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        halt();
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        halt();
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    }
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    }
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    printf("total memory %d MB\n", memmap.total >> 20);
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    printf("total memory %d MB\n", memmap.total >> 20);
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    // FIXME: map just the kernel
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    // FIXME: map just the kernel
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    if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 16 * 1024 * 1024, 0) != 0) {
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    if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 64 * 1024 * 1024, 0) != 0) {
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        printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);
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        printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS);
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        halt();
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        halt();
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    }
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    }
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    printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE);
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    printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS, KERNEL_PHYSICAL_ADDRESS, KERNEL_SIZE);
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    // FIXME: relocate the kernel in real mode
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    // FIXME: relocate the kernel in real mode
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    memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);
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    memcpy((void *) KERNEL_VIRTUAL_ADDRESS, KERNEL_START, KERNEL_SIZE);
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    // FIXME: proper framebuffer mapping
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    // FIXME: proper hardware detection & mapping
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    ofw_map((void *) 0x84000000, (void *) 0xf0000000, 2 * 1024 * 1024, 0);
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    ofw_map((void *) 0x84000000, (void *) 0xf0000000, 0x01000000, 0);
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    ofw_map((void *) 0x80816000, (void *) 0xf2000000, 0x00018000, 0);
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    printf("Booting the kernel...\n");
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    printf("Booting the kernel...\n");
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    flush_instruction_cache();
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    flush_instruction_cache();
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    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, ofw_translate(&memmap));
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    jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, ofw_translate(&memmap));