2 * Machine specific setup for generic
5 #include <linux/config.h>
7 #include <linux/init.h>
8 #include <linux/interrupt.h>
10 #include <asm/arch_hooks.h>
12 #ifdef CONFIG_HOTPLUG_CPU
13 #define DEFAULT_SEND_IPI (1)
15 #define DEFAULT_SEND_IPI (0)
18 int no_broadcast=DEFAULT_SEND_IPI;
21 * pre_intr_init_hook - initialisation prior to setting up interrupt vectors
24 * Perform any necessary interrupt initialisation prior to setting up
25 * the "ordinary" interrupt call gates. For legacy reasons, the ISA
26 * interrupts should be initialised here if the machine emulates a PC
29 void __init pre_intr_init_hook(void)
35 * IRQ2 is cascade interrupt to second interrupt controller
37 static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
40 * intr_init_hook - post gate setup interrupt initialisation
43 * Fill in any interrupts that may have been left out by the general
44 * init_IRQ() routine. interrupts having to do with the machine rather
45 * than the devices on the I/O bus (like APIC interrupts in intel MP
46 * systems) are started here.
48 void __init intr_init_hook(void)
50 #ifdef CONFIG_X86_LOCAL_APIC
59 * pre_setup_arch_hook - hook called prior to any setup_arch() execution
62 * generally used to activate any machine specific identification
63 * routines that may be needed before setup_arch() runs. On VISWS
64 * this is used to get the board revision and type.
66 void __init pre_setup_arch_hook(void)
71 * trap_init_hook - initialise system specific traps
74 * Called as the final act of trap_init(). Used in VISWS to initialise
75 * the various board specific APIC traps.
77 void __init trap_init_hook(void)
81 static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
84 * time_init_hook - do any specific initialisations for the system timer.
87 * Must plug the system timer interrupt source at HZ into the IRQ listed
88 * in irq_vectors.h:TIMER_IRQ
90 void __init time_init_hook(void)
97 * mca_nmi_hook - hook into MCA specific NMI chain
100 * The MCA (Microchannel Arcitecture) has an NMI chain for NMI sources
101 * along the MCA bus. Use this to hook into that chain if you will need
104 void __init mca_nmi_hook(void)
106 /* If I recall correctly, there's a whole bunch of other things that
107 * we can do to check for NMI problems, but that's all I know about
111 printk("NMI generated from unknown source!\n");
115 static __init int no_ipi_broadcast(char *str)
117 get_option(&str, &no_broadcast);
118 printk ("Using %s mode\n", no_broadcast ? "No IPI Broadcast" :
123 __setup("no_ipi_broadcast", no_ipi_broadcast);
125 static int __init print_ipi_mode(void)
127 printk ("Using IPI %s mode\n", no_broadcast ? "No-Shortcut" :
132 late_initcall(print_ipi_mode);