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
initppc(u_long startkernel,u_long endkernel,u_int args,void * btinfo)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
cpu_startup(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 *
lookup_bootinfo(int type)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
disable_device(const char * name)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
consinit(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
cpu_reboot(int howto,char * what)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