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 // int counter;
16
17 //*((long*) 0xFFFFFC) = 0x98765432;
18 //*((long*) 0xFFFFFC) = * ((long*) 0x25e8);
19
20 {
21 // char *dst = dst_void;
22 // const char *src = src_void;
23 long *dst = (long*)MEMISOSTART;
24 const long *src = blob_chdk_core;
25 long length = (blob_chdk_core_size + 3) >> 2;
26
27 core_copy(src, dst, length);
28
29 }
30
31 // DEBUG: jump to regular firmware-boot (causing a boot loop)
32 //dst_void = (void*) 0xFF810000;
33
34 // resetcode here:
35 // s95 100e @FF83C5E8
36 asm volatile (
37 "MRS R0, CPSR\n"
38 "BIC R0, R0, #0x3F\n"
39 "ORR R0, R0, #0xD3\n"
40 "MSR CPSR, R0\n"
41 "LDR R1, =0xC0200000\n"
42 "MOV R0, #0xFFFFFFFF\n"
43 "STR R0, [R1,#0x10C]\n"
44 "STR R0, [R1,#0xC]\n"
45 "STR R0, [R1,#0x1C]\n"
46 "STR R0, [R1,#0x2C]\n"
47 "STR R0, [R1,#0x3C]\n"
48 "STR R0, [R1,#0x4C]\n"
49 "STR R0, [R1,#0x5C]\n"
50 "STR R0, [R1,#0x6C]\n"
51 "STR R0, [R1,#0x7C]\n"
52 "STR R0, [R1,#0x8C]\n"
53 "STR R0, [R1,#0x9C]\n"
54 "STR R0, [R1,#0xAC]\n"
55 "STR R0, [R1,#0xBC]\n"
56 "STR R0, [R1,#0xCC]\n"
57 "STR R0, [R1,#0xDC]\n"
58 "STR R0, [R1,#0xEC]\n"
59 "CMP R4, #7\n"
60 "STR R0, [R1,#0xFC]\n"
61 "LDMEQFD SP!, {R4,PC}\n"
62 "MOV R0, #0x78\n"
63 "MCR p15, 0, R0,c1,c0\n"
64 "MOV R0, #0\n"
65 "MCR p15, 0, R0,c7,c10, 4\n"
66 "MCR p15, 0, R0,c7,c5\n"
67 "MCR p15, 0, R0,c7,c6\n"
68 "MOV R0, #0x80000006\n"
69 "MCR p15, 0, R0,c9,c1\n"
70 "MCR p15, 0, R0,c9,c1, 1\n"
71 "MRC p15, 0, R0,c1,c0\n"
72 "ORR R0, R0, #0x50000\n"
73 "MCR p15, 0, R0,c1,c0\n"
74 "LDR R0, =0x12345678\n"
75 "MOV R1, #0x80000000\n"
76 "STR R0, [R1,#0xFFC]\n"
77
78 //"LDR R0, =0xFF810000\n" // original jump-vector
79 "MOV R0, %0\n" // new jump-vector
80
81 "LDMFD SP!, {R4,LR}\n"
82 "BX R0\n"
83 : : "r"(MEMISOSTART) : "memory","r0","r1","r2","r3","r4"
84 );
85
86 while(1);
87 }
88
89
90 //#define LED_PR 0xC022006C // no power led on s95
91 //
92 // static void __attribute__((noreturn)) shutdown()
93 // {
94 // volatile long *p = (void*) LED_PR;
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 // while(1);
106 // }
107 //
108 //
109 // static void __attribute__((noreturn)) panic(int cnt)
110 // {
111 // volatile long *red=(void*) 0xc0220134; // red led
112 //
113 // int i;
114 //
115 // for(;cnt>0;cnt--){
116 // *red = 0x46;
117 //
118 // for(i=0;i<0x200000;i++){
119 // asm ("nop\n");
120 // asm ("nop\n");
121 // }
122 //
123 // *red = 0x44;
124 //
125 // for(i=0;i<0x200000;i++){
126 // asm ("nop\n");
127 // asm ("nop\n");
128 // }
129 // }
130 // shutdown();
131 // }