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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017-2018 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.
*/
#include <soc/pcr_ids.h>
Scope (\_SB.PCI0) {
/* EMMC */
Device(PEMC) {
Name(_ADR, 0x001A0000)
Name (_DDN, "eMMC Controller")
Name (TEMP, 0)
OperationRegion(SCSR, PCI_Config, 0x00, 0x100)
Field(SCSR, WordAcc, NoLock, Preserve) {
Offset (0x84), /* PMECTRLSTATUS */
PMCR, 16,
Offset (0xA2), /* PG_CONFIG */
, 2,
PGEN, 1, /* PG_ENABLE */
}
Method(_PS0, 0, Serialized) {
Stall (50) // Sleep 50 us
Store(0, PGEN) // Disable PG
/* Clear register 0x1C20/0x4820 */
^^PCRA (PID_EMMC, 0x1C20, 0x0)
^^PCRA (PID_EMMC, 0x4820, 0x0)
/* Set Power State to D0 */
And (PMCR, 0xFFFC, PMCR)
Store (PMCR, ^TEMP)
}
Method(_PS3, 0, Serialized) {
Store(1, PGEN) // Enable PG
/* Set Power State to D3 */
Or (PMCR, 0x0003, PMCR)
Store (PMCR, ^TEMP)
}
Device (CARD)
{
Name (_ADR, 0x00000008)
Method (_RMV, 0, NotSerialized)
{
Return (0)
}
}
}
/* SD CARD */
Device (SDXC)
{
Name (_ADR, 0x00140005)
Name (_DDN, "SD Controller")
Name (TEMP, 0)
OperationRegion (SDPC, PCI_Config, 0x00, 0x100)
Field (SDPC, WordAcc, NoLock, Preserve)
{
Offset (0x84), /* PMECTRLSTATUS */
PMCR, 16,
Offset (0xA2), /* PG_CONFIG */
, 2,
PGEN, 1, /* PG_ENABLE */
}
Method (_PS0, 0, Serialized)
{
Store (0, PGEN) /* Disable PG */
/* Clear register 0x1C20/0x4820 */
^^PCRA (PID_SDX, 0x1C20, 0x0)
^^PCRA (PID_SDX, 0x4820, 0x0)
/* Set Power State to D0 */
And (PMCR, 0xFFFC, PMCR)
Store (PMCR, ^TEMP)
}
Method (_PS3, 0, Serialized)
{
Store (1, PGEN) /* Enable PG */
/* Set Power State to D3 */
Or (PMCR, 0x0003, PMCR)
Store (PMCR, ^TEMP)
}
Device (CARD)
{
Name (_ADR, 0x00000008)
Method (_RMV, 0, NotSerialized)
{
Return (1)
}
}
} /* Device (SDXC) */
}
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