Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
| 10 | */ |
| 11 | #include <linux/config.h> |
| 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 | |
| 65 | #ifdef CONFIG_SERIAL_8250 |
| 66 | #include <linux/tty.h> |
| 67 | #include <linux/serial.h> |
| 68 | #include <linux/serial_core.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | #endif /* CONFIG_SERIAL_8250 */ |
| 70 | |
| 71 | /* An arbitrary time; this can be decreased if reliability looks good */ |
| 72 | #define WAIT_MS 10 |
| 73 | |
| 74 | void __init ip32_time_init(void) |
| 75 | { |
| 76 | printk(KERN_INFO "Calibrating system timer... "); |
| 77 | write_c0_count(0); |
| 78 | crime->timer = 0; |
| 79 | while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ; |
| 80 | mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS; |
| 81 | printk("%d MHz CPU detected\n", mips_hpt_frequency * 2 / 1000000); |
| 82 | } |
| 83 | |
| 84 | void __init ip32_timer_setup(struct irqaction *irq) |
| 85 | { |
| 86 | irq->handler = no_action; |
| 87 | setup_irq(IP32_R4K_TIMER_IRQ, irq); |
| 88 | } |
| 89 | |
Ralf Baechle | c83cfc9 | 2005-06-21 13:56:30 +0000 | [diff] [blame] | 90 | void __init plat_setup(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | { |
| 92 | board_be_init = ip32_be_init; |
| 93 | |
| 94 | rtc_get_time = mc146818_get_cmos_time; |
| 95 | rtc_set_mmss = mc146818_set_rtc_mmss; |
| 96 | |
| 97 | board_time_init = ip32_time_init; |
| 98 | board_timer_setup = ip32_timer_setup; |
| 99 | |
| 100 | #ifdef CONFIG_SERIAL_8250 |
| 101 | { |
| 102 | static struct uart_port o2_serial[2]; |
| 103 | |
| 104 | memset(o2_serial, 0, sizeof(o2_serial)); |
| 105 | o2_serial[0].type = PORT_16550A; |
| 106 | o2_serial[0].line = 0; |
| 107 | o2_serial[0].irq = MACEISA_SERIAL1_IRQ; |
Russell King | 59a675b | 2006-02-05 10:52:29 +0000 | [diff] [blame] | 108 | o2_serial[0].flags = UPF_SKIP_TEST; |
| 109 | o2_serial[0].uartclk = 1843200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | o2_serial[0].iotype = UPIO_MEM; |
| 111 | o2_serial[0].membase = (char *)&mace->isa.serial1; |
| 112 | o2_serial[0].fifosize = 14; |
| 113 | /* How much to shift register offset by. Each UART register |
| 114 | * is replicated over 256 byte space */ |
| 115 | o2_serial[0].regshift = 8; |
| 116 | o2_serial[1].type = PORT_16550A; |
| 117 | o2_serial[1].line = 1; |
| 118 | o2_serial[1].irq = MACEISA_SERIAL2_IRQ; |
Russell King | 59a675b | 2006-02-05 10:52:29 +0000 | [diff] [blame] | 119 | o2_serial[1].flags = UPF_SKIP_TEST; |
| 120 | o2_serial[1].uartclk = 1843200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | o2_serial[1].iotype = UPIO_MEM; |
| 122 | o2_serial[1].membase = (char *)&mace->isa.serial2; |
| 123 | o2_serial[1].fifosize = 14; |
| 124 | o2_serial[1].regshift = 8; |
| 125 | |
| 126 | early_serial_setup(&o2_serial[0]); |
| 127 | early_serial_setup(&o2_serial[1]); |
| 128 | } |
| 129 | #endif |
| 130 | #ifdef CONFIG_SGI_O2MACE_ETH |
| 131 | { |
| 132 | char *mac = ArcGetEnvironmentVariable("eaddr"); |
| 133 | str2eaddr(o2meth_eaddr, mac); |
| 134 | } |
| 135 | #endif |
| 136 | |
| 137 | #if defined(CONFIG_SERIAL_CORE_CONSOLE) |
| 138 | { |
| 139 | char* con = ArcGetEnvironmentVariable("console"); |
| 140 | if (con && *con == 'd') { |
| 141 | static char options[8]; |
| 142 | char *baud = ArcGetEnvironmentVariable("dbaud"); |
| 143 | if (baud) |
| 144 | strcpy(options, baud); |
| 145 | add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0, |
| 146 | baud ? options : NULL); |
| 147 | } |
| 148 | } |
| 149 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |