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-rw-r--r--drivers/acpi/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index ccf6ea95f68c..0442ae153a24 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -274,6 +274,23 @@ config ACPI_CUSTOM_DSDT_FILE
Enter the full path name to the file which includes the AmlCode
declaration.
+config ACPI_CUSTOM_DSDT_INITRD
+ bool "Read Custom DSDT from initramfs"
+ depends on BLK_DEV_INITRD
+ default n
+ help
+ The DSDT (Differentiated System Description Table) often needs to be
+ overridden because of broken BIOS implementations. If this feature is
+ activated you will be able to provide a customized DSDT by adding it
+ to your initramfs. If your mkinitrd tool does not support this feature
+ a script is provided in the documentation. For more details see
+ <file:Documentation/dsdt-initrd.txt> or <http://gaugusch.at/kernel.shtml>.
+ If there is no table found, it will fall-back to the custom DSDT
+ in-kernel (if activated) or to the DSDT from the BIOS.
+
+ Even if you do not need a new one at the moment, you may want to use a
+ better DSDT later. It is safe to say Y here.
+
config ACPI_BLACKLIST_YEAR
int "Disable ACPI for systems before Jan 1st this year" if X86_32
default 0