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
|
/* $Id: cf-enabler.c,v 1.4 2004/02/22 22:44:36 kkojima Exp $
*
* linux/drivers/block/cf-enabler.c
*
* Copyright (C) 1999 Niibe Yutaka
* Copyright (C) 2000 Toshiharu Nozawa
* Copyright (C) 2001 A&D Co., Ltd.
*
* Enable the CF configuration.
*/
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/irq.h>
/*
* You can connect Compact Flash directly to the bus of SuperH.
* This is the enabler for that.
*
* SIM: How generic is this really? It looks pretty board, or at
* least SH sub-type, specific to me.
* I know it doesn't work on the Overdrive!
*/
/*
* 0xB8000000 : Attribute
* 0xB8001000 : Common Memory
* 0xBA000000 : I/O
*/
#if defined(CONFIG_CPU_SH4)
/* SH4 can't access PCMCIA interface through P2 area.
* we must remap it with appropriate attribute bit of the page set.
* this part is based on Greg Banks' hd64465_ss.c implementation - Masahiro Abe */
#if defined(CONFIG_CF_AREA6)
#define slot_no 0
#else
#define slot_no 1
#endif
/* use this pointer to access to directly connected compact flash io area*/
void *cf_io_base;
static int __init allocate_cf_area(void)
{
pgprot_t prot;
unsigned long paddrbase, psize;
/* open I/O area window */
paddrbase = virt_to_phys((void*)CONFIG_CF_BASE_ADDR);
psize = PAGE_SIZE;
prot = PAGE_KERNEL_PCC(slot_no, _PAGE_PCC_IO16);
cf_io_base = p3_ioremap(paddrbase, psize, prot.pgprot);
if (!cf_io_base) {
printk("allocate_cf_area : can't open CF I/O window!\n");
return -ENOMEM;
}
/* printk("p3_ioremap(paddr=0x%08lx, psize=0x%08lx, prot=0x%08lx)=0x%08lx\n",
paddrbase, psize, prot.pgprot, cf_io_base);*/
/* XXX : do we need attribute and common-memory area also? */
return 0;
}
#endif
static int __init cf_init_default(void)
{
/* You must have enabled the card, and set the level interrupt
* before reaching this point. Possibly in boot ROM or boot loader.
*/
#if defined(CONFIG_CPU_SH4)
allocate_cf_area();
#endif
#if defined(CONFIG_SH_UNKNOWN)
/* This should be done in each board's init_xxx_irq. */
make_imask_irq(14);
disable_irq(14);
#endif
return 0;
}
#if defined(CONFIG_SH_SOLUTION_ENGINE)
#include <asm/se.h>
#elif defined(CONFIG_SH_7722_SOLUTION_ENGINE)
#include <asm/se7722.h>
#endif
/*
* SolutionEngine Seriese
*
* about MS770xSE
* 0xB8400000 : Common Memory
* 0xB8500000 : Attribute
* 0xB8600000 : I/O
*
* about MS7722SE
* 0xB0400000 : Common Memory
* 0xB0500000 : Attribute
* 0xB0600000 : I/O
*/
#if defined(CONFIG_SH_SOLUTION_ENGINE) || defined(CONFIG_SH_7722_SOLUTION_ENGINE)
static int __init cf_init_se(void)
{
if ((ctrl_inw(MRSHPC_CSR) & 0x000c) != 0)
return 0; /* Not detected */
if ((ctrl_inw(MRSHPC_CSR) & 0x0080) == 0) {
ctrl_outw(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
} else {
ctrl_outw(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
}
/*
* PC-Card window open
* flag == COMMON/ATTRIBUTE/IO
*/
/* common window open */
ctrl_outw(0x8a84, MRSHPC_MW0CR1);
if((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
/* common mode & bus width 16bit SWAP = 1*/
ctrl_outw(0x0b00, MRSHPC_MW0CR2);
else
/* common mode & bus width 16bit SWAP = 0*/
ctrl_outw(0x0300, MRSHPC_MW0CR2);
/* attribute window open */
ctrl_outw(0x8a85, MRSHPC_MW1CR1);
if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
/* attribute mode & bus width 16bit SWAP = 1*/
ctrl_outw(0x0a00, MRSHPC_MW1CR2);
else
/* attribute mode & bus width 16bit SWAP = 0*/
ctrl_outw(0x0200, MRSHPC_MW1CR2);
/* I/O window open */
ctrl_outw(0x8a86, MRSHPC_IOWCR1);
ctrl_outw(0x0008, MRSHPC_CDCR); /* I/O card mode */
if ((ctrl_inw(MRSHPC_CSR) & 0x4000) != 0)
ctrl_outw(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
else
ctrl_outw(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
ctrl_outw(0x2000, MRSHPC_ICR);
ctrl_outb(0x00, PA_MRSHPC_MW2 + 0x206);
ctrl_outb(0x42, PA_MRSHPC_MW2 + 0x200);
return 0;
}
#else
static int __init cf_init_se(void)
{
return -1;
}
#endif
int __init cf_init(void)
{
if( mach_is_se() || mach_is_7722se() ){
return cf_init_se();
}
return cf_init_default();
}
__initcall (cf_init);
|
