hw/arm/virt-acpi-build: Generate RSDP table
RSDP points to RSDT which in turn points to other tables. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1432522520-8068-13-git-send-email-zhaoshenglong@huawei.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -151,6 +151,35 @@ static void acpi_dsdt_add_virtio(Aml *scope,
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}
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}
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/* RSDP */
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static GArray *
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build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
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{
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AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
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bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
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true /* fseg memory */);
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memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));
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memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));
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rsdp->length = cpu_to_le32(sizeof(*rsdp));
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rsdp->revision = 0x02;
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/* Point to RSDT */
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rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
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/* Address to be filled by Guest linker */
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bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
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ACPI_BUILD_TABLE_FILE,
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rsdp_table, &rsdp->rsdt_physical_address,
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sizeof rsdp->rsdt_physical_address);
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rsdp->checksum = 0;
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/* Checksum to be filled by Guest linker */
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bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
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rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
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return rsdp_table;
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}
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/* GTDT */
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static void
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build_gtdt(GArray *table_data, GArray *linker)
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@ -285,7 +314,7 @@ static
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void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
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{
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GArray *table_offsets;
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unsigned dsdt;
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unsigned dsdt, rsdt;
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VirtAcpiCpuInfo cpuinfo;
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GArray *tables_blob = tables->table_data;
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@ -322,8 +351,12 @@ void virt_acpi_build(VirtGuestInfo *guest_info, AcpiBuildTables *tables)
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build_gtdt(tables_blob, tables->linker);
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/* RSDT is pointed to by RSDP */
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rsdt = tables_blob->len;
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build_rsdt(tables_blob, tables->linker, table_offsets);
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/* RSDP is in FSEG memory, so allocate it separately */
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build_rsdp(tables->rsdp, tables->linker, rsdt);
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/* Cleanup memory that's no longer used. */
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g_array_free(table_offsets, true);
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}
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