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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-04-10 16:03:50 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-05-10 22:04:23 +0300 |
| commit | cb51ac2ffe3649eb8f5c65dccc2012f0ba2c6b12 (patch) | |
| tree | ef8a06d6fc7f4c9fc4f1c3c606c3fcff4e7b18ad /include/hw/acpi | |
| parent | 5ee8534731645551a3883210b9a8d5741bb79df2 (diff) | |
| download | qemu-cb51ac2ffe3649eb8f5c65dccc2012f0ba2c6b12.zip qemu-cb51ac2ffe3649eb8f5c65dccc2012f0ba2c6b12.tar.gz qemu-cb51ac2ffe3649eb8f5c65dccc2012f0ba2c6b12.tar.bz2 | |
hw/arm/virt: generate 64-bit addressable ACPI objects
Our current ACPI table generation code limits the placement of ACPI
tables to 32-bit addressable memory, in order to be able to emit the
root pointer (RSDP) and root table (RSDT) using table types from the
ACPI 1.0 days.
Since ARM was not supported by ACPI before version 5.0, it makes sense
to lift this restriction. This is not crucial for mach-virt, which is
guaranteed to have some memory available below the 4 GB mark, but it
is a nice to have for QEMU machines that do not have any 32-bit
addressable memory, which is not uncommon for real world 64-bit ARM
systems.
Since we already emit a version of the RSDP root pointer that has a
secondary 64-bit wide address field for the 64-bit root table (XSDT),
all we need to do is replace the RSDT generation with the generation
of an XSDT table, and use a different slot in the FADT table to refer
to the DSDT.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/hw/acpi')
| -rw-r--r-- | include/hw/acpi/acpi-defs.h | 11 | ||||
| -rw-r--r-- | include/hw/acpi/aml-build.h | 3 |
2 files changed, 14 insertions, 0 deletions
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index 93e1eba..91bae7f 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -233,6 +233,17 @@ struct AcpiRsdtDescriptorRev1 typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1; /* + * ACPI 2.0 eXtended System Description Table (XSDT) + */ +struct AcpiXsdtDescriptorRev2 +{ + ACPI_TABLE_HEADER_DEF /* ACPI common table header */ + uint64_t table_offset_entry[0]; /* Array of pointers to other */ + /* ACPI tables */ +} QEMU_PACKED; +typedef struct AcpiXsdtDescriptorRev2 AcpiXsdtDescriptorRev2; + +/* * ACPI 1.0 Firmware ACPI Control Structure (FACS) */ struct AcpiFacsDescriptorRev1 diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index 00c21f1..eb07c2d 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -381,6 +381,9 @@ void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre); void build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, const char *oem_id, const char *oem_table_id); +void +build_xsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets, + const char *oem_id, const char *oem_table_id); int build_append_named_dword(GArray *array, const char *name_format, ...) |