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
|
/**
* @file
*
* @ingroup mpc55xx
*
* @brief SD Card initialization code.
*/
/*
* Copyright (c) 2008
* Embedded Brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* rtems@embedded-brains.de
*
* 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.
*/
#include <stdio.h>
#include <mpc55xx/mpc55xx.h>
#include <mpc55xx/regs.h>
#include <mpc55xx/dspi.h>
#include <bsp.h>
#include <rtems/status-checks.h>
#ifdef MPC55XX_BOARD_MPC5566EVB
static rtems_status_code mpc55xx_dspi_init(void)
{
int rv = 0;
int i = 0;
char device_name [] = "/dev/spi0";
union SIU_PCR_tag pcr = MPC55XX_ZERO_FLAGS;
rv = rtems_libi2c_initialize();
RTEMS_CHECK_RV_SC( rv, "rtems_libi2c_initialize");
/* DSPI D inputs are taken from DSPI C */
SIU.DISR.R = 0x000000FC;
/* DSPI A signals */
pcr.B.PA = 1;
pcr.B.ODE = 0;
pcr.B.HYS = 0;
pcr.B.SRC = 3;
pcr.B.WPE = 1;
pcr.B.WPS = 1;
/* SCK */
pcr.B.OBE = 1;
pcr.B.IBE = 0;
SIU.PCR [93].R = pcr.R;
/* SIN */
pcr.B.OBE = 0;
pcr.B.IBE = 1;
SIU.PCR [94].R = pcr.R;
/* SOUT */
pcr.B.OBE = 1;
pcr.B.IBE = 0;
SIU.PCR [95].R = pcr.R;
/* PCSx */
pcr.B.OBE = 1;
pcr.B.IBE = 0;
SIU.PCR [96].R = pcr.R;
SIU.PCR [97].R = pcr.R;
SIU.PCR [98].R = pcr.R;
SIU.PCR [99].R = pcr.R;
SIU.PCR [100].R = pcr.R;
SIU.PCR [101].R = pcr.R;
mpc55xx_dspi_bus_table [3].master = 0;
for (i = 0; i < MPC55XX_DSPI_NUMBER; ++i) {
device_name [8] = (char) ('0' + i);
rv = rtems_libi2c_register_bus( device_name, (rtems_libi2c_bus_t *) &mpc55xx_dspi_bus_table [i]);
RTEMS_CHECK_RV_SC( rv, device_name);
}
return RTEMS_SUCCESSFUL;
}
#include <stdio.h>
#include <rtems/fsmount.h>
#include <rtems/dosfs.h>
#include <rtems/bdpart.h>
#include <rtems/console.h>
#include <libchip/spi-sd-card.h>
#define MPC55XX_DEVICE "sd-card-a"
#define MPC55XX_DEVICE_FILE "/dev/" MPC55XX_DEVICE
#define MPC55XX_PARTITION "/dev/sd-card-a1"
#define MPC55XX_MOUNT_POINT "/mnt"
static fstab_t mpc55xx_fs_table [] = { {
MPC55XX_PARTITION, MPC55XX_MOUNT_POINT,
"dosfs", RTEMS_FILESYSTEM_READ_WRITE,
FSMOUNT_MNT_OK | FSMOUNT_MNTPNT_CRTERR | FSMOUNT_MNT_FAILED,
FSMOUNT_MNT_OK
}, {
MPC55XX_DEVICE_FILE, MPC55XX_MOUNT_POINT,
"dosfs", RTEMS_FILESYSTEM_READ_WRITE,
FSMOUNT_MNT_OK | FSMOUNT_MNTPNT_CRTERR | FSMOUNT_MNT_FAILED,
0
}
};
sd_card_driver_entry sd_card_driver_table [] = {
{
.device_name = "/dev/sd-card-a",
.bus = 0,
.transfer_mode = SD_CARD_TRANSFER_MODE_DEFAULT,
.command = SD_CARD_COMMAND_DEFAULT,
/* response : whatever, */
.response_index = SD_CARD_COMMAND_SIZE,
.n_ac_max = SD_CARD_N_AC_MAX_DEFAULT,
.block_number = 0,
.block_size = 0,
.block_size_shift = 0,
.busy = true,
.verbose = true,
.schedule_if_busy = false
}
};
size_t sd_card_driver_table_size = sizeof( sd_card_driver_table) / sizeof( sd_card_driver_table [0]);
rtems_status_code mpc55xx_sd_card_init( bool mount)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
int rv = 0;
sd_card_driver_entry *e = &sd_card_driver_table [0];
RTEMS_DEBUG_PRINT( "Task started\n");
sc = mpc55xx_dspi_init();
RTEMS_CHECK_SC( rv, "Intitalize DSPI bus");
e->bus = mpc55xx_dspi_bus_table [0].bus_number;
sc = sd_card_register();
RTEMS_CHECK_SC( sc, "Register SD Card");
if (mount) {
sc = rtems_bdpart_register_from_disk( MPC55XX_DEVICE_FILE);
RTEMS_CHECK_SC( sc, "Initialize IDE partition table");
rv = rtems_fsmount( mpc55xx_fs_table, sizeof( mpc55xx_fs_table) / sizeof( mpc55xx_fs_table [0]), NULL);
RTEMS_CHECK_RV_SC( rv, "Mount file systems");
}
return RTEMS_SUCCESSFUL;
}
#endif /* MPC55XX_BOARD_MPC5566EVB */
|
