2 * Machine specific setup for pc9800
5 #include <linux/config.h>
8 #include <linux/init.h>
10 #include <linux/interrupt.h>
11 #include <linux/apm_bios.h>
12 #include <asm/setup.h>
13 #include <asm/arch_hooks.h>
15 struct sys_desc_table_struct {
16 unsigned short length;
17 unsigned char table[0];
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 * IRQ7 is cascade interrupt to second interrupt controller
37 static struct irqaction irq7 = { no_action, 0, 0, "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
58 * pre_setup_arch_hook - hook called prior to any setup_arch() execution
61 * generally used to activate any machine specific identification
62 * routines that may be needed before setup_arch() runs. On VISWS
63 * this is used to get the board revision and type.
65 void __init pre_setup_arch_hook(void)
67 SYS_DESC_TABLE.length = 0;
69 /* In PC-9800, APM BIOS version is written in BCD...?? */
70 APM_BIOS_INFO.version = (APM_BIOS_INFO.version & 0xff00)
71 | ((APM_BIOS_INFO.version & 0x00f0) >> 4);
75 * trap_init_hook - initialise system specific traps
78 * Called as the final act of trap_init(). Used in VISWS to initialise
79 * the various board specific APIC traps.
81 void __init trap_init_hook(void)
85 static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, 0, "timer", NULL, NULL};
88 * time_init_hook - do any specific initialisations for the system timer.
91 * Must plug the system timer interrupt source at HZ into the IRQ listed
92 * in irq_vectors.h:TIMER_IRQ
94 void __init time_init_hook(void)
101 * mca_nmi_hook - hook into MCA specific NMI chain
104 * The MCA (Microchannel Architecture) has an NMI chain for NMI sources
105 * along the MCA bus. Use this to hook into that chain if you will need
108 void __init mca_nmi_hook(void)
110 /* If I recall correctly, there's a whole bunch of other things that
111 * we can do to check for NMI problems, but that's all I know about
115 printk("NMI generated from unknown source!\n");