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 // DEBUG: blink led
16 /*
17 #define DP (void*)0xC02200d4 // direct-print (blue)
18 #define GREEN (void*)0xC0220134
19 #define DELAY 5000000
20
21 volatile long *p = (void*)GREEN; // turned off later, so assumed to be power
22 int counter;
23
24 counter = DELAY; *p = 0x46; while (counter--) { asm("nop\n nop\n"); };
25 counter = DELAY; *p = 0x44; while (counter--) { asm("nop\n nop\n"); };
26 */
27 {
28 // char *dst = dst_void;
29 // const char *src = src_void;
30 long *dst = (long*)MEMISOSTART;
31 const long *src = blob_chdk_core;
32 long length = (blob_chdk_core_size + 3) >> 2;
33
34 core_copy(src, dst, length);
35
36 }
37
38 //DEBUG: blink again
39 //counter = DELAY; *p = 0x46; while (counter--) { asm("nop\n nop\n"); };
40 //counter = DELAY; *p = 0x44; while (counter--) { asm("nop\n nop\n"); };
41
42 // resetcode here:
43 asm volatile (
44 "MRS R0, CPSR\n"
45 "BIC R0, R0, #0x3F\n"
46 "ORR R0, R0, #0xD3\n"
47 "MSR CPSR, R0\n"
48 "LDR R1, =0xC0200000\n"
49 "MOV R0, #0xFFFFFFFF\n"
50 "STR R0, [R1,#0x10C]\n"
51 "STR R0, [R1,#0xC]\n"
52 "STR R0, [R1,#0x1C]\n"
53 "STR R0, [R1,#0x2C]\n"
54 "STR R0, [R1,#0x3C]\n"
55 "STR R0, [R1,#0x4C]\n"
56 "STR R0, [R1,#0x5C]\n"
57 "STR R0, [R1,#0x6C]\n"
58 "STR R0, [R1,#0x7C]\n"
59 "STR R0, [R1,#0x8C]\n"
60 "STR R0, [R1,#0x9C]\n"
61 "STR R0, [R1,#0xAC]\n"
62 "STR R0, [R1,#0xBC]\n"
63 "STR R0, [R1,#0xCC]\n"
64 "STR R0, [R1,#0xDC]\n"
65 "STR R0, [R1,#0xEC]\n"
66 "CMP R4, #7\n"
67 "STR R0, [R1,#0xFC]\n"
68 "LDMEQFD SP!, {R4,PC}\n"
69 "MOV R0, #0x78\n"
70 "MCR p15, 0, R0,c1,c0\n"
71 "MOV R0, #0\n"
72 "MCR p15, 0, R0,c7,c10, 4\n"
73 "MCR p15, 0, R0,c7,c5\n"
74 "MCR p15, 0, R0,c7,c6\n"
75 "MOV R0, #0x40000006\n"
76 "MCR p15, 0, R0,c9,c1\n"
77 "MCR p15, 0, R0,c9,c1, 1\n"
78 "MRC p15, 0, R0,c1,c0\n"
79 "ORR R0, R0, #0x50000\n"
80 "MCR p15, 0, R0,c1,c0\n"
81 "LDR R0, =0x12345678\n"
82 "MOV R1, #0x40000000\n"
83 "STR R0, [R1,#0xFFC]\n"
84 //"LDR R0, =0xFF810000\n" // original jump-vector
85 "MOV R0, %0\n" // new jump-vector
86 "LDMFD SP!, {R4,LR}\n"
87 "BX R0\n"
88 : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4");
89
90 while(1);
91 }
92
93 // #define LED_PR 0xC02200CC
94 // #define LED_GREEN 0xc0220134
95 // #define LED_ORANGE 0xc0220130
96 //
97 // static void __attribute__((noreturn)) shutdown()
98 // {
99 // volatile long *p = (void*)LED_PR; // turned off later, so assumed to be power
100 //
101 // asm(
102 // "MRS R1, CPSR\n"
103 // "AND R0, R1, #0x80\n"
104 // "ORR R1, R1, #0x80\n"
105 // "MSR CPSR_cf, R1\n"
106 // :::"r1","r0");
107 //
108 // *p = 0x44; // led off.
109 //
110 // while(1);
111 // }
112 //
113 // static void __attribute__((noreturn)) panic(int cnt)
114 // {
115 // volatile long *p=(void*)LED_PR;
116 // int i;
117 //
118 // for(;cnt>0;cnt--){
119 // p[0]=0x46;
120 //
121 // for(i=0;i<0x200000;i++){
122 // asm ("nop\n");
123 // asm ("nop\n");
124 // }
125 // p[0]=0x44;
126 // for(i=0;i<0x200000;i++){
127 // asm ("nop\n");
128 // asm ("nop\n");
129 // }
130 // }
131 // shutdown();
132 // }