This is a minimal configuration for running a busybox initramfs image with networking support. Added for convenience. Signed-off-by: Ariel Miculas <amiculas@xxxxxxxxx> --- arch/x86/configs/qemu-busybox-min.config | 11 +++++ kernel/configs/qemu-busybox-min.config | 56 ++++++++++++++++++++++++ 2 files changed, 67 insertions(+) create mode 100644 arch/x86/configs/qemu-busybox-min.config create mode 100644 kernel/configs/qemu-busybox-min.config diff --git a/arch/x86/configs/qemu-busybox-min.config b/arch/x86/configs/qemu-busybox-min.config new file mode 100644 index 000000000000..9a2bf2549053 --- /dev/null +++ b/arch/x86/configs/qemu-busybox-min.config @@ -0,0 +1,11 @@ +CONFIG_64BIT=y +CONFIG_ACPI=y + +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y + +CONFIG_HYPERVISOR_GUEST=y +CONFIG_PVH=y + +CONFIG_CMDLINE_BOOL=y +CONFIG_CMDLINE="console=ttyS0 nokaslr rdinit=/sbin/init" diff --git a/kernel/configs/qemu-busybox-min.config b/kernel/configs/qemu-busybox-min.config new file mode 100644 index 000000000000..51435e178199 --- /dev/null +++ b/kernel/configs/qemu-busybox-min.config @@ -0,0 +1,56 @@ +# This is a minimal configuration for running a busybox initramfs image with +# networking support. +# +# The following command can be used create the configuration for a minimal +# kernel image: +# +# make allnoconfig qemu-busybox-min.config +# +# The following command can be used to build the configuration for a default +# kernel image: +# +# make defconfig qemu-busybox-min.config +# +# On x86, the following command can be used to run qemu: +# +# qemu-system-x86_64 -nographic -kernel vmlinux -initrd initrd.img -nic user,model=rtl8139,hostfwd=tcp::5555-:23 +# +# On arm64, the following command can be used to run qemu: +# +# qemu-system-aarch64 -M virt -cpu cortex-a72 -nographic -kernel arch/arm64/boot/Image -initrd initrd.img -nic user,model=rtl8139,hostfwd=tcp::5555-:23 + +CONFIG_SMP=y +CONFIG_PRINTK=y +CONFIG_PRINTK_TIME=y + +CONFIG_PCI=y + +# We use an initramfs for busybox with elf binaries in it. +CONFIG_BLK_DEV_INITRD=y +CONFIG_RD_GZIP=y +CONFIG_BINFMT_ELF=y +CONFIG_BINFMT_SCRIPT=y + +# This is for /dev file system. +CONFIG_DEVTMPFS=y + +# Core networking (packet is for dhcp). +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_INET=y + +# RTL8139 NIC support. +CONFIG_NETDEVICES=y +CONFIG_ETHERNET=y +CONFIG_NET_VENDOR_REALTEK=y +CONFIG_8139CP=y + +# To get GDB symbols and script. +CONFIG_DEBUG_KERNEL=y +CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y +CONFIG_GDB_SCRIPTS=y + +# For the power-down button (triggered by qemu's `system_powerdown` command). +CONFIG_INPUT=y +CONFIG_INPUT_EVDEV=y +CONFIG_INPUT_KEYBOARD=y -- 2.34.1
