mirror of
https://github.com/Fishwaldo/u-boot.git
synced 2025-03-18 13:11:31 +00:00
x86: acpi: Don't touch hardware on HW reduced platforms
If ACPI HW reduced bit in FADT is set we should ignore any ACPI hardware communications. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
parent
ace7762b28
commit
382fabb297
1 changed files with 4 additions and 0 deletions
|
@ -463,6 +463,10 @@ ulong write_acpi_tables(ulong start)
|
|||
|
||||
debug("ACPI: done\n");
|
||||
|
||||
/* Don't touch ACPI hardware on HW reduced platforms */
|
||||
if (fadt->flags & ACPI_FADT_HW_REDUCED_ACPI)
|
||||
return current;
|
||||
|
||||
/*
|
||||
* Other than waiting for OSPM to request us to switch to ACPI mode,
|
||||
* do it by ourselves, since SMI will not be triggered.
|
||||
|
|
Loading…
Add table
Reference in a new issue