Commit | Line | Data |
---|---|---|
8ae0e4b4 | 1 | /* |
0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
8ae0e4b4 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
4 | * specifies the terms and conditions for redistribution. | |
5 | * | |
97b95718 | 6 | * @(#)boot.c 7.4 (Berkeley) %G% |
8ae0e4b4 | 7 | */ |
b7e60356 | 8 | |
1cf5763d MK |
9 | #include "param.h" |
10 | #include "inode.h" | |
11 | #include "fs.h" | |
12 | #include "vm.h" | |
b7e60356 BJ |
13 | #include <a.out.h> |
14 | #include "saio.h" | |
1cf5763d | 15 | #include "reboot.h" |
b7e60356 | 16 | |
8da76047 BJ |
17 | /* |
18 | * Boot program... arguments passed in r10 and r11 determine | |
19 | * whether boot stops to ask for system name and which device | |
20 | * boot comes from. | |
21 | */ | |
22 | ||
80c81fbf | 23 | #define UNIX "/vmunix" |
018dc60b | 24 | char line[100]; |
b7e60356 | 25 | |
a889f9b7 | 26 | int retry = 0; |
80c81fbf | 27 | extern unsigned opendev; |
a889f9b7 | 28 | |
b7e60356 BJ |
29 | main() |
30 | { | |
24a62d66 | 31 | register unsigned howto, devtype; /* howto=r11, devtype=r10 */ |
80c81fbf | 32 | int io, type; |
b7e60356 | 33 | |
610c6f01 BJ |
34 | #ifdef lint |
35 | howto = 0; devtype = 0; | |
36 | #endif | |
018dc60b | 37 | printf("\nBoot\n"); |
0bd37f37 | 38 | #ifdef JUSTASK |
aaa709c3 | 39 | howto = RB_ASKNAME|RB_SINGLE; |
0bd37f37 | 40 | #else |
24a62d66 | 41 | if ((howto & RB_ASKNAME) == 0) { |
80c81fbf MK |
42 | type = (devtype >> B_TYPESHIFT) & B_TYPEMASK; |
43 | if ((unsigned)type < ndevs && devsw[type].dv_name[0]) | |
44 | strcpy(line, UNIX); | |
45 | else | |
1cf5763d | 46 | howto |= RB_SINGLE|RB_ASKNAME; |
8da76047 | 47 | } |
0bd37f37 | 48 | #endif |
8da76047 BJ |
49 | for (;;) { |
50 | if (howto & RB_ASKNAME) { | |
51 | printf(": "); | |
52 | gets(line); | |
80c81fbf MK |
53 | if (line[0] == 0) { |
54 | strcpy(line, UNIX); | |
55 | printf(": %s\n", line); | |
56 | } | |
8da76047 BJ |
57 | } else |
58 | printf(": %s\n", line); | |
59 | io = open(line, 0); | |
e559a17c | 60 | if (io >= 0) { |
1c915156 | 61 | loadpcs(); |
80c81fbf | 62 | copyunix(howto, opendev, io); |
f834e141 | 63 | close(io); |
1cf5763d | 64 | howto |= RB_SINGLE|RB_ASKNAME; |
e559a17c | 65 | } |
8da76047 | 66 | if (++retry > 2) |
1cf5763d | 67 | howto |= RB_SINGLE|RB_ASKNAME; |
8da76047 | 68 | } |
b7e60356 BJ |
69 | } |
70 | ||
a889f9b7 | 71 | /*ARGSUSED*/ |
97b95718 MK |
72 | copyunix(howto, devtype, aio) |
73 | register howto, devtype; /* howto=r11, devtype=r10 */ | |
74 | int aio; | |
b7e60356 | 75 | { |
97b95718 | 76 | register int esym; /* must be r9 */ |
b7e60356 | 77 | struct exec x; |
97b95718 | 78 | register int io = aio, i; |
b7e60356 BJ |
79 | char *addr; |
80 | ||
81 | i = read(io, (char *)&x, sizeof x); | |
06254255 | 82 | if (i != sizeof x || |
1cf5763d MK |
83 | (x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410)) { |
84 | printf("Bad format\n"); | |
85 | return; | |
86 | } | |
b7e60356 | 87 | printf("%d", x.a_text); |
b5d17f4d | 88 | if (x.a_magic == 0413 && lseek(io, 0x400, 0) == -1) |
06254255 | 89 | goto shread; |
b7e60356 BJ |
90 | if (read(io, (char *)0, x.a_text) != x.a_text) |
91 | goto shread; | |
92 | addr = (char *)x.a_text; | |
06254255 KM |
93 | if (x.a_magic == 0413 || x.a_magic == 0410) |
94 | while ((int)addr & CLOFSET) | |
95 | *addr++ = 0; | |
b7e60356 BJ |
96 | printf("+%d", x.a_data); |
97 | if (read(io, addr, x.a_data) != x.a_data) | |
98 | goto shread; | |
99 | addr += x.a_data; | |
100 | printf("+%d", x.a_bss); | |
b7e60356 BJ |
101 | for (i = 0; i < x.a_bss; i++) |
102 | *addr++ = 0; | |
1cf5763d MK |
103 | if (howto & RB_KDB && x.a_syms) { |
104 | *(int *)addr = x.a_syms; /* symbol table size */ | |
105 | addr += sizeof (int); | |
106 | printf("[+%d", x.a_syms); | |
107 | if (read(io, addr, x.a_syms) != x.a_syms) | |
108 | goto shread; | |
109 | addr += x.a_syms; | |
110 | if (read(io, addr, sizeof (int)) != sizeof (int)) | |
111 | goto shread; | |
112 | i = *(int *)addr - sizeof (int); /* string table size */ | |
113 | addr += sizeof (int); | |
114 | printf("+%d]", i); | |
115 | if (read(io, addr, i) != i) | |
116 | goto shread; | |
117 | addr += i; | |
118 | esym = roundup((int)addr, sizeof (int)); | |
119 | x.a_bss = 0; | |
120 | } else | |
121 | howto &= ~RB_KDB; | |
122 | for (i = 0; i < 128*512; i++) /* slop */ | |
123 | *addr++ = 0; | |
b7e60356 BJ |
124 | x.a_entry &= 0x7fffffff; |
125 | printf(" start 0x%x\n", x.a_entry); | |
126 | (*((int (*)()) x.a_entry))(); | |
f834e141 | 127 | return; |
b7e60356 | 128 | shread: |
1cf5763d MK |
129 | printf("Short read\n"); |
130 | return; | |
b7e60356 | 131 | } |
e559a17c TF |
132 | |
133 | /* 750 Patchable Control Store magic */ | |
134 | ||
135 | #include "../vax/mtpr.h" | |
136 | #include "../vax/cpu.h" | |
137 | #define PCS_BITCNT 0x2000 /* number of patchbits */ | |
138 | #define PCS_MICRONUM 0x400 /* number of ucode locs */ | |
139 | #define PCS_PATCHADDR 0xf00000 /* start addr of patchbits */ | |
140 | #define PCS_PCSADDR (PCS_PATCHADDR+0x8000) /* start addr of pcs */ | |
141 | #define PCS_PATCHBIT (PCS_PATCHADDR+0xc000) /* patchbits enable reg */ | |
142 | #define PCS_ENABLE 0xfff00000 /* enable bits for pcs */ | |
143 | ||
144 | loadpcs() | |
145 | { | |
146 | register int *ip; /* known to be r11 below */ | |
147 | register int i; /* known to be r10 below */ | |
148 | register int *jp; /* known to be r9 below */ | |
149 | register int j; | |
1c915156 | 150 | static int pcsdone = 0; |
e559a17c TF |
151 | union cpusid sid; |
152 | char pcs[100]; | |
5af1bd7a JB |
153 | char *closeparen; |
154 | char *index(); | |
e559a17c TF |
155 | |
156 | sid.cpusid = mfpr(SID); | |
1c915156 | 157 | if (sid.cpuany.cp_type!=VAX_750 || sid.cpu750.cp_urev<95 || pcsdone) |
e559a17c TF |
158 | return; |
159 | printf("Updating 11/750 microcode: "); | |
5af1bd7a JB |
160 | strncpy(pcs, line, 99); |
161 | pcs[99] = 0; | |
162 | closeparen = index(pcs, ')'); | |
163 | if (closeparen) | |
164 | *(++closeparen) = 0; | |
165 | else | |
166 | return; | |
e559a17c TF |
167 | strcat(pcs, "pcs750.bin"); |
168 | i = open(pcs, 0); | |
169 | if (i < 0) | |
170 | return; | |
171 | /* | |
172 | * We ask for more than we need to be sure we get only what we expect. | |
173 | * After read: | |
174 | * locs 0 - 1023 packed patchbits | |
175 | * 1024 - 11264 packed microcode | |
176 | */ | |
177 | if (read(i, (char *)0, 23*512) != 22*512) { | |
178 | printf("Error reading %s\n", pcs); | |
179 | close(i); | |
180 | return; | |
181 | } | |
182 | close(i); | |
183 | ||
184 | /* | |
185 | * Enable patchbit loading and load the bits one at a time. | |
186 | */ | |
187 | *((int *)PCS_PATCHBIT) = 1; | |
188 | ip = (int *)PCS_PATCHADDR; | |
189 | jp = (int *)0; | |
190 | for (i=0; i < PCS_BITCNT; i++) { | |
191 | asm(" extzv r10,$1,(r9),(r11)+"); | |
192 | } | |
193 | *((int *)PCS_PATCHBIT) = 0; | |
194 | ||
195 | /* | |
196 | * Load PCS microcode 20 bits at a time. | |
197 | */ | |
198 | ip = (int *)PCS_PCSADDR; | |
199 | jp = (int *)1024; | |
200 | for (i=j=0; j < PCS_MICRONUM * 4; i+=20, j++) { | |
201 | asm(" extzv r10,$20,(r9),(r11)+"); | |
202 | } | |
203 | ||
204 | /* | |
205 | * Enable PCS. | |
206 | */ | |
207 | i = *jp; /* get 1st 20 bits of microcode again */ | |
208 | i &= 0xfffff; | |
209 | i |= PCS_ENABLE; /* reload these bits with PCS enable set */ | |
210 | *((int *)PCS_PCSADDR) = i; | |
211 | ||
212 | sid.cpusid = mfpr(SID); | |
213 | printf("new rev level=%d\n", sid.cpu750.cp_urev); | |
1c915156 | 214 | pcsdone = 1; |
e559a17c | 215 | } |