From 6f5ecb4a9d780378ed3733a7c838b10e5d0a832d Mon Sep 17 00:00:00 2001
From: Stefano Stabellini
Date: Fri, 17 Jun 2022 18:19:33 -0700
Subject: Add support for cache coloring

Generate the coloring information for Xen, dom0 and domUs based on
information on the config file.

Cache coloring is not upstreaming but it was published to xen-devel
already. It is very useful to be able to provide a cache coloring
configuration via config file instead of manually editing boot.source.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
---
 scripts/uboot-script-gen | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

(limited to 'scripts')

diff --git a/scripts/uboot-script-gen b/scripts/uboot-script-gen
index 001f6ed..48b36a3 100755
--- a/scripts/uboot-script-gen
+++ b/scripts/uboot-script-gen
@@ -203,6 +203,21 @@ function xen_device_tree_editing()
             add_device_tree_static_mem "/chosen/domU$i" "${DOMU_STATIC_MEM[$i]}"
         fi
         dt_set "/chosen/domU$i" "vpl011" "hex" "0x1"
+
+        if test "${DOMU_COLORS[$i]}"
+        then
+            local startcolor=$(echo "${DOMU_COLORS[$i]}"  | cut -d "-" -f 1)
+            local endcolor=$(echo "${DOMU_COLORS[$i]}"  | cut -d "-" -f 2)
+            local bitcolors=0
+            local bit=$startcolor
+            while test $bit -le $endcolor
+            do
+                bitcolors=$(( $bitcolors | $(( 1 << $bit)) ))
+                bit=$(( $bit + 1 ))
+            done
+            dt_set "/chosen/domU$i" "colors" "hex" "$(printf "0x%x" $bitcolors)"
+        fi
+
         add_device_tree_kernel "/chosen/domU$i" ${domU_kernel_addr[$i]} ${domU_kernel_size[$i]} "${DOMU_CMD[$i]}"
         if test "${domU_ramdisk_addr[$i]}"
         then
@@ -384,7 +399,16 @@ function xen_config()
             DOM0_VCPUS="1"
         fi
 
-        XEN_CMD="console=dtuart dtuart=serial0 dom0_mem=${DOM0_MEM}M dom0_max_vcpus=${DOM0_VCPUS} bootscrub=0 vwfi=native sched=null"
+        if test "$DOM0_COLORS"
+        then
+            DOM0_COLORS="dom0_colors=$DOM0_COLORS"
+        fi
+        if test "$XEN_COLORS"
+        then
+            XEN_COLORS="xen_colors=$XEN_COLORS"
+        fi
+
+        XEN_CMD="console=dtuart dtuart=serial0 dom0_mem=${DOM0_MEM}M dom0_max_vcpus=${DOM0_VCPUS} bootscrub=0 vwfi=native sched=null $XEN_COLORS $DOM0_COLORS"
     else
         if [ "$DOM0_MEM" ] || [ "$DOM0_VCPUS" ]
         then
-- 
cgit v1.2.3