mainboard/google/kahlee: Disable Bayhub part on board_id 0

The Bayhub part is not used on proto with board_id 0, so disable it.

BUG=b:74248569
TEST=Build & boot Grunt.  Bayhub part is disabled.

Change-Id: I635356d41bab637726594d403d66dde730f12256
Signed-off-by: Martin Roth <martinroth@chromium.org>
Reviewed-on: https://review.coreboot.org/25015
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Justin TerAvest <teravest@chromium.org>

src/mainboard/google/kahlee/variants/baseboard/OemCustomize.c

@@ -15,6 +15,7 @@
 
 #include <amdblocks/agesawrapper.h>
 #include <variant/gpio.h>
+#include <boardid.h>
 
 static const PCIe_PORT_DESCRIPTOR PortList[] = {
 	/* Initialize Port descriptor (PCIe port, Lanes 7:4, D2F1) for NC*/
@@ -127,6 +128,98 @@ static const PCIe_COMPLEX_DESCRIPTOR PcieComplex = {
 	.DdiLinkList  = (void *)DdiList
 };
 
+/*
+ * TODO: Remove after we're done with Grunt Proto
+ */
+static const PCIe_PORT_DESCRIPTOR PortListNoBayhub[] = {
+	/* Initialize Port descriptor (PCIe port, Lanes 7:4, D2F1) for NC*/
+	{
+		0,
+		PCIE_ENGINE_DATA_INITIALIZER(PcieUnusedEngine, 4, 7),
+		PCIE_PORT_DATA_INITIALIZER_V2(
+				PortDisabled,		/* mPortPresent */
+				ChannelTypeExt6db,	/* mChannelType */
+				2,			/* mDevAddress */
+				1,			/* mDevFunction */
+				HotplugDisabled,	/* mHotplug */
+				PcieGenMaxSupported,	/* mMaxLinkSpeed */
+				PcieGenMaxSupported,	/* mMaxLinkCap */
+				AspmL0sL1,		/* mAspm */
+				0,			/* mResetId */
+				0)			/* mClkPmSupport */
+	},
+	/* Initialize Port descriptor (PCIe port, Lanes 0:0, D2F2) for WLAN */
+	{
+		0,
+		PCIE_ENGINE_DATA_INITIALIZER(PciePortEngine, 0, 0),
+		PCIE_PORT_DATA_INITIALIZER_V2(
+				PortEnabled,		/* mPortPresent */
+				ChannelTypeExt6db,	/* mChannelType */
+				2,			/* mDevAddress */
+				2,			/* mDevFunction */
+				HotplugDisabled,	/* mHotplug */
+				PcieGenMaxSupported,	/* mMaxLinkSpeed */
+				PcieGenMaxSupported,	/* mMaxLinkCap */
+				AspmL0sL1,		/* mAspm */
+				PCIE_0_RST,		/* mResetId */
+				0)			/* mClkPmSupport */
+	},
+	/* Init Port descriptor (PCIe port, Lanes 1:1, D2F3) NC */
+	{
+		0,
+		PCIE_ENGINE_DATA_INITIALIZER(PcieUnusedEngine, 1, 1),
+		PCIE_PORT_DATA_INITIALIZER_V2(
+				PortDisabled,		/* mPortPresent */
+				ChannelTypeExt6db,	/* mChannelType */
+				2,			/* mDevAddress */
+				3,			/* mDevFunction */
+				HotplugDisabled,	/* mHotplug */
+				PcieGenMaxSupported,	/* mMaxLinkSpeed */
+				PcieGenMaxSupported,	/* mMaxLinkCap */
+				AspmL0sL1,		/* mAspm */
+				PCIE_1_RST,		/* mResetId */
+				0)			/* mClkPmSupport */
+	},
+	/* Initialize Port descriptor (PCIe port, Lane 2, D2F4) for EMMC */
+	{
+		0,
+		PCIE_ENGINE_DATA_INITIALIZER(PcieUnusedEngine, 2, 2),
+		PCIE_PORT_DATA_INITIALIZER_V2(
+				PortDisabled,		/* mPortPresent */
+				ChannelTypeExt6db,	/* mChannelType */
+				2,			/* mDevAddress */
+				4,			/* mDevFunction */
+				HotplugDisabled,	/* mHotplug */
+				PcieGenMaxSupported,	/* mMaxLinkSpeed */
+				PcieGenMaxSupported,	/* mMaxLinkCap */
+				AspmL0sL1,		/* mAspm */
+				PCIE_2_RST,		/* mResetId */
+				0)			/* mClkPmSupport */
+	},
+	/* Initialize Port descriptor (PCIe port, Lane3, D2F5) for NC */
+	{
+		DESCRIPTOR_TERMINATE_LIST,
+		PCIE_ENGINE_DATA_INITIALIZER(PcieUnusedEngine, 3, 3),
+		PCIE_PORT_DATA_INITIALIZER_V2(
+				PortDisabled,		/* mPortPresent */
+				ChannelTypeExt6db,	/* mChannelType */
+				2,			/* mDevAddress */
+				5,			/* mDevFunction */
+				HotplugDisabled,	/* mHotplug */
+				PcieGenMaxSupported,	/* mMaxLinkSpeed */
+				PcieGenMaxSupported,	/* mMaxLinkCap */
+				AspmL0sL1,		/* mAspm */
+				PCIE_3_RST,		/* mResetId */
+				0)			/* mClkPmSupport */
+	},
+};
+static const PCIe_COMPLEX_DESCRIPTOR PcieNoBayhub = {
+	.Flags        = DESCRIPTOR_TERMINATE_LIST,
+	.SocketId     = 0,
+	.PciePortList = (void *)PortListNoBayhub,
+	.DdiLinkList  = (void *)DdiList
+};
+
 /*---------------------------------------------------------------------------*/
 /**
  *  OemCustomizeInitEarly
@@ -148,4 +241,10 @@ VOID __attribute__((weak)) OemCustomizeInitEarly(IN OUT AMD_EARLY_PARAMS *InitEa
 	InitEarly->GnbConfig.PcieComplexList = (void *)&PcieComplex;
 	InitEarly->PlatformConfig.GnbAzI2sBusSelect = GnbAcpI2sBus;
 	InitEarly->PlatformConfig.GnbAzI2sBusPinConfig = GnbAcp2Tx4RxBluetooth;
+
+	/* Completely disable Bayhub EMMC bridge on Proto with board_id 0 */
+	/* Todo: Remove when we're done with Proto */
+	if (board_id() == 0)
+		InitEarly->GnbConfig.PcieComplexList = (void *)&PcieNoBayhub;
+
 }