root/platform/ixus220_elph300hs/sub/101g/boot.c

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DEFINITIONS

This source file includes following definitions.
  1. taskHook
  2. CreateTask_spytask
  3. boot
  4. sub_FF810358_my
  5. sub_FF8111B0_my
  6. sub_FF815EE0_my
  7. taskcreate_Startup_my
  8. task_Startup_my
  9. taskcreatePhySw_my
  10. init_file_modules_task

   1 /*
   2  * boot.c - auto-generated by CHDK code_gen.
   3  */
   4 #include "lolevel.h"
   5 #include "platform.h"
   6 #include "core.h"
   7 #include "dryos31.h"
   8 
   9 #define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
  10 
  11 const char * const new_sa = &_end;
  12 
  13 // Forward declarations
  14 extern void task_CaptSeq();
  15 extern void task_InitFileModules();
  16 extern void task_MovieRecord();
  17 extern void task_ExpDrv();
  18 //extern void task_FileWrite();
  19 
  20 void taskHook(context_t **context)
  21 { 
  22         task_t *tcb=(task_t*)((char*)context-offsetof(task_t, context));
  23 
  24         // Replace firmware task addresses with ours
  25         if(tcb->entry == (void*)task_CaptSeq)           tcb->entry = (void*)capt_seq_task;
  26         if(tcb->entry == (void*)task_InitFileModules)   tcb->entry = (void*)init_file_modules_task;
  27         if(tcb->entry == (void*)task_MovieRecord)       tcb->entry = (void*)movie_record_task;
  28         if(tcb->entry == (void*)task_ExpDrv)            tcb->entry = (void*)exp_drv_task;
  29         //if(tcb->entry == (void*)task_FileWrite)         tcb->entry = (void*)filewritetask;
  30 }
  31 
  32 /*----------------------------------------------------------------------
  33         CreateTask --> core_spytask
  34 -----------------------------------------------------------------------*/
  35 void CreateTask_spytask()
  36 {
  37         _CreateTask("SpyTask", 0x19, 0x2000, core_spytask, 0);
  38 }
  39 
  40 /*----------------------------------------------------------------------
  41         boot()
  42 
  43         Main entry point for the CHDK code
  44 -----------------------------------------------------------------------*/
  45 
  46 /*************************************************************/
  47 //** boot @ 0xFF81000C - 0xFF810160, length=86
  48 void __attribute__((naked,noinline)) boot() {
  49 asm volatile (
  50 "    LDR     R1, =0xC0410000 \n"
  51 "    MOV     R0, #0 \n"
  52 "    STR     R0, [R1] \n"
  53 "    MOV     R1, #0x78 \n"
  54 "    MCR     p15, 0, R1, c1, c0 \n"
  55 "    MOV     R1, #0 \n"
  56 "    MCR     p15, 0, R1, c7, c10, 4 \n"
  57 "    MCR     p15, 0, R1, c7, c5 \n"
  58 "    MCR     p15, 0, R1, c7, c6 \n"
  59 "    MOV     R0, #0x3D \n"
  60 "    MCR     p15, 0, R0, c6, c0 \n"
  61 "    MOV     R0, #0xC000002F \n"
  62 "    MCR     p15, 0, R0, c6, c1 \n"
  63 "    MOV     R0, #0x35 \n"
  64 "    MCR     p15, 0, R0, c6, c2 \n"
  65 "    MOV     R0, #0x40000035 \n"
  66 "    MCR     p15, 0, R0, c6, c3 \n"
  67 "    MOV     R0, #0x80000017 \n"
  68 "    MCR     p15, 0, R0, c6, c4 \n"
  69 "    LDR     R0, =0xFF80002D \n"
  70 "    MCR     p15, 0, R0, c6, c5 \n"
  71 "    MOV     R0, #0x34 \n"
  72 "    MCR     p15, 0, R0, c2, c0 \n"
  73 "    MOV     R0, #0x34 \n"
  74 "    MCR     p15, 0, R0, c2, c0, 1 \n"
  75 "    MOV     R0, #0x34 \n"
  76 "    MCR     p15, 0, R0, c3, c0 \n"
  77 "    LDR     R0, =0x3333330 \n"
  78 "    MCR     p15, 0, R0, c5, c0, 2 \n"
  79 "    LDR     R0, =0x3333330 \n"
  80 "    MCR     p15, 0, R0, c5, c0, 3 \n"
  81 "    MRC     p15, 0, R0, c1, c0 \n"
  82 "    ORR     R0, R0, #0x1000 \n"
  83 "    ORR     R0, R0, #4 \n"
  84 "    ORR     R0, R0, #1 \n"
  85 "    MCR     p15, 0, R0, c1, c0 \n"
  86 "    MOV     R1, #0x80000006 \n"
  87 "    MCR     p15, 0, R1, c9, c1 \n"
  88 "    MOV     R1, #6 \n"
  89 "    MCR     p15, 0, R1, c9, c1, 1 \n"
  90 "    MRC     p15, 0, R1, c1, c0 \n"
  91 "    ORR     R1, R1, #0x50000 \n"
  92 "    MCR     p15, 0, R1, c1, c0 \n"
  93 "    LDR     R2, =0xC0200000 \n"
  94 "    MOV     R1, #1 \n"
  95 "    STR     R1, [R2, #0x10C] \n"
  96 "    MOV     R1, #0xFF \n"
  97 "    STR     R1, [R2, #0xC] \n"
  98 "    STR     R1, [R2, #0x1C] \n"
  99 "    STR     R1, [R2, #0x2C] \n"
 100 "    STR     R1, [R2, #0x3C] \n"
 101 "    STR     R1, [R2, #0x4C] \n"
 102 "    STR     R1, [R2, #0x5C] \n"
 103 "    STR     R1, [R2, #0x6C] \n"
 104 "    STR     R1, [R2, #0x7C] \n"
 105 "    STR     R1, [R2, #0x8C] \n"
 106 "    STR     R1, [R2, #0x9C] \n"
 107 "    STR     R1, [R2, #0xAC] \n"
 108 "    STR     R1, [R2, #0xBC] \n"
 109 "    STR     R1, [R2, #0xCC] \n"
 110 "    STR     R1, [R2, #0xDC] \n"
 111 "    STR     R1, [R2, #0xEC] \n"
 112 "    STR     R1, [R2, #0xFC] \n"
 113 "    LDR     R1, =0xC0400008 \n"
 114 "    LDR     R2, =0x430005 \n"
 115 "    STR     R2, [R1] \n"
 116 "    MOV     R1, #1 \n"
 117 "    LDR     R2, =0xC0243100 \n"
 118 "    STR     R2, [R1] \n"
 119 "    LDR     R2, =0xC0242010 \n"
 120 "    LDR     R1, [R2] \n"
 121 "    ORR     R1, R1, #1 \n"
 122 "    STR     R1, [R2] \n"
 123 "    LDR     R0, =0xFFC8AB88 \n"
 124 "    LDR     R1, =0x1900 \n"
 125 "    LDR     R3, =0x1049C \n"
 126 
 127 "loc_FF81013C:\n"
 128 "    CMP     R1, R3 \n"
 129 "    LDRCC   R2, [R0], #4 \n"
 130 "    STRCC   R2, [R1], #4 \n"
 131 "    BCC     loc_FF81013C \n"
 132 "    LDR     R1, =0x1774EC \n"
 133 "    MOV     R2, #0 \n"
 134 
 135 "loc_FF810154:\n"
 136 "    CMP     R3, R1 \n"
 137 "    STRCC   R2, [R3], #4 \n"
 138 "    BCC     loc_FF810154 \n"
 139 "    B       sub_FF810358_my \n"  // --> Patched. Old value = 0xFF810358.
 140 );
 141 }
 142 
 143 /*************************************************************/
 144 //** sub_FF810358_my @ 0xFF810358 - 0xFF8103C0, length=27
 145 void __attribute__((naked,noinline)) sub_FF810358_my() {
 146 
 147         //http://chdk.setepontos.com/index.php/topic,4194.0.html
 148         *(int*)0x1938=(int)taskHook;
 149         *(int*)0x193C=(int)taskHook;
 150 
 151         // replacement of sub_FF864E00 for correct power-on.
 152         // http://chdk.setepontos.com/index.php?topic=6341.msg76409#msg76409
 153         *(int*)(0x25F4) = (*(int*)0xC0220128)&1 ? 0x200000 : 0x100000;
 154 
 155 asm volatile (
 156 "    LDR     R0, =0xFF8103D0 \n"
 157 "    MOV     R1, #0 \n"
 158 "    LDR     R3, =0xFF810408 \n"
 159 
 160 "loc_FF810364:\n"
 161 "    CMP     R0, R3 \n"
 162 "    LDRCC   R2, [R0], #4 \n"
 163 "    STRCC   R2, [R1], #4 \n"
 164 "    BCC     loc_FF810364 \n"
 165 "    LDR     R0, =0xFF810408 \n"
 166 "    MOV     R1, #0x4B0 \n"
 167 "    LDR     R3, =0xFF81061C \n"
 168 
 169 "loc_FF810380:\n"
 170 "    CMP     R0, R3 \n"
 171 "    LDRCC   R2, [R0], #4 \n"
 172 "    STRCC   R2, [R1], #4 \n"
 173 "    BCC     loc_FF810380 \n"
 174 "    MOV     R0, #0xD2 \n"
 175 "    MSR     CPSR_cxsf, R0 \n"
 176 "    MOV     SP, #0x1000 \n"
 177 "    MOV     R0, #0xD3 \n"
 178 "    MSR     CPSR_cxsf, R0 \n"
 179 "    MOV     SP, #0x1000 \n"
 180 "    LDR     R0, =0x6C4 \n"
 181 "    LDR     R2, =0xEEEEEEEE \n"
 182 "    MOV     R3, #0x1000 \n"
 183 
 184 "loc_FF8103B4:\n"
 185 "    CMP     R0, R3 \n"
 186 "    STRCC   R2, [R0], #4 \n"
 187 "    BCC     loc_FF8103B4 \n"
 188 "    BL      sub_FF8111B0_my \n"  // --> Patched. Old value = 0xFF8111B0.
 189 );
 190 }
 191 
 192 /*************************************************************/
 193 //** sub_FF8111B0_my @ 0xFF8111B0 - 0xFF811248, length=39
 194 void __attribute__((naked,noinline)) sub_FF8111B0_my() {
 195 asm volatile (
 196 "    STR     LR, [SP, #-4]! \n"
 197 "    SUB     SP, SP, #0x74 \n"
 198 "    MOV     R1, #0x74 \n"
 199 "    MOV     R0, SP \n"
 200 "    BL      sub_FFB9C68C \n"
 201 "    MOV     R0, #0x53000 \n"
 202 "    STR     R0, [SP, #4] \n"
 203 
 204 #if defined(CHDK_NOT_IN_CANON_HEAP) // use original heap offset if CHDK is loaded in high memory
 205 "    LDR     R0, =0x1774EC \n"
 206 #else
 207 "    LDR     R0, =new_sa\n"   // otherwise use patched value
 208 "    LDR     R0, [R0]\n"      //
 209 #endif
 210 
 211 "    LDR     R2, =0x371F80 \n"
 212 "    STR     R0, [SP, #8] \n"
 213 "    SUB     R0, R2, R0 \n"
 214 "    STR     R0, [SP, #0xC] \n"
 215 "    MOV     R0, #0x22 \n"
 216 "    STR     R0, [SP, #0x18] \n"
 217 "    MOV     R0, #0x68 \n"
 218 "    STR     R0, [SP, #0x1C] \n"
 219 "    LDR     R1, =0x379C00 \n"
 220 "    LDR     R0, =0x19B \n"
 221 "    STR     R1, [SP] \n"
 222 "    STR     R0, [SP, #0x20] \n"
 223 "    MOV     R0, #0x96 \n"
 224 "    STR     R2, [SP, #0x10] \n"
 225 "    STR     R1, [SP, #0x14] \n"
 226 "    STR     R0, [SP, #0x24] \n"
 227 "    STR     R0, [SP, #0x28] \n"
 228 "    MOV     R0, #0x64 \n"
 229 "    STR     R0, [SP, #0x2C] \n"
 230 "    MOV     R0, #0 \n"
 231 "    STR     R0, [SP, #0x30] \n"
 232 "    STR     R0, [SP, #0x34] \n"
 233 "    MOV     R0, #0x10 \n"
 234 "    STR     R0, [SP, #0x5C] \n"
 235 "    MOV     R0, #0x800 \n"
 236 "    STR     R0, [SP, #0x60] \n"
 237 "    MOV     R0, #0xA0 \n"
 238 "    STR     R0, [SP, #0x64] \n"
 239 "    MOV     R0, #0x280 \n"
 240 "    STR     R0, [SP, #0x68] \n"
 241 "    LDR     R1, =sub_FF815EE0_my \n"  // --> Patched. Old value = 0xFF815EE0.
 242 "    LDR     PC, =0xFF81124C \n"  // Continue in firmware
 243 );
 244 }
 245 
 246 /*************************************************************/
 247 //** sub_FF815EE0_my @ 0xFF815EE0 - 0xFF815F54, length=30
 248 void __attribute__((naked,noinline)) sub_FF815EE0_my() {
 249 asm volatile (
 250 "    STMFD   SP!, {R4,LR} \n"
 251 "    BL      sub_FF810B28 \n"
 252 "    BL      sub_FF81A374 \n"
 253 "    CMP     R0, #0 \n"
 254 "    LDRLT   R0, =0xFF815FF4 /*'dmSetup'*/ \n"
 255 "    BLLT    _err_init_task \n"
 256 "    BL      sub_FF815B18 \n"
 257 "    CMP     R0, #0 \n"
 258 "    LDRLT   R0, =0xFF815FFC /*'termDriverInit'*/ \n"
 259 "    BLLT    _err_init_task \n"
 260 "    LDR     R0, =0xFF81600C /*'/_term'*/ \n"
 261 "    BL      sub_FF815C00 \n"
 262 "    CMP     R0, #0 \n"
 263 "    LDRLT   R0, =0xFF816014 /*'termDeviceCreate'*/ \n"
 264 "    BLLT    _err_init_task \n"
 265 "    LDR     R0, =0xFF81600C /*'/_term'*/ \n"
 266 "    BL      sub_FF813CA8 \n"
 267 "    CMP     R0, #0 \n"
 268 "    LDRLT   R0, =0xFF816028 /*'stdioSetup'*/ \n"
 269 "    BLLT    _err_init_task \n"
 270 "    BL      sub_FF819D00 \n"
 271 "    CMP     R0, #0 \n"
 272 "    LDRLT   R0, =0xFF816034 /*'stdlibSetup'*/ \n"
 273 "    BLLT    _err_init_task \n"
 274 "    BL      sub_FF811690 \n"
 275 "    CMP     R0, #0 \n"
 276 "    LDRLT   R0, =0xFF816040 /*'armlib_setup'*/ \n"
 277 "    BLLT    _err_init_task \n"
 278 "    LDMFD   SP!, {R4,LR} \n"
 279 "    B       taskcreate_Startup_my \n"  // --> Patched. Old value = 0xFF81FCB4.
 280 );
 281 }
 282 
 283 /*************************************************************/
 284 //** taskcreate_Startup_my @ 0xFF81FCB4 - 0xFF81FD60, length=44
 285 void __attribute__((naked,noinline)) taskcreate_Startup_my() {
 286 asm volatile (
 287 "    STMFD   SP!, {R3-R9,LR} \n"
 288 "    MOV     R6, #0 \n"
 289 //"  BL      _sub_FF864DF8 \n"  // --> Nullsub call removed.
 290 "    BL      sub_FF83D9B0 \n"
 291 "    LDR     R9, =0xC0220000 \n"
 292 "    MOVS    R7, R0 \n"
 293 "    MOV     R8, #1 \n"
 294 "    BNE     loc_FF81FD1C \n"
 295 "    BL      sub_FF8372F0 /*_IsNormalCameraMode_FW*/ \n"
 296 "    CMP     R0, #0 \n"
 297 "    BEQ     loc_FF81FD1C \n"
 298 "    LDR     R0, [R9, #0x12C] \n"
 299 "    BIC     R5, R8, R0 \n"
 300 "    LDR     R0, [R9, #0x128] \n"
 301 "    BIC     R4, R8, R0 \n"
 302 "    BL      sub_FF833DDC \n"
 303 "    CMP     R0, #1 \n"
 304 "    MOVEQ   R6, #1 \n"
 305 "    ORR     R0, R4, R5 \n"
 306 "    ORRS    R0, R0, R6 \n"
 307 "    BNE     loc_FF81FD2C \n"
 308 "    BL      sub_FF834190 \n"
 309 "    MOV     R0, #0x44 \n"
 310 "    STR     R0, [R9, #0x1C] \n"
 311 "    BL      sub_FF834380 \n"
 312 
 313 "loc_FF81FD18:\n"
 314 "    B       loc_FF81FD18 \n"
 315 
 316 "loc_FF81FD1C:\n"
 317 "    LDR     R0, [R9, #0x128] \n"
 318 "    BIC     R4, R8, R0 \n"
 319 "    LDR     R0, [R9, #0x12C] \n"
 320 "    BIC     R5, R8, R0 \n"
 321 
 322 "loc_FF81FD2C:\n"
 323 "    MOV     R3, R6 \n"
 324 "    MOV     R2, R7 \n"
 325 "    MOV     R1, R5 \n"
 326 "    MOV     R0, R4 \n"
 327 //"  BL      _sub_FF864E00 \n"  // See begin of sub_FF000364_my()
 328 //"  BL      _sub_FF864DFC \n"  // --> Nullsub call removed.
 329 "    BL      sub_FF83BB7C \n"
 330 "    LDR     R1, =0x3CE000 \n"
 331 "    MOV     R0, #0 \n"
 332 "    BL      sub_FF83BFEC \n"
 333 "    BL      sub_FF83BD94 \n"
 334 "    MOV     R3, #0 \n"
 335 "    STR     R3, [SP] \n"
 336 "    LDR     R3, =task_Startup_my \n"  // --> Patched. Old value = 0xFF81FBF4.
 337 "    LDR     PC, =0xFF81FD64 \n"  // Continue in firmware
 338 );
 339 }
 340 
 341 /*************************************************************/
 342 //** task_Startup_my @ 0xFF81FBF4 - 0xFF81FC4C, length=23
 343 void __attribute__((naked,noinline)) task_Startup_my() {
 344 asm volatile (
 345 "    STMFD   SP!, {R4,LR} \n"
 346 "    BL      sub_FF816588 \n"
 347 "    BL      sub_FF835D30 \n"
 348 "    BL      sub_FF833DEC \n"
 349 //"  BL      _sub_FF86559C \n"  // --> Nullsub call removed.
 350 "    BL      sub_FF83DBE4 \n"
 351 "    BL      sub_FF834F90 \n"
 352 "    BL      sub_FF833870 \n"
 353 //"  BL      _sub_FF83DA8C \n"  // start diskboot.bin
 354 "    BL      sub_FF89AFCC \n"
 355 "    BL      sub_FF816488 \n"
 356 "    BL      sub_FF836A50 \n"
 357 "    LDR     R1, =0x7C007C00 \n"
 358 "    LDR     R0, =0xC0F1800C \n"
 359 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 360 "    LDR     R0, =0xC0F18010 \n"
 361 "    MOV     R1, #0 \n"
 362 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 363 "    LDR     R0, =0xC0F18018 \n"
 364 "    MOV     R1, #0 \n"
 365 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 366 "    LDR     R0, =0xC0F1801C \n"
 367 "    MOV     R1, #0x1000 \n"
 368 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 369 "    LDR     R0, =0xFF81FD90 \n"
 370 "    MOV     R1, #8 \n"
 371 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 372 "    LDR     R0, =0xFF81FD94 \n"
 373 "    MOV     R1, #0xE000000 \n"
 374 "    BL      sub_FF835D3C /*_EngDrvOut*/ \n"
 375 "    BL      sub_FF8164C0 \n"
 376 "    BL      sub_FF832280 \n"
 377 "    BL      sub_FF83DC14 \n"
 378 "    BL      sub_FF83B320 \n"
 379 "    BL      sub_FF83DD94 \n"
 380 
 381 "    BL      CreateTask_spytask\n"  // added
 382 
 383 "    BL      taskcreatePhySw_my \n"  // --> Patched. Old value = 0xFF8349EC.
 384 "    LDR     PC, =0xFF81FC84 \n"  // Continue in firmware
 385 );
 386 }
 387 
 388 /*************************************************************/
 389 //** taskcreatePhySw_my @ 0xFF8349EC - 0xFF834A0C, length=9
 390 void __attribute__((naked,noinline)) taskcreatePhySw_my() {
 391 asm volatile (
 392 "    STMFD   SP!, {R3-R5,LR} \n"
 393 "    LDR     R4, =0x1C3C \n"
 394 "    LDR     R0, [R4, #4] \n"
 395 "    CMP     R0, #0 \n"
 396 "    BNE     sub_FF834A20 \n"
 397 "    MOV     R3, #0 \n"
 398 "    STR     R3, [SP] \n"
 399 "    LDR     R3, =mykbd_task \n"  // --> Patched. Old value = 0xFF8349B8.
 400 "    MOV     R2, #0x2000 \n"  // --> Patched. Old value = 0x800. stack size for new task_PhySw
 401 "    LDR     PC, =0xFF834A10 \n"  // Continue in firmware
 402 );
 403 }
 404 
 405 /*************************************************************/
 406 //** init_file_modules_task @ 0xFF89E66C - 0xFF89E688, length=8
 407 void __attribute__((naked,noinline)) init_file_modules_task() {
 408 asm volatile (
 409 "    STMFD   SP!, {R4-R6,LR} \n"
 410 "    BL      sub_FF89669C \n"
 411 "    LDR     R5, =0x5006 \n"
 412 "    MOVS    R4, R0 \n"
 413 "    MOVNE   R1, #0 \n"
 414 "    MOVNE   R0, R5 \n"
 415 "    BLNE    _PostLogicalEventToUI \n"
 416 "    BL      sub_FF8966C8 \n"
 417 "    BL      core_spytask_can_start\n"  // CHDK: Set "it's-safe-to-start" flag for spytask
 418 "    LDR     PC, =0xFF89E68C \n"  // Continue in firmware
 419 );
 420 }

/* [<][>][^][v][top][bottom][index][help] */