2 * Machine specific setup for generic
5 #include <linux/config.h>
6 #include <linux/init.h>
7 #include <linux/interrupt.h>
8 #include <asm/arch_hooks.h>
9 #include <asm/voyager.h>
12 #include <asm/setup.h>
14 void __init pre_intr_init_hook(void)
20 * IRQ2 is cascade interrupt to second interrupt controller
22 static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
24 void __init intr_init_hook(void)
33 void __init pre_setup_arch_hook(void)
35 /* Voyagers run their CPUs from independent clocks, so disable
36 * the TSC code because we can't sync them */
40 void __init trap_init_hook(void)
44 static struct irqaction irq0 = { timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL};
46 void __init time_init_hook(void)
51 /* Hook for machine specific memory setup. */
53 char * __init machine_specific_memory_setup(void)
59 if(voyager_level == 5) {
66 for(i=0; voyager_memory_detect(i, &addr, &length); i++) {
67 add_memory_region(addr, length, E820_RAM);
70 } else if(voyager_level == 4) {
72 __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8;
73 /* select the DINO config space */
74 outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT);
75 /* Read DINO top of memory register */
76 tom = ((inb(catbase + 0x4) & 0xf0) << 16)
77 + ((inb(catbase + 0x5) & 0x7f) << 24);
79 if(inb(catbase) != VOYAGER_DINO) {
80 printk(KERN_ERR "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n");
81 tom = (EXT_MEM_K)<<10;
84 add_memory_region(0, 0x9f000, E820_RAM);
85 /* map from 1M to top of memory */
86 add_memory_region(1*1024*1024, tom - 1*1024*1024, E820_RAM);
87 /* FIXME: Should check the ASICs to see if I need to
88 * take out the 8M window. Just do it at the moment
90 add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED);
97 * Try to copy the BIOS-supplied E820-map.
99 * Otherwise fake a memory map; one section from 0k->640k,
100 * the next section from 1mb->appropriate_mem_k
102 sanitize_e820_map(E820_MAP, &E820_MAP_NR);
103 if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) {
104 unsigned long mem_size;
106 /* compare results from other methods and take the greater */
107 if (ALT_MEM_K < EXT_MEM_K) {
108 mem_size = EXT_MEM_K;
111 mem_size = ALT_MEM_K;
116 add_memory_region(0, LOWMEMSIZE(), E820_RAM);
117 add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM);