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x86: Support Atom SoCs using SWSMISCI rather than the SWSCI

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>
Simon Glass 3 years ago
parent
commit
b98b91b6a9
2 changed files with 7 additions and 0 deletions
  1. 6 0
      arch/x86/Kconfig
  2. 1 0
      arch/x86/cpu/apollolake/Kconfig

+ 6 - 0
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

+ 1 - 0
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