Drivers/Mmc/DwEmmc: add designware emmc support
Support designware emmc controller.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
diff --git a/Drivers/Mmc/DwEmmcDxe/DwEmmc.h b/Drivers/Mmc/DwEmmcDxe/DwEmmc.h
new file mode 100644
index 0000000..055f1e0
--- /dev/null
+++ b/Drivers/Mmc/DwEmmcDxe/DwEmmc.h
@@ -0,0 +1,127 @@
+/** @file
+*
+* Copyright (c) 2014-2017, Linaro Limited. All rights reserved.
+*
+* This program and the accompanying materials
+* are licensed and made available under the terms and conditions of the BSD License
+* which accompanies this distribution. The full text of the license may be found at
+* http://opensource.org/licenses/bsd-license.php
+*
+* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+
+
+#ifndef __DWEMMC_H__
+#define __DWEMMC_H__
+
+#include <Protocol/EmbeddedGpio.h>
+
+// DW MMC Registers
+#define DWEMMC_CTRL ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x000)
+#define DWEMMC_PWREN ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x004)
+#define DWEMMC_CLKDIV ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x008)
+#define DWEMMC_CLKSRC ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x00c)
+#define DWEMMC_CLKENA ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x010)
+#define DWEMMC_TMOUT ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x014)
+#define DWEMMC_CTYPE ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x018)
+#define DWEMMC_BLKSIZ ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x01c)
+#define DWEMMC_BYTCNT ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x020)
+#define DWEMMC_INTMASK ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x024)
+#define DWEMMC_CMDARG ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x028)
+#define DWEMMC_CMD ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x02c)
+#define DWEMMC_RESP0 ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x030)
+#define DWEMMC_RESP1 ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x034)
+#define DWEMMC_RESP2 ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x038)
+#define DWEMMC_RESP3 ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x03c)
+#define DWEMMC_RINTSTS ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x044)
+#define DWEMMC_STATUS ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x048)
+#define DWEMMC_FIFOTH ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x04c)
+#define DWEMMC_DEBNCE ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x064)
+#define DWEMMC_UHSREG ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x074)
+#define DWEMMC_BMOD ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x080)
+#define DWEMMC_DBADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x088)
+#define DWEMMC_IDSTS ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x08c)
+#define DWEMMC_IDINTEN ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x090)
+#define DWEMMC_DSCADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x094)
+#define DWEMMC_BUFADDR ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0x098)
+#define DWEMMC_CARDTHRCTL ((UINT32)PcdGet32 (PcdDwEmmcDxeBaseAddress) + 0X100)
+
+#define CMD_UPDATE_CLK 0x80202000
+#define CMD_START_BIT (1 << 31)
+
+#define MMC_8BIT_MODE (1 << 16)
+
+#define BIT_CMD_RESPONSE_EXPECT (1 << 6)
+#define BIT_CMD_LONG_RESPONSE (1 << 7)
+#define BIT_CMD_CHECK_RESPONSE_CRC (1 << 8)
+#define BIT_CMD_DATA_EXPECTED (1 << 9)
+#define BIT_CMD_READ (0 << 10)
+#define BIT_CMD_WRITE (1 << 10)
+#define BIT_CMD_BLOCK_TRANSFER (0 << 11)
+#define BIT_CMD_STREAM_TRANSFER (1 << 11)
+#define BIT_CMD_SEND_AUTO_STOP (1 << 12)
+#define BIT_CMD_WAIT_PRVDATA_COMPLETE (1 << 13)
+#define BIT_CMD_STOP_ABORT_CMD (1 << 14)
+#define BIT_CMD_SEND_INIT (1 << 15)
+#define BIT_CMD_UPDATE_CLOCK_ONLY (1 << 21)
+#define BIT_CMD_READ_CEATA_DEVICE (1 << 22)
+#define BIT_CMD_CCS_EXPECTED (1 << 23)
+#define BIT_CMD_ENABLE_BOOT (1 << 24)
+#define BIT_CMD_EXPECT_BOOT_ACK (1 << 25)
+#define BIT_CMD_DISABLE_BOOT (1 << 26)
+#define BIT_CMD_MANDATORY_BOOT (0 << 27)
+#define BIT_CMD_ALTERNATE_BOOT (1 << 27)
+#define BIT_CMD_VOLT_SWITCH (1 << 28)
+#define BIT_CMD_USE_HOLD_REG (1 << 29)
+#define BIT_CMD_START (1 << 31)
+
+#define DWEMMC_INT_EBE (1 << 15) /* End-bit Err */
+#define DWEMMC_INT_SBE (1 << 13) /* Start-bit Err */
+#define DWEMMC_INT_HLE (1 << 12) /* Hardware-lock Err */
+#define DWEMMC_INT_FRUN (1 << 11) /* FIFO UN/OV RUN */
+#define DWEMMC_INT_DRT (1 << 9) /* Data timeout */
+#define DWEMMC_INT_RTO (1 << 8) /* Response timeout */
+#define DWEMMC_INT_DCRC (1 << 7) /* Data CRC err */
+#define DWEMMC_INT_RCRC (1 << 6) /* Response CRC err */
+#define DWEMMC_INT_RXDR (1 << 5)
+#define DWEMMC_INT_TXDR (1 << 4)
+#define DWEMMC_INT_DTO (1 << 3) /* Data trans over */
+#define DWEMMC_INT_CMD_DONE (1 << 2)
+#define DWEMMC_INT_RE (1 << 1)
+
+#define DWEMMC_IDMAC_DES0_DIC (1 << 1)
+#define DWEMMC_IDMAC_DES0_LD (1 << 2)
+#define DWEMMC_IDMAC_DES0_FS (1 << 3)
+#define DWEMMC_IDMAC_DES0_CH (1 << 4)
+#define DWEMMC_IDMAC_DES0_ER (1 << 5)
+#define DWEMMC_IDMAC_DES0_CES (1 << 30)
+#define DWEMMC_IDMAC_DES0_OWN (1 << 31)
+#define DWEMMC_IDMAC_DES1_BS1(x) ((x) & 0x1fff)
+#define DWEMMC_IDMAC_DES2_BS2(x) (((x) & 0x1fff) << 13)
+#define DWEMMC_IDMAC_SWRESET (1 << 0)
+#define DWEMMC_IDMAC_FB (1 << 1)
+#define DWEMMC_IDMAC_ENABLE (1 << 7)
+
+#define EMMC_FIX_RCA 6
+
+/* bits in MMC0_CTRL */
+#define DWEMMC_CTRL_RESET (1 << 0)
+#define DWEMMC_CTRL_FIFO_RESET (1 << 1)
+#define DWEMMC_CTRL_DMA_RESET (1 << 2)
+#define DWEMMC_CTRL_INT_EN (1 << 4)
+#define DWEMMC_CTRL_DMA_EN (1 << 5)
+#define DWEMMC_CTRL_IDMAC_EN (1 << 25)
+#define DWEMMC_CTRL_RESET_ALL (DWEMMC_CTRL_RESET | DWEMMC_CTRL_FIFO_RESET | DWEMMC_CTRL_DMA_RESET)
+
+#define DWEMMC_STS_DATA_BUSY (1 << 9)
+
+#define DWEMMC_FIFO_TWMARK(x) (x & 0xfff)
+#define DWEMMC_FIFO_RWMARK(x) ((x & 0x1ff) << 16)
+#define DWEMMC_DMA_BURST_SIZE(x) ((x & 0x7) << 28)
+
+#define DWEMMC_CARD_RD_THR(x) ((x & 0xfff) << 16)
+#define DWEMMC_CARD_RD_THR_EN (1 << 0)
+
+#endif // __DWEMMC_H__
diff --git a/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.c b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.c
new file mode 100644
index 0000000..fe23d11
--- /dev/null
+++ b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.c
@@ -0,0 +1,648 @@
+/** @file
+ This file implement the MMC Host Protocol for the DesignWare eMMC.
+
+ Copyright (c) 2014-2017, Linaro Limited. All rights reserved.
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Library/BaseMemoryLib.h>
+#include <Library/CacheMaintenanceLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/TimerLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+
+#include <Protocol/MmcHost.h>
+
+#include "DwEmmc.h"
+
+#define DWEMMC_DESC_PAGE 1
+#define DWEMMC_BLOCK_SIZE 512
+#define DWEMMC_DMA_BUF_SIZE (512 * 8)
+#define DWEMMC_MAX_DESC_PAGES 512
+
+typedef struct {
+ UINT32 Des0;
+ UINT32 Des1;
+ UINT32 Des2;
+ UINT32 Des3;
+} DWEMMC_IDMAC_DESCRIPTOR;
+
+EFI_MMC_HOST_PROTOCOL *gpMmcHost;
+DWEMMC_IDMAC_DESCRIPTOR *gpIdmacDesc;
+EFI_GUID mDwEmmcDevicePathGuid = EFI_CALLER_ID_GUID;
+STATIC UINT32 mDwEmmcCommand;
+STATIC UINT32 mDwEmmcArgument;
+
+EFI_STATUS
+DwEmmcReadBlockData (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Length,
+ IN UINT32* Buffer
+ );
+
+BOOLEAN
+DwEmmcIsPowerOn (
+ VOID
+ )
+{
+ return TRUE;
+}
+
+EFI_STATUS
+DwEmmcInitialize (
+ VOID
+ )
+{
+ DEBUG ((DEBUG_BLKIO, "DwEmmcInitialize()"));
+ return EFI_SUCCESS;
+}
+
+BOOLEAN
+DwEmmcIsCardPresent (
+ IN EFI_MMC_HOST_PROTOCOL *This
+ )
+{
+ return TRUE;
+}
+
+BOOLEAN
+DwEmmcIsReadOnly (
+ IN EFI_MMC_HOST_PROTOCOL *This
+ )
+{
+ return FALSE;
+}
+
+BOOLEAN
+DwEmmcIsDmaSupported (
+ IN EFI_MMC_HOST_PROTOCOL *This
+ )
+{
+ return TRUE;
+}
+
+EFI_STATUS
+DwEmmcBuildDevicePath (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN EFI_DEVICE_PATH_PROTOCOL **DevicePath
+ )
+{
+ EFI_DEVICE_PATH_PROTOCOL *NewDevicePathNode;
+
+ NewDevicePathNode = CreateDeviceNode (HARDWARE_DEVICE_PATH, HW_VENDOR_DP, sizeof (VENDOR_DEVICE_PATH));
+ CopyGuid (& ((VENDOR_DEVICE_PATH*)NewDevicePathNode)->Guid, &mDwEmmcDevicePathGuid);
+
+ *DevicePath = NewDevicePathNode;
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+DwEmmcUpdateClock (
+ VOID
+ )
+{
+ UINT32 Data;
+
+ /* CMD_UPDATE_CLK */
+ Data = BIT_CMD_WAIT_PRVDATA_COMPLETE | BIT_CMD_UPDATE_CLOCK_ONLY |
+ BIT_CMD_START;
+ MmioWrite32 (DWEMMC_CMD, Data);
+ while (1) {
+ Data = MmioRead32 (DWEMMC_CMD);
+ if (!(Data & CMD_START_BIT)) {
+ break;
+ }
+ Data = MmioRead32 (DWEMMC_RINTSTS);
+ if (Data & DWEMMC_INT_HLE) {
+ Print (L"failed to update mmc clock frequency\n");
+ return EFI_DEVICE_ERROR;
+ }
+ }
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+DwEmmcSetClock (
+ IN UINTN ClockFreq
+ )
+{
+ UINT32 Divider, Rate, Data;
+ EFI_STATUS Status;
+ BOOLEAN Found = FALSE;
+
+ for (Divider = 1; Divider < 256; Divider++) {
+ Rate = PcdGet32 (PcdDwEmmcDxeClockFrequencyInHz);
+ if ((Rate / (2 * Divider)) <= ClockFreq) {
+ Found = TRUE;
+ break;
+ }
+ }
+ if (Found == FALSE) {
+ return EFI_NOT_FOUND;
+ }
+
+ // Wait until MMC is idle
+ do {
+ Data = MmioRead32 (DWEMMC_STATUS);
+ } while (Data & DWEMMC_STS_DATA_BUSY);
+
+ // Disable MMC clock first
+ MmioWrite32 (DWEMMC_CLKENA, 0);
+ Status = DwEmmcUpdateClock ();
+ ASSERT (!EFI_ERROR (Status));
+
+ MmioWrite32 (DWEMMC_CLKDIV, Divider);
+ Status = DwEmmcUpdateClock ();
+ ASSERT (!EFI_ERROR (Status));
+
+ // Enable MMC clock
+ MmioWrite32 (DWEMMC_CLKENA, 1);
+ MmioWrite32 (DWEMMC_CLKSRC, 0);
+ Status = DwEmmcUpdateClock ();
+ ASSERT (!EFI_ERROR (Status));
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+DwEmmcNotifyState (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN MMC_STATE State
+ )
+{
+ UINT32 Data;
+ EFI_STATUS Status;
+
+ switch (State) {
+ case MmcInvalidState:
+ return EFI_INVALID_PARAMETER;
+ case MmcHwInitializationState:
+ MmioWrite32 (DWEMMC_PWREN, 1);
+
+ // If device already turn on then restart it
+ Data = DWEMMC_CTRL_RESET_ALL;
+ MmioWrite32 (DWEMMC_CTRL, Data);
+ do {
+ // Wait until reset operation finished
+ Data = MmioRead32 (DWEMMC_CTRL);
+ } while (Data & DWEMMC_CTRL_RESET_ALL);
+
+ // Setup clock that could not be higher than 400KHz.
+ Status = DwEmmcSetClock (400000);
+ ASSERT (!EFI_ERROR (Status));
+ // Wait clock stable
+ MicroSecondDelay (100);
+
+ MmioWrite32 (DWEMMC_RINTSTS, ~0);
+ MmioWrite32 (DWEMMC_INTMASK, 0);
+ MmioWrite32 (DWEMMC_TMOUT, ~0);
+ MmioWrite32 (DWEMMC_IDINTEN, 0);
+ MmioWrite32 (DWEMMC_BMOD, DWEMMC_IDMAC_SWRESET);
+
+ MmioWrite32 (DWEMMC_BLKSIZ, DWEMMC_BLOCK_SIZE);
+ do {
+ Data = MmioRead32 (DWEMMC_BMOD);
+ } while (Data & DWEMMC_IDMAC_SWRESET);
+ break;
+ case MmcIdleState:
+ break;
+ case MmcReadyState:
+ break;
+ case MmcIdentificationState:
+ break;
+ case MmcStandByState:
+ break;
+ case MmcTransferState:
+ break;
+ case MmcSendingDataState:
+ break;
+ case MmcReceiveDataState:
+ break;
+ case MmcProgrammingState:
+ break;
+ case MmcDisconnectState:
+ break;
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+ return EFI_SUCCESS;
+}
+
+// Need to prepare DMA buffer first before sending commands to MMC card
+BOOLEAN
+IsPendingReadCommand (
+ IN MMC_CMD MmcCmd
+ )
+{
+ UINTN Mask;
+
+ Mask = BIT_CMD_DATA_EXPECTED | BIT_CMD_READ;
+ if ((MmcCmd & Mask) == Mask) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+BOOLEAN
+IsPendingWriteCommand (
+ IN MMC_CMD MmcCmd
+ )
+{
+ UINTN Mask;
+
+ Mask = BIT_CMD_DATA_EXPECTED | BIT_CMD_WRITE;
+ if ((MmcCmd & Mask) == Mask) {
+ return TRUE;
+ }
+ return FALSE;
+}
+
+EFI_STATUS
+SendCommand (
+ IN MMC_CMD MmcCmd,
+ IN UINT32 Argument
+ )
+{
+ UINT32 Data, ErrMask;
+
+ // Wait until MMC is idle
+ do {
+ Data = MmioRead32 (DWEMMC_STATUS);
+ } while (Data & DWEMMC_STS_DATA_BUSY);
+
+ MmioWrite32 (DWEMMC_RINTSTS, ~0);
+ MmioWrite32 (DWEMMC_CMDARG, Argument);
+ MmioWrite32 (DWEMMC_CMD, MmcCmd);
+
+ ErrMask = DWEMMC_INT_EBE | DWEMMC_INT_HLE | DWEMMC_INT_RTO |
+ DWEMMC_INT_RCRC | DWEMMC_INT_RE;
+ ErrMask |= DWEMMC_INT_DCRC | DWEMMC_INT_DRT | DWEMMC_INT_SBE;
+ do {
+ MicroSecondDelay(500);
+ Data = MmioRead32 (DWEMMC_RINTSTS);
+
+ if (Data & ErrMask) {
+ return EFI_DEVICE_ERROR;
+ }
+ if (Data & DWEMMC_INT_DTO) { // Transfer Done
+ break;
+ }
+ } while (!(Data & DWEMMC_INT_CMD_DONE));
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+DwEmmcSendCommand (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN MMC_CMD MmcCmd,
+ IN UINT32 Argument
+ )
+{
+ UINT32 Cmd = 0;
+ EFI_STATUS Status = EFI_SUCCESS;
+
+ switch (MMC_GET_INDX(MmcCmd)) {
+ case MMC_INDX(0):
+ Cmd = BIT_CMD_SEND_INIT;
+ break;
+ case MMC_INDX(1):
+ Cmd = BIT_CMD_RESPONSE_EXPECT;
+ break;
+ case MMC_INDX(2):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_LONG_RESPONSE |
+ BIT_CMD_CHECK_RESPONSE_CRC | BIT_CMD_SEND_INIT;
+ break;
+ case MMC_INDX(3):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_SEND_INIT;
+ break;
+ case MMC_INDX(7):
+ if (Argument)
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC;
+ else
+ Cmd = 0;
+ break;
+ case MMC_INDX(8):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |
+ BIT_CMD_WAIT_PRVDATA_COMPLETE;
+ break;
+ case MMC_INDX(9):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_LONG_RESPONSE;
+ break;
+ case MMC_INDX(12):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_STOP_ABORT_CMD;
+ break;
+ case MMC_INDX(13):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_WAIT_PRVDATA_COMPLETE;
+ break;
+ case MMC_INDX(16):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |
+ BIT_CMD_WAIT_PRVDATA_COMPLETE;
+ break;
+ case MMC_INDX(17):
+ case MMC_INDX(18):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |
+ BIT_CMD_WAIT_PRVDATA_COMPLETE;
+ break;
+ case MMC_INDX(24):
+ case MMC_INDX(25):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_DATA_EXPECTED | BIT_CMD_WRITE |
+ BIT_CMD_WAIT_PRVDATA_COMPLETE;
+ break;
+ case MMC_INDX(30):
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |
+ BIT_CMD_DATA_EXPECTED;
+ break;
+ default:
+ Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC;
+ break;
+ }
+
+ Cmd |= MMC_GET_INDX(MmcCmd) | BIT_CMD_USE_HOLD_REG | BIT_CMD_START;
+ if (IsPendingReadCommand (Cmd) || IsPendingWriteCommand (Cmd)) {
+ mDwEmmcCommand = Cmd;
+ mDwEmmcArgument = Argument;
+ } else {
+ Status = SendCommand (Cmd, Argument);
+ }
+ return Status;
+}
+
+EFI_STATUS
+DwEmmcReceiveResponse (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN MMC_RESPONSE_TYPE Type,
+ IN UINT32* Buffer
+ )
+{
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ( (Type == MMC_RESPONSE_TYPE_R1)
+ || (Type == MMC_RESPONSE_TYPE_R1b)
+ || (Type == MMC_RESPONSE_TYPE_R3)
+ || (Type == MMC_RESPONSE_TYPE_R6)
+ || (Type == MMC_RESPONSE_TYPE_R7))
+ {
+ Buffer[0] = MmioRead32 (DWEMMC_RESP0);
+ } else if (Type == MMC_RESPONSE_TYPE_R2) {
+ Buffer[0] = MmioRead32 (DWEMMC_RESP0);
+ Buffer[1] = MmioRead32 (DWEMMC_RESP1);
+ Buffer[2] = MmioRead32 (DWEMMC_RESP2);
+ Buffer[3] = MmioRead32 (DWEMMC_RESP3);
+ }
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+PrepareDmaData (
+ IN DWEMMC_IDMAC_DESCRIPTOR* IdmacDesc,
+ IN UINTN Length,
+ IN UINT32* Buffer
+ )
+{
+ UINTN Cnt, Blks, Idx, LastIdx;
+
+ Cnt = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;
+ Blks = (Length + DWEMMC_BLOCK_SIZE - 1) / DWEMMC_BLOCK_SIZE;
+ Length = DWEMMC_BLOCK_SIZE * Blks;
+
+ for (Idx = 0; Idx < Cnt; Idx++) {
+ (IdmacDesc + Idx)->Des0 = DWEMMC_IDMAC_DES0_OWN | DWEMMC_IDMAC_DES0_CH |
+ DWEMMC_IDMAC_DES0_DIC;
+ (IdmacDesc + Idx)->Des1 = DWEMMC_IDMAC_DES1_BS1(DWEMMC_DMA_BUF_SIZE);
+ /* Buffer Address */
+ (IdmacDesc + Idx)->Des2 = (UINT32)((UINTN)Buffer + DWEMMC_DMA_BUF_SIZE * Idx);
+ /* Next Descriptor Address */
+ (IdmacDesc + Idx)->Des3 = (UINT32)((UINTN)IdmacDesc +
+ (sizeof(DWEMMC_IDMAC_DESCRIPTOR) * (Idx + 1)));
+ }
+ /* First Descriptor */
+ IdmacDesc->Des0 |= DWEMMC_IDMAC_DES0_FS;
+ /* Last Descriptor */
+ LastIdx = Cnt - 1;
+ (IdmacDesc + LastIdx)->Des0 |= DWEMMC_IDMAC_DES0_LD;
+ (IdmacDesc + LastIdx)->Des0 &= ~(DWEMMC_IDMAC_DES0_DIC | DWEMMC_IDMAC_DES0_CH);
+ (IdmacDesc + LastIdx)->Des1 = DWEMMC_IDMAC_DES1_BS1(Length -
+ (LastIdx * DWEMMC_DMA_BUF_SIZE));
+ /* Set the Next field of Last Descriptor */
+ (IdmacDesc + LastIdx)->Des3 = 0;
+ MmioWrite32 (DWEMMC_DBADDR, (UINT32)((UINTN)IdmacDesc));
+
+ return EFI_SUCCESS;
+}
+
+VOID
+StartDma (
+ UINTN Length
+ )
+{
+ UINT32 Data;
+
+ Data = MmioRead32 (DWEMMC_CTRL);
+ Data |= DWEMMC_CTRL_INT_EN | DWEMMC_CTRL_DMA_EN | DWEMMC_CTRL_IDMAC_EN;
+ MmioWrite32 (DWEMMC_CTRL, Data);
+ Data = MmioRead32 (DWEMMC_BMOD);
+ Data |= DWEMMC_IDMAC_ENABLE | DWEMMC_IDMAC_FB;
+ MmioWrite32 (DWEMMC_BMOD, Data);
+
+ MmioWrite32 (DWEMMC_BLKSIZ, DWEMMC_BLOCK_SIZE);
+ MmioWrite32 (DWEMMC_BYTCNT, Length);
+}
+
+EFI_STATUS
+DwEmmcReadBlockData (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Length,
+ IN UINT32* Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 DescPages, CountPerPage, Count;
+ EFI_TPL Tpl;
+
+ Tpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ CountPerPage = EFI_PAGE_SIZE / 16;
+ Count = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;
+ DescPages = (Count + CountPerPage - 1) / CountPerPage;
+
+ InvalidateDataCacheRange (Buffer, Length);
+
+ Status = PrepareDmaData (gpIdmacDesc, Length, Buffer);
+ if (EFI_ERROR (Status)) {
+ goto out;
+ }
+
+ WriteBackDataCacheRange (gpIdmacDesc, DescPages * EFI_PAGE_SIZE);
+ StartDma (Length);
+
+ Status = SendCommand (mDwEmmcCommand, mDwEmmcArgument);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Failed to read data, mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", mDwEmmcCommand, mDwEmmcArgument, Status));
+ goto out;
+ }
+out:
+ // Restore Tpl
+ gBS->RestoreTPL (Tpl);
+ return Status;
+}
+
+EFI_STATUS
+DwEmmcWriteBlockData (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN EFI_LBA Lba,
+ IN UINTN Length,
+ IN UINT32* Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT32 DescPages, CountPerPage, Count;
+ EFI_TPL Tpl;
+
+ Tpl = gBS->RaiseTPL (TPL_NOTIFY);
+
+ CountPerPage = EFI_PAGE_SIZE / 16;
+ Count = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;
+ DescPages = (Count + CountPerPage - 1) / CountPerPage;
+
+ WriteBackDataCacheRange (Buffer, Length);
+
+ Status = PrepareDmaData (gpIdmacDesc, Length, Buffer);
+ if (EFI_ERROR (Status)) {
+ goto out;
+ }
+
+ WriteBackDataCacheRange (gpIdmacDesc, DescPages * EFI_PAGE_SIZE);
+ StartDma (Length);
+
+ Status = SendCommand (mDwEmmcCommand, mDwEmmcArgument);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "Failed to write data, mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", mDwEmmcCommand, mDwEmmcArgument, Status));
+ goto out;
+ }
+out:
+ // Restore Tpl
+ gBS->RestoreTPL (Tpl);
+ return Status;
+}
+
+EFI_STATUS
+DwEmmcSetIos (
+ IN EFI_MMC_HOST_PROTOCOL *This,
+ IN UINT32 BusClockFreq,
+ IN UINT32 BusWidth,
+ IN UINT32 TimingMode
+ )
+{
+ EFI_STATUS Status = EFI_SUCCESS;
+ UINT32 Data;
+
+ if (TimingMode != EMMCBACKWARD) {
+ Data = MmioRead32 (DWEMMC_UHSREG);
+ switch (TimingMode) {
+ case EMMCHS52DDR1V2:
+ case EMMCHS52DDR1V8:
+ Data |= 1 << 16;
+ break;
+ case EMMCHS52:
+ case EMMCHS26:
+ Data &= ~(1 << 16);
+ break;
+ default:
+ return EFI_UNSUPPORTED;
+ }
+ MmioWrite32 (DWEMMC_UHSREG, Data);
+ }
+
+ switch (BusWidth) {
+ case 1:
+ MmioWrite32 (DWEMMC_CTYPE, 0);
+ break;
+ case 4:
+ MmioWrite32 (DWEMMC_CTYPE, 1);
+ break;
+ case 8:
+ MmioWrite32 (DWEMMC_CTYPE, 1 << 16);
+ break;
+ default:
+ return EFI_UNSUPPORTED;
+ }
+ if (BusClockFreq) {
+ Status = DwEmmcSetClock (BusClockFreq);
+ }
+ return Status;
+}
+
+BOOLEAN
+DwEmmcIsMultiBlock (
+ IN EFI_MMC_HOST_PROTOCOL *This
+ )
+{
+ return TRUE;
+}
+
+EFI_MMC_HOST_PROTOCOL gMciHost = {
+ MMC_HOST_PROTOCOL_REVISION,
+ DwEmmcIsCardPresent,
+ DwEmmcIsReadOnly,
+ DwEmmcBuildDevicePath,
+ DwEmmcNotifyState,
+ DwEmmcSendCommand,
+ DwEmmcReceiveResponse,
+ DwEmmcReadBlockData,
+ DwEmmcWriteBlockData,
+ DwEmmcSetIos,
+ DwEmmcIsMultiBlock
+};
+
+EFI_STATUS
+DwEmmcDxeInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+
+ Handle = NULL;
+
+ gpIdmacDesc = (DWEMMC_IDMAC_DESCRIPTOR *)AllocatePages (DWEMMC_MAX_DESC_PAGES);
+ if (gpIdmacDesc == NULL) {
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ DEBUG ((DEBUG_BLKIO, "DwEmmcDxeInitialize()\n"));
+
+ //Publish Component Name, BlockIO protocol interfaces
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiMmcHostProtocolGuid, &gMciHost,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
diff --git a/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.dec b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.dec
new file mode 100644
index 0000000..c4bf7ed
--- /dev/null
+++ b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.dec
@@ -0,0 +1,42 @@
+#/** @file
+# Framework Module Development Environment Industry Standards
+#
+# This Package provides headers and libraries that conform to EFI/PI Industry standards.
+# Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2012-2014, ARM Ltd. All rights reserved.<BR>
+# Copyright (c) 2015-2017, Linaro. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available under
+# the terms and conditions of the BSD License which accompanies this distribution.
+# The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#**/
+
+[Defines]
+ DEC_SPECIFICATION = 0x00010019
+ PACKAGE_NAME = MmcDwEmmcDxePkg
+ PACKAGE_GUID = 3869905e-c96c-4d20-9bfb-3b9d71bb900c
+ PACKAGE_VERSION = 0.1
+
+
+################################################################################
+#
+# Include Section - list of Include Paths that are provided by this package.
+# Comments are used for Keywords and Module Types.
+#
+# Supported Module Types:
+# BASE SEC PEI_CORE PEIM DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SMM_DRIVER DXE_SAL_DRIVER UEFI_DRIVER UEFI_APPLICATION
+#
+################################################################################
+
+[Guids.common]
+ gDwEmmcDxeTokenSpaceGuid = { 0x6fdd76a9, 0xf220, 0x4f1d, { 0x9c, 0xcf, 0xbc, 0x2d, 0x68, 0x29, 0xab, 0x9c }}
+
+[PcdsFixedAtBuild.common]
+ # DwEmmc Driver PCDs
+ gDwEmmcDxeTokenSpaceGuid.PcdDwEmmcDxeBaseAddress|0x0|UINT32|0x00000001
+ gDwEmmcDxeTokenSpaceGuid.PcdDwEmmcDxeClockFrequencyInHz|0x0|UINT32|0x00000002
diff --git a/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.inf b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.inf
new file mode 100644
index 0000000..c0cbba7
--- /dev/null
+++ b/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.inf
@@ -0,0 +1,54 @@
+#/** @file
+# INF file for the eMMC Host Protocol implementation for the DesignWare MMC.
+#
+# Copyright (c) 2014-2017, Linaro Limited. All rights reserved.
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010019
+ BASE_NAME = DwEmmcDxe
+ FILE_GUID = b549f005-4bd4-4020-a0cb-06f42bda68c3
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = DwEmmcDxeInitialize
+
+[Sources.common]
+ DwEmmcDxe.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdePkg/MdePkg.dec
+ OpenPlatformPkg/Drivers/Mmc/DwEmmcDxe/DwEmmcDxe.dec
+
+[LibraryClasses]
+ ArmLib
+ BaseLib
+ BaseMemoryLib
+ CacheMaintenanceLib
+ IoLib
+ MemoryAllocationLib
+ TimerLib
+ UefiDriverEntryPoint
+ UefiLib
+
+[Protocols]
+ gEfiCpuArchProtocolGuid
+ gEfiDevicePathProtocolGuid
+ gEfiMmcHostProtocolGuid
+
+[Pcd]
+ gDwEmmcDxeTokenSpaceGuid.PcdDwEmmcDxeBaseAddress
+ gDwEmmcDxeTokenSpaceGuid.PcdDwEmmcDxeClockFrequencyInHz
+
+[Depex]
+ TRUE
