Commit | Line | Data |
---|---|---|
42d226c7 ST |
1 | /* |
2 | * Based on Ocelot Linux port, which is | |
3 | * Copyright 2001 MontaVista Software Inc. | |
4 | * Author: jsun@mvista.com or jsun@junsun.net | |
5 | * | |
6 | * Copyright 2003 ICT CAS | |
7 | * Author: Michael Guo <guoyi@ict.ac.cn> | |
8 | * | |
9 | * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology | |
10 | * Author: Fuxin Zhang, zhangfx@lemote.com | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | */ | |
17 | #include <linux/init.h> | |
42d226c7 | 18 | #include <linux/bootmem.h> |
42d226c7 ST |
19 | #include <asm/bootinfo.h> |
20 | ||
21 | extern unsigned long bus_clock; | |
348c913f | 22 | extern unsigned long cpu_clock_freq; |
42d226c7 ST |
23 | extern unsigned int memsize, highmemsize; |
24 | extern int putDebugChar(unsigned char byte); | |
25 | ||
26 | static int argc; | |
27 | /* pmon passes arguments in 32bit pointers */ | |
28 | static int *arg; | |
29 | static int *env; | |
30 | ||
31 | const char *get_system_type(void) | |
32 | { | |
33 | return "lemote-fulong"; | |
34 | } | |
35 | ||
36 | void __init prom_init_cmdline(void) | |
37 | { | |
38 | int i; | |
39 | long l; | |
40 | ||
41 | /* arg[0] is "g", the rest is boot parameters */ | |
42 | arcs_cmdline[0] = '\0'; | |
43 | for (i = 1; i < argc; i++) { | |
44 | l = (long)arg[i]; | |
45 | if (strlen(arcs_cmdline) + strlen(((char *)l) + 1) | |
46 | >= sizeof(arcs_cmdline)) | |
47 | break; | |
48 | strcat(arcs_cmdline, ((char *)l)); | |
49 | strcat(arcs_cmdline, " "); | |
50 | } | |
51 | } | |
52 | ||
53 | void __init prom_init(void) | |
54 | { | |
55 | long l; | |
56 | argc = fw_arg0; | |
57 | arg = (int *)fw_arg1; | |
58 | env = (int *)fw_arg2; | |
59 | ||
42d226c7 ST |
60 | prom_init_cmdline(); |
61 | ||
62 | if ((strstr(arcs_cmdline, "console=")) == NULL) | |
63 | strcat(arcs_cmdline, " console=ttyS0,115200"); | |
64 | if ((strstr(arcs_cmdline, "root=")) == NULL) | |
65 | strcat(arcs_cmdline, " root=/dev/hda1"); | |
66 | ||
67 | #define parse_even_earlier(res, option, p) \ | |
68 | do { \ | |
69 | if (strncmp(option, (char *)p, strlen(option)) == 0) \ | |
70 | res = simple_strtol((char *)p + strlen(option"="), \ | |
71 | NULL, 10); \ | |
72 | } while (0) | |
73 | ||
74 | l = (long)*env; | |
75 | while (l != 0) { | |
76 | parse_even_earlier(bus_clock, "busclock", l); | |
348c913f | 77 | parse_even_earlier(cpu_clock_freq, "cpuclock", l); |
42d226c7 ST |
78 | parse_even_earlier(memsize, "memsize", l); |
79 | parse_even_earlier(highmemsize, "highmemsize", l); | |
80 | env++; | |
81 | l = (long)*env; | |
82 | } | |
83 | if (memsize == 0) | |
84 | memsize = 256; | |
85 | ||
86 | pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n", | |
348c913f | 87 | bus_clock, cpu_clock_freq, memsize, highmemsize); |
42d226c7 ST |
88 | } |
89 | ||
90 | void __init prom_free_prom_memory(void) | |
91 | { | |
92 | } | |
93 | ||
94 | void prom_putchar(char c) | |
95 | { | |
96 | putDebugChar(c); | |
97 | } |