| 64,6 → 64,11 |
|---|
| |
| void bootstrap(void) |
| { |
| void *base = (void *) KERNEL_VIRTUAL_ADDRESS; |
| void *balloc_base; |
| unsigned int top = 0; |
| int i, j; |
| |
| version_print(); |
| |
| init_components(components); |
| 91,6 → 96,13 |
|---|
| if (silo_ramdisk_image) { |
| silo_ramdisk_image += bootinfo.physmem_start; |
| silo_ramdisk_image -= 0x400000; |
| /* Install 1:1 mapping for the ramdisk. */ |
| if (ofw_map((void *)((uintptr_t)silo_ramdisk_image), |
| (void *)((uintptr_t)silo_ramdisk_image), |
| silo_ramdisk_size, -1) != 0) { |
| printf("Failed to map ramdisk.\n"); |
| halt(); |
| } |
| } |
| |
| printf("\nSystem info\n"); |
| 101,20 → 113,73 |
|---|
| printf(" kernel entry point at %P\n", KERNEL_VIRTUAL_ADDRESS); |
| printf(" %P: boot info structure\n", &bootinfo); |
| |
| unsigned int i; |
| for (i = 0; i < COMPONENTS; i++) |
| /* |
| * Figure out destination address for each component. |
| * In this phase, we don't copy the components yet because we want to |
| * to be careful not to overwrite anything, especially the components |
| * which haven't been copied yet. |
| */ |
| bootinfo.taskmap.count = 0; |
| for (i = 0; i < COMPONENTS; i++) { |
| printf(" %P: %s image (size %d bytes)\n", components[i].start, |
| components[i].name, components[i].size); |
| top = ALIGN_UP(top, PAGE_SIZE); |
| if (i > 0) { |
| if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) { |
| printf("Skipping superfluous components.\n"); |
| break; |
| } |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = |
| base + top; |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = |
| components[i].size; |
| bootinfo.taskmap.count++; |
| } |
| top += components[i].size; |
| } |
| |
| void * base = (void *) KERNEL_VIRTUAL_ADDRESS; |
| unsigned int top = 0; |
| j = bootinfo.taskmap.count - 1; /* do not consider ramdisk */ |
| |
| printf("\nCopying components\n"); |
| bootinfo.taskmap.count = 0; |
| for (i = 0; i < COMPONENTS; i++) { |
| printf(" %s...", components[i].name); |
| if (silo_ramdisk_image) { |
| /* Treat the ramdisk as the last bootinfo task. */ |
| if (bootinfo.taskmap.count == TASKMAP_MAX_RECORDS) { |
| printf("Skipping ramdisk.\n"); |
| goto skip_ramdisk; |
| } |
| top = ALIGN_UP(top, PAGE_SIZE); |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = |
| base + top; |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = |
| silo_ramdisk_size; |
| bootinfo.taskmap.count++; |
| printf("\nCopying ramdisk..."); |
| /* |
| * Claim and map the whole ramdisk as it may exceed the area |
| * given to us by SILO. |
| */ |
| (void) ofw_claim_phys(base + top, silo_ramdisk_size); |
| (void) ofw_map(base + top, base + top, silo_ramdisk_size, -1); |
| /* |
| * FIXME If the source and destination overlap, it may be |
| * desirable to copy in reverse order, depending on how the two |
| * regions overlap. |
| */ |
| memcpy(base + top, (void *)((uintptr_t)silo_ramdisk_image), |
| silo_ramdisk_size); |
| printf("done.\n"); |
| top += silo_ramdisk_size; |
| } |
| skip_ramdisk: |
| |
| /* |
| * Now we can proceed to copy the components. We do it in reverse order |
| * so that we don't overwrite anything even if the components overlap |
| * with base. |
| */ |
| printf("\nCopying bootinfo tasks\n"); |
| for (i = COMPONENTS - 1; i > 0; i--, j--) { |
| printf(" %s...", components[i].name); |
| |
| /* |
| * At this point, we claim the physical memory that we are |
| * going to use. We should be safe in case of the virtual |
| 122,30 → 187,34 |
|---|
| * SPARC binding, should restrict its use of virtual memory |
| * to addresses from [0xffd00000; 0xffefffff] and |
| * [0xfe000000; 0xfeffffff]. |
| * |
| * XXX We don't map this piece of memory. We simply rely on |
| * SILO to have it done for us already in this case. |
| */ |
| (void) ofw_claim_phys(bootinfo.physmem_start + base + top, |
| (void) ofw_claim_phys(bootinfo.physmem_start + |
| bootinfo.taskmap.tasks[j].addr, |
| ALIGN_UP(components[i].size, PAGE_SIZE)); |
| |
| memcpy(base + top, components[i].start, components[i].size); |
| if (i > 0) { |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].addr = |
| base + top; |
| bootinfo.taskmap.tasks[bootinfo.taskmap.count].size = |
| components[i].size; |
| bootinfo.taskmap.count++; |
| } |
| top += components[i].size; |
| memcpy((void *)bootinfo.taskmap.tasks[j].addr, |
| components[i].start, components[i].size); |
| printf("done.\n"); |
| } |
| |
| printf("\nCopying kernel..."); |
| (void) ofw_claim_phys(bootinfo.physmem_start + base, |
| ALIGN_UP(components[0].size, PAGE_SIZE)); |
| memcpy(base, components[0].start, components[0].size); |
| printf("done.\n"); |
| |
| /* |
| * Claim the physical memory for the boot allocator. |
| * Claim and map the physical memory for the boot allocator. |
| * Initialize the boot allocator. |
| */ |
| (void) ofw_claim_phys(bootinfo.physmem_start + |
| base + ALIGN_UP(top, PAGE_SIZE), BALLOC_MAX_SIZE); |
| balloc_init(&bootinfo.ballocs, ALIGN_UP(((uintptr_t) base) + top, |
| PAGE_SIZE)); |
| balloc_base = base + ALIGN_UP(top, PAGE_SIZE); |
| (void) ofw_claim_phys(bootinfo.physmem_start + balloc_base, |
| BALLOC_MAX_SIZE); |
| (void) ofw_map(balloc_base, balloc_base, BALLOC_MAX_SIZE, -1); |
| balloc_init(&bootinfo.ballocs, (uintptr_t)balloc_base); |
| |
| printf("\nCanonizing OpenFirmware device tree..."); |
| bootinfo.ofw_root = ofw_tree_build(); |