Patch by scgtrp (Mike Smith) to copy DSDT to memory, as some machines corrupt DSDT after boot. This fixes bug #8043.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42895 a95241bf-73f2-0310-859d-f6bbb57e9c96

data/settings/kernel/drivers/kernel

@@ -64,6 +64,10 @@ load_symbols true
 	# Avoids running _INI and _STA methods and final object initialization,
 	# which may be used to for debugging ACPI issues, false by default
 
+#acpi_copy_dsdt true
+	# Makes a copy of the DSDT during boot, to work around BIOSes that
+	# corrupt it, false by default
+
 #disable_ioapic true
 	# Disables IO-APIC support, enabled by default
 

src/add-ons/kernel/bus_managers/acpi/acpi_busman.c

@@ -97,6 +97,8 @@ acpi_std_ops(int32 op,...)
 					true, true);
 				acpiAvoidFullInit = get_driver_boolean_parameter(settings,
 					"acpi_avoid_full_init", false, false);
+				AcpiGbl_CopyDsdtLocally = get_driver_boolean_parameter(settings,
+					"acpi_copy_dsdt", false, false);
 				unload_driver_settings(settings);
 			}