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| author | Markus Gaugusch <dsdt@gaugusch.at> | 2008-02-05 00:04:06 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-02-06 22:07:41 -0500 |
| commit | 71fc47a9adf8ee89e5c96a47222915c5485ac437 (patch) | |
| tree | a2eaefbb703dde933a9726eae7e6399761d40136 /drivers/acpi/Kconfig | |
| parent | 488b5ec871191359b9b79262a3d48456dae7ea5f (diff) | |
| download | op-kernel-dev-71fc47a9adf8ee89e5c96a47222915c5485ac437.zip op-kernel-dev-71fc47a9adf8ee89e5c96a47222915c5485ac437.tar.gz | |
ACPI: basic initramfs DSDT override support
The basics of DSDT from initramfs. In case this option is selected,
populate_rootfs() is called a bit earlier to have the initramfs content
available during ACPI initialization.
This is a very similar path to the one available at
http://gaugusch.at/kernel.shtml but with some update in the
documentation, default set to No and the change of populate_rootfs() the
"Jeff Mahony way" (which avoids reading the initramfs twice).
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/Kconfig')
| -rw-r--r-- | drivers/acpi/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index ccf6ea9..0442ae1 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 |
