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 //DEBUG: blink again
21 // counter = DELAY; *p = 0x46; while (counter--) { asm("nop\n nop\n"); };
22 //counter = DELAY; *p = 0x44; while (counter--) { asm("nop\n nop\n"); };
23
24 // DEBUG: jump to regular firmware-boot (causing a boot loop)
25 //dst_void = (void*) 0xFF810000;
26
27 // resetcode here:
28 asm volatile (
29 "MRS R0, CPSR\n"
30 "BIC R0, R0, #0x3F\n"
31 "ORR R0, R0, #0xD3\n"
32 "MSR CPSR, R0\n"
33 "LDR R1, =0xC0200000\n"
34 "MOV R0, #0xFFFFFFFF\n"
35 "STR R0, [R1,#0x10C]\n"
36 "STR R0, [R1,#0xC]\n"
37 "STR R0, [R1,#0x1C]\n"
38 "STR R0, [R1,#0x2C]\n"
39 "STR R0, [R1,#0x3C]\n"
40 "STR R0, [R1,#0x4C]\n"
41 "STR R0, [R1,#0x5C]\n"
42 "STR R0, [R1,#0x6C]\n"
43 "STR R0, [R1,#0x7C]\n"
44 "STR R0, [R1,#0x8C]\n"
45 "STR R0, [R1,#0x9C]\n"
46 "STR R0, [R1,#0xAC]\n"
47 "STR R0, [R1,#0xBC]\n"
48 "STR R0, [R1,#0xCC]\n"
49 "STR R0, [R1,#0xDC]\n"
50 "STR R0, [R1,#0xEC]\n"
51 "CMP R4, #7\n"
52 "STR R0, [R1,#0xFC]\n"
53 "LDMEQFD SP!, {R4,PC}\n"
54 "MOV R0, #0x78\n"
55 "MCR p15, 0, R0,c1,c0\n"
56 "MOV R0, #0\n"
57 "MCR p15, 0, R0,c7,c10, 4\n"
58 "MCR p15, 0, R0,c7,c5\n"
59 "MCR p15, 0, R0,c7,c6\n"
60 "MOV R0, #0x40000006\n"
61 "MCR p15, 0, R0,c9,c1\n"
62 "MCR p15, 0, R0,c9,c1, 1\n"
63 "MRC p15, 0, R0,c1,c0\n"
64 "ORR R0, R0, #0x50000\n"
65 "MCR p15, 0, R0,c1,c0\n"
66 "LDR R0, =0x12345678\n"
67 "MOV R1, #0x40000000\n"
68 "STR R0, [R1,#0xFFC]\n"
69 //"LDR R0, =0xFF810000\n" // original jump-vector
70 "MOV R0, %0\n" // new jump-vector
71 "LDMFD SP!, {R4,LR}\n"
72 //"BX %0\n"
73 "BX R0\n"
74 : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
75
76 while(1);
77 }
78
79 //#define LED_PR 0xC022006C
80 //
81 //static void __attribute__((noreturn)) shutdown()
82 //{
83 // //volatile long *p = (void*)0xc02200a0; // what does this LED? Power?
84 // volatile long *p = (void*)LED_PR; // turned off later, so assumed to be power
85 //
86 // asm(
87 // "MRS R1, CPSR\n"
88 // "AND R0, R1, #0x80\n"
89 // "ORR R1, R1, #0x80\n"
90 // "MSR CPSR_cf, R1\n"
91 // :::"r1","r0");
92 //
93 // *p = 0x44; // led off.
94 //
95 // while(1);
96 //}
97 //
98 //static void __attribute__((noreturn)) panic(int cnt)
99 //{
100 // volatile long *p=(void*)LED_PR;
101 // int i;
102 //
103 // for(;cnt>0;cnt--){
104 // p[0]=0x46;
105 //
106 // for(i=0;i<0x200000;i++){
107 // asm ("nop\n");
108 // asm ("nop\n");
109 // }
110 // p[0]=0x44;
111 // for(i=0;i<0x200000;i++){
112 // asm ("nop\n");
113 // asm ("nop\n");
114 // }
115 // }
116 // shutdown();
117 //}