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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 "main.h" |
29 | #include "main.h" |
30 | #include "printf.h" |
30 | #include "printf.h" |
31 | #include "asm.h" |
31 | #include "asm.h" |
32 | 32 | ||
33 | #define KERNEL_PHYSICAL_ADDRESS 0x2000 |
33 | #define KERNEL_PHYSICAL_ADDRESS 0x0000 |
34 | #define KERNEL_VIRTUAL_ADDRESS 0x80002000 |
34 | #define KERNEL_VIRTUAL_ADDRESS 0x80000000 |
- | 35 | #define KERNEL_BOOT_OFFSET 0x2000 |
|
35 | #define KERNEL_START &_binary_____________kernel_kernel_bin_start |
36 | #define KERNEL_START &_binary_____________kernel_kernel_bin_start |
36 | #define KERNEL_END &_binary_____________kernel_kernel_bin_end |
37 | #define KERNEL_END &_binary_____________kernel_kernel_bin_end |
37 | #define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START) |
38 | #define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START) |
38 | 39 | ||
39 | memmap_t memmap; |
40 | memmap_t memmap; |
40 | 41 | ||
41 | void bootstrap(void) |
42 | void bootstrap(void) |
42 | { |
43 | { |
43 | printf("\nHelenOS PPC Bootloader\n"); |
44 | printf("\nHelenOS PPC Bootloader\n"); |
44 | 45 | ||
45 | void *phys = ofw_translate(&start); |
46 | void *phys = ofw_translate(&start); |
46 | printf("loaded at %L (physical %L)\n", &start, phys); |
47 | printf("loaded at %L (physical %L)\n", &start, phys); |
47 | 48 | ||
48 | if (!ofw_memmap(&memmap)) { |
49 | if (!ofw_memmap(&memmap)) { |
49 | printf("Unable to get memory map\n"); |
50 | printf("Unable to get memory map\n"); |
50 | halt(); |
51 | halt(); |
51 | } |
52 | } |
52 | printf("total memory %d MB\n", memmap.total >> 20); |
53 | printf("total memory %d MB\n", memmap.total >> 20); |
53 | 54 | ||
54 | // FIXME: map just the kernel |
55 | // FIXME: map just the kernel |
55 | if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 64 * 1024 * 1024, 0) != 0) { |
56 | if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 64 * 1024 * 1024, 0) != 0) { |
56 | printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS); |
57 | printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS); |
57 | halt(); |
58 | halt(); |
58 | } |
59 | } |
59 | printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE); |
60 | printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE); |
60 | // FIXME: relocate the kernel in real mode |
61 | // FIXME: relocate the kernel in real mode |
61 | memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE); |
62 | memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE); |
62 | 63 | ||
63 | // FIXME: proper hardware detection & mapping |
64 | // FIXME: proper hardware detection & mapping |
64 | ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0); |
65 | ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0); |
65 | ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0); |
66 | ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0); |
66 | 67 | ||
67 | printf("Booting the kernel...\n"); |
68 | printf("Booting the kernel...\n"); |
68 | 69 | ||
69 | flush_instruction_cache(); |
70 | flush_instruction_cache(); |
70 | jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, ofw_translate(&memmap)); |
71 | jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap)); |
71 | } |
72 | } |
72 | 73 |