diff options
Diffstat (limited to 'arch/mips/lantiq/prom.c')
-rw-r--r-- | arch/mips/lantiq/prom.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/mips/lantiq/prom.c b/arch/mips/lantiq/prom.c new file mode 100644 index 000000000000..56ba007bf1e5 --- /dev/null +++ b/arch/mips/lantiq/prom.c | |||
@@ -0,0 +1,71 @@ | |||
1 | /* | ||
2 | * This program is free software; you can redistribute it and/or modify it | ||
3 | * under the terms of the GNU General Public License version 2 as published | ||
4 | * by the Free Software Foundation. | ||
5 | * | ||
6 | * Copyright (C) 2010 John Crispin <blogic@openwrt.org> | ||
7 | */ | ||
8 | |||
9 | #include <linux/module.h> | ||
10 | #include <linux/clk.h> | ||
11 | #include <asm/bootinfo.h> | ||
12 | #include <asm/time.h> | ||
13 | |||
14 | #include <lantiq.h> | ||
15 | |||
16 | #include "prom.h" | ||
17 | #include "clk.h" | ||
18 | |||
19 | static struct ltq_soc_info soc_info; | ||
20 | |||
21 | unsigned int ltq_get_cpu_ver(void) | ||
22 | { | ||
23 | return soc_info.rev; | ||
24 | } | ||
25 | EXPORT_SYMBOL(ltq_get_cpu_ver); | ||
26 | |||
27 | unsigned int ltq_get_soc_type(void) | ||
28 | { | ||
29 | return soc_info.type; | ||
30 | } | ||
31 | EXPORT_SYMBOL(ltq_get_soc_type); | ||
32 | |||
33 | const char *get_system_type(void) | ||
34 | { | ||
35 | return soc_info.sys_type; | ||
36 | } | ||
37 | |||
38 | void prom_free_prom_memory(void) | ||
39 | { | ||
40 | } | ||
41 | |||
42 | static void __init prom_init_cmdline(void) | ||
43 | { | ||
44 | int argc = fw_arg0; | ||
45 | char **argv = (char **) KSEG1ADDR(fw_arg1); | ||
46 | int i; | ||
47 | |||
48 | for (i = 0; i < argc; i++) { | ||
49 | char *p = (char *) KSEG1ADDR(argv[i]); | ||
50 | |||
51 | if (p && *p) { | ||
52 | strlcat(arcs_cmdline, p, sizeof(arcs_cmdline)); | ||
53 | strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline)); | ||
54 | } | ||
55 | } | ||
56 | } | ||
57 | |||
58 | void __init prom_init(void) | ||
59 | { | ||
60 | struct clk *clk; | ||
61 | |||
62 | ltq_soc_detect(&soc_info); | ||
63 | clk_init(); | ||
64 | clk = clk_get(0, "cpu"); | ||
65 | snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d", | ||
66 | soc_info.name, soc_info.rev); | ||
67 | clk_put(clk); | ||
68 | soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0'; | ||
69 | pr_info("SoC: %s\n", soc_info.sys_type); | ||
70 | prom_init_cmdline(); | ||
71 | } | ||