| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 1 | # |
| 2 | # Device Tree Control |
| 3 | # |
| Googler | 5e15fb1 | 2022-06-11 12:44:13 +0800 | [diff] [blame^] | 4 | # TODO: |
| 5 | # This feature is not currently supported for SPL, |
| 6 | # but this restriction should be removed in the future. |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 7 | |
| 8 | config SUPPORT_OF_CONTROL |
| 9 | bool |
| 10 | |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 11 | menu "Device Tree Control" |
| Googler | 5e15fb1 | 2022-06-11 12:44:13 +0800 | [diff] [blame^] | 12 | depends on !SPL_BUILD |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 13 | depends on SUPPORT_OF_CONTROL |
| 14 | |
| 15 | config OF_CONTROL |
| 16 | bool "Run-time configuration via Device Tree" |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 17 | help |
| 18 | This feature provides for run-time configuration of U-Boot |
| 19 | via a flattened device tree. |
| 20 | |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 21 | choice |
| 22 | prompt "Provider of DTB for DT control" |
| 23 | depends on OF_CONTROL |
| 24 | |
| 25 | config OF_SEPARATE |
| 26 | bool "Separate DTB for DT control" |
| 27 | depends on !SANDBOX |
| 28 | help |
| 29 | If this option is enabled, the device tree will be built and |
| 30 | placed as a separate u-boot.dtb file alongside the U-Boot image. |
| 31 | |
| 32 | config OF_EMBED |
| 33 | bool "Embedded DTB for DT control" |
| 34 | help |
| 35 | If this option is enabled, the device tree will be picked up and |
| Googler | 5e15fb1 | 2022-06-11 12:44:13 +0800 | [diff] [blame^] | 36 | built into the U-Boot image. |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 37 | |
| 38 | config OF_HOSTFILE |
| 39 | bool "Host filed DTB for DT control" |
| 40 | depends on SANDBOX |
| 41 | help |
| 42 | If this option is enabled, DTB will be read from a file on startup. |
| 43 | This is only useful for Sandbox. Use the -d flag to U-Boot to |
| 44 | specify the file to read. |
| 45 | |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 46 | endchoice |
| 47 | |
| 48 | config DEFAULT_DEVICE_TREE |
| 49 | string "Default Device Tree for DT control" |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 50 | help |
| 51 | This option specifies the default Device Tree used for DT control. |
| 52 | It can be overridden from the command line: |
| 53 | $ make DEVICE_TREE=<device-tree-name> |
| 54 | |
| Googler | e00b8eb | 2019-07-08 16:37:07 -0700 | [diff] [blame] | 55 | endmenu |
