@@ -64,11 +64,14 @@ typedef UINT32 MMC_CMD;
#define MMC_CMD24 (MMC_INDX(24) | MMC_CMD_WAIT_RESPONSE)
#define MMC_CMD55 (MMC_INDX(55) | MMC_CMD_WAIT_RESPONSE)
#define MMC_ACMD41 (MMC_INDX(41) | MMC_CMD_WAIT_RESPONSE | MMC_CMD_NO_CRC_RESPONSE)
+#define MMC_ACMD51 (MMC_INDX(51) | MMC_CMD_WAIT_RESPONSE)
// Valid responses for CMD1 in eMMC
#define EMMC_CMD1_CAPACITY_LESS_THAN_2GB 0x00FF8080 // Capacity <= 2GB, byte addressing used
#define EMMC_CMD1_CAPACITY_GREATER_THAN_2GB 0x40FF8080 // Capacity > 2GB, 512-byte sector addressing used
+#define MMC_STATUS_APP_CMD (1 << 5)
+
typedef enum _MMC_STATE {
MmcInvalidState = 0,
MmcHwInitializationState,
@@ -75,6 +75,23 @@ typedef struct {
UINT32 PowerUp: 1; // This bit is set to LOW if the card has not finished the power up routine
} OCR;
+/* For little endian CPU */
+typedef struct {
+ UINT8 SD_SPEC: 4; // SD Memory Card - Spec. Version [59:56]
+ UINT8 SCR_STRUCTURE: 4; // SCR Structure [63:60]
+ UINT8 SD_BUS_WIDTHS: 4; // DAT Bus widths supported [51:48]
+ UINT8 DATA_STAT_AFTER_ERASE: 1; // Data Status after erases [55]
+ UINT8 SD_SECURITY: 3; // CPRM Security Support [54:52]
+ UINT8 EX_SECURITY_1: 1; // Extended Security Support [43]
+ UINT8 SD_SPEC4: 1; // Spec. Version 4.00 or higher [42]
+ UINT8 RESERVED_1: 2; // Reserved [41:40]
+ UINT8 SD_SPEC3: 1; // Spec. Version 3.00 or higher [47]
+ UINT8 EX_SECURITY_2: 3; // Extended Security Support [46:44]
+ UINT8 CMD_SUPPORT: 4; // Command Support bits [35:32]
+ UINT8 RESERVED_2: 4; // Reserved [39:36]
+ UINT32 RESERVED_3; // Manufacturer Usage [31:0]
+} SCR;
+
typedef struct {
UINT32 NOT_USED; // 1 [0:0]
UINT32 CRC; // CRC7 checksum [7:1]
@@ -12,6 +12,9 @@
*
**/
+#include <Library/BaseMemoryLib.h>
+#include <Library/TimerLib.h>
+
#include "Mmc.h"
typedef union {
@@ -41,6 +44,11 @@ typedef union {
#define EMMC_SWITCH_ERROR (1 << 7)
+#define SD_BUS_WIDTH_1BIT (1 << 0)
+#define SD_BUS_WIDTH_4BIT (1 << 2)
+
+#define SD_CCC_SWITCH (1 << 10)
+
#define DEVICE_STATE(x) (((x) >> 9) & 0xf)
typedef enum _EMMC_DEVICE_STATE {
EMMC_IDLE_STATE = 0,
@@ -69,28 +77,30 @@ EmmcGetDeviceState (
{
EFI_MMC_HOST_PROTOCOL *Host;
EFI_STATUS Status;
- UINT32 Data, RCA;
+ UINT32 Rsp[4], RCA;
if (State == NULL)
return EFI_INVALID_PARAMETER;
Host = MmcHostInstance->MmcHost;
RCA = MmcHostInstance->CardInfo.RCA << RCA_SHIFT_OFFSET;
- Status = Host->SendCommand (Host, MMC_CMD13, RCA);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get card status, Status=%r.\n", Status));
- return Status;
- }
- Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R1, &Data);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get response of CMD13, Status=%r.\n", Status));
- return Status;
- }
- if (Data & EMMC_SWITCH_ERROR) {
- DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to switch expected mode, Status=%r.\n", Status));
- return EFI_DEVICE_ERROR;
- }
- *State = DEVICE_STATE(Data);
+ do {
+ Status = Host->SendCommand (Host, MMC_CMD13, RCA);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get card status, Status=%r.\n", Status));
+ return Status;
+ }
+ Status = Host->ReceiveResponse (Host, MMC_RESPONSE_TYPE_R1, Rsp);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to get response of CMD13, Status=%r.\n", Status));
+ return Status;
+ }
+ if (Rsp[0] & EMMC_SWITCH_ERROR) {
+ DEBUG ((EFI_D_ERROR, "EmmcGetDeviceState(): Failed to switch expected mode, Status=%r.\n", Status));
+ return EFI_DEVICE_ERROR;
+ }
+ } while (!(Rsp[0] & MMC_R0_READY_FOR_DATA));
+ *State = MMC_R0_CURRENTSTATE(Rsp);
return EFI_SUCCESS;
}
@@ -305,9 +315,12 @@ InitializeSdMmcDevice (
{
UINT32 CmdArg;
UINT32 Response[4];
+ UINT32 Buffer[128];
UINTN BlockSize;
UINTN CardSize;
UINTN NumBlocks;
+ BOOLEAN CccSwitch;
+ SCR Scr;
EFI_STATUS Status;
EFI_MMC_HOST_PROTOCOL *MmcHost;
@@ -328,6 +341,10 @@ InitializeSdMmcDevice (
return Status;
}
PrintCSD (Response);
+ if (MMC_CSD_GET_CCC(Response) & SD_CCC_SWITCH)
+ CccSwitch = TRUE;
+ else
+ CccSwitch = FALSE;
if (MmcHostInstance->CardInfo.CardType == SD_CARD_2_HIGH) {
CardSize = HC_MMC_CSD_GET_DEVICESIZE (Response);
@@ -358,6 +375,95 @@ InitializeSdMmcDevice (
return Status;
}
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
+ return Status;
+ }
+ Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
+ return Status;
+ }
+ if ((Response[0] & MMC_STATUS_APP_CMD) == 0)
+ return EFI_SUCCESS;
+
+ /* SCR */
+ Status = MmcHost->SendCommand (MmcHost, MMC_ACMD51, 0);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): Error and Status = %r\n", __func__, Status));
+ return Status;
+ } else {
+ Status = MmcHost->ReadBlockData (MmcHost, 0, 8, Buffer);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): ReadBlockData Error and Status = %r\n", __func__, Status));
+ return Status;
+ }
+ CopyMem (&Scr, Buffer, 8);
+ if (Scr.SD_SPEC == 2) {
+ if (Scr.SD_SPEC3 == 1) {
+ if (Scr.SD_SPEC4 == 1) {
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 4.xx\n"));
+ } else {
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 3.0x\n"));
+ }
+ } else {
+ if (Scr.SD_SPEC4 == 0) {
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 2.0\n"));
+ } else {
+ DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
+ }
+ }
+ } else {
+ if ((Scr.SD_SPEC3 == 0) && (Scr.SD_SPEC4 == 0)) {
+ if (Scr.SD_SPEC == 1) {
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.10\n"));
+ } else {
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.0\n"));
+ }
+ } else {
+ DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));
+ }
+ }
+ }
+ if (CccSwitch) {
+ /* SD Switch, Mode:1, Group:0, Value:1 */
+ CmdArg = 1 << 31 | 0x00FFFFFF;
+ CmdArg &= ~(0xF << (0 * 4));
+ CmdArg |= 1 << (0 * 4);
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, CmdArg);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));
+ return Status;
+ } else {
+ Status = MmcHost->ReadBlockData (MmcHost, 0, 64, Buffer);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): ReadBlockData Error and Status = %r\n", Status));
+ return Status;
+ }
+ }
+ }
+ if (Scr.SD_BUS_WIDTHS & SD_BUS_WIDTH_4BIT) {
+ CmdArg = MmcHostInstance->CardInfo.RCA << 16;
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));
+ return Status;
+ }
+ /* Width: 4 */
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, 2);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));
+ return Status;
+ }
+ }
+ if (MmcHost->SetIos) {
+ Status = MmcHost->SetIos (MmcHost, 24 * 1000 * 1000, 4, EMMCBACKWARD);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((EFI_D_ERROR, "%a(SetIos): Error and Status = %r\n", Status));
+ return Status;
+ }
+ }
return EFI_SUCCESS;
}
Add more SD commands to support 4-bit bus width & iospeed. It's not formal code. And it needs to be updated later. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> --- EmbeddedPkg/Include/Protocol/MmcHost.h | 3 + EmbeddedPkg/Universal/MmcDxe/Mmc.h | 17 +++ EmbeddedPkg/Universal/MmcDxe/MmcIdentification.c | 138 ++++++++++++++++++++--- 3 files changed, 142 insertions(+), 16 deletions(-) -- 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel