+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ Status = MmcHost->ReceiveResponse (MmcHost, MMC_RESPONSE_TYPE_R1, Response);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ if ((Response[0] & MMC_STATUS_APP_CMD) == 0) {\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ /* SCR */\r
+ Status = MmcHost->SendCommand (MmcHost, MMC_ACMD51, 0);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): Error and Status = %r\n", __func__, Status));\r
+ return Status;\r
+ } else {\r
+ Status = MmcHost->ReadBlockData (MmcHost, 0, 8, Buffer);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_ACMD51): ReadBlockData Error and Status = %r\n", __func__, Status));\r
+ return Status;\r
+ }\r
+ CopyMem (&Scr, Buffer, 8);\r
+ if (Scr.SD_SPEC == 2) {\r
+ if (Scr.SD_SPEC3 == 1) {\r
+ if (Scr.SD_SPEC4 == 1) {\r
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 4.xx\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 3.0x\n"));\r
+ }\r
+ } else {\r
+ if (Scr.SD_SPEC4 == 0) {\r
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 2.0\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));\r
+ }\r
+ }\r
+ } else {\r
+ if ((Scr.SD_SPEC3 == 0) && (Scr.SD_SPEC4 == 0)) {\r
+ if (Scr.SD_SPEC == 1) {\r
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.10\n"));\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "Found SD Card for Spec Version 1.0\n"));\r
+ }\r
+ } else {\r
+ DEBUG ((EFI_D_ERROR, "Found invalid SD Card\n"));\r
+ }\r
+ }\r
+ }\r
+ if (CccSwitch) {\r
+ /* SD Switch, Mode:1, Group:0, Value:1 */\r
+ CmdArg = 1 << 31 | 0x00FFFFFF;\r
+ CmdArg &= ~(0xF << (0 * 4));\r
+ CmdArg |= 1 << (0 * 4);\r
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, CmdArg);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));\r
+ return Status;\r
+ } else {\r
+ Status = MmcHost->ReadBlockData (MmcHost, 0, 64, Buffer);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): ReadBlockData Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ }\r
+ }\r
+ if (Scr.SD_BUS_WIDTHS & SD_BUS_WIDTH_4BIT) {\r
+ CmdArg = MmcHostInstance->CardInfo.RCA << 16;\r
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD55, CmdArg);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD55): Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ /* Width: 4 */\r
+ Status = MmcHost->SendCommand (MmcHost, MMC_CMD6, 2);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(MMC_CMD6): Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ }\r
+ if (MMC_HOST_HAS_SETIOS(MmcHost)) {\r
+ Status = MmcHost->SetIos (MmcHost, 26 * 1000 * 1000, 4, EMMCBACKWARD);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a(SetIos): Error and Status = %r\n", Status));\r
+ return Status;\r
+ }\r
+ }\r