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| kernel_modules [2026-06-08 06:44 UTC (3 months ago)] – create kernel modules page fredchan | kernel_modules [2026-07-31 01:18 UTC (4 weeks ago)] (current) – [Building] fix missing filename fredchan |
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| - Obtain the Linux kernel config from the PM3, located at ''/proc/config.gz''. Unzip this file to ''.config'' in the root of the kernel source. | - Obtain the Linux kernel config from the PM3, located at ''/proc/config.gz''. Unzip this file to ''.config'' in the root of the kernel source. |
| - In ''.config'', change the line ''CONFIG_LOCALVERSION_AUTO=y'' to ''CONFIG_LOCALVERSION_AUTO=n''. | - In ''.config'', change the line ''CONFIG_LOCALVERSION_AUTO=y'' to ''CONFIG_LOCALVERSION_AUTO=n''. |
| - If you're trying to build kernel modules that are already in the Linux source code, set the appropriate config options to ''m''. For example, setting ''CONFIG_SLIP=m'' enabled SLIP support to be compiled to ''drivers/net/slip/.ko''. | - If you're trying to build kernel modules that are already in the Linux source code, set the appropriate config options to ''m''. For example, setting ''CONFIG_SLIP=m'' enabled SLIP support to be compiled to ''drivers/net/slip/slip.ko''. |
| - In ''Makefile'', change the line ''EXTRAVERSION ='' to ''EXTRAVERSION = -fsl-imx-INIT-004'', or whatever comes after the PM3's ''uname -r'' for you. | - In ''Makefile'', change the line ''EXTRAVERSION ='' to ''EXTRAVERSION = -fsl-imx-INIT-004'', or whatever comes after the PM3's ''uname -r'' for you. |
| - In ''/scripts/dtc/dtc-lexer.lex.c'' and ''/scripts/dtc/dtc-lexer.lex.c_shipped'', change ''YYLTYPE yylloc;'' to ''extern YYLTYPE yylloc;'' | - In ''/scripts/dtc/dtc-lexer.lex.c'' and ''/scripts/dtc/dtc-lexer.lex.c_shipped'', change ''YYLTYPE yylloc;'' to ''extern YYLTYPE yylloc;'' |
| - Run ''git add .'' and ''git commit''. | - Run ''git add .'' and ''git commit''. |
| - Run ''make LOCALVERSION= -C . modules'' | - Run ''make LOCALVERSION= -C . modules''. |
| | * If you are using Dockcross and you are in a bash environment inside the container, you may need to run ''sudo make'' instead of just ''make''. |
| - ''scp'' your new kernel module to the PM3 and load it with ''insmod your_module.ko''. If it fails, check ''dmesg'' to see what's wrong. | - ''scp'' your new kernel module to the PM3 and load it with ''insmod your_module.ko''. If it fails, check ''dmesg'' to see what's wrong. |
| |
| | ==== Problems ==== |
| | If you fail to load a kernel module and dmesg shows something like the following: |
| | <code> |
| | version magic '4.9.166-fsl-imx-INIT-004+ preempt ARMv7 p2v8 ' should be '4.9.166-fsl-imx-INIT-004 preempt ARMv7 p2v8 ' |
| | </code> |
| | <code> |
| | version magic '4.9.166-fsl-imx-INIT-004-dirty preempt ARMv7 p2v8 ' should be '4.9.166-fsl-imx-INIT-004 preempt ARMv7 p2v8 ' |
| | </code> |
| | Then double check: |
| | * That ''CONFIG_LOCALVERSION_AUTO=n'' is set in ''.config''. |
| | * That your ''make'' command has the option ''LOCALVERSION= ''. |
| | * That you have no uncommitted changes according to git. |
