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
|
/*
* arch/sh/kernel/machvec.c
*
* The SuperH machine vector setup handlers, yanked from setup.c
*
* Copyright (C) 1999 Niibe Yutaka
* Copyright (C) 2002 - 2007 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/string.h>
#include <asm/machvec.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/io.h>
#include <asm/irq.h>
#define MV_NAME_SIZE 32
#define for_each_mv(mv) \
for ((mv) = (struct sh_machine_vector *)&__machvec_start; \
(mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \
(mv)++)
static struct sh_machine_vector * __init get_mv_byname(const char *name)
{
struct sh_machine_vector *mv;
for_each_mv(mv)
if (strcasecmp(name, mv->mv_name) == 0)
return mv;
return NULL;
}
static unsigned int __initdata machvec_selected;
static int __init early_parse_mv(char *from)
{
char mv_name[MV_NAME_SIZE] = "";
char *mv_end;
char *mv_comma;
int mv_len;
struct sh_machine_vector *mvp;
mv_end = strchr(from, ' ');
if (mv_end == NULL)
mv_end = from + strlen(from);
mv_comma = strchr(from, ',');
mv_len = mv_end - from;
if (mv_len > (MV_NAME_SIZE-1))
mv_len = MV_NAME_SIZE-1;
memcpy(mv_name, from, mv_len);
mv_name[mv_len] = '\0';
from = mv_end;
machvec_selected = 1;
/* Boot with the generic vector */
if (strcmp(mv_name, "generic") == 0)
return 0;
mvp = get_mv_byname(mv_name);
if (unlikely(!mvp)) {
printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
for_each_mv(mvp)
printk("'%s', ", mvp->mv_name);
printk("\n\n");
panic("Failed to select machvec '%s' -- halting.\n",
mv_name);
} else
sh_mv = *mvp;
return 0;
}
early_param("sh_mv", early_parse_mv);
void __init sh_mv_setup(void)
{
/*
* Only overload the machvec if one hasn't been selected on
* the command line with sh_mv=
*/
if (!machvec_selected) {
unsigned long machvec_size;
machvec_size = ((unsigned long)&__machvec_end -
(unsigned long)&__machvec_start);
/*
* Sanity check for machvec section alignment. Ensure
* __initmv hasn't been misused.
*/
if (machvec_size % sizeof(struct sh_machine_vector))
panic("machvec misaligned, invalid __initmv use?");
/*
* If the machvec hasn't been preselected, use the first
* vector (usually the only one) from .machvec.init.
*/
if (machvec_size >= sizeof(struct sh_machine_vector))
sh_mv = *(struct sh_machine_vector *)&__machvec_start;
}
printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());
/*
* Manually walk the vec, fill in anything that the board hasn't yet
* by hand, wrapping to the generic implementation.
*/
#define mv_set(elem) do { \
if (!sh_mv.mv_##elem) \
sh_mv.mv_##elem = generic_##elem; \
} while (0)
mv_set(inb); mv_set(inw); mv_set(inl);
mv_set(outb); mv_set(outw); mv_set(outl);
mv_set(inb_p); mv_set(inw_p); mv_set(inl_p);
mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
mv_set(insb); mv_set(insw); mv_set(insl);
mv_set(outsb); mv_set(outsw); mv_set(outsl);
mv_set(ioport_map);
mv_set(ioport_unmap);
mv_set(irq_demux);
if (!sh_mv.mv_nr_irqs)
sh_mv.mv_nr_irqs = NR_IRQS;
}
|
