linux-ramdump-parser-v2: Add option for custom page offset

Some binaries may be compiled with a different page offset. Add
an option to allow the page offset to be adjusted properly.

Change-Id: I50cf0241f8a52aa0f9cd070da827775b5cb4764c

linux-ramdump-parser-v2/ramdump.py

@@ -436,7 +436,8 @@ class RamDump():
                 if urc < 0:
                     break
 
-    def __init__(self, vmlinux_path, nm_path, gdb_path, ebi, file_path, phys_offset, outdir, hw_id=None, hw_version=None, arm64=False):
+    def __init__(self, vmlinux_path, nm_path, gdb_path, ebi, file_path, phys_offset, outdir, hw_id=None, hw_version=None, arm64=False,
+                   page_offset=None):
         self.ebi_files = []
         self.phys_offset = None
         self.tz_start = 0
@@ -476,11 +477,14 @@ class RamDump():
                 '[!!!] Phys offset was set to {0:x}'.format(phys_offset))
             self.phys_offset = phys_offset
         self.lookup_table = []
-        self.page_offset = 0xc0000000
         self.config = []
         if self.arm64:
             self.page_offset = 0xffffffc000000000
             self.thread_size = 16384
+        if page_offset is not None:
+            print_out_str(
+                '[!!!] Page offset was set to {0:x}'.format(page_offset))
+            self.page_offset = page_offset
         self.setup_symbol_tables()
 
         # The address of swapper_pg_dir can be used to determine

linux-ramdump-parser-v2/ramparse.py

@@ -106,6 +106,8 @@ if __name__ == '__main__':
                       dest='stdout', help='Dump to stdout instead of the file')
     parser.add_option('', '--phys-offset', type='int',
                       dest='phys_offset', help='use custom phys offset')
+    parser.add_option('', '--page-offset', type='int',
+                      dest='page_offset', help='use custom page offset')
     parser.add_option('', '--force-hardware', type='int',
                       dest='force_hardware', help='Force the hardware detection')
     parser.add_option(
@@ -260,7 +262,8 @@ if __name__ == '__main__':
     dump = RamDump(options.vmlinux, nm_path, gdb_path, options.ram_addr,
                    options.autodump, options.phys_offset, options.outdir,
                    options.force_hardware, options.force_hardware_version,
-                   arm64=options.arm64)
+                   arm64=options.arm64,
+                   page_offset=options.page_offset)
 
     if options.shell or options.classic_shell:
         print("Entering interactive shell mode.")