94d985722a
doshutdownhooks(9): shutdown hooks registered by shutdownhook_establish(9) expect to be called with interrupts disabled, but shutdown hooks registered with pmf_device_register1(9) expect to be called with interrupts enabled. So I have made two changes: 1 Do not call pmf_system_shutdown() from doshutdownhooks(). Instead, change every call to doshutdownhooks() to a call to doshutdownhooks() followed by a call to pmf_system_shutdown(). No functional change is intended by this change. 2 Make i386 re-enable interrupts briefly while it calls pmf_system_shutdown(). I leave it to others either to fix the other ports, or to factor out some MI shutdown code, as joerg@ suggests, and fix that. Note that a functional change *is* intended by this change. I hope that this patch will stop us from flip-flopping between calling doshutdownhooks() and pmf_system_shutdown() sometimes with and sometimes without interrupts enabled.
397 lines
11 KiB
C
397 lines
11 KiB
C
/* $Id: mpcsa_machdep.c,v 1.3 2008/11/11 06:46:41 dyoung Exp $ */
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/* $NetBSD: mpcsa_machdep.c,v 1.3 2008/11/11 06:46:41 dyoung Exp $ */
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/*
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* Copyright (c) 2007 Embedtronics Oy
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* Based on tsarm_machdep.c
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*
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* Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Based on code written by Jason R. Thorpe and Steve C. Woodford for
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* Wasabi Systems, Inc.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997,1998 Mark Brinicombe.
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* Copyright (c) 1997,1998 Causality Limited.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe
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* for the NetBSD Project.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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* Machine dependant functions for kernel setup for Iyonix.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mpcsa_machdep.c,v 1.3 2008/11/11 06:46:41 dyoung Exp $");
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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#include "opt_pmap_debug.h"
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/exec.h>
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#include <sys/proc.h>
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#include <sys/msgbuf.h>
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#include <sys/reboot.h>
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#include <sys/termios.h>
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#include <sys/ksyms.h>
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#include <uvm/uvm_extern.h>
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#include <dev/cons.h>
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#include <machine/db_machdep.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_extern.h>
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#define DRAM_BLOCKS 1
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#include <machine/bootconfig.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/frame.h>
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#include <arm/undefined.h>
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#include <arm/arm32/machdep.h>
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#include <arm/at91/at91reg.h>
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#include <arm/at91/at91var.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <machine/autoconf.h>
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#include "seeprom.h"
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#if NSEEPROM > 0
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#include <net/if.h>
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#include <net/if_ether.h>
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#include <dev/i2c/i2cvar.h>
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#include <dev/i2c/at24cxxvar.h>
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#endif
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#include <arm/at91/at91twivar.h>
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#if TODO
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#include "epcom.h"
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#if NEPCOM > 0
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#include <arm/ep93xx/epcomvar.h>
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#endif
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#include "isa.h"
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#if NISA > 0
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#endif
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#include <machine/isa_machdep.h>
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#include <evbarm/mpcsa/mpcsareg.h>
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#endif // TODO
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#include <arm/at91/at91rm9200reg.h>
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#include <arm/at91/at91rm9200busvar.h>
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#include "opt_ipkdb.h"
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#include "ksyms.h"
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#include <arm/at91/at91busvar.h>
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#include <arm/at91/at91pdcreg.h>
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#include <arm/at91/at91dbgureg.h>
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#include <arm/at91/at91reg.h>
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#include <arm/at91/at91streg.h>
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/*
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* Address to call from cpu_reset() to reset the machine.
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* This is machine architecture dependant as it varies depending
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* on where the ROM appears when you turn the MMU off.
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*/
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u_int cpu_reset_address = 0x00000000;
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/* boot configuration: */
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BootConfig bootconfig; /* Boot config storage */
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char *boot_args = NULL;
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char *boot_file = NULL;
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/* hmmm */
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static struct arm32_dma_range mpcsa_dma_ranges[4];
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static struct at91bus_machdep mpcsabus;
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static at91bus_tag_t old_at91bus_tag;
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/* Prototypes */
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static void mpcsa_device_register(device_t dev, void *aux);
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static void mpcsabus_init(struct at91bus_clocks *);
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static void mpcsabus_peripheral_clock(int pid, int enable);
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static uint32_t mpcsabus_gpio_mask(int pid);
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/*
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* void cpu_reboot(int howto, char *bootstr)
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*
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* Reboots the system
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*
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* Deal with any syncing, unmounting, dumping and shutdown hooks,
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* then reset the CPU.
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*/
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void
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cpu_reboot(int howto, char *bootstr)
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{
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/*
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* If we are still cold then hit the air brakes
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* and crash to earth fast
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*/
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if (cold) {
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doshutdownhooks();
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pmf_system_shutdown(boothowto);
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printf("\r\n");
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printf("The operating system has halted.\r\n");
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printf("Please press any key to reboot.\r\n");
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cngetc();
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printf("\r\nrebooting...\r\n");
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goto reset;
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}
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/* Disable console buffering */
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/*
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* If RB_NOSYNC was not specified sync the discs.
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* Note: Unless cold is set to 1 here, syslogd will die during the
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* unmount. It looks like syslogd is getting woken up only to find
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* that it cannot page part of the binary in as the filesystem has
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* been unmounted.
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*/
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if (!(howto & RB_NOSYNC))
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bootsync();
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/* Say NO to interrupts */
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splhigh();
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/* Do a dump if requested. */
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if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
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dumpsys();
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/* Run any shutdown hooks */
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doshutdownhooks();
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pmf_system_shutdown(boothowto);
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/* Make sure IRQ's are disabled */
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IRQdisable;
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if (howto & RB_HALT) {
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printf("\r\n");
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printf("The operating system has halted.\r\n");
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printf("Please press any key to reboot.\r\n");
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cngetc();
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}
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printf("\r\nrebooting...\r\n");
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reset:
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/*
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* Make really really sure that all interrupts are disabled,
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* and poke the Internal Bus and Peripheral Bus reset lines.
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*/
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(void) disable_interrupts(I32_bit|F32_bit);
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STREG(ST_WDMR) = ST_WDMR_EXTEN | ST_WDMR_RSTEN | 1;
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STREG(ST_CR) = ST_CR_WDRST;
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for (;;);
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}
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/*
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* u_int initarm(...)
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*
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* Initial entry point on startup. This gets called before main() is
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* entered.
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* It should be responsible for setting up everything that must be
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* in place when main is called.
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* This includes
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* Taking a copy of the boot configuration structure.
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* Initialising the physical console so characters can be printed.
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* Setting up page tables for the kernel
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* Initialising interrupt controllers to a sane default state
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*/
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u_int
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initarm(void *arg)
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{
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u_int ret;
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/*
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* basic AT91 initialization:
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*/
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if (at91bus_init())
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panic("%s: at91bus_init() failed", __FUNCTION__);
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if (AT91_CHIP_ID() == AT91RM9200_CHIP_ID) {
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memcpy(&mpcsabus, at91bus_tag, sizeof(mpcsabus));
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mpcsabus.init = mpcsabus_init;
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mpcsabus.peripheral_clock = mpcsabus_peripheral_clock;
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mpcsabus.gpio_mask = mpcsabus_gpio_mask;
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old_at91bus_tag = at91bus_tag;
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at91bus_tag = &mpcsabus;
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}
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/* Fake bootconfig structure for the benefit of pmap.c */
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/* XXX must make the memory description h/w independent */
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bootconfig.dramblocks = 1;
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bootconfig.dram[0].address = 0x20000000UL;
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bootconfig.dram[0].pages = 0x04000000UL / PAGE_SIZE;
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ret = at91bus_setup(&bootconfig);
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if (AT91_CHIP_ID() != AT91RM9200_CHIP_ID)
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panic("%s: processor is not AT91RM9200", __FUNCTION__);
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/* we've a specific device_register routine */
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evbarm_device_register = mpcsa_device_register;
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/* We return the new stack pointer address */
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return ret;
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}
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bus_dma_tag_t
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at91_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template)
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{
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int i;
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struct arm32_bus_dma_tag *dmat;
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for (i = 0; i < bootconfig.dramblocks; i++) {
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mpcsa_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address;
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mpcsa_dma_ranges[i].dr_busbase = bootconfig.dram[i].address;
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mpcsa_dma_ranges[i].dr_len = bootconfig.dram[i].pages *
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PAGE_SIZE;
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}
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dmat = dma_tag_template;
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dmat->_ranges = mpcsa_dma_ranges;
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dmat->_nranges = bootconfig.dramblocks;
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return dmat;
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}
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void mpcsabus_init(struct at91bus_clocks *clocks)
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{
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(*old_at91bus_tag->init)(clocks);
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}
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uint32_t mpcsabus_gpio_mask(int pid)
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{
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switch (pid) {
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case PID_PIOA: return ~0x00000300U;
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case PID_PIOB: return ~0x0000783FU;
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case PID_PIOC: return ~0x00000000U;
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case PID_PIOD: return ~0x0003F000U;
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default: return ~0x00000000U;
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}
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}
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void mpcsabus_peripheral_clock(int pid, int enable)
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{
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switch (pid) {
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case PID_TWI:
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if (enable) {
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PIOA_WRITE(PIO_ASR, 0x06000000); // assign to peripheral A
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PIOA_WRITE(PIO_PDR, 0x06000000); // assign to peripherals
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PIOA_WRITE(PIO_MDER, 0x06000000); // I2C pins in open-drain mode
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}
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break;
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case PID_SPI:
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if (enable) {
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PIOA_WRITE(PIO_ASR, 0x00000007); // assign to peripheral A
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PIOA_WRITE(PIO_PDR, 0x00000007); // assign to peripherals
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}
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break;
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}
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(*old_at91bus_tag->peripheral_clock)(pid, enable);
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}
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static void mpcsa_device_register(device_t dev, void *aux)
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{
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static uint8_t eth_addr[ETHER_ADDR_LEN];
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if (device_is_a(dev, "at91emac")) {
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cfdriver_t cd = config_cfdriver_lookup("at91twi");
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device_t twi_dev = 0;
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i2c_tag_t i2c = 0;
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if (cd && (twi_dev = device_lookup(cd, 0)) != NULL) {
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struct at91twi_softc *sc = (struct at91twi_softc *)twi_dev;
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i2c = &sc->sc_i2c;
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}
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if (i2c && seeprom_bootstrap_read(i2c, 0x50, 0x00, 4096,
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eth_addr, ETHER_ADDR_LEN) == 0) {
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prop_data_t pd = prop_data_create_data_nocopy(
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eth_addr, ETHER_ADDR_LEN);
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KASSERT(pd != NULL);
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if (prop_dictionary_set(device_properties(dev),
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"mac-addr", pd) == FALSE) {
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printf("WARNING: unable to set mac-addr property "
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"for %s\n", dev->dv_xname);
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}
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} else {
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printf("%s: WARNING: unable to read MAC address from SEEPROM\n",
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dev->dv_xname);
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}
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}
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}
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