include: net: phytec: Add K3 network boot logic

This boot logic allows to boot a Kernel image, Device-Tree blob
and overlays via tftp/dhcp (configurable with 'net_fetch_cmd').
Additionally, it loads a rootfs via NFS.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>

diff --git a/include/env/phytec/k3_net.env b/include/env/phytec/k3_net.env
new file mode 100644 (file)
index 0000000..377e406
--- /dev/null
+++ b/include/env/phytec/k3_net.env
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2024 PHYTEC Messtechnik GmbH
+ * Author: Daniel Schultz <d.schultz@phytec.de>
+ */
+
+/* Logic for TI K3 based SoCs to boot via network. */
+
+#include <env/phytec/overlays.env>
+
+netargs=setenv bootargs console=${console} root=/dev/nfs ip=dhcp rw
+       nfsroot=${serverip}:${nfsroot},vers=4,tcp
+netloadimage=${net_fetch_cmd} ${kernel_addr_r} ${serverip}:/Image
+netloadfdt=${net_fetch_cmd} ${fdt_addr_r} ${serverip}:/${fdtfile}
+netboot=run netargs;
+       setenv autoload no;
+       dhcp;
+       run netloadimage;
+       run netloadfdt;
+       run net_apply_overlays;
+       run net_apply_extensions;
+       booti ${kernel_addr_r} - ${fdt_addr_r}