[U-Boot] [PATCH 12/14] mmc: Add support for Xilinx Zynq sdhci controller

[Michal Simek]

Add support for SD, MMC and eMMC card on Xilinx Zynq.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---
 arch/arm/include/asm/arch-zynq/hardware.h  |  2 ++
 arch/arm/include/asm/arch-zynq/sys_proto.h |  3 +++
 board/xilinx/zynq/board.c                  | 17 +++++++++++++
 drivers/mmc/Makefile                       |  1 +
 drivers/mmc/zynq_sdhci.c                   | 40 ++++++++++++++++++++++++++++++
 include/configs/zynq.h                     | 16 ++++++++++++
 6 files changed, 79 insertions(+)
 create mode 100644 drivers/mmc/zynq_sdhci.c

diff --git a/arch/arm/include/asm/arch-zynq/hardware.h b/arch/arm/include/asm/arch-zynq/hardware.h
index e0f6eba..3fa94d7 100644
--- a/arch/arm/include/asm/arch-zynq/hardware.h
+++ b/arch/arm/include/asm/arch-zynq/hardware.h
@@ -29,6 +29,8 @@
 #define CONFIG_SCUTIMER_BASEADDR	0xF8F00600
 #define CONFIG_ZYNQ_GEM_BASEADDR0	0xE000B000
 #define CONFIG_ZYNQ_GEM_BASEADDR1	0xE000C000
+#define CONFIG_ZYNQ_SDHCI_BASEADDR0	0xE0100000
+#define CONFIG_ZYNQ_SDHCI_BASEADDR1	0xE0101000

 /* Reflect slcr offsets */
 struct slcr_regs {
diff --git a/arch/arm/include/asm/arch-zynq/sys_proto.h b/arch/arm/include/asm/arch-zynq/sys_proto.h
index 57128dc..af9e7f8 100644
--- a/arch/arm/include/asm/arch-zynq/sys_proto.h
+++ b/arch/arm/include/asm/arch-zynq/sys_proto.h
@@ -28,4 +28,7 @@ extern void zynq_slcr_unlock(void);
 extern void zynq_slcr_cpu_reset(void);
 extern void zynq_slcr_gem_clk_setup(u32 gem_id, u32 rclk, u32 clk);

+/* Driver extern functions */
+extern int zynq_sdhci_init(u32 regbase);
+
 #endif /* _SYS_PROTO_H_ */
diff --git a/board/xilinx/zynq/board.c b/board/xilinx/zynq/board.c
index 574a6fb..e42febd 100644
--- a/board/xilinx/zynq/board.c
+++ b/board/xilinx/zynq/board.c
@@ -54,6 +54,23 @@ int board_eth_init(bd_t *bis)
 }
 #endif

+#ifdef CONFIG_CMD_MMC
+int board_mmc_init(bd_t *bd)
+{
+	int ret = 0;
+
+#if defined(CONFIG_ZYNQ_SDHCI)
+# if defined(CONFIG_ZYNQ_SDHCI0)
+	ret = zynq_sdhci_init(CONFIG_ZYNQ_SDHCI_BASEADDR0);
+# endif
+# if defined(CONFIG_ZYNQ_SDHCI1)
+	ret |= zynq_sdhci_init(CONFIG_ZYNQ_SDHCI_BASEADDR1);
+# endif
+#endif
+	return ret;
+}
+#endif
+
 int dram_init(void)
 {
 	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 1d6faa2..7cd4281 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -49,6 +49,7 @@ COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
 COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o
 COBJS-$(CONFIG_DWMMC) += dw_mmc.o
 COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
+COBJS-$(CONFIG_ZYNQ_SDHCI) += zynq_sdhci.o

 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
new file mode 100644
index 0000000..9e37af4
--- /dev/null
+++ b/drivers/mmc/zynq_sdhci.c
@@ -0,0 +1,40 @@
+/*
+ * (C) Copyright 2013 Inc.
+ *
+ * Xilinx Zynq SD Host Controller Interface
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License version 2 as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <sdhci.h>
+#include <asm/arch/sys_proto.h>
+
+int zynq_sdhci_init(u32 regbase)
+{
+	struct sdhci_host *host = NULL;
+
+	host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
+	if (!host) {
+		printf("zynq_sdhci_init: sdhci_host malloc fail\n");
+		return 1;
+	}
+
+	host->name = "zynq_sdhci";
+	host->ioaddr = (void *)regbase;
+	host->quirks = SDHCI_QUIRK_NO_CD | SDHCI_QUIRK_WAIT_SEND_CMD;
+	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+
+	host->host_caps = MMC_MODE_HC;
+
+	add_sdhci(host, 52000000, 52000000 >> 9);
+	return 0;
+}
diff --git a/include/configs/zynq.h b/include/configs/zynq.h
index 3b23354..2ed88a7 100644
--- a/include/configs/zynq.h
+++ b/include/configs/zynq.h
@@ -56,6 +56,22 @@
 #define CONFIG_ZYNQ_GEM0
 #define CONFIG_ZYNQ_GEM_PHY_ADDR0	7

+#define CONFIG_ZYNQ_SDHCI
+#define CONFIG_ZYNQ_SDHCI0
+
+/* MMC */
+#if defined(CONFIG_ZYNQ_SDHCI0) || defined(CONFIG_ZYNQ_SDHCI1)
+# define CONFIG_MMC
+# define CONFIG_GENERIC_MMC
+# define CONFIG_SDHCI
+# define CONFIG_ZYNQ_SDHCI
+# define CONFIG_CMD_MMC
+# define CONFIG_CMD_FAT
+# define CONFIG_SUPPORT_VFAT
+# define CONFIG_CMD_EXT2
+# define CONFIG_DOS_PARTITION
+#endif
+
 #if defined(CONFIG_ZYNQ_DCC)
 # define CONFIG_ARM_DCC
 # define CONFIG_CPU_V6 /* Required by CONFIG_ARM_DCC */
--
1.8.2.1

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