Difference between revisions of "Linux Debug"
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# imxregs OCR1_D 123 | # imxregs OCR1_D 123 | ||
| − | === | + | ===fpgaregs=== |
| + | |||
| + | This tool allows you to access FPGA registers from linux userspace/console. This way you can easily debug your driver directly from the Linux console. | ||
| + | |||
| + | First, you have enable this tool in Buildroot (package selection for target): | ||
| + | $ make menuconfig | ||
| + | |||
| + | Once done, compile it: | ||
| + | $ make | ||
| + | |||
| + | The generated file is located in buildroot/build_arm_nofpu/fpgaregs-1.0/. Now you can copy it on your target. | ||
| + | Then in linux, launch it like that: | ||
| + | # fpgaregs address (for read) or fpga address value (for write) | ||
| + | |||
| + | ====Examples:==== | ||
| + | Show register at internal FPGA address 0x0010: | ||
| + | # fpgaregs 0x0010 | ||
| + | |||
| + | Write 0x0123 to FPGA register 0x0020: | ||
| + | # imxregs 0x0020 0x0123 | ||
| + | |||
===Links=== | ===Links=== | ||
http://www.armadeus.com | http://www.armadeus.com | ||
Revision as of 21:18, 15 December 2006
- Tips to do debug under linux **
Contents
Introduction
On this page, you will find usefull informations for debugging Armadeus under Linux
Testing Linux kernel
You can test a linux kernel you've generated without to have to reflash your board and destroy your currently working image. Indeed Linux kernel images can be loaded and started from RAM:
BIOS> tftpboot 0x08800000 linux-kernel-2.6.16-arm.bin BIOS> bootm 0x08800000
imxregs
This tool allows you to access iMX registers from linux userspace/console. This way you debug your driver or access iMX hardware functionnalities directly from Linux console.
First, you have enable this tool in Buildroot (package selection for target):
$ make menuconfig
Once done, compile it:
$ make
The generated file is located in buildroot/build_arm_nofpu/imxregs-1.0/. Now you can copy it on your target.
To use it, you must clear PAR 1&2 registers (register access rights) before launching Linux kernel, so in U-Boot type:
BIOS> mw.l 0x00200008 0 BIOS> mw.l 0x00210008 0
Then in linux, launch it like that:
# imxregs REGISTER_NAME (give it the register name as printed in iMX Ref Manual or just the begining of the name)
or
# imxregs (to dump all supported registers)
Examples:
Show OCR1 registers of each GPIO Port:
# imxregs OCR1
Write 123 to OCR1_D register:
# imxregs OCR1_D 123
fpgaregs
This tool allows you to access FPGA registers from linux userspace/console. This way you can easily debug your driver directly from the Linux console.
First, you have enable this tool in Buildroot (package selection for target):
$ make menuconfig
Once done, compile it:
$ make
The generated file is located in buildroot/build_arm_nofpu/fpgaregs-1.0/. Now you can copy it on your target. Then in linux, launch it like that:
# fpgaregs address (for read) or fpga address value (for write)
Examples:
Show register at internal FPGA address 0x0010:
# fpgaregs 0x0010
Write 0x0123 to FPGA register 0x0020:
# imxregs 0x0020 0x0123
