diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/cris/arch-v10/boot/tools |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/cris/arch-v10/boot/tools')
-rw-r--r-- | arch/cris/arch-v10/boot/tools/build.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/arch/cris/arch-v10/boot/tools/build.c b/arch/cris/arch-v10/boot/tools/build.c new file mode 100644 index 000000000000..2f9bbb26d603 --- /dev/null +++ b/arch/cris/arch-v10/boot/tools/build.c | |||
@@ -0,0 +1,288 @@ | |||
1 | /* | ||
2 | * linux/tools/build.c | ||
3 | * | ||
4 | * Copyright (C) 1991, 1992 Linus Torvalds | ||
5 | */ | ||
6 | |||
7 | /* | ||
8 | * This file builds a disk-image from three different files: | ||
9 | * | ||
10 | * - bootsect: exactly 512 bytes of 8086 machine code, loads the rest | ||
11 | * - setup: 8086 machine code, sets up system parm | ||
12 | * - system: 80386 code for actual system | ||
13 | * | ||
14 | * It does some checking that all files are of the correct type, and | ||
15 | * just writes the result to stdout, removing headers and padding to | ||
16 | * the right amount. It also writes some system data to stderr. | ||
17 | */ | ||
18 | |||
19 | /* | ||
20 | * Changes by tytso to allow root device specification | ||
21 | * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996 | ||
22 | * Cross compiling fixes by Gertjan van Wingerde, July 1996 | ||
23 | */ | ||
24 | |||
25 | #include <stdio.h> /* fprintf */ | ||
26 | #include <string.h> | ||
27 | #include <stdlib.h> /* contains exit */ | ||
28 | #include <sys/types.h> /* unistd.h needs this */ | ||
29 | #include <sys/stat.h> | ||
30 | #include <sys/sysmacros.h> | ||
31 | #include <unistd.h> /* contains read/write */ | ||
32 | #include <fcntl.h> | ||
33 | #include <linux/a.out.h> | ||
34 | #include <errno.h> | ||
35 | |||
36 | #define MINIX_HEADER 32 | ||
37 | |||
38 | #define N_MAGIC_OFFSET 1024 | ||
39 | #ifndef __BFD__ | ||
40 | static int GCC_HEADER = sizeof(struct exec); | ||
41 | #endif | ||
42 | |||
43 | #ifdef __BIG_KERNEL__ | ||
44 | #define SYS_SIZE 0xffff | ||
45 | #else | ||
46 | #define SYS_SIZE DEF_SYSSIZE | ||
47 | #endif | ||
48 | |||
49 | #define DEFAULT_MAJOR_ROOT 0 | ||
50 | #define DEFAULT_MINOR_ROOT 0 | ||
51 | |||
52 | /* max nr of sectors of setup: don't change unless you also change | ||
53 | * bootsect etc */ | ||
54 | #define SETUP_SECTS 4 | ||
55 | |||
56 | #define STRINGIFY(x) #x | ||
57 | |||
58 | typedef union { | ||
59 | int i; | ||
60 | long l; | ||
61 | short s[2]; | ||
62 | char b[4]; | ||
63 | } conv; | ||
64 | |||
65 | long intel_long(long l) | ||
66 | { | ||
67 | conv t; | ||
68 | |||
69 | t.b[0] = l & 0xff; l >>= 8; | ||
70 | t.b[1] = l & 0xff; l >>= 8; | ||
71 | t.b[2] = l & 0xff; l >>= 8; | ||
72 | t.b[3] = l & 0xff; l >>= 8; | ||
73 | return t.l; | ||
74 | } | ||
75 | |||
76 | int intel_int(int i) | ||
77 | { | ||
78 | conv t; | ||
79 | |||
80 | t.b[0] = i & 0xff; i >>= 8; | ||
81 | t.b[1] = i & 0xff; i >>= 8; | ||
82 | t.b[2] = i & 0xff; i >>= 8; | ||
83 | t.b[3] = i & 0xff; i >>= 8; | ||
84 | return t.i; | ||
85 | } | ||
86 | |||
87 | short intel_short(short l) | ||
88 | { | ||
89 | conv t; | ||
90 | |||
91 | t.b[0] = l & 0xff; l >>= 8; | ||
92 | t.b[1] = l & 0xff; l >>= 8; | ||
93 | return t.s[0]; | ||
94 | } | ||
95 | |||
96 | void die(const char * str) | ||
97 | { | ||
98 | fprintf(stderr,"%s\n",str); | ||
99 | exit(1); | ||
100 | } | ||
101 | |||
102 | void usage(void) | ||
103 | { | ||
104 | die("Usage: build bootsect setup system [rootdev] [> image]"); | ||
105 | } | ||
106 | |||
107 | int main(int argc, char ** argv) | ||
108 | { | ||
109 | int i,c,id,sz,tmp_int; | ||
110 | unsigned long sys_size, tmp_long; | ||
111 | char buf[1024]; | ||
112 | #ifndef __BFD__ | ||
113 | struct exec *ex = (struct exec *)buf; | ||
114 | #endif | ||
115 | char major_root, minor_root; | ||
116 | struct stat sb; | ||
117 | unsigned char setup_sectors; | ||
118 | |||
119 | if ((argc < 4) || (argc > 5)) | ||
120 | usage(); | ||
121 | if (argc > 4) { | ||
122 | if (!strcmp(argv[4], "CURRENT")) { | ||
123 | if (stat("/", &sb)) { | ||
124 | perror("/"); | ||
125 | die("Couldn't stat /"); | ||
126 | } | ||
127 | major_root = major(sb.st_dev); | ||
128 | minor_root = minor(sb.st_dev); | ||
129 | } else if (strcmp(argv[4], "FLOPPY")) { | ||
130 | if (stat(argv[4], &sb)) { | ||
131 | perror(argv[4]); | ||
132 | die("Couldn't stat root device."); | ||
133 | } | ||
134 | major_root = major(sb.st_rdev); | ||
135 | minor_root = minor(sb.st_rdev); | ||
136 | } else { | ||
137 | major_root = 0; | ||
138 | minor_root = 0; | ||
139 | } | ||
140 | } else { | ||
141 | major_root = DEFAULT_MAJOR_ROOT; | ||
142 | minor_root = DEFAULT_MINOR_ROOT; | ||
143 | } | ||
144 | fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root); | ||
145 | for (i=0;i<sizeof buf; i++) buf[i]=0; | ||
146 | if ((id=open(argv[1],O_RDONLY,0))<0) | ||
147 | die("Unable to open 'boot'"); | ||
148 | if (read(id,buf,MINIX_HEADER) != MINIX_HEADER) | ||
149 | die("Unable to read header of 'boot'"); | ||
150 | if (((long *) buf)[0]!=intel_long(0x04100301)) | ||
151 | die("Non-Minix header of 'boot'"); | ||
152 | if (((long *) buf)[1]!=intel_long(MINIX_HEADER)) | ||
153 | die("Non-Minix header of 'boot'"); | ||
154 | if (((long *) buf)[3] != 0) | ||
155 | die("Illegal data segment in 'boot'"); | ||
156 | if (((long *) buf)[4] != 0) | ||
157 | die("Illegal bss in 'boot'"); | ||
158 | if (((long *) buf)[5] != 0) | ||
159 | die("Non-Minix header of 'boot'"); | ||
160 | if (((long *) buf)[7] != 0) | ||
161 | die("Illegal symbol table in 'boot'"); | ||
162 | i=read(id,buf,sizeof buf); | ||
163 | fprintf(stderr,"Boot sector %d bytes.\n",i); | ||
164 | if (i != 512) | ||
165 | die("Boot block must be exactly 512 bytes"); | ||
166 | if ((*(unsigned short *)(buf+510)) != (unsigned short)intel_short(0xAA55)) | ||
167 | die("Boot block hasn't got boot flag (0xAA55)"); | ||
168 | buf[508] = (char) minor_root; | ||
169 | buf[509] = (char) major_root; | ||
170 | i=write(1,buf,512); | ||
171 | if (i!=512) | ||
172 | die("Write call failed"); | ||
173 | close (id); | ||
174 | |||
175 | if ((id=open(argv[2],O_RDONLY,0))<0) | ||
176 | die("Unable to open 'setup'"); | ||
177 | if (read(id,buf,MINIX_HEADER) != MINIX_HEADER) | ||
178 | die("Unable to read header of 'setup'"); | ||
179 | if (((long *) buf)[0]!=intel_long(0x04100301)) | ||
180 | die("Non-Minix header of 'setup'"); | ||
181 | if (((long *) buf)[1]!=intel_long(MINIX_HEADER)) | ||
182 | die("Non-Minix header of 'setup'"); | ||
183 | if (((long *) buf)[3] != 0) | ||
184 | die("Illegal data segment in 'setup'"); | ||
185 | if (((long *) buf)[4] != 0) | ||
186 | die("Illegal bss in 'setup'"); | ||
187 | if (((long *) buf)[5] != 0) | ||
188 | die("Non-Minix header of 'setup'"); | ||
189 | if (((long *) buf)[7] != 0) | ||
190 | die("Illegal symbol table in 'setup'"); | ||
191 | for (i=0 ; (c=read(id,buf,sizeof buf))>0 ; i+=c ) | ||
192 | #ifdef __BIG_KERNEL__ | ||
193 | { | ||
194 | if (!i) { | ||
195 | /* Working with memcpy because of alignment constraints | ||
196 | on Sparc - Gertjan */ | ||
197 | memcpy(&tmp_long, &buf[2], sizeof(long)); | ||
198 | if (tmp_long != intel_long(0x53726448) ) | ||
199 | die("Wrong magic in loader header of 'setup'"); | ||
200 | memcpy(&tmp_int, &buf[6], sizeof(int)); | ||
201 | if (tmp_int < intel_int(0x200)) | ||
202 | die("Wrong version of loader header of 'setup'"); | ||
203 | buf[0x11] = 1; /* LOADED_HIGH */ | ||
204 | tmp_long = intel_long(0x100000); | ||
205 | memcpy(&buf[0x14], &tmp_long, sizeof(long)); /* code32_start */ | ||
206 | } | ||
207 | #endif | ||
208 | if (write(1,buf,c)!=c) | ||
209 | die("Write call failed"); | ||
210 | #ifdef __BIG_KERNEL__ | ||
211 | } | ||
212 | #endif | ||
213 | if (c != 0) | ||
214 | die("read-error on 'setup'"); | ||
215 | close (id); | ||
216 | setup_sectors = (unsigned char)((i + 511) / 512); | ||
217 | /* for compatibility with LILO */ | ||
218 | if (setup_sectors < SETUP_SECTS) | ||
219 | setup_sectors = SETUP_SECTS; | ||
220 | fprintf(stderr,"Setup is %d bytes.\n",i); | ||
221 | for (c=0 ; c<sizeof(buf) ; c++) | ||
222 | buf[c] = '\0'; | ||
223 | while (i < setup_sectors * 512) { | ||
224 | c = setup_sectors * 512 - i; | ||
225 | if (c > sizeof(buf)) | ||
226 | c = sizeof(buf); | ||
227 | if (write(1,buf,c) != c) | ||
228 | die("Write call failed"); | ||
229 | i += c; | ||
230 | } | ||
231 | |||
232 | if ((id=open(argv[3],O_RDONLY,0))<0) | ||
233 | die("Unable to open 'system'"); | ||
234 | #ifndef __BFD__ | ||
235 | if (read(id,buf,GCC_HEADER) != GCC_HEADER) | ||
236 | die("Unable to read header of 'system'"); | ||
237 | if (N_MAGIC(*ex) == ZMAGIC) { | ||
238 | GCC_HEADER = N_MAGIC_OFFSET; | ||
239 | lseek(id, GCC_HEADER, SEEK_SET); | ||
240 | } else if (N_MAGIC(*ex) != QMAGIC) | ||
241 | die("Non-GCC header of 'system'"); | ||
242 | fprintf(stderr,"System is %d kB (%d kB code, %d kB data and %d kB bss)\n", | ||
243 | (ex->a_text+ex->a_data+ex->a_bss)/1024, | ||
244 | ex->a_text /1024, | ||
245 | ex->a_data /1024, | ||
246 | ex->a_bss /1024); | ||
247 | sz = N_SYMOFF(*ex) - GCC_HEADER + 4; | ||
248 | #else | ||
249 | if (fstat (id, &sb)) { | ||
250 | perror ("fstat"); | ||
251 | die ("Unable to stat 'system'"); | ||
252 | } | ||
253 | sz = sb.st_size; | ||
254 | fprintf (stderr, "System is %d kB\n", sz/1024); | ||
255 | #endif | ||
256 | sys_size = (sz + 15) / 16; | ||
257 | if (sys_size > SYS_SIZE) | ||
258 | die("System is too big"); | ||
259 | while (sz > 0) { | ||
260 | int l, n; | ||
261 | |||
262 | l = sz; | ||
263 | if (l > sizeof(buf)) | ||
264 | l = sizeof(buf); | ||
265 | if ((n=read(id, buf, l)) != l) { | ||
266 | if (n == -1) | ||
267 | perror(argv[1]); | ||
268 | else | ||
269 | fprintf(stderr, "Unexpected EOF\n"); | ||
270 | die("Can't read 'system'"); | ||
271 | } | ||
272 | if (write(1, buf, l) != l) | ||
273 | die("Write failed"); | ||
274 | sz -= l; | ||
275 | } | ||
276 | close(id); | ||
277 | if (lseek(1, 497, 0) == 497) { | ||
278 | if (write(1, &setup_sectors, 1) != 1) | ||
279 | die("Write of setup sectors failed"); | ||
280 | } | ||
281 | if (lseek(1,500,0) == 500) { | ||
282 | buf[0] = (sys_size & 0xff); | ||
283 | buf[1] = ((sys_size >> 8) & 0xff); | ||
284 | if (write(1, buf, 2) != 2) | ||
285 | die("Write failed"); | ||
286 | } | ||
287 | return(0); | ||
288 | } | ||