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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 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 | |
| 956 | decky | 33 | #define KERNEL_PHYSICAL_ADDRESS 0x1000 |
| 34 | #define KERNEL_VIRTUAL_ADDRESS 0x80001000 |
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| 913 | decky | 35 | #define KERNEL_START &_binary_____________kernel_kernel_bin_start |
| 36 | #define KERNEL_END &_binary_____________kernel_kernel_bin_end |
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| 37 | #define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START) |
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| 887 | decky | 38 | |
| 964 | decky | 39 | memmap_t memmap; |
| 40 | |||
| 885 | decky | 41 | void bootstrap(void) |
| 42 | { |
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| 953 | decky | 43 | printf("\nHelenOS PPC Bootloader\n"); |
| 885 | decky | 44 | |
| 956 | decky | 45 | void *phys = ofw_translate(&start); |
| 46 | printf("loaded at %L (physical %L)\n", &start, phys); |
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| 953 | decky | 47 | |
| 964 | decky | 48 | if (!ofw_memmap(&memmap)) { |
| 49 | printf("Unable to get memory map\n"); |
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| 50 | halt(); |
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| 51 | } |
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| 52 | printf("total memory %d MB\n", memmap.total >> 20); |
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| 53 | |||
| 956 | decky | 54 | // FIXME: map just the kernel |
| 55 | if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, 1024 * 1024, 0) != 0) { |
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| 56 | printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS); |
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| 885 | decky | 57 | halt(); |
| 58 | } |
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| 956 | decky | 59 | 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 |
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| 61 | memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE); |
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| 885 | decky | 62 | |
| 956 | decky | 63 | // FIXME: proper framebuffer mapping |
| 64 | ofw_map((void *) 0x84000000, (void *) 0x84000000, 2 * 1024 * 1024, 0); |
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| 65 | |||
| 913 | decky | 66 | printf("Booting the kernel...\n"); |
| 956 | decky | 67 | |
| 68 | flush_instruction_cache(); |
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| 964 | decky | 69 | jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, ofw_translate(&memmap)); |
| 885 | decky | 70 | } |