[U-Boot,19/22] x86: acpi: Turn on ACPI mode for S3

Submitted by Bin Meng on March 16, 2017, 2:26 p.m.

Details

Message ID 1489674408-17498-20-git-send-email-bmeng.cn@gmail.com
State New
Delegated to: Bin Meng
Headers show

Commit Message

Bin Meng March 16, 2017, 2:26 p.m.
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>
---

 arch/x86/lib/acpi_s3.c | 3 +++
 1 file changed, 3 insertions(+)

Comments

Simon Glass March 21, 2017, 8:07 p.m.
On 16 March 2017 at 08:26, Bin Meng <bmeng.cn@gmail.com> wrote:
> 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>
> ---
>
>  arch/x86/lib/acpi_s3.c | 3 +++
>  1 file changed, 3 insertions(+)

Reviewed-by: Simon Glass <sjg@chromium.org>


>
> 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 acpi_resume(struct acpi_fadt *fadt)
>  {
>         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);
> --
> 2.9.2
>

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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 acpi_resume(struct acpi_fadt *fadt)
 {
 	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);