diff options
| author | Brian Woods | 2021-07-19 15:28:28 -0700 |
|---|---|---|
| committer | Stefano Stabellini | 2021-07-19 17:08:00 -0700 |
| commit | 4fc035694cdd5b57e73c148654d3cb991ecf9014 (patch) | |
| tree | 0acd1e1ab8b3cf68f5c047e674648b90f1d534e1 /README.md | |
| parent | 2845ebb71c017cac08563c953bca26e48daa17e2 (diff) | |
Add support for device tree overlays
Device tree overlaps support in u-boot means that adding overlay support
at boot time is easy. Simply loading the files via tftp/scsi/fit etc
and then applying the overlays before the normal imagebuilder fdt edits
at boot time allows for applying overlays without changing the device
tree files.
Signed-off-by: Brian Woods <brian.woods@xilinx.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -36,6 +36,9 @@ DOM0_KERNEL="Image-dom0" DOM0_CMD="console=hvc0 earlycon=xen earlyprintk=xen clk_ignore_unused" DOM0_RAMDISK="dom0-ramdisk.cpio" +NUM_DT_OVERLAY=1 +DT_OVERLAY[0]="host_dt_overlay.dtbo" + NUM_DOMUS=2 DOMU_KERNEL[0]="zynqmp-dom1/Image-domU" DOMU_RAMDISK[0]="zynqmp-dom1/domU-ramdisk.cpio" @@ -70,6 +73,12 @@ Where: - DOM0_RAMDISK specifies the Dom0 ramdisk to use. Note that it should be a regular ramdisk cpio.gz file, not a u-boot binary. +- NUM_DT_OVERLAY specifies the number of host device tree overlays to be + added at boot time in u-boot + +- DT_OVERLAY[number] specifies the path to the hosts device tree overlays + to be added at boot time in u-boot + - NUM_DOMUS specifies how many Dom0-less DomUs to load - DOMU_KERNEL[number] specifies the DomU kernel to use. |