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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 13:32:02 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 13:32:02 -0400
commitb91cba52e9b7b3f1c0037908a192d93a869ca9e5 (patch)
treebbce7f323c8f52b308af5a152673a75b3e445360 /arch/sh/kernel/machvec.c
parent98283bb49c6c8c070ebde9f47489d3e9a83c1323 (diff)
parente509ac4bbc661052dc73a2e8138800ba77d4ecb9 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (68 commits) sh: sh-rtc support for SH7709. sh: Revert __xdiv64_32 size change. sh: Update r7785rp defconfig. sh: Export div symbols for GCC 4.2 and ST GCC. sh: fix race in parallel out-of-tree build sh: Kill off dead mach.c for hp6xx. sh: hd64461.h cleanup and added comments. sh: Update the alignment when 4K stacks are used. sh: Add a .bss.page_aligned section for 4K stacks. sh: Don't let SH-4A clobber SH-4 CFLAGS. sh: Add parport stub for SuperIO ports. sh: Drop -Wa,-dsp for DSP tuning. sh: Update dreamcast defconfig. fb: pvr2fb: A few more __devinit annotations for PCI. fb: pvr2fb: Fix up section mismatch warnings. sh: Select IPR-IRQ for SH7091. sh: Correct __xdiv64_32/div64_32 return value size. sh: Fix timer-tmu build for SH-3. sh: Add cpu and mach links to CLEAN_FILES. sh: Preliminary support for the SH-X3 CPU. ...
Diffstat (limited to 'arch/sh/kernel/machvec.c')
-rw-r--r--arch/sh/kernel/machvec.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
new file mode 100644
index 000000000000..23c5948f0124
--- /dev/null
+++ b/arch/sh/kernel/machvec.c
@@ -0,0 +1,130 @@
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
27static 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, mv->mv_name) == 0)
33 return mv;
34
35 return NULL;
36}
37
38static unsigned int __initdata machvec_selected;
39
40static int __init early_parse_mv(char *from)
41{
42 char mv_name[MV_NAME_SIZE] = "";
43 char *mv_end;
44 char *mv_comma;
45 int mv_len;
46 struct sh_machine_vector *mvp;
47
48 mv_end = strchr(from, ' ');
49 if (mv_end == NULL)
50 mv_end = from + strlen(from);
51
52 mv_comma = strchr(from, ',');
53 mv_len = mv_end - from;
54 if (mv_len > (MV_NAME_SIZE-1))
55 mv_len = MV_NAME_SIZE-1;
56 memcpy(mv_name, from, mv_len);
57 mv_name[mv_len] = '\0';
58 from = mv_end;
59
60 machvec_selected = 1;
61
62 /* Boot with the generic vector */
63 if (strcmp(mv_name, "generic") == 0)
64 return 0;
65
66 mvp = get_mv_byname(mv_name);
67 if (unlikely(!mvp)) {
68 printk("Available vectors:\n\n\t'%s', ", sh_mv.mv_name);
69 for_each_mv(mvp)
70 printk("'%s', ", mvp->mv_name);
71 printk("\n\n");
72 panic("Failed to select machvec '%s' -- halting.\n",
73 mv_name);
74 } else
75 sh_mv = *mvp;
76
77 return 0;
78}
79early_param("sh_mv", early_parse_mv);
80
81void __init sh_mv_setup(void)
82{
83 /*
84 * Only overload the machvec if one hasn't been selected on
85 * the command line with sh_mv=
86 */
87 if (!machvec_selected) {
88 unsigned long machvec_size;
89
90 machvec_size = ((unsigned long)&__machvec_end -
91 (unsigned long)&__machvec_start);
92
93 /*
94 * If the machvec hasn't been preselected, use the first
95 * vector (usually the only one) from .machvec.init.
96 */
97 if (machvec_size >= sizeof(struct sh_machine_vector))
98 sh_mv = *(struct sh_machine_vector *)&__machvec_start;
99 }
100
101 printk(KERN_NOTICE "Booting machvec: %s\n", get_system_type());
102
103 /*
104 * Manually walk the vec, fill in anything that the board hasn't yet
105 * by hand, wrapping to the generic implementation.
106 */
107#define mv_set(elem) do { \
108 if (!sh_mv.mv_##elem) \
109 sh_mv.mv_##elem = generic_##elem; \
110} while (0)
111
112 mv_set(inb); mv_set(inw); mv_set(inl);
113 mv_set(outb); mv_set(outw); mv_set(outl);
114
115 mv_set(inb_p); mv_set(inw_p); mv_set(inl_p);
116 mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
117
118 mv_set(insb); mv_set(insw); mv_set(insl);
119 mv_set(outsb); mv_set(outsw); mv_set(outsl);
120
121 mv_set(readb); mv_set(readw); mv_set(readl);
122 mv_set(writeb); mv_set(writew); mv_set(writel);
123
124 mv_set(ioport_map);
125 mv_set(ioport_unmap);
126 mv_set(irq_demux);
127
128 if (!sh_mv.mv_nr_irqs)
129 sh_mv.mv_nr_irqs = NR_IRQS;
130}