NetBSD-5.0.2/sys/arch/ibmnws/ibmnws/machdep.c
/* $NetBSD: machdep.c,v 1.11 2008/06/14 12:01:28 mjf Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.11 2008/06/14 12:01:28 mjf Exp $");
#include "opt_compat_netbsd.h"
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/exec.h>
#include <sys/extent.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/mount.h>
#include <sys/msgbuf.h>
#include <sys/proc.h>
#include <sys/reboot.h>
#include <sys/syscallargs.h>
#include <sys/syslog.h>
#include <sys/systm.h>
#include <sys/user.h>
#include <uvm/uvm_extern.h>
#include <sys/sysctl.h>
#include <net/netisr.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/pmap.h>
#include <machine/powerpc.h>
#include <machine/trap.h>
#include <powerpc/oea/bat.h>
#include <arch/powerpc/pic/picvar.h>
#include <arch/powerpc/include/pio.h>
#include <dev/pci/pcivar.h>
#include <dev/ic/ibm82660reg.h>
#include <dev/cons.h>
void initppc(u_long, u_long, u_int, void *);
void dumpsys(void);
vaddr_t prep_intr_reg; /* PReP interrupt vector register */
#define OFMEMREGIONS 32
struct mem_region physmemr[OFMEMREGIONS], availmemr[OFMEMREGIONS];
paddr_t avail_end; /* XXX temporary */
struct pic_ops *isa_pic;
int isa_pcmciamask = 0x8b28;
void
initppc(u_long startkernel, u_long endkernel, u_int args, void *btinfo)
{
uint32_t sa, ea, banks;
u_long memsize = 0;
pcitag_t tag;
/*
* Set memory region by reading the memory size from the PCI
* host bridge.
*/
tag = genppc_pci_indirect_make_tag(NULL, 0, 0, 0);
out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK0_START);
sa = in32rb(PCI_MODE1_DATA_REG);
out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK0_END);
ea = in32rb(PCI_MODE1_DATA_REG);
/* Which memory banks are enabled? */
out32rb(PCI_MODE1_ADDRESS_REG, tag | IBM_82660_MEM_BANK_ENABLE);
banks = in32rb(PCI_MODE1_DATA_REG) & 0xFF;
/* Reset the register for the next call. */
out32rb(PCI_MODE1_ADDRESS_REG, 0);
if (banks & IBM_82660_MEM_BANK0_ENABLED)
memsize += IBM_82660_BANK0_ADDR(ea) - IBM_82660_BANK0_ADDR(sa) + 1;
if (banks & IBM_82660_MEM_BANK1_ENABLED)
memsize += IBM_82660_BANK1_ADDR(ea) - IBM_82660_BANK1_ADDR(sa) + 1;
if (banks & IBM_82660_MEM_BANK2_ENABLED)
memsize += IBM_82660_BANK2_ADDR(ea) - IBM_82660_BANK2_ADDR(sa) + 1;
if (banks & IBM_82660_MEM_BANK3_ENABLED)
memsize += IBM_82660_BANK3_ADDR(ea) - IBM_82660_BANK3_ADDR(sa) + 1;
memsize <<= 20;
physmemr[0].start = 0;
physmemr[0].size = memsize & ~PGOFSET;
availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
availmemr[0].size = memsize - availmemr[0].start;
avail_end = physmemr[0].start + physmemr[0].size; /* XXX temporary */
/*
* Set CPU clock
*/
{
extern u_long ticks_per_sec, ns_per_tick;
ticks_per_sec = 16666666; /* hardcoded */
ns_per_tick = 1000000000 / ticks_per_sec;
}
/*
* boothowto
*/
boothowto = 0; /* XXX - should make this an option */
prep_initppc(startkernel, endkernel, args);
}
/*
* Machine dependent startup code.
*/
void
cpu_startup(void)
{
/*
* Mapping PReP interrput vector register.
*/
prep_intr_reg = (vaddr_t) mapiodev(PREP_INTR_REG, PAGE_SIZE);
if (!prep_intr_reg)
panic("startup: no room for interrupt register");
prep_intr_reg_off = INTR_VECTOR_REG;
/*
* Do common startup.
*/
oea_startup("IBM NetworkStation 1000 (8362-XXX)");
pic_init();
isa_pic = setup_prepivr(PIC_IVR_IBM);
oea_install_extint(pic_ext_intr);
/*
* Now allow hardware interrupts.
*/
{
int msr;
splraise(-1);
__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
: "=r"(msr) : "K"(PSL_EE));
}
/*
* Now safe for bus space allocation to use malloc.
*/
bus_space_mallocok();
}
/*
* Halt or reboot the machine after syncing/dumping according to howto.
*/
void
cpu_reboot(int howto, char *what)
{
static int syncing;
if (cold) {
howto |= RB_HALT;
goto halt_sys;
}
boothowto = howto;
if ((howto & RB_NOSYNC) == 0 && syncing == 0) {
syncing = 1;
vfs_shutdown(); /* sync */
resettodr(); /* set wall clock */
}
/* Disable intr */
splhigh();
/* Do dump if requested */
if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
oea_dumpsys();
halt_sys:
doshutdownhooks();
if (howto & RB_HALT) {
printf("\n");
printf("The operating system has halted.\n");
printf("Please press any key to reboot.\n\n");
cnpollc(1); /* for proper keyboard command handling */
cngetc();
cnpollc(0);
}
printf("rebooting...\n\n");
{
int msr;
u_char reg;
__asm volatile("mfmsr %0" : "=r"(msr));
msr |= PSL_IP;
__asm volatile("mtmsr %0" :: "r"(msr));
reg = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92);
reg &= ~1UL;
*(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92) = reg;
__asm volatile("sync; eieio\n");
reg = *(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92);
reg |= 1;
*(volatile u_char *)(PREP_BUS_SPACE_IO + 0x92) = reg;
__asm volatile("sync; eieio\n");
}
for (;;)
continue;
/* NOTREACHED */
}