Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * IP32 basic setup | |
3 | * | |
4 | * This file is subject to the terms and conditions of the GNU General Public | |
5 | * License. See the file "COPYING" in the main directory of this archive | |
6 | * for more details. | |
7 | * | |
8 | * Copyright (C) 2000 Harald Koerfgen | |
9 | * Copyright (C) 2002, 2003, 2005 Ilya A. Volynets | |
54d0a216 | 10 | * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> |
1da177e4 | 11 | */ |
1da177e4 LT |
12 | #include <linux/console.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/mc146818rtc.h> | |
16 | #include <linux/param.h> | |
17 | #include <linux/sched.h> | |
18 | ||
19 | #include <asm/bootinfo.h> | |
20 | #include <asm/mc146818-time.h> | |
21 | #include <asm/mipsregs.h> | |
22 | #include <asm/mmu_context.h> | |
23 | #include <asm/sgialib.h> | |
24 | #include <asm/time.h> | |
25 | #include <asm/traps.h> | |
26 | #include <asm/io.h> | |
27 | #include <asm/ip32/crime.h> | |
28 | #include <asm/ip32/mace.h> | |
29 | #include <asm/ip32/ip32_ints.h> | |
30 | ||
31 | extern void ip32_be_init(void); | |
32 | extern void crime_init(void); | |
33 | ||
34 | #ifdef CONFIG_SGI_O2MACE_ETH | |
35 | /* | |
36 | * This is taken care of in here 'cause they say using Arc later on is | |
37 | * problematic | |
38 | */ | |
39 | extern char o2meth_eaddr[8]; | |
40 | static inline unsigned char str2hexnum(unsigned char c) | |
41 | { | |
42 | if (c >= '0' && c <= '9') | |
43 | return c - '0'; | |
44 | if (c >= 'a' && c <= 'f') | |
45 | return c - 'a' + 10; | |
46 | return 0; /* foo */ | |
47 | } | |
48 | ||
49 | static inline void str2eaddr(unsigned char *ea, unsigned char *str) | |
50 | { | |
51 | int i; | |
52 | ||
53 | for (i = 0; i < 6; i++) { | |
54 | unsigned char num; | |
55 | ||
56 | if(*str == ':') | |
57 | str++; | |
58 | num = str2hexnum(*str++) << 4; | |
59 | num |= (str2hexnum(*str++)); | |
60 | ea[i] = num; | |
61 | } | |
62 | } | |
63 | #endif | |
64 | ||
1da177e4 LT |
65 | /* An arbitrary time; this can be decreased if reliability looks good */ |
66 | #define WAIT_MS 10 | |
67 | ||
4b550488 | 68 | void __init plat_time_init(void) |
1da177e4 LT |
69 | { |
70 | printk(KERN_INFO "Calibrating system timer... "); | |
71 | write_c0_count(0); | |
72 | crime->timer = 0; | |
73 | while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ; | |
74 | mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS; | |
75 | printk("%d MHz CPU detected\n", mips_hpt_frequency * 2 / 1000000); | |
76 | } | |
77 | ||
2925aba4 | 78 | void __init plat_mem_setup(void) |
1da177e4 LT |
79 | { |
80 | board_be_init = ip32_be_init; | |
81 | ||
1da177e4 LT |
82 | #ifdef CONFIG_SGI_O2MACE_ETH |
83 | { | |
84 | char *mac = ArcGetEnvironmentVariable("eaddr"); | |
85 | str2eaddr(o2meth_eaddr, mac); | |
86 | } | |
87 | #endif | |
88 | ||
89 | #if defined(CONFIG_SERIAL_CORE_CONSOLE) | |
90 | { | |
91 | char* con = ArcGetEnvironmentVariable("console"); | |
92 | if (con && *con == 'd') { | |
599a8945 | 93 | static char options[8] __initdata; |
1da177e4 LT |
94 | char *baud = ArcGetEnvironmentVariable("dbaud"); |
95 | if (baud) | |
96 | strcpy(options, baud); | |
97 | add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0, | |
98 | baud ? options : NULL); | |
99 | } | |
100 | } | |
101 | #endif | |
1da177e4 | 102 | } |