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Rev 3388 Rev 3399
Line 62... Line 62...
62
        release, revision, timestamp);
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        release, revision, timestamp);
63
}
63
}
64
 
64
 
65
void bootstrap(void)
65
void bootstrap(void)
66
{
66
{
-
 
67
    void *base = (void *) KERNEL_VIRTUAL_ADDRESS;
-
 
68
    void *balloc_base;
-
 
69
    unsigned int top = 0;
-
 
70
    int i, j;
-
 
71
 
67
    version_print();
72
    version_print();
68
   
73
   
69
    init_components(components);
74
    init_components(components);
70
 
75
 
71
    if (!ofw_get_physmem_start(&bootinfo.physmem_start)) {
76
    if (!ofw_get_physmem_start(&bootinfo.physmem_start)) {
Line 89... Line 94...
89
     * We just need plain physical address so we fix it up.
94
     * We just need plain physical address so we fix it up.
90
     */
95
     */
91
    if (silo_ramdisk_image) {
96
    if (silo_ramdisk_image) {
92
        silo_ramdisk_image += bootinfo.physmem_start;
97
        silo_ramdisk_image += bootinfo.physmem_start;
93
        silo_ramdisk_image -= 0x400000;
98
        silo_ramdisk_image -= 0x400000;
-
 
99
        /* Install 1:1 mapping for the ramdisk. */
-
 
100
        if (ofw_map((void *)((uintptr_t)silo_ramdisk_image),
-
 
101
            (void *)((uintptr_t)silo_ramdisk_image),
-
 
102
            silo_ramdisk_size, -1) != 0) {
-
 
103
            printf("Failed to map ramdisk.\n");
-
 
104
            halt();
-
 
105
        }
94
    }
106
    }
95
   
107
   
96
    printf("\nSystem info\n");
108
    printf("\nSystem info\n");
97
    printf(" memory: %dM starting at %P\n",
109
    printf(" memory: %dM starting at %P\n",
98
        bootinfo.memmap.total >> 20, bootinfo.physmem_start);
110
        bootinfo.memmap.total >> 20, bootinfo.physmem_start);
99
 
111
 
100
    printf("\nMemory statistics\n");
112
    printf("\nMemory statistics\n");
101
    printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS);
113
    printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS);
102
    printf(" %P: boot info structure\n", &bootinfo);
114
    printf(" %P: boot info structure\n", &bootinfo);
103
   
115
   
-
 
116
    /*
-
 
117
     * Figure out destination address for each component.
-
 
118
     * In this phase, we don't copy the components yet because we want to
-
 
119
     * to be careful not to overwrite anything, especially the components
-
 
120
     * which haven't been copied yet.
-
 
121
     */
104
    unsigned int i;
122
    bootinfo.taskmap.count = 0;
105
    for (i = 0; i < COMPONENTS; i++)
123
    for (i = 0; i < COMPONENTS; i++) {
106
        printf(" %P: %s image (size %d bytes)\n", components[i].start,
124
        printf(" %P: %s image (size %d bytes)\n", components[i].start,
107
            components[i].name, components[i].size);
125
            components[i].name, components[i].size);
-
 
126
        top = ALIGN_UP(top, PAGE_SIZE);
-
 
127
        if (i > 0) {
-
 
128
            if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) {
-
 
129
                printf("Skipping superfluous components.\n");
-
 
130
                break;
-
 
131
            }
-
 
132
            bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
-
 
133
                base + top;
-
 
134
            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
-
 
135
                components[i].size;
-
 
136
            bootinfo.taskmap.count++;
-
 
137
        }
-
 
138
        top += components[i].size;
-
 
139
    }
108
 
140
 
109
    void * base = (void *) KERNEL_VIRTUAL_ADDRESS;
141
    j = bootinfo.taskmap.count - 1; /* do not consider ramdisk */
110
    unsigned int top = 0;
-
 
111
 
142
 
112
    printf("\nCopying components\n");
143
    if (silo_ramdisk_image) {
-
 
144
        /* Treat the ramdisk as the last bootinfo task. */
113
    bootinfo.taskmap.count = 0;
145
        if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) {
114
    for (i = 0; i < COMPONENTS; i++) {
146
            printf("Skipping ramdisk.\n");
115
        printf(" %s...", components[i].name);
147
            goto skip_ramdisk;
-
 
148
        }
116
        top = ALIGN_UP(top, PAGE_SIZE);
149
        top = ALIGN_UP(top, PAGE_SIZE);
-
 
150
        bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
-
 
151
            base + top;
-
 
152
        bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
-
 
153
            silo_ramdisk_size;
-
 
154
        bootinfo.taskmap.count++;
-
 
155
        printf("\nCopying ramdisk...");
-
 
156
        /*
-
 
157
         * Claim and map the whole ramdisk as it may exceed the area
-
 
158
         * 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:
-
 
173
 
-
 
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);
117
 
182
 
118
        /*
183
        /*
119
         * At this point, we claim the physical memory that we are
184
         * At this point, we claim the physical memory that we are
120
         * going to use. We should be safe in case of the virtual
185
         * going to use. We should be safe in case of the virtual
121
         * address space because the OpenFirmware, according to its
186
         * address space because the OpenFirmware, according to its
122
         * SPARC binding, should restrict its use of virtual memory
187
         * SPARC binding, should restrict its use of virtual memory
123
         * to addresses from [0xffd00000; 0xffefffff] and
188
         * to addresses from [0xffd00000; 0xffefffff] and
124
         * [0xfe000000; 0xfeffffff].
189
         * [0xfe000000; 0xfeffffff].
-
 
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.
125
         */
193
         */
126
        (void) ofw_claim_phys(bootinfo.physmem_start + base + top,
194
        (void) ofw_claim_phys(bootinfo.physmem_start +
-
 
195
            bootinfo.taskmap.tasks[j].addr,
127
            ALIGN_UP(components[i].size, PAGE_SIZE));
196
            ALIGN_UP(components[i].size, PAGE_SIZE));
128
           
197
           
129
        memcpy(base + top, components[i].start, components[i].size);
-
 
130
        if (i > 0) {
-
 
131
            bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr =
198
        memcpy((void *)bootinfo.taskmap.tasks[j].addr,
132
                base + top;
-
 
133
            bootinfo.taskmap.tasks[bootinfo.taskmap.count].size =
-
 
134
                components[i].size;
199
            components[i].start, components[i].size);
135
            bootinfo.taskmap.count++;
-
 
136
        }
-
 
137
        top += components[i].size;
-
 
138
        printf("done.\n");
200
        printf("done.\n");
139
    }
201
    }
140
 
202
 
-
 
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
 
141
    /*
209
    /*
142
     * Claim the physical memory for the boot allocator.
210
     * Claim and map the physical memory for the boot allocator.
143
     * Initialize the boot allocator.
211
     * Initialize the boot allocator.
144
     */
212
     */
-
 
213
    balloc_base = base + ALIGN_UP(top, PAGE_SIZE);
145
    (void) ofw_claim_phys(bootinfo.physmem_start +
214
    (void) ofw_claim_phys(bootinfo.physmem_start + balloc_base,
-
 
215
        BALLOC_MAX_SIZE);
146
        base + ALIGN_UP(top, PAGE_SIZE), BALLOC_MAX_SIZE);
216
    (void) ofw_map(balloc_base, balloc_base, BALLOC_MAX_SIZE, -1);
147
    balloc_init(&bootinfo.ballocs, ALIGN_UP(((uintptr_t) base) + top,
217
    balloc_init(&bootinfo.ballocs, (uintptr_t)balloc_base);
148
        PAGE_SIZE));
-
 
149
 
218
 
150
    printf("\nCanonizing OpenFirmware device tree...");
219
    printf("\nCanonizing OpenFirmware device tree...");
151
    bootinfo.ofw_root = ofw_tree_build();
220
    bootinfo.ofw_root = ofw_tree_build();
152
    printf("done.\n");
221
    printf("done.\n");
153
 
222