1 files changed, 173 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/include/asm/arch-apollolake/acpi/scs.asl b/roms/u-boot/arch/x86/include/asm/arch-apollolake/acpi/scs.asl
new file mode 100644
index 000000000..7d61861ea
--- /dev/null
+++ b/roms/u-boot/arch/x86/include/asm/arch-apollolake/acpi/scs.asl
@@ -0,0 +1,173 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2016 Intel Corporation.
+ */
+
+Scope (\_SB.PCI0) {
+	/* 0xD6- is the port address */
+	/* 0x600- is the dynamic clock gating control register offset (GENR) */
+	OperationRegion (SBMM, SystemMemory,
+		Or ( Or (IOMAP_P2SB_BAR,
+			ShiftLeft(0xD6, PCR_PORTID_SHIFT)), 0x0600), 0x18)
+	Field (SBMM, DWordAcc, NoLock, Preserve)
+	{
+		GENR, 32,
+		Offset (0x08),
+		,  5, /* bit[5] represents Force Card Detect SD Card */
+		GRR3,  1, /* GPPRVRW3 for SD Card detect Bypass. It's active high */
+	}
+
+	/* SCC power gate control method, this method must be serialized as
+	 * multiple device will control the GENR register
+	 *
+	 * Arguments: (2)
+	 * Arg0: 0-AND  1-OR
+	 * Arg1: Value
+	 */
+	Method (SCPG, 2, Serialized)
+	{
+		if (LEqual(Arg0, 0x1)) {
+			Or (^GENR, Arg1, ^GENR)
+		} ElseIf (LEqual(Arg0, 0x0)){
+			And (^GENR, Arg1, ^GENR)
+		}
+	}
+
+	/* eMMC */
+	Device (SDHA) {
+		Name (_ADR, 0x001C0000)
+		Name (_DDN, "Intel(R) eMMC Controller - 80865ACC")
+		Name (UUID, ToUUID ("E5C937D0-3553-4D7A-9117-EA4D19C3434D"))
+
+		/*
+		 * Device Specific Method
+		 * Arg0 - UUID
+		 * Arg1 - Revision
+		 * Arg2 - Function Index
+		 */
+		Method (_DSM, 4)
+		{
+			If (LEqual (Arg0, ^UUID)) {
+				/*
+				 * Function 9: Device Readiness Durations
+				 * Returns a package of five integers covering
+				 * various device related delays in PCIe Base Spec.
+				 */
+				If (LEqual (Arg2, 9)) {
+					/*
+					 * Function 9 support for revision 3.
+					 * ECN link for function definitions
+					 * [https://pcisig.com/sites/default/files/
+					 * specification_documents/
+					 * ECN_fw_latency_optimization_final.pdf]
+					 */
+					If (LEqual (Arg1, 3)) {
+						/*
+						 * Integer 0: FW reset time.
+						 * Integer 1: FW data link up time.
+						 * Integer 2: FW functional level reset
+						 * time.
+						 * Integer 3: FW D3 hot to D0 time.
+						 * Integer 4: FW VF enable time.
+						 * set ACPI constant Ones for elements
+						 * where overriding the default value
+						 * is not desired.
+						 */
+						Return (Package (5) {0, Ones, Ones,
+									    Ones, Ones})
+					}
+				}
+			}
+			Return (Buffer() { 0x00 })
+		}
+
+		Method (_PS0, 0, NotSerialized)
+		{
+			/* Clear clock gate
+			 * Clear bit 6 and 0
+			 */
+			^^SCPG(0,0xFFFFFFBE)
+			/* Sleep 2 ms */
+			Sleep (2)
+		}
+
+		Method (_PS3, 0, NotSerialized)
+		{
+			/* Enable power gate
+			 * Restore clock gate
+			 * Restore bit 6 and 0
+			 */
+			^^SCPG(1,0x00000041)
+		}
+
+		Device (CARD)
+		{
+			Name (_ADR, 0x00000008)
+			Method (_RMV, 0, NotSerialized)
+			{
+				Return (0)
+			}
+		}
+	} /* Device (SDHA) */
+
+	/* SD CARD */
+	Device (SDCD)
+	{
+		Name (_ADR, 0x001B0000)
+		Name (_S0W, 4) /* _S0W: S0 Device Wake State */
+		Name (SCD0, 0) /* Store SD_CD DW0 address */
+
+		/* Set the host ownership of sdcard cd during kernel boot */
+		Method (_INI, 0)
+		{
+			/* Check SDCard CD port is valid */
+			If (LAnd (LNotEqual (\SCDP, 0), LNotEqual (\SCDO, 0) ))
+			{
+				/* Store DW0 address of SD_CD */
+				Store (GDW0 (\SCDP, \SCDO), SCD0)
+				/* Get the current SD_CD ownership */
+				Store (\_SB.GHO (\SCDP, \SCDO), Local0)
+				/* Set host ownership as GPIO in HOSTSW_OWN reg */
+				Or (Local0, ShiftLeft (1,  Mod (\SCDO, 32)), Local0)
+				\_SB.SHO (\SCDP, \SCDO, Local0)
+			}
+		}
+
+		Method (_PS0, 0, NotSerialized)
+		{
+			/* Check SDCard CD port is valid */
+			If (LAnd (LNotEqual (\SCDP, 0), LNotEqual (\SCDO, 0) ))
+			{
+				/* Store DW0 into local0 to get rxstate of GPIO */
+				Store (\_SB.GPC0 (SCD0), Local0)
+				/* Extract rxstate [bit 1] of sdcard card detect pin */
+				And (Local0, PAD_CFG0_RX_STATE, Local0)
+				/* If the sdcard is present, rxstate is low.
+				 * If sdcard is not present, rxstate is High.
+				 * Write the inverted value of rxstate to GRR3.
+				 */
+				If (LEqual (Local0, 0)) {
+					Store (1, ^^GRR3)
+				} Else {
+					Store (0, ^^GRR3)
+				}
+				Sleep (2)
+			}
+		}
+
+		Method (_PS3, 0, NotSerialized)
+		{
+			/* Clear GRR3 to Power Gate SD Controller */
+			Store (0, ^^GRR3)
+		}
+
+		Device (CARD)
+		{
+			Name (_ADR, 0x00000008)
+			Method (_RMV, 0, NotSerialized)
+			{
+				Return (1)
+			}
+		}
+	} /* Device (SDCD) */
+}