rev |
line source |
pascal@19515
|
1 // This file is distributed under GPL
|
pascal@19515
|
2 //
|
pascal@19515
|
3 // TAZBOOT main() lives here
|
pascal@19515
|
4
|
pascal@19515
|
5 #include "crtl.h"
|
pascal@19515
|
6 #include "crtlx.h"
|
pascal@19515
|
7 #include "common.h"
|
pascal@19515
|
8 #include "iso9660.h"
|
pascal@19515
|
9
|
pascal@19515
|
10 #define MAXINITRD 10
|
pascal@19515
|
11 static struct initrd_state {
|
pascal@19515
|
12 u32 ofs[MAXINITRD];
|
pascal@19515
|
13 u32 size[MAXINITRD];
|
pascal@19515
|
14 u16 cnt;
|
pascal@19515
|
15 } initrd_state;
|
pascal@19515
|
16
|
pascal@19515
|
17 static void next_chunk(struct image_himem *m)
|
pascal@19515
|
18 {
|
pascal@19636
|
19 struct initrd_state *p = &initrd_state;
|
pascal@19515
|
20 m->chunk_size = 0;
|
pascal@19636
|
21 if (m->state >= p->cnt) return;
|
pascal@19636
|
22 lseekset(m->fd,p->ofs[m->state]);
|
pascal@19636
|
23 m->chunk_size = p->size[m->state];
|
pascal@19515
|
24 m->state++;
|
pascal@19515
|
25 }
|
pascal@19515
|
26
|
pascal@19538
|
27 static u32 isofilesize4round()
|
pascal@19538
|
28 {
|
pascal@19538
|
29 return (isofilesize+3)&-4;
|
pascal@19538
|
30 }
|
pascal@19538
|
31
|
pascal@19515
|
32 static void addinitrd()
|
pascal@19515
|
33 {
|
pascal@19538
|
34 struct initrd_state *p = &initrd_state;
|
pascal@19538
|
35 if (p->cnt >= MAXINITRD) return;
|
pascal@19538
|
36 p->size[p->cnt] = isofilesize;
|
pascal@19538
|
37 p->ofs[p->cnt] = isofileofs;
|
pascal@19538
|
38 p->cnt++;
|
pascal@19538
|
39 initrd.size += isofilesize4round();
|
pascal@19515
|
40 }
|
pascal@19515
|
41
|
pascal@19515
|
42 static void load_initrds()
|
pascal@19515
|
43 {
|
pascal@19538
|
44 struct image_himem *m = &initrd;
|
pascal@19538
|
45 if (!m->size) return;
|
pascal@19538
|
46 m->next_chunk = next_chunk;
|
pascal@19538
|
47 m->fd = isofd;
|
pascal@19538
|
48 m->state = 0;
|
pascal@19538
|
49 next_chunk(m);
|
pascal@19515
|
50 load_initrd();
|
pascal@19515
|
51 }
|
pascal@19515
|
52
|
pascal@19538
|
53 static char *isokernel()
|
pascal@19515
|
54 {
|
pascal@19538
|
55 struct image_himem *m = ±
|
pascal@19538
|
56 m->chunk_size = m->size = isofilesize4round();
|
pascal@19538
|
57 m->fd = isofd;
|
pascal@19538
|
58 return load_kernel();
|
pascal@19515
|
59 }
|
pascal@19515
|
60
|
pascal@19515
|
61 char _cmdline[256];
|
pascal@19515
|
62 const char *cmdline = (const char *) _cmdline;
|
pascal@19515
|
63 static void bootiso(char **iso)
|
pascal@19515
|
64 {
|
pascal@19515
|
65 char *init = " rdinit=/init.exe", *mode="menu";
|
pascal@19571
|
66 char c, rootfs[16], fallback[16];
|
pascal@19515
|
67 int restart, isknoppix = 0;
|
pascal@19515
|
68 unsigned long magic;
|
pascal@19571
|
69 struct isostate *x=&isostate;
|
pascal@19515
|
70
|
pascal@19515
|
71 if (!*iso || isoreset(*iso) < 0) return;
|
pascal@19580
|
72 skip_alloc++;
|
pascal@19580
|
73 base_himem = memtop() /2;
|
pascal@19580
|
74 if (base_himem > _64m) base_himem = _64m;
|
pascal@19515
|
75 isoopen("boot") >= 0 ||
|
pascal@19515
|
76 isoopen("live") >= 0 || // debian
|
pascal@19515
|
77 isoopen("casper") >= 0; // ubuntu
|
pascal@19515
|
78 if (iso[1] && !strcmp(mode = iso[1], "text"))
|
pascal@19515
|
79 init = "";
|
pascal@19515
|
80 do {
|
pascal@19515
|
81 if (isoopen(mode) >= 0 || // custom
|
pascal@19515
|
82 isoopen("bzImage") >= 0 || // SliTaz
|
pascal@19515
|
83 isoopen("vmlinuz") >= 0 || // misc
|
pascal@19515
|
84 (isoopen("linux") >= 0 && ++isknoppix)) {
|
pascal@19538
|
85 magic = kver2ul(isokernel());
|
pascal@19515
|
86 break;
|
pascal@19515
|
87 }
|
pascal@19515
|
88 } while (isoopen("isolinux") >= 0); // Knoppix
|
pascal@19515
|
89 fallback[0] = 0;
|
pascal@19515
|
90 for (c = 0, restart = 1; isoreaddir(restart) == 0; restart = 0) {
|
pascal@19571
|
91 if (strstr(x->filename, ".gz"))
|
pascal@19571
|
92 strcpy(fallback, x->filename);
|
pascal@19571
|
93 if (strhead(x->filename, "rootfs")
|
pascal@19571
|
94 || c > x->filename[6]) continue;
|
pascal@19571
|
95 strcpy(rootfs, x->filename);
|
pascal@19571
|
96 c = x->filename[6];
|
pascal@19515
|
97 }
|
pascal@19515
|
98
|
pascal@19515
|
99 strcpy(_cmdline,"rw root=/dev/null autologin bootfrom=");
|
pascal@19515
|
100 strcat(_cmdline,*iso);
|
pascal@19515
|
101 if (magic < 0x20630)
|
pascal@19515
|
102 init = ""; // Does not support multiple initramfs
|
pascal@19515
|
103
|
pascal@19515
|
104 if (magic > 0) {
|
pascal@19515
|
105 char *initrd = fallback;
|
pascal@19515
|
106
|
pascal@19515
|
107 if (rootfs[0]) {
|
pascal@19515
|
108 initrd = rootfs;
|
pascal@19515
|
109 if (rootfs[6] != '.' && isoopen("rootfs.gz") >= 0)
|
pascal@19515
|
110 addinitrd(); // for loram
|
pascal@19515
|
111 }
|
pascal@19515
|
112 if (isoopen(initrd) >= 0) {
|
pascal@19515
|
113 addinitrd();
|
pascal@19515
|
114 }
|
pascal@19571
|
115 if (*init && isolseek(20L) != -1) {
|
pascal@19571
|
116 read(x->fd, &x->fileofs, 4);
|
pascal@19571
|
117 read(x->fd, &magic, 4);
|
pascal@19571
|
118 x->fileofs &= 0xFFFFL;
|
pascal@19571
|
119 x->filesize = magic & 0xFFFFL;
|
pascal@19571
|
120 x->fileofs -= 0xC0L + x->filesize;
|
pascal@19571
|
121 if (x->filesize) addinitrd();
|
pascal@19515
|
122 else init="";
|
pascal@19515
|
123 }
|
pascal@19515
|
124 load_initrds();
|
pascal@19515
|
125 strcat(_cmdline,init);
|
pascal@19538
|
126 strcatb(_cmdline,"mode=");
|
pascal@19515
|
127 strcat(_cmdline,mode);
|
pascal@19538
|
128 strcatb(_cmdline,"magic=");
|
pascal@19515
|
129 strcat(_cmdline,ultoa(magic));
|
pascal@19515
|
130 }
|
pascal@19515
|
131 if (isknoppix) {
|
pascal@19571
|
132 char *s;
|
pascal@19515
|
133 if (iso[0][1] == ':')
|
pascal@19515
|
134 *iso += 2;
|
pascal@19515
|
135 for (s = *iso; *s; s++)
|
pascal@19515
|
136 if (*s == '\\') *s = '/';
|
pascal@19515
|
137 }
|
pascal@19571
|
138 close(x->fd);
|
pascal@19515
|
139 boot_kernel();
|
pascal@19515
|
140 }
|
pascal@19515
|
141
|
pascal@19515
|
142 u16 root_dev;
|
pascal@19515
|
143 u16 vid_mode;
|
pascal@19515
|
144 const char* kernel_name = "bzImage";
|
pascal@19515
|
145 const char* initrd_name;
|
pascal@19515
|
146 int main(int argc, char *argv[])
|
pascal@19515
|
147 {
|
pascal@19515
|
148 char *iso = NULL;
|
pascal@19515
|
149 argv[0] = progname();
|
pascal@19515
|
150 bootiso(argv); // iso ? parsing is /init.exe stuff !
|
pascal@19515
|
151
|
pascal@19515
|
152 if (argc < 2) {
|
pascal@19546
|
153 try_default_args();
|
pascal@19515
|
154 dousage:
|
pascal@19580
|
155 die("Usage: tazboot [[@commands]|[-f][-b base_himem][kernel=<bzimage>] \
|
pascal@19538
|
156 [initrd=<rootfs>[,<rootfs2>...]] [bootfrom=<isofile>] ...]\r\n\n\
|
pascal@19538
|
157 Defaults: tazboot kernel=bzImage auto\r\n\n\
|
pascal@19538
|
158 Examples for tazboot.cmd:\r\n\n\
|
pascal@19538
|
159 bootfrom=\\isos\\slitaz-4.0.iso\r\n\
|
pascal@19538
|
160 kernel=boot/bzImage\r\n\
|
pascal@19538
|
161 initrd=boot/rootfs4.gz,boot/rootfs3.gz,boot/rootfs2.gz,boot/rootfs1.gz,\\slitaz\\extrafs.gz\r\n\
|
pascal@19538
|
162 rw root=/dev/null vga=normal autologin\r\n\n\
|
pascal@19538
|
163 kernel=\\slitaz\\elks\r\n\
|
pascal@19538
|
164 root=/dev/bda1 ro\r\n");
|
pascal@19515
|
165 }
|
pascal@19546
|
166 bootiso(argv + 1);
|
pascal@19546
|
167 chdirname(*argv);
|
pascal@19538
|
168 for (int i=0;;) {
|
pascal@19546
|
169 char *s;
|
pascal@19580
|
170 next: argv++;
|
pascal@19546
|
171 s=*argv;
|
pascal@19538
|
172 i++;
|
pascal@19538
|
173 if (!s) break;
|
pascal@19538
|
174 if (strhead(s,"kernel=") == 0) {
|
pascal@19538
|
175 s += 7;
|
pascal@19538
|
176 set_kernel:
|
pascal@19538
|
177 kernel_name = s;
|
pascal@19538
|
178 }
|
pascal@19538
|
179 else if (strhead(s,"image=") == 0) {
|
pascal@19538
|
180 s += 6;
|
pascal@19538
|
181 goto set_kernel;
|
pascal@19538
|
182 }
|
pascal@19538
|
183 else if (strhead(s,"initrd=") == 0) {
|
pascal@19538
|
184 s += 7;
|
pascal@19538
|
185 initrd_name = s;
|
pascal@19538
|
186 }
|
pascal@19538
|
187 else if (strhead(s,"bootfrom=") == 0) {
|
pascal@19538
|
188 s += 9;
|
pascal@19538
|
189 set_iso:
|
pascal@19538
|
190 iso = s;
|
pascal@19538
|
191 }
|
pascal@19538
|
192 else if (strhead(s,"iso=") == 0) {
|
pascal@19538
|
193 s += 4;
|
pascal@19538
|
194 goto set_iso;
|
pascal@19538
|
195 }
|
pascal@19515
|
196 else if(strhead(s,"vga=") == 0) {
|
pascal@19538
|
197 s += 4;
|
pascal@19538
|
198 vid_mode = strtol(s); // support normal, extended & ask
|
pascal@19515
|
199 }
|
pascal@19580
|
200 else switch (*(u16 *)s|0x2002) {
|
pascal@19580
|
201 case 0x662F: // -F /f
|
pascal@19580
|
202 skip_alloc++;
|
pascal@19580
|
203 goto next;
|
pascal@19580
|
204 case 0x652F: // -E /e
|
pascal@19580
|
205 argv++;
|
pascal@19580
|
206 topmem = strtol(*argv);
|
pascal@19580
|
207 goto next;
|
pascal@19580
|
208 case 0x622F: // -B /b
|
pascal@19580
|
209 argv++;
|
pascal@19580
|
210 base_himem = strtol(*argv);
|
pascal@19580
|
211 goto next;
|
pascal@19580
|
212 default:
|
pascal@19580
|
213 if(i == 1 && fileattr(s) != -1) {
|
pascal@19538
|
214 goto set_kernel;
|
pascal@19538
|
215 }
|
pascal@19515
|
216 else {
|
pascal@19515
|
217 if(strhead(s,"root=") == 0) {
|
pascal@19538
|
218 s += 5;
|
pascal@19538
|
219 root_dev = strtol(s);
|
pascal@19515
|
220 }
|
pascal@19515
|
221 if(strhead(s,"mem=") == 0) {
|
pascal@19538
|
222 s += 4;
|
pascal@19538
|
223 topmem = strtol(s);
|
pascal@19515
|
224 }
|
pascal@19538
|
225 strcatb(_cmdline,*argv);
|
pascal@19580
|
226 }}
|
pascal@19515
|
227 }
|
pascal@19515
|
228 if (iso && isoreset(iso) >= 0) {
|
pascal@19515
|
229 char *s = (char *) initrd_name;
|
pascal@19515
|
230 if (isoopen((char *) kernel_name) >= 0) {
|
pascal@19515
|
231 isokernel();
|
pascal@19515
|
232 }
|
pascal@19515
|
233 if (s) {
|
pascal@19515
|
234 while (*s) {
|
pascal@19515
|
235 char *p, c;
|
pascal@19515
|
236 for (p = s; *s && *s != ','; s++);
|
pascal@19515
|
237 c = *s; *s = 0;
|
pascal@19515
|
238 if (isoopen(p) >= 0) {
|
pascal@19515
|
239 addinitrd();
|
pascal@19515
|
240 }
|
pascal@19515
|
241 *s = c;
|
pascal@19515
|
242 if (c) s++;
|
pascal@19515
|
243 }
|
pascal@19515
|
244 load_initrds();
|
pascal@19515
|
245 }
|
pascal@19515
|
246 }
|
pascal@19515
|
247 else {
|
pascal@19515
|
248 load_kernel();
|
pascal@19515
|
249 load_initrd();
|
pascal@19515
|
250 }
|
pascal@19515
|
251 boot_kernel();
|
pascal@19515
|
252 return _AX;
|
pascal@19515
|
253 }
|