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
176
177
178
179
180
181
182
183
184
185
186
|
/*
ChibiOS/RT - Copyright (C) 2006-2014 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Concepts and parts of this file have been contributed by Uladzimir Pylinsky
aka barthess.
*/
/*
TODO:
write memtest function using ideas from http://www.memtest86.com/technical.htm
*/
#include "ch.h"
#include "hal.h"
#include "string.h"
#include "fsmc_sdram.h"
/*
******************************************************************************
* DEFINES
******************************************************************************
*/
#define USE_INFINITE_MEMTEST FALSE
/*
******************************************************************************
* EXTERNS
******************************************************************************
*/
/*
******************************************************************************
* PROTOTYPES
******************************************************************************
*/
/*
******************************************************************************
* GLOBAL VARIABLES
******************************************************************************
*/
static uint32_t extram_check_buf[16 * 1024];
static uint32_t *extram_start = (uint32_t *)STM32_SDRAM1_MAP_BASE;
static const size_t extram_size = 1024*1024;
/*
* SDRAM driver configuration structure.
*/
static const SDRAMConfig sdram_cfg = {
.sdcr1 = (uint32_t) FMC_ColumnBits_Number_9b |
FMC_RowBits_Number_13b |
FMC_SDMemory_Width_16b |
FMC_InternalBank_Number_4 |
FMC_CAS_Latency_3 |
FMC_Write_Protection_Disable |
FMC_SDClock_Period_3 |
FMC_Read_Burst_Enable |
FMC_ReadPipe_Delay_1,
.sdtr1 = (uint32_t) (2 - 1) | // FMC_LoadToActiveDelay = 2 (TMRD: 2 Clock cycles)
(7 << 4) | // FMC_ExitSelfRefreshDelay = 7 (TXSR: min=70ns (7x11.11ns))
(4 << 8) | // FMC_SelfRefreshTime = 4 (TRAS: min=42ns (4x11.11ns) max=120k (ns))
(7 << 12) | // FMC_RowCycleDelay = 7 (TRC: min=70 (7x11.11ns))
(2 << 16) | // FMC_WriteRecoveryTime = 2 (TWR: min=1+ 7ns (1+1x11.11ns))
(2 << 20) | // FMC_RPDelay = 2 (TRP: 20ns => 2x11.11ns)
(2 << 24) // FMC_RCDDelay = 2 (TRCD: 20ns => 2x11.11ns)
};
/* benchmarking results in MiB/S */
double memset_speed_ext;
double memset_speed_int;
double memcpy_speed_ext2int;
double memcpy_speed_int2ext;
/*
******************************************************************************
******************************************************************************
* LOCAL FUNCTIONS
******************************************************************************
******************************************************************************
*/
/**
*
*/
static void extram_benchmark(void){
size_t i=0;
time_measurement_t mem_tmu;
/* memset speed ext */
chTMObjectInit(&mem_tmu);
chTMStartMeasurementX(&mem_tmu);
memset(extram_start, 0x55, extram_size);
//memset(extram_start, 0x00, extram_size);
chTMStopMeasurementX(&mem_tmu);
memset_speed_ext = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
/* memset speed int */
chTMObjectInit(&mem_tmu);
chTMStartMeasurementX(&mem_tmu);
for (i=0; i<16; i++)
memset(extram_check_buf, i, sizeof(extram_check_buf));
chTMStopMeasurementX(&mem_tmu);
memset_speed_int = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
/* memcpy ext2int */
chTMObjectInit(&mem_tmu);
chTMStartMeasurementX(&mem_tmu);
for (i=0; i<16; i++)
memcpy(extram_check_buf, extram_start+ i * sizeof(extram_check_buf), sizeof(extram_check_buf));
chTMStopMeasurementX(&mem_tmu);
memcpy_speed_ext2int = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
/* memcpy int2ext */
chTMObjectInit(&mem_tmu);
memset(extram_check_buf, 0xAA, sizeof(extram_check_buf));
chTMStartMeasurementX(&mem_tmu);
for (i=0; i<16; i++)
memcpy(extram_start + i * sizeof(extram_check_buf), extram_check_buf, sizeof(extram_check_buf));
chTMStopMeasurementX(&mem_tmu);
memcpy_speed_int2ext = 1 / (mem_tmu.cumulative / (double)STM32_SYSCLK);
}
/**
*
*/
#if USE_INFINITE_MEMTEST
static void memstest(void){
while (true) {
;
}
}
#endif /* USE_INFINITE_MEMTEST */
/*
******************************************************************************
* EXPORTED FUNCTIONS
******************************************************************************
*/
/*
* Application entry point.
*/
int main(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
chSysInit();
fsmcSdramInit();
fsmcSdramStart(&SDRAMD, &sdram_cfg);
extram_benchmark();
#if USE_INFINITE_MEMTEST
memtest();
#endif
/*
* Normal main() thread activity, in this demo it does nothing.
*/
while (TRUE) {
chThdSleepMilliseconds(500);
}
}
|
