usermodehelper: Tidy up waiting
[linux-2.6] / arch / i386 / mach-voyager / setup.c
1 /*
2  *      Machine specific setup for generic
3  */
4
5 #include <linux/init.h>
6 #include <linux/interrupt.h>
7 #include <asm/arch_hooks.h>
8 #include <asm/voyager.h>
9 #include <asm/e820.h>
10 #include <asm/io.h>
11 #include <asm/setup.h>
12
13 void __init pre_intr_init_hook(void)
14 {
15         init_ISA_irqs();
16 }
17
18 /*
19  * IRQ2 is cascade interrupt to second interrupt controller
20  */
21 static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL};
22
23 void __init intr_init_hook(void)
24 {
25 #ifdef CONFIG_SMP
26         smp_intr_init();
27 #endif
28
29         setup_irq(2, &irq2);
30 }
31
32 void __init pre_setup_arch_hook(void)
33 {
34         /* Voyagers run their CPUs from independent clocks, so disable
35          * the TSC code because we can't sync them */
36         tsc_disable = 1;
37 }
38
39 void __init trap_init_hook(void)
40 {
41 }
42
43 static struct irqaction irq0  = {
44         .handler = timer_interrupt,
45         .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL,
46         .mask = CPU_MASK_NONE,
47         .name = "timer"
48 };
49
50 void __init time_init_hook(void)
51 {
52         irq0.mask = cpumask_of_cpu(safe_smp_processor_id());
53         setup_irq(0, &irq0);
54 }
55
56 /* Hook for machine specific memory setup. */
57
58 char * __init machine_specific_memory_setup(void)
59 {
60         char *who;
61
62         who = "NOT VOYAGER";
63
64         if(voyager_level == 5) {
65                 __u32 addr, length;
66                 int i;
67
68                 who = "Voyager-SUS";
69
70                 e820.nr_map = 0;
71                 for(i=0; voyager_memory_detect(i, &addr, &length); i++) {
72                         add_memory_region(addr, length, E820_RAM);
73                 }
74                 return who;
75         } else if(voyager_level == 4) {
76                 __u32 tom;
77                 __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8;
78                 /* select the DINO config space */
79                 outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT);
80                 /* Read DINO top of memory register */
81                 tom = ((inb(catbase + 0x4) & 0xf0) << 16)
82                         + ((inb(catbase + 0x5) & 0x7f) << 24);
83
84                 if(inb(catbase) != VOYAGER_DINO) {
85                         printk(KERN_ERR "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n");
86                         tom = (EXT_MEM_K)<<10;
87                 }
88                 who = "Voyager-TOM";
89                 add_memory_region(0, 0x9f000, E820_RAM);
90                 /* map from 1M to top of memory */
91                 add_memory_region(1*1024*1024, tom - 1*1024*1024, E820_RAM);
92                 /* FIXME: Should check the ASICs to see if I need to
93                  * take out the 8M window.  Just do it at the moment
94                  * */
95                 add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED);
96                 return who;
97         }
98
99         who = "BIOS-e820";
100
101         /*
102          * Try to copy the BIOS-supplied E820-map.
103          *
104          * Otherwise fake a memory map; one section from 0k->640k,
105          * the next section from 1mb->appropriate_mem_k
106          */
107         sanitize_e820_map(E820_MAP, &E820_MAP_NR);
108         if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) {
109                 unsigned long mem_size;
110
111                 /* compare results from other methods and take the greater */
112                 if (ALT_MEM_K < EXT_MEM_K) {
113                         mem_size = EXT_MEM_K;
114                         who = "BIOS-88";
115                 } else {
116                         mem_size = ALT_MEM_K;
117                         who = "BIOS-e801";
118                 }
119
120                 e820.nr_map = 0;
121                 add_memory_region(0, LOWMEMSIZE(), E820_RAM);
122                 add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
123         }
124         return who;
125 }