linux/arch/x86/include/asm/setup.h

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#ifndef _ASM_X86_SETUP_H
#define _ASM_X86_SETUP_H
#define COMMAND_LINE_SIZE 2048
#ifndef __ASSEMBLY__
/* Interrupt control for vSMPowered x86_64 systems */
void vsmp_init(void);
void setup_bios_corruption_check(void);
#ifdef CONFIG_X86_VISWS
extern void visws_early_detect(void);
extern int is_visws_box(void);
#else
static inline void visws_early_detect(void) { }
static inline int is_visws_box(void) { return 0; }
#endif
x86: fix wakeup_cpu with numaq/es7000, v2 Impact: fix secondary-CPU wakeup/init path with numaq and es7000 While looking at wakeup_secondary_cpu for WAKE_SECONDARY_VIA_NMI: |#ifdef WAKE_SECONDARY_VIA_NMI |/* | * Poke the other CPU in the eye via NMI to wake it up. Remember that the normal | * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this | * won't ... remember to clear down the APIC, etc later. | */ |static int __devinit |wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip) |{ | unsigned long send_status, accept_status = 0; | int maxlvt; |... | if (APIC_INTEGRATED(apic_version[phys_apicid])) { | maxlvt = lapic_get_maxlvt(); I noticed that there is no warning about undefined phys_apicid... because WAKE_SECONDARY_VIA_NMI and WAKE_SECONDARY_VIA_INIT can not be defined at the same time. So NUMAQ is using wrong wakeup_secondary_cpu. WAKE_SECONDARY_VIA_NMI, WAKE_SECONDARY_VIA_INIT and WAKE_SECONDARY_VIA_MIP are variants of a weird and fragile preprocessor-driven "HAL" mechanisms to specify the kind of secondary-CPU wakeup strategy a given x86 kernel will use. The vast majority of systems want to use INIT for secondary wakeup - NUMAQ uses an NMI, (old-style-) ES7000 uses 'MIP' (a firmware driven in-memory flag to let secondaries continue). So convert these mechanisms to x86_quirks and add a ->wakeup_secondary_cpu() method to specify the rare exception to the sane default. Extend genapic accordingly as well, for 32-bit. While looking further, I noticed that functions in wakecup.h for numaq and es7000 are different to the default in mach_wakecpu.h - but smpboot.c will only use default mach_wakecpu.h with smphook.h. So we need to add mach_wakecpu.h for mach_generic, to properly support numaq and es7000, and vectorize the following SMP init methods: int trampoline_phys_low; int trampoline_phys_high; void (*wait_for_init_deassert)(atomic_t *deassert); void (*smp_callin_clear_local_apic)(void); void (*store_NMI_vector)(unsigned short *high, unsigned short *low); void (*restore_NMI_vector)(unsigned short *high, unsigned short *low); void (*inquire_remote_apic)(int apicid); Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 11:12:49 +00:00
extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip);
extern int wakeup_secondary_cpu_via_init(int apicid, unsigned long start_eip);
/*
* Any setup quirks to be performed?
*/
struct mpc_cpu;
struct mpc_bus;
struct mpc_oemtable;
struct x86_quirks {
int (*arch_pre_time_init)(void);
int (*arch_time_init)(void);
int (*arch_pre_intr_init)(void);
int (*arch_intr_init)(void);
int (*arch_trap_init)(void);
char * (*arch_memory_setup)(void);
int (*mach_get_smp_config)(unsigned int early);
int (*mach_find_smp_config)(unsigned int reserve);
int *mpc_record;
int (*mpc_apic_id)(struct mpc_cpu *m);
void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
void (*mpc_oem_pci_bus)(struct mpc_bus *m);
void (*smp_read_mpc_oem)(struct mpc_oemtable *oemtable,
unsigned short oemsize);
int (*setup_ioapic_ids)(void);
int (*update_genapic)(void);
};
extern struct x86_quirks *x86_quirks;
extern unsigned long saved_video_mode;
#ifndef CONFIG_PARAVIRT
#define paravirt_post_allocator_init() do {} while (0)
#endif
#endif /* __ASSEMBLY__ */
#ifdef __KERNEL__
#ifdef __i386__
#include <linux/pfn.h>
/*
* Reserved space for vmalloc and iomap - defined in asm/page.h
*/
#define MAXMEM_PFN PFN_DOWN(MAXMEM)
#define MAX_NONPAE_PFN (1 << 20)
#endif /* __i386__ */
#define PARAM_SIZE 4096 /* sizeof(struct boot_params) */
#define OLD_CL_MAGIC 0xA33F
#define OLD_CL_ADDRESS 0x020 /* Relative to real mode data */
#define NEW_CL_POINTER 0x228 /* Relative to real mode data */
#ifndef __ASSEMBLY__
#include <asm/bootparam.h>
#ifndef _SETUP
/*
* This is set up by the setup-routine at boot-time
*/
extern struct boot_params boot_params;
/*
* Do NOT EVER look at the BIOS memory size location.
* It does not work on many machines.
*/
#define LOWMEMSIZE() (0x9f000)
#ifdef __i386__
void __init i386_start_kernel(void);
extern void probe_roms(void);
extern unsigned long init_pg_tables_start;
extern unsigned long init_pg_tables_end;
#else
void __init x86_64_init_pda(void);
void __init x86_64_start_kernel(char *real_mode);
void __init x86_64_start_reservations(char *real_mode_data);
#endif /* __i386__ */
#endif /* _SETUP */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_X86_SETUP_H */