Commit | Line | Data |
---|---|---|
9655ad03 PM |
1 | /* |
2 | * arch/sh/kernel/machvec.c | |
3 | * | |
4 | * The SuperH machine vector setup handlers, yanked from setup.c | |
5 | * | |
6 | * Copyright (C) 1999 Niibe Yutaka | |
7 | * Copyright (C) 2002 - 2007 Paul Mundt | |
8 | * | |
9 | * This file is subject to the terms and conditions of the GNU General Public | |
10 | * License. See the file "COPYING" in the main directory of this archive | |
11 | * for more details. | |
12 | */ | |
13 | #include <linux/init.h> | |
14 | #include <linux/string.h> | |
15 | #include <asm/machvec.h> | |
16 | #include <asm/sections.h> | |
17 | #include <asm/io.h> | |
18 | #include <asm/irq.h> | |
19 | ||
20 | #define MV_NAME_SIZE 32 | |
21 | ||
22 | #define for_each_mv(mv) \ | |
23 | for ((mv) = (struct sh_machine_vector *)&__machvec_start; \ | |
24 | (mv) && (unsigned long)(mv) < (unsigned long)&__machvec_end; \ | |
25 | (mv)++) | |
26 | ||
27 | static struct sh_machine_vector * __init get_mv_byname(const char *name) | |
28 | { | |
29 | struct sh_machine_vector *mv; | |
30 | ||
31 | for_each_mv(mv) | |
32 | if (strcasecmp(name, get_system_type()) == 0) | |
33 | return mv; | |
34 | ||
35 | return NULL; | |
36 | } | |
37 | ||
38 | static int __init early_parse_mv(char *from) | |
39 | { | |
40 | char mv_name[MV_NAME_SIZE] = ""; | |
41 | char *mv_end; | |
42 | char *mv_comma; | |
43 | int mv_len; | |
44 | struct sh_machine_vector *mvp; | |
45 | ||
46 | mv_end = strchr(from, ' '); | |
47 | if (mv_end == NULL) | |
48 | mv_end = from + strlen(from); | |
49 | ||
50 | mv_comma = strchr(from, ','); | |
51 | mv_len = mv_end - from; | |
52 | if (mv_len > (MV_NAME_SIZE-1)) | |
53 | mv_len = MV_NAME_SIZE-1; | |
54 | memcpy(mv_name, from, mv_len); | |
55 | mv_name[mv_len] = '\0'; | |
56 | from = mv_end; | |
57 | ||
58 | if (strcmp(sh_mv.mv_name, mv_name) != 0) { | |
59 | mvp = get_mv_byname(mv_name); | |
60 | if (unlikely(!mvp)) { | |
61 | printk("Available vectors:\n\n\t"); | |
62 | for_each_mv(mvp) | |
63 | printk("'%s', ", mvp->mv_name); | |
64 | printk("\n\n"); | |
65 | panic("Failed to select machvec '%s' -- halting.\n", | |
66 | mv_name); | |
67 | } else | |
68 | sh_mv = *mvp; | |
69 | } | |
70 | ||
71 | printk(KERN_NOTICE "Booting machvec: %s\n", sh_mv.mv_name); | |
72 | return 0; | |
73 | } | |
74 | early_param("sh_mv", early_parse_mv); | |
75 | ||
76 | void __init sh_mv_setup(void) | |
77 | { | |
78 | /* | |
79 | * Manually walk the vec, fill in anything that the board hasn't yet | |
80 | * by hand, wrapping to the generic implementation. | |
81 | */ | |
82 | #define mv_set(elem) do { \ | |
83 | if (!sh_mv.mv_##elem) \ | |
84 | sh_mv.mv_##elem = generic_##elem; \ | |
85 | } while (0) | |
86 | ||
87 | mv_set(inb); mv_set(inw); mv_set(inl); | |
88 | mv_set(outb); mv_set(outw); mv_set(outl); | |
89 | ||
90 | mv_set(inb_p); mv_set(inw_p); mv_set(inl_p); | |
91 | mv_set(outb_p); mv_set(outw_p); mv_set(outl_p); | |
92 | ||
93 | mv_set(insb); mv_set(insw); mv_set(insl); | |
94 | mv_set(outsb); mv_set(outsw); mv_set(outsl); | |
95 | ||
96 | mv_set(readb); mv_set(readw); mv_set(readl); | |
97 | mv_set(writeb); mv_set(writew); mv_set(writel); | |
98 | ||
99 | mv_set(ioport_map); | |
100 | mv_set(ioport_unmap); | |
101 | mv_set(irq_demux); | |
102 | ||
103 | if (!sh_mv.mv_nr_irqs) | |
104 | sh_mv.mv_nr_irqs = NR_IRQS; | |
105 | } |