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Wolfgang Denk9d407992006-07-10 23:07:28 +02001#include <common.h>
2#include <mpc8xx.h>
3#include <pcmcia.h>
4
5#undef CONFIG_PCMCIA
6
Jon Loeligerc508a4c2007-07-09 18:31:28 -05007#if defined(CONFIG_CMD_PCMCIA)
Wolfgang Denk9d407992006-07-10 23:07:28 +02008#define CONFIG_PCMCIA
9#endif
10
Jon Loeligerc508a4c2007-07-09 18:31:28 -050011#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
Wolfgang Denk9d407992006-07-10 23:07:28 +020012#define CONFIG_PCMCIA
13#endif
14
15#ifdef CONFIG_PCMCIA
16
17#define PCMCIA_BOARD_MSG "KUP"
18
19#define KUP4K_PCMCIA_B_3V3 (0x00020000)
20
21int pcmcia_hardware_enable(int slot)
22{
23 volatile immap_t *immap;
24 volatile cpm8xx_t *cp;
25 volatile pcmconf8xx_t *pcmp;
26 volatile sysconf8xx_t *sysp;
27 uint reg, mask;
28
29 debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
30
31 udelay(10000);
32
33 immap = (immap_t *)CFG_IMMR;
34 sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
35 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
36 cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
37
38 /*
39 * Configure SIUMCR to enable PCMCIA port B
40 * (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
41 */
42 sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
43
44 /* clear interrupt state, and disable interrupts */
45 pcmp->pcmc_pscr = PCMCIA_MASK(slot);
46 pcmp->pcmc_per &= ~PCMCIA_MASK(slot);
47
48 /*
49 * Disable interrupts, DMA, and PCMCIA buffers
50 * (isolate the interface) and assert RESET signal
51 */
52 debug ("Disable PCMCIA buffers and assert RESET\n");
53 reg = 0;
54 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
55 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
56 PCMCIA_PGCRX(slot) = reg;
57 udelay(2500);
58
59 /*
60 * Configure Port B pins for
61 * 3 Volts enable
62 */
63 if (slot) { /* Slot A is built-in */
64 cp->cp_pbdir |= KUP4K_PCMCIA_B_3V3;
65 cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
66 /* remove all power */
67 cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3; /* active low */
68 }
69 /*
70 * Make sure there is a card in the slot, then configure the interface.
71 */
72 udelay(10000);
73 debug ("[%d] %s: PIPR(%p)=0x%x\n",
74 __LINE__,__FUNCTION__,
75 &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
76 if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
77 printf (" No Card found\n");
78 return (1);
79 }
80
81 /*
82 * Power On.
83 */
84 printf("%s Slot %c:", slot ? "" : "\n", 'A' + slot);
85 mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
86 reg = pcmp->pcmc_pipr;
87 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
88 reg,
89 (reg&PCMCIA_VS1(slot))?"n":"ff",
90 (reg&PCMCIA_VS2(slot))?"n":"ff");
91 if ((reg & mask) == mask) {
92 puts (" 5.0V card found: NOT SUPPORTED !!!\n");
93 } else {
94 if(slot)
95 cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
96 puts (" 3.3V card found: ");
97 }
98#if 0
99 /* VCC switch error flag, PCMCIA slot INPACK_ pin */
100 cp->cp_pbdir &= ~(0x0020 | 0x0010);
101 cp->cp_pbpar &= ~(0x0020 | 0x0010);
102 udelay(500000);
103#endif
104 debug ("Enable PCMCIA buffers and stop RESET\n");
105 reg = PCMCIA_PGCRX(slot);
106 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
107 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
108 PCMCIA_PGCRX(slot) = reg;
109
110 udelay(250000); /* some cards need >150 ms to come up :-( */
111
112 debug ("# hardware_enable done\n");
113
114 return (0);
115}
116
117
Jon Loeligerc508a4c2007-07-09 18:31:28 -0500118#if defined(CONFIG_CMD_PCMCIA)
Wolfgang Denk9d407992006-07-10 23:07:28 +0200119int pcmcia_hardware_disable(int slot)
120{
121 volatile immap_t *immap;
122 volatile cpm8xx_t *cp;
123 volatile pcmconf8xx_t *pcmp;
124 u_long reg;
125
126 debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
127
128 immap = (immap_t *)CFG_IMMR;
129 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
130 cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
131
132 /* remove all power */
133 if (slot)
134 cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3;
135
136 /* Configure PCMCIA General Control Register */
137 debug ("Disable PCMCIA buffers and assert RESET\n");
138 reg = 0;
139 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
140 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
141 PCMCIA_PGCRX(slot) = reg;
142
143 udelay(10000);
144
145 return (0);
146}
Jon Loeligerd39b5742007-07-10 10:48:22 -0500147#endif
Wolfgang Denk9d407992006-07-10 23:07:28 +0200148
149
150int pcmcia_voltage_set(int slot, int vcc, int vpp)
151{
152 volatile immap_t *immap;
153 volatile cpm8xx_t *cp;
154 volatile pcmconf8xx_t *pcmp;
155 u_long reg;
156
157 debug ("voltage_set: " \
158 PCMCIA_BOARD_MSG \
159 " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
160 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
161
162 if (!slot) /* Slot A is not configurable */
163 return 0;
164
165 immap = (immap_t *)CFG_IMMR;
166 pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
167 cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
168
169 /*
170 * Disable PCMCIA buffers (isolate the interface)
171 * and assert RESET signal
172 */
173 debug ("Disable PCMCIA buffers and assert RESET\n");
174 reg = PCMCIA_PGCRX(slot);
175 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
176 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
177 PCMCIA_PGCRX(slot) = reg;
178 udelay(500);
179
180 debug ("PCMCIA power OFF\n");
181 /*
182 * Configure Port B pins for
183 * 3 Volts enable
184 */
185 cp->cp_pbdir |= KUP4K_PCMCIA_B_3V3;
186 cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3;
187 /* remove all power */
188 cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3; /* active low */
189
190 switch(vcc) {
191 case 0: break;
192 case 33:
193 cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3;
194 debug ("PCMCIA powered at 3.3V\n");
195 break;
196 case 50:
197 debug ("PCMCIA: 5Volt vcc not supported\n");
198 break;
199 default:
200 puts("PCMCIA: vcc not supported");
201 break;
202 }
203 udelay(10000);
204 /* Checking supported voltages */
205
206 debug ("PIPR: 0x%x --> %s\n",
207 pcmp->pcmc_pipr,
208 (pcmp->pcmc_pipr & (0x80000000 >> (slot << 4)))
209 ? "only 5 V --> NOT SUPPORTED"
210 : "can do 3.3V");
211
212
213 debug ("Enable PCMCIA buffers and stop RESET\n");
214 reg = PCMCIA_PGCRX(slot);
215 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
216 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
217 PCMCIA_PGCRX(slot) = reg;
218 udelay(500);
219
220 debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
221 slot+'A');
222 return (0);
223}
224
225#endif /* CONFIG_PCMCIA */