config_tools/target: generate Software SRAM related info

This patch parsees physical RTCT entries and dump information about pseudo
RAM into the board XML files. A macro named PRE_RTVM_SW_SRAM_BASE_GPA is
added to the generated misc_cfg.h according to recent design changes.

This patch still writes the board XML file manually, following the
convention of the current framework. Using XML-based approach requires a
complete refinement of the current generation process as the root
`acrn-config` node has its own text among adjacent children.

Tracked-On: #5649
Signed-off-by: Junjie Mao <junjie.mao@intel.com>

misc/config_tools/target/rtct.py

@@ -0,0 +1,43 @@
+# Copyright (C) 2021 Intel Corporation. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import os
+from acpiparser import parse_rtct
+import acpiparser.rtct
+import parser_lib
+
+def dump_psram(config):
+    print("\t<RTCT>", file=config)
+
+    rtct = None
+    if os.path.exists("/sys/firmware/acpi/tables/PTCT"):
+        rtct = parse_rtct(path="/sys/firmware/acpi/tables/PTCT")
+    elif os.path.exists("/sys/firmware/acpi/tables/RTCT"):
+        rtct = parse_rtct(path="/sys/firmware/acpi/tables/RTCT")
+
+    if rtct:
+        for entry in rtct.entries:
+            if entry.type == acpiparser.rtct.ACPI_RTCT_TYPE_SoftwareSRAM:
+                print("\t\t<SoftwareSRAM>", file=config)
+                print("\t\t\t<cache_level>{}</cache_level>".format(entry.cache_level), file=config)
+                print("\t\t\t<base>{}</base>".format(hex(entry.base)), file=config)
+                print("\t\t\t<ways>{}</ways>".format(hex(entry.ways)), file=config)
+                print("\t\t\t<size>{}</size>".format(hex(entry.size)), file=config)
+                for apic_id in entry.apic_id_tbl:
+                    print("\t\t\t<apic_id>{}</apic_id>".format(hex(apic_id)), file=config)
+                print("\t\t</SoftwareSRAM>", file=config)
+    else:
+        parser_lib.print_yel("No PTCT or RTCT found. The platform may not support pseudo RAM.")
+
+    print("\t</RTCT>", file=config)
+    print("", file=config)
+
+
+def generate_info(board_info):
+    """Get system pseudo RAM information
+    :param board_info: this is the file which stores the hardware board information
+    """
+    with open(board_info, 'a+') as config:
+        dump_psram(config)