/arch/i386/mach-default/setup.c
https://bitbucket.org/evzijst/gittest · C · 106 lines · 37 code · 11 blank · 58 comment · 1 complexity · 5cf0ed075446c442e9f64291f3e490ce MD5 · raw file
- /*
- * Machine specific setup for generic
- */
- #include <linux/config.h>
- #include <linux/smp.h>
- #include <linux/init.h>
- #include <linux/irq.h>
- #include <linux/interrupt.h>
- #include <asm/acpi.h>
- #include <asm/arch_hooks.h>
- /**
- * pre_intr_init_hook - initialisation prior to setting up interrupt vectors
- *
- * Description:
- * Perform any necessary interrupt initialisation prior to setting up
- * the "ordinary" interrupt call gates. For legacy reasons, the ISA
- * interrupts should be initialised here if the machine emulates a PC
- * in any way.
- **/
- void __init pre_intr_init_hook(void)
- {
- init_ISA_irqs();
- }
- /*
- * IRQ2 is cascade interrupt to second interrupt controller
- */
- static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
- /**
- * intr_init_hook - post gate setup interrupt initialisation
- *
- * Description:
- * Fill in any interrupts that may have been left out by the general
- * init_IRQ() routine. interrupts having to do with the machine rather
- * than the devices on the I/O bus (like APIC interrupts in intel MP
- * systems) are started here.
- **/
- void __init intr_init_hook(void)
- {
- #ifdef CONFIG_X86_LOCAL_APIC
- apic_intr_init();
- #endif
- if (!acpi_ioapic)
- setup_irq(2, &irq2);
- }
- /**
- * pre_setup_arch_hook - hook called prior to any setup_arch() execution
- *
- * Description:
- * generally used to activate any machine specific identification
- * routines that may be needed before setup_arch() runs. On VISWS
- * this is used to get the board revision and type.
- **/
- void __init pre_setup_arch_hook(void)
- {
- }
- /**
- * trap_init_hook - initialise system specific traps
- *
- * Description:
- * Called as the final act of trap_init(). Used in VISWS to initialise
- * the various board specific APIC traps.
- **/
- void __init trap_init_hook(void)
- {
- }
- static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
- /**
- * time_init_hook - do any specific initialisations for the system timer.
- *
- * Description:
- * Must plug the system timer interrupt source at HZ into the IRQ listed
- * in irq_vectors.h:TIMER_IRQ
- **/
- void __init time_init_hook(void)
- {
- setup_irq(0, &irq0);
- }
- #ifdef CONFIG_MCA
- /**
- * mca_nmi_hook - hook into MCA specific NMI chain
- *
- * Description:
- * The MCA (Microchannel Arcitecture) has an NMI chain for NMI sources
- * along the MCA bus. Use this to hook into that chain if you will need
- * it.
- **/
- void __init mca_nmi_hook(void)
- {
- /* If I recall correctly, there's a whole bunch of other things that
- * we can do to check for NMI problems, but that's all I know about
- * at the moment.
- */
- printk("NMI generated from unknown source!\n");
- }
- #endif