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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
#include <common.h>
#include <mpc8xx.h>
#include <pcmcia.h>
#undef CONFIG_PCMCIA
#if defined(CONFIG_CMD_PCMCIA)
#define CONFIG_PCMCIA
#endif
#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
#define CONFIG_PCMCIA
#endif
#ifdef CONFIG_PCMCIA
#define PCMCIA_BOARD_MSG "C2MON"
static void cfg_ports (void)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
ushort sreg;
immap = (immap_t *)CFG_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
/*
* Configure Port C for TPS2211 PC-Card Power-Interface Switch
*
* Switch off all voltages, assert shutdown
*/
sreg = immap->im_ioport.iop_pcdat;
sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1); /* VAVPP => Hi-Z */
sreg &= ~(TPS2211_VCCD0 | TPS2211_VCCD1); /* 3V and 5V off */
immap->im_ioport.iop_pcdat = sreg;
immap->im_ioport.iop_pcpar &= ~(TPS2211_OUTPUTS);
immap->im_ioport.iop_pcdir |= TPS2211_OUTPUTS;
debug ("Set Port C: PAR: %04x DIR: %04x DAT: %04x\n",
immap->im_ioport.iop_pcpar,
immap->im_ioport.iop_pcdir,
immap->im_ioport.iop_pcdat);
/*
* Configure Port B for TPS2211 PC-Card Power-Interface Switch
*
* Over-Current Input only
*/
cp->cp_pbpar &= ~(TPS2211_INPUTS);
cp->cp_pbdir &= ~(TPS2211_INPUTS);
debug ("Set Port B: PAR: %08x DIR: %08x DAT: %08x\n",
cp->cp_pbpar, cp->cp_pbdir, cp->cp_pbdat);
}
int pcmcia_hardware_enable(int slot)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
volatile sysconf8xx_t *sysp;
uint reg, pipr, mask;
ushort sreg;
int i;
debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
udelay(10000);
immap = (immap_t *)CFG_IMMR;
sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
/* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
cfg_ports ();
/*
* Configure SIUMCR to enable PCMCIA port B
* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
*/
sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
/* clear interrupt state, and disable interrupts */
pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
/*
* Disable interrupts, DMA, and PCMCIA buffers
* (isolate the interface) and assert RESET signal
*/
debug ("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(_slot_) = reg;
udelay(500);
/*
* Make sure there is a card in the slot, then configure the interface.
*/
udelay(10000);
debug ("[%d] %s: PIPR(%p)=0x%x\n",
__LINE__,__FUNCTION__,
&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
printf (" No Card found\n");
return (1);
}
/*
* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
*/
mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
pipr = pcmp->pcmc_pipr;
debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
pipr,
(reg&PCMCIA_VS1(slot))?"n":"ff",
(reg&PCMCIA_VS2(slot))?"n":"ff");
sreg = immap->im_ioport.iop_pcdat;
if ((pipr & mask) == mask) {
sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */
TPS2211_VCCD1); /* 5V on */
sreg &= ~(TPS2211_VCCD0); /* 3V off */
puts (" 5.0V card found: ");
} else {
sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */
TPS2211_VCCD0); /* 3V on */
sreg &= ~(TPS2211_VCCD1); /* 5V off */
puts (" 3.3V card found: ");
}
debug ("\nPC DAT: %04x -> 3.3V %s 5.0V %s\n",
sreg,
( (sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) ? "on" : "off",
(!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) ? "on" : "off"
);
immap->im_ioport.iop_pcdat = sreg;
/* Wait 500 ms; use this to check for over-current */
for (i=0; i<5000; ++i) {
if ((cp->cp_pbdat & TPS2211_OC) == 0) {
printf (" *** Overcurrent - Safety shutdown ***\n");
immap->im_ioport.iop_pcdat &= ~(TPS2211_VCCD0|TPS2211_VCCD1);
return (1);
}
udelay (100);
}
debug ("Enable PCMCIA buffers and stop RESET\n");
reg = PCMCIA_PGCRX(_slot_);
reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(_slot_) = reg;
udelay(250000); /* some cards need >150 ms to come up :-( */
debug ("# hardware_enable done\n");
return (0);
}
#if defined(CONFIG_CMD_PCMCIA)
int pcmcia_hardware_disable(int slot)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
u_long reg;
debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
immap = (immap_t *)CFG_IMMR;
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
/* Configure PCMCIA General Control Register */
debug ("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(_slot_) = reg;
/* ALl voltages off / Hi-Z */
immap->im_ioport.iop_pcdat |= (TPS2211_VPPD0 | TPS2211_VPPD1 |
TPS2211_VCCD0 | TPS2211_VCCD1 );
udelay(10000);
return (0);
}
#endif /* CFG_CMD_PCMCIA */
int pcmcia_voltage_set(int slot, int vcc, int vpp)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
u_long reg;
ushort sreg;
debug ("voltage_set: "
PCMCIA_BOARD_MSG
" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
immap = (immap_t *)CFG_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
/*
* Disable PCMCIA buffers (isolate the interface)
* and assert RESET signal
*/
debug ("Disable PCMCIA buffers and assert RESET\n");
reg = PCMCIA_PGCRX(_slot_);
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(_slot_) = reg;
udelay(500);
/*
* Configure Port C pins for
* 5 Volts Enable and 3 Volts enable,
* Turn all power pins to Hi-Z
*/
debug ("PCMCIA power OFF\n");
cfg_ports (); /* Enables switch, but all in Hi-Z */
sreg = immap->im_ioport.iop_pcdat;
sreg |= TPS2211_VPPD0 | TPS2211_VPPD1; /* VAVPP always Hi-Z */
switch(vcc) {
case 0: break; /* Switch off */
case 33: sreg |= TPS2211_VCCD0; /* Switch on 3.3V */
sreg &= ~TPS2211_VCCD1;
break;
case 50: sreg &= ~TPS2211_VCCD0; /* Switch on 5.0V */
sreg |= TPS2211_VCCD1;
break;
default: goto done;
}
/* Checking supported voltages */
debug ("PIPR: 0x%x --> %s\n",
pcmp->pcmc_pipr,
(pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
immap->im_ioport.iop_pcdat = sreg;
#ifdef DEBUG
{
char *s;
if ((sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) {
s = "at 3.3V";
} else if (!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) {
s = "at 5.0V";
} else {
s = "down";
}
printf ("PCMCIA powered %s\n", s);
}
#endif
done:
debug ("Enable PCMCIA buffers and stop RESET\n");
reg = PCMCIA_PGCRX(_slot_);
reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(_slot_) = reg;
udelay(500);
debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
slot+'A');
return (0);
}
#endif /* CONFIG_PCMCIA */
|
