According to ACPI spec, DefBuffer can take two parameters: BufferSize
and ByteList. Make it consistent with the spec. Uninitialized buffer
could be requested by passing ByteList as NULL to reserve space.
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id:
1432522520-8068-15-git-send-email-zhaoshenglong@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
return var;
}
-/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefBuffer */
-Aml *aml_buffer(void)
+/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefBuffer
+ * Pass byte_list as NULL to request uninitialized buffer to reserve space.
+ */
+Aml *aml_buffer(int buffer_size, uint8_t *byte_list)
{
+ int i;
Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER);
+
+ for (i = 0; i < buffer_size; i++) {
+ if (byte_list == NULL) {
+ build_append_byte(var->buf, 0x0);
+ } else {
+ build_append_byte(var->buf, byte_list[i]);
+ }
+ }
+
return var;
}
Aml *aml_method(const char *name, int arg_count);
Aml *aml_if(Aml *predicate);
Aml *aml_package(uint8_t num_elements);
-Aml *aml_buffer(void);
+Aml *aml_buffer(int buffer_size, uint8_t *byte_list);
Aml *aml_resource_template(void);
Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule);
Aml *aml_varpackage(uint32_t num_elements);