hcl-x64.config: Set CONFIG_ACPI=y

The wakeup mailbox that the virtual firmware implements to boot secondary
CPUs is defined in the ACPI specification (see version 6.6 section
5.2.12.19). The code in the kernel that makes use of the mailbox resides
in the x86 ACPI subsystem. CONFIG_ACPI needs to be set as 'y' to select it.

The option CONFIG_ACPI selects or enables many other configuration options
which in turn select more options that are not used with DeviceTree-based
firmware. Unselect all the options that have a menuconfig prompt.

The newly selected code remains dormant if the acpi=off is specified in the
kernel command line. The code that interacts with the mailbox remains
usable for DeviceTree platform firmware.

These are the options that are selected after running `make olddefconfig`
with this changeset:

 * CONFIG_ACPI_MADT_WAKEUP=y
   Enables the wakeup mailbox.

 * CONFIG_ACPI_LPIT
   Support for ACPI low-power idle table (not used with DeviceTree FW).

 * CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y
   Tweaks ACPI root table lookup (not used with DeviceTree FW).

 * CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y
 * CONFIG_ARCH_HAS_ACPI_TABLE_UPGRADE=y
   Architecture capabilities (unused).

 * CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
   Support for ACPI-based suspend/resume (not used with DeviceTree FW).

 * CONFIG_ACPI_HOTPLUG_IOAPIC=y
   Support for IO-APIC hotplug (not used with DeviceTree FW).

 * CONFIG_HAVE_ACPI_APEI=y
 * CONFIG_HAVE_ACPI_APEI_NMI=y
   Architecture capabilities (not used as CONFIG_ACPI_APEI=n).

 * CONFIG_PCI_LABEL=y
   ACPI-provided PCI naming facilities (not used with DeviceTree FW).

 * CONFIG_PNP=y
 * CONFIG_PNPACPI=y
   Support only. Does not add drivers.

 * CONFIG_FIRMWARE_TABLE=y
   Library for parsing ACPI tables.

Signed-off-by: Ricardo Neri <[email protected]>

Author: ricardon

Microsoft/hcl-x64.config

@@ -354,6 +354,7 @@ CONFIG_X86_DIRECT_GBPAGES=y
 # CONFIG_AMD_MEM_ENCRYPT is not set
 CONFIG_NUMA=y
 CONFIG_AMD_NUMA=y
+# CONFIG_X86_64_ACPI_NUMA is not set
 CONFIG_NODES_SHIFT=6
 CONFIG_ARCH_SPARSEMEM_ENABLE=y
 CONFIG_ARCH_SPARSEMEM_DEFAULT=y
@@ -433,7 +434,33 @@ CONFIG_ARCH_HAS_ADD_PAGES=y
 # CONFIG_SUSPEND is not set
 # CONFIG_PM is not set
 CONFIG_ARCH_SUPPORTS_ACPI=y
-# CONFIG_ACPI is not set
+CONFIG_ACPI=y
+# CONFIG_ACPI_DEBUGGER is not set
+# CONFIG_ACPI_SPCR_TABLE is not set
+# CONFIG_ACPI_FPDT is not set
+# CONFIG_ACPI_REV_OVERRIDE_POSSIBLE is not set
+# CONFIG_ACPI_EC_DEBUGFS is not set
+# CONFIG_ACPI_AC is not set
+# CONFIG_ACPI_BATTERY is not set
+# CONFIG_ACPI_TINY_POWER_BUTTON is not set
+# CONFIG_ACPI_DOCK is not set
+# CONFIG_ACPI_PROCESSOR is not set
+# CONFIG_ACPI_TABLE_UPGRADE is not set
+# CONFIG_ACPI_DEBUG is not set
+# CONFIG_ACPI_PCI_SLOT is not set
+# CONFIG_ACPI_CONTAINER is not set
+# CONFIG_ACPI_HOTPLUG_MEMORY is not set
+# CONFIG_ACPI_SBS is not set
+# CONFIG_ACPI_HED is not set
+# CONFIG_ACPI_REDUCED_HARDWARE_ONLY is not set
+# CONFIG_ACPI_NFIT is not set
+# CONFIG_ACPI_APEI is not set
+# CONFIG_ACPI_DPTF is not set
+# CONFIG_ACPI_CONFIGFS is not set
+# CONFIG_ACPI_PFRUT is not set
+# CONFIG_ACPI_FFH is not set
+# CONFIG_PMIC_OPREGION is not set
+# CONFIG_X86_PM_TIMER is not set
 
 #
 # CPU Frequency scaling
@@ -452,6 +479,7 @@ CONFIG_ARCH_SUPPORTS_ACPI=y
 # Bus options (PCI etc.)
 #
 CONFIG_PCI_DIRECT=y
+# CONFIG_PCI_MMCONFIG is not set
 # CONFIG_PCI_CNB20LE_QUIRK is not set
 # CONFIG_ISA_BUS is not set
 # CONFIG_ISA_DMA_API is not set
@@ -1230,6 +1258,7 @@ CONFIG_LDISC_AUTOLOAD=y
 CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
+# CONFIG_SERIAL_8250_PNP is not set
 CONFIG_SERIAL_8250_16550A_VARIANTS=y
 # CONFIG_SERIAL_8250_FINTEK is not set
 CONFIG_SERIAL_8250_CONSOLE=y