From 4496d1d3ebe998f94dfd7b47a22c1522da61dfa4 Mon Sep 17 00:00:00 2001 From: Miguel Luis Date: Tue, 11 Oct 2022 18:17:28 +0000 Subject: [PATCH] acpi: fadt: support revision 6.0 of the ACPI specification Update the Fixed ACPI Description Table (FADT) to revision 6.0 of the ACPI specification adding the field "Hypervisor Vendor Identity". This field's description states the following: "64-bit identifier of hypervisor vendor. All bytes in this field are considered part of the vendor identity. These identifiers are defined independently by the vendors themselves, usually following the name of the hypervisor product. Version information should NOT be included in this field - this shall simply denote the vendor's name or identifier. Version information can be communicated through a supplemental vendor-specific hypervisor API. Firmware implementers would place zero bytes into this field, denoting that no hypervisor is present in the actual firmware." Signed-off-by: Miguel Luis Reviewed-by: Ani Sinha Message-Id: <20221011181730.10885-3-miguel.luis@oracle.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/acpi/aml-build.c | 13 ++++++++++--- hw/arm/virt-acpi-build.c | 10 +++++----- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index e6bfac95c7..42feb4d4d7 100644 --- a/hw/acpi/aml-build.c +++ b/hw/acpi/aml-build.c @@ -2070,7 +2070,7 @@ void build_pptt(GArray *table_data, BIOSLinker *linker, MachineState *ms, acpi_table_end(linker, &table); } -/* build rev1/rev3/rev5.1 FADT */ +/* build rev1/rev3/rev5.1/rev6.0 FADT */ void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f, const char *oem_id, const char *oem_table_id) { @@ -2193,8 +2193,15 @@ void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f, /* SLEEP_STATUS_REG */ build_append_gas_from_struct(tbl, &f->sleep_sts); - /* TODO: extra fields need to be added to support revisions above rev5 */ - assert(f->rev == 5); + if (f->rev == 5) { + goto done; + } + + /* Hypervisor Vendor Identity */ + build_append_padded_str(tbl, "QEMU", 8, '\0'); + + /* TODO: extra fields need to be added to support revisions above rev6 */ + assert(f->rev == 6); done: acpi_table_end(linker, &table); diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 13c6e3e468..e5377744f3 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -808,13 +808,13 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) } /* FADT */ -static void build_fadt_rev5(GArray *table_data, BIOSLinker *linker, +static void build_fadt_rev6(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms, unsigned dsdt_tbl_offset) { - /* ACPI v5.1 */ + /* ACPI v6.0 */ AcpiFadtData fadt = { - .rev = 5, - .minor_ver = 1, + .rev = 6, + .minor_ver = 0, .flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI, .xdsdt_tbl_offset = &dsdt_tbl_offset, }; @@ -944,7 +944,7 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) /* FADT MADT PPTT GTDT MCFG SPCR DBG2 pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); - build_fadt_rev5(tables_blob, tables->linker, vms, dsdt); + build_fadt_rev6(tables_blob, tables->linker, vms, dsdt); acpi_add_table(table_offsets, tables_blob); build_madt(tables_blob, tables->linker, vms);