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12#include <linux/init.h>
13#include <linux/types.h>
14#include <linux/console.h>
15#include <linux/string.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/io.h>
19#include <asm/machdep.h>
20#include <asm/natfeat.h>
21
22extern long nf_get_id_phys(unsigned long feature_name);
23
24asm("\n"
25" .global nf_get_id_phys,nf_call\n"
26"nf_get_id_phys:\n"
27" .short 0x7300\n"
28" rts\n"
29"nf_call:\n"
30" .short 0x7301\n"
31" rts\n"
32"1: moveq.l #0,%d0\n"
33" rts\n"
34" .section __ex_table,\"a\"\n"
35" .long nf_get_id_phys,1b\n"
36" .long nf_call,1b\n"
37" .previous");
38EXPORT_SYMBOL_GPL(nf_call);
39
40long nf_get_id(const char *feature_name)
41{
42
43 char name_copy[32];
44 size_t n;
45
46 n = strlcpy(name_copy, feature_name, sizeof(name_copy));
47 if (n >= sizeof(name_copy))
48 return 0;
49
50 return nf_get_id_phys(virt_to_phys(name_copy));
51}
52EXPORT_SYMBOL_GPL(nf_get_id);
53
54void nfprint(const char *fmt, ...)
55{
56 static char buf[256];
57 va_list ap;
58 int n;
59
60 va_start(ap, fmt);
61 n = vsnprintf(buf, 256, fmt, ap);
62 nf_call(nf_get_id("NF_STDERR"), virt_to_phys(buf));
63 va_end(ap);
64}
65
66static void nf_poweroff(void)
67{
68 long id = nf_get_id("NF_SHUTDOWN");
69
70 if (id)
71 nf_call(id);
72}
73
74void __init nf_init(void)
75{
76 unsigned long id, version;
77 char buf[256];
78
79 id = nf_get_id("NF_VERSION");
80 if (!id)
81 return;
82 version = nf_call(id);
83
84 id = nf_get_id("NF_NAME");
85 if (!id)
86 return;
87 nf_call(id, virt_to_phys(buf), 256);
88 buf[255] = 0;
89
90 pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,
91 version & 0xffff);
92
93 mach_power_off = nf_poweroff;
94}
95