Subversion Repositories HelenOS-historic

Rev

Rev 986 | Rev 1058 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
885 decky 1
/*
2
 * Copyright (C) 2005 Martin Decky
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
#include "main.h" 
30
#include "printf.h"
913 decky 31
#include "asm.h"
885 decky 32
 
986 decky 33
#define KERNEL_PHYSICAL_ADDRESS 0x0000
34
#define KERNEL_VIRTUAL_ADDRESS 0x80000000
35
#define KERNEL_BOOT_OFFSET 0x2000
913 decky 36
#define KERNEL_START &_binary_____________kernel_kernel_bin_start
37
#define KERNEL_END &_binary_____________kernel_kernel_bin_end
38
#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)
887 decky 39
 
964 decky 40
memmap_t memmap;
41
 
885 decky 42
void bootstrap(void)
43
{
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);
953 decky 48
 
964 decky 49
    if (!ofw_memmap(&memmap)) {
50
        printf("Unable to get memory map\n");
51
        halt();
52
    }
53
    printf("total memory %d MB\n", memmap.total >> 20);
54
 
1022 decky 55
    if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_SIZE + KERNEL_BOOT_OFFSET, 0) != 0) {
956 decky 56
        printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);
885 decky 57
        halt();
58
    }
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
61
    memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);
885 decky 62
 
981 decky 63
    // FIXME: proper hardware detection & mapping
64
    ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0);
65
    ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0);
956 decky 66
 
1022 decky 67
    void *tramp = ofw_translate(&real_mode);
68
    printf("bootstrap trampoline at %L (physical %L)\n", &real_mode, tramp);
913 decky 69
    printf("Booting the kernel...\n");
956 decky 70
 
71
    flush_instruction_cache();
1022 decky 72
    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS + KERNEL_BOOT_OFFSET, ofw_translate(&memmap), tramp);
885 decky 73
}