From 05af850b281f203de4bcf87e7864eaef78d2bff4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= <kyosti.malkki@gmail.com>
Date: Wed, 3 Feb 2021 14:37:35 +0200
Subject: sb/amd/cimx/sb800: Move common OSFL method in ASL
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We deal with mb/lippert/frontrunner-af later since it currently
does not include <cimx/sb800/acpi/fch.asl>.

Change-Id: I30b611fc1fb01777223d7222adc96308a247a35c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50591
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/southbridge/amd/cimx/sb800/acpi/fch.asl | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'src/southbridge/amd/cimx/sb800')

diff --git a/src/southbridge/amd/cimx/sb800/acpi/fch.asl b/src/southbridge/amd/cimx/sb800/acpi/fch.asl
index 59b556b5b0..ee9b125f2b 100644
--- a/src/southbridge/amd/cimx/sb800/acpi/fch.asl
+++ b/src/southbridge/amd/cimx/sb800/acpi/fch.asl
@@ -134,6 +134,30 @@ Method(_CRS, 0) {
 	Return (CRES) /* note to change the Name buffer */
 } /* end of Method(_SB.PCI0._CRS) */
 
+/* Some global data */
+Name(OSVR, 3)  /* Assume nothing. WinXp = 1, Vista = 2, Linux = 3, WinCE = 4 */
+
+Method(OSFL, 0){
+
+	if (OSVR != Ones) {Return (OSVR)}	/* OS version was already detected */
+
+	if(CondRefOf(\_OSI))
+	{
+		OSVR = 1				/* Assume some form of XP */
+		if (\_OSI("Windows 2006"))		/* Vista */
+		{
+			OSVR = 2
+		}
+	} else {
+		If (WCMP(\_OS,"Linux")) {
+			OSVR = 3			/* Linux */
+		} Else {
+			OSVR = 4			/* Gotta be WinCE */
+		}
+	}
+	Return(OSVR)
+}
+
 /*
 *
 *               FIRST METHOD CALLED UPON BOOT
-- 
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