485 lines
12 KiB
C
485 lines
12 KiB
C
/* $NetBSD: integrator_machdep.c,v 1.74 2013/08/18 15:58:20 matt Exp $ */
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/*
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* Copyright (c) 2001,2002 ARM Ltd
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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. The name of the company may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD
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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 dependent functions for kernel setup for integrator board
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*
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* Created : 24/11/97
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.74 2013/08/18 15:58:20 matt Exp $");
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#include "opt_ddb.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 <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/intr.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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#include <machine/bootconfig.h>
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#include <arm/locore.h>
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#include <arm/undefined.h>
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#include <arm/arm32/machdep.h>
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#include <evbarm/integrator/integrator_boot.h>
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#include "pci.h"
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#include "ksyms.h"
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void ifpga_reset(void) __attribute__((noreturn));
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/*
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* The range 0xc1000000 - 0xccffffff is available for kernel VM space
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* Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
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*/
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#define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000)
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#define KERNEL_VM_SIZE 0x0C000000
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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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/* Prototypes */
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static void integrator_sdram_bounds (paddr_t *, psize_t *);
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void consinit(void);
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/* A load of console goo. */
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#include "vga.h"
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#if NVGA > 0
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#include <dev/ic/mc6845reg.h>
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#include <dev/ic/pcdisplayvar.h>
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#include <dev/ic/vgareg.h>
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#include <dev/ic/vgavar.h>
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#endif
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#include "pckbc.h"
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#if NPCKBC > 0
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#include <dev/ic/i8042reg.h>
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#include <dev/ic/pckbcvar.h>
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#endif
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#include "com.h"
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#if NCOM > 0
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#ifndef CONCOMADDR
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#define CONCOMADDR 0x3f8
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#endif
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#endif
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/*
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* Define the default console speed for the board. This is generally
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* what the firmware provided with the board defaults to.
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*/
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#ifndef CONSPEED
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#define CONSPEED B115200
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#endif
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#ifndef CONMODE
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#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
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#endif
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int comcnspeed = CONSPEED;
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int comcnmode = CONMODE;
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#include "plcom.h"
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#if (NPLCOM > 0)
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#include <evbarm/dev/plcomreg.h>
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#include <evbarm/dev/plcomvar.h>
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#include <evbarm/ifpga/ifpgamem.h>
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#include <evbarm/ifpga/ifpgareg.h>
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#include <evbarm/ifpga/ifpgavar.h>
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#endif
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#ifndef CONSDEVNAME
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#define CONSDEVNAME "plcom"
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#endif
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#ifndef PLCONSPEED
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#define PLCONSPEED B38400
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#endif
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#ifndef PLCONMODE
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#define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
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#endif
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#ifndef PLCOMCNUNIT
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#define PLCOMCNUNIT -1
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#endif
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int plcomcnspeed = PLCONSPEED;
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int plcomcnmode = PLCONMODE;
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#if 0
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extern struct consdev kcomcons;
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static void kcomcnputc(dev_t, int);
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#endif
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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("The operating system has halted.\n");
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printf("Please press any key to reboot.\n\n");
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cngetc();
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printf("rebooting...\n");
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ifpga_reset();
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/*NOTREACHED*/
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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("The operating system has halted.\n");
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printf("Please press any key to reboot.\n\n");
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cngetc();
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}
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printf("rebooting...\n");
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ifpga_reset();
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/*NOTREACHED*/
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}
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/* Statically mapped devices. */
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static const struct pmap_devmap integrator_devmap[] = {
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#if NPLCOM > 0 && defined(PLCONSOLE)
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{
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UART0_BOOT_BASE,
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IFPGA_IO_BASE + IFPGA_UART0,
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1024 * 1024,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE
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},
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{
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UART1_BOOT_BASE,
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IFPGA_IO_BASE + IFPGA_UART1,
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1024 * 1024,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE
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},
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#endif
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#if NPCI > 0
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{
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IFPGA_PCI_IO_VBASE,
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IFPGA_PCI_IO_BASE,
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IFPGA_PCI_IO_VSIZE,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE
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},
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{
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IFPGA_PCI_CONF_VBASE,
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IFPGA_PCI_CONF_BASE,
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IFPGA_PCI_CONF_VSIZE,
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VM_PROT_READ|VM_PROT_WRITE,
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PTE_NOCACHE
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},
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#endif
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{
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0,
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0,
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0,
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0,
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0
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}
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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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* Relocating the kernel to the bottom of physical memory
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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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extern int KERNEL_BASE_phys[];
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paddr_t memstart;
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psize_t memsize;
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/*
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* Heads up ... Setup the CPU / MMU / TLB functions
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*/
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if (set_cpufuncs())
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panic("cpu not recognized!");
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/* map some peripheral registers */
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pmap_devmap_bootstrap((vaddr_t)armreg_ttbr_read() & -L1_TABLE_SIZE,
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integrator_devmap);
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cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
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consinit();
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/* Talk to the user */
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#define BDSTR(s) _BDSTR(s)
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#define _BDSTR(s) #s
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printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n");
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/*
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* Fetch the SDRAM start/size from the CM configuration registers.
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*/
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integrator_sdram_bounds(&memstart, &memsize);
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#if defined(INTEGRATOR_CP)
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/*
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* XXX QEMU reports SDRAM starting at 0x100000, but presents a flat
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* physical memory model. Set memstart to 0x0, so arm32_bootmem_init
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* doesn't get fooled later.
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*/
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memstart = 0;
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#endif
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#ifdef VERBOSE_INIT_ARM
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printf("initarm: Configuring system ...\n");
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#endif
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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 = memstart;
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bootconfig.dram[0].pages = memsize / PAGE_SIZE;
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bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA | BOOT_DRAM_PREFER;
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arm32_bootmem_init(bootconfig.dram[0].address,
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bootconfig.dram[0].pages * PAGE_SIZE, (unsigned int) KERNEL_BASE_phys);
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arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_LOW, 0, integrator_devmap,
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false);
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#ifdef VERBOSE_INIT_ARM
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printf("done.\n");
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#endif
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return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);
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}
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void
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consinit(void)
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{
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static int consinit_called = 0;
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#if 0
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char *console = CONSDEVNAME;
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#endif
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if (consinit_called != 0)
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return;
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consinit_called = 1;
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#if NPLCOM > 0 && defined(PLCONSOLE)
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if (PLCOMCNUNIT == 0) {
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extern struct bus_space ifpga_common_bs_tag;
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static struct plcom_instance ifpga_pi1 = {
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#if defined(INTEGRATOR_CP)
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.pi_type = PLCOM_TYPE_PL011,
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#else
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.pi_type = PLCOM_TYPE_PL010,
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#endif
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.pi_iot = &ifpga_common_bs_tag,
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.pi_size = IFPGA_UART_SIZE,
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.pi_iobase = IFPGA_UART0
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};
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if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK,
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plcomcnmode, PLCOMCNUNIT))
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panic("can't init serial console");
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return;
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} else if (PLCOMCNUNIT == 1) {
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extern struct bus_space ifpga_common_bs_tag;
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static struct plcom_instance ifpga_pi1 = {
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#if defined(INTEGRATOR_CP)
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.pi_type = PLCOM_TYPE_PL011,
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#else
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.pi_type = PLCOM_TYPE_PL010,
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#endif
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.pi_iot = &ifpga_common_bs_tag,
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.pi_size = IFPGA_UART_SIZE,
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.pi_iobase = IFPGA_UART1
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};
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if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK,
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plcomcnmode, PLCOMCNUNIT))
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panic("can't init serial console");
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return;
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}
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#endif
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#if (NCOM > 0)
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if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed,
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COM_FREQ, COM_TYPE_NORMAL, comcnmode))
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panic("can't init serial console @%x", CONCOMADDR);
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return;
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#endif
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panic("No serial console configured");
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}
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static void
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integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize)
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{
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volatile unsigned long *cm_sdram
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= (volatile unsigned long *)0x10000020;
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volatile unsigned long *cm_stat
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= (volatile unsigned long *)0x10000010;
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*memstart = *cm_stat & 0x00ff0000;
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/*
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* Although the SSRAM overlaps the SDRAM, we can use the wrap-around
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* to access the entire bank.
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*/
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switch ((*cm_sdram >> 2) & 0x7)
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{
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case 0:
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*memsize = 16 * 1024 * 1024;
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break;
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case 1:
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*memsize = 32 * 1024 * 1024;
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break;
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case 2:
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*memsize = 64 * 1024 * 1024;
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break;
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case 3:
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*memsize = 128 * 1024 * 1024;
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break;
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case 4:
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/* With 256M of memory there is no wrap-around. */
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*memsize = 256 * 1024 * 1024 - *memstart;
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break;
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default:
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printf("CM_SDRAM retuns unknown value, using 16M\n");
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*memsize = 16 * 1024 * 1024;
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break;
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}
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}
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