ia64/linux-2.6.18-xen.hg

view arch/m68k/sun3x/time.c @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * linux/arch/m68k/sun3x/time.c
3 *
4 * Sun3x-specific time handling
5 */
7 #include <linux/types.h>
8 #include <linux/kd.h>
9 #include <linux/init.h>
10 #include <linux/sched.h>
11 #include <linux/kernel_stat.h>
12 #include <linux/interrupt.h>
13 #include <linux/rtc.h>
14 #include <linux/bcd.h>
16 #include <asm/irq.h>
17 #include <asm/io.h>
18 #include <asm/system.h>
19 #include <asm/traps.h>
20 #include <asm/sun3x.h>
21 #include <asm/sun3ints.h>
22 #include <asm/rtc.h>
24 #include "time.h"
26 #define M_CONTROL 0xf8
27 #define M_SEC 0xf9
28 #define M_MIN 0xfa
29 #define M_HOUR 0xfb
30 #define M_DAY 0xfc
31 #define M_DATE 0xfd
32 #define M_MONTH 0xfe
33 #define M_YEAR 0xff
35 #define C_WRITE 0x80
36 #define C_READ 0x40
37 #define C_SIGN 0x20
38 #define C_CALIB 0x1f
40 int sun3x_hwclk(int set, struct rtc_time *t)
41 {
42 volatile struct mostek_dt *h =
43 (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL);
44 unsigned long flags;
46 local_irq_save(flags);
48 if(set) {
49 h->csr |= C_WRITE;
50 h->sec = BIN2BCD(t->tm_sec);
51 h->min = BIN2BCD(t->tm_min);
52 h->hour = BIN2BCD(t->tm_hour);
53 h->wday = BIN2BCD(t->tm_wday);
54 h->mday = BIN2BCD(t->tm_mday);
55 h->month = BIN2BCD(t->tm_mon);
56 h->year = BIN2BCD(t->tm_year);
57 h->csr &= ~C_WRITE;
58 } else {
59 h->csr |= C_READ;
60 t->tm_sec = BCD2BIN(h->sec);
61 t->tm_min = BCD2BIN(h->min);
62 t->tm_hour = BCD2BIN(h->hour);
63 t->tm_wday = BCD2BIN(h->wday);
64 t->tm_mday = BCD2BIN(h->mday);
65 t->tm_mon = BCD2BIN(h->month);
66 t->tm_year = BCD2BIN(h->year);
67 h->csr &= ~C_READ;
68 }
70 local_irq_restore(flags);
72 return 0;
73 }
74 /* Not much we can do here */
75 unsigned long sun3x_gettimeoffset (void)
76 {
77 return 0L;
78 }
80 #if 0
81 static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs)
82 {
83 void (*vector)(int, void *, struct pt_regs *) = dev_id;
85 /* Clear the pending interrupt - pulse the enable line low */
86 disable_irq(5);
87 enable_irq(5);
89 vector(irq, NULL, regs);
90 }
91 #endif
93 void __init sun3x_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *))
94 {
96 sun3_disable_interrupts();
99 /* Pulse enable low to get the clock started */
100 sun3_disable_irq(5);
101 sun3_enable_irq(5);
102 sun3_enable_interrupts();
103 }