ARM target not boot after remap memory
- From: Robin Theunis <robint91@xxxxxxxxx>
- Date: Mon, 13 Sep 2010 13:25:26 +0200
I'm trying to build linux 22.214.171.124 for a AT91RM9200 target. The whole
build process is successful because I get correct kernel images and
also a uImage for U-boot.
The U-boot version is 2010.08. I have build the whole system on a
64bit ubuntu machine. I use the latest buildroot to make the toolchain
and etc. At this moment I have a
openocd jtag dongle connected to my target for debug sessions.
I have check that the machine id/type are correct. I have gotten those
error messages of a unsupported target. I have resolved those errors.
The target is self is a AT91RM9200 with 64MiB ram and 16MiB cfi flash.
The boot args of u-boot are "console=ttyS0,115200n8
root=/dev/mtdblock0 rootfstype=jffs2 mem=64M".
The problem is now when linux kernel is booting, nothing happens.
## Booting kernel from Legacy Image at 21000000 ...
Image Name: Linux-126.96.36.199robin9200v1.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1811796 Bytes = 1.7 MiB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Here is stalls. With my jtag probe I can locate the problem.
halttarget state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0x600000d3 pc: 0xc000af3c
MMU: enabled, D-Cache: enabled, I-Cache: enabled
arm disassemble 0xc000af3c0xc000af3c 0xeafffffe B 0xc000af3c
This just loops at that address. Why does it that?
You see that the mmu is enabled and the cpu has remapped the memory.
Does someone have a clue what goes wrong?
Here is the .config and board file.
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