Patchwork [RFC,v2,01/21,SeaBIOS] Add ACPI_EXTRACT_DEVICE* macros

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Submitter Vasilis Liaskovitis
Date July 11, 2012, 10:31 a.m.
Message ID <1342002726-18258-2-git-send-email-vasilis.liaskovitis@profitbricks.com>
Download mbox | patch
Permalink /patch/170421/
State New
Headers show

Comments

Vasilis Liaskovitis - July 11, 2012, 10:31 a.m.
This allows to extract the beginning, end and name of a Device object.

Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
---
 tools/acpi_extract.py |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

Patch

diff --git a/tools/acpi_extract.py b/tools/acpi_extract.py
index 167a322..cb2540e 100755
--- a/tools/acpi_extract.py
+++ b/tools/acpi_extract.py
@@ -195,6 +195,28 @@  def aml_package_start(offset):
     offset += 1
     return offset + aml_pkglen_bytes(offset) + 1
 
+def aml_device_start(offset):
+    #0x5B 0x82 DeviceOp PkgLength NameString ProcID
+    if ((aml[offset] != 0x5B) or (aml[offset + 1] != 0x82)):
+        die( "Name offset 0x%x: expected 0x5B 0x83 actual 0x%x 0x%x" %
+             (offset, aml[offset], aml[offset + 1]));
+    return offset
+
+def aml_device_string(offset):
+    #0x5B 0x82 DeviceOp PkgLength NameString ProcID
+    start = aml_device_start(offset)
+    offset += 2
+    pkglenbytes = aml_pkglen_bytes(offset)
+    offset += pkglenbytes
+    return offset
+
+def aml_device_end(offset):
+    start = aml_device_start(offset)
+    offset += 2
+    pkglenbytes = aml_pkglen_bytes(offset)
+    pkglen = aml_pkglen(offset)
+    return offset + pkglen
+
 lineno = 0
 for line in fileinput.input():
     # Strip trailing newline
@@ -279,6 +301,12 @@  for i in range(len(asl)):
         offset = aml_processor_end(offset)
     elif (directive == "ACPI_EXTRACT_PKG_START"):
         offset = aml_package_start(offset)
+    elif (directive == "ACPI_EXTRACT_DEVICE_START"):
+        offset = aml_device_start(offset)
+    elif (directive == "ACPI_EXTRACT_DEVICE_STRING"):
+        offset = aml_device_string(offset)
+    elif (directive == "ACPI_EXTRACT_DEVICE_END"):
+        offset = aml_device_end(offset)
     else:
         die("Unsupported directive %s" % directive)