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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/************************************************************************
* arch/arm/src/lpc313x/lpc313x_allocateheap.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "lpc313x_memorymap.h"
/************************************************************************
* Pre-processor Definitions
************************************************************************/
/* Configuration ********************************************************/
/* Some sanity checking. If external memory regions are defined, verify
* that CONFIG_MM_REGIONS is set to match, exactly, the number of external
* memory regions that we have been asked to add to the heap.
*/
#if defined(CONFIG_LPC313X_EXTSRAM0) && defined(CONFIG_LPC313X_EXTSRAM0HEAP)
# if defined(CONFIG_LPC313X_EXTSRAM1) && defined(CONFIG_LPC313X_EXTSRAM1HEAP)
# if defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
# /* SRAM+EXTSRAM0+EXTSRAM1+EXTSDRAM */
# define LPC313X_NEXT_REGIONS 4
# else
# /* SRAM+EXTSRAM0+EXTSRAM1 */
# define LPC313X_NEXT_REGIONS 3
# endif
# elif defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
# /* SRAM+EXTSRAM0+EXTSDRAM */
# define LPC313X_NEXT_REGIONS 3
# else
# /* SRAM+EXTSRAM0 */
# define LPC313X_NEXT_REGIONS 2
# endif
#elif defined(CONFIG_LPC313X_EXTSRAM1) && defined(CONFIG_LPC313X_EXTSRAM1HEAP)
# if defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
# /* SRAM+EXTSRAM1+EXTSDRAM */
# define LPC313X_NEXT_REGIONS 3
# else
# /* SRAM+EXTSRAM1 */
# define LPC313X_NEXT_REGIONS 2
# endif
#elif defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
# /* SRAM+EXTSDRAM */
# define LPC313X_NEXT_REGIONS 2
#else
# /* SRAM */
# define LPC313X_NEXT_REGIONS 1
#endif
#if CONFIG_MM_REGIONS != LPC313X_NEXT_REGIONS
# if CONFIG_MM_REGIONS < LPC313X_NEXT_REGIONS
# error "CONFIG_MM_REGIONS is large enough for the selected memory regions"
# else
# error "CONFIG_MM_REGIONS is too large for the selected memory regions"
# endif
# if defined(CONFIG_LPC313X_EXTSRAM0) && defined(CONFIG_LPC313X_EXTSRAM0HEAP)
# error "External SRAM0 is selected for heap"
# endif
# if defined(CONFIG_LPC313X_EXTSRAM1) && defined(CONFIG_LPC313X_EXTSRAM1HEAP)
# error "External SRAM1 is selected for heap"
# endif
# if defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
# error "External SRAM1 is selected for heap"
# endif
#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 to the end
* of SRAM.
*
* SRAM layout:
* Start of SRAM: .data
* .bss
* IDLE thread stack
* End of SRAm: heap
*
* NOTE: Ignore the erroneous nomenclature DRAM and SDRAM. That names
* date back to an earlier platform that had SDRAM.
*
************************************************************************/
void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
{
up_ledon(LED_HEAPALLOCATE);
*heap_start = (FAR void*)g_heapbase;
*heap_size = (LPC313X_SRAM_VADDR + CONFIG_DRAM_SIZE) - g_heapbase;
}
/************************************************************************
* 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)
{
#if defined(CONFIG_LPC313X_EXTSRAM0) && defined(CONFIG_LPC313X_EXTSRAM0HEAP)
mm_addregion((FAR void*)LPC313X_EXTSRAM0_VSECTION, CONFIG_LPC313X_EXTSRAM0SIZE);
#endif
#if defined(CONFIG_LPC313X_EXTSRAM1) && defined(CONFIG_LPC313X_EXTSRAM1HEAP)
mm_addregion((FAR void*)LPC313X_EXTSRAM1_VSECTION, CONFIG_LPC313X_EXTSRAM1SIZE);
#endif
#if defined(CONFIG_LPC313X_EXTSDRAM) && defined(CONFIG_LPC313X_EXTSDRAMHEAP)
mm_addregion((FAR void*)LPC313X_EXTSDRAM_VSECTION, CONFIG_LPC313X_EXTSDRAMSIZE);
#endif
}
#endif
|