Implement the loading of initrd image #25
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jserv
reviewed
Jul 27, 2023
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Reservation of 32MiB introduces about 20~30 seconds of extra booting time on my The user may find the OS stop at the following line for a while: One dirty fix for short term might be shrinking the size of the |
Let's set 8 MB by default and introduce build-time option to specify the memory layout. |
jserv
reviewed
Jul 28, 2023
In this commit, the `rootfs.cpio` provided by the buildroot can be passed to semu with -i option. In order to achieve such function, the following modifcations are conducted: 1. Reserve 8 MiB of memory at the end of the guest OS before the dtb region, and map initrd image to the new reserved area. 2. Adjust device tree source by specifying `initrd-start` and `initrd-end`. 3. Support passing initrd image with -i option.
This commit forces the Linux kernel to load initrd image from external environment.
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This pull request is for solving #24, where the modifications mainly include:
initrd-startandinitrd-endproperties.initramfsby default.build-image.shto copy therootfs.cpiofile frombuildroot/to project's root directory.