/*
* Copyright (C) 2005 Martin Decky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "main.h"
#include "printf.h"
#include "asm.h"
#define KERNEL_PHYSICAL_ADDRESS 0x2000
#define KERNEL_VIRTUAL_ADDRESS 0x80002000
#define KERNEL_START &_binary_____________kernel_kernel_bin_start
#define KERNEL_END &_binary_____________kernel_kernel_bin_end
#define KERNEL_SIZE ((unsigned int) KERNEL_END - (unsigned int) KERNEL_START)
memmap_t memmap;
void bootstrap(void)
{
printf("\nHelenOS PPC Bootloader\n");
void *phys = ofw_translate(&start);
printf("loaded at %L (physical %L)\n", &start
, phys
);
if (!ofw_memmap(&memmap)) {
printf("Unable to get memory map\n"); halt();
}
printf("total memory %d MB\n", memmap.
total >> 20);
// FIXME: map just the kernel
if (ofw_map((void *) KERNEL_PHYSICAL_ADDRESS, (void *) KERNEL_VIRTUAL_ADDRESS, memmap.total - 16 * 1024 * 1024, 0) != 0) {
printf("Unable to map kernel memory at %L (physical %L)\n", KERNEL_VIRTUAL_ADDRESS
, KERNEL_PHYSICAL_ADDRESS
); halt();
}
printf("kernel memory mapped at %L (physical %L, size %d bytes)\n", KERNEL_VIRTUAL_ADDRESS
, KERNEL_PHYSICAL_ADDRESS
, KERNEL_SIZE
); // FIXME: relocate the kernel in real mode
memcpy((void *) KERNEL_VIRTUAL_ADDRESS
, KERNEL_START
, KERNEL_SIZE
);
// FIXME: proper framebuffer mapping
ofw_map((void *) 0x84000000, (void *) 0xf0000000, 2 * 1024 * 1024, 0);
printf("Booting the kernel...\n");
flush_instruction_cache();
jump_to_kernel((void *) KERNEL_VIRTUAL_ADDRESS, ofw_translate(&memmap));
}