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integrator_machdep.c revision 1.57.10.3
      1  1.57.10.3      yamt /*	$NetBSD: integrator_machdep.c,v 1.57.10.3 2009/08/19 18:46:07 yamt Exp $	*/
      2        1.1  rearnsha 
      3        1.1  rearnsha /*
      4       1.23  rearnsha  * Copyright (c) 2001,2002 ARM Ltd
      5        1.1  rearnsha  * All rights reserved.
      6        1.1  rearnsha  *
      7        1.1  rearnsha  * Redistribution and use in source and binary forms, with or without
      8        1.1  rearnsha  * modification, are permitted provided that the following conditions
      9        1.1  rearnsha  * are met:
     10        1.1  rearnsha  * 1. Redistributions of source code must retain the above copyright
     11        1.1  rearnsha  *    notice, this list of conditions and the following disclaimer.
     12        1.1  rearnsha  * 2. Redistributions in binary form must reproduce the above copyright
     13        1.1  rearnsha  *    notice, this list of conditions and the following disclaimer in the
     14        1.1  rearnsha  *    documentation and/or other materials provided with the distribution.
     15        1.1  rearnsha  * 3. The name of the company may not be used to endorse or promote
     16        1.1  rearnsha  *    products derived from this software without specific prior written
     17        1.1  rearnsha  *    permission.
     18        1.1  rearnsha  *
     19       1.23  rearnsha  * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND
     20       1.23  rearnsha  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21       1.23  rearnsha  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22       1.23  rearnsha  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ARM LTD
     23       1.23  rearnsha  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24       1.23  rearnsha  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25       1.23  rearnsha  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26       1.23  rearnsha  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27       1.23  rearnsha  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28       1.23  rearnsha  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29       1.23  rearnsha  * POSSIBILITY OF SUCH DAMAGE.
     30       1.23  rearnsha  */
     31       1.23  rearnsha 
     32       1.23  rearnsha /*
     33        1.1  rearnsha  * Copyright (c) 1997,1998 Mark Brinicombe.
     34        1.1  rearnsha  * Copyright (c) 1997,1998 Causality Limited.
     35        1.1  rearnsha  * All rights reserved.
     36        1.1  rearnsha  *
     37        1.1  rearnsha  * Redistribution and use in source and binary forms, with or without
     38        1.1  rearnsha  * modification, are permitted provided that the following conditions
     39        1.1  rearnsha  * are met:
     40        1.1  rearnsha  * 1. Redistributions of source code must retain the above copyright
     41        1.1  rearnsha  *    notice, this list of conditions and the following disclaimer.
     42        1.1  rearnsha  * 2. Redistributions in binary form must reproduce the above copyright
     43        1.1  rearnsha  *    notice, this list of conditions and the following disclaimer in the
     44        1.1  rearnsha  *    documentation and/or other materials provided with the distribution.
     45        1.1  rearnsha  * 3. All advertising materials mentioning features or use of this software
     46        1.1  rearnsha  *    must display the following acknowledgement:
     47        1.1  rearnsha  *	This product includes software developed by Mark Brinicombe
     48        1.1  rearnsha  *	for the NetBSD Project.
     49        1.1  rearnsha  * 4. The name of the company nor the name of the author may be used to
     50        1.1  rearnsha  *    endorse or promote products derived from this software without specific
     51        1.1  rearnsha  *    prior written permission.
     52        1.1  rearnsha  *
     53        1.1  rearnsha  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     54        1.1  rearnsha  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     55        1.1  rearnsha  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     56        1.1  rearnsha  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     57        1.1  rearnsha  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     58        1.1  rearnsha  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     59        1.1  rearnsha  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     60        1.1  rearnsha  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     61        1.1  rearnsha  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     62        1.1  rearnsha  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     63        1.1  rearnsha  * SUCH DAMAGE.
     64        1.1  rearnsha  *
     65        1.1  rearnsha  * Machine dependant functions for kernel setup for integrator board
     66        1.1  rearnsha  *
     67        1.1  rearnsha  * Created      : 24/11/97
     68        1.1  rearnsha  */
     69       1.43     lukem 
     70       1.43     lukem #include <sys/cdefs.h>
     71  1.57.10.3      yamt __KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.57.10.3 2009/08/19 18:46:07 yamt Exp $");
     72        1.1  rearnsha 
     73        1.1  rearnsha #include "opt_ddb.h"
     74        1.1  rearnsha #include "opt_pmap_debug.h"
     75        1.1  rearnsha 
     76        1.1  rearnsha #include <sys/param.h>
     77        1.1  rearnsha #include <sys/device.h>
     78        1.1  rearnsha #include <sys/systm.h>
     79        1.1  rearnsha #include <sys/kernel.h>
     80        1.1  rearnsha #include <sys/exec.h>
     81        1.1  rearnsha #include <sys/proc.h>
     82        1.1  rearnsha #include <sys/msgbuf.h>
     83        1.1  rearnsha #include <sys/reboot.h>
     84        1.1  rearnsha #include <sys/termios.h>
     85       1.32     ragge #include <sys/ksyms.h>
     86        1.1  rearnsha 
     87       1.31   thorpej #include <uvm/uvm_extern.h>
     88       1.31   thorpej 
     89        1.1  rearnsha #include <dev/cons.h>
     90        1.1  rearnsha 
     91        1.1  rearnsha #include <machine/db_machdep.h>
     92        1.1  rearnsha #include <ddb/db_sym.h>
     93        1.1  rearnsha #include <ddb/db_extern.h>
     94        1.1  rearnsha 
     95        1.1  rearnsha #include <machine/bootconfig.h>
     96        1.1  rearnsha #include <machine/bus.h>
     97        1.1  rearnsha #include <machine/cpu.h>
     98        1.1  rearnsha #include <machine/frame.h>
     99        1.1  rearnsha #include <machine/intr.h>
    100        1.6   thorpej #include <arm/undefined.h>
    101        1.1  rearnsha 
    102       1.23  rearnsha #include <arm/arm32/machdep.h>
    103       1.23  rearnsha 
    104        1.1  rearnsha #include <evbarm/integrator/integrator_boot.h>
    105        1.1  rearnsha 
    106        1.1  rearnsha #include "pci.h"
    107       1.32     ragge #include "ksyms.h"
    108        1.1  rearnsha 
    109        1.1  rearnsha void ifpga_reset(void) __attribute__((noreturn));
    110       1.36   thorpej 
    111       1.36   thorpej /* Kernel text starts 2MB in from the bottom of the kernel address space. */
    112       1.36   thorpej #define	KERNEL_TEXT_BASE	(KERNEL_BASE + 0x00200000)
    113       1.39   thorpej #define	KERNEL_VM_BASE		(KERNEL_BASE + 0x01000000)
    114       1.40   thorpej 
    115       1.40   thorpej /*
    116       1.40   thorpej  * The range 0xc1000000 - 0xccffffff is available for kernel VM space
    117       1.40   thorpej  * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
    118       1.40   thorpej  */
    119       1.40   thorpej #define KERNEL_VM_SIZE		0x0C000000
    120       1.36   thorpej 
    121        1.1  rearnsha /*
    122        1.1  rearnsha  * Address to call from cpu_reset() to reset the machine.
    123        1.1  rearnsha  * This is machine architecture dependant as it varies depending
    124        1.1  rearnsha  * on where the ROM appears when you turn the MMU off.
    125        1.1  rearnsha  */
    126        1.1  rearnsha 
    127        1.1  rearnsha u_int cpu_reset_address = (u_int) ifpga_reset;
    128        1.1  rearnsha 
    129        1.1  rearnsha /* Define various stack sizes in pages */
    130        1.1  rearnsha #define IRQ_STACK_SIZE	1
    131        1.1  rearnsha #define ABT_STACK_SIZE	1
    132        1.1  rearnsha #define UND_STACK_SIZE	1
    133        1.1  rearnsha 
    134        1.1  rearnsha BootConfig bootconfig;		/* Boot config storage */
    135        1.1  rearnsha char *boot_args = NULL;
    136        1.1  rearnsha char *boot_file = NULL;
    137        1.1  rearnsha 
    138        1.1  rearnsha vm_offset_t physical_start;
    139        1.1  rearnsha vm_offset_t physical_end;
    140        1.1  rearnsha vm_offset_t pagetables_start;
    141        1.1  rearnsha 
    142        1.1  rearnsha /*int debug_flags;*/
    143        1.1  rearnsha #ifndef PMAP_STATIC_L1S
    144        1.1  rearnsha int max_processes = 64;			/* Default number */
    145        1.1  rearnsha #endif	/* !PMAP_STATIC_L1S */
    146        1.1  rearnsha 
    147        1.1  rearnsha /* Physical and virtual addresses for some global pages */
    148        1.1  rearnsha pv_addr_t irqstack;
    149        1.1  rearnsha pv_addr_t undstack;
    150        1.1  rearnsha pv_addr_t abtstack;
    151        1.1  rearnsha pv_addr_t kernelstack;
    152        1.1  rearnsha 
    153        1.1  rearnsha vm_offset_t msgbufphys;
    154        1.1  rearnsha 
    155        1.1  rearnsha extern u_int data_abort_handler_address;
    156        1.1  rearnsha extern u_int prefetch_abort_handler_address;
    157        1.1  rearnsha extern u_int undefined_handler_address;
    158        1.1  rearnsha 
    159        1.1  rearnsha #ifdef PMAP_DEBUG
    160        1.1  rearnsha extern int pmap_debug_level;
    161        1.1  rearnsha #endif
    162        1.1  rearnsha 
    163       1.23  rearnsha #define KERNEL_PT_SYS		0	/* L2 table for mapping zero page */
    164       1.23  rearnsha 
    165       1.23  rearnsha #define KERNEL_PT_KERNEL	1	/* L2 table for mapping kernel */
    166       1.23  rearnsha #define	KERNEL_PT_KERNEL_NUM	2
    167       1.23  rearnsha 					/* L2 tables for mapping kernel VM */
    168       1.23  rearnsha #define KERNEL_PT_VMDATA	(KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
    169       1.17     chris #define	KERNEL_PT_VMDATA_NUM	4	/* start with 16MB of KVM */
    170        1.1  rearnsha #define NUM_KERNEL_PTS		(KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
    171        1.1  rearnsha 
    172       1.14   thorpej pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
    173        1.1  rearnsha 
    174        1.1  rearnsha struct user *proc0paddr;
    175        1.1  rearnsha 
    176        1.1  rearnsha /* Prototypes */
    177        1.1  rearnsha 
    178       1.23  rearnsha static void	integrator_sdram_bounds	(paddr_t *, psize_t *);
    179        1.1  rearnsha 
    180       1.23  rearnsha void	consinit(void);
    181        1.1  rearnsha 
    182        1.1  rearnsha /* A load of console goo. */
    183        1.1  rearnsha #include "vga.h"
    184       1.23  rearnsha #if NVGA > 0
    185        1.1  rearnsha #include <dev/ic/mc6845reg.h>
    186        1.1  rearnsha #include <dev/ic/pcdisplayvar.h>
    187        1.1  rearnsha #include <dev/ic/vgareg.h>
    188        1.1  rearnsha #include <dev/ic/vgavar.h>
    189        1.1  rearnsha #endif
    190        1.1  rearnsha 
    191        1.1  rearnsha #include "pckbc.h"
    192       1.23  rearnsha #if NPCKBC > 0
    193        1.1  rearnsha #include <dev/ic/i8042reg.h>
    194        1.1  rearnsha #include <dev/ic/pckbcvar.h>
    195        1.1  rearnsha #endif
    196        1.1  rearnsha 
    197        1.1  rearnsha #include "com.h"
    198       1.23  rearnsha #if NCOM > 0
    199        1.1  rearnsha #include <dev/ic/comreg.h>
    200        1.1  rearnsha #include <dev/ic/comvar.h>
    201        1.1  rearnsha #ifndef CONCOMADDR
    202        1.1  rearnsha #define CONCOMADDR 0x3f8
    203        1.1  rearnsha #endif
    204        1.1  rearnsha #endif
    205        1.1  rearnsha 
    206       1.23  rearnsha /*
    207       1.23  rearnsha  * Define the default console speed for the board.  This is generally
    208       1.23  rearnsha  * what the firmware provided with the board defaults to.
    209       1.23  rearnsha  */
    210       1.30   mycroft #ifndef CONSPEED
    211        1.1  rearnsha #define CONSPEED B115200
    212        1.1  rearnsha #endif
    213        1.1  rearnsha #ifndef CONMODE
    214        1.1  rearnsha #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
    215        1.1  rearnsha #endif
    216        1.1  rearnsha 
    217        1.1  rearnsha int comcnspeed = CONSPEED;
    218        1.1  rearnsha int comcnmode = CONMODE;
    219        1.1  rearnsha 
    220        1.1  rearnsha #include "plcom.h"
    221        1.1  rearnsha #if (NPLCOM > 0)
    222        1.1  rearnsha #include <evbarm/dev/plcomreg.h>
    223        1.1  rearnsha #include <evbarm/dev/plcomvar.h>
    224        1.1  rearnsha 
    225        1.1  rearnsha #include <evbarm/ifpga/ifpgamem.h>
    226        1.1  rearnsha #include <evbarm/ifpga/ifpgareg.h>
    227        1.1  rearnsha #include <evbarm/ifpga/ifpgavar.h>
    228        1.1  rearnsha #endif
    229        1.1  rearnsha 
    230        1.1  rearnsha #ifndef CONSDEVNAME
    231        1.1  rearnsha #define CONSDEVNAME "plcom"
    232        1.1  rearnsha #endif
    233        1.1  rearnsha 
    234        1.1  rearnsha #ifndef PLCONSPEED
    235        1.1  rearnsha #define PLCONSPEED B38400
    236        1.1  rearnsha #endif
    237        1.1  rearnsha #ifndef PLCONMODE
    238        1.1  rearnsha #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
    239        1.1  rearnsha #endif
    240        1.1  rearnsha #ifndef PLCOMCNUNIT
    241        1.1  rearnsha #define PLCOMCNUNIT -1
    242        1.1  rearnsha #endif
    243        1.1  rearnsha 
    244        1.1  rearnsha int plcomcnspeed = PLCONSPEED;
    245        1.1  rearnsha int plcomcnmode = PLCONMODE;
    246        1.1  rearnsha 
    247        1.1  rearnsha #if 0
    248        1.1  rearnsha extern struct consdev kcomcons;
    249        1.1  rearnsha static void kcomcnputc(dev_t, int);
    250        1.1  rearnsha #endif
    251        1.1  rearnsha 
    252        1.1  rearnsha /*
    253        1.1  rearnsha  * void cpu_reboot(int howto, char *bootstr)
    254        1.1  rearnsha  *
    255        1.1  rearnsha  * Reboots the system
    256        1.1  rearnsha  *
    257        1.1  rearnsha  * Deal with any syncing, unmounting, dumping and shutdown hooks,
    258        1.1  rearnsha  * then reset the CPU.
    259        1.1  rearnsha  */
    260        1.1  rearnsha void
    261       1.23  rearnsha cpu_reboot(int howto, char *bootstr)
    262        1.1  rearnsha {
    263        1.1  rearnsha 
    264        1.1  rearnsha 	/*
    265        1.1  rearnsha 	 * If we are still cold then hit the air brakes
    266        1.1  rearnsha 	 * and crash to earth fast
    267        1.1  rearnsha 	 */
    268        1.1  rearnsha 	if (cold) {
    269        1.1  rearnsha 		doshutdownhooks();
    270  1.57.10.2      yamt 		pmf_system_shutdown(boothowto);
    271        1.1  rearnsha 		printf("The operating system has halted.\n");
    272        1.1  rearnsha 		printf("Please press any key to reboot.\n\n");
    273        1.1  rearnsha 		cngetc();
    274        1.1  rearnsha 		printf("rebooting...\n");
    275        1.1  rearnsha 		ifpga_reset();
    276        1.1  rearnsha 		/*NOTREACHED*/
    277        1.1  rearnsha 	}
    278        1.1  rearnsha 
    279        1.1  rearnsha 	/* Disable console buffering */
    280        1.1  rearnsha 
    281        1.1  rearnsha 	/*
    282        1.1  rearnsha 	 * If RB_NOSYNC was not specified sync the discs.
    283       1.23  rearnsha 	 * Note: Unless cold is set to 1 here, syslogd will die during the
    284       1.23  rearnsha 	 * unmount.  It looks like syslogd is getting woken up only to find
    285       1.23  rearnsha 	 * that it cannot page part of the binary in as the filesystem has
    286       1.23  rearnsha 	 * been unmounted.
    287        1.1  rearnsha 	 */
    288        1.1  rearnsha 	if (!(howto & RB_NOSYNC))
    289        1.1  rearnsha 		bootsync();
    290        1.1  rearnsha 
    291        1.1  rearnsha 	/* Say NO to interrupts */
    292        1.1  rearnsha 	splhigh();
    293        1.1  rearnsha 
    294        1.1  rearnsha 	/* Do a dump if requested. */
    295        1.1  rearnsha 	if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
    296        1.1  rearnsha 		dumpsys();
    297        1.1  rearnsha 
    298        1.1  rearnsha 	/* Run any shutdown hooks */
    299        1.1  rearnsha 	doshutdownhooks();
    300        1.1  rearnsha 
    301  1.57.10.2      yamt 	pmf_system_shutdown(boothowto);
    302  1.57.10.2      yamt 
    303        1.1  rearnsha 	/* Make sure IRQ's are disabled */
    304        1.1  rearnsha 	IRQdisable;
    305        1.1  rearnsha 
    306        1.1  rearnsha 	if (howto & RB_HALT) {
    307        1.1  rearnsha 		printf("The operating system has halted.\n");
    308        1.1  rearnsha 		printf("Please press any key to reboot.\n\n");
    309        1.1  rearnsha 		cngetc();
    310        1.1  rearnsha 	}
    311        1.1  rearnsha 
    312        1.1  rearnsha 	printf("rebooting...\n");
    313        1.1  rearnsha 	ifpga_reset();
    314        1.1  rearnsha 	/*NOTREACHED*/
    315        1.1  rearnsha }
    316        1.1  rearnsha 
    317       1.42   thorpej /* Statically mapped devices. */
    318       1.42   thorpej static const struct pmap_devmap integrator_devmap[] = {
    319        1.1  rearnsha #if NPLCOM > 0 && defined(PLCONSOLE)
    320       1.23  rearnsha 	{
    321       1.23  rearnsha 		UART0_BOOT_BASE,
    322       1.23  rearnsha 		IFPGA_IO_BASE + IFPGA_UART0,
    323       1.23  rearnsha 		1024 * 1024,
    324       1.23  rearnsha 		VM_PROT_READ|VM_PROT_WRITE,
    325       1.23  rearnsha 		PTE_NOCACHE
    326       1.23  rearnsha 	},
    327       1.23  rearnsha 
    328       1.23  rearnsha 	{
    329       1.23  rearnsha 		UART1_BOOT_BASE,
    330       1.23  rearnsha 		IFPGA_IO_BASE + IFPGA_UART1,
    331       1.23  rearnsha 		1024 * 1024,
    332       1.23  rearnsha 		VM_PROT_READ|VM_PROT_WRITE,
    333       1.23  rearnsha 		PTE_NOCACHE
    334       1.23  rearnsha 	},
    335        1.1  rearnsha #endif
    336        1.1  rearnsha #if NPCI > 0
    337       1.23  rearnsha 	{
    338       1.23  rearnsha 		IFPGA_PCI_IO_VBASE,
    339       1.23  rearnsha 		IFPGA_PCI_IO_BASE,
    340       1.23  rearnsha 		IFPGA_PCI_IO_VSIZE,
    341       1.23  rearnsha 		VM_PROT_READ|VM_PROT_WRITE,
    342       1.23  rearnsha 		PTE_NOCACHE
    343       1.23  rearnsha 	},
    344       1.23  rearnsha 
    345       1.23  rearnsha 	{
    346       1.23  rearnsha 		IFPGA_PCI_CONF_VBASE,
    347       1.23  rearnsha 		IFPGA_PCI_CONF_BASE,
    348       1.23  rearnsha 		IFPGA_PCI_CONF_VSIZE,
    349       1.23  rearnsha 		VM_PROT_READ|VM_PROT_WRITE,
    350       1.42   thorpej 		PTE_NOCACHE
    351       1.42   thorpej 	},
    352        1.1  rearnsha #endif
    353        1.1  rearnsha 
    354       1.23  rearnsha 	{
    355       1.23  rearnsha 		0,
    356       1.23  rearnsha 		0,
    357       1.23  rearnsha 		0,
    358       1.23  rearnsha 		0,
    359       1.23  rearnsha 		0
    360       1.23  rearnsha 	}
    361        1.1  rearnsha };
    362        1.1  rearnsha 
    363        1.1  rearnsha /*
    364       1.23  rearnsha  * u_int initarm(...)
    365        1.1  rearnsha  *
    366        1.1  rearnsha  * Initial entry point on startup. This gets called before main() is
    367        1.1  rearnsha  * entered.
    368        1.1  rearnsha  * It should be responsible for setting up everything that must be
    369        1.1  rearnsha  * in place when main is called.
    370        1.1  rearnsha  * This includes
    371        1.1  rearnsha  *   Taking a copy of the boot configuration structure.
    372        1.1  rearnsha  *   Initialising the physical console so characters can be printed.
    373        1.1  rearnsha  *   Setting up page tables for the kernel
    374        1.1  rearnsha  *   Relocating the kernel to the bottom of physical memory
    375        1.1  rearnsha  */
    376        1.1  rearnsha 
    377        1.1  rearnsha u_int
    378       1.23  rearnsha initarm(void *arg)
    379        1.1  rearnsha {
    380        1.1  rearnsha 	int loop;
    381        1.1  rearnsha 	int loop1;
    382        1.1  rearnsha 	u_int l1pagetable;
    383       1.55     perry 	extern char etext __asm ("_etext");
    384       1.55     perry 	extern char end __asm ("_end");
    385       1.23  rearnsha 	paddr_t memstart;
    386       1.23  rearnsha 	psize_t memsize;
    387       1.47  rearnsha 	vm_offset_t physical_freestart;
    388       1.47  rearnsha 	vm_offset_t physical_freeend;
    389        1.1  rearnsha #if NPLCOM > 0 && defined(PLCONSOLE)
    390        1.1  rearnsha 	static struct bus_space plcom_bus_space;
    391        1.1  rearnsha #endif
    392        1.1  rearnsha 
    393        1.1  rearnsha 	/*
    394        1.1  rearnsha 	 * Heads up ... Setup the CPU / MMU / TLB functions
    395        1.1  rearnsha 	 */
    396        1.1  rearnsha 	if (set_cpufuncs())
    397       1.50       wiz 		panic("CPU not recognized!");
    398        1.1  rearnsha 
    399        1.1  rearnsha #if NPLCOM > 0 && defined(PLCONSOLE)
    400        1.1  rearnsha 	/*
    401        1.1  rearnsha 	 * Initialise the diagnostic serial console
    402        1.1  rearnsha 	 * This allows a means of generating output during initarm().
    403        1.1  rearnsha 	 * Once all the memory map changes are complete we can call consinit()
    404        1.1  rearnsha 	 * and not have to worry about things moving.
    405        1.1  rearnsha 	 */
    406        1.1  rearnsha 
    407        1.1  rearnsha 	if (PLCOMCNUNIT == 0) {
    408        1.1  rearnsha 		ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd600000);
    409        1.1  rearnsha 		plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
    410        1.1  rearnsha 		    IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
    411        1.1  rearnsha 	} else if (PLCOMCNUNIT == 1) {
    412        1.1  rearnsha 		ifpga_create_io_bs_tag(&plcom_bus_space, (void*)0xfd700000);
    413        1.1  rearnsha 		plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
    414        1.1  rearnsha 		    IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT);
    415        1.1  rearnsha 	}
    416        1.1  rearnsha #endif
    417        1.1  rearnsha 
    418       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    419        1.1  rearnsha 	/* Talk to the user */
    420       1.23  rearnsha 	printf("\nNetBSD/evbarm (Integrator) booting ...\n");
    421       1.38   thorpej #endif
    422        1.1  rearnsha 
    423        1.1  rearnsha 	/*
    424       1.23  rearnsha 	 * Fetch the SDRAM start/size from the CM configuration registers.
    425        1.1  rearnsha 	 */
    426       1.23  rearnsha 	integrator_sdram_bounds(&memstart, &memsize);
    427        1.1  rearnsha 
    428       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    429        1.1  rearnsha 	printf("initarm: Configuring system ...\n");
    430       1.38   thorpej #endif
    431        1.1  rearnsha 
    432       1.23  rearnsha 	/* Fake bootconfig structure for the benefit of pmap.c */
    433       1.23  rearnsha 	/* XXX must make the memory description h/w independent */
    434       1.23  rearnsha 	bootconfig.dramblocks = 1;
    435       1.23  rearnsha 	bootconfig.dram[0].address = memstart;
    436       1.31   thorpej 	bootconfig.dram[0].pages = memsize / PAGE_SIZE;
    437       1.47  rearnsha 	bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA | BOOT_DRAM_PREFER;
    438       1.23  rearnsha 
    439        1.1  rearnsha 	/*
    440        1.1  rearnsha 	 * Set up the variables that define the availablilty of
    441       1.23  rearnsha 	 * physical memory.  For now, we're going to set
    442       1.23  rearnsha 	 * physical_freestart to 0x00200000 (where the kernel
    443       1.23  rearnsha 	 * was loaded), and allocate the memory we need downwards.
    444       1.23  rearnsha 	 * If we get too close to the L1 table that we set up, we
    445       1.23  rearnsha 	 * will panic.  We will update physical_freestart and
    446       1.23  rearnsha 	 * physical_freeend later to reflect what pmap_bootstrap()
    447       1.23  rearnsha 	 * wants to see.
    448       1.23  rearnsha 	 *
    449       1.47  rearnsha 	 * We assume that the kernel is loaded into bank[0].
    450       1.47  rearnsha 	 *
    451       1.23  rearnsha 	 * XXX pmap_bootstrap() needs an enema.
    452        1.1  rearnsha 	 */
    453       1.23  rearnsha 	physical_start = bootconfig.dram[0].address;
    454       1.47  rearnsha 	physical_end = 0;
    455        1.1  rearnsha 
    456       1.47  rearnsha 	/* Update the address of the first free 16KB chunk of physical memory */
    457       1.47  rearnsha 	physical_freestart = ((uintptr_t) &end - KERNEL_BASE + PGOFSET)
    458       1.47  rearnsha 	    & ~PGOFSET;
    459       1.47  rearnsha 	if (physical_freestart < bootconfig.dram[0].address)
    460       1.47  rearnsha 		physical_freestart = bootconfig.dram[0].address;
    461       1.47  rearnsha 	physical_freeend = bootconfig.dram[0].address +
    462       1.47  rearnsha 	    bootconfig.dram[0].pages * PAGE_SIZE;
    463       1.47  rearnsha 
    464       1.47  rearnsha 	for (loop = 0, physmem = 0; loop < bootconfig.dramblocks; loop++) {
    465       1.47  rearnsha 		paddr_t memoryblock_end;
    466       1.47  rearnsha 
    467       1.47  rearnsha 		memoryblock_end = bootconfig.dram[loop].address +
    468       1.47  rearnsha 		    bootconfig.dram[loop].pages * PAGE_SIZE;
    469       1.47  rearnsha 		if (memoryblock_end > physical_end)
    470       1.47  rearnsha 			physical_end = memoryblock_end;
    471       1.47  rearnsha 		if (bootconfig.dram[loop].address < physical_start)
    472       1.47  rearnsha 			physical_start = bootconfig.dram[loop].address;
    473       1.47  rearnsha 
    474       1.47  rearnsha 		physmem += bootconfig.dram[loop].pages;
    475       1.47  rearnsha 	}
    476        1.1  rearnsha 
    477       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    478        1.1  rearnsha 	/* Tell the user about the memory */
    479        1.1  rearnsha 	printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
    480        1.1  rearnsha 	    physical_start, physical_end - 1);
    481       1.38   thorpej #endif
    482        1.1  rearnsha 
    483        1.1  rearnsha 	/*
    484       1.23  rearnsha 	 * Okay, the kernel starts 2MB in from the bottom of physical
    485       1.23  rearnsha 	 * memory.  We are going to allocate our bootstrap pages downwards
    486       1.23  rearnsha 	 * from there.
    487        1.1  rearnsha 	 *
    488       1.23  rearnsha 	 * We need to allocate some fixed page tables to get the kernel
    489       1.23  rearnsha 	 * going.  We allocate one page directory and a number of page
    490       1.23  rearnsha 	 * tables and store the physical addresses in the kernel_pt_table
    491       1.23  rearnsha 	 * array.
    492       1.23  rearnsha 	 *
    493       1.23  rearnsha 	 * The kernel page directory must be on a 16K boundary.  The page
    494       1.53       abs 	 * tables must be on 4K boundaries.  What we do is allocate the
    495       1.23  rearnsha 	 * page directory on the first 16K boundary that we encounter, and
    496       1.23  rearnsha 	 * the page tables on 4K boundaries otherwise.  Since we allocate
    497       1.23  rearnsha 	 * at least 3 L2 page tables, we are guaranteed to encounter at
    498       1.23  rearnsha 	 * least one 16K aligned region.
    499        1.1  rearnsha 	 */
    500        1.1  rearnsha 
    501        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    502        1.1  rearnsha 	printf("Allocating page tables\n");
    503        1.1  rearnsha #endif
    504        1.1  rearnsha 
    505        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    506       1.47  rearnsha 	printf("freestart = 0x%08lx, free pages = %d (0x%08x)\n",
    507       1.47  rearnsha 	       physical_freestart, physmem, physmem);
    508        1.1  rearnsha #endif
    509        1.1  rearnsha 
    510        1.1  rearnsha 	/* Define a macro to simplify memory allocation */
    511       1.23  rearnsha #define	valloc_pages(var, np)				\
    512       1.23  rearnsha 	alloc_pages((var).pv_pa, (np));			\
    513       1.47  rearnsha 	(var).pv_va = KERNEL_BASE + (var).pv_pa;
    514       1.23  rearnsha 
    515       1.23  rearnsha #define alloc_pages(var, np)				\
    516       1.47  rearnsha 	(var) = physical_freestart;			\
    517       1.47  rearnsha 	physical_freestart += ((np) * PAGE_SIZE);	\
    518       1.23  rearnsha 	if (physical_freeend < physical_freestart)	\
    519       1.23  rearnsha 		panic("initarm: out of memory");	\
    520       1.31   thorpej 	memset((char *)(var), 0, ((np) * PAGE_SIZE));
    521        1.1  rearnsha 
    522        1.1  rearnsha 	loop1 = 0;
    523        1.1  rearnsha 	for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
    524        1.1  rearnsha 		/* Are we 16KB aligned for an L1 ? */
    525       1.47  rearnsha 		if ((physical_freestart & (L1_TABLE_SIZE - 1)) == 0
    526        1.1  rearnsha 		    && kernel_l1pt.pv_pa == 0) {
    527       1.31   thorpej 			valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
    528        1.1  rearnsha 		} else {
    529       1.33   thorpej 			valloc_pages(kernel_pt_table[loop1],
    530       1.33   thorpej 			    L2_TABLE_SIZE / PAGE_SIZE);
    531       1.23  rearnsha 			++loop1;
    532        1.1  rearnsha 		}
    533        1.1  rearnsha 	}
    534        1.1  rearnsha 
    535        1.1  rearnsha 	/* This should never be able to happen but better confirm that. */
    536       1.21   thorpej 	if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
    537       1.28    provos 		panic("initarm: Failed to align the kernel page directory");
    538        1.1  rearnsha 
    539        1.1  rearnsha 	/*
    540        1.1  rearnsha 	 * Allocate a page for the system page mapped to V0x00000000
    541        1.1  rearnsha 	 * This page will just contain the system vectors and can be
    542        1.1  rearnsha 	 * shared by all processes.
    543        1.1  rearnsha 	 */
    544        1.1  rearnsha 	alloc_pages(systempage.pv_pa, 1);
    545        1.1  rearnsha 
    546        1.1  rearnsha 	/* Allocate stacks for all modes */
    547        1.1  rearnsha 	valloc_pages(irqstack, IRQ_STACK_SIZE);
    548        1.1  rearnsha 	valloc_pages(abtstack, ABT_STACK_SIZE);
    549        1.1  rearnsha 	valloc_pages(undstack, UND_STACK_SIZE);
    550        1.1  rearnsha 	valloc_pages(kernelstack, UPAGES);
    551        1.1  rearnsha 
    552        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    553       1.23  rearnsha 	printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
    554       1.23  rearnsha 	    irqstack.pv_va);
    555       1.23  rearnsha 	printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
    556       1.23  rearnsha 	    abtstack.pv_va);
    557       1.23  rearnsha 	printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
    558       1.23  rearnsha 	    undstack.pv_va);
    559       1.23  rearnsha 	printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
    560       1.23  rearnsha 	    kernelstack.pv_va);
    561        1.1  rearnsha #endif
    562        1.1  rearnsha 
    563       1.31   thorpej 	alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
    564        1.1  rearnsha 
    565        1.1  rearnsha 	/*
    566        1.1  rearnsha 	 * Ok we have allocated physical pages for the primary kernel
    567        1.1  rearnsha 	 * page tables
    568        1.1  rearnsha 	 */
    569        1.1  rearnsha 
    570        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    571       1.23  rearnsha 	printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
    572        1.1  rearnsha #endif
    573        1.1  rearnsha 
    574        1.1  rearnsha 	/*
    575       1.23  rearnsha 	 * Now we start construction of the L1 page table
    576        1.1  rearnsha 	 * We start by mapping the L2 page tables into the L1.
    577        1.1  rearnsha 	 * This means that we can replace L1 mappings later on if necessary
    578        1.1  rearnsha 	 */
    579        1.1  rearnsha 	l1pagetable = kernel_l1pt.pv_pa;
    580        1.1  rearnsha 
    581        1.1  rearnsha 	/* Map the L2 pages tables in the L1 page table */
    582       1.11   thorpej 	pmap_link_l2pt(l1pagetable, 0x00000000,
    583       1.14   thorpej 	    &kernel_pt_table[KERNEL_PT_SYS]);
    584       1.23  rearnsha 	for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
    585       1.23  rearnsha 		pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
    586       1.23  rearnsha 		    &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
    587       1.23  rearnsha 	for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
    588       1.11   thorpej 		pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
    589       1.14   thorpej 		    &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
    590       1.17     chris 
    591       1.17     chris 	/* update the top of the kernel VM */
    592       1.19   thorpej 	pmap_curmaxkvaddr =
    593       1.19   thorpej 	    KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
    594        1.1  rearnsha 
    595        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    596        1.1  rearnsha 	printf("Mapping kernel\n");
    597        1.1  rearnsha #endif
    598        1.1  rearnsha 
    599        1.1  rearnsha 	/* Now we fill in the L2 pagetable for the kernel static code/data */
    600        1.1  rearnsha 	{
    601        1.1  rearnsha 		size_t textsize = (uintptr_t) &etext - KERNEL_TEXT_BASE;
    602        1.1  rearnsha 		size_t totalsize = (uintptr_t) &end - KERNEL_TEXT_BASE;
    603       1.23  rearnsha 		u_int logical;
    604        1.1  rearnsha 
    605       1.23  rearnsha 		textsize = (textsize + PGOFSET) & ~PGOFSET;
    606        1.1  rearnsha 		totalsize = (totalsize + PGOFSET) & ~PGOFSET;
    607       1.23  rearnsha 
    608       1.23  rearnsha 		logical = 0x00200000;	/* offset of kernel in RAM */
    609       1.23  rearnsha 
    610       1.23  rearnsha 		logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
    611       1.47  rearnsha 		    logical, textsize, VM_PROT_READ | VM_PROT_WRITE,
    612       1.47  rearnsha 		    PTE_CACHE);
    613       1.23  rearnsha 		logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
    614       1.47  rearnsha 		    logical, totalsize - textsize,
    615       1.47  rearnsha 		    VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
    616        1.1  rearnsha 	}
    617        1.1  rearnsha 
    618        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    619        1.1  rearnsha 	printf("Constructing L2 page tables\n");
    620        1.1  rearnsha #endif
    621        1.1  rearnsha 
    622        1.1  rearnsha 	/* Map the stack pages */
    623       1.14   thorpej 	pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
    624       1.31   thorpej 	    IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    625       1.14   thorpej 	pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
    626       1.31   thorpej 	    ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    627       1.14   thorpej 	pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
    628       1.31   thorpej 	    UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    629       1.14   thorpej 	pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
    630       1.31   thorpej 	    UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    631       1.13   thorpej 
    632       1.33   thorpej 	pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
    633       1.33   thorpej 	    L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
    634        1.1  rearnsha 
    635       1.33   thorpej 	for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
    636       1.33   thorpej 		pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
    637       1.44  rearnsha 		    kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
    638       1.33   thorpej 		    VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
    639       1.33   thorpej 	}
    640        1.1  rearnsha 
    641       1.20   thorpej 	/* Map the vector page. */
    642        1.1  rearnsha #if 1
    643        1.1  rearnsha 	/* MULTI-ICE requires that page 0 is NC/NB so that it can download
    644        1.1  rearnsha 	   the cache-clean code there.  */
    645       1.51  rearnsha 	pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
    646       1.10   thorpej 	    VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
    647        1.1  rearnsha #else
    648       1.51  rearnsha 	pmap_map_entry(l1pagetable, ARM_VECTORS_LOW, systempage.pv_pa,
    649       1.20   thorpej 	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    650        1.1  rearnsha #endif
    651        1.1  rearnsha 
    652       1.42   thorpej 	/* Map the statically mapped devices. */
    653       1.42   thorpej 	pmap_devmap_bootstrap(l1pagetable, integrator_devmap);
    654        1.1  rearnsha 
    655        1.1  rearnsha 	/*
    656        1.1  rearnsha 	 * Now we have the real page tables in place so we can switch to them.
    657       1.23  rearnsha 	 * Once this is done we will be running with the REAL kernel page
    658       1.23  rearnsha 	 * tables.
    659       1.23  rearnsha 	 */
    660       1.23  rearnsha 
    661        1.1  rearnsha 	/* Switch tables */
    662        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    663        1.1  rearnsha 	printf("switching to new L1 page table  @%#lx...", kernel_l1pt.pv_pa);
    664        1.1  rearnsha #endif
    665       1.33   thorpej 	cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
    666        1.1  rearnsha 	setttb(kernel_l1pt.pv_pa);
    667       1.23  rearnsha 	cpu_tlb_flushID();
    668       1.33   thorpej 	cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
    669       1.33   thorpej 
    670       1.33   thorpej 	/*
    671       1.33   thorpej 	 * Moved from cpu_startup() as data_abort_handler() references
    672       1.33   thorpej 	 * this during uvm init
    673       1.33   thorpej 	 */
    674       1.33   thorpej 	proc0paddr = (struct user *)kernelstack.pv_va;
    675       1.33   thorpej 	lwp0.l_addr = proc0paddr;
    676        1.1  rearnsha 
    677        1.1  rearnsha #ifdef PLCONSOLE
    678        1.1  rearnsha 	/*
    679        1.1  rearnsha 	 * The IFPGA registers have just moved.
    680        1.1  rearnsha 	 * Detach the diagnostic serial port and reattach at the new address.
    681        1.1  rearnsha 	 */
    682        1.1  rearnsha 	plcomcndetach();
    683        1.1  rearnsha #endif
    684        1.1  rearnsha 
    685        1.1  rearnsha 	/*
    686        1.1  rearnsha 	 * XXX this should only be done in main() but it useful to
    687        1.1  rearnsha 	 * have output earlier ...
    688        1.1  rearnsha 	 */
    689        1.1  rearnsha 	consinit();
    690        1.1  rearnsha 
    691        1.1  rearnsha #ifdef VERBOSE_INIT_ARM
    692        1.1  rearnsha 	printf("bootstrap done.\n");
    693        1.1  rearnsha #endif
    694        1.1  rearnsha 
    695       1.20   thorpej 	arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
    696        1.1  rearnsha 
    697        1.1  rearnsha 	/*
    698        1.1  rearnsha 	 * Pages were allocated during the secondary bootstrap for the
    699        1.1  rearnsha 	 * stacks for different CPU modes.
    700        1.1  rearnsha 	 * We must now set the r13 registers in the different CPU modes to
    701        1.1  rearnsha 	 * point to these stacks.
    702        1.1  rearnsha 	 * Since the ARM stacks use STMFD etc. we must set r13 to the top end
    703        1.1  rearnsha 	 * of the stack memory.
    704        1.1  rearnsha 	 */
    705       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    706        1.1  rearnsha 	printf("init subsystems: stacks ");
    707       1.38   thorpej #endif
    708        1.1  rearnsha 
    709       1.31   thorpej 	set_stackptr(PSR_IRQ32_MODE,
    710       1.31   thorpej 	    irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
    711       1.31   thorpej 	set_stackptr(PSR_ABT32_MODE,
    712       1.31   thorpej 	    abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
    713       1.31   thorpej 	set_stackptr(PSR_UND32_MODE,
    714       1.31   thorpej 	    undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
    715        1.1  rearnsha 
    716        1.1  rearnsha 	/*
    717        1.1  rearnsha 	 * Well we should set a data abort handler.
    718       1.23  rearnsha 	 * Once things get going this will change as we will need a proper
    719       1.23  rearnsha 	 * handler.
    720        1.1  rearnsha 	 * Until then we will use a handler that just panics but tells us
    721        1.1  rearnsha 	 * why.
    722        1.1  rearnsha 	 * Initialisation of the vectors will just panic on a data abort.
    723       1.52       abs 	 * This just fills in a slightly better one.
    724        1.1  rearnsha 	 */
    725       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    726        1.1  rearnsha 	printf("vectors ");
    727       1.38   thorpej #endif
    728        1.1  rearnsha 	data_abort_handler_address = (u_int)data_abort_handler;
    729        1.1  rearnsha 	prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
    730        1.1  rearnsha 	undefined_handler_address = (u_int)undefinedinstruction_bounce;
    731        1.1  rearnsha 
    732        1.1  rearnsha 	/* Initialise the undefined instruction handlers */
    733       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    734        1.1  rearnsha 	printf("undefined ");
    735       1.38   thorpej #endif
    736        1.1  rearnsha 	undefined_init();
    737        1.1  rearnsha 
    738       1.25   thorpej 	/* Load memory into UVM. */
    739       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    740       1.25   thorpej 	printf("page ");
    741       1.38   thorpej #endif
    742       1.25   thorpej 	uvm_setpagesize();	/* initialize PAGE_SIZE-dependent variables */
    743       1.47  rearnsha 
    744       1.47  rearnsha 	/* Round the start up and the end down to a page.  */
    745       1.47  rearnsha 	physical_freestart = (physical_freestart + PGOFSET) & ~PGOFSET;
    746       1.47  rearnsha 	physical_freeend &= ~PGOFSET;
    747       1.47  rearnsha 
    748       1.47  rearnsha 	for (loop = 0; loop < bootconfig.dramblocks; loop++) {
    749       1.47  rearnsha 		paddr_t block_start = (paddr_t) bootconfig.dram[loop].address;
    750       1.47  rearnsha 		paddr_t block_end = block_start +
    751       1.47  rearnsha 		    (bootconfig.dram[loop].pages * PAGE_SIZE);
    752       1.47  rearnsha 
    753       1.47  rearnsha 		if (loop == 0) {
    754       1.47  rearnsha 			block_start = physical_freestart;
    755       1.47  rearnsha 			block_end = physical_freeend;
    756       1.47  rearnsha 		}
    757       1.47  rearnsha 
    758       1.47  rearnsha 
    759       1.47  rearnsha 		uvm_page_physload(atop(block_start), atop(block_end),
    760       1.47  rearnsha 		    atop(block_start), atop(block_end),
    761       1.47  rearnsha 		    (bootconfig.dram[loop].flags & BOOT_DRAM_PREFER) ?
    762       1.47  rearnsha 		    VM_FREELIST_DEFAULT : VM_FREELIST_DEFAULT + 1);
    763       1.47  rearnsha 	}
    764       1.25   thorpej 
    765        1.1  rearnsha 	/* Boot strap pmap telling it where the kernel page table is */
    766       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    767        1.1  rearnsha 	printf("pmap ");
    768       1.38   thorpej #endif
    769  1.57.10.1      yamt 	pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
    770        1.1  rearnsha 
    771        1.1  rearnsha 	/* Setup the IRQ system */
    772       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    773        1.1  rearnsha 	printf("irq ");
    774       1.38   thorpej #endif
    775       1.48  rearnsha 	ifpga_intr_init();
    776        1.1  rearnsha 
    777       1.38   thorpej #ifdef VERBOSE_INIT_ARM
    778        1.1  rearnsha 	printf("done.\n");
    779       1.38   thorpej #endif
    780        1.1  rearnsha 
    781        1.1  rearnsha #ifdef DDB
    782        1.1  rearnsha 	db_machine_init();
    783        1.1  rearnsha 	if (boothowto & RB_KDB)
    784        1.1  rearnsha 		Debugger();
    785        1.1  rearnsha #endif
    786        1.1  rearnsha 
    787        1.1  rearnsha 	/* We return the new stack pointer address */
    788        1.1  rearnsha 	return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
    789        1.1  rearnsha }
    790        1.1  rearnsha 
    791        1.1  rearnsha void
    792        1.1  rearnsha consinit(void)
    793        1.1  rearnsha {
    794        1.1  rearnsha 	static int consinit_called = 0;
    795        1.1  rearnsha #if NPLCOM > 0 && defined(PLCONSOLE)
    796        1.1  rearnsha 	static struct bus_space plcom_bus_space;
    797        1.1  rearnsha #endif
    798        1.1  rearnsha #if 0
    799        1.1  rearnsha 	char *console = CONSDEVNAME;
    800        1.1  rearnsha #endif
    801        1.1  rearnsha 
    802        1.1  rearnsha 	if (consinit_called != 0)
    803        1.1  rearnsha 		return;
    804        1.1  rearnsha 
    805        1.1  rearnsha 	consinit_called = 1;
    806        1.1  rearnsha 
    807        1.1  rearnsha #if NPLCOM > 0 && defined(PLCONSOLE)
    808        1.1  rearnsha 	if (PLCOMCNUNIT == 0) {
    809        1.1  rearnsha 		ifpga_create_io_bs_tag(&plcom_bus_space,
    810        1.1  rearnsha 		    (void*)UART0_BOOT_BASE);
    811        1.1  rearnsha 		if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
    812        1.1  rearnsha 		    IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
    813        1.1  rearnsha 			panic("can't init serial console");
    814        1.1  rearnsha 		return;
    815        1.1  rearnsha 	} else if (PLCOMCNUNIT == 1) {
    816        1.1  rearnsha 		ifpga_create_io_bs_tag(&plcom_bus_space,
    817        1.1  rearnsha 		    (void*)UART0_BOOT_BASE);
    818        1.1  rearnsha 		if (plcomcnattach(&plcom_bus_space, 0, plcomcnspeed,
    819        1.1  rearnsha 		    IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT))
    820        1.1  rearnsha 			panic("can't init serial console");
    821        1.1  rearnsha 		return;
    822        1.1  rearnsha 	}
    823        1.1  rearnsha #endif
    824        1.1  rearnsha #if (NCOM > 0)
    825        1.1  rearnsha 	if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed,
    826       1.41   thorpej 	    COM_FREQ, COM_TYPE_NORMAL, comcnmode))
    827        1.1  rearnsha 		panic("can't init serial console @%x", CONCOMADDR);
    828        1.1  rearnsha 	return;
    829        1.1  rearnsha #endif
    830        1.1  rearnsha 	panic("No serial console configured");
    831       1.23  rearnsha }
    832       1.23  rearnsha 
    833       1.23  rearnsha static void
    834       1.23  rearnsha integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize)
    835       1.23  rearnsha {
    836       1.23  rearnsha 	volatile unsigned long *cm_sdram
    837       1.23  rearnsha 	    = (volatile unsigned long *)0x10000020;
    838       1.46  rearnsha 	volatile unsigned long *cm_stat
    839       1.46  rearnsha 	    = (volatile unsigned long *)0x10000010;
    840       1.23  rearnsha 
    841       1.46  rearnsha 	*memstart = *cm_stat & 0x00ff0000;
    842       1.23  rearnsha 
    843       1.46  rearnsha 	/*
    844       1.46  rearnsha 	 * Although the SSRAM overlaps the SDRAM, we can use the wrap-around
    845       1.46  rearnsha 	 * to access the entire bank.
    846       1.46  rearnsha 	 */
    847       1.23  rearnsha 	switch ((*cm_sdram >> 2) & 0x7)
    848       1.23  rearnsha 	{
    849       1.23  rearnsha 	case 0:
    850       1.23  rearnsha 		*memsize = 16 * 1024 * 1024;
    851       1.23  rearnsha 		break;
    852       1.23  rearnsha 	case 1:
    853       1.23  rearnsha 		*memsize = 32 * 1024 * 1024;
    854       1.23  rearnsha 		break;
    855       1.23  rearnsha 	case 2:
    856       1.23  rearnsha 		*memsize = 64 * 1024 * 1024;
    857       1.23  rearnsha 		break;
    858       1.23  rearnsha 	case 3:
    859       1.23  rearnsha 		*memsize = 128 * 1024 * 1024;
    860       1.23  rearnsha 		break;
    861       1.23  rearnsha 	case 4:
    862       1.46  rearnsha 		/* With 256M of memory there is no wrap-around.  */
    863       1.46  rearnsha 		*memsize = 256 * 1024 * 1024 - *memstart;
    864       1.23  rearnsha 		break;
    865       1.23  rearnsha 	default:
    866       1.23  rearnsha 		printf("CM_SDRAM retuns unknown value, using 16M\n");
    867       1.23  rearnsha 		*memsize = 16 * 1024 * 1024;
    868       1.23  rearnsha 		break;
    869       1.23  rearnsha 	}
    870        1.1  rearnsha }
    871