static void nvdimm_build_ssdt(GSList *device_list, GArray *table_offsets, GArray *table_data, BIOSLinker *linker, GArray *dsm_dma_arrea) { Aml *ssdt, *sb_scope, *dev; int mem_addr_offset, nvdimm_ssdt; acpi_add_table(table_offsets, table_data); ssdt = init_aml_allocator(); acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); sb_scope = aml_scope("\\_SB"); dev = aml_device("NVDR"); /* * ACPI 6.0: 9.20 NVDIMM Devices: * * The ACPI Name Space device uses _HID of ACPI0012 to identify the root * NVDIMM interface device. Platform firmware is required to contain one * such device in _SB scope if NVDIMMs support is exposed by platform to * OSPM. * For each NVDIMM present or intended to be supported by platform, * platform firmware also exposes an ACPI Namespace Device under the * root device. */ aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0012"))); nvdimm_build_common_dsm(dev); /* 0 is reserved for root device. */ nvdimm_build_device_dsm(dev, 0); nvdimm_build_nvdimm_devices(device_list, dev); aml_append(sb_scope, dev); aml_append(ssdt, sb_scope); nvdimm_ssdt = table_data->len; /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); mem_addr_offset = build_append_named_dword(table_data, NVDIMM_ACPI_MEM_ADDR); bios_linker_loader_alloc(linker, NVDIMM_DSM_MEM_FILE, dsm_dma_arrea, sizeof(NvdimmDsmIn), false /* high memory */); bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, mem_addr_offset, sizeof(uint32_t), NVDIMM_DSM_MEM_FILE, 0); build_header(linker, table_data, (void *)(table_data->data + nvdimm_ssdt), "SSDT", table_data->len - nvdimm_ssdt, 1, NULL, "NVDIMM"); free_aml_allocator(); }