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ACPI: Recover type of wakeup in acpi_is_wakeup()

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Update acpi_slp_type early in ramstage.

Change-Id: I30ec2680d28b880171217e896f48606f8691b099
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/6142
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
This commit is contained in:
Kyösti Mälkki
2014-06-19 23:29:07 +03:00
parent ef40ca57eb
commit db8693bde7
3 changed files with 18 additions and 1 deletions
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12
src/arch/x86/boot/acpi.c
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@ -645,14 +645,26 @@ void acpi_resume(void *wake_vec)
/* This is to be filled by SB code - startup value what was found. */
u8 acpi_slp_type = 0;
static void acpi_handoff_wakeup(void)
{
static int once = 0;
if (once)
return;
if (acpi_get_sleep_type)
acpi_slp_type = acpi_get_sleep_type();
once = 1;
}
int acpi_is_wakeup(void)
{
acpi_handoff_wakeup();
/* Both resume from S2 and resume from S3 restart at CPU reset */
return (acpi_slp_type == 3 || acpi_slp_type == 2);
}
int acpi_is_wakeup_s3(void)
{
acpi_handoff_wakeup();
return (acpi_slp_type == 3);
}