Home | History | Annotate | Line # | Download | only in mvmeppc 
      1 /*	$NetBSD: machdep.c,v 1.37 2025/12/20 10:51:04 skrll 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 1.37 2025/12/20 10:51:04 skrll Exp $");
     36 
     37 #include "opt_compat_netbsd.h"
     38 #include "opt_mvmeconf.h"
     39 #include "opt_ddb.h"
     40 
     41 #include <sys/param.h>
     42 #include <sys/buf.h>
     43 #include <sys/bus.h>
     44 #include <sys/conf.h>
     45 #include <sys/device.h>
     46 #include <sys/exec.h>
     47 #include <sys/extent.h>
     48 #include <sys/intr.h>
     49 #include <sys/kernel.h>
     50 #include <sys/mbuf.h>
     51 #include <sys/mount.h>
     52 #include <sys/msgbuf.h>
     53 #include <sys/proc.h>
     54 #include <sys/reboot.h>
     55 #include <sys/syscallargs.h>
     56 #include <sys/syslog.h>
     57 #include <sys/systm.h>
     58 #include <sys/sysctl.h>
     59 
     60 #include <machine/autoconf.h>
     61 #include <machine/bootinfo.h>
     62 #include <machine/platform.h>
     63 #include <machine/powerpc.h>
     64 
     65 #include <powerpc/pmap.h>
     66 #include <powerpc/trap.h>
     67 
     68 #include <powerpc/oea/bat.h>
     69 
     70 #include <dev/cons.h>
     71 
     72 #if 0
     73 #include "vga.h"
     74 #if (NVGA > 0)
     75 #include <dev/ic/mc6845reg.h>
     76 #include <dev/ic/pcdisplayvar.h>
     77 #include <dev/ic/vgareg.h>
     78 #include <dev/ic/vgavar.h>
     79 #endif
     80 
     81 #include "pckbc.h"
     82 #if (NPCKBC > 0)
     83 #include <dev/isa/isareg.h>
     84 #include <dev/ic/i8042reg.h>
     85 #include <dev/ic/pckbcvar.h>
     86 #endif
     87 #endif
     88 
     89 #include "com.h"
     90 #if (NCOM > 0)
     91 #include <sys/termios.h>
     92 #include <dev/ic/comreg.h>
     93 #include <dev/ic/comvar.h>
     94 #endif
     95 
     96 void initppc(u_long, u_long, void *);
     97 
     98 /*
     99  * Global variables used here and there
    100  */
    101 struct mvmeppc_bootinfo bootinfo;
    102 vaddr_t prep_intr_reg;	/* PReP-compatible  interrupt vector register */
    103 uint32_t prep_intr_reg_off = INTR_VECTOR_REG;
    104 struct mem_region physmemr[2], availmemr[2];
    105 paddr_t avail_end;			/* XXX temporary */
    106 struct pic_ops *isa_pic;
    107 
    108 void
    109 initppc(u_long startkernel, u_long endkernel, void *btinfo)
    110 {
    111 	/*
    112 	 * Copy bootinfo.
    113 	 */
    114 	memcpy(&bootinfo, btinfo, sizeof(bootinfo));
    115 
    116 	/*
    117 	 * Figure out the board family/type.
    118 	 */
    119 	ident_platform();
    120 
    121 	if (platform == NULL) {
    122 		extern void _mvmeppc_unsup_board(const char *, const char *);
    123 		char msg[80];
    124 
    125 		snprintf(msg, sizeof(msg), "Unsupported model: MVME%04x",
    126 		    bootinfo.bi_modelnumber);
    127 		_mvmeppc_unsup_board(msg, &msg[strlen(msg)]);
    128 		/* NOTREACHED */
    129 	}
    130 
    131 	/*
    132 	 * Set memory region
    133 	 */
    134 	physmemr[0].start = 0;
    135 	physmemr[0].size = bootinfo.bi_memsize & ~PGOFSET;
    136 	availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET;
    137 	availmemr[0].size = bootinfo.bi_memsize - availmemr[0].start;
    138 	avail_end = physmemr[0].start + physmemr[0].size;    /* XXX temporary */
    139 
    140 	/*
    141 	 * Set CPU clock
    142 	 */
    143 	{
    144 		extern u_long ticks_per_sec, ns_per_tick;
    145 
    146 		ticks_per_sec = bootinfo.bi_clocktps;
    147 		ns_per_tick = 1000000000 / ticks_per_sec;
    148 	}
    149 
    150 	prep_initppc(startkernel, endkernel, boothowto, 0);
    151 
    152 	(*platform->pic_setup)();
    153 }
    154 
    155 /*
    156  * Machine dependent startup code.
    157  */
    158 void
    159 cpu_startup(void)
    160 {
    161 	char modelbuf[256];
    162 
    163 	/*
    164 	 * Mapping PReP-compatible interrupt vector register.
    165 	 */
    166 	prep_intr_reg = (vaddr_t) mapiodev(MVMEPPC_INTR_REG, PAGE_SIZE, false);
    167 	if (!prep_intr_reg)
    168 		panic("startup: no room for interrupt register");
    169 
    170 	snprintf(modelbuf, sizeof(modelbuf),
    171 	    "%s\nCore Speed: %dMHz, Bus Speed: %dMHz\n",
    172 	    platform->model,
    173 	    bootinfo.bi_mpuspeed/1000000,
    174 	    bootinfo.bi_busspeed/1000000);
    175 	oea_startup(modelbuf);
    176 
    177 	/*
    178 	 * Now allow hardware interrupts.
    179 	 */
    180 	{
    181 		int msr;
    182 
    183 		splraise(-1);
    184 		__asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0"
    185 			      : "=r"(msr) : "K"(PSL_EE));
    186 	}
    187 
    188 	bus_space_mallocok();
    189 }
    190 
    191 /*
    192  * consinit
    193  * Initialize system console.
    194  */
    195 void
    196 consinit(void)
    197 {
    198 	static int initted = 0;
    199 
    200 	if (initted)
    201 		return;
    202 	initted = 1;
    203 
    204 #if 0
    205 
    206 #if (NPFB > 0)
    207 	if (!strcmp(consinfo->devname, "fb")) {
    208 		pfb_cnattach(consinfo->addr);
    209 #if (NPCKBC > 0)
    210 		pckbc_cnattach(&mvmeppc_isa_io_space_tag, IO_KBD, KBCMDP,
    211 		    PCKBC_KBD_SLOT, 0);
    212 #endif
    213 		return;
    214 	}
    215 #endif
    216 
    217 #if (NVGA > 0) || (NGTEN > 0)
    218 	if (!strcmp(consinfo->devname, "vga")) {
    219 #if (NGTEN > 0)
    220 		if (!gten_cnattach(&mvmeppc_mem_space_tag))
    221 			goto dokbd;
    222 #endif
    223 #if (NVGA > 0)
    224 		if (!vga_cnattach(&mvmeppc_io_space_tag, &mvmeppc_mem_space_tag,
    225 				-1, 1))
    226 			goto dokbd;
    227 #endif
    228 dokbd:
    229 #if (NPCKBC > 0)
    230 		pckbc_cnattach(&mvmeppc_isa_io_space_tag, IO_KBD, KBCMDP,
    231 		    PCKBC_KBD_SLOT, 0);
    232 #endif
    233 		return;
    234 	}
    235 #endif /* PC | VGA */
    236 
    237 #endif
    238 
    239 #if (NCOM > 0)
    240 	if (!strcmp(bootinfo.bi_consoledev, "PC16550")) {
    241 		bus_space_tag_t tag = &genppc_isa_io_space_tag;
    242 		static const bus_addr_t caddr[2] = {0x3f8, 0x2f8};
    243 		int rv;
    244 		rv = comcnattach(tag, caddr[bootinfo.bi_consolechan],
    245 		    bootinfo.bi_consolespeed, COM_FREQ, COM_TYPE_NORMAL,
    246 		    bootinfo.bi_consolecflag);
    247 		if (rv)
    248 			panic("can't init serial console");
    249 
    250 		return;
    251 	}
    252 #endif
    253 	panic("invalid console device %s", bootinfo.bi_consoledev);
    254 }
    255 
    256 /*
    257  * Halt or reboot the machine after syncing/dumping according to howto.
    258  */
    259 void
    260 cpu_reboot(int howto, char *what)
    261 {
    262 	static int syncing;
    263 
    264 	if (cold) {
    265 		howto |= RB_HALT;
    266 		goto halt_sys;
    267 	}
    268 
    269 	boothowto = howto;
    270 	if ((howto & RB_NOSYNC) == 0 && syncing == 0) {
    271 		syncing = 1;
    272 		vfs_shutdown();		/* sync */
    273 	}
    274 
    275 	/* Disable intr */
    276 	splhigh();
    277 
    278 	/* Do dump if requested */
    279 	if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
    280 		oea_dumpsys();
    281 
    282 halt_sys:
    283 	doshutdownhooks();
    284 
    285 	pmf_system_shutdown(boothowto);
    286 
    287 	if (howto & RB_HALT) {
    288                 printf("\n");
    289                 printf("The operating system has halted.\n");
    290                 printf("Please press any key to reboot.\n\n");
    291                 cnpollc(true);	/* for proper keyboard command handling */
    292                 cngetc();
    293                 cnpollc(false);
    294 	}
    295 
    296 	printf("rebooting...\n\n");
    297 
    298 	(*platform->reset)();
    299 
    300 	printf("Oops! Board reset failed!\n");
    301 
    302 	for (;;)
    303 		continue;
    304 	/* NOTREACHED */
    305 }
    306