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@19825
|
10 struct initrd_info {
|
pascal@19825
|
11 u32 ofs;
|
pascal@19825
|
12 u32 size;
|
pascal@19825
|
13 };
|
pascal@19515
|
14 #define MAXINITRD 10
|
pascal@19515
|
15 static struct initrd_state {
|
pascal@19825
|
16 struct initrd_info info[MAXINITRD];
|
pascal@19515
|
17 u16 cnt;
|
pascal@19515
|
18 } initrd_state;
|
pascal@19515
|
19
|
pascal@19515
|
20 static void next_chunk(struct image_himem *m)
|
pascal@19515
|
21 {
|
pascal@21752
|
22 m->chunk_size = 0;
|
pascal@21750
|
23 if (m->state >= initrd_state.cnt) return;
|
pascal@19825
|
24 struct initrd_info *i = &initrd_state.info[m->state];
|
pascal@19825
|
25 m->chunk_size = i->size;
|
pascal@19515
|
26 m->state++;
|
pascal@21750
|
27 lseekset2(m->fd,&i->ofs);
|
pascal@19515
|
28 }
|
pascal@19515
|
29
|
pascal@19538
|
30 static u32 isofilesize4round()
|
pascal@19538
|
31 {
|
pascal@19538
|
32 return (isofilesize+3)&-4;
|
pascal@19538
|
33 }
|
pascal@19538
|
34
|
pascal@19515
|
35 static void addinitrd()
|
pascal@19515
|
36 {
|
pascal@19825
|
37 u16 *pcnt = &initrd_state.cnt;
|
pascal@19825
|
38 if (*pcnt >= MAXINITRD) return;
|
pascal@21750
|
39 struct initrd_info *i = &initrd_state.info[(*pcnt)++];
|
pascal@19825
|
40 i->size = isofilesize;
|
pascal@19825
|
41 i->ofs = isofileofs;
|
pascal@19538
|
42 initrd.size += isofilesize4round();
|
pascal@19515
|
43 }
|
pascal@19515
|
44
|
pascal@19515
|
45 static void load_initrds()
|
pascal@19515
|
46 {
|
pascal@19538
|
47 struct image_himem *m = &initrd;
|
pascal@19538
|
48 if (!m->size) return;
|
pascal@19538
|
49 m->next_chunk = next_chunk;
|
pascal@19538
|
50 m->fd = isofd;
|
pascal@20458
|
51 m->state = 0;
|
pascal@19538
|
52 next_chunk(m);
|
pascal@19515
|
53 load_initrd();
|
pascal@19515
|
54 }
|
pascal@19515
|
55
|
pascal@19538
|
56 static char *isokernel()
|
pascal@19515
|
57 {
|
pascal@19538
|
58 struct image_himem *m = ±
|
pascal@19538
|
59 m->chunk_size = m->size = isofilesize4round();
|
pascal@19538
|
60 m->fd = isofd;
|
pascal@22170
|
61 load_kernel();
|
pascal@22170
|
62 return version_string;
|
pascal@19515
|
63 }
|
pascal@19515
|
64
|
pascal@20486
|
65 static char buf_cmdline[4096];
|
pascal@20486
|
66 const char *cmdline = (const char *) buf_cmdline+1;
|
pascal@19515
|
67 static void bootiso(char **iso)
|
pascal@19515
|
68 {
|
pascal@19825
|
69 const char *init = " rdinit=/init.exe", *mode="menu";
|
pascal@19825
|
70 char c;
|
pascal@21801
|
71 static char rootfs[16], fallback[16], noauto;
|
pascal@19515
|
72 unsigned long magic;
|
pascal@19571
|
73 struct isostate *x=&isostate;
|
pascal@19515
|
74
|
pascal@21628
|
75 if (isoreset(*iso) == -1) return;
|
pascal@22632
|
76 skip_alloc--;
|
pascal@19580
|
77 base_himem = memtop() /2;
|
pascal@20473
|
78 //if (base_himem >= _64m) base_himem = _64m;
|
pascal@21750
|
79 if (* ((char *) &base_himem +3) >= 4) ((short *)&base_himem)[1] = _64m/_64k;
|
pascal@21801
|
80 isoopen("boot");
|
pascal@19515
|
81 if (iso[1] && !strcmp(mode = iso[1], "text"))
|
pascal@19515
|
82 init = "";
|
pascal@21801
|
83 if (isoopen(mode) == -1 || ++noauto == 0) // custom
|
pascal@21801
|
84 isoopen("bzImage"); // SliTaz
|
pascal@21801
|
85 magic = kver2ul(isokernel());
|
pascal@21576
|
86 for (c = 0, x->curdirsize = 0xFFFF; isoreaddir() != -1;) {
|
pascal@19571
|
87 if (strstr(x->filename, ".gz"))
|
pascal@19571
|
88 strcpy(fallback, x->filename);
|
pascal@21628
|
89 if (strhead(x->filename, "rootfs") == -1
|
pascal@19571
|
90 || c > x->filename[6]) continue;
|
pascal@21750
|
91 c = x->filename[6];
|
pascal@19571
|
92 strcpy(rootfs, x->filename);
|
pascal@19515
|
93 }
|
pascal@19515
|
94
|
pascal@21801
|
95 strcatb(buf_cmdline,"autologin bootfrom=");
|
pascal@20486
|
96 strcat(buf_cmdline,*iso);
|
pascal@19515
|
97 if (magic < 0x20630)
|
pascal@19515
|
98 init = ""; // Does not support multiple initramfs
|
pascal@19515
|
99
|
pascal@19825
|
100 if (noauto) {
|
pascal@19825
|
101 char *s;
|
pascal@20486
|
102 * (int *) buf_cmdline = 0;
|
pascal@19825
|
103 iso++;
|
pascal@19825
|
104 while ((s = *++iso) != NULL) {
|
pascal@21628
|
105 if (strhead(s,"initrd=") == -1)
|
pascal@20486
|
106 strcatb(buf_cmdline,s);
|
pascal@21628
|
107 else if (isoopen(s+7) != -1)
|
pascal@19825
|
108 addinitrd();
|
pascal@19825
|
109 }
|
pascal@19825
|
110 }
|
pascal@21754
|
111 else if (magic != 0) {
|
pascal@19872
|
112 static const unsigned long initrddesc = 18L;
|
pascal@19515
|
113
|
pascal@21801
|
114 if (isoopen("rootfs.gz") != -1 ||
|
pascal@21801
|
115 isoopen(rootfs[0] ? rootfs : fallback) != -1) {
|
pascal@19515
|
116 addinitrd();
|
pascal@19515
|
117 }
|
pascal@20528
|
118 if (*init && isolseek(&initrddesc) != 0) {
|
pascal@19872
|
119 read(x->fd, &x->filemod, 10); // + x->fileofs & x->filesize
|
pascal@19872
|
120 magic = x->filemod;
|
pascal@20876
|
121 x->fileofs = 0x7FF0 - (x->filesize &= 0xFFFF);
|
pascal@19825
|
122 if (((short *) &x->fileofs)[1] == 0) addinitrd();
|
pascal@19515
|
123 else init="";
|
pascal@19515
|
124 }
|
pascal@20486
|
125 strcat(buf_cmdline,init);
|
pascal@20486
|
126 strcatb(buf_cmdline,"mode=");
|
pascal@20486
|
127 strcat(buf_cmdline,mode);
|
pascal@20486
|
128 strcatb(buf_cmdline,"magic=");
|
pascal@20528
|
129 strcat(buf_cmdline,(char *)ultoa(magic));
|
pascal@19515
|
130 }
|
pascal@19825
|
131 load_initrds();
|
pascal@19571
|
132 close(x->fd);
|
pascal@19515
|
133 boot_kernel();
|
pascal@19515
|
134 }
|
pascal@19515
|
135
|
pascal@20528
|
136 u32 root_dev;
|
pascal@20528
|
137 u32 vid_mode;
|
pascal@20528
|
138 u32 topmem;
|
pascal@21569
|
139 u32 base_himem;
|
pascal@19515
|
140 const char* kernel_name = "bzImage";
|
pascal@19515
|
141 const char* initrd_name;
|
pascal@21998
|
142 static char* iso;
|
pascal@20528
|
143
|
pascal@19515
|
144 int main(int argc, char *argv[])
|
pascal@19515
|
145 {
|
pascal@21569
|
146 ((u16*) &base_himem)[1] |= (_1m+_64k)>>16; // base_himem = _1m+_64k
|
pascal@19515
|
147
|
pascal@19515
|
148 if (argc < 2) {
|
pascal@19546
|
149 try_default_args();
|
pascal@19515
|
150 dousage:
|
pascal@20451
|
151 die("Usage: tazboot [[@commands]|[-f][-b base_himem][kernel=<bzImage>] \
|
pascal@21757
|
152 [initrd=<rootfs>[,<rootfs2>...]] [bootfrom=<isofile>] ...]\n\n\
|
pascal@21757
|
153 Defaults: tazboot kernel=bzImage auto\n\n\
|
pascal@21757
|
154 Examples for tazboot.cmd:\n\n\
|
pascal@21757
|
155 bootfrom=\\isos\\slitaz-4.0.iso\n\
|
pascal@21757
|
156 kernel=boot/bzImage\n\
|
pascal@21757
|
157 initrd=boot/rootfs4.gz,boot/rootfs3.gz,boot/rootfs2.gz,boot/rootfs1.gz,\\slitaz\\extrafs.gz\n\
|
pascal@21822
|
158 vga=normal autologin\n\n\
|
pascal@21757
|
159 kernel=\\slitaz\\elks\n\
|
pascal@21757
|
160 root=/dev/bda1 ro\n");
|
pascal@19515
|
161 }
|
pascal@21791
|
162 bootiso(argv + 1); // iso ? parsing is /init.exe stuff !
|
pascal@19538
|
163 for (int i=0;;) {
|
pascal@19546
|
164 char *s;
|
pascal@19580
|
165 next: argv++;
|
pascal@19546
|
166 s=*argv;
|
pascal@19538
|
167 i++;
|
pascal@21791
|
168 if (!s) {
|
pascal@21791
|
169 if (isoreset(iso) != -1) {
|
pascal@21791
|
170 s = (char *) initrd_name;
|
pascal@21791
|
171 if (isoopen((char *) kernel_name) != -1) {
|
pascal@21791
|
172 isokernel();
|
pascal@21791
|
173 }
|
pascal@21791
|
174 if (s) {
|
pascal@21791
|
175 do {
|
pascal@21791
|
176 char *p, c;
|
pascal@21791
|
177 for (p = s; *s && *s != ','; s++);
|
pascal@21791
|
178 c = *s; *s = 0;
|
pascal@21791
|
179 if (isoopen(p) != -1) {
|
pascal@21791
|
180 addinitrd();
|
pascal@21791
|
181 }
|
pascal@21791
|
182 *s = c;
|
pascal@21791
|
183 if (c) s++;
|
pascal@21791
|
184 } while (*s);
|
pascal@21791
|
185 load_initrds();
|
pascal@21791
|
186 }
|
pascal@21791
|
187 }
|
pascal@21791
|
188 else {
|
pascal@21791
|
189 load_kernel();
|
pascal@21791
|
190 load_initrd();
|
pascal@21791
|
191 }
|
pascal@21791
|
192 boot_kernel();
|
pascal@21791
|
193 }
|
pascal@20751
|
194 #ifdef USE_ARGSTR
|
pascal@20751
|
195 if ((*(u16 *)s|0x2002) == 0x662F) { // -F /f
|
pascal@22632
|
196 skip_alloc--;
|
pascal@20751
|
197 goto next;
|
pascal@20751
|
198 }
|
pascal@21576
|
199 if (argstr(s,"kernel/image|initrd|bootfrom/iso",&kernel_name) != -1);
|
pascal@21576
|
200 else if (argnum(s,"root|vga|mem/-e|-b",&root_dev) != -1);
|
pascal@20751
|
201 else if(i == 1 && fileexist(s) != -1) {
|
pascal@20751
|
202 kernel_name = s;
|
pascal@20751
|
203 }
|
pascal@21569
|
204 else strcatb(buf_cmdline,*argv); // FIXME mem ?
|
pascal@20751
|
205 }
|
pascal@20751
|
206 #else
|
pascal@21791
|
207 if (strhead(s,"initrd=") != -1) {
|
pascal@21791
|
208 s += 7;
|
pascal@21791
|
209 initrd_name = s;
|
pascal@21791
|
210 }
|
pascal@21791
|
211 else if (strhead(s,"bootfrom=") != -1) {
|
pascal@21791
|
212 s += 9;
|
pascal@21791
|
213 goto set_iso;
|
pascal@21791
|
214 }
|
pascal@21791
|
215 else if (strhead(s,"iso=") != -1) {
|
pascal@21791
|
216 s += 4;
|
pascal@21791
|
217 set_iso:
|
pascal@21791
|
218 iso = s;
|
pascal@21791
|
219 }
|
pascal@21791
|
220 else if (strhead(s,"image=") != -1) {
|
pascal@21791
|
221 goto set_kernel;
|
pascal@21791
|
222 }
|
pascal@21791
|
223 else if(strhead(s,"vga=") != -1) {
|
pascal@21791
|
224 *(u16*)&vid_mode = (u16)strtol(s+4); // support normal, extended & ask
|
pascal@21791
|
225 }
|
pascal@21791
|
226 else if (strhead(s,"kernel=") != -1) {
|
pascal@19825
|
227 s++;
|
pascal@19538
|
228 set_kernel:
|
pascal@19825
|
229 s += 6;
|
pascal@19898
|
230 set_kernelz:
|
pascal@19538
|
231 kernel_name = s;
|
pascal@19538
|
232 }
|
pascal@19580
|
233 else switch (*(u16 *)s|0x2002) {
|
pascal@19580
|
234 case 0x662F: // -F /f
|
pascal@22632
|
235 skip_alloc--;
|
pascal@19580
|
236 goto next;
|
pascal@19580
|
237 case 0x652F: // -E /e
|
pascal@21569
|
238 s=*++argv;
|
pascal@21569
|
239 goto set_topmem;
|
pascal@19580
|
240 case 0x622F: // -B /b
|
pascal@19580
|
241 argv++;
|
pascal@21569
|
242 ((u16 *)&base_himem)[1] = (u16)(strtol(*argv)>>16);
|
pascal@19580
|
243 goto next;
|
pascal@19580
|
244 default:
|
pascal@20632
|
245 if(i == 1 && fileexist(s) != -1) {
|
pascal@19898
|
246 goto set_kernelz;
|
pascal@19538
|
247 }
|
pascal@19515
|
248 else {
|
pascal@21569
|
249 strcatb(buf_cmdline,*argv);
|
pascal@21628
|
250 if(strhead(s,"root=") != -1) {
|
pascal@21569
|
251 *(u16*)&root_dev = (u16)strtol(s+5);
|
pascal@19515
|
252 }
|
pascal@21628
|
253 if(strhead(s,"mem=") != -1) {
|
pascal@19538
|
254 s += 4;
|
pascal@21569
|
255 set_topmem:
|
pascal@21569
|
256 ((u16 *)&topmem)[1] = (u16)(strtol(s)>>16);
|
pascal@19515
|
257 }
|
pascal@19580
|
258 }}
|
pascal@19515
|
259 }
|
pascal@20751
|
260 #endif
|
pascal@19515
|
261 }
|