DRAM_END > (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE)
# error "CONFIG_DRAM_END is beyond the end of SRAM0"
# undef CONFIG_DRAM_END
# define CONFIG_DRAM_END (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE)
#elif CONFIG_DRAM_END < (SAM3U_INTSRAM0_BASE+CONFIG_SAM3U_SRAM0_SIZE)
# warning "CONFIG_DRAM_END is before end of SRAM0... not all of SRAM0 used"
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_allocate_heap
*
* Description:
* The heap may be statically allocated by
* defining CONFIG_HEAP_BASE and CONFIG_HEAP_SIZE. If these
* are not defined, then this function will be called to
* dynamically set aside the heap region.
*
****************************************************************************/
void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
{
size_t size = CONFIG_DRAM_END - g_heapbase;
/* Return the heap settings */
up_ledon(LED_HEAPALLOCATE);
*heap_start = (FAR void*)g_heapbase;
*heap_size = size;
/* Allow access to the heap memory */
sam3u_mpuheap((uintptr_t)g_heapbase, size);
}
/************************************************************************
* Name: up_addregion
*
* Description:
* Memory may be added in non-contiguous chunks. Additional chunks are
* added by calling this function.
*
************************************************************************/
#if CONFIG_MM_REGIONS > 1
void up_addregion(void)
{
/* Add the region */
kmm_addregion((FAR void*)SAM3U_INTSRAM1_BASE, CONFIG_SAM3U_SRAM1_SIZE);
/* Allow access to the heap memory */
sam3u_mpuheap(SAM3U_INTSRAM1_BASE, CONFIG_SAM3U_SRAM1_SIZE);
/* Add the region */
#if CONFIG_MM_REGIONS > 2
kmm_addregion((FAR void*)SAM3U_NFCSRAM_BASE, CONFIG_SAM3U_NFCSRAM_SIZE);
/* Allow access to the heap memory */
sam3u_mpuheap(SAM3U_NFCSRAM_BASE, CONFIG_SAM3U_NFCSRAM_SIZE);
#endif
}
#endif
|
