diff mbox series

[hack,dontapply,v2,3/7] acpi: aml_load/aml_unload

Message ID 20180710000024.542612-4-mst@redhat.com
State New
Headers show
Series Dynamic _CST generation | expand

Commit Message

Michael S. Tsirkin July 10, 2018, 12:01 a.m. UTC 
Dynamic loading/unloading of tables.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/hw/acpi/aml-build.h |  2 ++
 hw/acpi/aml-build.c         | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)
diff mbox series

Patch

diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 7cf2cf64bf..f764f71e25 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -381,6 +381,8 @@  Aml *aml_derefof(Aml *arg);
 Aml *aml_sizeof(Aml *arg);
 Aml *aml_concatenate(Aml *source1, Aml *source2, Aml *target);
 Aml *aml_object_type(Aml *object);
+Aml *aml_load(const char *name, Aml *ddbhandle);
+Aml *aml_unload(Aml *ddbhandle);
 
 void build_append_int_noprefix(GArray *table, uint64_t value, int size);
 void
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 7165f19585..ce691c1618 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1552,6 +1552,27 @@  Aml *aml_object_type(Aml *object)
     return var;
 }
 
+/* ACPI 2.0: 17.2.4.3 Type 1 Opcodes Encoding: DefLoad */
+Aml *aml_load(const char *name, Aml *ddbhandle)
+{
+    Aml *var = aml_alloc();
+    build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */
+    build_append_byte(var->buf, 0x20); /* LoadOp */
+    aml_append(var, aml_name("%s", name));
+    aml_append(var, ddbhandle);
+    return var;
+}
+
+/* ACPI 2.0: 17.2.4.3 Type 1 Opcodes Encoding: DefUnload */
+Aml *aml_unload(Aml *ddbhandle)
+{
+    Aml *var = aml_alloc();
+    build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */
+    build_append_byte(var->buf, 0x2A); /* UnloadOp */
+    aml_append(var, ddbhandle);
+    return var;
+}
+
 void
 build_header(BIOSLinker *linker, GArray *table_data,
              AcpiTableHeader *h, const char *sig, int len, uint8_t rev,