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i386: Add an ACPI_EXTRACT_NAME_BUFFER16 directive. 

Add a 16-bytes buffer to allow storing a 128-bit UUID value in an
ACPI table.

Signed-off-by: Gal Hammer <ghammer@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gal Hammer 2014-09-17 14:39:51 +03:00 committed by Michael S. Tsirkin
parent df1fd4b541
commit 1c87d68c91
1 changed files with 14 additions and 9 deletions
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23
scripts/acpi_extract.py
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@ -139,13 +139,16 @@ def aml_name_string(offset):
offset += 1
return offset;
# Given data offset, find 8 byte buffer offset
def aml_data_buffer8(offset):
#0x08 NameOp NameString DataRef
expect = [0x11, 0x0B, 0x0A, 0x08]
# Given data offset, find variable length byte buffer offset
def aml_data_buffer(offset, length):
#0x11 PkgLength BufferSize ByteList
if (length > 63):
die( "Name offset 0x%x: expected a one byte PkgLength (length<=63)" %
(offset));
expect = [0x11, length+3, 0x0A, length]
if (aml[offset:offset+4] != expect):
die( "Name offset 0x%x: expected %s actual %s" %
(offset, aml[offset:offset+4], expect))
(offset, expect, aml[offset:offset+4]))
return offset + len(expect)
# Given data offset, find dword const offset
@ -172,9 +175,9 @@ def aml_data_byte_const(offset):
(offset, aml[offset]));
return offset + 1;
# Find name'd buffer8
def aml_name_buffer8(offset):
return aml_data_buffer8(aml_name_string(offset) + 4)
# Find name'd buffer
def aml_name_buffer(offset, length):
return aml_data_buffer(aml_name_string(offset) + 4, length)
# Given name offset, find dword const offset
def aml_name_dword_const(offset):
@ -308,7 +311,9 @@ for i in range(len(asl)):
output[array] = aml
continue
if (directive == "ACPI_EXTRACT_NAME_BUFFER8"):
offset = aml_name_buffer8(offset)
offset = aml_name_buffer(offset, 8)
elif (directive == "ACPI_EXTRACT_NAME_BUFFER16"):
offset = aml_name_buffer(offset, 16)
elif (directive == "ACPI_EXTRACT_NAME_DWORD_CONST"):
offset = aml_name_dword_const(offset)
elif (directive == "ACPI_EXTRACT_NAME_WORD_CONST"):