root/loader/tx1/main.c

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DEFINITIONS

This source file includes following definitions.
  1. my_restart
  2. shutdown
  3. panic

   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         asm volatile(
  21                         "MRS     R1, CPSR\n"
  22                         "BIC     R1, R1, #0x3F\n"
  23                         "ORR     R1, R1, #0xD3\n"
  24                         "MSR     CPSR_cf, R1\n"
  25 
  26                         "LDR     R2, =0xC0200000\n"
  27                         "MOV     R1, #0xFFFFFFFF\n"
  28                         "STR     R1, [R2,#0x10C]\n"
  29                         "STR     R1, [R2,#0xC]\n"
  30                         "STR     R1, [R2,#0x1C]\n"
  31                         "STR     R1, [R2,#0x2C]\n"
  32                         "STR     R1, [R2,#0x3C]\n"
  33                         "STR     R1, [R2,#0x4C]\n"
  34                         "STR     R1, [R2,#0x5C]\n"
  35                         "STR     R1, [R2,#0x6C]\n"
  36                         "STR     R1, [R2,#0x7C]\n"
  37                         "STR     R1, [R2,#0x8C]\n"
  38                         "STR     R1, [R2,#0x9C]\n"
  39                         "STR     R1, [R2,#0xAC]\n"
  40                         "STR     R1, [R2,#0xBC]\n"
  41                         "STR     R1, [R2,#0xCC]\n"
  42                         "STR     R1, [R2,#0xDC]\n"
  43                         "STR     R1, [R2,#0xEC]\n"
  44                         "STR     R1, [R2,#0xFC]\n"
  45 
  46                         //#if 0
  47                         "MOV     R1, #0x78\n"
  48                         "MCR     p15, 0, R1,c1,c0\n"
  49                         "MOV     R1, #0\n"
  50                         "MCR     p15, 0, R1,c7,c10, 4\n"
  51                         "MCR     p15, 0, R1,c7,c5\n"
  52                         "MCR     p15, 0, R1,c7,c6\n"
  53                         "MOV     R2, #0x40000000\n"
  54                         "ORR     R1, R2, #6\n"
  55                         "MCR     p15, 0, R1,c9,c1\n"
  56                         "ORR     R1, R1, #6\n"
  57                         "MCR     p15, 0, R1,c9,c1, 1\n"
  58                         "MRC     p15, 0, R1,c1,c0\n"
  59                         "ORR     R1, R1, #0x50000\n"
  60                         "MCR     p15, 0, R1,c1,c0\n"
  61 
  62                         "LDR     R2, =0x12345678\n"
  63                         "MOV     R3, #0xFF0\n"
  64                         "ADD     R3, R3, #0x4000000C\n"
  65                         "STR     R2, [R3]\n"
  66                         //#endif
  67 
  68                         "MOV     SP, #0x1900\n"
  69                         "MOV     LR, PC\n"
  70                         "MOV     PC, %0\n"
  71                         : : "r"(MEMISOSTART) : "memory","r1","r2","r3");
  72 
  73         while(1);
  74 }
  75 
  76 #define LED_PR 0xc02200DC
  77 
  78 static void __attribute__((noreturn)) shutdown()
  79 {
  80     volatile long *p = (void*)0xc02200a0;
  81         
  82     asm(
  83          "MRS     R1, CPSR\n"
  84          "AND     R0, R1, #0x80\n"
  85          "ORR     R1, R1, #0x80\n"
  86          "MSR     CPSR_cf, R1\n"
  87          :::"r1","r0");
  88         
  89   //  *p = 0x44;
  90 
  91     while(1);
  92 }
  93 
  94 
  95 static void __attribute__((noreturn)) panic(int cnt)
  96 {
  97         volatile long *p=(void*)LED_PR;
  98         int i;
  99 
 100         for(;cnt>0;cnt--){
 101         //      p[0]=0x46;
 102 
 103                 for(i=0;i<0x200000;i++){
 104                         asm ("nop\n");
 105                         asm ("nop\n");
 106                 }
 107         //      p[0]=0x44;
 108                 for(i=0;i<0x200000;i++){
 109                         asm ("nop\n");
 110                         asm ("nop\n");
 111                 }
 112         }
 113         shutdown();
 114 }

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