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      1  1.43   msaitoh /*	$NetBSD: g42xxeb_machdep.c,v 1.43 2024/05/13 00:08:06 msaitoh Exp $ */
      2   1.1       bsh 
      3   1.1       bsh /*
      4  1.36     skrll  * Copyright (c) 2002, 2003, 2004, 2005  Genetec Corporation.
      5   1.1       bsh  * All rights reserved.
      6   1.1       bsh  *
      7   1.1       bsh  * Written by Hiroyuki Bessho for Genetec Corporation.
      8   1.1       bsh  *
      9   1.1       bsh  * Redistribution and use in source and binary forms, with or without
     10   1.1       bsh  * modification, are permitted provided that the following conditions
     11   1.1       bsh  * are met:
     12   1.1       bsh  * 1. Redistributions of source code must retain the above copyright
     13   1.1       bsh  *    notice, this list of conditions and the following disclaimer.
     14   1.1       bsh  * 2. Redistributions in binary form must reproduce the above copyright
     15   1.1       bsh  *    notice, this list of conditions and the following disclaimer in the
     16   1.1       bsh  *    documentation and/or other materials provided with the distribution.
     17  1.36     skrll  * 3. The name of Genetec Corporation may not be used to endorse or
     18   1.1       bsh  *    promote products derived from this software without specific prior
     19   1.1       bsh  *    written permission.
     20   1.1       bsh  *
     21   1.1       bsh  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
     22   1.1       bsh  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23   1.1       bsh  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24   1.1       bsh  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
     25   1.1       bsh  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26   1.1       bsh  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27   1.1       bsh  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28   1.1       bsh  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29   1.1       bsh  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30   1.1       bsh  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31   1.1       bsh  * POSSIBILITY OF SUCH DAMAGE.
     32   1.1       bsh  *
     33  1.36     skrll  * Machine dependent functions for kernel setup for Genetec G4250EBX
     34   1.1       bsh  * evaluation board.
     35  1.36     skrll  *
     36   1.1       bsh  * Based on iq80310_machhdep.c
     37   1.1       bsh  */
     38   1.1       bsh /*
     39   1.1       bsh  * Copyright (c) 2001 Wasabi Systems, Inc.
     40   1.1       bsh  * All rights reserved.
     41   1.1       bsh  *
     42   1.1       bsh  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
     43   1.1       bsh  *
     44   1.1       bsh  * Redistribution and use in source and binary forms, with or without
     45   1.1       bsh  * modification, are permitted provided that the following conditions
     46   1.1       bsh  * are met:
     47   1.1       bsh  * 1. Redistributions of source code must retain the above copyright
     48   1.1       bsh  *    notice, this list of conditions and the following disclaimer.
     49   1.1       bsh  * 2. Redistributions in binary form must reproduce the above copyright
     50   1.1       bsh  *    notice, this list of conditions and the following disclaimer in the
     51   1.1       bsh  *    documentation and/or other materials provided with the distribution.
     52   1.1       bsh  * 3. All advertising materials mentioning features or use of this software
     53   1.1       bsh  *    must display the following acknowledgement:
     54   1.1       bsh  *	This product includes software developed for the NetBSD Project by
     55   1.1       bsh  *	Wasabi Systems, Inc.
     56   1.1       bsh  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     57   1.1       bsh  *    or promote products derived from this software without specific prior
     58   1.1       bsh  *    written permission.
     59   1.1       bsh  *
     60   1.1       bsh  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     61   1.1       bsh  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     62   1.1       bsh  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     63   1.1       bsh  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     64   1.1       bsh  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     65   1.1       bsh  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     66   1.1       bsh  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     67   1.1       bsh  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     68   1.1       bsh  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     69   1.1       bsh  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     70   1.1       bsh  * POSSIBILITY OF SUCH DAMAGE.
     71   1.1       bsh  */
     72   1.1       bsh 
     73   1.1       bsh /*
     74   1.1       bsh  * Copyright (c) 1997,1998 Mark Brinicombe.
     75   1.1       bsh  * Copyright (c) 1997,1998 Causality Limited.
     76   1.1       bsh  * All rights reserved.
     77   1.1       bsh  *
     78   1.1       bsh  * Redistribution and use in source and binary forms, with or without
     79   1.1       bsh  * modification, are permitted provided that the following conditions
     80   1.1       bsh  * are met:
     81   1.1       bsh  * 1. Redistributions of source code must retain the above copyright
     82   1.1       bsh  *    notice, this list of conditions and the following disclaimer.
     83   1.1       bsh  * 2. Redistributions in binary form must reproduce the above copyright
     84   1.1       bsh  *    notice, this list of conditions and the following disclaimer in the
     85   1.1       bsh  *    documentation and/or other materials provided with the distribution.
     86   1.1       bsh  * 3. All advertising materials mentioning features or use of this software
     87   1.1       bsh  *    must display the following acknowledgement:
     88   1.1       bsh  *	This product includes software developed by Mark Brinicombe
     89   1.1       bsh  *	for the NetBSD Project.
     90   1.1       bsh  * 4. The name of the company nor the name of the author may be used to
     91   1.1       bsh  *    endorse or promote products derived from this software without specific
     92   1.1       bsh  *    prior written permission.
     93   1.1       bsh  *
     94   1.1       bsh  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     95   1.1       bsh  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     96   1.1       bsh  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     97   1.1       bsh  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     98   1.1       bsh  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     99   1.1       bsh  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    100   1.1       bsh  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    101   1.1       bsh  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    102   1.1       bsh  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    103   1.1       bsh  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    104   1.1       bsh  * SUCH DAMAGE.
    105   1.1       bsh  *
    106  1.23       wiz  * Machine dependent functions for kernel setup for Intel IQ80310 evaluation
    107   1.1       bsh  * boards using RedBoot firmware.
    108   1.1       bsh  */
    109   1.1       bsh 
    110  1.31     skrll #include "opt_arm_debug.h"
    111  1.32     skrll #include "opt_console.h"
    112   1.1       bsh #include "opt_ddb.h"
    113   1.1       bsh #include "opt_kgdb.h"
    114   1.1       bsh #include "opt_md.h"
    115   1.1       bsh #include "opt_com.h"
    116   1.1       bsh #include "lcd.h"
    117   1.1       bsh 
    118   1.1       bsh #include <sys/param.h>
    119   1.1       bsh #include <sys/device.h>
    120   1.1       bsh #include <sys/systm.h>
    121   1.1       bsh #include <sys/kernel.h>
    122   1.1       bsh #include <sys/exec.h>
    123   1.1       bsh #include <sys/proc.h>
    124   1.1       bsh #include <sys/msgbuf.h>
    125   1.1       bsh #include <sys/reboot.h>
    126   1.1       bsh #include <sys/termios.h>
    127   1.1       bsh #include <sys/ksyms.h>
    128  1.28      matt #include <sys/bus.h>
    129  1.28      matt #include <sys/cpu.h>
    130   1.1       bsh 
    131   1.1       bsh #include <uvm/uvm_extern.h>
    132   1.1       bsh 
    133   1.1       bsh #include <sys/conf.h>
    134   1.1       bsh #include <dev/cons.h>
    135   1.1       bsh #include <dev/md.h>
    136   1.1       bsh 
    137   1.1       bsh #include <machine/db_machdep.h>
    138   1.1       bsh #include <ddb/db_sym.h>
    139   1.1       bsh #include <ddb/db_extern.h>
    140   1.1       bsh #ifdef KGDB
    141   1.1       bsh #include <sys/kgdb.h>
    142   1.1       bsh #endif
    143   1.1       bsh 
    144   1.1       bsh #include <machine/bootconfig.h>
    145  1.28      matt #include <arm/locore.h>
    146   1.1       bsh #include <arm/undefined.h>
    147   1.1       bsh 
    148   1.1       bsh #include <arm/arm32/machdep.h>
    149   1.1       bsh 
    150   1.1       bsh #include <arm/xscale/pxa2x0reg.h>
    151   1.1       bsh #include <arm/xscale/pxa2x0var.h>
    152   1.1       bsh #include <arm/xscale/pxa2x0_gpio.h>
    153   1.1       bsh #include <evbarm/g42xxeb/g42xxeb_reg.h>
    154   1.1       bsh #include <evbarm/g42xxeb/g42xxeb_var.h>
    155   1.1       bsh 
    156   1.1       bsh /* Kernel text starts 2MB in from the bottom of the kernel address space. */
    157   1.1       bsh #define	KERNEL_TEXT_BASE	(KERNEL_BASE + 0x00200000)
    158   1.1       bsh #define	KERNEL_VM_BASE		(KERNEL_BASE + 0x01000000)
    159   1.1       bsh 
    160   1.1       bsh /*
    161   1.1       bsh  * The range 0xc1000000 - 0xccffffff is available for kernel VM space
    162   1.1       bsh  * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
    163   1.1       bsh  */
    164   1.1       bsh #define KERNEL_VM_SIZE		0x0C000000
    165   1.1       bsh 
    166   1.1       bsh BootConfig bootconfig;		/* Boot config storage */
    167   1.1       bsh char *boot_args = NULL;
    168   1.1       bsh char *boot_file = NULL;
    169   1.1       bsh 
    170  1.29      matt vaddr_t physical_start;
    171  1.29      matt vaddr_t physical_freestart;
    172  1.29      matt vaddr_t physical_freeend;
    173  1.29      matt vaddr_t physical_end;
    174   1.1       bsh u_int free_pages;
    175   1.1       bsh 
    176   1.1       bsh /*int debug_flags;*/
    177   1.1       bsh #ifndef PMAP_STATIC_L1S
    178   1.1       bsh int max_processes = 64;			/* Default number */
    179   1.1       bsh #endif	/* !PMAP_STATIC_L1S */
    180   1.1       bsh 
    181   1.1       bsh /* Physical and virtual addresses for some global pages */
    182   1.1       bsh pv_addr_t minidataclean;
    183   1.1       bsh 
    184  1.29      matt paddr_t msgbufphys;
    185   1.1       bsh 
    186   1.1       bsh #define KERNEL_PT_SYS		0	/* Page table for mapping proc0 zero page */
    187   1.1       bsh #define KERNEL_PT_KERNEL	1	/* Page table for mapping kernel */
    188   1.1       bsh #define	KERNEL_PT_KERNEL_NUM	4
    189   1.1       bsh #define KERNEL_PT_VMDATA	(KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM)
    190   1.1       bsh 				        /* Page tables for mapping kernel VM */
    191   1.1       bsh #define	KERNEL_PT_VMDATA_NUM	4	/* start with 16MB of KVM */
    192   1.1       bsh #define NUM_KERNEL_PTS		(KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
    193   1.1       bsh 
    194   1.1       bsh pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
    195   1.1       bsh 
    196   1.1       bsh /* Prototypes */
    197   1.1       bsh 
    198   1.1       bsh #if 0
    199   1.1       bsh void	process_kernel_args(char *);
    200   1.1       bsh #endif
    201   1.1       bsh 
    202   1.1       bsh void	consinit(void);
    203   1.1       bsh void	kgdb_port_init(void);
    204   1.1       bsh void	change_clock(uint32_t v);
    205   1.1       bsh 
    206   1.1       bsh bs_protos(bs_notimpl);
    207   1.1       bsh 
    208   1.1       bsh #include "com.h"
    209   1.1       bsh #if NCOM > 0
    210   1.1       bsh #include <dev/ic/comreg.h>
    211   1.1       bsh #include <dev/ic/comvar.h>
    212   1.1       bsh #endif
    213   1.1       bsh 
    214   1.1       bsh #ifndef CONSPEED
    215   1.1       bsh #define CONSPEED B115200	/* What RedBoot uses */
    216   1.1       bsh #endif
    217   1.1       bsh #ifndef CONMODE
    218   1.1       bsh #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
    219   1.1       bsh #endif
    220   1.1       bsh 
    221   1.1       bsh int comcnspeed = CONSPEED;
    222   1.1       bsh int comcnmode = CONMODE;
    223   1.1       bsh 
    224  1.11  kiyohara static struct pxa2x0_gpioconf boarddep_gpioconf[] = {
    225  1.11  kiyohara 	{ 44, GPIO_ALT_FN_1_IN },	/* BTCST */
    226  1.11  kiyohara 	{ 45, GPIO_ALT_FN_2_OUT },	/* BTRST */
    227  1.11  kiyohara 
    228  1.11  kiyohara 	{ -1 }
    229  1.11  kiyohara };
    230  1.11  kiyohara static struct pxa2x0_gpioconf *g42xxeb_gpioconf[] = {
    231  1.11  kiyohara 	pxa25x_com_btuart_gpioconf,
    232  1.11  kiyohara 	pxa25x_com_ffuart_gpioconf,
    233  1.11  kiyohara #if 0
    234  1.11  kiyohara 	pxa25x_com_stuart_gpioconf,
    235  1.11  kiyohara 	pxa25x_pxaacu_gpioconf,
    236  1.11  kiyohara #endif
    237  1.11  kiyohara 	boarddep_gpioconf,
    238  1.11  kiyohara 	NULL
    239  1.11  kiyohara };
    240  1.11  kiyohara 
    241   1.1       bsh /*
    242   1.1       bsh  * void cpu_reboot(int howto, char *bootstr)
    243   1.1       bsh  *
    244   1.1       bsh  * Reboots the system
    245   1.1       bsh  *
    246   1.1       bsh  * Deal with any syncing, unmounting, dumping and shutdown hooks,
    247   1.1       bsh  * then reset the CPU.
    248   1.1       bsh  */
    249   1.1       bsh void
    250   1.1       bsh cpu_reboot(int howto, char *bootstr)
    251   1.1       bsh {
    252   1.1       bsh #ifdef DIAGNOSTIC
    253   1.1       bsh 	/* info */
    254   1.1       bsh 	printf("boot: howto=%08x curproc=%p\n", howto, curproc);
    255   1.1       bsh #endif
    256   1.1       bsh 
    257   1.1       bsh 	/*
    258   1.1       bsh 	 * If we are still cold then hit the air brakes
    259   1.1       bsh 	 * and crash to earth fast
    260   1.1       bsh 	 */
    261   1.1       bsh 	if (cold) {
    262   1.1       bsh 		doshutdownhooks();
    263  1.15    dyoung 		pmf_system_shutdown(boothowto);
    264   1.1       bsh 		printf("The operating system has halted.\n");
    265   1.1       bsh 		printf("Please press any key to reboot.\n\n");
    266   1.1       bsh 		cngetc();
    267   1.1       bsh 		printf("rebooting...\n");
    268   1.1       bsh 		cpu_reset();
    269   1.1       bsh 		/*NOTREACHED*/
    270   1.1       bsh 	}
    271   1.1       bsh 
    272   1.1       bsh 	/* Disable console buffering */
    273   1.1       bsh /*	cnpollc(1);*/
    274   1.1       bsh 
    275   1.1       bsh 	/*
    276   1.1       bsh 	 * If RB_NOSYNC was not specified sync the discs.
    277   1.1       bsh 	 * Note: Unless cold is set to 1 here, syslogd will die during the
    278   1.1       bsh 	 * unmount.  It looks like syslogd is getting woken up only to find
    279   1.1       bsh 	 * that it cannot page part of the binary in as the filesystem has
    280   1.1       bsh 	 * been unmounted.
    281   1.1       bsh 	 */
    282   1.1       bsh 	if (!(howto & RB_NOSYNC))
    283   1.1       bsh 		bootsync();
    284   1.1       bsh 
    285   1.1       bsh 	/* Say NO to interrupts */
    286   1.1       bsh 	splhigh();
    287   1.1       bsh 
    288   1.1       bsh 	/* Do a dump if requested. */
    289   1.1       bsh 	if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
    290   1.1       bsh 		dumpsys();
    291  1.36     skrll 
    292   1.1       bsh 	/* Run any shutdown hooks */
    293   1.1       bsh 	doshutdownhooks();
    294   1.1       bsh 
    295  1.15    dyoung 	pmf_system_shutdown(boothowto);
    296  1.15    dyoung 
    297   1.1       bsh 	/* Make sure IRQ's are disabled */
    298   1.1       bsh 	IRQdisable;
    299   1.1       bsh 
    300   1.1       bsh 	if (howto & RB_HALT) {
    301   1.1       bsh 		printf("The operating system has halted.\n");
    302   1.1       bsh 		printf("Please press any key to reboot.\n\n");
    303   1.1       bsh 		cngetc();
    304   1.1       bsh 	}
    305   1.1       bsh 
    306   1.1       bsh 	printf("rebooting...\n");
    307   1.1       bsh 	cpu_reset();
    308   1.1       bsh 	/*NOTREACHED*/
    309   1.1       bsh }
    310   1.1       bsh 
    311   1.6     perry static inline
    312   1.1       bsh pd_entry_t *
    313   1.1       bsh read_ttb(void)
    314   1.1       bsh {
    315   1.1       bsh   long ttb;
    316   1.1       bsh 
    317   1.6     perry   __asm volatile("mrc	p15, 0, %0, c2, c0, 0" : "=r" (ttb));
    318   1.1       bsh 
    319   1.1       bsh 
    320   1.1       bsh   return (pd_entry_t *)(ttb & ~((1<<14)-1));
    321   1.1       bsh }
    322   1.1       bsh 
    323   1.1       bsh /*
    324   1.2       bsh  * Static device mappings. These peripheral registers are mapped at
    325   1.2       bsh  * fixed virtual addresses very early in initarm() so that we can use
    326   1.2       bsh  * them while booting the kernel, and stay at the same address
    327   1.2       bsh  * throughout whole kernel's life time.
    328   1.2       bsh  *
    329   1.2       bsh  * We use this table twice; once with bootstrap page table, and once
    330   1.2       bsh  * with kernel's page table which we build up in initarm().
    331   1.2       bsh  *
    332   1.2       bsh  * Since we map these registers into the bootstrap page table using
    333   1.2       bsh  * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map
    334   1.2       bsh  * registers segment-aligned and segment-rounded in order to avoid
    335   1.2       bsh  * using the 2nd page tables.
    336   1.1       bsh  */
    337   1.2       bsh 
    338   1.2       bsh static const struct pmap_devmap g42xxeb_devmap[] = {
    339  1.40     skrll     DEVMAP_ENTRY(
    340   1.1       bsh 	    G42XXEB_PLDREG_VBASE,
    341  1.40     skrll 	    G42XXEB_PLDREG_BASE,
    342  1.40     skrll 	    G42XXEB_PLDREG_SIZE
    343  1.40     skrll     ),
    344  1.40     skrll     DEVMAP_ENTRY(
    345   1.1       bsh 	    G42XXEB_GPIO_VBASE,
    346  1.40     skrll 	    PXA2X0_GPIO_BASE,
    347  1.40     skrll 	    PXA250_GPIO_SIZE
    348  1.40     skrll     ),
    349  1.40     skrll     DEVMAP_ENTRY(
    350   1.1       bsh 	    G42XXEB_CLKMAN_VBASE,
    351  1.40     skrll 	    PXA2X0_CLKMAN_BASE,
    352  1.40     skrll 	    PXA2X0_CLKMAN_SIZE
    353  1.40     skrll     ),
    354  1.40     skrll     DEVMAP_ENTRY(
    355   1.1       bsh 	    G42XXEB_INTCTL_VBASE,
    356  1.40     skrll 	    PXA2X0_INTCTL_BASE,
    357  1.40     skrll 	    PXA2X0_INTCTL_SIZE
    358  1.40     skrll     ),
    359  1.40     skrll     DEVMAP_ENTRY(
    360   1.2       bsh 	    G42XXEB_FFUART_VBASE,
    361  1.40     skrll 	    PXA2X0_FFUART_BASE,
    362  1.40     skrll 	    4 * COM_NPORTS
    363  1.40     skrll     ),
    364  1.40     skrll     DEVMAP_ENTRY(
    365   1.2       bsh 	    G42XXEB_BTUART_VBASE,
    366  1.40     skrll 	    PXA2X0_BTUART_BASE,
    367  1.40     skrll 	    4 * COM_NPORTS
    368  1.40     skrll     ),
    369  1.40     skrll     DEVMAP_ENTRY_END
    370   1.1       bsh };
    371   1.1       bsh 
    372   1.1       bsh /*
    373  1.35     skrll  * vaddr_t initarm(...)
    374   1.1       bsh  *
    375   1.1       bsh  * Initial entry point on startup. This gets called before main() is
    376   1.1       bsh  * entered.
    377   1.1       bsh  * It should be responsible for setting up everything that must be
    378   1.1       bsh  * in place when main is called.
    379   1.1       bsh  * This includes
    380   1.1       bsh  *   Taking a copy of the boot configuration structure.
    381   1.1       bsh  *   Initialising the physical console so characters can be printed.
    382   1.1       bsh  *   Setting up page tables for the kernel
    383   1.1       bsh  *   Relocating the kernel to the bottom of physical memory
    384   1.1       bsh  */
    385  1.35     skrll vaddr_t
    386   1.1       bsh initarm(void *arg)
    387   1.1       bsh {
    388   1.1       bsh 	int loop;
    389   1.1       bsh 	int loop1;
    390   1.1       bsh 	u_int l1pagetable;
    391   1.1       bsh 	paddr_t memstart;
    392   1.1       bsh 	psize_t memsize;
    393   1.1       bsh 	int led_data = 1;
    394   1.1       bsh 
    395   1.1       bsh #define LEDSTEP_P() ioreg8_write(G42XXEB_PLDREG_BASE+G42XXEB_LED, led_data++)
    396   1.1       bsh #define LEDSTEP() pldreg8_write(G42XXEB_LED, led_data++);
    397   1.1       bsh 
    398   1.1       bsh 	/* use physical address until pagetable is set */
    399   1.1       bsh 	LEDSTEP_P();
    400   1.1       bsh 
    401   1.2       bsh 	/* map some peripheral registers at static I/O area */
    402   1.2       bsh 	pmap_devmap_bootstrap((vaddr_t)read_ttb(), g42xxeb_devmap);
    403   1.2       bsh 
    404   1.2       bsh 	LEDSTEP_P();
    405   1.2       bsh 
    406   1.7     lukem 	/* start 32.768 kHz OSC */
    407   1.2       bsh 	ioreg_write(G42XXEB_CLKMAN_VBASE + 0x08, 2);
    408   1.2       bsh 	/* Get ready for splfoo() */
    409   1.2       bsh 	pxa2x0_intr_bootstrap(G42XXEB_INTCTL_VBASE);
    410   1.2       bsh 
    411   1.2       bsh 	LEDSTEP();
    412   1.1       bsh 
    413   1.1       bsh 	/*
    414   1.1       bsh 	 * Heads up ... Setup the CPU / MMU / TLB functions
    415   1.1       bsh 	 */
    416   1.1       bsh 	if (set_cpufuncs())
    417   1.1       bsh 		panic("cpu not recognized!");
    418   1.1       bsh 
    419   1.2       bsh 	LEDSTEP();
    420   1.1       bsh 
    421   1.1       bsh 	/*
    422   1.1       bsh 	 * Okay, RedBoot has provided us with the following memory map:
    423   1.1       bsh 	 *
    424  1.36     skrll 	 * Physical Address Range     Description
    425  1.36     skrll 	 * -----------------------    ----------------------------------
    426   1.1       bsh 	 * 0x00000000 - 0x01ffffff    flash Memory   (32MB)
    427   1.1       bsh 	 * 0x04000000 - 0x05ffffff    Application flash Memory  (32MB)
    428   1.1       bsh 	 * 0x08000000 - 0x080000ff    I/O baseboard registers
    429   1.1       bsh 	 * 0x0c000000 - 0x0c0fffff    Ethernet Controller
    430   1.1       bsh 	 * 0x14000000 - 0x17ffffff    Expansion Card (64MB)
    431   1.1       bsh 	 * 0x40000000 - 0x480fffff    Processor Registers
    432   1.1       bsh 	 * 0xa0000000 - 0xa3ffffff    SDRAM Bank 0 (64MB)
    433   1.1       bsh 	 *
    434   1.1       bsh 	 *
    435  1.36     skrll 	 * Virtual Address Range    X C B  Description
    436  1.36     skrll 	 * -----------------------  - - -  ----------------------------------
    437  1.36     skrll 	 * 0x00000000 - 0x00003fff  N Y Y  SDRAM
    438   1.1       bsh 	 * 0x00004000 - 0x01ffffff  N Y N  ROM
    439   1.1       bsh 	 * 0x08000000 - 0x080fffff  N N N  I/O baseboard registers
    440   1.1       bsh 	 * 0x0a000000 - 0x0a0fffff  N N N  SRAM
    441   1.1       bsh 	 * 0x40000000 - 0x480fffff  N N N  Processor Registers
    442  1.36     skrll 	 * 0xa0000000 - 0xa000ffff  N Y N  RedBoot SDRAM
    443   1.1       bsh 	 * 0xa0017000 - 0xa3ffffff  Y Y Y  SDRAM
    444  1.36     skrll 	 * 0xc0000000 - 0xcfffffff  Y Y Y  Cache Flush Region
    445   1.1       bsh 	 * (done by this routine)
    446   1.1       bsh 	 * 0xfd000000 - 0xfd0000ff  N N N  I/O baseboard registers
    447   1.2       bsh 	 * 0xfd100000 - 0xfd3fffff  N N N  Processor Registers.
    448   1.2       bsh 	 * 0xfd400000 - 0xfd4fffff  N N N  FF-UART
    449   1.2       bsh 	 * 0xfd500000 - 0xfd5fffff  N N N  BT-UART
    450   1.1       bsh 	 *
    451   1.3       bsh 	 * RedBoot's first level page table is at 0xa0004000.  There
    452   1.3       bsh 	 * are also 2 second-level tables at 0xa0008000 and
    453   1.3       bsh 	 * 0xa0008400.  We will continue to use them until we switch to
    454  1.21  uebayasi 	 * our pagetable by cpu_setttb().
    455   1.1       bsh 	 */
    456   1.1       bsh 
    457   1.1       bsh 	cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
    458   1.1       bsh 
    459   1.1       bsh 	LEDSTEP();
    460   1.1       bsh 
    461   1.1       bsh 	/* setup GPIO for BTUART, in case bootloader doesn't take care of it */
    462   1.1       bsh 	pxa2x0_gpio_bootstrap(G42XXEB_GPIO_VBASE);
    463  1.11  kiyohara 	pxa2x0_gpio_config(g42xxeb_gpioconf);
    464   1.1       bsh 
    465   1.1       bsh 	LEDSTEP();
    466   1.1       bsh 
    467   1.1       bsh 	consinit();
    468   1.1       bsh #ifdef KGDB
    469   1.1       bsh 	LEDSTEP();
    470   1.1       bsh 	kgdb_port_init();
    471   1.1       bsh #endif
    472   1.1       bsh 
    473   1.1       bsh 	LEDSTEP();
    474   1.1       bsh 
    475   1.1       bsh 	/* Talk to the user */
    476   1.1       bsh 	printf("\nNetBSD/evbarm (g42xxeb) booting ...\n");
    477   1.1       bsh 
    478   1.1       bsh #if 0
    479   1.1       bsh 	/*
    480   1.1       bsh 	 * Examine the boot args string for options we need to know about
    481   1.1       bsh 	 * now.
    482   1.1       bsh 	 */
    483   1.1       bsh 	process_kernel_args((char *)nwbootinfo.bt_args);
    484   1.1       bsh #endif
    485   1.1       bsh 
    486   1.1       bsh 	memstart = 0xa0000000;
    487   1.1       bsh 	memsize = 0x04000000;		/* 64MB */
    488   1.1       bsh 
    489   1.1       bsh 	printf("initarm: Configuring system ...\n");
    490   1.1       bsh 
    491   1.1       bsh 	/* Fake bootconfig structure for the benefit of pmap.c */
    492  1.10       wiz 	/* XXX must make the memory description h/w independent */
    493   1.1       bsh 	bootconfig.dramblocks = 1;
    494   1.1       bsh 	bootconfig.dram[0].address = memstart;
    495   1.1       bsh 	bootconfig.dram[0].pages = memsize / PAGE_SIZE;
    496   1.1       bsh 
    497   1.1       bsh 	/*
    498  1.38    andvar 	 * Set up the variables that define the availability of
    499   1.1       bsh 	 * physical memory.  For now, we're going to set
    500   1.1       bsh 	 * physical_freestart to 0xa0200000 (where the kernel
    501   1.1       bsh 	 * was loaded), and allocate the memory we need downwards.
    502   1.1       bsh 	 * If we get too close to the L1 table that we set up, we
    503   1.1       bsh 	 * will panic.  We will update physical_freestart and
    504   1.1       bsh 	 * physical_freeend later to reflect what pmap_bootstrap()
    505   1.1       bsh 	 * wants to see.
    506   1.1       bsh 	 *
    507   1.1       bsh 	 * XXX pmap_bootstrap() needs an enema.
    508   1.1       bsh 	 */
    509   1.1       bsh 	physical_start = bootconfig.dram[0].address;
    510   1.1       bsh 	physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE);
    511   1.1       bsh 
    512   1.1       bsh 	physical_freestart = 0xa0009000UL;
    513   1.1       bsh 	physical_freeend = 0xa0200000UL;
    514   1.1       bsh 
    515   1.1       bsh 	physmem = (physical_end - physical_start) / PAGE_SIZE;
    516   1.1       bsh 
    517   1.1       bsh #ifdef VERBOSE_INIT_ARM
    518   1.1       bsh 	/* Tell the user about the memory */
    519  1.42    andvar 	printf("physmemory: 0x%"PRIxPSIZE" pages at 0x%08lx -> 0x%08lx\n", physmem,
    520   1.1       bsh 	    physical_start, physical_end - 1);
    521   1.1       bsh #endif
    522   1.1       bsh 
    523   1.1       bsh 	/*
    524   1.1       bsh 	 * Okay, the kernel starts 2MB in from the bottom of physical
    525   1.1       bsh 	 * memory.  We are going to allocate our bootstrap pages downwards
    526   1.1       bsh 	 * from there.
    527   1.1       bsh 	 *
    528   1.1       bsh 	 * We need to allocate some fixed page tables to get the kernel
    529   1.1       bsh 	 * going.  We allocate one page directory and a number of page
    530   1.1       bsh 	 * tables and store the physical addresses in the kernel_pt_table
    531   1.1       bsh 	 * array.
    532   1.1       bsh 	 *
    533   1.1       bsh 	 * The kernel page directory must be on a 16K boundary.  The page
    534  1.39    andvar 	 * tables must be on 4K boundaries.  What we do is allocate the
    535   1.1       bsh 	 * page directory on the first 16K boundary that we encounter, and
    536   1.1       bsh 	 * the page tables on 4K boundaries otherwise.  Since we allocate
    537   1.1       bsh 	 * at least 3 L2 page tables, we are guaranteed to encounter at
    538   1.1       bsh 	 * least one 16K aligned region.
    539   1.1       bsh 	 */
    540   1.1       bsh 
    541   1.1       bsh #ifdef VERBOSE_INIT_ARM
    542   1.1       bsh 	printf("Allocating page tables\n");
    543   1.1       bsh #endif
    544   1.1       bsh 
    545   1.1       bsh 	free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
    546   1.1       bsh 
    547   1.1       bsh #ifdef VERBOSE_INIT_ARM
    548   1.1       bsh 	printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
    549   1.1       bsh 	       physical_freestart, free_pages, free_pages);
    550   1.1       bsh #endif
    551   1.1       bsh 
    552   1.1       bsh 	/* Define a macro to simplify memory allocation */
    553   1.1       bsh #define	valloc_pages(var, np)				\
    554   1.1       bsh 	alloc_pages((var).pv_pa, (np));			\
    555   1.1       bsh 	(var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
    556   1.1       bsh 
    557   1.1       bsh #define alloc_pages(var, np)				\
    558   1.1       bsh 	physical_freeend -= ((np) * PAGE_SIZE);		\
    559   1.1       bsh 	if (physical_freeend < physical_freestart)	\
    560   1.1       bsh 		panic("initarm: out of memory");	\
    561   1.1       bsh 	(var) = physical_freeend;			\
    562   1.1       bsh 	free_pages -= (np);				\
    563   1.1       bsh 	memset((char *)(var), 0, ((np) * PAGE_SIZE));
    564   1.1       bsh 
    565   1.1       bsh 	loop1 = 0;
    566   1.1       bsh 	for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
    567   1.1       bsh 		/* Are we 16KB aligned for an L1 ? */
    568   1.1       bsh 		if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
    569   1.1       bsh 		    && kernel_l1pt.pv_pa == 0) {
    570   1.1       bsh 			valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
    571   1.1       bsh 		} else {
    572   1.1       bsh 			valloc_pages(kernel_pt_table[loop1],
    573   1.1       bsh 			    L2_TABLE_SIZE / PAGE_SIZE);
    574   1.1       bsh 			++loop1;
    575   1.1       bsh 		}
    576   1.1       bsh 	}
    577   1.1       bsh 
    578   1.1       bsh 	/* This should never be able to happen but better confirm that. */
    579   1.1       bsh 	if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
    580   1.1       bsh 		panic("initarm: Failed to align the kernel page directory");
    581   1.1       bsh 
    582   1.1       bsh 	LEDSTEP();
    583   1.1       bsh 
    584   1.1       bsh 	/*
    585   1.1       bsh 	 * Allocate a page for the system page mapped to V0x00000000
    586   1.1       bsh 	 * This page will just contain the system vectors and can be
    587   1.1       bsh 	 * shared by all processes.
    588   1.1       bsh 	 */
    589   1.1       bsh 	alloc_pages(systempage.pv_pa, 1);
    590   1.1       bsh 
    591   1.1       bsh 	/* Allocate stacks for all modes */
    592   1.1       bsh 	valloc_pages(irqstack, IRQ_STACK_SIZE);
    593   1.1       bsh 	valloc_pages(abtstack, ABT_STACK_SIZE);
    594   1.1       bsh 	valloc_pages(undstack, UND_STACK_SIZE);
    595   1.1       bsh 	valloc_pages(kernelstack, UPAGES);
    596   1.1       bsh 
    597   1.1       bsh 	/* Allocate enough pages for cleaning the Mini-Data cache. */
    598   1.1       bsh 	KASSERT(xscale_minidata_clean_size <= PAGE_SIZE);
    599   1.1       bsh 	valloc_pages(minidataclean, 1);
    600   1.1       bsh 
    601   1.1       bsh #ifdef VERBOSE_INIT_ARM
    602   1.1       bsh 	printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
    603  1.36     skrll 	    irqstack.pv_va);
    604   1.1       bsh 	printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
    605  1.36     skrll 	    abtstack.pv_va);
    606   1.1       bsh 	printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
    607  1.36     skrll 	    undstack.pv_va);
    608   1.1       bsh 	printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
    609  1.36     skrll 	    kernelstack.pv_va);
    610   1.1       bsh #endif
    611   1.1       bsh 
    612   1.1       bsh 	/*
    613   1.1       bsh 	 * XXX Defer this to later so that we can reclaim the memory
    614   1.1       bsh 	 * XXX used by the RedBoot page tables.
    615   1.1       bsh 	 */
    616   1.1       bsh 	alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
    617   1.1       bsh 
    618   1.1       bsh 	/*
    619   1.1       bsh 	 * Ok we have allocated physical pages for the primary kernel
    620   1.1       bsh 	 * page tables
    621   1.1       bsh 	 */
    622   1.1       bsh 
    623   1.1       bsh #ifdef VERBOSE_INIT_ARM
    624   1.1       bsh 	printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
    625   1.1       bsh #endif
    626   1.1       bsh 
    627   1.1       bsh 	/*
    628   1.1       bsh 	 * Now we start construction of the L1 page table
    629   1.1       bsh 	 * We start by mapping the L2 page tables into the L1.
    630   1.1       bsh 	 * This means that we can replace L1 mappings later on if necessary
    631   1.1       bsh 	 */
    632   1.1       bsh 	l1pagetable = kernel_l1pt.pv_pa;
    633   1.1       bsh 
    634   1.1       bsh 	/* Map the L2 pages tables in the L1 page table */
    635   1.1       bsh 	pmap_link_l2pt(l1pagetable, 0x00000000,
    636   1.1       bsh 	    &kernel_pt_table[KERNEL_PT_SYS]);
    637   1.1       bsh 	for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
    638   1.1       bsh 		pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
    639   1.1       bsh 		    &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
    640   1.1       bsh 	for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
    641   1.1       bsh 		pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
    642   1.1       bsh 		    &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
    643   1.1       bsh 
    644   1.1       bsh 	/* update the top of the kernel VM */
    645   1.1       bsh 	pmap_curmaxkvaddr =
    646   1.1       bsh 	    KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
    647   1.1       bsh 
    648   1.1       bsh #ifdef VERBOSE_INIT_ARM
    649   1.1       bsh 	printf("Mapping kernel\n");
    650   1.1       bsh #endif
    651   1.1       bsh 
    652   1.1       bsh 	/* Now we fill in the L2 pagetable for the kernel static code/data */
    653   1.1       bsh 	{
    654   1.1       bsh 		extern char etext[], _end[];
    655   1.1       bsh 		size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
    656   1.1       bsh 		size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
    657   1.1       bsh 		u_int logical;
    658   1.1       bsh 
    659   1.1       bsh 		textsize = (textsize + PGOFSET) & ~PGOFSET;
    660   1.1       bsh 		totalsize = (totalsize + PGOFSET) & ~PGOFSET;
    661  1.36     skrll 
    662   1.1       bsh 		logical = 0x00200000;	/* offset of kernel in RAM */
    663   1.1       bsh 
    664   1.1       bsh 		logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
    665   1.1       bsh 		    physical_start + logical, textsize,
    666   1.1       bsh 		    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    667   1.1       bsh 		logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
    668   1.1       bsh 		    physical_start + logical, totalsize - textsize,
    669   1.1       bsh 		    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    670   1.1       bsh 	}
    671   1.1       bsh 
    672   1.1       bsh #ifdef VERBOSE_INIT_ARM
    673   1.1       bsh 	printf("Constructing L2 page tables\n");
    674   1.1       bsh #endif
    675   1.1       bsh 
    676   1.1       bsh 	/* Map the stack pages */
    677   1.1       bsh 	pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
    678   1.1       bsh 	    IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    679   1.1       bsh 	pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
    680   1.1       bsh 	    ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    681   1.1       bsh 	pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
    682   1.1       bsh 	    UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    683   1.1       bsh 	pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
    684   1.1       bsh 	    UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
    685   1.1       bsh 
    686   1.1       bsh 	pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
    687   1.1       bsh 	    L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE);
    688   1.1       bsh 
    689   1.1       bsh 	for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
    690   1.1       bsh 		pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
    691   1.1       bsh 		    kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
    692   1.1       bsh 		    VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
    693   1.1       bsh 	}
    694   1.1       bsh 
    695   1.1       bsh 	/* Map the Mini-Data cache clean area. */
    696   1.1       bsh 	xscale_setup_minidata(l1pagetable, minidataclean.pv_va,
    697   1.1       bsh 	    minidataclean.pv_pa);
    698   1.1       bsh 
    699   1.1       bsh 	/* Map the vector page. */
    700   1.1       bsh #if 1
    701   1.1       bsh 	/* MULTI-ICE requires that page 0 is NC/NB so that it can download the
    702   1.1       bsh 	 * cache-clean code there.  */
    703   1.1       bsh 	pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
    704   1.1       bsh 	    VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE);
    705   1.1       bsh #else
    706   1.1       bsh 	pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
    707   1.1       bsh 	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
    708   1.1       bsh #endif
    709   1.1       bsh 
    710   1.1       bsh 	/*
    711   1.1       bsh 	 * map integrated peripherals at same address in l1pagetable
    712   1.1       bsh 	 * so that we can continue to use console.
    713   1.1       bsh 	 */
    714   1.2       bsh 	pmap_devmap_bootstrap(l1pagetable, g42xxeb_devmap);
    715   1.1       bsh 
    716   1.1       bsh 	/*
    717   1.1       bsh 	 * Give the XScale global cache clean code an appropriately
    718   1.1       bsh 	 * sized chunk of unmapped VA space starting at 0xff000000
    719   1.1       bsh 	 * (our device mappings end before this address).
    720   1.1       bsh 	 */
    721   1.1       bsh 	xscale_cache_clean_addr = 0xff000000U;
    722   1.1       bsh 
    723   1.1       bsh 	/*
    724   1.1       bsh 	 * Now we have the real page tables in place so we can switch to them.
    725   1.1       bsh 	 * Once this is done we will be running with the REAL kernel page
    726   1.1       bsh 	 * tables.
    727   1.1       bsh 	 */
    728   1.1       bsh 
    729   1.1       bsh 	/*
    730   1.1       bsh 	 * Update the physical_freestart/physical_freeend/free_pages
    731   1.1       bsh 	 * variables.
    732   1.1       bsh 	 */
    733   1.1       bsh 	{
    734   1.1       bsh 		extern char _end[];
    735   1.1       bsh 
    736   1.1       bsh 		physical_freestart = physical_start +
    737   1.1       bsh 		    (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) -
    738   1.1       bsh 		     KERNEL_BASE);
    739   1.1       bsh 		physical_freeend = physical_end;
    740   1.1       bsh 		free_pages =
    741   1.1       bsh 		    (physical_freeend - physical_freestart) / PAGE_SIZE;
    742   1.1       bsh 	}
    743   1.1       bsh 
    744   1.1       bsh 	/* Switch tables */
    745   1.1       bsh #ifdef VERBOSE_INIT_ARM
    746   1.1       bsh 	printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
    747   1.1       bsh 	       physical_freestart, free_pages, free_pages);
    748   1.1       bsh 	printf("switching to new L1 page table  @%#lx...", kernel_l1pt.pv_pa);
    749   1.1       bsh #endif
    750   1.1       bsh 	LEDSTEP();
    751   1.1       bsh 
    752  1.27      matt 	cpu_setttb(kernel_l1pt.pv_pa, true);
    753   1.1       bsh 	cpu_tlb_flushID();
    754   1.1       bsh 	cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
    755   1.1       bsh 	LEDSTEP();
    756   1.1       bsh 
    757   1.1       bsh 	/*
    758   1.1       bsh 	 * Moved from cpu_startup() as data_abort_handler() references
    759   1.1       bsh 	 * this during uvm init
    760   1.1       bsh 	 */
    761  1.18     rmind 	uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
    762   1.1       bsh 
    763   1.1       bsh #ifdef VERBOSE_INIT_ARM
    764   1.1       bsh 	printf("bootstrap done.\n");
    765   1.1       bsh #endif
    766   1.1       bsh 
    767   1.1       bsh 	arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
    768   1.1       bsh 
    769   1.1       bsh 	/*
    770   1.1       bsh 	 * Pages were allocated during the secondary bootstrap for the
    771   1.1       bsh 	 * stacks for different CPU modes.
    772   1.1       bsh 	 * We must now set the r13 registers in the different CPU modes to
    773   1.1       bsh 	 * point to these stacks.
    774   1.1       bsh 	 * Since the ARM stacks use STMFD etc. we must set r13 to the top end
    775   1.1       bsh 	 * of the stack memory.
    776   1.1       bsh 	 */
    777   1.2       bsh #ifdef	VERBOSE_INIT_ARM
    778   1.1       bsh 	printf("init subsystems: stacks ");
    779   1.2       bsh #endif
    780   1.1       bsh 
    781   1.1       bsh 	set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
    782   1.1       bsh 	set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
    783   1.1       bsh 	set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
    784   1.1       bsh 
    785   1.1       bsh 	/*
    786   1.1       bsh 	 * Well we should set a data abort handler.
    787   1.1       bsh 	 * Once things get going this will change as we will need a proper
    788   1.1       bsh 	 * handler.
    789   1.1       bsh 	 * Until then we will use a handler that just panics but tells us
    790   1.1       bsh 	 * why.
    791   1.1       bsh 	 * Initialisation of the vectors will just panic on a data abort.
    792  1.43   msaitoh 	 * This just fills in a slightly better one.
    793   1.1       bsh 	 */
    794   1.2       bsh #ifdef	VERBOSE_INIT_ARM
    795   1.1       bsh 	printf("vectors ");
    796   1.2       bsh #endif
    797   1.1       bsh 	data_abort_handler_address = (u_int)data_abort_handler;
    798   1.1       bsh 	prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
    799   1.1       bsh 	undefined_handler_address = (u_int)undefinedinstruction_bounce;
    800   1.1       bsh 
    801   1.1       bsh 	/* Initialise the undefined instruction handlers */
    802   1.2       bsh #ifdef	VERBOSE_INIT_ARM
    803   1.1       bsh 	printf("undefined ");
    804   1.2       bsh #endif
    805   1.1       bsh 	undefined_init();
    806   1.1       bsh 
    807   1.1       bsh 	/* Load memory into UVM. */
    808   1.2       bsh #ifdef	VERBOSE_INIT_ARM
    809   1.1       bsh 	printf("page ");
    810   1.2       bsh #endif
    811  1.30    cherry 	uvm_md_init();
    812   1.1       bsh 	uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
    813   1.1       bsh 	    atop(physical_freestart), atop(physical_freeend),
    814   1.1       bsh 	    VM_FREELIST_DEFAULT);
    815   1.1       bsh 
    816  1.33     skrll 	/* Boot strap pmap telling it where managed kernel virtual memory is */
    817   1.2       bsh #ifdef	VERBOSE_INIT_ARM
    818   1.1       bsh 	printf("pmap ");
    819   1.2       bsh #endif
    820   1.1       bsh 	LEDSTEP();
    821  1.14      matt 	pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
    822   1.1       bsh 	LEDSTEP();
    823   1.1       bsh 
    824   1.1       bsh #ifdef __HAVE_MEMORY_DISK__
    825   1.1       bsh 	md_root_setconf(memory_disk, sizeof memory_disk);
    826   1.1       bsh #endif
    827   1.1       bsh 
    828   1.1       bsh #ifdef BOOTHOWTO
    829   1.1       bsh 	boothowto |= BOOTHOWTO;
    830   1.1       bsh #endif
    831   1.1       bsh 
    832   1.1       bsh 	{
    833   1.1       bsh 		uint8_t sw = pldreg8_read(G42XXEB_DIPSW);
    834   1.1       bsh 
    835   1.1       bsh 		if (0 == (sw & (1<<0)))
    836   1.1       bsh 			boothowto ^= RB_KDB;
    837   1.1       bsh 		if (0 == (sw & (1<<1)))
    838   1.1       bsh 			boothowto ^= RB_SINGLE;
    839   1.1       bsh 	}
    840   1.1       bsh 
    841   1.1       bsh 	LEDSTEP();
    842   1.1       bsh 
    843   1.1       bsh #ifdef KGDB
    844   1.1       bsh 	if (boothowto & RB_KDB) {
    845   1.1       bsh 		kgdb_debug_init = 1;
    846   1.1       bsh 		kgdb_connect(1);
    847   1.1       bsh 	}
    848   1.1       bsh #endif
    849   1.1       bsh 
    850   1.1       bsh #ifdef DDB
    851   1.1       bsh 	db_machine_init();
    852   1.1       bsh 
    853   1.1       bsh 	/* Firmware doesn't load symbols. */
    854   1.1       bsh 	ddb_init(0, NULL, NULL);
    855   1.1       bsh 
    856   1.1       bsh 	if (boothowto & RB_KDB)
    857   1.1       bsh 		Debugger();
    858   1.1       bsh #endif
    859   1.1       bsh 
    860   1.1       bsh 	pldreg8_write(G42XXEB_LED, 0);
    861   1.1       bsh 
    862   1.1       bsh 	/* We return the new stack pointer address */
    863  1.34     skrll 	return kernelstack.pv_va + USPACE_SVC_STACK_TOP;
    864   1.1       bsh }
    865   1.1       bsh 
    866   1.1       bsh #if 0
    867   1.1       bsh void
    868   1.1       bsh process_kernel_args(char *args)
    869   1.1       bsh {
    870   1.1       bsh 
    871   1.1       bsh 	boothowto = 0;
    872   1.1       bsh 
    873   1.1       bsh 	/* Make a local copy of the bootargs */
    874   1.1       bsh 	strncpy(bootargs, args, MAX_BOOT_STRING);
    875   1.1       bsh 
    876   1.1       bsh 	args = bootargs;
    877   1.1       bsh 	boot_file = bootargs;
    878   1.1       bsh 
    879   1.1       bsh 	/* Skip the kernel image filename */
    880   1.1       bsh 	while (*args != ' ' && *args != 0)
    881   1.1       bsh 		++args;
    882   1.1       bsh 
    883   1.1       bsh 	if (*args != 0)
    884   1.1       bsh 		*args++ = 0;
    885   1.1       bsh 
    886   1.1       bsh 	while (*args == ' ')
    887   1.1       bsh 		++args;
    888   1.1       bsh 
    889   1.1       bsh 	boot_args = args;
    890   1.1       bsh 
    891   1.1       bsh 	printf("bootfile: %s\n", boot_file);
    892   1.1       bsh 	printf("bootargs: %s\n", boot_args);
    893   1.1       bsh 
    894   1.1       bsh 	parse_mi_bootargs(boot_args);
    895   1.1       bsh }
    896   1.1       bsh #endif
    897   1.1       bsh 
    898   1.1       bsh #ifdef KGDB
    899   1.1       bsh #ifndef KGDB_DEVNAME
    900   1.1       bsh #define KGDB_DEVNAME "ffuart"
    901   1.1       bsh #endif
    902   1.1       bsh const char kgdb_devname[] = KGDB_DEVNAME;
    903   1.1       bsh 
    904   1.1       bsh #if (NCOM > 0)
    905   1.1       bsh #ifndef KGDB_DEVMODE
    906   1.1       bsh #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
    907   1.1       bsh #endif
    908   1.1       bsh int comkgdbmode = KGDB_DEVMODE;
    909   1.1       bsh #endif /* NCOM */
    910   1.1       bsh 
    911   1.1       bsh #endif /* KGDB */
    912   1.1       bsh 
    913   1.1       bsh 
    914   1.1       bsh void
    915   1.1       bsh consinit(void)
    916   1.1       bsh {
    917   1.1       bsh 	static int consinit_called = 0;
    918   1.1       bsh 	uint32_t ckenreg = ioreg_read(G42XXEB_CLKMAN_VBASE+CLKMAN_CKEN);
    919   1.1       bsh #if 0
    920   1.1       bsh 	char *console = CONSDEVNAME;
    921   1.1       bsh #endif
    922   1.1       bsh 
    923   1.1       bsh 	if (consinit_called != 0)
    924   1.1       bsh 		return;
    925   1.1       bsh 
    926   1.1       bsh 	consinit_called = 1;
    927   1.1       bsh 
    928   1.1       bsh #if NCOM > 0
    929   1.1       bsh 
    930   1.1       bsh #ifdef FFUARTCONSOLE
    931   1.1       bsh #ifdef KGDB
    932   1.1       bsh 	if (0 == strcmp(kgdb_devname, "ffuart")){
    933   1.1       bsh 		/* port is reserved for kgdb */
    934  1.36     skrll 	} else
    935   1.1       bsh #endif
    936  1.36     skrll 	if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_FFUART_BASE,
    937   1.1       bsh 		comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) {
    938   1.1       bsh #if 0
    939   1.1       bsh 		pxa2x0_clkman_config(CKEN_FFUART, 1);
    940   1.1       bsh #else
    941   1.1       bsh 		ioreg_write(G42XXEB_CLKMAN_VBASE+CLKMAN_CKEN,
    942   1.1       bsh 		    ckenreg|CKEN_FFUART);
    943   1.1       bsh #endif
    944   1.1       bsh 
    945   1.1       bsh 		return;
    946   1.1       bsh 	}
    947   1.1       bsh #endif /* FFUARTCONSOLE */
    948   1.1       bsh 
    949   1.1       bsh #ifdef BTUARTCONSOLE
    950   1.1       bsh #ifdef KGDB
    951   1.1       bsh 	if (0 == strcmp(kgdb_devname, "btuart")) {
    952   1.1       bsh 		/* port is reserved for kgdb */
    953   1.1       bsh 	} else
    954   1.1       bsh #endif
    955   1.1       bsh 	if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_BTUART_BASE,
    956   1.1       bsh 		comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) {
    957   1.1       bsh 		ioreg_write(G42XXEB_CLKMAN_VBASE+CLKMAN_CKEN,
    958   1.1       bsh 		    ckenreg|CKEN_BTUART);
    959   1.1       bsh 		return;
    960   1.1       bsh 	}
    961   1.1       bsh #endif /* BTUARTCONSOLE */
    962   1.1       bsh 
    963   1.1       bsh 
    964   1.1       bsh #endif /* NCOM */
    965   1.1       bsh 
    966   1.1       bsh }
    967   1.1       bsh 
    968   1.1       bsh #ifdef KGDB
    969   1.1       bsh void
    970   1.1       bsh kgdb_port_init(void)
    971   1.1       bsh {
    972   1.1       bsh #if (NCOM > 0) && defined(COM_PXA2X0)
    973   1.1       bsh 	paddr_t paddr = 0;
    974   1.1       bsh 	uint32_t ckenreg = ioreg_read(G42XXEB_CLKMAN_VBASE+CLKMAN_CKEN);
    975   1.1       bsh 
    976   1.1       bsh 	if (0 == strcmp(kgdb_devname, "ffuart")) {
    977   1.1       bsh 		paddr = PXA2X0_FFUART_BASE;
    978   1.1       bsh 		ckenreg |= CKEN_FFUART;
    979   1.1       bsh 	}
    980   1.1       bsh 	else if (0 == strcmp(kgdb_devname, "btuart")) {
    981   1.1       bsh 		paddr = PXA2X0_BTUART_BASE;
    982   1.1       bsh 		ckenreg |= CKEN_BTUART;
    983   1.1       bsh 	}
    984   1.1       bsh 
    985   1.1       bsh 	if (paddr &&
    986   1.1       bsh 	    0 == com_kgdb_attach(&pxa2x0_a4x_bs_tag, paddr,
    987   1.1       bsh 		kgdb_rate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode)) {
    988   1.1       bsh 
    989   1.1       bsh 		ioreg_write(G42XXEB_CLKMAN_VBASE+CLKMAN_CKEN, ckenreg);
    990   1.1       bsh 
    991   1.1       bsh 	}
    992   1.1       bsh 
    993   1.1       bsh #endif
    994   1.1       bsh }
    995   1.1       bsh #endif
    996   1.1       bsh 
    997