If global NVS says internal UART is not enabled, hide it in the ASL
code so that OS won't see it.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
arch/x86/include/asm/arch-baytrail/acpi/lpc.asl | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/arch/x86/include/asm/arch-baytrail/acpi/lpc.asl
b/arch/x86/include/asm/arch-baytrail/acpi/lpc.asl
index 22f0d68..fe34d32 100644
--- a/arch/x86/include/asm/arch-baytrail/acpi/lpc.asl
+++ b/arch/x86/include/asm/arch-baytrail/acpi/lpc.asl
@@ -119,17 +119,14 @@ Device (LPCB)
Method(_STA, 0, Serialized)
{
- /*
- * TODO:
- *
- * Need to hide the internal UART depending on whether
- * internal UART is enabled or not so that external
- * SuperIO UART can be exposed to system.
- */
- Store(1, UI3E)
- Store(1, UI4E)
- Store(1, C1EN)
- Return (STA_VISIBLE)
+ If (LEqual(IURE, 1)) {
+ Store(1, UI3E)
+ Store(1, UI4E)
+ Store(1, C1EN)
+ Return (STA_VISIBLE)
+ } Else {
+ Return (STA_MISSING)
+ }
}
--
2.7.4
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