1
2
3
4
5
6
7
8
9
10
11
12
13#include <linux/init.h>
14#include <linux/string.h>
15#include <asm/machvec.h>
16#include <asm/sections.h>
17#include <asm/addrspace.h>
18#include <asm/setup.h>
19#include <asm/io.h>
20#include <asm/irq.h>
21
22#define MV_NAME_SIZE 32
23
24#define for_each_mv(mv) \
25 for ((mv) = (struct sh_machine_vector *)&__machvec_start; \
26 (mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \
27 (mv)++)
28
29static struct sh_machine_vector * __init get_mv_byname(const char *name)
30{
31 struct sh_machine_vector *mv;
32
33 for_each_mv(mv)
34 if (strcasecmp(name, mv->mv_name) == 0)
35 return mv;
36
37 return NULL;
38}
39
40static unsigned int __initdata machvec_selected;
41
42static int __init early_parse_mv(char *from)
43{
44 char mv_name[MV_NAME_SIZE] = "";
45 char *mv_end;
46 char *mv_comma;
47 int mv_len;
48 struct sh_machine_vector *mvp;
49
50 mv_end = strchr(from, ' ');
51 if (mv_end == NULL)
52 mv_end = from + strlen(from);
53
54 mv_comma = strchr(from, ',');
55 mv_len = mv_end - from;
56 if (mv_len > (MV_NAME_SIZE-1))
57 mv_len = MV_NAME_SIZE-1;
58 memcpy(mv_name, from, mv_len);
59 mv_name[mv_len] = '\0';
60 from = mv_end;
61
62 machvec_selected = 1;
63
64
65 if (strcmp(mv_name, "generic") == 0)
66 return 0;
67
68 mvp = get_mv_byname(mv_name);
69 if (unlikely(!mvp)) {
70 printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
71 for_each_mv(mvp)
72 printk("'%s', ", mvp->mv_name);
73 printk("\n\n");
74 panic("Failed to select machvec '%s' -- halting.\n",
75 mv_name);
76 } else
77 sh_mv = *mvp;
78
79 return 0;
80}
81early_param("sh_mv", early_parse_mv);
82
83void __init sh_mv_setup(void)
84{
85
86
87
88
89 if (!machvec_selected) {
90 unsigned long machvec_size;
91
92 machvec_size = ((unsigned long)&__machvec_end -
93 (unsigned long)&__machvec_start);
94
95
96
97
98
99 if (machvec_size % sizeof(struct sh_machine_vector))
100 panic("machvec misaligned, invalid __initmv use?");
101
102
103
104
105
106 if (machvec_size >= sizeof(struct sh_machine_vector))
107 sh_mv = *(struct sh_machine_vector *)&__machvec_start;
108 }
109
110 printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());
111
112
113
114
115
116#define mv_set(elem) do { \
117 if (!sh_mv.mv_##elem) \
118 sh_mv.mv_##elem = generic_##elem; \
119} while (0)
120
121 mv_set(irq_demux);
122 mv_set(mode_pins);
123 mv_set(mem_init);
124}
125