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      1 /*	$NetBSD: machdep.c,v 1.110 2024/03/05 14:15:29 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.110 2024/03/05 14:15:29 thorpej Exp $");
     36 
     37 #include "opt_compat_netbsd.h"
     38 #include "opt_ddb.h"
     39 
     40 #define _POWERPC_BUS_DMA_PRIVATE
     41 
     42 #include <sys/param.h>
     43 #include <sys/bus.h>
     44 #include <sys/conf.h>
     45 #include <sys/device.h>
     46 #include <sys/kernel.h>
     47 #include <sys/mount.h>
     48 #include <sys/reboot.h>
     49 #include <sys/systm.h>
     50 #include <sys/vnode.h>
     51 
     52 #include <uvm/uvm_extern.h>
     53 
     54 #include <machine/bebox.h>
     55 #include <machine/autoconf.h>
     56 #include <machine/bootinfo.h>
     57 #include <machine/powerpc.h>
     58 
     59 #include <powerpc/bat.h>
     60 #include <powerpc/pic/picvar.h>
     61 #include <powerpc/pio.h>
     62 #include <powerpc/prep_bus.h>
     63 #include <powerpc/psl.h>
     64 
     65 #include <dev/cons.h>
     66 
     67 #include "vga.h"
     68 #if (NVGA > 0)
     69 #include <dev/ic/mc6845reg.h>
     70 #include <dev/ic/pcdisplayvar.h>
     71 #include <dev/ic/vgareg.h>
     72 #include <dev/ic/vgavar.h>
     73 #endif
     74 
     75 #include "pckbc.h"
     76 #if (NPCKBC > 0)
     77 #include <dev/isa/isareg.h>
     78 #include <dev/ic/i8042reg.h>
     79 #include <dev/ic/pckbcvar.h>
     80 #include <dev/pckbport/pckbportvar.h>
     81 #endif
     82 
     83 #include "com.h"
     84 #if (NCOM > 0)
     85 #include <sys/termios.h>
     86 #include <dev/ic/comreg.h>
     87 #include <dev/ic/comvar.h>
     88 #endif
     89 
     90 /*
     91  * Global variables used here and there
     92  */
     93 char bootinfo[BOOTINFO_MAXSIZE];
     94 #define	MEMREGIONS	2
     95 struct mem_region physmemr[MEMREGIONS], availmemr[MEMREGIONS];
     96 char bootpath[256];
     97 struct pic_ops *isa_pic;
     98 extern int primary_pic;
     99 void initppc(u_long, u_long, u_int, void *);
    100 static void disable_device(const char *);
    101 void setup_bebox_intr(void);
    102 
    103 extern void *startsym, *endsym;
    104 
    105 void
    106 initppc(u_long startkernel, u_long endkernel, u_int args, void *btinfo)
    107 {
    108 	/*
    109 	 * copy bootinfo
    110 	 */
    111 	memcpy(bootinfo, btinfo, sizeof (bootinfo));
    112 
    113 	/*
    114 	 * BeBox memory region set
    115 	 */
    116 	{
    117 		struct btinfo_memory *meminfo;
    118 
    119 		meminfo =
    120 		    (struct btinfo_memory *)lookup_bootinfo(BTINFO_MEMORY);
    121 		if (!meminfo)
    122 			panic("not found memory information in bootinfo");
    123 		physmemr[0].start = 0;
    124 		physmemr[0].size = meminfo->memsize & ~PGOFSET;
    125 		availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
    126 		availmemr[0].size = meminfo->memsize - availmemr[0].start;
    127 	}
    128 
    129 	/*
    130 	 * Get CPU clock
    131 	 */
    132 	{
    133 		struct btinfo_clock *clockinfo;
    134 		extern u_long ticks_per_sec, ns_per_tick;
    135 
    136 		clockinfo =
    137 		    (struct btinfo_clock *)lookup_bootinfo(BTINFO_CLOCK);
    138 		if (!clockinfo)
    139 			panic("not found clock information in bootinfo");
    140 		ticks_per_sec = clockinfo->ticks_per_sec;
    141 		ns_per_tick = 1000000000 / ticks_per_sec;
    142 	}
    143 
    144 	prep_initppc(startkernel, endkernel, args,
    145 	    /* BeBox mainboard registers */
    146 	    0x7ffff000, BAT_BL_8M,		/* XXX magic number */
    147 	    0);
    148 }
    149 
    150 /*
    151  * Machine dependent startup code.
    152  */
    153 void
    154 cpu_startup(void)
    155 {
    156 
    157 	/*
    158 	 * Do common VM initialization
    159 	 */
    160 	oea_startup(NULL);
    161 
    162 	pic_init();
    163 	isa_pic = setup_i8259();
    164 	setup_bebox_intr();
    165 	primary_pic = 1;
    166 
    167 	/*
    168 	 * set up i8259 as a cascade on BeInterruptController irq 26.
    169 	 */
    170 	intr_establish(16 + 26, IST_LEVEL, IPL_HIGH, pic_handle_intr, isa_pic);
    171 
    172 	oea_install_extint(pic_ext_intr);
    173 
    174 	/*
    175 	 * Now that we have VM, malloc's are OK in bus_space.
    176 	 */
    177 	bus_space_mallocok();
    178 }
    179 
    180 /*
    181  * lookup_bootinfo:
    182  * Look up information in bootinfo of boot loader.
    183  */
    184 void *
    185 lookup_bootinfo(int type)
    186 {
    187 	struct btinfo_common *bt;
    188 	struct btinfo_common *help = (struct btinfo_common *)bootinfo;
    189 
    190 	do {
    191 		bt = help;
    192 		if (bt->type == type)
    193 			return (help);
    194 		help = (struct btinfo_common *)((char*)help + bt->next);
    195 	} while (bt->next &&
    196 	    (size_t)help < (size_t)bootinfo + sizeof (bootinfo));
    197 
    198 	return (NULL);
    199 }
    200 
    201 static void
    202 disable_device(const char *name)
    203 {
    204 	extern struct cfdata cfdata[];
    205 	int i;
    206 
    207 	for (i = 0; cfdata[i].cf_name != NULL; i++)
    208 		if (strcmp(cfdata[i].cf_name, name) == 0) {
    209 			if (cfdata[i].cf_fstate == FSTATE_NOTFOUND)
    210 				cfdata[i].cf_fstate = FSTATE_DNOTFOUND;
    211 			else if (cfdata[i].cf_fstate == FSTATE_STAR)
    212 				cfdata[i].cf_fstate = FSTATE_DSTAR;
    213 		}
    214 }
    215 
    216 /*
    217  * consinit
    218  * Initialize system console.
    219  */
    220 void
    221 consinit(void)
    222 {
    223 	struct btinfo_console *consinfo;
    224 	static int initted;
    225 
    226 	if (initted)
    227 		return;
    228 	initted = 1;
    229 
    230 	consinfo = (struct btinfo_console *)lookup_bootinfo(BTINFO_CONSOLE);
    231 	if (!consinfo)
    232 		panic("not found console information in bootinfo");
    233 
    234 	/*
    235 	 * We need to disable genfb or vga, because foo_match() return
    236 	 * the same value.
    237 	 */
    238 	if (!strcmp(consinfo->devname, "be")) {
    239 		/*
    240 		 * We use Framebuffer for initialized by BootROM of BeBox.
    241 		 * In this case, our console will be attached more late.
    242 		 */
    243 #if (NPCKBC > 0)
    244 		pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP,
    245 		    PCKBC_KBD_SLOT, 0);
    246 #endif
    247 		disable_device("vga");
    248 		return;
    249 	}
    250 
    251 	disable_device("genfb");
    252 
    253 #if (NVGA > 0)
    254 	if (!strcmp(consinfo->devname, "vga")) {
    255 		vga_cnattach(&prep_io_space_tag, &prep_mem_space_tag, -1, 1);
    256 #if (NPCKBC > 0)
    257 		pckbc_cnattach(&genppc_isa_io_space_tag, IO_KBD, KBCMDP,
    258 		    PCKBC_KBD_SLOT, 0);
    259 #endif
    260 		return;
    261 	}
    262 #endif
    263 
    264 #if (NCOM > 0)
    265 	if (!strcmp(consinfo->devname, "com")) {
    266 	   	bus_space_tag_t tag = &genppc_isa_io_space_tag;
    267 
    268 		if(comcnattach(tag, consinfo->addr, consinfo->speed,
    269 		    COM_FREQ, COM_TYPE_NORMAL,
    270 		    ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8)))
    271 			panic("can't init serial console");
    272 		return;
    273 	}
    274 #endif
    275 	panic("invalid console device %s", consinfo->devname);
    276 }
    277 
    278 /*
    279  * Halt or reboot the machine after syncing/dumping according to howto.
    280  */
    281 void
    282 cpu_reboot(int howto, char *what)
    283 {
    284 	static int syncing;
    285 	static char str[256];
    286 	char *ap = str, *ap1 = ap;
    287 
    288 	boothowto = howto;
    289 	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
    290 		syncing = 1;
    291 		vfs_shutdown();		/* sync */
    292 	}
    293 	splhigh();
    294 	if (howto & RB_HALT) {
    295 		doshutdownhooks();
    296 		pmf_system_shutdown(boothowto);
    297 		printf("halted\n\n");
    298 
    299 	}
    300 	if (!cold && (howto & RB_DUMP))
    301 		oea_dumpsys();
    302 	doshutdownhooks();
    303 	pmf_system_shutdown(boothowto);
    304 	printf("rebooting\n\n");
    305 	if (what && *what) {
    306 		if (strlen(what) > sizeof str - 5)
    307 			printf("boot string too large, ignored\n");
    308 		else {
    309 			strcpy(str, what);
    310 			ap1 = ap = str + strlen(str);
    311 			*ap++ = ' ';
    312 		}
    313 	}
    314 	*ap++ = '-';
    315 	if (howto & RB_SINGLE)
    316 		*ap++ = 's';
    317 	if (howto & RB_KDB)
    318 		*ap++ = 'd';
    319 	*ap++ = 0;
    320 	if (ap[-2] == '-')
    321 		*ap1 = 0;
    322 
    323 	/* Left and Right LED on.  Max 15 for both LED. */
    324 #define LEFT_LED(x)	(((x) & 0xf) << 4)
    325 #define RIGHT_LED(x)	(((x) & 0xf))
    326 
    327 	outb(PREP_BUS_SPACE_IO + 0x0c00, LEFT_LED(15) | RIGHT_LED(15));
    328 
    329 	while (1);
    330 }
    331