root/platform/ixus125_elph110hs/sub/100d/boot.c

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DEFINITIONS

This source file includes following definitions.
  1. taskHook
  2. CreateTask_spytask
  3. boot
  4. sub_FF00038C_my
  5. sub_FF0011E4_my
  6. sub_FF004284_my
  7. sub_FF00B198_my
  8. taskcreate_Startup_my
  9. task_Startup_my
  10. taskcreatePhySw_my
  11. 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 extern void task_CaptSeq();
  14 extern void task_InitFileModules();
  15 extern void task_MovieRecord();
  16 extern void task_ExpDrv();
  17 extern void task_FileWrite();
  18 
  19 void taskHook(context_t **context)
  20 {
  21     task_t *tcb=(task_t*)((char*)context-offsetof(task_t, context));
  22 
  23     // Replace firmware task addresses with ours
  24     if(tcb->entry == (void*)task_CaptSeq)          tcb->entry = (void*)capt_seq_task;
  25     if(tcb->entry == (void*)task_InitFileModules)  tcb->entry = (void*)init_file_modules_task;
  26     if(tcb->entry == (void*)task_MovieRecord)      tcb->entry = (void*)movie_record_task;
  27     if(tcb->entry == (void*)task_ExpDrv)           tcb->entry = (void*)exp_drv_task;
  28     if(tcb->entry == (void*)task_FileWrite)        tcb->entry = (void*)filewritetask;    
  29 }
  30 
  31 /*----------------------------------------------------------------------
  32     CreateTask_spytask
  33 -----------------------------------------------------------------------*/
  34 void CreateTask_spytask() {
  35     _CreateTask("SpyTask", 0x19, 0x2000, core_spytask, 0);
  36 }
  37 
  38 /*----------------------------------------------------------------------
  39     boot()
  40 
  41     Main entry point for the CHDK code
  42 -----------------------------------------------------------------------*/
  43 
  44 /*************************************************************/
  45 //** boot @ 0xFF00000C - 0xFF000184, length=95
  46 void __attribute__((naked,noinline)) boot() {
  47 asm volatile (
  48 "    LDR     R1, =0xC0410000 \n"
  49 "    MOV     R0, #0 \n"
  50 "    STR     R0, [R1] \n"
  51 "    MOV     R1, #0x78 \n"
  52 "    MCR     p15, 0, R1, c1, c0 \n"
  53 "    MOV     R1, #0 \n"
  54 "    MCR     p15, 0, R1, c7, c10, 4 \n"
  55 "    MCR     p15, 0, R1, c7, c5 \n"
  56 "    MCR     p15, 0, R1, c7, c6 \n"
  57 "    MOV     R0, #0x3D \n"
  58 "    MCR     p15, 0, R0, c6, c0 \n"
  59 "    MOV     R0, #0xC000002F \n"
  60 "    MCR     p15, 0, R0, c6, c1 \n"
  61 "    MOV     R0, #0x37 \n"
  62 "    MCR     p15, 0, R0, c6, c2 \n"
  63 "    MOV     R0, #0x40000037 \n"
  64 "    MCR     p15, 0, R0, c6, c3 \n"
  65 "    MOV     R0, #0x80000017 \n"
  66 "    MCR     p15, 0, R0, c6, c4 \n"
  67 "    LDR     R0, =0xFF00002F \n"
  68 "    MCR     p15, 0, R0, c6, c5 \n"
  69 "    LDR     R0, =0xD000002B \n"
  70 "    MCR     p15, 0, R0, c6, c7 \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, =0x33333330 \n"
  78 "    MCR     p15, 0, R0, c5, c0, 2 \n"
  79 "    LDR     R0, =0x33333330 \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, =0xFF63CD08 \n"
 124 "    LDR     R1, =0x685000 \n"
 125 "    LDR     R3, =0x6946DC \n"
 126 
 127 "loc_FF000144:\n"
 128 "    CMP     R1, R3 \n"
 129 "    LDRCC   R2, [R0], #4 \n"
 130 "    STRCC   R2, [R1], #4 \n"
 131 "    BCC     loc_FF000144 \n"
 132 "    LDR     R0, =0xFF62A9FC \n"
 133 "    LDR     R1, =0x1900 \n"
 134 "    LDR     R3, =0x13C0C \n"
 135 
 136 "loc_FF000160:\n"
 137 "    CMP     R1, R3 \n"
 138 "    LDRCC   R2, [R0], #4 \n"
 139 "    STRCC   R2, [R1], #4 \n"
 140 "    BCC     loc_FF000160 \n"
 141 "    LDR     R1, =0x180998 \n"
 142 "    MOV     R2, #0 \n"
 143 
 144 "loc_FF000178:\n"
 145 "    CMP     R3, R1 \n"
 146 "    STRCC   R2, [R3], #4 \n"
 147 "    BCC     loc_FF000178 \n"
 148 "    B       sub_FF00038C_my \n"  // --> Patched. Old value = 0xFF00038C.
 149 );
 150 }
 151 
 152 /*************************************************************/
 153 //** sub_FF00038C_my @ 0xFF00038C - 0xFF0003F4, length=27
 154 void __attribute__((naked,noinline)) sub_FF00038C_my() {
 155 
 156     //http://chdk.setepontos.com/index.php/topic,4194.0.html
 157     *(int*)0x1938=(int)taskHook;
 158     *(int*)0x193C=(int)taskHook;
 159 
 160     // Replacement of sub_FF01E594 (sub_) for correct power-on.
 161     // (short press = playback mode, long press = record mode)
 162     // look at power-on switch 100d @ 0xff049bf0
 163     *(int*)(0x2580) = (*(int*)0xC022C30C)&1 ? 0x200000 : 0x100000;
 164 
 165 asm volatile (
 166 "    LDR     R0, =0xFF000404 \n"
 167 "    MOV     R1, #0 \n"
 168 "    LDR     R3, =0xFF00043C \n"
 169 
 170 "loc_FF000398:\n"
 171 "    CMP     R0, R3 \n"
 172 "    LDRCC   R2, [R0], #4 \n"
 173 "    STRCC   R2, [R1], #4 \n"
 174 "    BCC     loc_FF000398 \n"
 175 "    LDR     R0, =0xFF00043C \n"
 176 "    MOV     R1, #0x4B0 \n"
 177 "    LDR     R3, =0xFF000650 \n"
 178 
 179 "loc_FF0003B4:\n"
 180 "    CMP     R0, R3 \n"
 181 "    LDRCC   R2, [R0], #4 \n"
 182 "    STRCC   R2, [R1], #4 \n"
 183 "    BCC     loc_FF0003B4 \n"
 184 "    MOV     R0, #0xD2 \n"
 185 "    MSR     CPSR_cxsf, R0 \n"
 186 "    MOV     SP, #0x1000 \n"
 187 "    MOV     R0, #0xD3 \n"
 188 "    MSR     CPSR_cxsf, R0 \n"
 189 "    MOV     SP, #0x1000 \n"
 190 "    LDR     R0, =0x6C4 \n"
 191 "    LDR     R2, =0xEEEEEEEE \n"
 192 "    MOV     R3, #0x1000 \n"
 193 
 194 "loc_FF0003E8:\n"
 195 "    CMP     R0, R3 \n"
 196 "    STRCC   R2, [R0], #4 \n"
 197 "    BCC     loc_FF0003E8 \n"
 198 "    BL      sub_FF0011E4_my \n"  // --> Patched. Old value = 0xFF0011E4.
 199 );
 200 }
 201 
 202 /*************************************************************/
 203 //** sub_FF0011E4_my @ 0xFF0011E4 - 0xFF001290, length=44
 204 void __attribute__((naked,noinline)) sub_FF0011E4_my() {
 205 asm volatile (
 206 "    STR     LR, [SP, #-4]! \n"
 207 "    SUB     SP, SP, #0x74 \n"
 208 "    MOV     R1, #0x74 \n"
 209 "    MOV     R0, SP \n"
 210 "    BL      sub_00690448 \n"
 211 "    MOV     R0, #0x67000 \n"
 212 "    STR     R0, [SP, #4] \n"
 213 
 214 #if defined(CHDK_NOT_IN_CANON_HEAP) // use original heap offset if CHDK is loaded in high memory
 215 "    LDR     R0, =0x180998 \n"
 216 #else
 217 "    LDR     R0, =new_sa\n"   // otherwise use patched value
 218 "    LDR     R0, [R0]\n"      //
 219 #endif
 220 
 221 "    LDR     R2, =0x55D440 \n"
 222 "    STR     R0, [SP, #8] \n"
 223 "    SUB     R0, R2, R0 \n"
 224 "    STR     R0, [SP, #0xC] \n"
 225 "    MOV     R0, #0x22 \n"
 226 "    STR     R0, [SP, #0x18] \n"
 227 "    MOV     R0, #0x7C \n"
 228 "    STR     R0, [SP, #0x1C] \n"
 229 "    LDR     R1, =0x565C00 \n"
 230 "    LDR     R0, =0x1CD \n"
 231 "    STR     R1, [SP] \n"
 232 "    STR     R0, [SP, #0x20] \n"
 233 "    MOV     R0, #0x96 \n"
 234 "    STR     R2, [SP, #0x10] \n"
 235 "    STR     R1, [SP, #0x14] \n"
 236 "    STR     R0, [SP, #0x24] \n"
 237 "    STR     R0, [SP, #0x28] \n"
 238 "    MOV     R0, #0x64 \n"
 239 "    STR     R0, [SP, #0x2C] \n"
 240 "    MOV     R0, #0 \n"
 241 "    STR     R0, [SP, #0x30] \n"
 242 "    STR     R0, [SP, #0x34] \n"
 243 "    MOV     R0, #0x10 \n"
 244 "    STR     R0, [SP, #0x5C] \n"
 245 "    MOV     R0, #0x800 \n"
 246 "    STR     R0, [SP, #0x60] \n"
 247 "    MOV     R0, #0xA0 \n"
 248 "    STR     R0, [SP, #0x64] \n"
 249 "    MOV     R0, #0x280 \n"
 250 "    STR     R0, [SP, #0x68] \n"
 251 "    LDR     R1, =sub_FF004284_my \n"  // --> Patched. Old value = 0xFF004284.
 252 "    LDR     PC, =0xFF001280 \n"  // Continue in firmware
 253 );
 254 }
 255 
 256 /*************************************************************/
 257 //** sub_FF004284_my @ 0xFF004284 - 0xFF0042F8, length=30
 258 void __attribute__((naked,noinline)) sub_FF004284_my() {
 259 asm volatile (
 260 "    STMFD   SP!, {R4,LR} \n"
 261 "    BL      sub_FF000B5C \n"
 262 "    BL      sub_FF0053A8 \n"
 263 "    CMP     R0, #0 \n"
 264 "    LDRLT   R0, =0xFF004398 /*'dmSetup'*/ \n"
 265 "    BLLT    _err_init_task \n"
 266 "    BL      sub_FF003EBC \n"
 267 "    CMP     R0, #0 \n"
 268 "    LDRLT   R0, =0xFF0043A0 /*'termDriverInit'*/ \n"
 269 "    BLLT    _err_init_task \n"
 270 "    LDR     R0, =0xFF0043B0 /*'/_term'*/ \n"
 271 "    BL      sub_FF003FA4 \n"
 272 "    CMP     R0, #0 \n"
 273 "    LDRLT   R0, =0xFF0043B8 /*'termDeviceCreate'*/ \n"
 274 "    BLLT    _err_init_task \n"
 275 "    LDR     R0, =0xFF0043B0 /*'/_term'*/ \n"
 276 "    BL      sub_FF0029C4 \n"
 277 "    CMP     R0, #0 \n"
 278 "    LDRLT   R0, =0xFF0043CC /*'stdioSetup'*/ \n"
 279 "    BLLT    _err_init_task \n"
 280 "    BL      sub_FF004D44 \n"
 281 "    CMP     R0, #0 \n"
 282 "    LDRLT   R0, =0xFF0043D8 /*'stdlibSetup'*/ \n"
 283 "    BLLT    _err_init_task \n"
 284 "    BL      sub_FF0016C4 \n"
 285 "    CMP     R0, #0 \n"
 286 "    LDRLT   R0, =0xFF0043E4 /*'armlib_setup'*/ \n"
 287 "    BLLT    _err_init_task \n"
 288 "    LDMFD   SP!, {R4,LR} \n"
 289 "    B       sub_FF00B198_my \n"  // --> Patched. Old value = 0xFF00B198.
 290 );
 291 }
 292 
 293 /*************************************************************/
 294 //** sub_FF00B198_my @ 0xFF00B198 - 0xFF00B1A8, length=5
 295 void __attribute__((naked,noinline)) sub_FF00B198_my() {
 296 asm volatile (
 297 "    STMFD   SP!, {R4,LR} \n"
 298 //"  BL      _sub_FF049BE8 \n"  // --> Nullsub call removed.
 299 "    BL      taskcreate_Startup_my \n"  // --> Patched. Old value = 0xFF00B1AC.
 300 "    MOV     R0, #0 \n"
 301 "    LDMFD   SP!, {R4,PC} \n"
 302 );
 303 }
 304 
 305 /*************************************************************/
 306 //** taskcreate_Startup_my @ 0xFF00B1AC - 0xFF00B270, length=50
 307 void __attribute__((naked,noinline)) taskcreate_Startup_my() {
 308 asm volatile (
 309 "    STMFD   SP!, {R3-R7,LR} \n"
 310 "    BL      sub_FF025F44 \n"
 311 "    MOVS    R6, R0 \n"
 312 "    BNE     loc_FF00B204 \n"
 313 "    BL      sub_FF01FFE0 /*_IsNormalCameraMode_FW*/ \n"
 314 "    CMP     R0, #0 \n"
 315 "    BEQ     loc_FF00B204 \n"
 316 "    MOV     R0, #0x37 \n"
 317 "    BL      sub_FF024518 \n"
 318 "    RSBS    R5, R0, #1 \n"
 319 "    MOVCC   R5, #0 \n"
 320 "    MOV     R0, #0x36 \n"
 321 "    BL      sub_FF024518 \n"
 322 "    RSBS    R4, R0, #1 \n"
 323 "    MOVCC   R4, #0 \n"
 324 "    ORRS    R0, R4, R5 \n"
 325 "    BNE     loc_FF00B224 \n"
 326 "    BL      sub_FF01DA04 \n"
 327 "    LDR     R1, =0x83DC00 \n"
 328 "    MOV     R0, #0x54 \n"
 329 "    BL      sub_FF024508 \n"
 330 
 331 "loc_FF00B200:\n"
 332 "    B       loc_FF00B200 \n"
 333 
 334 "loc_FF00B204:\n"
 335 "    MOV     R0, #0x36 \n"
 336 "    BL      sub_FF024518 \n"
 337 "    RSBS    R4, R0, #1 \n"
 338 "    MOVCC   R4, #0 \n"
 339 "    MOV     R0, #0x37 \n"
 340 "    BL      sub_FF024518 \n"
 341 "    RSBS    R5, R0, #1 \n"
 342 "    MOVCC   R5, #0 \n"
 343 
 344 "loc_FF00B224:\n"
 345 "    MOV     R3, #0 \n"
 346 "    MOV     R2, R6 \n"
 347 "    MOV     R1, R5 \n"
 348 "    MOV     R0, R4 \n"
 349 //"  BL      _sub_FF049BF0 \n"  // See begin of sub_FF00038C_my. StartUp mode detection.
 350 //"  BL      _sub_FF049BEC \n"  // --> Nullsub call removed.
 351 "    BL      sub_0068C118 \n"
 352 "    LDR     R1, =0x5CE000 \n"
 353 "    MOV     R0, #0 \n"
 354 "    BL      sub_FF024308 \n"
 355 "    BL      sub_0068C330 \n"
 356 "    MOV     R3, #0 \n"
 357 "    STR     R3, [SP] \n"
 358 "    LDR     R3, =task_Startup_my \n"  // --> Patched. Old value = 0xFF00B130.
 359 "    LDR     PC, =0xFF00B25C \n"  // Continue in firmware
 360 );
 361 }
 362 
 363 /*************************************************************/
 364 //** task_Startup_my @ 0xFF00B130 - 0xFF00B188, length=23
 365 void __attribute__((naked,noinline)) task_Startup_my() {
 366 asm volatile (
 367 "    STMFD   SP!, {R4,LR} \n"
 368 "    BL      sub_FF0048C4 \n"
 369 "    BL      sub_FF01F6AC \n"
 370 "    BL      sub_FF01D878 \n"
 371 //"  BL      _sub_FF04A40C \n"  // --> Nullsub call removed.
 372 "    BL      sub_FF026178 \n"
 373 //"  BL      _sub_FF026020 \n"  // start diskboot.bin
 374 "    BL      sub_FF0262E4 \n"
 375 "    BL      sub_FF0264B0 \n"
 376 //"  BL      _sub_FF0262D8 \n"  // --> Nullsub call removed.
 377 "    BL      sub_FF0261A8 \n"
 378 "    BL      sub_FF02423C \n"
 379 "    BL      sub_FF0264B8 \n"
 380 "    BL      CreateTask_spytask\n"  // added
 381 "    BL      taskcreatePhySw_my \n"  // --> Patched. Old value = 0xFF01E438.
 382 "    LDR     PC, =0xFF00B168 \n"  // Continue in firmware
 383 );
 384 }
 385 
 386 /*************************************************************/
 387 //** taskcreatePhySw_my @ 0xFF01E438 - 0xFF01E458, length=9
 388 void __attribute__((naked,noinline)) taskcreatePhySw_my() {
 389 asm volatile (
 390 "    STMFD   SP!, {R3-R5,LR} \n"
 391 "    LDR     R4, =0x1C20 \n"
 392 "    LDR     R0, [R4, #4] \n"
 393 "    CMP     R0, #0 \n"
 394 "    BNE     sub_FF01E46C \n"
 395 "    MOV     R3, #0 \n"
 396 "    STR     R3, [SP] \n"
 397 "    LDR     R3, =mykbd_task \n"  // --> Patched. Old value = 0xFF01E404.
 398 "    MOV     R2, #0x2000 \n"  // --> Patched. Old value = 0x800. stack size for new task_PhySw
 399 "    LDR     PC, =0xFF01E45C \n"  // Continue in firmware
 400 );
 401 }
 402 
 403 /*************************************************************/
 404 //** init_file_modules_task @ 0xFF084030 - 0xFF08404C, length=8
 405 void __attribute__((naked,noinline)) init_file_modules_task() {
 406 asm volatile (
 407 "    STMFD   SP!, {R4-R6,LR} \n"
 408 "    BL      sub_FF07BBBC \n"
 409 "    LDR     R5, =0x5006 \n"
 410 "    MOVS    R4, R0 \n"
 411 "    MOVNE   R1, #0 \n"
 412 "    MOVNE   R0, R5 \n"
 413 "    BLNE    _PostLogicalEventToUI \n"
 414 "    BL      sub_FF07BBE8 \n"
 415 "    BL      core_spytask_can_start\n"  // CHDK: Set "it's-safe-to-start" flag for spytask
 416 "    LDR     PC, =0xFF084050 \n"  // Continue in firmware
 417 );
 418 }

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