scoutos / prex-0.9.0 / bsp / boot / common / main.c @ 03e9c04a
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/*-
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* Copyright (c) 2005-2009, Kohsuke Ohtani
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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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* 1. 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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* 2. 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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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* main.c - Boot loader main module.
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*/
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#include <boot.h> |
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#include <machdep.h> |
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#include <sys/bootinfo.h> |
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#include "load.h" |
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typedef void (*entry_t)(void); |
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/*
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* Loader main routine
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*
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* We assume that the following machine state has
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* been already set before this routine.
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* - CPU is initialized.
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* - DRAM is configured.
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* - Loader BSS section is filled with 0.
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* - Loader stack is configured.
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* - All interrupts are disabled.
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*/
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int
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main(void)
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{ |
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entry_t entry; |
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memset(bootinfo, 0, BOOTINFOSZ);
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/*
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* Initialize debug port.
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*/
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debug_init(); |
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DPRINTF(("Prex Boot Loader\n"));
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/*
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* Do platform dependent initialization.
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*/
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startup(); |
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/*
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* Show splash screen.
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*/
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splash(); |
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/*
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* Load OS modules to appropriate locations.
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*/
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load_os(); |
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/*
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* Dump boot infomation for debug.
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*/
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dump_bootinfo(); |
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/*
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* Launch kernel.
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*/
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entry = (entry_t)kvtop(bootinfo->kernel.entry); |
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DPRINTF(("Entering kernel (at 0x%lx) ...\n\n", (long)entry)); |
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(*entry)(); |
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panic("Oops!");
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/* NOTREACHED */
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return 0; |
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} |
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/*
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* panic - show error message and hang up.
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*/
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void
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panic(const char *msg) |
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{ |
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DPRINTF(("Panic: %s\n", msg));
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for (;;) ;
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/* NOTREACHED */
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} |