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/*
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 * Copyright (C) 2005 Martin Decky
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 * 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"
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#include "printf.h"
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#include "asm.h"
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#define KERNEL_PHYSICAL_ADDRESS 0x1000
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#define KERNEL_VIRTUAL_ADDRESS 0x80001000
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#define KERNEL_START &_binary_____________kernel_kernel_bin_start
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#define KERNEL_END &_binary_____________kernel_kernel_bin_end
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#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)
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memmap_t memmap;
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void bootstrap(void)
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{
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    printf("\nHelenOS PPC Bootloader\n");
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    void *phys = ofw_translate(&start);
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    printf("loaded at %L (physical %L)\n", &start, phys);
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    if (!ofw_memmap(&memmap)) {
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        printf("Unable to get memory map\n");
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        halt();
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    }
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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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    if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 16 * 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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        halt();
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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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    // FIXME: relocate the kernel in real mode
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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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    ofw_map((void *) 0x84000000, (void *) 0xf0000000, 2 * 1024 * 1024, 0);
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    printf("Booting the kernel...\n");
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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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}