2 * Machine specific setup for generic
5 #include <linux/config.h>
7 #include <linux/init.h>
9 #include <linux/interrupt.h>
11 #include <asm/arch_hooks.h>
13 #ifdef CONFIG_HOTPLUG_CPU
14 #define DEFAULT_SEND_IPI (1)
16 #define DEFAULT_SEND_IPI (0)
19 int no_broadcast=DEFAULT_SEND_IPI;
22 * pre_intr_init_hook - initialisation prior to setting up interrupt vectors
25 * Perform any necessary interrupt initialisation prior to setting up
26 * the "ordinary" interrupt call gates. For legacy reasons, the ISA
27 * interrupts should be initialised here if the machine emulates a PC
30 void __init pre_intr_init_hook(void)
36 * IRQ2 is cascade interrupt to second interrupt controller
38 static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
41 * intr_init_hook - post gate setup interrupt initialisation
44 * Fill in any interrupts that may have been left out by the general
45 * init_IRQ() routine. interrupts having to do with the machine rather
46 * than the devices on the I/O bus (like APIC interrupts in intel MP
47 * systems) are started here.
49 void __init intr_init_hook(void)
51 #ifdef CONFIG_X86_LOCAL_APIC
60 * pre_setup_arch_hook - hook called prior to any setup_arch() execution
63 * generally used to activate any machine specific identification
64 * routines that may be needed before setup_arch() runs. On VISWS
65 * this is used to get the board revision and type.
67 void __init pre_setup_arch_hook(void)
72 * trap_init_hook - initialise system specific traps
75 * Called as the final act of trap_init(). Used in VISWS to initialise
76 * the various board specific APIC traps.
78 void __init trap_init_hook(void)
82 static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
85 * time_init_hook - do any specific initialisations for the system timer.
88 * Must plug the system timer interrupt source at HZ into the IRQ listed
89 * in irq_vectors.h:TIMER_IRQ
91 void __init time_init_hook(void)
98 * mca_nmi_hook - hook into MCA specific NMI chain
101 * The MCA (Microchannel Arcitecture) has an NMI chain for NMI sources
102 * along the MCA bus. Use this to hook into that chain if you will need
105 void __init mca_nmi_hook(void)
107 /* If I recall correctly, there's a whole bunch of other things that
108 * we can do to check for NMI problems, but that's all I know about
112 printk("NMI generated from unknown source!\n");
116 static __init int no_ipi_broadcast(char *str)
118 get_option(&str, &no_broadcast);
119 printk ("Using %s mode\n", no_broadcast ? "No IPI Broadcast" :
124 __setup("no_ipi_broadcast", no_ipi_broadcast);
126 static int __init print_ipi_mode(void)
128 printk ("Using IPI %s mode\n", no_broadcast ? "No-Shortcut" :
133 late_initcall(print_ipi_mode);