1 /* $NetBSD: machdep.c,v 1.36 2024/03/05 14:15:33 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 1.36 2024/03/05 14:15:33 thorpej 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
initppc(u_long startkernel,u_long endkernel,void * btinfo)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
cpu_startup(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
consinit(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
cpu_reboot(int howto,char * what)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(1); /* for proper keyboard command handling */
292 cngetc();
293 cnpollc(0);
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