blob: 132a68806d89e39be2a5269faadcbf8f5f874354 [file] [log] [blame]
Wolfgang Denk9d407992006-07-10 23:07:28 +02001#include <common.h>
2#include <mpc8xx.h>
3#include <pcmcia.h>
4
5#include "csr.h"
6
7#undef CONFIG_PCMCIA
8
9#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
10#define CONFIG_PCMCIA
11#endif
12
13#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
14#define CONFIG_PCMCIA
15#endif
16
17#ifdef CONFIG_PCMCIA
18
19/* A lot of this has been taken from the RPX code in this file it works from me.
20 I have added the voltage selection for the MBX board. */
21
22/* MBX voltage bit in control register #2 */
23#define CR2_VPP12 ((uchar)0x10)
24#define CR2_VPPVDD ((uchar)0x20)
25#define CR2_VDD5 ((uchar)0x40)
26#define CR2_VDD3 ((uchar)0x80)
27
28#define PCMCIA_BOARD_MSG "MBX860"
29
30int pcmcia_voltage_set (int slot, int vcc, int vpp)
31{
32 uchar reg = 0;
33
34 debug ("voltage_set: PCMCIA_BOARD_MSG Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
35 'A' + slot, vcc / 10, vcc % 10, vpp / 10, vcc % 10);
36
37 switch (vcc) {
38 case 0:
39 break;
40 case 33:
41 reg |= CR2_VDD3;
42 break;
43 case 50:
44 reg |= CR2_VDD5;
45 break;
46 default:
47 return 1;
48 }
49
50 switch (vpp) {
51 case 0:
52 break;
53 case 33:
54 case 50:
55 if (vcc == vpp) {
56 reg |= CR2_VPPVDD;
57 } else {
58 return 1;
59 }
60 break;
61 case 120:
62 reg |= CR2_VPP12;
63 break;
64 default:
65 return 1;
66 }
67
68 /* first, turn off all power */
69 MBX_CSR2 &= ~(CR2_VDDSEL | CR2_VPPSEL);
70
71 /* enable new powersettings */
72 MBX_CSR2 |= reg;
73 debug ("MBX_CSR2 read = 0x%02x\n", MBX_CSR2);
74
75 return (0);
76}
77
78int pcmcia_hardware_enable (int slot)
79{
80 volatile immap_t *immap;
81 volatile cpm8xx_t *cp;
82 volatile pcmconf8xx_t *pcmp;
83 volatile sysconf8xx_t *sysp;
84 uint reg, mask;
85
86 debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n",
87 'A' + slot);
88
89 udelay (10000);
90
91 immap = (immap_t *) CFG_IMMR;
92 sysp = (sysconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_siu_conf));
93 pcmp = (pcmconf8xx_t *) (&(((immap_t *) CFG_IMMR)->im_pcmcia));
94 cp = (cpm8xx_t *) (&(((immap_t *) CFG_IMMR)->im_cpm));
95
96 /* clear interrupt state, and disable interrupts */
97 pcmp->pcmc_pscr = PCMCIA_MASK (_slot_);
98 pcmp->pcmc_per &= ~PCMCIA_MASK (_slot_);
99
100 /*
101 * Disable interrupts, DMA, and PCMCIA buffers
102 * (isolate the interface) and assert RESET signal
103 */
104 debug ("Disable PCMCIA buffers and assert RESET\n");
105 reg = 0;
106 reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
107 reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
108 PCMCIA_PGCRX (_slot_) = reg;
109 udelay (500);
110
111 /* remove all power */
112 pcmcia_voltage_set (slot, 0, 0);
113 /*
114 * Make sure there is a card in the slot, then configure the interface.
115 */
116 udelay(10000);
117 debug ("[%d] %s: PIPR(%p)=0x%x\n",
118 __LINE__,__FUNCTION__,
119 &(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
120#ifndef CONFIG_HMI10
121 if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
122#else
123 if (pcmp->pcmc_pipr & (0x10000000 >> (slot << 4))) {
124#endif /* CONFIG_HMI10 */
125 printf (" No Card found\n");
126 return (1);
127 }
128
129 /*
130 * Power On.
131 */
132 mask = PCMCIA_VS1 (_slot_) | PCMCIA_VS2 (_slot_);
133 reg = pcmp->pcmc_pipr;
134 debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", reg,
135 (reg & PCMCIA_VS1 (slot)) ? "n" : "ff",
136 (reg & PCMCIA_VS2 (slot)) ? "n" : "ff");
137
138 if ((reg & mask) == mask) {
139 pcmcia_voltage_set (_slot_, 50, 0);
140 printf (" 5.0V card found: ");
141 } else {
142 pcmcia_voltage_set (_slot_, 33, 0);
143 printf (" 3.3V card found: ");
144 }
145
146 debug ("Enable PCMCIA buffers and stop RESET\n");
147 reg = PCMCIA_PGCRX (_slot_);
148 reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
149 reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
150 PCMCIA_PGCRX (_slot_) = reg;
151
152 udelay (250000); /* some cards need >150 ms to come up :-( */
153
154 debug ("# hardware_enable done\n");
155
156 return (0);
157 }
158
159#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
160int pcmcia_hardware_disable (int slot)
161{
162 return 0; /* No hardware to disable */
163}
164#endif /* CFG_CMD_PCMCIA */
165
166#endif /* CONFIG_PCMCIA */