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-rw-r--r--hw/acpi/aml-build.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 36a6cc450e..3fef5f6abf 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -258,6 +258,22 @@ static void build_append_int(GArray *table, uint64_t value)
}
}
+/* Generic Address Structure (GAS)
+ * ACPI 2.0/3.0: 5.2.3.1 Generic Address Structure
+ * 2.0 compat note:
+ * @access_width must be 0, see ACPI 2.0:Table 5-1
+ */
+void build_append_gas(GArray *table, AmlAddressSpace as,
+ uint8_t bit_width, uint8_t bit_offset,
+ uint8_t access_width, uint64_t address)
+{
+ build_append_int_noprefix(table, as, 1);
+ build_append_int_noprefix(table, bit_width, 1);
+ build_append_int_noprefix(table, bit_offset, 1);
+ build_append_int_noprefix(table, access_width, 1);
+ build_append_int_noprefix(table, address, 8);
+}
+
/*
* Build NAME(XXXX, 0x00000000) where 0x00000000 is encoded as a dword,
* and return the offset to 0x00000000 for runtime patching.