1 /* $NetBSD: boot.c,v 1.21 2019/09/03 14:18:32 martin 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 <lib/libsa/stand.h>
35 #include <lib/libsa/loadfile.h>
36 #include <lib/libkern/libkern.h>
37 #include <sys/reboot.h>
38 #include <sys/boot_flag.h>
39 #include <machine/bootinfo.h>
40 #include <machine/cpu.h>
41 #include <machine/residual.h>
42 #include <powerpc/spr.h>
43 #include <powerpc/oea/spr.h>
44
45 #include "boot.h"
46 #include "sdvar.h"
47
48 char *names[] = {
49 #ifdef SCSI_SUPPORT
50 "sd(0,0,0)netbsd", "sd(0,0,0)onetbsd",
51 #endif
52 "in()",
53 };
54 #define NUMNAMES (sizeof (names) / sizeof (names[0]))
55
56 #define NAMELEN 128
57 char namebuf[NAMELEN];
58 char nametmp[NAMELEN];
59
60 char bootinfo[BOOTINFO_MAXSIZE];
61 struct btinfo_residual btinfo_residual;
62 struct btinfo_console btinfo_console;
63 struct btinfo_clock btinfo_clock;
64
65 RESIDUAL residual;
66
67 extern u_long ns_per_tick;
68 extern char bootprog_name[], bootprog_rev[];
69
70 void boot(void *, u_long);
71 static void exec_kernel(char *);
72
73 void
boot(void * resp,u_long loadaddr)74 boot(void *resp, u_long loadaddr)
75 {
76 extern char _end[], _edata[];
77 int n = 0;
78 int addr, speed;
79 unsigned int cpuvers;
80 char *name, *cnname, *p;
81
82 /* Clear all of BSS */
83 memset(_edata, 0, _end - _edata);
84
85 /*
86 * console init
87 */
88 cnname = cninit(&addr, &speed);
89 #ifdef VGA_RESET
90 vga_reset((u_char *)0xc0000000);
91 #endif
92
93 /* make bootinfo */
94 /*
95 * residual data
96 */
97 btinfo_residual.common.next = sizeof(btinfo_residual);
98 btinfo_residual.common.type = BTINFO_RESIDUAL;
99 if (resp) {
100 memcpy(&residual, resp, sizeof(residual));
101 btinfo_residual.addr = (void *)&residual;
102 } else {
103 printf("Warning: no residual data.\n");
104 btinfo_residual.addr = 0;
105 }
106
107 /*
108 * console
109 */
110 btinfo_console.common.next = sizeof(btinfo_console);
111 btinfo_console.common.type = BTINFO_CONSOLE;
112 strcpy(btinfo_console.devname, cnname);
113 btinfo_console.addr = addr;
114 btinfo_console.speed = speed;
115
116 /*
117 * clock
118 */
119 __asm volatile ("mfpvr %0" : "=r"(cpuvers));
120 cpuvers >>= 16;
121 btinfo_clock.common.next = 0;
122 btinfo_clock.common.type = BTINFO_CLOCK;
123 if (cpuvers == MPC601) {
124 btinfo_clock.ticks_per_sec = 1000000000;
125 } else {
126 btinfo_clock.ticks_per_sec = resp ?
127 residual.VitalProductData.ProcessorBusHz/4 : TICKS_PER_SEC;
128 }
129 ns_per_tick = 1000000000 / btinfo_clock.ticks_per_sec;
130
131 p = bootinfo;
132 memcpy(p, (void *)&btinfo_residual, sizeof(btinfo_residual));
133 p += sizeof(btinfo_residual);
134 memcpy(p, (void *)&btinfo_console, sizeof(btinfo_console));
135 p += sizeof(btinfo_console);
136 memcpy(p, (void *)&btinfo_clock, sizeof(btinfo_clock));
137
138 /*
139 * load kernel if attached
140 */
141 init_in(loadaddr);
142
143 printf("\n");
144 printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev);
145 printf("\n");
146
147 #ifdef SCSI_SUPPORT
148 /*
149 * Initialize siop@pci0 dev 16 func 0
150 */
151 siop_init(0, 16, 0);
152 #endif
153
154 for (;;) {
155 name = names[n++];
156 if (n >= NUMNAMES)
157 n = 0;
158
159 exec_kernel(name);
160 }
161 }
162
163 /*
164 * Exec kernel
165 */
166 static void
exec_kernel(char * name)167 exec_kernel(char *name)
168 {
169 int howto = 0;
170 char c, *ptr;
171 u_long marks[MARK_MAX];
172 #ifdef DBMONITOR
173 int go_monitor;
174 extern int db_monitor(void);
175
176 ret:
177 #endif /* DBMONITOR */
178 printf("\nBoot: ");
179 memset(namebuf, 0, sizeof (namebuf));
180 if (tgets(namebuf) == -1)
181 printf("\n");
182
183 ptr = namebuf;
184 #ifdef DBMONITOR
185 go_monitor = 0;
186 if (*ptr == '!') {
187 if (*(++ptr) == NULL) {
188 db_monitor();
189 printf("\n");
190 goto ret;
191 } else {
192 go_monitor++;
193 }
194 }
195 #endif /* DBMONITOR */
196 while ((c = *ptr)) {
197 while (c == ' ')
198 c = *++ptr;
199 if (!c)
200 goto next;
201 if (c == '-') {
202 while ((c = *++ptr) && c != ' ')
203 BOOT_FLAG(c, howto);
204 } else {
205 name = ptr;
206 while ((c = *++ptr) && c != ' ');
207 if (c)
208 *ptr++ = 0;
209 }
210 }
211
212 next:
213 printf("Loading %s", name);
214 if (howto)
215 printf(" (howto 0x%x)", howto);
216 printf("\n");
217
218 marks[MARK_START] = 0;
219 if (loadfile(name, marks, LOAD_ALL) == 0) {
220 #ifdef DBMONITOR
221 if (go_monitor) {
222 db_monitor();
223 printf("\n");
224 }
225 #endif /* DBMONITOR */
226
227 printf("start=0x%lx\n\n", marks[MARK_ENTRY]);
228 delay(1000);
229 __syncicache((void *)marks[MARK_ENTRY],
230 (u_int)marks[MARK_SYM] - (u_int)marks[MARK_ENTRY]);
231
232 run((void *)marks[MARK_SYM],
233 (void *)marks[MARK_END],
234 (void *)howto,
235 (void *)bootinfo,
236 (void *)marks[MARK_ENTRY]);
237 }
238 }
239
240 void
_rtt(void)241 _rtt(void)
242 {
243
244 /* XXXX */
245 __unreachable();
246 }
247