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ACPI: add boot option acpi=copy_dsdt to fix corrupt DSDT

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Some BIOS on Toshiba machines corrupt the DSDT, so add a new
boot option acpi=copy_dsdt to workaround it.
Add warning message to ask users to use this option if corrupt DSDT detected.

Also build a DMI blacklist to check it and automatically copy DSDT.

https://bugzilla.kernel.org/show_bug.cgi?id=14679

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Lin Ming
2010-04-08 14:34:27 +08:00
committed by Len Brown
parent 43323cb4c4
commit aa2110cb1a
4 changed files with 46 additions and 0 deletions
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drivers/acpi/bus.c
+37
View File
@@ -69,6 +69,37 @@ static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = {
};
static int set_copy_dsdt(const struct dmi_system_id *id)
{
printk(KERN_NOTICE "%s detected - "
"force copy of DSDT to local memory\n", id->ident);
acpi_gbl_copy_dsdt_locally = 1;
return 0;
}
static struct dmi_system_id dsdt_dmi_table[] __initdata = {
/*
* Insyde BIOS on some TOSHIBA machines corrupt the DSDT.
* https://bugzilla.kernel.org/show_bug.cgi?id=14679
*/
{
.callback = set_copy_dsdt,
.ident = "TOSHIBA Satellite A505",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A505"),
},
},
{
.callback = set_copy_dsdt,
.ident = "TOSHIBA Satellite L505D",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite L505D"),
},
}
};
/* --------------------------------------------------------------------------
Device Management
-------------------------------------------------------------------------- */
@@ -813,6 +844,12 @@ void __init acpi_early_init(void)
acpi_gbl_permanent_mmap = 1;
/*
* If the machine falls into the DMI check table,
* DSDT will be copied to memory
*/
dmi_check_system(dsdt_dmi_table);
status = acpi_reallocate_root_table();
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX