[romfs] First version of mkromfs #76
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Because of incorrect #ifdef indentation, the CONFIG_ROM_DEBUG had no effect, resulting in breaking code execution at the end of setup.S when booting from a ROM image (option CONFIG_ROMCODE).
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This is the first step of my second sub-project after the NE2K driver : revise the current ROMFS to be able to burn the root file system into the 512K flash of my embedded device (that has no disk).
This tool compiles a minimal file system, without any alignment to take advantage of the flat nature of the ROM and that way not wasting space as on a block device.
The tool is built only if the user selects the ROMFS support in the kernel configuration.
Next steps are listed in mfld-fr#2.