From 0a9e72e87e573183d713fca928c75464f829e5a8 Mon Sep 17 00:00:00 2001 From: Kyösti Mälkki Date: Sun, 11 Aug 2019 01:22:28 +0300 Subject: arch/x86: Declare permanent_smi_handler() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Advertising SMI triggers in FADT is only valid if we exit with SMI installed. There has been some experiments to delay SMM installation to OS, yet there are new platforms that allow some configuration access only to be done inside SMM. Splitting static HAVE_SMI_HANDLER variable helps to manage cases where SMM might be both installed and cleared prior to entering payload. Change-Id: Iad92c4a180524e15199633693446a087787ad3a2 Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/c/coreboot/+/41910 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber Reviewed-by: Aaron Durbin Reviewed-by: Angel Pons --- src/include/acpi/acpi.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/include') diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h index ba056c094f..e6c18c28a3 100644 --- a/src/include/acpi/acpi.h +++ b/src/include/acpi/acpi.h @@ -1019,6 +1019,13 @@ int acpi_get_sleep_type(void); /* Read and clear GPE status */ int acpi_get_gpe(int gpe); +/* Once we enter payload, is SMI handler installed and capable of + responding to APM_CNT Advanced Power Management Control commands. */ +static inline int permanent_smi_handler(void) +{ + return CONFIG(HAVE_SMI_HANDLER); +} + static inline int acpi_s3_resume_allowed(void) { return CONFIG(HAVE_ACPI_RESUME); -- cgit v1.2.3