root/loader/a720/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 
  10 
  11 void __attribute__((noreturn)) my_restart() 
  12 {
  13     {
  14         long *dst = (long*)MEMISOSTART;
  15         const long *src = blob_chdk_core;
  16         long length = (blob_chdk_core_size + 3) >> 2;
  17 
  18   core_copy(src, dst, length);
  19 
  20     }
  21     
  22     // resetcode here:
  23     asm volatile (
  24         "MRS     R0, CPSR\n"
  25         "BIC     R0, R0, #0x3F\n"
  26         "ORR     R0, R0, #0xD3\n"
  27         "MSR     CPSR, R0\n"
  28         "LDR     R1, =0xC0200000\n"
  29         "MOV     R0, #0xFFFFFFFF\n"
  30         "STR     R0, [R1,#0x10C]\n"
  31         "STR     R0, [R1,#0xC]\n"
  32         "STR     R0, [R1,#0x1C]\n"
  33         "STR     R0, [R1,#0x2C]\n"
  34         "STR     R0, [R1,#0x3C]\n"
  35         "STR     R0, [R1,#0x4C]\n"
  36         "STR     R0, [R1,#0x5C]\n"
  37         "STR     R0, [R1,#0x6C]\n"
  38         "STR     R0, [R1,#0x7C]\n"
  39         "STR     R0, [R1,#0x8C]\n"
  40         "STR     R0, [R1,#0x9C]\n"
  41         "STR     R0, [R1,#0xAC]\n"
  42         "STR     R0, [R1,#0xBC]\n"
  43         "STR     R0, [R1,#0xCC]\n"
  44         "STR     R0, [R1,#0xDC]\n"
  45         "STR     R0, [R1,#0xEC]\n"
  46         "CMP     R4, #7\n"
  47         "STR     R0, [R1,#0xFC]\n"
  48         "LDMEQFD SP!, {R4,PC}\n"
  49         "MOV     R0, #0x78\n"
  50         "MCR     p15, 0, R0,c1,c0\n"
  51         "MOV     R0, #0\n"
  52         "MCR     p15, 0, R0,c7,c10, 4\n"
  53         "MCR     p15, 0, R0,c7,c5\n"
  54         "MCR     p15, 0, R0,c7,c6\n"
  55         "MOV     R0, #0x40000006\n"
  56         "MCR     p15, 0, R0,c9,c1\n"
  57         "MCR     p15, 0, R0,c9,c1, 1\n"
  58         "MRC     p15, 0, R0,c1,c0\n"
  59         "ORR     R0, R0, #0x50000\n"
  60         "MCR     p15, 0, R0,c1,c0\n"
  61         "LDR     R0, =0x12345678\n"
  62         "MOV     R1, #0x40000000\n"
  63         "STR     R0, [R1,#0xFFC]\n"
  64         //"LDR     R0, =0xFFC00000\n"   // original jump-vector
  65         "MOV     R0, %0\n"              // new jump-vector
  66         "LDMFD   SP!, {R4,LR}\n"
  67         //"BX        %0\n"
  68         "BX      R0\n"
  69          : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
  70         //);
  71 
  72     while(1);
  73 }
  74 
  75 //#define LED_PR 0xc0220084
  76 //#define LED_PR 0xC02200D4
  77 
  78 
  79 //static void __attribute__((noreturn)) shutdown()
  80 //{
  81 //    //volatile long *p = (void*)0xc02200a0;       // what does this LED? Powe
  82 //    volatile long *p = (void*)LED_PR;       // turned off later, so assumed to be power
  83 
  84 //    asm(
  85 //         "MRS     R1, CPSR\n"
  86 //         "AND     R0, R1, #0x80\n"
  87 //         "ORR     R1, R1, #0x80\n"
  88 //         "MSR     CPSR_cf, R1\n"
  89 //         :::"r1","r0");
  90         
  91 //    *p = 0x44;  // led off.
  92 
  93 //    while(1);
  94 //}
  95 
  96 
  97 //static void __attribute__((noreturn)) panic(int cnt)
  98 //{
  99 //      volatile long *p=(void*)LED_PR;
 100 //      int i;
 101 
 102 //      for(;cnt>0;cnt--){
 103 //              p[0]=0x46;
 104 
 105 //              for(i=0;i<0x200000;i++){
 106 //                      asm ("nop\n");
 107 //                      asm ("nop\n");
 108 //              }
 109 //              p[0]=0x44;
 110 //              for(i=0;i<0x200000;i++){
 111 //                      asm ("nop\n");
 112 //                      asm ("nop\n");
 113 //              }
 114 //      }
 115 //      shutdown();
 116 //}

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