projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c51ed4f MD |
1 | /* |
| 2 | * SMP support for R-Mobile / SH-Mobile | |
| 3 | * | |
| 4 | * Copyright (C) 2010 Magnus Damm | |
| c413521e | 5 | * Copyright (C) 2011 Paul Mundt |
| 1c51ed4f MD |
6 | * |
| 7 | * Based on vexpress, Copyright (C) 2002 ARM Ltd, All Rights Reserved | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License version 2 as | |
| 11 | * published by the Free Software Foundation. | |
| 12 | */ | |
| 13 | #include <linux/init.h> | |
| 14 | #include <linux/errno.h> | |
| 15 | #include <linux/delay.h> | |
| 16 | #include <linux/device.h> | |
| 17 | #include <linux/smp.h> | |
| 18 | #include <linux/io.h> | |
| 19 | #include <asm/localtimer.h> | |
| 72f4d579 MD |
20 | #include <asm/mach-types.h> |
| 21 | #include <mach/common.h> | |
| 1c51ed4f MD |
22 | |
| 23 | static unsigned int __init shmobile_smp_get_core_count(void) | |
| 24 | { | |
| 72f4d579 MD |
25 | if (machine_is_ag5evm()) |
| 26 | return sh73a0_get_core_count(); | |
| 27 | ||
| 1c51ed4f MD |
28 | return 1; |
| 29 | } | |
| 30 | ||
| 31 | static void __init shmobile_smp_prepare_cpus(void) | |
| 32 | { | |
| 72f4d579 MD |
33 | if (machine_is_ag5evm()) |
| 34 | sh73a0_smp_prepare_cpus(); | |
| 1c51ed4f MD |
35 | } |
| 36 | ||
| 1c51ed4f MD |
37 | void __cpuinit platform_secondary_init(unsigned int cpu) |
| 38 | { | |
| 39 | trace_hardirqs_off(); | |
| 72f4d579 MD |
40 | |
| 41 | if (machine_is_ag5evm()) | |
| 42 | sh73a0_secondary_init(cpu); | |
| 1c51ed4f MD |
43 | } |
| 44 | ||
| 45 | int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) | |
| 46 | { | |
| 72f4d579 MD |
47 | if (machine_is_ag5evm()) |
| 48 | return sh73a0_boot_secondary(cpu); | |
| 49 | ||
| 1c51ed4f MD |
50 | return -ENOSYS; |
| 51 | } | |
| 52 | ||
| 53 | void __init smp_init_cpus(void) | |
| 54 | { | |
| 55 | unsigned int ncores = shmobile_smp_get_core_count(); | |
| 56 | unsigned int i; | |
| 57 | ||
| 58 | for (i = 0; i < ncores; i++) | |
| 59 | set_cpu_possible(i, true); | |
| 60 | } | |
| 61 | ||
| c413521e | 62 | void __init platform_smp_prepare_cpus(unsigned int max_cpus) |
| 1c51ed4f | 63 | { |
| 1c51ed4f MD |
64 | int i; |
| 65 | ||
| 1c51ed4f MD |
66 | for (i = 0; i < max_cpus; i++) |
| 67 | set_cpu_present(i, true); | |
| 68 | ||
| c413521e | 69 | shmobile_smp_prepare_cpus(); |
| 1c51ed4f | 70 | } |