boards: arm64: Add networking support to qemu_cortex_a53

	depends on SOC_QEMU_CORTEX_A53

	select ARM64

	select QEMU_TARGET

config QEMU_CORTEX_A53_ETH_E1000

	bool "Use Intel e1000 Ethernet driver for networking"

	default y if !NET_TEST

	depends on BOARD_QEMU_CORTEX_A53 && NETWORKING && DT_HAS_INTEL_E1000_ENABLED

	select ETH_E1000

	select NET_L2_ETHERNET

	select PCIE

	select PCIE_CONTROLLER

	select PCIE_ECAM

config MAX_THREAD_BYTES

	default 3

if NETWORKING

choice NET_QEMU_NETWORKING

	default NET_QEMU_ETHERNET if QEMU_CORTEX_A53_ETH_E1000

endchoice

config NET_DRIVERS

	default n if QEMU_CORTEX_A53_ETH_E1000

endif # NETWORKING

# QEMU PCI requires at least 256M of virtual space

config KERNEL_VM_SIZE

	default 0x80000000 if PCIE

# QEMU PCI requires physical addresses with more than 32 bits

choice ARM64_VA_BITS

	default ARM64_VA_BITS_40 if PCIE

endchoice

choice ARM64_PA_BITS

	default ARM64_PA_BITS_40 if PCIE

endchoice

endif # BOARD_QEMU_CORTEX_A53

Networking

==========

The board supports the QEMU built-in Ethernet adapter to connect to the host

system. See :ref:`networking_with_eth_qemu` for details.

It is also possible to use SLIP networking over an emulated serial port.

Although this board only supports a single UART, so subsystems like logging

and shell would need to be disabled, therefore this is not directly supported.

References

**********

	status = "okay";

	current-speed = <115200>;

};

&pcie {

	eth0: eth@0 {

		compatible = "intel,e1000";

		vendor-id = <0x8086>;

		device-id = <0x100e>;

		interrupts = <2>;

		interrupt-parent = <&pcie>;

		/* Prevent device tree error "lacks 'reg' property" */

		reg = <0x00 0x00 0x00 0x00 0x01>;

		status = "okay";

	};

};