[ImageBuilder][PATCH 1/2] uboot-script-gen: Add support for static heap

["jiamei.xie" <jiamei.xie@xxxxxxx>]

From: jiamei Xie <jiamei.xie@xxxxxxx>

Add a new config parameter to configure static heap.
STATIC_HEAP="baseaddr1 size1 ... baseaddrN sizeN"
if specified, indicates the host physical address regions
[baseaddr, baseaddr + size) to be reserved as static heap.

For instance, STATIC_HEAP="0x50000000 0x30000000", if specified,
indicates the host memory region starting from paddr 0x50000000
with a size of 0x30000000 to be reserved as static heap.

Signed-off-by: jiamei Xie <jiamei.xie@xxxxxxx>
---
 README.md                |  4 ++++
 scripts/uboot-script-gen | 20 ++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/README.md b/README.md
index 814a004..787f413 100644
--- a/README.md
+++ b/README.md
@@ -256,6 +256,10 @@ Where:
 
 - NUM_CPUPOOLS specifies the number of boot-time cpupools to create.
 
+- STATIC_HEAP="baseaddr1 size1 ... baseaddrN sizeN"
+  if specified, indicates the host physical address regions
+  [baseaddr, baseaddr + size) to be reserved as static heap.
+
 Then you can invoke uboot-script-gen as follows:
 
 ```
diff --git a/scripts/uboot-script-gen b/scripts/uboot-script-gen
index f07e334..4775293 100755
--- a/scripts/uboot-script-gen
+++ b/scripts/uboot-script-gen
@@ -189,6 +189,21 @@ function add_device_tree_static_mem()
     dt_set "$path" "xen,static-mem" "hex" "${cells[*]}"
 }
 
+function add_device_tree_static_heap()
+{
+    local path=$1
+    local regions=$2
+    local cells=()
+    local val
+
+    for val in ${regions[@]}
+    do
+        cells+=("$(printf "0x%x 0x%x" $(($val >> 32)) $(($val & ((1 << 32) - 
1))))")
+    done
+
+    dt_set "$path" "xen,static-heap" "hex" "${cells[*]}"
+}
+
 function add_device_tree_cpupools()
 {
     local cpu
@@ -344,6 +359,11 @@ function xen_device_tree_editing()
     then
         add_device_tree_cpupools
     fi
+
+    if test "${STATIC_HEAP}"
+    then
+        add_device_tree_static_heap "/chosen" "${STATIC_HEAP}"
+    fi
 }
 
 function linux_device_tree_editing()
-- 
2.25.1