| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * x86 SMP booting functions |
| 3 | * |
| 4 | * (c) 1995 Alan Cox, Building #3 <alan@redhat.com> |
| 5 | * (c) 1998, 1999, 2000 Ingo Molnar <mingo@redhat.com> |
| 6 | * Copyright 2001 Andi Kleen, SuSE Labs. |
| 7 | * |
| 8 | * Much of the core SMP work is based on previous work by Thomas Radke, to |
| 9 | * whom a great many thanks are extended. |
| 10 | * |
| 11 | * Thanks to Intel for making available several different Pentium, |
| 12 | * Pentium Pro and Pentium-II/Xeon MP machines. |
| 13 | * Original development of Linux SMP code supported by Caldera. |
| 14 | * |
| Andi Kleen | a8ab26f | 2005-04-16 15:25:19 -0700 | [diff] [blame] | 15 | * This code is released under the GNU General Public License version 2 |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * Fixes |
| 18 | * Felix Koop : NR_CPUS used properly |
| 19 | * Jose Renau : Handle single CPU case. |
| 20 | * Alan Cox : By repeated request 8) - Total BogoMIP report. |
| 21 | * Greg Wright : Fix for kernel stacks panic. |
| 22 | * Erich Boleyn : MP v1.4 and additional changes. |
| 23 | * Matthias Sattler : Changes for 2.1 kernel map. |
| 24 | * Michel Lespinasse : Changes for 2.1 kernel map. |
| 25 | * Michael Chastain : Change trampoline.S to gnu as. |
| 26 | * Alan Cox : Dumb bug: 'B' step PPro's are fine |
| 27 | * Ingo Molnar : Added APIC timers, based on code |
| 28 | * from Jose Renau |
| 29 | * Ingo Molnar : various cleanups and rewrites |
| 30 | * Tigran Aivazian : fixed "0.00 in /proc/uptime on SMP" bug. |
| 31 | * Maciej W. Rozycki : Bits for genuine 82489DX APICs |
| 32 | * Andi Kleen : Changed for SMP boot into long mode. |
| Andi Kleen | a8ab26f | 2005-04-16 15:25:19 -0700 | [diff] [blame] | 33 | * Rusty Russell : Hacked into shape for new "hotplug" boot process. |
| 34 | * Andi Kleen : Converted to new state machine. |
| 35 | * Various cleanups. |
| 36 | * Probably mostly hotplug CPU ready now. |
| Ashok Raj | 76e4f66 | 2005-06-25 14:55:00 -0700 | [diff] [blame] | 37 | * Ashok Raj : CPU hotplug support |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | */ |
| 39 | |
| Andi Kleen | a8ab26f | 2005-04-16 15:25:19 -0700 | [diff] [blame] | 40 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/init.h> |
| 42 | |
| 43 | #include <linux/mm.h> |
| 44 | #include <linux/kernel_stat.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <linux/bootmem.h> |
| 46 | #include <linux/thread_info.h> |
| 47 | #include <linux/module.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/delay.h> |
| 49 | #include <linux/mc146818rtc.h> |
| Andrew Morton | a3bc0db | 2006-09-25 23:32:33 -0700 | [diff] [blame] | 50 | #include <linux/smp.h> |
| Christoph Hellwig | 1eeb66a | 2007-05-08 00:27:03 -0700 | [diff] [blame] | 51 | #include <linux/kdebug.h> |
| Andrew Morton | a3bc0db | 2006-09-25 23:32:33 -0700 | [diff] [blame] | 52 | |
| Glauber de Oliveira Costa | 771263d | 2008-03-19 14:26:09 -0300 | [diff] [blame] | 53 | #include <asm/acpi.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <asm/mtrr.h> |
| 55 | #include <asm/pgalloc.h> |
| 56 | #include <asm/desc.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <asm/tlbflush.h> |
| 58 | #include <asm/proto.h> |
| Andi Kleen | 7515211 | 2005-05-16 21:53:34 -0700 | [diff] [blame] | 59 | #include <asm/nmi.h> |
| Al Viro | 9cdd304 | 2005-09-12 18:49:25 +0200 | [diff] [blame] | 60 | #include <asm/irq.h> |
| 61 | #include <asm/hw_irq.h> |
| Ravikiran G Thirumalai | 488fc08 | 2006-02-07 12:58:23 -0800 | [diff] [blame] | 62 | #include <asm/numa.h> |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| Glauber de Oliveira Costa | 8d77010 | 2008-03-19 14:25:31 -0300 | [diff] [blame] | 64 | #include <mach_wakecpu.h> |
| Glauber de Oliveira Costa | f6bc402 | 2008-03-19 14:25:53 -0300 | [diff] [blame] | 65 | #include <mach_apic.h> |
| Glauber de Oliveira Costa | eb44d0a | 2008-03-19 14:25:32 -0300 | [diff] [blame] | 66 | #include <smpboot_hooks.h> |
| Glauber de Oliveira Costa | 0717826 | 2008-03-19 14:25:54 -0300 | [diff] [blame] | 67 | #include <mach_apic.h> |
| Glauber de Oliveira Costa | 8d77010 | 2008-03-19 14:25:31 -0300 | [diff] [blame] | 68 | |
| Andi Kleen | a8ab26f | 2005-04-16 15:25:19 -0700 | [diff] [blame] | 69 | /* Set when the idlers are all forked */ |
| 70 | int smp_threads_ready; |
| 71 | |
| Andi Kleen | a8ab26f | 2005-04-16 15:25:19 -0700 | [diff] [blame] | 72 | cycles_t cacheflush_time; |
| 73 | unsigned long cache_decay_ticks; |