root/loader/sx30/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 
  20         // resetcode here:
  21         // sx30 100h @FF83C7B8
  22     asm volatile (
  23         "MRS     R0, CPSR\n"
  24         "BIC     R0, R0, #0x3F\n"
  25         "ORR     R0, R0, #0xD3\n"
  26         "MSR     CPSR, R0\n"
  27         "LDR     R1, =0xC0200000\n"
  28         "MVN     R0, #0\n"
  29         "STR     R0, [R1,#0x10C]\n"
  30         "STR     R0, [R1,#0xC]\n"
  31         "STR     R0, [R1,#0x1C]\n"
  32         "STR     R0, [R1,#0x2C]\n"
  33         "STR     R0, [R1,#0x3C]\n"
  34         "STR     R0, [R1,#0x4C]\n"
  35         "STR     R0, [R1,#0x5C]\n"
  36         "STR     R0, [R1,#0x6C]\n"
  37         "STR     R0, [R1,#0x7C]\n"
  38         "STR     R0, [R1,#0x8C]\n"
  39         "STR     R0, [R1,#0x9C]\n"
  40         "STR     R0, [R1,#0xAC]\n"
  41         "STR     R0, [R1,#0xBC]\n"
  42         "STR     R0, [R1,#0xCC]\n"
  43         "STR     R0, [R1,#0xDC]\n"
  44         "STR     R0, [R1,#0xEC]\n"
  45         "CMP     R4, #7\n"
  46         "STR     R0, [R1,#0xFC]\n"
  47         //"LDMEQFD SP!, {R4,PC}\n"
  48         "MOV     R0, #0x78\n"
  49         "MCR     p15, 0, R0,c1,c0\n"
  50         "MOV     R0, #0\n"
  51         "MCR     p15, 0, R0,c7,c10, 4\n"
  52         "MCR     p15, 0, R0,c7,c5\n"
  53         "MCR     p15, 0, R0,c7,c6\n"
  54         "MOV     R0, #0x80000006\n"
  55         "MCR     p15, 0, R0,c9,c1\n"
  56         "MCR     p15, 0, R0,c9,c1, 1\n"
  57         "MRC     p15, 0, R0,c1,c0\n"
  58         "ORR     R0, R0, #0x50000\n"
  59         "MCR     p15, 0, R0,c1,c0\n"
  60         "LDR     R0, =0x12345678\n"
  61         "MOV     R1, #0x80000000\n"
  62         "STR     R0, [R1,#0xFFC]\n"
  63         "MOV     R0, %0\n"         // new jump-vector
  64         "LDMFD   SP!, {R4,LR}\n"
  65         "BX      R0\n"
  66         : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
  67 
  68     while(1);
  69 }
  70 
  71 //#define LED_PR 0xC0220134
  72 //
  73 //static void __attribute__((noreturn)) shutdown()
  74 //{
  75 //    volatile long *p = (void*)LED_PR;       // turned off later, so assumed to be power
  76 //    
  77 //    asm(
  78 //     "MRS     R1, CPSR\n"
  79 //     "AND     R0, R1, #0x80\n"
  80 //     "ORR     R1, R1, #0x80\n"
  81 //     "MSR     CPSR_cf, R1\n"
  82 //     :::"r1","r0");
  83 //    
  84 //    *p = 0x44;  // led off.
  85 //
  86 //    while(1);
  87 //}
  88 //
  89 //static void __attribute__((noreturn)) panic(int cnt)
  90 //{
  91 //      volatile long *p=(void*)LED_PR;
  92 //      int i;
  93 //
  94 //      for(;cnt>0;cnt--){
  95 //              p[0]=0x46;
  96 //
  97 //              for(i=0;i<0x200000;i++){
  98 //                      asm ("nop\n");
  99 //                      asm ("nop\n");
 100 //              }
 101 //              p[0]=0x44;
 102 //              for(i=0;i<0x200000;i++){
 103 //                      asm ("nop\n");
 104 //                      asm ("nop\n");
 105 //              }
 106 //      }
 107 //      shutdown();
 108 //}

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