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1018 decky 1
/*
2071 jermar 2
 * Copyright (c) 2005 Martin Decky
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 * Copyright (c) 2006 Jakub Jermar
1018 decky 4
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include "main.h" 
1764 jermar 31
#include <printf.h>
1018 decky 32
#include "asm.h"
1685 decky 33
#include "_components.h"
1894 jermar 34
#include <balloc.h>
1782 jermar 35
#include <ofw.h>
1894 jermar 36
#include <ofw_tree.h>
1837 jermar 37
#include "ofwarch.h"
1789 jermar 38
#include <align.h>
1018 decky 39
 
1782 jermar 40
bootinfo_t bootinfo;
1972 jermar 41
component_t components[COMPONENTS];
1782 jermar 42
 
1997 decky 43
char *release = RELEASE;
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#ifdef REVISION
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    char *revision = ", revision " REVISION;
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#else
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    char *revision = "";
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#endif
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#ifdef TIMESTAMP
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    char *timestamp = "\nBuilt on " TIMESTAMP;
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#else
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    char *timestamp = "";
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#endif
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57
/** Print version information. */
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static void version_print(void)
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{
3388 jermar 60
    printf("HelenOS SPARC64 Bootloader\nRelease %s%s%s\n"
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        "Copyright (c) 2006 HelenOS project\n",
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        release, revision, timestamp);
1997 decky 63
}
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1018 decky 65
void bootstrap(void)
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{
3399 jermar 67
    void *base = (void *) KERNEL_VIRTUAL_ADDRESS;
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    void *balloc_base;
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    unsigned int top = 0;
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    int i, j;
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1997 decky 72
    version_print();
1972 jermar 73
 
1685 decky 74
    init_components(components);
1782 jermar 75
 
1978 jermar 76
    if (!ofw_get_physmem_start(&bootinfo.physmem_start)) {
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        printf("Error: unable to get start of physical memory.\n");
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        halt();
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    }
80
 
1789 jermar 81
    if (!ofw_memmap(&bootinfo.memmap)) {
82
        printf("Error: unable to get memory map, halting.\n");
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        halt();
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    }
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86
    if (bootinfo.memmap.total == 0) {
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        printf("Error: no memory detected, halting.\n");
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        halt();
89
    }
3388 jermar 90
 
91
    /*
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     * SILO for some reason adds 0x400000 and subtracts
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     * bootinfo.physmem_start to/from silo_ramdisk_image.
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     * We just need plain physical address so we fix it up.
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     */
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    if (silo_ramdisk_image) {
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        silo_ramdisk_image += bootinfo.physmem_start;
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        silo_ramdisk_image -= 0x400000;
3399 jermar 99
        /* Install 1:1 mapping for the ramdisk. */
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        if (ofw_map((void *)((uintptr_t)silo_ramdisk_image),
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            (void *)((uintptr_t)silo_ramdisk_image),
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            silo_ramdisk_size, -1) != 0) {
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            printf("Failed to map ramdisk.\n");
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            halt();
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        }
3388 jermar 106
    }
1789 jermar 107
 
1899 jermar 108
    printf("\nSystem info\n");
1978 jermar 109
    printf(" memory: %dM starting at %P\n",
3388 jermar 110
        bootinfo.memmap.total >> 20, bootinfo.physmem_start);
1789 jermar 111
 
1685 decky 112
    printf("\nMemory statistics\n");
1789 jermar 113
    printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS);
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    printf(" %P: boot info structure\n", &bootinfo);
1685 decky 115
 
3399 jermar 116
    /*
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     * Figure out destination address for each component.
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     * In this phase, we don't copy the components yet because we want to
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     * to be careful not to overwrite anything, especially the components
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     * which haven't been copied yet.
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     */
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    bootinfo.taskmap.count = 0;
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    for (i = 0; i < COMPONENTS; i++) {
1978 jermar 124
        printf(" %P: %s image (size %d bytes)\n", components[i].start,
2250 jermar 125
            components[i].name, components[i].size);
3399 jermar 126
        top = ALIGN_UP(top, PAGE_SIZE);
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        if (i > 0) {
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            if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) {
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                printf("Skipping superfluous components.\n");
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                break;
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            }
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            bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
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                base + top;
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            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
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                components[i].size;
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            bootinfo.taskmap.count++;
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        }
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        top += components[i].size;
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    }
1782 jermar 140
 
3399 jermar 141
    j = bootinfo.taskmap.count - 1; /* do not consider ramdisk */
1894 jermar 142
 
3399 jermar 143
    if (silo_ramdisk_image) {
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        /* Treat the ramdisk as the last bootinfo task. */
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        if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) {
146
            printf("Skipping ramdisk.\n");
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            goto skip_ramdisk;
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        }
1685 decky 149
        top = ALIGN_UP(top, PAGE_SIZE);
3399 jermar 150
        bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
151
            base + top;
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        bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
153
            silo_ramdisk_size;
154
        bootinfo.taskmap.count++;
155
        printf("\nCopying ramdisk...");
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        /*
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         * Claim and map the whole ramdisk as it may exceed the area
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         * given to us by SILO.
159
         */
160
        (void) ofw_claim_phys(base + top, silo_ramdisk_size);
161
        (void) ofw_map(base + top, base + top, silo_ramdisk_size, -1);
162
        /*
163
         * FIXME If the source and destination overlap, it may be
164
         * desirable to copy in reverse order, depending on how the two
165
         * regions overlap.
166
         */
167
        memcpy(base + top, (void *)((uintptr_t)silo_ramdisk_image),
168
            silo_ramdisk_size);
169
        printf("done.\n");
170
        top += silo_ramdisk_size;
171
    }
172
skip_ramdisk:
2250 jermar 173
 
3399 jermar 174
    /*
175
     * Now we can proceed to copy the components. We do it in reverse order
176
     * so that we don't overwrite anything even if the components overlap
177
     * with base.
178
     */
179
    printf("\nCopying bootinfo tasks\n");
180
    for (i = COMPONENTS - 1; i > 0; i--, j--) {
181
        printf(" %s...", components[i].name);
182
 
2250 jermar 183
        /*
184
         * At this point, we claim the physical memory that we are
185
         * going to use. We should be safe in case of the virtual
186
         * address space because the OpenFirmware, according to its
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         * SPARC binding, should restrict its use of virtual memory
188
         * to addresses from [0xffd00000; 0xffefffff] and
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         * [0xfe000000; 0xfeffffff].
3399 jermar 190
         *
191
         * XXX We don't map this piece of memory. We simply rely on
192
         *     SILO to have it done for us already in this case.
2250 jermar 193
         */
3399 jermar 194
        (void) ofw_claim_phys(bootinfo.physmem_start +
195
            bootinfo.taskmap.tasks[j].addr,
2250 jermar 196
            ALIGN_UP(components[i].size, PAGE_SIZE));
197
 
3399 jermar 198
        memcpy((void *)bootinfo.taskmap.tasks[j].addr,
199
            components[i].start, components[i].size);
1685 decky 200
        printf("done.\n");
1018 decky 201
    }
1782 jermar 202
 
3399 jermar 203
    printf("\nCopying kernel...");
204
    (void) ofw_claim_phys(bootinfo.physmem_start + base,
205
        ALIGN_UP(components[0].size, PAGE_SIZE));
206
    memcpy(base, components[0].start, components[0].size);
207
    printf("done.\n");
208
 
2250 jermar 209
    /*
3399 jermar 210
     * Claim and map the physical memory for the boot allocator.
2250 jermar 211
     * Initialize the boot allocator.
212
     */
3399 jermar 213
    balloc_base = base + ALIGN_UP(top, PAGE_SIZE);
214
    (void) ofw_claim_phys(bootinfo.physmem_start + balloc_base,
215
        BALLOC_MAX_SIZE);
216
    (void) ofw_map(balloc_base, balloc_base, BALLOC_MAX_SIZE, -1);
217
    balloc_init(&bootinfo.ballocs, (uintptr_t)balloc_base);
1894 jermar 218
 
219
    printf("\nCanonizing OpenFirmware device tree...");
220
    bootinfo.ofw_root = ofw_tree_build();
221
    printf("done.\n");
222
 
1979 jermar 223
#ifdef CONFIG_SMP
1899 jermar 224
    printf("\nChecking for secondary processors...");
225
    if (!ofw_cpu())
1978 jermar 226
        printf("Error: unable to get CPU properties\n");
1899 jermar 227
    printf("done.\n");
1979 jermar 228
#endif
1899 jermar 229
 
1018 decky 230
    printf("\nBooting the kernel...\n");
1978 jermar 231
    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS,
2250 jermar 232
        bootinfo.physmem_start | BSP_PROCESSOR, &bootinfo,
233
        sizeof(bootinfo));
1018 decky 234
}
2250 jermar 235