blob: eab20e2db3239be2bbc80a3a86a190a4a6659ab2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 */
Ralf Baechle9b6695a2006-02-23 12:23:27 +000034void __init plat_smp_setup(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -070035{
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
Ralf Baechle9b6695a2006-02-23 12:23:27 +000043 for (i = 1, num = 0; i < NR_CPUS; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 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 }
Ralf Baechle9b6695a2006-02-23 12:23:27 +000050 printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num);
51}
52
53void __init plat_prepare_cpus(unsigned int max_cpus)
54{
Linus Torvalds1da177e2005-04-16 15:20:36 -070055}
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;
Ralf Baechle42a3b4f2005-09-03 15:56:17 -070064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 retval = cfe_cpu_start(cpu_logical_map(cpu), &smp_bootstrap,
66 __KSTK_TOS(idle),
Al Virodc8f6022006-01-12 01:06:07 -080067 (unsigned long)task_thread_info(idle), 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 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{
Andrew Isaacsonf137e462005-10-19 23:56:38 -070077#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)
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 extern void sb1250_smp_init(void);
82 sb1250_smp_init();
Andrew Isaacsonf137e462005-10-19 23:56:38 -070083#else
84#error invalid SMP configuration
85#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070086}
87
88/*
89 * Do any tidying up before marking online and running the idle
90 * loop
91 */
92void prom_smp_finish(void)
93{
Andrew Isaacsonf137e462005-10-19 23:56:38 -070094#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)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098 extern void sb1250_smp_finish(void);
99 sb1250_smp_finish();
Andrew Isaacsonf137e462005-10-19 23:56:38 -0700100#else
101#error invalid SMP configuration
102#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103}
104
105/*
106 * Final cleanup after all secondaries booted
107 */
108void prom_cpus_done(void)
109{
110}