scoutos / prex-0.9.0 / bsp / hal / ppc / prep / machdep.c @ 03e9c04a
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/*-
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* Copyright (c) 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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* machdep.c - machine-dependent routines for PPC PReP
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*/
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#include <machine/syspage.h> |
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#include <sys/power.h> |
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#include <sys/bootinfo.h> |
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#include <kernel.h> |
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#include <page.h> |
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#include <mmu.h> |
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#include <cpu.h> |
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#include <io.h> |
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#include <cpufunc.h> |
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#include <locore.h> |
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extern void *exception_vector; |
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extern void *exception_vector_end; |
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#ifdef CONFIG_MMU
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/*
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* Virtual and physical address mapping
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*
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* { virtual, physical, size, type }
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*/
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struct mmumap mmumap_table[] =
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{ |
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/*
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* Physical memory
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*/
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{ 0x80000000, 0x00000000, 0x9000000, VMT_RAM }, |
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/*
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* ISA I/O space
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*/
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{ 0xf0000000, 0x80000000, 0xf000, VMT_IO }, |
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{ 0,0,0,0 } |
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}; |
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#endif
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/*
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* Idle
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*/
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void
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machine_idle(void)
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{ |
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cpu_idle(); |
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} |
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/*
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* Cause PReP machine reset.
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*/
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static void |
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machine_reset(void)
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{ |
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u_char val; |
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val = inb(0x92);
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val &= ~1UL;
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outb(0x92, val);
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val = inb(0x92);
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val |= 1;
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outb(0x92, val);
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/* NOTREACHED */
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} |
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/*
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* Set system power
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*/
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void
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machine_powerdown(int state)
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{ |
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DPRINTF(("Power down machine\n"));
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splhigh(); |
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switch (state) {
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case PWR_SUSPEND:
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case PWR_OFF:
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for (;;)
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cpu_idle(); |
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/* NOTREACHED */
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break;
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case PWR_REBOOT:
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machine_reset(); |
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/* NOTREACHED */
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break;
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} |
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} |
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/*
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* Return pointer to the boot information.
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*/
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void
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machine_bootinfo(struct bootinfo **bip)
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{ |
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*bip = (struct bootinfo *)BOOTINFO;
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} |
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void
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machine_abort(void)
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{ |
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for (;;) ;
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} |
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/*
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* Machine-dependent startup code
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*/
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void
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machine_startup(void)
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{ |
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void *vector_offset = 0; |
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/*
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* Reserve system pages.
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*/
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page_reserve(kvtop(SYSPAGE), SYSPAGESZ); |
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/*
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* Copy exception vectors.
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*/
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memcpy(vector_offset, &exception_vector, 0x3000);
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#ifdef CONFIG_MMU
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/*
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* Initialize MMU
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*/
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mmu_init(mmumap_table); |
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#endif
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} |