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Rev | Author | Line No. | Line |
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885 | decky | 1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include "main.h" |
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30 | #include "printf.h" |
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913 | decky | 31 | #include "asm.h" |
885 | decky | 32 | |
986 | decky | 33 | #define KERNEL_PHYSICAL_ADDRESS 0x0000 |
34 | #define KERNEL_VIRTUAL_ADDRESS 0x80000000 |
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35 | #define KERNEL_BOOT_OFFSET 0x2000 |
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913 | decky | 36 | #define KERNEL_START &_binary_____________kernel_kernel_bin_start |
37 | #define KERNEL_END &_binary_____________kernel_kernel_bin_end |
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38 | #define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START) |
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887 | decky | 39 | |
964 | decky | 40 | memmap_t memmap; |
41 | |||
885 | decky | 42 | void bootstrap(void) |
43 | { |
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953 | decky | 44 | printf("\nHelenOS PPC Bootloader\n"); |
885 | decky | 45 | |
956 | decky | 46 | void *phys = ofw_translate(&start); |
47 | printf("loaded at %L (physical %L)\n", &start, phys); |
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953 | decky | 48 | |
964 | decky | 49 | if (!ofw_memmap(&memmap)) { |
50 | printf("Unable to get memory map\n"); |
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51 | halt(); |
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52 | } |
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53 | printf("total memory %d MB\n", memmap.total >> 20); |
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54 | |||
956 | decky | 55 | // FIXME: map just the kernel |
981 | decky | 56 | if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 64 * 1024 * 1024, 0) != 0) { |
956 | decky | 57 | printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS); |
885 | decky | 58 | halt(); |
59 | } |
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956 | decky | 60 | printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE); |
61 | // FIXME: relocate the kernel in real mode |
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62 | memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE); |
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885 | decky | 63 | |
981 | decky | 64 | // FIXME: proper hardware detection & mapping |
65 | ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0); |
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66 | ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0); |
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956 | decky | 67 | |
913 | decky | 68 | printf("Booting the kernel...\n"); |
956 | decky | 69 | |
70 | flush_instruction_cache(); |
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986 | decky | 71 | jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap)); |
885 | decky | 72 | } |