ia64/linux-2.6.18-xen.hg

view arch/mips/sgi-ip32/ip32-setup.c @ 912:dd42cdb0ab89

[IA64] Build blktap2 driver by default in x86 builds.

add CONFIG_XEN_BLKDEV_TAP2=y to buildconfigs/linux-defconfig_xen_ia64.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Mon Jun 29 12:09:16 2009 +0900 (2009-06-29)
parents 831230e53067
children
line source
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 * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
11 */
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>
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>
31 extern void ip32_be_init(void);
32 extern void crime_init(void);
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 }
49 static inline void str2eaddr(unsigned char *ea, unsigned char *str)
50 {
51 int i;
53 for (i = 0; i < 6; i++) {
54 unsigned char num;
56 if(*str == ':')
57 str++;
58 num = str2hexnum(*str++) << 4;
59 num |= (str2hexnum(*str++));
60 ea[i] = num;
61 }
62 }
63 #endif
65 #ifdef CONFIG_SERIAL_8250
66 #include <linux/tty.h>
67 #include <linux/serial.h>
68 #include <linux/serial_core.h>
69 #endif /* CONFIG_SERIAL_8250 */
71 /* An arbitrary time; this can be decreased if reliability looks good */
72 #define WAIT_MS 10
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 }
84 void __init plat_timer_setup(struct irqaction *irq)
85 {
86 irq->handler = no_action;
87 setup_irq(IP32_R4K_TIMER_IRQ, irq);
88 }
90 void __init plat_mem_setup(void)
91 {
92 board_be_init = ip32_be_init;
94 rtc_mips_get_time = mc146818_get_cmos_time;
95 rtc_mips_set_mmss = mc146818_set_rtc_mmss;
97 board_time_init = ip32_time_init;
99 #ifdef CONFIG_SERIAL_8250
100 {
101 static struct uart_port o2_serial[2];
103 memset(o2_serial, 0, sizeof(o2_serial));
104 o2_serial[0].type = PORT_16550A;
105 o2_serial[0].line = 0;
106 o2_serial[0].irq = MACEISA_SERIAL1_IRQ;
107 o2_serial[0].flags = UPF_SKIP_TEST;
108 o2_serial[0].uartclk = 1843200;
109 o2_serial[0].iotype = UPIO_MEM;
110 o2_serial[0].membase = (char *)&mace->isa.serial1;
111 o2_serial[0].fifosize = 14;
112 /* How much to shift register offset by. Each UART register
113 * is replicated over 256 byte space */
114 o2_serial[0].regshift = 8;
115 o2_serial[1].type = PORT_16550A;
116 o2_serial[1].line = 1;
117 o2_serial[1].irq = MACEISA_SERIAL2_IRQ;
118 o2_serial[1].flags = UPF_SKIP_TEST;
119 o2_serial[1].uartclk = 1843200;
120 o2_serial[1].iotype = UPIO_MEM;
121 o2_serial[1].membase = (char *)&mace->isa.serial2;
122 o2_serial[1].fifosize = 14;
123 o2_serial[1].regshift = 8;
125 early_serial_setup(&o2_serial[0]);
126 early_serial_setup(&o2_serial[1]);
127 }
128 #endif
129 #ifdef CONFIG_SGI_O2MACE_ETH
130 {
131 char *mac = ArcGetEnvironmentVariable("eaddr");
132 str2eaddr(o2meth_eaddr, mac);
133 }
134 #endif
136 #if defined(CONFIG_SERIAL_CORE_CONSOLE)
137 {
138 char* con = ArcGetEnvironmentVariable("console");
139 if (con && *con == 'd') {
140 static char options[8];
141 char *baud = ArcGetEnvironmentVariable("dbaud");
142 if (baud)
143 strcpy(options, baud);
144 add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0,
145 baud ? options : NULL);
146 }
147 }
148 #endif
149 }