squashboot/kernel.config at master · Daedaluz/squashboot · GitHub

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# squashboot kernel requirements
# Minimal kernel configuration fragments needed for squashboot to function.
# Apply with: scripts/kconfig/merge_config.sh .config kernel.config

# Loop device support (required to attach the squashfs image file)
CONFIG_BLK_DEV_LOOP=y

# SquashFS (the root filesystem image format)
CONFIG_SQUASHFS=y

# SquashFS compression support - enable the codec(s) matching your image
CONFIG_SQUASHFS_ZLIB=y
CONFIG_SQUASHFS_LZ4=y
CONFIG_SQUASHFS_LZO=y
CONFIG_SQUASHFS_XZ=y
CONFIG_SQUASHFS_ZSTD=y

# Pseudo / virtual filesystems
CONFIG_TMPFS=y           # /tmp, /run, /dev/shm
CONFIG_DEVTMPFS=y        # /dev population
CONFIG_DEVTMPFS_MOUNT=y  # auto-mount devtmpfs before init runs
CONFIG_PROC_FS=y         # /proc
CONFIG_SYSFS=y           # /sys
CONFIG_DEVPTS_FS=y       # /dev/pts

# cgroup v2 (/sys/fs/cgroup)
CONFIG_CGROUPS=y
CONFIG_CGROUP_V2=y

# configfs (/sys/kernel/config)
CONFIG_CONFIGFS_FS=y

# Kernel log buffer and /dev/kmsg (used for early logging)
CONFIG_PRINTK=y