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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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1
Documentation/kernel-parameters.txt
View File

@ -151,6 +151,7 @@ and is between 256 and 4096 characters. It is defined in the file
strict -- Be less tolerant of platforms that are not
strictly ACPI specification compliant.
rsdt -- prefer RSDT over (default) XSDT
copy_dsdt -- copy DSDT to memory
See also Documentation/power/pm.txt, pci=noacpi

4
arch/x86/kernel/acpi/boot.c
View File

@ -1576,6 +1576,10 @@ static int __init parse_acpi(char *arg)
/* "acpi=noirq" disables ACPI interrupt routing */
else if (strcmp(arg, "noirq") == 0) {
acpi_noirq_set();
}
/* "acpi=copy_dsdt" copys DSDT */
else if (strcmp(arg, "copy_dsdt") == 0) {
acpi_gbl_copy_dsdt_locally = 1;
} else {
/* Core will printk when we return error. */
return -EINVAL;

4
drivers/acpi/acpica/tbutils.c
View File

@ -373,6 +373,10 @@ void acpi_tb_check_dsdt_header(void)
acpi_tb_print_table_header(0, &acpi_gbl_original_dsdt_header);
acpi_tb_print_table_header(0, acpi_gbl_DSDT);
ACPI_ERROR((AE_INFO,
"Please send DMI info to linux-acpi@vger.kernel.org\n"
"If system does not work as expected, please boot with acpi=copy_dsdt"));
/* Disable further error messages */
acpi_gbl_original_dsdt_header.length = acpi_gbl_DSDT->length;

37
drivers/acpi/bus.c
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