Hello,
I am using the Cirrus Logic 7500FE Devlopment Board, which has ANGEL
Debugger running. I have used GDB 5.0 for loading the Linux Kernel Image
into the DRAM on my Board.
I have configured GDB 5.0 using the command:
configure --target=arm-elf THEN make THEN make install
(it did not require any changes in any Makefile)
Then while compiling the kernel, I have changed the base address
to 0x00008000 as the Board maps DRAM to address 0x000000000.
However, after this when I disassemble and see the code, it enters
an infinite loop right after 5 instructions. It is checking the contents
of the registers r0, r7, r10 .... (i have given the code below)
Kernel Image Starting Address in DRAM is 0x8000:
0x8000 nop
0x8004 teq r0,#0
0x8008 movne r0,#0x69
0x800c bne 0x8110 ; (__ret + 0xb8)
0x8010 bl 0x8118 ; (__ret + 0xc0)
0x8014 teq r10, #0
0x8018 moveq r0,#0x70
0x801c beq 0x8110 ; (__ret + 0xb8)
0x8020 bl 0x8168 ; (__ret + 0x110)
0x8024 teq r7,#0
0x8028 moveq r0,#0x61
0x802c beq 0x8110 ; (__ret + 0xb8)
0x8030 bl 0x80b0 ; (__ret + 0x58)
0x8034 add r14,pc,#0x1c ; #0x8058
0x8038 add pc,r10,#0xc
Here it is entering an infinite loop!
0x8110 nop
0x8114 b 0x8110 ; (__ret + 0xb8)
Finally is there a better way of downloading the kernel vmlinux
file to my Devlopment Board with ANGEL running on it???
Regards,
Lavu Sridhar
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