AXD调试BLOB

AXD调试BLOB

今天终于又有所进步 ，把AXD连上板子后，烧了一个没有源代码但是可以正常工作的BIN文件。

设置一个断点地址在0X0处，就可以看见汇编代码了，终于初始化的所有设置都一清二楚了，不过

我改了一下主频后（直接修改二进制文件），不能正常工作，不知道原因，反正肯定是影响到其他地方了。

然后一步一步的跟踪代码，发现在FLASH中调试只能设两个断点，否则就没用了（直接跑飞到RAM去了）。

希望通过模仿这个BOOTLOADER，自己的BOOTLADER早日诞生。

可以参考下面的汇编代码来设置特殊寄存器了。

[0xea000007] * b        0x24
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc00000c
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc000010
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc000014
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc000018
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc00001c
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc000020
[0xe28ff303]   add      pc,pc,#0xc000000 ; #0xc000024
[0x0c200400]   stceq    p4,c0,[r0],#-0
[0xe59f0228]   ldr      r0,0x00000254 ; = #0x01d30000
[0xe3a01000]   mov      r1,#0
[0xe5801000]   str      r1,[r0,#0]
[0xe3a00507]   mov      r0,#0x1c00000
[0xe3a0100e]   mov      r1,#0xe
[0xe5801000]   str      r1,[r0,#0]
[0xe59f0214]   ldr      r0,0x00000258 ; = #0x01c00004
[0xe3a01103]   mov      r1,#0xc0000000
[0xe5801000]   str      r1,[r0,#0]
[0xe59f120c]   ldr      r1,0x0000025c ; = #0x01d20000
[0xe59f020c]   ldr      r0,0x00000260 ; = #0x000003ff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f1208]   ldr      r1,0x00000264 ; = #0x01d20004
[0xe59f0200]   ldr      r0,0x00000260 ; = #0x000003ff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f1200]   ldr      r1,0x00000268 ; = #0x01d20008
[0xe59f0200]   ldr      r0,0x0000026c ; = #0x000007cf
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11fc]   ldr      r1,0x00000270 ; = #0x01d2000c
[0xe59f01fc]   ldr      r0,0x00000274 ; = #0x000007ff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11f8]   ldr      r1,0x00000278 ; = #0x01d20010
[0xe59f01f8]   ldr      r0,0x0000027c ; = #0x5f55ffff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11f4]   ldr      r1,0x00000280 ; = #0x01d20014
[0xe59f01f4]   ldr      r0,0x00000284 ; = #0x00007fff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11f0]   ldr      r1,0x00000288 ; = #0x01d20018
[0xe3a00a03]   mov      r0,#0x3000
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11e8]   ldr      r1,0x0000028c ; = #0x01d2001c
[0xe59f01e8]   ldr      r0,0x00000290 ; = #0x0000aaaa
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11e4]   ldr      r1,0x00000294 ; = #0x01d20024
[0xe3a00000]   mov      r0,#0
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11dc]   ldr      r1,0x00000298 ; = #0x01d20028
[0xe59f01dc]   ldr      r0,0x0000029c ; = #0x0002aaa8
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11d8]   ldr      r1,0x000002a0 ; = #0x01d2002c
[0xe59f01d8]   ldr      r0,0x000002a4 ; = #0x000001ff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11d4]   ldr      r1,0x000002a8 ; = #0x01d20030
[0xe59f01d4]   ldr      r0,0x000002ac ; = #0x00000106
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11d0]   ldr      r1,0x000002b0 ; = #0x01d20034
[0xe59f01d0]   ldr      r0,0x000002b4 ; = #0x001b2c1a
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11cc]   ldr      r1,0x000002b8 ; = #0x01d20038
[0xe59f01cc]   ldr      r0,0x000002bc ; = #0x000001fb
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11c8]   ldr      r1,0x000002c0 ; = #0x01d2003c
[0xe3a00003]   mov      r0,#3
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11c0]   ldr      r1,0x000002c4 ; = #0x01d20040
[0xe59f01c0]   ldr      r0,0x000002c8 ; = #0x0000ffff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11bc]   ldr      r1,0x000002cc ; = #0x01d20048
[0xe3a00000]   mov      r0,#0
[0xe5810000]   str      r0,[r1,#0]
[0xe3a0140a]   mov      r1,#0xa000000
[0xe3a000ff]   mov      r0,#0xff
[0xe5810000]   str      r0,[r1,#0]
[0xe59f11a8]   ldr      r1,0x000002d0 ; = #0x01d2004c
[0xe3a00007]   mov      r0,#7
[0xe5c10000]   strb     r0,[r1,#0]
[0xe59f11a0]   ldr      r1,0x000002d4 ; = #0x01d20050
[0xe3a00040]   mov      r0,#0x40
[0xe5810000]   str      r0,[r1,#0]
[0xe59f1198]   ldr      r1,0x000002d8 ; = #0x01e0000c
[0xe59f0198]   ldr      r0,0x000002dc ; = #0x03fffeff
[0xe5810000]   str      r0,[r1,#0]
[0xe3a0161e]   mov      r1,#0x1e00000
[0xe3a00005]   mov      r0,#5
[0xe5810000]   str      r0,[r1,#0]
[0xe59f1188]   ldr      r1,0x000002e0 ; = #0x01d8000c
[0xe3a00e32]   mov      r0,#0x320
[0xe5c10000]   strb     r0,[r1,#0]
[0xe3a01776]   mov      r1,#0x1d80000
[0xe59f017c]   ldr      r0,0x000002e4 ; = #0x00052021
[0xe5810000]   str      r0,[r1,#0]
[0xe59f1178]   ldr      r1,0x000002e8 ; = #0x01d80004
[0xe59f0178]   ldr      r0,0x000002ec ; = #0x00007ff8
[0xe5810000]   str      r0,[r1,#0]
[0xeb000088]   bl       0x39c
[0xe24f0d06]   sub      r0,pc,#0x180 ; #0
[0xe2802801]   add      r2,r0,#0x10000
[0xe2800b01]   add      r0,r0,#0x400
[0xe51f116c]   ldr      r1,0x00000020 ; = #0x0c200400
[0xe8b007f8]   ldmia    r0!,{r3-r10}
[0xe8a107f8]   stmia    r1!,{r3-r10}
[0xe1500002]   cmp      r0,r2
[0xdafffffb]   ble      0x188
[0xe28f0020]   add      r0,pc,#0x20 ; #0x1c0
[0xe2802b01]   add      r2,r0,#0x400
[0xe3a01303]   mov      r1,#0xc000000
[0xe2811008]   add      r1,r1,#8
[0xe8b007f8]   ldmia    r0!,{r3-r10}
[0xe8a107f8]   stmia    r1!,{r3-r10}
[0xe1500002]   cmp      r0,r2
[0xdafffffb]   ble      0x1a8
[0xe51f01a0]   ldr      r0,0x00000020 ; = #0x0c200400
[0xe1a0f000]   mov      pc,r0
[0xeaffff97]   b        0x24
[0xea000005]   b        0x1e0
[0xea000006]   b        0x1e8
[0xea000007]   b        0x1f0
[0xea000008]   b        0x1f8
[0xea000009]   b        0x200
[0xea00000a]   b        0x208
[0xea000014]   b        0x234
[0xe3a06003]   mov      r6,#3
[0xea000014]   b        0x23c
[0xe3a06004]   mov      r6,#4
[0xea000012]   b        0x23c
[0xe3a06005]   mov      r6,#5
[0xea000010]   b        0x23c
[0xe3a06006]   mov      r6,#6
[0xea00000e]   b        0x23c
[0xe3a06007]   mov      r6,#7
[0xea00000c]   b        0x23c
[0xe59fd0e0]   ldr      r13,0x000002f0 ; = #0x0c200524
[0xe92d0003]   stmfd    r13!,{r0,r1}
[0xe59f00dc]   ldr      r0,0x000002f4 ; = #0x01e00024
[0xe3a01c01]   mov      r1,#0x100
[0xe5801000]   str      r1,[r0,#0]
[0xe59f00d4]   ldr      r0,0x000002f8 ; = #0x0c200494
[0xe5901000]   ldr      r1,[r0,#0]
[0xe2811001]   add      r1,r1,#1
[0xe5801000]   str      r1,[r0,#0]
[0xe8bd0003]   ldmfd    r13!,{r0,r1}
[0xe25ef004]   subs     pc,r14,#4
[0xe3a06009]   mov      r6,#9
[0xeaffffff]   b        0x23c
[0xe3a05502]   mov      r5,#0x800000
[0xe2555001]   subs     r5,r5,#1
[0x1afffffd]   bne      0x240
[0xe1a00006]   mov      r0,r6
[0xeb00003a]   bl       0x33c
[0xeafffff9]   b        0x23c
[0x01d30000]   biceqs   r0,r3,r0
[0x01c00004]   biceq    r0,r0,r4
[0x01d20000]   biceqs   r0,r2,r0
[0x000003ff]   streqd   r0,[r0],-pc
[0x01d20004]   biceqs   r0,r2,r4
[0x01d20008]   biceqs   r0,r2,r8
[0x000007cf]   andeq    r0,r0,pc,asr #15
[0x01d2000c]   biceqs   r0,r2,r12
[0x000007ff]   streqd   r0,[r0],-pc
[0x01d20010]   biceqs   r0,r2,r0,lsl r0
[0x5f55ffff]   swipl    0x55ffff
[0x01d20014]   biceqs   r0,r2,r4,lsl r0
[0x00007fff]   streqd   r7,[r0],-pc
[0x01d20018]   biceqs   r0,r2,r8,lsl r0
[0x01d2001c]   biceqs   r0,r2,r12,lsl r0
[0x0000aaaa]   andeq    r10,r0,r10,lsr #21
[0x01d20024]   biceqs   r0,r2,r4,lsr #32
[0x01d20028]   biceqs   r0,r2,r8,lsr #32
[0x0002aaa8]   andeq    r10,r2,r8,lsr #21
[0x01d2002c]   biceqs   r0,r2,r12,lsr #32
[0x000001ff]   streqd   r0,[r0],-pc
[0x01d20030]   biceqs   r0,r2,r0,lsr r0
[0x00000106]   andeq    r0,r0,r6,lsl #2
[0x01d20034]   biceqs   r0,r2,r4,lsr r0
[0x001b2c1a]   andeqs   r2,r11,r10,lsl r12
[0x01d20038]   biceqs   r0,r2,r8,lsr r0
[0x000001fb]   streqd   r0,[r0],-r11
[0x01d2003c]   biceqs   r0,r2,r12,lsr r0
[0x01d20040]   biceqs   r0,r2,r0,asr #32
[0x0000ffff]   streqd   pc,[r0],-pc
[0x01d20048]   biceqs   r0,r2,r8,asr #32
[0x01d2004c]   biceqs   r0,r2,r12,asr #32
[0x01d20050]   biceqs   r0,r2,r0,asr r0
[0x01e0000c]   mvneq    r0,r12
[0x03fffeff]   mvneqs   pc,#0xff0 ; ? rn = 0xf
[0x01d8000c]   biceqs   r0,r8,r12
[0x00052021]   andeq    r2,r5,r1,lsr #32
[0x01d80004]   biceqs   r0,r8,r4
[0x00007ff8]   streqd   r7,[r0],-r8
[0x0c200524]   stceq    p5,c0,[r0],#-0x90
[0x01e00024]   mvneq    r0,r4,lsr #32
[0x0c200494]   stceq    p4,c0,[r0],#-0x250
[0xe1a0f00e]   mov      pc,r14
[0xe59f005c]   ldr      r0,0x00000364 ; = #0x01d2000c
[0xe5901000]   ldr      r1,[r0,#0]
[0xe3c11c02]   bic      r1,r1,#0x200
[0xe5801000]   str      r1,[r0,#0]
[0xe1a0f00e]   mov      pc,r14
[0xe1a0f00e]   mov      pc,r14
[0xe59f0044]   ldr      r0,0x00000364 ; = #0x01d2000c
[0xe5901000]   ldr      r1,[r0,#0]
[0xe3811c02]   orr      r1,r1,#0x200
[0xe5801000]   str      r1,[r0,#0]
[0xe1a0f00e]   mov      pc,r14
[0xe3a00501]   mov      r0,#0x400000
[0xe2500001]   subs     r0,r0,#1
[0x1afffffd]   bne      0x330
[0xe1a0f00e]   mov      pc,r14
[0xe1a0f00e]   mov      pc,r14
[0xe1a0400e]   mov      r4,r14
[0xe1a03000]   mov      r3,r0
[0xebfffff1]   bl       0x314
[0xebfffff6]   bl       0x32c
[0xebffffe9]   bl       0x2fc
[0xebfffff4]   bl       0x32c
[0xe2533001]   subs     r3,r3,#1
[0x1afffff9]   bne      0x348
[0xe1a0f004]   mov      pc,r4
[0x01d2000c]   biceqs   r0,r2,r12
[0x11110002]   tstne    r1,r2
[0x00000600]   andeq    r0,r0,r0,lsl #12
[0x00007ffc]   streqd   r7,[r0],-r12
[0x00007ffc]   streqd   r7,[r0],-r12
[0x00007ffc]   streqd   r7,[r0],-r12
[0x00007ffc]   streqd   r7,[r0],-r12
[0x00007ffc]   streqd   r7,[r0],-r12
[0x00018000]   andeq    r8,r1,r0
[0x00018000]   andeq    r8,r1,r0
[0x00960591]   umulleqs r0,r6,r1,r5
[0x00000010]   andeq    r0,r0,r0,lsl r0
[0x00000020]   andeq    r0,r0,r0,lsr #32
[0x00000020]   andeq    r0,r0,r0,lsr #32
[0xe59f000c]   ldr      r0,0x000003b0 ; = #0x00000368
[0xe8903ffe]   ldmia    r0,{r1-r13}
[0xe3a00772]   mov      r0,#0x1c80000
[0xe8803ffe]   stmia    r0,{r1-r13}
[0xe1a0f00e]   mov      pc,r14
[0x00000368]   andeq    r0,r0,r8,ror #6
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0
[0x00000000]   andeq    r0,r0,r0