Add domain capabilities to creating disaggregated systems.
Signed-off-by: Jason Andryuk <jason.andr...@amd.com>
---
README.md | 16 ++++++++++++++
scripts/uboot-script-gen | 47 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+)
diff --git a/README.md b/README.md
index ae2fdfd..25c9b6e 100644
--- a/README.md
+++ b/README.md
@@ -250,6 +250,22 @@ Where:
Set driver_domain in xl config file. This option is only available for
the disk_image script.
+- DOMU_CAPS[number] = "string" or "hex" (optional)
+ A "|"-concatentated string of capabilities:
+ - control
+ - hardware
+ - xenstore
+ - dom0 (All of the above)
+ - none
+
+ e.g. "control|hardware"
+
+ Or a numeric bitwise flags to specify domain capabilities:
+ 0: None
+ 1: Control
+ 2: Hardware
+ 4: Xenstore
+
- LINUX is optional but specifies the Linux kernel for when Xen is NOT
used. To enable this set any LINUX\_\* variables and do NOT set the
XEN variable.
diff --git a/scripts/uboot-script-gen b/scripts/uboot-script-gen
index db2c011..397d73b 100755
--- a/scripts/uboot-script-gen
+++ b/scripts/uboot-script-gen
@@ -309,6 +309,43 @@ function add_device_tree_cpupools()
done
}
+function parse_domain_caps()
+{
+ local caps_str="$1"
+ local caps=0
+
+ for x in $( echo $caps_str | sed 's/|/ /g' | tr '[:upper:]' '[:lower:]' )
+ do
+ case "$x" in
+ none)
+ caps=$(( caps | 0 ))
+ ;;
+ control)
+ caps=$(( caps | 0x1 ))
+ ;;
+ hardware)
+ caps=$(( caps | 0x2 ))
+ ;;
+ xenstore)
+ caps=$(( caps | 0x4 ))
+ ;;
+ dom0|domain0)
+ caps=$(( caps | 0x7 ))
+ ;;
+ [0-9]*|0x[0-9a-fA-f]*)
+ caps=$(( caps | $x ))
+ ;;
+ *)
+ return 1
+ ;;
+ esac
+ done
+
+ echo "$caps"
+
+ return 0
+}
+
function xen_device_tree_editing()
{
dt_set "/chosen" "#address-cells" "hex" "0x2"
@@ -386,6 +423,16 @@ function xen_device_tree_editing()
then
dt_set "/chosen/domU$i" "max_maptrack_frames" "int"
"${DOMU_MAPTRACK_FRAMES[i]}"
fi
+ if test -n "${DOMU_CAPS[i]}"
+ then
+ local caps
+
+ if ! caps=$( parse_domain_caps ${DOMU_CAPS[i]} ) ; then
+ echo "Invalid DOMU_CAPS[$i] \"${DOMU_CAPS[i]}\""
+ cleanup_and_return_err
+ fi
+ dt_set "/chosen/domU$i" "capabilities" "int" "$caps"
+ fi
if test -n "${DOMU_SHARED_MEM[i]}"
then
--
2.48.1
