arm64: Add support for gic initialization through ACPI

In systems with ACPI support and when a DT is not provided, we can use
the MADTs to figure out if it implements a GICv2 or a GICv3 and
discover

arm64: Add support for gic initialization through ACPI

In systems with ACPI support and when a DT is not provided, we can use
the MADTs to figure out if it implements a GICv2 or a GICv3 and
discover the GIC parameters. This change implements this but retains
the default behavior; we check if a valid DT is provided, if not, we
try to discover the cores in the system using ACPI.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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arm64: Add support for cpu initialization through ACPI

In systems with ACPI support and when a DT is not provided, we can use
the MADTs to discover the number of CPUs and their corresponding MIDR.
T

arm64: Add support for cpu initialization through ACPI

In systems with ACPI support and when a DT is not provided, we can use
the MADTs to discover the number of CPUs and their corresponding MIDR.
This change implements this but retains the default behavior; we check
if a valid DT is provided, if not, we try to discover the cores in the
system using ACPI.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib/acpi: Extend the definition of the FADT table

This change add more fields in the APCI table FADT to allow for the
discovery of the PSCI conduit in arm64 systems. The definition for
FADT is simil

lib/acpi: Extend the definition of the FADT table

This change add more fields in the APCI table FADT to allow for the
discovery of the PSCI conduit in arm64 systems. The definition for
FADT is similar to the one in include/acpi/actbl.h in Linux.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib/acpi: Add support for the XSDT table

XSDT provides pointers to other ACPI tables much like RSDT. However,
contrary to RSDT that provides 32-bit addresses, XSDT provides 64-bit
pointers. ACPI req

lib/acpi: Add support for the XSDT table

XSDT provides pointers to other ACPI tables much like RSDT. However,
contrary to RSDT that provides 32-bit addresses, XSDT provides 64-bit
pointers. ACPI requires that if XSDT is valid then it takes precedence
over RSDT.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Andrew Jones <andrew.jones@linux.dev>
[ Alex E: Use flexible array member for XSDT struct ]
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib/acpi: Convert table names to Linux style

kvm-unit-tests is about to import several table struct definitions from
Linux, convert the names of the existing tables to follow the Linux style.

This

lib/acpi: Convert table names to Linux style

kvm-unit-tests is about to import several table struct definitions from
Linux, convert the names of the existing tables to follow the Linux style.

This is purely a cosmetic change and no functional change is intended.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib: Fix style for acpi.{c,h}

Manually fix style issues to make the files consistent with the kernel
coding style.

Zero-length array members have been replaced with flexible array members
(for deta

lib: Fix style for acpi.{c,h}

Manually fix style issues to make the files consistent with the kernel
coding style.

Zero-length array members have been replaced with flexible array members
(for details about the motivation, consult
Documentation/process/deprecated.rst in the Linux tree, the section about
zero-length and one-element arrays).

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
[ Alex E: changes other than indentation ]
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib: Apply Lindent to acpi.{c,h}

The change was done by modifying Linux's scripts/Lindent to use 100
columns instead of 80.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Sha

lib: Apply Lindent to acpi.{c,h}

The change was done by modifying Linux's scripts/Lindent to use 100
columns instead of 80.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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lib: Move acpi header and implementation to lib

Move acpi.h to lib to make it available for other architectures.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Shaoqin Huang

lib: Move acpi header and implementation to lib

Move acpi.h to lib to make it available for other architectures.

Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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arm/arm64: MAINTAINERS: Drop deprecated list

The list has been dead long enough for everyone to learn it's dead,
but it's still in MAINTAINERS, which means get_maintainer will keep
adding to patch s

arm/arm64: MAINTAINERS: Drop deprecated list

The list has been dead long enough for everyone to learn it's dead,
but it's still in MAINTAINERS, which means get_maintainer will keep
adding to patch submissions. Time to drop it.

Signed-off-by: Andrew Jones <andrew.jones@linux.dev>

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