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_copy_and_reset;
8 extern long blob_chdk_core_size;
9 // extern long blob_copy_and_reset_size;
10
11
12
13 void __attribute__((noreturn)) my_restart()
14 {
15 {
16 // char *dst = dst_void;
17 // const char *src = src_void;
18 long *dst = (long*)MEMISOSTART;
19 const long *src = blob_chdk_core;
20 long length = (blob_chdk_core_size + 3) >> 2;
21
22 core_copy(src, dst, length);
23
24 }
25
26
27 //DEBUG: blink again
28 //counter = DELAY; *p = 0x46; while (counter--) { asm("nop\n nop\n"); };
29 //counter = DELAY; *p = 0x44; while (counter--) { asm("nop\n nop\n"); };
30
31 // DEBUG: jump to regular firmware-boot (causing a boot loop)
32 //dst_void = (void*) 0xFFC00000;
33
34 // resetcode here:
35 asm volatile (
36 "MRS R0, CPSR\n"
37 "BIC R0, R0, #0x3F\n"
38 "ORR R0, R0, #0xD3\n"
39 "MSR CPSR, R0\n"
40 "LDR R1, =0xC0200000\n"
41 "MOV R0, #0xFFFFFFFF\n"
42 "STR R0, [R1,#0x10C]\n"
43 "STR R0, [R1,#0xC]\n"
44 "STR R0, [R1,#0x1C]\n"
45 "STR R0, [R1,#0x2C]\n"
46 "STR R0, [R1,#0x3C]\n"
47 "STR R0, [R1,#0x4C]\n"
48 "STR R0, [R1,#0x5C]\n"
49 "STR R0, [R1,#0x6C]\n"
50 "STR R0, [R1,#0x7C]\n"
51 "STR R0, [R1,#0x8C]\n"
52 "STR R0, [R1,#0x9C]\n"
53 "STR R0, [R1,#0xAC]\n"
54 "STR R0, [R1,#0xBC]\n"
55 "STR R0, [R1,#0xCC]\n"
56 "STR R0, [R1,#0xDC]\n"
57 "STR R0, [R1,#0xEC]\n"
58 "CMP R4, #7\n"
59 "STR R0, [R1,#0xFC]\n"
60 "LDMEQFD SP!, {R4,PC}\n"
61 "MOV R0, #0x78\n"
62 "MCR p15, 0, R0,c1,c0\n"
63 "MOV R0, #0\n"
64 "MCR p15, 0, R0,c7,c10, 4\n"
65 "MCR p15, 0, R0,c7,c5\n"
66 "MCR p15, 0, R0,c7,c6\n"
67 "MOV R0, #0x40000006\n"
68 "MCR p15, 0, R0,c9,c1\n"
69 "MCR p15, 0, R0,c9,c1, 1\n"
70 "MRC p15, 0, R0,c1,c0\n"
71 "ORR R0, R0, #0x50000\n"
72 "MCR p15, 0, R0,c1,c0\n"
73 "LDR R0, =0x12345678\n"
74 "MOV R1, #0x40000000\n"
75 "STR R0, [R1,#0xFFC]\n"
76 //"LDR R0, =0xFFC00000\n" // original jump-vector
77 "MOV R0, %0\n" // new jump-vector
78 "LDMFD SP!, {R4,LR}\n"
79 //"BX %0\n"
80 "BX R0\n"
81 : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
82 //);
83
84 while(1);
85 }
86
87 //#define LED_PR 0xc0220084
88 // #define LED_PR 0xC02200D4
89 //
90 //
91 // static void __attribute__((noreturn)) shutdown()
92 // {
93 // volatile long *p = (void*)0xc02200a0; // what does this LED? Powe
94 // //volatile long *p = (void*)LED_PR; // turned off later, so assumed to be power
95 //
96 // asm(
97 // "MRS R1, CPSR\n"
98 // "AND R0, R1, #0x80\n"
99 // "ORR R1, R1, #0x80\n"
100 // "MSR CPSR_cf, R1\n"
101 // :::"r1","r0");
102 //
103 // *p = 0x44; // led off.
104 //
105 // }
106 //
107 //
108 // static void __attribute__((noreturn)) panic(int cnt)
109 // {
110 // volatile long *p=(void*)LED_PR;
111 // int i;
112 //
113 // for(;cnt>0;cnt--){
114 // p[0]=0x46;
115 //
116 // for(i=0;i<0x200000;i++){
117 // asm ("nop\n");
118 // asm ("nop\n");
119 // }
120 // p[0]=0x44;
121 // for(i=0;i<0x200000;i++){
122 // asm ("nop\n");
123 // asm ("nop\n");
124 // }
125 // }
126 // shutdown();
127 // }