1/*
2 * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
17 */
18
19#include <linux/init.h>
20#include <linux/sched.h>
21#include <linux/smp.h>
22#include <asm/processor.h>
23
24#include "cfe_api.h"
25#include "cfe_error.h"
26
27/*
28 * Use CFE to find out how many CPUs are available, setting up
29 * phys_cpu_present_map and the logical/physical mappings.
30 * XXXKW will the boot CPU ever not be physical 0?
31 *
32 * Common setup before any secondaries are started
33 */
34void __init plat_smp_setup(void)
35{
36	int i, num;
37
38	cpus_clear(phys_cpu_present_map);
39	cpu_set(0, phys_cpu_present_map);
40	__cpu_number_map[0] = 0;
41	__cpu_logical_map[0] = 0;
42
43	for (i = 1, num = 0; i < NR_CPUS; i++) {
44		if (cfe_cpu_stop(i) == 0) {
45			cpu_set(i, phys_cpu_present_map);
46			__cpu_number_map[i] = ++num;
47			__cpu_logical_map[num] = i;
48		}
49	}
50	printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
51}
52
53void __init plat_prepare_cpus(unsigned int max_cpus)
54{
55}
56
57/*
58 * Setup the PC, SP, and GP of a secondary processor and start it
59 * running!
60 */
61void prom_boot_secondary(int cpu, struct task_struct *idle)
62{
63	int retval;
64
65	retval = cfe_cpu_start(cpu_logical_map(cpu), &smp_bootstrap,
66			       __KSTK_TOS(idle),
67			       (unsigned long)task_thread_info(idle), 0);
68	if (retval != 0)
69		printk("cfe_start_cpu(%i) returned %i\n" , cpu, retval);
70}
71
72/*
73 * Code to run on secondary just after probing the CPU
74 */
75void prom_init_secondary(void)
76{
77#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
78	extern void bcm1480_smp_init(void);
79	bcm1480_smp_init();
80#elif defined(CONFIG_SIBYTE_SB1250)
81	extern void sb1250_smp_init(void);
82	sb1250_smp_init();
83#else
84#error invalid SMP configuration
85#endif
86}
87
88/*
89 * Do any tidying up before marking online and running the idle
90 * loop
91 */
92void prom_smp_finish(void)
93{
94#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
95	extern void bcm1480_smp_finish(void);
96	bcm1480_smp_finish();
97#elif defined(CONFIG_SIBYTE_SB1250)
98	extern void sb1250_smp_finish(void);
99	sb1250_smp_finish();
100#else
101#error invalid SMP configuration
102#endif
103}
104
105/*
106 * Final cleanup after all secondaries booted
107 */
108void prom_cpus_done(void)
109{
110}
111