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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
Scope (\_SB.PCI0) {
/* 0xD6- is the port address */
/* 0x600- is the dynamic clock gating control register offset (GENR) */
OperationRegion (SBMM, SystemMemory,
Or ( Or (CONFIG_PCR_BASE_ADDRESS,
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 (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 (SDCD) */
}
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