2 * Machine specific setup for generic
5 #include <linux/config.h>
6 #include <linux/init.h>
7 #include <linux/interrupt.h>
9 #include <asm/arch_hooks.h>
10 #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)
34 void __init
pre_setup_arch_hook(void)
36 /* Voyagers run their CPUs from independent clocks, so disable
37 * the TSC code because we can't sync them */
41 void __init
trap_init_hook(void)
45 static struct irqaction irq0
= { timer_interrupt
, SA_INTERRUPT
, CPU_MASK_NONE
, "timer", NULL
, NULL
};
47 void __init
time_init_hook(void)
52 /* Hook for machine specific memory setup. */
54 char * __init
machine_specific_memory_setup(void)
60 if(voyager_level
== 5) {
67 for(i
=0; voyager_memory_detect(i
, &addr
, &length
); i
++) {
68 add_memory_region(addr
, length
, E820_RAM
);
71 } else if(voyager_level
== 4) {
73 __u16 catbase
= inb(VOYAGER_SSPB_RELOCATION_PORT
)<<8;
74 /* select the DINO config space */
75 outb(VOYAGER_DINO
, VOYAGER_CAT_CONFIG_PORT
);
76 /* Read DINO top of memory register */
77 tom
= ((inb(catbase
+ 0x4) & 0xf0) << 16)
78 + ((inb(catbase
+ 0x5) & 0x7f) << 24);
80 if(inb(catbase
) != VOYAGER_DINO
) {
81 printk(KERN_ERR
"Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n");
82 tom
= (EXT_MEM_K
)<<10;
85 add_memory_region(0, 0x9f000, E820_RAM
);
86 /* map from 1M to top of memory */
87 add_memory_region(1*1024*1024, tom
- 1*1024*1024, E820_RAM
);
88 /* FIXME: Should check the ASICs to see if I need to
89 * take out the 8M window. Just do it at the moment
91 add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED
);
98 * Try to copy the BIOS-supplied E820-map.
100 * Otherwise fake a memory map; one section from 0k->640k,
101 * the next section from 1mb->appropriate_mem_k
103 sanitize_e820_map(E820_MAP
, &E820_MAP_NR
);
104 if (copy_e820_map(E820_MAP
, E820_MAP_NR
) < 0) {
105 unsigned long mem_size
;
107 /* compare results from other methods and take the greater */
108 if (ALT_MEM_K
< EXT_MEM_K
) {
109 mem_size
= EXT_MEM_K
;
112 mem_size
= ALT_MEM_K
;
117 add_memory_region(0, LOWMEMSIZE(), E820_RAM
);
118 add_memory_region(HIGH_MEMORY
, mem_size
<< 10, E820_RAM
);