wic: implement --bmap option

This option enables generation of <image>.bmap file for the
result image using native bmaptool.

[YOCTO #9413]

(From OE-Core rev: d64c7b37c40b052510419b4d6629b83319c833e4)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/creator.py

@@ -69,6 +69,7 @@ class Creator():
         optparser.add_option('', '--tmpfs', action='store_true', dest='enabletmpfs',
                              help='Setup tmpdir as tmpfs to accelerate, experimental'
                                   ' feature, use it if you have more than 4G memory')
+        optparser.add_option('', '--bmap', action='store_true', help='generate .bmap')
         return optparser
 
     def postoptparse(self, options):

scripts/lib/wic/engine.py

@@ -145,7 +145,7 @@ def list_source_plugins():
 
 def wic_create(wks_file, rootfs_dir, bootimg_dir, kernel_dir,
                native_sysroot, scripts_path, image_output_dir,
-               compressor, debug):
+               compressor, bmap, debug):
     """Create image
 
     wks_file - user-defined OE kickstart file
@@ -156,6 +156,7 @@ def wic_create(wks_file, rootfs_dir, bootimg_dir, kernel_dir,
     scripts_path - absolute path to /scripts dir
     image_output_dir - dirname to create for image
     compressor - compressor utility to compress the image
+    bmap - enable generation of .bmap
 
     Normally, the values for the build artifacts values are determined
     by 'wic -e' from the output of the 'bitbake -e' command given an
@@ -186,8 +187,12 @@ def wic_create(wks_file, rootfs_dir, bootimg_dir, kernel_dir,
 
     crobj = creator.Creator()
 
-    crobj.main(["direct", native_sysroot, kernel_dir, bootimg_dir, rootfs_dir,
-                wks_file, image_output_dir, oe_builddir, compressor or ""])
+    cmdline = ["direct", native_sysroot, kernel_dir, bootimg_dir, rootfs_dir,
+                wks_file, image_output_dir, oe_builddir, compressor or ""]
+    if bmap:
+        cmdline.append('--bmap')
+
+    crobj.main(cmdline)
 
     print("\nThe image(s) were created using OE kickstart file:\n  %s" % wks_file)
 

scripts/lib/wic/imager/direct.py

@@ -33,7 +33,7 @@ from wic.utils.partitionedfs import Image
 from wic.utils.errors import CreatorError, ImageError
 from wic.imager.baseimager import BaseImageCreator
 from wic.plugin import pluginmgr
-from wic.utils.oe.misc import exec_cmd
+from wic.utils.oe.misc import exec_cmd, exec_native_cmd
 
 disk_methods = {
     "do_install_disk":None,
@@ -71,7 +71,8 @@ class DirectImageCreator(BaseImageCreator):
     """
 
     def __init__(self, oe_builddir, image_output_dir, rootfs_dir, bootimg_dir,
-                 kernel_dir, native_sysroot, compressor, creatoropts=None):
+                 kernel_dir, native_sysroot, compressor, creatoropts=None,
+                 bmap=False):
         """
         Initialize a DirectImageCreator instance.
 
@@ -93,6 +94,7 @@ class DirectImageCreator(BaseImageCreator):
         self.kernel_dir = kernel_dir
         self.native_sysroot = native_sysroot
         self.compressor = compressor
+        self.bmap = bmap
 
     def __get_part_num(self, num, parts):
         """calculate the real partition number, accounting for partitions not
@@ -333,12 +335,17 @@ class DirectImageCreator(BaseImageCreator):
                                                         self.bootimg_dir,
                                                         self.kernel_dir,
                                                         self.native_sysroot)
-        # Compress the image
-        if self.compressor:
-            for disk_name, disk in self.__image.disks.items():
-                full_path = self._full_path(self.__imgdir, disk_name, "direct")
-                msger.debug("Compressing disk %s with %s" % \
-                            (disk_name, self.compressor))
+
+        for disk_name, disk in self.__image.disks.items():
+            full_path = self._full_path(self.__imgdir, disk_name, "direct")
+            # Generate .bmap
+            if self.bmap:
+                msger.debug("Generating bmap file for %s" % disk_name)
+                exec_native_cmd("bmaptool create %s -o %s.bmap" % (full_path, full_path),
+                                self.native_sysroot)
+            # Compress the image
+            if self.compressor:
+                msger.debug("Compressing disk %s with %s" % (disk_name, self.compressor))
                 exec_cmd("%s %s" % (self.compressor, full_path))
 
     def print_outimage_info(self):

scripts/lib/wic/plugins/imager/direct_plugin.py

@@ -86,7 +86,8 @@ class DirectPlugin(ImagerPlugin):
                                             kernel_dir,
                                             native_sysroot,
                                             compressor,
-                                            creatoropts)
+                                            creatoropts,
+                                            opts.bmap)
 
         try:
             creator.create()