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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
2 | * Copyright (C) 2005 Martin Decky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <arch/mm/memory_init.h> |
29 | #include <arch/mm/memory_init.h> |
30 | #include <genarch/ofw/ofw.h> |
30 | #include <genarch/ofw/memory_init.h> |
31 | #include <panic.h> |
31 | #include <typedefs.h> |
32 | #include <mm/frame.h> |
- | |
33 | #include <align.h> |
- | |
34 | - | ||
35 | #define MEMMAP_MAX_RECORDS 32 |
- | |
36 | - | ||
37 | typedef struct { |
- | |
38 | __u32 start; |
- | |
39 | __u32 size; |
- | |
40 | } memmap_t; |
- | |
41 | - | ||
42 | static memmap_t memmap[MEMMAP_MAX_RECORDS]; |
- | |
43 | size_t total_mem = 0; |
- | |
44 | - | ||
45 | static void init_memmap(void) |
- | |
46 | { |
- | |
47 | int i; |
- | |
48 | - | ||
49 | phandle handle = ofw_find_device("/memory"); |
- | |
50 | if (handle == -1) |
- | |
51 | panic("No RAM\n"); |
- | |
52 | - | ||
53 | size_t ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); |
- | |
54 | if (ret == -1) |
- | |
55 | panic("Device /memory has no reg property\n"); |
- | |
56 | - | ||
57 | - | ||
58 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
- | |
59 | if (memmap[i].size == 0) |
- | |
60 | break; |
- | |
61 | total_mem += memmap[i].size; |
- | |
62 | } |
- | |
63 | } |
- | |
64 | 32 | ||
65 | void preboot_read_config(void) |
33 | void preboot_read_config(void) |
66 | { |
34 | { |
67 | init_memmap(); |
35 | ofw_init_memmap(); |
68 | } |
36 | } |
69 | 37 | ||
70 | size_t get_memory_size(void) |
38 | size_t get_memory_size(void) |
71 | { |
39 | { |
72 | return total_mem; |
40 | return ofw_get_memory_size(); |
73 | } |
- | |
74 | - | ||
75 | void ppc_init_zones(void) |
- | |
76 | { |
- | |
77 | int i; |
- | |
78 | pfn_t confdata; |
- | |
79 | - | ||
80 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
- | |
81 | if (memmap[i].size == 0) |
- | |
82 | break; |
- | |
83 | confdata = ADDR2PFN(memmap[i].start); |
- | |
84 | if (confdata == 0) |
- | |
85 | confdata = 2; |
- | |
86 | zone_create(ADDR2PFN(memmap[i].start), |
- | |
87 | SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), |
- | |
88 | confdata, 0); |
- | |
89 | } |
- | |
90 | } |
41 | } |
91 | 42 |