1 #include "../generic/check_compat.c"
2
3 // for DEBUG
4 /*
5 #define LED_AF 0xc0220080
6 #define LED_PR 0xc0220084
7 #define LED_RED 0xc0220088
8
9 void port_on(int port)
10 {
11 volatile long *p=(void*)port;
12 *p=0x46;
13 }
14
15 void port_off(int port)
16 {
17 volatile long *p=(void*)port;
18 *p=0x44;
19 }
20 */
21
22 // static void __attribute__((noreturn)) shutdown();
23 // static void __attribute__((noreturn)) panic(int cnt);
24
25 extern long *blob_chdk_core;
26 // extern long *blob_copy_and_reset;
27 extern long blob_chdk_core_size;
28 // extern long blob_copy_and_reset_size;
29
30
31
32 void __attribute__((noreturn)) my_restart()
33 {
34 {
35 // char *dst = dst_void;
36 // const char *src = src_void;
37 long *dst = (long*)MEMISOSTART;
38 const long *src = blob_chdk_core;
39 long length = (blob_chdk_core_size + 3) >> 2;
40
41 core_copy(src, dst, length);
42
43 }
44
45 asm volatile(
46 "MRS R1, CPSR\n"
47 "BIC R1, R1, #0x3F\n"
48 "ORR R1, R1, #0xD3\n"
49 "MSR CPSR_cf, R1\n"
50
51 "LDR R2, =0xC0200000\n"
52 "MOV R1, #0xFFFFFFFF\n"
53 "STR R1, [R2,#0x10C]\n"
54 "STR R1, [R2,#0xC]\n"
55 "STR R1, [R2,#0x1C]\n"
56 "STR R1, [R2,#0x2C]\n"
57 "STR R1, [R2,#0x3C]\n"
58 "STR R1, [R2,#0x4C]\n"
59 "STR R1, [R2,#0x5C]\n"
60 "STR R1, [R2,#0x6C]\n"
61 "STR R1, [R2,#0x7C]\n"
62 "STR R1, [R2,#0x8C]\n"
63 "STR R1, [R2,#0x9C]\n"
64 "STR R1, [R2,#0xAC]\n"
65 "STR R1, [R2,#0xBC]\n"
66 "STR R1, [R2,#0xCC]\n"
67 "STR R1, [R2,#0xDC]\n"
68 "STR R1, [R2,#0xEC]\n"
69 "STR R1, [R2,#0xFC]\n"
70
71 "MOV R1, #0x78\n"
72 "MCR p15, 0, R1,c1,c0\n"
73 "MOV R1, #0\n"
74 "MCR p15, 0, R1,c7,c10, 4\n"
75 "MCR p15, 0, R1,c7,c5\n"
76 "MCR p15, 0, R1,c7,c6\n"
77 "MOV R2, #0x40000000\n"
78 "ORR R1, R2, #6\n"
79 "MCR p15, 0, R1,c9,c1\n"
80 "ORR R1, R1, #6\n"
81 "MCR p15, 0, R1,c9,c1, 1\n"
82 "MRC p15, 0, R1,c1,c0\n"
83 "ORR R1, R1, #0x50000\n"
84 "MCR p15, 0, R1,c1,c0\n"
85
86 "MOV R3, #0xFF0\n"
87 "LDR R1, =0x12345678\n"
88 "ADD R3, R3, #0x4000000C\n"
89 "STR R1, [R3]\n"
90
91 "MOV SP, #0x1900\n"
92 "MOV LR, PC\n"
93 "MOV PC, %0\n"
94 : : "r"(MEMISOSTART) : "memory","r1","r2","r3");
95
96 while(1);
97 }
98
99
100 // static void __attribute__((noreturn)) shutdown()
101 // {
102 // volatile long *p = (void*)0xc02200a0;
103 //
104 // asm(
105 // "MRS R1, CPSR\n"
106 // "AND R0, R1, #0x80\n"
107 // "ORR R1, R1, #0x80\n"
108 // "MSR CPSR_cf, R1\n"
109 // :::"r1","r0");
110 //
111 // *p = 0x44;
112 //
113 // while(1);
114 // }
115 //
116 //
117 // static void __attribute__((noreturn)) panic(int cnt)
118 // {
119 // int i;
120 //
121 // for(;cnt>0;cnt--){
122 //
123 // port_on(LED_PR);
124 //
125 // for(i=0;i<0x200000;i++){
126 // asm ("nop\n");
127 // asm ("nop\n");
128 // }
129 //
130 // port_off(LED_PR);
131 //
132 // for(i=0;i<0x200000;i++){
133 // asm ("nop\n");
134 // asm ("nop\n");
135 // }
136 // }
137 // shutdown();
138 // }