projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | } |