Adding TFTP

README.md

@@ -1859,8 +1859,8 @@ saveenv
 
 ## Add the Boot Command for TFTP
 setenv bootcmd_tftp "tftpboot ${kernel_addr_r} ${serverip}:Image ; tftpboot ${fdt_addr_r} ${serverip}:jh7110-star64-pine64.dtb ; fdt addr ${fdt_addr_r} ; booti ${kernel_addr_r} - ${fdt_addr_r}"
-run bootcmd_tftp
 saveenv
+run bootcmd_tftp
 
 ## Remember the Original Boot Targets
 setenv orig_boot_targets "$boot_targets"
@@ -1991,8 +1991,52 @@ tftpboot [loadAddress] [[hostIPaddr:]bootfilename]
 
 TODO: What is `fdt` command?
 
+```text
+fdt - flattened device tree utility commands
+
+Usage:
+fdt addr [-c]  <addr> [<length>]   - Set the [control] fdt location to <addr>
+fdt apply <addr>                    - Apply overlay to the DT
+fdt move   <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active
+fdt resize [<extrasize>]            - Resize fdt to size + padding to 4k addr + some optional <extrasize> if needed
+fdt print  <path> [<prop>]          - Recursive print starting at <path>
+fdt list   <path> [<prop>]          - Print one level starting at <path>
+fdt get value <var> <path> <prop>   - Get <property> and store in <var>
+fdt get name <var> <path> <index>   - Get name of node <index> and store in <var>
+fdt get addr <var> <path> <prop>    - Get start address of <property> and store in <var>
+fdt get size <var> <path> [<prop>]  - Get size of [<property>] or num nodes and store in <var>
+fdt set    <path> <prop> [<val>]    - Set <property> [to <val>]
+fdt mknode <path> <node>            - Create a new node after <path>
+fdt rm     <path> [<prop>]          - Delete the node or <property>
+fdt header [get <var> <member>]     - Display header info
+                                      get - get header member <member> and store it in <var>
+fdt bootcpu <id>                    - Set boot cpuid
+fdt memory <addr> <size>            - Add/Update memory node
+fdt rsvmem print                    - Show current mem reserves
+fdt rsvmem add <addr> <size>        - Add a mem reserve
+fdt rsvmem delete <index>           - Delete a mem reserves
+fdt chosen [<start> <end>]          - Add/update the /chosen branch in the tree
+                                        <start>/<end> - initrd start/end addr
+NOTE: Dereference aliases by omitting the leading '/', e.g. fdt print ethernet0.
+```
+
 TODO: What is `bootefi` command?
 
+```text
+bootefi - Boots an EFI payload from memory
+
+Usage:
+bootefi <image address> [fdt address]
+  - boot EFI payload stored at address <image address>.
+    If specified, the device tree located at <fdt address> gets
+    exposed as EFI configuration table.
+bootefi bootmgr [fdt address]
+  - load and boot EFI payload based on BootOrder/BootXXXX variables.
+
+    If specified, the device tree located at <fdt address> gets
+    exposed as EFI configuration table.
+```
+
 # U-Boot Bootloader Log for TFTP
 
 ```text