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Add a "quirks" value to disable quirks handling for a given boot.

Browse source 
Also, disable quirks if booting with a custom DSDT.  Add a quirk
to disable loading ACPI so known bad systems can be completely
blacklisted.
This commit is contained in:
Nate Lawson 2004-03-04 04:42:59 +00:00
parent c203da27d5
commit 4e376d58dc
2 changed files with 20 additions and 5 deletions
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5
share/man/man4/acpi.4
View file

@ -266,6 +266,11 @@ typically as a child of a PCI bus.
.Pq Vt device
Supports an ACPI laptop lid switch, which typically puts a
system to sleep.
.It Li quirks
.Pq Vt feature
Don't honor quirks.
Quirks automatically disable ACPI functionality based on the XSDT table's
OEM vendor name and revision date.
.It Li pci
.Pq Vt device
Supports Host to PCI bridges.

20
sys/dev/acpica/acpi.c
View file

@ -262,6 +262,8 @@ acpi_Startup(void)
/* Set up any quirks we have for this XSDT. */
acpi_quirks_set();
if (acpi_disabled("acpi"))
return_VALUE (AE_ERROR);
return_VALUE (AE_OK);
}
@ -283,9 +285,6 @@ acpi_identify(driver_t *driver, device_t parent)
if (resource_disabled("acpi", 0))
return_VOID;
snprintf(acpi_ca_version, sizeof(acpi_ca_version), "0x%x",
ACPI_CA_VERSION);
/* Make sure we're not being doubly invoked. */
if (device_find_child(parent, "acpi", 0) != NULL)
return_VOID;
@ -294,6 +293,8 @@ acpi_identify(driver_t *driver, device_t parent)
if (ACPI_FAILURE(acpi_Startup()))
return_VOID;
snprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
/* Attach the actual ACPI device. */
if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
device_printf(parent, "ACPI: could not attach\n");
@ -583,10 +584,19 @@ acpi_quirks_set()
char *env, *tmp;
int len;
/* If the user specifies "noquirks", leave the settings alone. */
/*
* If the user loaded a custom table or disabled "quirks", leave
* the settings alone.
*/
len = 0;
if ((env = getenv("acpi_dsdt_load")) != NULL) {
/* XXX No strcasecmp but this is good enough. */
if (*env == 'Y' || *env == 'y')
goto out;
freeenv(env);
}
if ((env = getenv("debug.acpi.disabled")) != NULL) {
if (strstr("noquirks", env) != NULL)
if (strstr("quirks", env) != NULL)
goto out;
len = strlen(env);
}