Merge branch 'exec_rm_compat' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg...
[pandora-kernel.git] / arch / powerpc / platforms / chrp / smp.c
1 /*
2  * Smp support for CHRP machines.
3  *
4  * Written by Cort Dougan (cort@cs.nmt.edu) borrowing a great
5  * deal of code from the sparc and intel versions.
6  *
7  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
8  *
9  */
10
11 #include <linux/kernel.h>
12 #include <linux/sched.h>
13 #include <linux/smp.h>
14 #include <linux/interrupt.h>
15 #include <linux/kernel_stat.h>
16 #include <linux/delay.h>
17 #include <linux/init.h>
18 #include <linux/spinlock.h>
19
20 #include <asm/ptrace.h>
21 #include <asm/atomic.h>
22 #include <asm/irq.h>
23 #include <asm/page.h>
24 #include <asm/pgtable.h>
25 #include <asm/sections.h>
26 #include <asm/io.h>
27 #include <asm/prom.h>
28 #include <asm/smp.h>
29 #include <asm/machdep.h>
30 #include <asm/mpic.h>
31 #include <asm/rtas.h>
32
33 static int __devinit smp_chrp_kick_cpu(int nr)
34 {
35         *(unsigned long *)KERNELBASE = nr;
36         asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory");
37
38         return 0;
39 }
40
41 static void __devinit smp_chrp_setup_cpu(int cpu_nr)
42 {
43         mpic_setup_this_cpu();
44 }
45
46 /* CHRP with openpic */
47 struct smp_ops_t chrp_smp_ops = {
48         .message_pass = smp_mpic_message_pass,
49         .probe = smp_mpic_probe,
50         .kick_cpu = smp_chrp_kick_cpu,
51         .setup_cpu = smp_chrp_setup_cpu,
52         .give_timebase = rtas_give_timebase,
53         .take_timebase = rtas_take_timebase,
54 };