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
|
/* -------------------------------------------------------------------- */
/* TQM8xxL Boards by TQ Components */
/* SC8xx Boards by SinoVee Microsystems */
/* -------------------------------------------------------------------- */
#include <common.h>
#include <asm/io.h>
#ifdef CONFIG_8xx
#include <mpc8xx.h>
#endif
#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
#if defined(CONFIG_PCMCIA) \
&& defined(CONFIG_TQM8xxL)
#if defined(CONFIG_TQM8xxL)
#define PCMCIA_BOARD_MSG "TQM8xxL"
#endif
static inline void power_config(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
/*
* Configure Port C pins for
* 5 Volts Enable and 3 Volts enable
*/
clrbits_be16(&immap->im_ioport.iop_pcpar, 0x0002 | 0x0004);
clrbits_be16(&immap->im_ioport.iop_pcso, 0x0002 | 0x0004);
}
static inline void power_off(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
clrbits_be16(&immap->im_ioport.iop_pcdat, 0x0002 | 0x0004);
}
static inline void power_on_5_0(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
setbits_be16(&immap->im_ioport.iop_pcdat, 0x0004);
setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004);
}
static inline void power_on_3_3(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
setbits_be16(&immap->im_ioport.iop_pcdat, 0x0002);
setbits_be16(&immap->im_ioport.iop_pcdir, 0x0002 | 0x0004);
}
/*
* Function to retrieve the PIPR register, used for debuging purposes.
*/
static inline uint32_t debug_get_pipr(void)
{
uint32_t pipr = 0;
#ifdef DEBUG
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
pipr = in_be32(&immap->im_pcmcia.pcmc_pipr);
#endif
return pipr;
}
static inline int check_card_is_absent(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
uint32_t pipr = in_be32(&immap->im_pcmcia.pcmc_pipr);
return pipr & (0x18000000 >> (slot << 4));
}
#define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
int pcmcia_hardware_enable(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
uint reg, mask;
debug("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
udelay(10000);
/*
* Configure SIUMCR to enable PCMCIA port B
* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
*/
/* Set DBGC to 00 */
clrbits_be32(&immap->im_siu_conf.sc_siumcr, SIUMCR_DBGC11);
/* Clear interrupt state, and disable interrupts */
out_be32(&immap->im_pcmcia.pcmc_pscr, PCMCIA_MASK(slot));
clrbits_be32(&immap->im_pcmcia.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 |= NSCU_GCRX_CXOE;
PCMCIA_PGCRX(slot) = reg;
udelay(500);
power_config(slot);
power_off(slot);
/*
* Make sure there is a card in the slot, then configure the interface.
*/
udelay(10000);
reg = debug_get_pipr();
debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__, __FUNCTION__,
&immap->im_pcmcia.pcmc_pipr, reg);
if (check_card_is_absent(slot)) {
printf (" No Card found\n");
return (1);
}
/*
* Power On.
*/
mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
reg = in_be32(&immap->im_pcmcia.pcmc_pipr);
debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
reg,
(reg & PCMCIA_VS1(slot)) ? "n" : "ff",
(reg & PCMCIA_VS2(slot)) ? "n" : "ff");
if ((reg & mask) == mask) {
power_on_5_0(slot);
puts (" 5.0V card found: ");
} else {
power_on_3_3(slot);
puts (" 3.3V card found: ");
}
#if 0
/* VCC switch error flag, PCMCIA slot INPACK_ pin */
cp->cp_pbdir &= ~(0x0020 | 0x0010);
cp->cp_pbpar &= ~(0x0020 | 0x0010);
udelay(500000);
#endif
udelay(1000);
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 */
reg &= ~NSCU_GCRX_CXOE;
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)
{
u_long reg;
debug("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
/* remove all power */
power_off(slot);
debug("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= NSCU_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(slot) = reg;
udelay(10000);
return (0);
}
#endif
int pcmcia_voltage_set(int slot, int vcc, int vpp)
{
u_long reg;
uint32_t pipr = 0;
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);
/*
* 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 */
reg |= NSCU_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(slot) = reg;
udelay(500);
debug("PCMCIA power OFF\n");
power_config(slot);
power_off(slot);
switch(vcc) {
case 0: break;
case 33: power_on_3_3(slot); break;
case 50: power_on_5_0(slot); break;
default: goto done;
}
/* Checking supported voltages */
pipr = debug_get_pipr();
debug("PIPR: 0x%x --> %s\n", pipr,
(pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
if (vcc)
debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3");
else
debug("PCMCIA powered down\n");
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 */
reg &= ~NSCU_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 && CONFIG_TQM8xxL */
|
