Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* Hook for machine specific memory setup. |
2 | * | |
3 | * This is included late in kernel/setup.c so that it can make use of all of | |
4 | * the static functions. */ | |
5 | ||
6 | static char * __init machine_specific_memory_setup(void) | |
7 | { | |
8 | char *who; | |
9 | ||
10 | who = "NOT VOYAGER"; | |
11 | ||
12 | if(voyager_level == 5) { | |
13 | __u32 addr, length; | |
14 | int i; | |
15 | ||
16 | who = "Voyager-SUS"; | |
17 | ||
18 | e820.nr_map = 0; | |
19 | for(i=0; voyager_memory_detect(i, &addr, &length); i++) { | |
20 | add_memory_region(addr, length, E820_RAM); | |
21 | } | |
22 | return who; | |
23 | } else if(voyager_level == 4) { | |
24 | __u32 tom; | |
25 | __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8; | |
26 | /* select the DINO config space */ | |
27 | outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT); | |
28 | /* Read DINO top of memory register */ | |
29 | tom = ((inb(catbase + 0x4) & 0xf0) << 16) | |
30 | + ((inb(catbase + 0x5) & 0x7f) << 24); | |
31 | ||
32 | if(inb(catbase) != VOYAGER_DINO) { | |
33 | printk(KERN_ERR "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n"); | |
34 | tom = (EXT_MEM_K)<<10; | |
35 | } | |
36 | who = "Voyager-TOM"; | |
37 | add_memory_region(0, 0x9f000, E820_RAM); | |
38 | /* map from 1M to top of memory */ | |
39 | add_memory_region(1*1024*1024, tom - 1*1024*1024, E820_RAM); | |
40 | /* FIXME: Should check the ASICs to see if I need to | |
41 | * take out the 8M window. Just do it at the moment | |
42 | * */ | |
43 | add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED); | |
44 | return who; | |
45 | } | |
46 | ||
47 | who = "BIOS-e820"; | |
48 | ||
49 | /* | |
50 | * Try to copy the BIOS-supplied E820-map. | |
51 | * | |
52 | * Otherwise fake a memory map; one section from 0k->640k, | |
53 | * the next section from 1mb->appropriate_mem_k | |
54 | */ | |
55 | sanitize_e820_map(E820_MAP, &E820_MAP_NR); | |
56 | if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) { | |
57 | unsigned long mem_size; | |
58 | ||
59 | /* compare results from other methods and take the greater */ | |
60 | if (ALT_MEM_K < EXT_MEM_K) { | |
61 | mem_size = EXT_MEM_K; | |
62 | who = "BIOS-88"; | |
63 | } else { | |
64 | mem_size = ALT_MEM_K; | |
65 | who = "BIOS-e801"; | |
66 | } | |
67 | ||
68 | e820.nr_map = 0; | |
69 | add_memory_region(0, LOWMEMSIZE(), E820_RAM); | |
70 | add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM); | |
71 | } | |
72 | return who; | |
73 | } |