Some Atom SoCs use SWSMISCI for SMI control. Add a Kconfig to select this. It is used on Apollo Lake.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/Kconfig | 6 ++++++ arch/x86/cpu/apollolake/Kconfig | 1 + 2 files changed, 7 insertions(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 7062384780b..de68bf9fe14 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1005,4 +1005,10 @@ config INTEL_GENERIC_WIFI network functionality. It is only here to generate the ACPI tables required by Linux.
+config INTEL_GMA_SWSMISCI + bool + help + Select this option for Atom-based platforms which use the SWSMISCI + register (0xe0) rather than the SWSCI register (0xe8). + endmenu diff --git a/arch/x86/cpu/apollolake/Kconfig b/arch/x86/cpu/apollolake/Kconfig index 319f12684b7..35a425cd1bc 100644 --- a/arch/x86/cpu/apollolake/Kconfig +++ b/arch/x86/cpu/apollolake/Kconfig @@ -17,6 +17,7 @@ config INTEL_APOLLOLAKE select PCH_SUPPORT select P2SB select SMP_AP_WORK + select INTEL_GMA_SWSMISCI select ACPI_GNVS_EXTERNAL imply ENABLE_MRC_CACHE imply AHCI_PCI