Mercurial > hg > Members > kono > os9 > sbc09
annotate os9/makerom.c @ 34:2032755628dc
fix for nitros9
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 15 Jul 2018 14:18:19 +0900 |
| parents | 7c5379eb406e |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* makerom.c |
| 2 build ROM image file os9.rom from module list | |
| 11 | 3 |
| 4 Shinji KONO Fri Jul 6 13:31:52 JST 2018 | |
| 5 | |
| 0 | 6 */ |
| 7 | |
| 8 #include <stdio.h> | |
| 9 #include <stdlib.h> | |
| 10 #include <strings.h> | |
| 11 #include <sys/stat.h> | |
| 12 | |
| 11 | 13 // #define DEBUG 1 |
| 14 | |
| 15 /* | |
| 16 * Level1 | |
| 17 * os9p1 should be 0xf800 | |
| 18 * it searches ram from the beginning | |
| 19 * rom modules are searched from just after the end of RAM | |
| 20 * | |
| 21 * Level2 | |
| 22 * Coco 512kb memory space | |
| 23 * last 8k is a ROM (can be switched?) ( block 0x3f ) | |
| 24 * os9p1 search module on 0x0d00~0x1e00 at block 0x3f | |
| 25 * | |
| 26 * 8k block ( offset 0xc000 ) | |
| 27 * | |
| 28 * 0xe000 - 0xccff 0xff | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
29 * 0xed00 - 0xfeff os9 modules, os9p1 should be the last |
| 11 | 30 * MMU doesnot touch below |
| 31 * 0xff80 - 0xffdf IO port ( ACIA, clock, pdisk, MMU ) | |
| 32 * 0xffd0 - 0xffef boot code | |
| 33 * 0xfff0 - 0xffff intr vector | |
| 34 * ... next few blocks as extended ROM | |
| 35 * | |
| 36 */ | |
| 37 | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
38 int level = 1; |
| 6 | 39 int IOBASE = 0xe000; |
| 40 int IOSIZE = 0x100; | |
| 41 char * outfile ; | |
| 0 | 42 |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
43 #define LV2START 0xffd0 // our own small boot for mmu |
| 17 | 44 #define LV2ROMEND 0xff80 |
| 9 | 45 |
| 8 | 46 // #define DEBUG |
| 47 | |
| 0 | 48 typedef struct os9module { |
| 49 int size; | |
| 34 | 50 int entry; |
| 0 | 51 int location; |
| 52 int ioflag; | |
| 53 unsigned char *mod; | |
| 54 char *name; | |
| 55 struct os9module *next; | |
| 56 } *MPTR ; | |
| 57 | |
| 33 | 58 unsigned short vec[8]; |
| 59 | |
| 0 | 60 struct os9module * |
| 61 readOS9module(char *filename) | |
| 62 { | |
| 63 FILE *fp = fopen(filename,"rb"); | |
| 64 if (fp==0) { | |
| 65 fprintf(stderr,"cannot read %s\n",filename); | |
| 66 exit(1); | |
| 67 } | |
| 68 struct stat st; | |
| 69 fstat(fileno(fp),&st); | |
| 70 int size = st.st_size; | |
| 71 struct os9module *m = malloc(size + sizeof(struct os9module)); | |
| 72 m->size = size; | |
| 73 m->next = 0; | |
| 74 m->ioflag = 0; | |
| 75 m->mod = (unsigned char*)m + sizeof(struct os9module); | |
| 76 fread(m->mod , size, 1, fp); | |
| 77 m->name = (char*) (m->mod + (m->mod[4]*256 + m->mod[5]) ); | |
| 34 | 78 m->entry = m->mod[9]*256 + m->mod[10] ; |
| 0 | 79 fclose(fp); |
| 80 return m; | |
| 81 } | |
| 82 | |
| 83 void | |
| 84 fputword(unsigned short x, FILE *fp) | |
| 85 { | |
| 86 fputc((x>>8)&0xff,fp); | |
| 87 fputc(x&0xff,fp); | |
| 88 } | |
| 89 | |
| 90 void printOs9Str(char *p) | |
| 91 { | |
| 34 | 92 char *q = p; |
| 0 | 93 while((*p & 0x80)==0) { |
| 94 putchar(*p); | |
| 95 p++; | |
| 96 } | |
| 97 putchar(*p & 0x7f); | |
| 34 | 98 while(p<q+8) { |
| 99 putchar(' '); p++; | |
| 100 } | |
| 0 | 101 } |
| 102 | |
| 10 | 103 unsigned short |
| 104 getword(unsigned char *ptr) | |
| 105 { | |
| 106 return (ptr[0]<<8)+ptr[1]; | |
| 107 } | |
| 108 | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
109 void rewrite_vector(MPTR m,int size, unsigned char *adr,int count) |
| 10 | 110 { |
| 111 // vector is a offset from $F100 (possibly os9p1 module address) | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
112 int offset = -size-0xf100; |
| 10 | 113 for(int i=0;i<count;i++) { |
| 114 int vec = getword(adr); | |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
115 vec += offset; |
| 10 | 116 adr[0] = vec>>8; |
| 117 adr[1] = vec&0xff; | |
| 118 adr += 2; | |
| 119 } | |
| 120 } | |
| 121 | |
| 33 | 122 int search_vector(MPTR m) { |
| 123 unsigned char v[] = { 0x6E, 0x9F, 0x00, 0x2C, 0x6E}; | |
| 124 for( unsigned char *p = m->mod ; p < m->mod + m->size; p++ ) { | |
| 125 int i=0; | |
| 126 for(; i< sizeof(v); i++) { | |
| 127 if (p[i]!=v[i]) break; | |
| 128 } | |
| 129 if (i==sizeof(v)) | |
| 130 return p - m->mod; | |
| 131 } | |
| 132 return 0; | |
| 133 } | |
| 134 | |
| 1 | 135 // calcurate position from the botton |
| 136 // avoid v09 IO map on 0xe000-0xe800 | |
| 137 // os9p1 have to be last and at 0xf800 | |
| 0 | 138 int findLocation(MPTR m, int loc) { |
| 139 if (m==0) return loc; | |
| 140 int top = findLocation(m->next, loc) - m->size; | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
141 if (m->next==0) { |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
142 if (level == 1) |
| 33 | 143 if (m->size > 0xff80-0xf800 ) { |
| 144 top = 0x10000-(m->size+0x80); | |
| 145 } else { | |
| 146 top = 0xf800; // OS9p1 | |
| 147 } | |
| 10 | 148 else { |
| 33 | 149 #if 0 |
| 150 // old level2 kernel has vector at the bottom | |
| 17 | 151 top = 0x10000-(m->size+0x80); |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
152 rewrite_vector(m,m->size,m->mod+getword(m->mod+2),7); |
| 33 | 153 #else |
| 154 top = 0xf000; // level2 OS9p1 starts here | |
| 155 // and theses area are RAM /REGISTER STACK/ | |
| 156 #endif | |
| 10 | 157 } |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
158 } |
| 8 | 159 if (level==1 && !(( top+m->size < IOBASE ) || ( IOBASE+IOSIZE < top)) ) { |
| 0 | 160 top = IOBASE-m->size-1; |
| 161 m->ioflag = 1; | |
| 8 | 162 #ifdef DEBUG |
| 163 printf("*"); | |
| 164 #endif | |
| 11 | 165 } else if (level==2 && 0xed00 > top) { |
| 166 m->ioflag = 1; | |
| 0 | 167 } |
| 168 m->location = top; | |
| 8 | 169 #ifdef DEBUG |
| 170 printf("mod "); | |
| 171 printOs9Str(m->name); | |
| 172 printf(" \t: 0x%x - 0x%x\n",top, top + m->size); | |
| 173 #endif | |
| 0 | 174 return top; |
| 175 } | |
| 176 | |
| 177 int | |
| 178 main(int ac, char *av[]) | |
| 179 { | |
| 180 int vectable = 0; | |
| 181 struct os9module *m = 0, root ; | |
| 182 root.size = 0; | |
| 183 root.mod = 0; | |
| 184 m = &root; | |
| 185 | |
| 6 | 186 for(int i = 1 ; i<ac ; i++ ) { |
| 187 if (*av[i]=='-') { | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
188 if (av[i][1] =='2') { // for level 2 |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
189 level = 2; |
|
12
111e5defb8ab
boot is called, rti failed
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
11
diff
changeset
|
190 IOBASE = LV2ROMEND; |
| 6 | 191 } else if (av[i][1] =='o') { |
| 192 outfile = av[i+1]; | |
| 193 i += 1; | |
| 194 } else { | |
| 195 return 1; | |
| 196 } | |
| 197 continue; | |
| 198 } | |
| 0 | 199 struct os9module *cur; |
| 200 cur = readOS9module(av[i]); | |
| 201 m->next = cur; | |
| 202 m = cur; | |
| 203 } | |
| 204 | |
| 205 FILE *romfile; | |
| 206 unsigned pos; | |
| 6 | 207 if (outfile==0) return 1; |
| 0 | 208 |
| 6 | 209 romfile=fopen(outfile,"wb"); |
| 0 | 210 if(!romfile) { |
| 211 fprintf(stderr,"Cannot create file %s\n",av[1]); | |
| 212 exit(1); | |
| 213 } | |
| 214 | |
| 215 | |
| 216 int start = findLocation(root.next,0); | |
| 217 start = start&0xf800; | |
| 218 printf("\n\n"); | |
| 219 | |
| 11 | 220 if (level==2) { |
| 221 for(int i=0; i<0xd00; i++) fputc(0xff,romfile); | |
| 222 pos = 0xed00; | |
| 223 } else { | |
| 224 pos = start; | |
| 225 } | |
| 33 | 226 int ofs = 0; |
| 8 | 227 struct os9module *os9p1 = 0; |
| 0 | 228 for(struct os9module *cur = root.next; cur ; cur = cur->next ) { |
| 11 | 229 if ( level==2 && cur->ioflag ==1) continue; |
| 6 | 230 // last module have to os9p1 |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
231 if ( cur->next == 0 ) { |
| 8 | 232 os9p1 = cur; |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
233 if ( level==1 ) { |
| 33 | 234 if (os9p1->size > 0x07f0) { |
| 235 ofs = (os9p1->size+0xf)&0xfff0; | |
| 236 ofs -= 0x07f0; | |
| 237 } | |
| 238 for(; pos < 0xf800-ofs ; pos++) { // os9p1 begins at 0xf800 | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
239 fputc(0xff,romfile); |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
240 } |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
241 } else { |
| 33 | 242 #if 0 |
| 17 | 243 int pend = 0x10000-( cur->size +0x80); |
| 244 for(; pos < pend ; pos++) { // os9p1 ends 0xff7f | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
245 fputc(0xff,romfile); |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
246 } |
| 33 | 247 #endif |
| 248 for(; pos < 0xf000 ; pos++) { // level2 os9p1 start from 0xf000 | |
| 249 fputc(0xff,romfile); | |
| 250 } | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
251 } |
| 0 | 252 } |
| 253 printf("mod "); | |
| 254 printOs9Str(cur->name); | |
| 33 | 255 cur->location = pos; |
| 0 | 256 fwrite(cur->mod, cur->size, 1, romfile); |
| 34 | 257 printf(" \t: 0x%x - 0x%x size 0x%04x entry 0x%x\n",pos, pos + cur->size-1,cur->size,cur->entry+cur->location); |
| 8 | 258 #ifdef DEBUG |
| 259 printf(" \t: 0x%x \n",cur->location); | |
| 260 printf(" \t: 0x%x - 0x%x : 0x%lx \n",pos, pos + cur->size, ftell(romfile)+start); | |
| 261 #endif | |
| 0 | 262 pos = pos+cur->size; |
| 11 | 263 if (level==1 && cur->ioflag) { |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
264 if (level==1) { |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
265 for(; pos < IOBASE + IOSIZE; pos++) { |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
266 fputc(0xff,romfile); |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
267 } |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
268 printf("*"); |
| 8 | 269 } |
| 0 | 270 } |
| 271 } | |
| 272 printf("os9 end %x\n",pos); | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
273 if (level==1) { |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
274 vectable = 0x10000 - 2*7; |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
275 for( ; pos<vectable; pos++) fputc(0xff,romfile); |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
276 printf("vectbl %x\n",pos); |
| 33 | 277 if (1) { |
| 278 int vecofs = search_vector(os9p1); | |
| 279 if (vecofs==0) { | |
| 280 printf("can't find vector\n"); | |
| 281 } | |
| 34 | 282 static int perm[] = {0,1,5,4,2,3}; |
| 33 | 283 for(int i=0;i<6;i++) { |
| 34 | 284 fputword(os9p1->location +vecofs+perm[i]*4,romfile); |
| 33 | 285 } |
| 286 int entry_ofs = (m->mod[9]<<8) + m->mod[10]; | |
| 287 fputword( os9p1->location + entry_ofs ,romfile); | |
| 288 // printf("os9p1 location ofs %0x\n", os9p1->location); | |
| 289 // printf("vector ofs %0x\n", vecofs); | |
| 290 // printf("reset ofs %0x\n", entry_ofs); | |
| 291 } else { | |
| 292 fputword(0xF82d-ofs,romfile); | |
| 293 fputword(0xF831-ofs,romfile); | |
| 294 fputword(0xF835-ofs,romfile); | |
| 295 fputword(0xF839-ofs,romfile); | |
| 296 fputword(0xF83d-ofs,romfile); | |
| 297 fputword(0xF841-ofs,romfile); | |
| 298 fputword(0xF876-ofs,romfile); | |
| 299 } | |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
300 } else { |
| 8 | 301 char vector[] = "level2/vector"; |
| 302 FILE *fp = fopen(vector,"rb"); | |
| 303 if (fp==0) { | |
| 304 fprintf(stderr,"cannot read %s\n",vector); | |
| 305 exit(1); | |
| 306 } | |
| 9 | 307 for( ; pos<LV2START; pos++) fputc(0xff,romfile); |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
308 printf("vectbl %x\n",pos); |
| 8 | 309 for( ; pos<0xfff0; pos++) fputc(fgetc(fp),romfile); |
| 310 #ifdef DEBUG | |
| 311 printf("os9entry %x\n",os9p1->location); | |
| 312 #endif | |
| 313 printf("os9entry %x\n",os9p1->location+getword(os9p1->mod+9)); | |
| 314 | |
| 315 fputword(os9p1->location+getword(os9p1->mod+9),romfile); // os9p1 entry point | |
| 11 | 316 unsigned short vec = os9p1->location+os9p1->size - 18; |
| 8 | 317 fputword(vec,romfile); |
| 318 fputword(vec+3,romfile); | |
| 319 fputword(vec+6,romfile); | |
| 320 | |
| 321 fputword(vec+9,romfile); | |
| 322 fputword(vec+12,romfile); | |
| 323 fputword(vec+15,romfile); | |
| 9 | 324 fputword(LV2START,romfile); |
| 11 | 325 |
| 326 pos = 0x10000; | |
| 15 | 327 int bootsize = 2; |
| 328 for(struct os9module *cur = root.next; cur ; cur = cur->next ) { | |
| 329 if ( cur->ioflag ==0) continue; | |
| 330 bootsize += cur->size; | |
| 331 } | |
| 332 fputc(bootsize>>8,romfile); | |
| 333 fputc(bootsize&0xff,romfile); | |
| 334 pos += 2; | |
| 11 | 335 for(struct os9module *cur = root.next; cur ; cur = cur->next ) { |
| 336 if ( cur->ioflag ==0) continue; | |
| 33 | 337 cur->location = pos; |
| 11 | 338 printf("mod "); |
| 339 printOs9Str(cur->name); | |
| 340 fwrite(cur->mod, cur->size, 1, romfile); | |
| 34 | 341 printf(" \t: 0x%x - 0x%x size 0x%04x entry 0x%x\n",pos, pos + cur->size-1, cur->size, cur->entry+cur->location); |
| 11 | 342 #ifdef DEBUG |
| 343 printf(" \t: 0x%x \n",cur->location); | |
| 344 printf(" \t: 0x%x - 0x%x : 0x%lx \n",pos, pos + cur->size, ftell(romfile)+start); | |
| 345 #endif | |
| 15 | 346 pos += cur->size; |
| 11 | 347 } |
| 30 | 348 while(pos++ & 0xff) fputc(0xff,romfile); |
|
7
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
349 } |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
350 if (level==1) |
|
a6db579d8c11
level 2 rom preparing...
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
6
diff
changeset
|
351 printf("boot rom from 0x%lx\n",0x10000-ftell(romfile)); |
| 30 | 352 else { |
| 353 long size; | |
| 354 printf("boot rom from 0xc000 size 0x%lx\n",(size=ftell(romfile))); | |
| 355 if (size > 0x4d00 + 0x2000) { | |
| 356 printf(" was too big. make it less than 0x6d00\n"); | |
| 357 } | |
| 358 } | |
| 0 | 359 fclose(romfile); |
| 360 return 0; | |
| 361 } | |
| 11 | 362 |
| 363 |