From 7379d0b05b11519ecbe586017939ed1b0a6871c4 Mon Sep 17 00:00:00 2001
From: Ayan Kumar Halder
Date: Fri, 17 Dec 2021 15:48:55 +0000
Subject: Refactor uboot-script-gen

Extract some of the functions from uboot-script-gen into common.
This will be sourced by disk_image(in subsequent patch) which will
invoke the functions for generating dtb.
common will have access to all the environment variables defined in
the Imagebuilder config file as described in README.md

Signed-off-by: Ayan Kumar Halder <ayankuma@xilinx.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
---
 scripts/common | 167 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 167 insertions(+)
 create mode 100644 scripts/common

(limited to 'scripts/common')

diff --git a/scripts/common b/scripts/common
new file mode 100644
index 0000000..f311ac5
--- /dev/null
+++ b/scripts/common
@@ -0,0 +1,167 @@
+#!/bin/bash
+
+# scripts/common makes use of variables defined in the ImageBuilder
+# config file as described in README.md, including but not limited to
+# the following:
+#
+# - UBOOT_SOURCE
+# - UBOOT_SCRIPT
+# - NUM_DOMUS
+# - DOMU_PASSTHROUGH_PATHS
+# - DOMU_PASSTHROUGH_DTB
+
+tmp_files=()
+tmp_dirs=()
+
+function remove_tmp_files()
+{
+    for i in "${tmp_files[@]}"
+    do
+        rm -r "$i"
+    done
+
+    for i in "${tmp_dirs[@]}"
+    do
+        rm -rf "$i"
+    done
+}
+
+function cleanup_and_return_err()
+{
+    rm -f $UBOOT_SOURCE $UBOOT_SCRIPT
+    remove_tmp_files
+    exit 1
+}
+
+function sanity_check_partial_dts()
+{
+    local domU_passthrough_path="$1"
+    local repo="$2"
+    local dir="$3"
+    local address_cells_val
+    local size_cells_val
+    local tmpdtb
+    local val
+    local file
+
+    for devpath in $domU_passthrough_path
+    do
+        file=${devpath##*/}
+        file="$repo"/"$dir"/"$file".dts
+
+        if ! test -f "$file"
+        then
+            echo "Device tree \"$file\" is not present"
+            cleanup_and_return_err
+        fi
+
+        tmpdtb=`mktemp`
+        dtc -I dts -O dtb -o $tmpdtb "$file"
+        tmp_files+=($tmpdtb)
+
+        val=$(fdtget $tmpdtb /passthrough \#address-cells)
+        if test -z "$address_cells_val"
+        then
+            address_cells_val="$val"
+        else
+            if test "$address_cells_val" -ne "$val"
+            then
+                echo "Address cells mismatch for ${DOMU_PASSTHROUGH_PATHS[$i]}"
+                cleanup_and_return_err
+            fi
+        fi
+
+        val=$(fdtget $tmpdtb /passthrough \#size-cells)
+        if test -z "$size_cells_val"
+        then
+            size_cells_val="$val"
+        else
+            if test "$size_cells_val" -ne "$val"
+            then
+                echo "Size cells mismatch for ${DOMU_PASSTHROUGH_PATHS[$i]}"
+                cleanup_and_return_err
+            fi
+        fi
+    done
+}
+
+function compile_merge_partial_dts()
+{
+    local repo=$(echo "$1" | awk '{print $1}')
+    local dir=$(echo "$1" | awk '{print $2}')
+    local tmp
+    local tmp_dtb_dir
+
+    if [[ "$repo" =~ .*@.*:.* ]]
+    then
+        tmp=`mktemp -d`
+        tmp_dirs+=($tmp)
+
+        echo "Cloning git repo \"$git_repo\""
+        git clone "$repo" $tmp
+        if [ $? -ne 0 ]
+        then
+            echo "Error occurred while cloning \"$git_repo\""
+            cleanup_and_return_err
+        fi
+
+        repo=$tmp
+    fi
+
+    tmp_dtb_dir=`mktemp -d "partial-dtbs-XXX"`
+
+    if test -z "$dir"
+    then
+        dir="."
+    fi
+
+    i=0
+    while test $i -lt $NUM_DOMUS
+    do
+        if test -z "${DOMU_PASSTHROUGH_PATHS[$i]}"
+        then
+            echo "DOMU_PASSTHROUGH_PATHS[$i] is not defined"
+            cleanup_and_return_err
+        fi
+
+        sanity_check_partial_dts "${DOMU_PASSTHROUGH_PATHS[$i]}" "$repo" "$dir"
+
+        tmp=`mktemp "$tmp_dtb_dir/partial-dts-domU$i-XXX"`
+        tmp_files+=($tmp)
+
+        j=1
+
+        for devpath in ${DOMU_PASSTHROUGH_PATHS[$i]}
+        do
+            file=${devpath##*/}
+            file="$repo"/"$dir"/"$file".dts
+
+            echo "/include/ \"$file\"" >> "$tmp"
+
+            # All the subsequent dts files should not have dts version mentioned
+            if [ $j -gt 1 ]
+            then
+                sed -i '/\/dts-v/d' "$file"
+            fi
+
+            j=$(( $j + 1 ))
+        done
+
+        dtc -I dts -O dtb -o "$tmp".dtb  "$tmp"
+        if [ $? -ne 0 ]
+        then
+            echo "Could not compile \"$tmp\""
+            cleanup_and_return_err
+        fi
+
+        if test "${DOMU_PASSTHROUGH_DTB[$i]}"
+        then
+            echo "Can't set both PASSTHROUGH_DTS_REPO and DOMU_PASSTHROUGH_DTB"
+            cleanup_and_return_err
+        fi
+
+        DOMU_PASSTHROUGH_DTB[$i]="$tmp".dtb
+
+        i=$(( $i + 1 ))
+    done
+}
-- 
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