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image: add support for EROFS rootfs image generation

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Add support for generating EROFS rootfs images.

The EROFS filesystem can offer competitive I/O performance while
minimizing final image size when using the MicroLZMA compressor.

Target platform: linux-x86_generic (target-i386_pentium4_musl)

Filesystem     Image Size
=============  ==========
root.erofs     4882432
root.ext4      109051904
root.squashfs  4903302

Co-Developed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://github.com/openwrt/openwrt/pull/19244
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Gao Xiang
2025-06-26 01:45:22 +08:00
committed by Christian Marangi
parent 9ece943540
commit f7fa414d3b
8 changed files with 86 additions and 0 deletions
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scripts/target-metadata.pl
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@@ -18,6 +18,7 @@ sub target_config_features(@) {
/^dt$/ and $ret .= "\tselect USES_DEVICETREE\n";
/^dt-overlay$/ and $ret .= "\tselect HAS_DT_OVERLAY_SUPPORT\n";
/^emmc$/ and $ret .= "\tselect EMMC_SUPPORT\n";
/^erofs$/ and $ret .= "\tselect USES_EROFS\n";
/^ext4$/ and $ret .= "\tselect USES_EXT4\n";
/^fpu$/ and $ret .= "\tselect HAS_FPU\n";
/^gpio$/ and $ret .= "\tselect GPIO_SUPPORT\n";