x86: acpi: Turn on ACPI mode for S3
Before jumping to OS waking up vector, we need turn on ACPI mode
for S3, just like what we do for a normal boot.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stefan Roese <sr@denx.de>
diff --git a/arch/x86/lib/acpi_s3.c b/arch/x86/lib/acpi_s3.c
index e5cc3b0..0b62b75 100644
--- a/arch/x86/lib/acpi_s3.c
+++ b/arch/x86/lib/acpi_s3.c
@@ -24,6 +24,9 @@
{
void *wake_vec;
+ /* Turn on ACPI mode for S3 */
+ enter_acpi_mode(fadt->pm1a_cnt_blk);
+
wake_vec = acpi_find_wakeup_vector(fadt);
post_code(POST_OS_RESUME);