aboutsummaryrefslogtreecommitdiffstats
path: root/docs/plat/xilinx-versal.rst
diff options
context:
space:
mode:
Diffstat (limited to 'docs/plat/xilinx-versal.rst')
-rw-r--r--docs/plat/xilinx-versal.rst8
1 files changed, 8 insertions, 0 deletions
diff --git a/docs/plat/xilinx-versal.rst b/docs/plat/xilinx-versal.rst
index 95c89a8b2..57a363bc9 100644
--- a/docs/plat/xilinx-versal.rst
+++ b/docs/plat/xilinx-versal.rst
@@ -33,3 +33,11 @@ Xilinx Versal platform specific build options
* `VERSAL_PLATFORM`: Select the platform. Options:
- `versal_virt` : Versal Virtual platform
+
+# PLM->TF-A Parameter Passing
+------------------------------
+The PLM populates a data structure with image information for the TF-A. The TF-A
+uses that data to hand off to the loaded images. The address of the handoff
+data structure is passed in the ```PMC_GLOBAL_GLOB_GEN_STORAGE4``` register.
+The register is free to be used by other software once the TF-A is bringing up
+further firmware images.