root/loader/sx240hs/main.c

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DEFINITIONS

This source file includes following definitions.
  1. my_restart

   1 #include "../generic/check_compat.c"
   2 
   3 //static void __attribute__((noreturn)) shutdown();
   4 //static void __attribute__((noreturn)) panic(int cnt);
   5 
   6 extern long *blob_chdk_core;
   7 extern long blob_chdk_core_size;
   8 
   9 void __attribute__((noreturn)) my_restart()
  10 {
  11 
  12         long *dst = (long*)MEMISOSTART;
  13     const long *src = blob_chdk_core;
  14     long length = (blob_chdk_core_size + 3) >> 2;
  15 
  16   core_copy(src, dst, length);
  17 
  18 
  19     //sx240hs @ FF026FBC
  20     asm volatile (
  21         "LDR     R1, =0xC0200000\n"
  22         "MVN     R0, #0\n"
  23         "STR     R0, [R1,#0x10C]\n"
  24         "STR     R0, [R1,#0xC]\n"
  25         "STR     R0, [R1,#0x1C]\n"
  26         "STR     R0, [R1,#0x2C]\n"
  27         "STR     R0, [R1,#0x3C]\n"
  28         "STR     R0, [R1,#0x4C]\n"
  29         "STR     R0, [R1,#0x5C]\n"
  30         "STR     R0, [R1,#0x6C]\n"
  31         "STR     R0, [R1,#0x7C]\n"
  32         "STR     R0, [R1,#0x8C]\n"
  33         "STR     R0, [R1,#0x9C]\n"
  34         "STR     R0, [R1,#0xAC]\n"
  35         "STR     R0, [R1,#0xBC]\n"
  36         "STR     R0, [R1,#0xCC]\n"
  37         "STR     R0, [R1,#0xDC]\n"
  38         "STR     R0, [R1,#0xEC]\n"
  39         "CMP     R4, #7\n"
  40         "STR     R0, [R1,#0xFC]\n"
  41         // "LDMEQFD SP!, {R4,PC}\n"
  42         "MOV     R0, #0x78\n"
  43         "MCR     p15, 0, R0,c1,c0\n"
  44         "MOV     R0, #0\n"
  45         "MCR     p15, 0, R0,c7,c10, 4\n"
  46         "MCR     p15, 0, R0,c7,c5\n"
  47         "MCR     p15, 0, R0,c7,c6\n"
  48         "MOV     R0, #0x80000006\n"
  49         "MCR     p15, 0, R0,c9,c1\n"
  50         "MCR     p15, 0, R0,c9,c1, 1\n"
  51         "MRC     p15, 0, R0,c1,c0\n"
  52         "ORR     R0, R0, #0x50000\n"
  53         "MCR     p15, 0, R0,c1,c0\n"
  54         "LDR     R0, =0x12345678\n"
  55         "MOV     R1, #0x80000000\n"
  56         "STR     R0, [R1,#0xFFC]\n"
  57         "LDMFD   SP!, {R4,LR}\n"
  58         // "MOV     R0, #0xFF000000\n"      //original jump-vector
  59         "MOV     R0, %0\n"                  //new jump-vector
  60         "BX      R0\n"
  61         : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4"
  62     );
  63     while(1);
  64 }
  65 
  66 //#define LED_PR 0xc022c200   // -> In sx260 it will we different for sure ASM1989 08.24.2010 sx230 found at   FF91E080  in sx200 was FF8E73D0
  67 
  68 
  69 //static void __attribute__((noreturn)) shutdown()
  70 //{
  71 //    volatile long *p = (void*)LED_PR;       // turned off later, so assumed to be power
  72 //
  73 //    asm(
  74 //         "MRS     R1, CPSR\n"
  75 //         "AND     R0, R1, #0x80\n"
  76 //         "ORR     R1, R1, #0x80\n"
  77 //         "MSR     CPSR_cf, R1\n"
  78 //         :::"r1","r0");
  79 //
  80 //    *p = 0xCF;                              // led off. instead of 0x44 asm1989 2012 !!! test it
  81 //
  82 //    while(1);
  83 //}
  84 
  85 //static void __attribute__((noreturn)) panic(int cnt)
  86 //{
  87 //    volatile long *p=(void*)LED_PR;
  88 //    int i;
  89 //
  90 //    for(;cnt>0;cnt--){
  91 //        p[0]=0x46;
  92 //
  93 //        for(i=0;i<0x200000;i++){
  94 //            asm ("nop\n");
  95 //            asm ("nop\n");
  96 //        }
  97 //        p[0]=0xCF;                          // led off. instead of 0x44 asm1989 2012 !!! test it
  98 //        for(i=0;i<0x200000;i++){
  99 //            asm ("nop\n");
 100 //            asm ("nop\n");
 101 //        }
 102 //    }
 103 //    shutdown();
 104 //}

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