root/loader/a490/main.c

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

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         {
  13                 long *dst = (long*)MEMISOSTART;
  14                 const long *src = blob_chdk_core;
  15         long length = (blob_chdk_core_size + 3) >> 2;
  16 
  17   core_copy(src, dst, length);
  18 
  19         }
  20 
  21     // ROM:FFC2AAB4 resetcode here:
  22     // search for "0x12345678"
  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, =loc_FFC00000\n"   // -
  65                          "MOV     R0, %0\n"              // new jump-vector
  66                          "LDMFD   SP!, {R4,LR}\n"
  67                          "BX      R0\n"
  68                          : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
  69 
  70         while(1);
  71 }
  72 
  73 //#define LED_PR 0xC0220080 // AF LED
  74 #define LED_PR 0xC0220088 // Green LED
  75 
  76 //static void __attribute__((noreturn)) shutdown()
  77 //{
  78 //    volatile long *p = (void*)LED_PR;       // turned off later, so assumed to be power
  79 //
  80 //    asm(
  81 //         "MRS     R1, CPSR\n"
  82 //         "AND     R0, R1, #0x80\n"
  83 //         "ORR     R1, R1, #0x80\n"
  84 //         "MSR     CPSR_cf, R1\n"
  85 //         :::"r1","r0");
  86 //
  87 //    *p = 0x44;  // led off.
  88 //
  89 //    while(1);
  90 //}
  91 
  92 
  93 //static void __attribute__((noreturn)) panic(int cnt)
  94 //{
  95 //      volatile long *p=(void*)LED_PR;
  96 //      int i;
  97 //
  98 //      for(;cnt>0;cnt--){
  99 //              p[0]=0x46;
 100 //
 101 //              for(i=0;i<0x200000;i++){
 102 //                      asm ("nop\n");
 103 //                      asm ("nop\n");
 104 //              }
 105 //              p[0]=0x44;
 106 //              for(i=0;i<0x200000;i++){
 107 //                      asm ("nop\n");
 108 //                      asm ("nop\n");
 109 //              }
 110 //      }
 111 //      shutdown();
 112 //}

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