[PATCH v3 30/57] x86: Support Atom SoCs using SWSMISCI rather than the SWSCI

Simon Glass
2020-09-06T21:43:38Z

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>
---

(no changes since v1)

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 495629d32ed..eddf2a774ef 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1017,4 +1017,10 @@ 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
--
2.28.0.526.ge36021eeef-goog