More info, from disassembled image, abort occurs in enter_kernel at 9e4:
000009e0 <__enter_kernel>:
9e0: e3a00000 mov r0, #0 ; 0x0
9e4: e1a0f004 mov pc, r4
On Tuesday, February 21, 2017 at 12:14:10 PM UTC-7, acheesehead wrote:
>
> Using JTAG to trace the problem, I found that the code aborts at
> 0x820009e4, after eventually running a bunch of code in the 0xc0000000 area
> of memory. The DM3730 TRM shows this region as reserved, so I am a bit
> confused as to what could be there. Any suggestions on how to debug this?
>
> Addresses relative to 0x82000000
> 9b0: e320f000 nop {0}
> 9b4: e320f000 nop {0}
> 9b8: e320f000 nop {0}
> 9bc: e320f000 nop {0}
> 9c0: eafffffe b 9c0 <_binary_zImage_start+0x9c0>
> 9c4: eafffffe b 9c4 <_binary_zImage_start+0x9c4>
> 9c8: eafffffe b 9c8 <_binary_zImage_start+0x9c8>
> 9cc: eafffffe b 9cc <_binary_zImage_start+0x9cc>
> 9d0: eafffffe b 9d0 <_binary_zImage_start+0x9d0>
> 9d4: ea000001 b 9e0 <_binary_zImage_start+0x9e0>
> 9d8: eafffffe b 9d8 <_binary_zImage_start+0x9d8>
> 9dc: eafffffe b 9dc <_binary_zImage_start+0x9dc>
> 9e0: e3a00000 mov r0, #0
> 9e4: e1a0f004 mov pc, r4 jumps to 80008000, eventually gets to
> 8000805C, then 80101878, then 800080B8
> then 80008078 branches to 8012028C, then 8011f6a4, then 8011f69c,
> then C149728C
>
> Regs after crash, the link register shows C0D6F77C:
> PC: (R15) = FFFF000C, CPSR = A00001D7 (ABORT mode, ARM FIQ dis. IRQ dis.)
> Current:
> R0 =D2FFB254, R1 =00005B4C, R2 =0001420C, R3 =00014254
> R4 =D2FFB254, R5 =CFFE7000, R6 =00005B3C, R7 =0000000B
> R8 =FFFF0014, R9 =FFFF0014, R10=00000000, R11=C127A4E8, R12=CFFECB84
> R13=C1601DFC, R14=C1601E00, SPSR=C176218C
> USR: R8 =00000000, R9 =C127A4E8, R10=CFFECB84, R11=C1601DFC, R12=C1601E00
> R13=00000000, R14=00000000
> FIQ: R8 =756FDFF6, R9 =6FFFF5F6, R10=F57DEBFF, R11=7FE73FFF, R12=78C3DFF7
> R13=C17621A4, R14=C17621A4, SPSR=00000000
> IRQ: R13=C1762180, R14=C1762180, SPSR=80000173
> SVC: R13=C1601DF0, R14=C0D6F77C, SPSR=600001D3
> ABT: R13=C176218C, R14=FFFF0010, SPSR=A00001D7
> UND: R13=C1762198, R14=C1762198, SPSR=00000000
>
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