x86: crownbay: Add SDHCI support

There are two standard SD card slots on the Crown Bay board, which
are connected to the Topcliff PCH SDIO controllers. Enable the SDHC
support so that we can use them.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/queensbay/Makefile

@@ -4,6 +4,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y += tnc_car.o tnc_dram.o tnc.o
+obj-y += tnc_car.o tnc_dram.o tnc.o topcliff.o
 obj-y += fsp_configs.o fsp_support.o
 obj-$(CONFIG_PCI) += tnc_pci.o

arch/x86/cpu/queensbay/topcliff.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <malloc.h>
+#include <pci.h>
+#include <pci_ids.h>
+#include <sdhci.h>
+
+static struct pci_device_id mmc_supported[] = {
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_0 },
+	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TCF_SDIO_1 },
+	{ }
+};
+
+int cpu_mmc_init(bd_t *bis)
+{
+	struct sdhci_host *mmc_host;
+	pci_dev_t devbusfn;
+	u32 iobase;
+	int ret;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mmc_supported); i++) {
+		devbusfn =  pci_find_devices(mmc_supported, i);
+		if (devbusfn == -1)
+			return -ENODEV;
+
+		mmc_host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
+		if (!mmc_host)
+			return -ENOMEM;
+
+		mmc_host->name = "Topcliff SDHCI";
+		pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_0, &iobase);
+		mmc_host->ioaddr = (void *)iobase;
+		mmc_host->quirks = 0;
+		ret = add_sdhci(mmc_host, 0, 0);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}

include/configs/crownbay.h

@@ -48,6 +48,12 @@
 
 #define CONFIG_SPI_FLASH_SST
 
+#define CONFIG_MMC
+#define CONFIG_SDHCI
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC_SDMA
+#define CONFIG_CMD_MMC
+
 /* Video is not supported */
 #undef CONFIG_VIDEO
 #undef CONFIG_CFB_CONSOLE