Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
hw/acpi/aml-build.c | 28 ++++++++++++++++++++++++++++
include/hw/acpi/aml-build.h | 6 ++++++
2 files changed, 34 insertions(+)
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 05d4a3d..10995a9 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -217,6 +217,16 @@ build_prepend_package_length(GArray *package, unsigned
length, bool incl_self)
build_prepend_byte(package, byte);
}
+static void
+build_append_pkg_length(GArray *array, unsigned length, bool incl_self)
+{
+ GArray *tmp = build_alloc_array();
+
+ build_prepend_package_length(tmp, length, incl_self);
+ build_append_array(array, tmp);
+ build_free_array(tmp);
+}
+
void build_package(GArray *package, uint8_t op)
{
build_prepend_package_length(package, package->len, true);
@@ -619,3 +629,21 @@ Aml *aml_operation_region(const char *name, AmlRegionSpace
rs,
build_append_int(var->buf, len);
return var;
}
+
+/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: NamedField */
+Aml *aml_named_field(const char *name, unsigned length)
+{
+ Aml *var = aml_alloc();
+ build_append_nameseg(var->buf, name);
+ build_append_pkg_length(var->buf, length, false);
+ return var;
+}
+
+/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */
+Aml *aml_field(const char *name, AmlFieldFlags flags)
+{
+ Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE);
+ build_append_namestring(var->buf, "%s", name);
+ build_append_byte(var->buf, flags);
+ return var;
+}
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 6db9d42..8b954d9 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -37,6 +37,10 @@ typedef enum {
} AmlIODecode;
typedef enum {
+ aml_byte_acc = 1,
+} AmlFieldFlags;
+
+typedef enum {
aml_system_memory = 0x00,
aml_system_io = 0x01,
} AmlRegionSpace;
@@ -96,6 +100,7 @@ Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t
max_base,
uint8_t aln, uint8_t len);
Aml *aml_operation_region(const char *name, AmlRegionSpace rs,
uint32_t offset, uint32_t len);
+Aml *aml_named_field(const char *name, unsigned length);
/* Block AML object primitives */
Aml *aml_def_block(const char *signature, uint8_t revision,
@@ -109,6 +114,7 @@ Aml *aml_if(Aml *predicate);
Aml *aml_package(uint8_t num_elements);
Aml *aml_buffer(void);
Aml *aml_resource_template(void);
+Aml *aml_field(const char *name, AmlFieldFlags flags);
/* other helpers */
GArray *build_alloc_array(void);
--
1.8.3.1
