sh: sh7757lcr: add supporting for MMCIF

The sh7757lcr has 2GByte eMMC chip. This patch supports it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/sh7757lcr/sh7757lcr.c

@@ -263,6 +263,11 @@ int dram_init(void)
 	return 0;
 }
 
+int board_mmc_init(bd_t *bis)
+{
+	return mmcif_mmc_init();
+}
+
 static int get_sh_eth_mac_raw(unsigned char *buf, int size)
 {
 	struct spi_flash *spi;

doc/README.sh7757lcr

@@ -12,6 +12,7 @@ The R0P7757LC0030RL(board config name:sh7757lcr) has the following device:
  - SPI ROM 8MB
  - 2D Graphic controller
  - Ethernet controller
+ - eMMC 2GB
 
 
 configuration for This board:

include/configs/sh7757lcr.h

@@ -49,6 +49,10 @@
 #define CONFIG_CMD_MD5SUM
 #define CONFIG_MD5
 #define CONFIG_CMD_LOADS
+#define CONFIG_CMD_MMC
+#define CONFIG_CMD_EXT2
+#define CONFIG_DOS_PARTITION
+#define CONFIG_MAC_PARTITION
 
 #define CONFIG_BAUDRATE		115200
 #define CONFIG_BOOTDELAY	3
@@ -123,6 +127,13 @@
 #define CONFIG_SPI_FLASH
 #define CONFIG_SPI_FLASH_STMICRO	1
 
+/* MMCIF */
+#define CONFIG_MMC			1
+#define CONFIG_GENERIC_MMC		1
+#define CONFIG_SH_MMCIF			1
+#define CONFIG_SH_MMCIF_ADDR		0xffcb0000
+#define CONFIG_SH_MMCIF_CLK		48000000
+
 /* SH7757 board */
 #define SH7757LCR_SDRAM_PHYS_TOP	0x40000000
 #define SH7757LCR_GRA_OFFSET		0x1f000000