powerpc/85xx: Add eSDHC support on P2020DS

We enable SDHC_CD and SDHC_WP signals (pin muxed with GPIO8 & GPIO9
respectively).

We enable EXT2, FAT, and parition support for both MMC & USB configs.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

board/freescale/p2020ds/p2020ds.c

@@ -44,6 +44,19 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+int board_early_init_f(void)
+{
+#ifdef CONFIG_MMC
+	ccsr_gur_t *gur = (ccsr_gur_t *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+
+	setbits_be32(&gur->pmuxcr,
+			 (MPC85xx_PMUXCR_SDHC_CD |
+			 MPC85xx_PMUXCR_SDHC_WP));
+#endif
+
+	return 0;
+}
+
 int checkboard(void)
 {
 	u8 sw;

include/configs/P2020DS.h

@@ -78,6 +78,8 @@
 #define CONFIG_L2_CACHE			/* toggle L2 cache */
 #define CONFIG_BTB			/* toggle branch predition */
 
+#define CONFIG_BOARD_EARLY_INIT_F	/* Call board_pre_init */
+
 #define CONFIG_ENABLE_36BIT_PHYS	1
 
 #ifdef CONFIG_PHYS_64BIT
@@ -605,15 +607,36 @@
 /*
  * USB
  */
+#define CONFIG_USB_EHCI
+
+#ifdef CONFIG_USB_EHCI
 #define CONFIG_CMD_USB
 #define CONFIG_USB_STORAGE
-#define CONFIG_USB_EHCI
 #define CONFIG_USB_EHCI_FSL
 #define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#endif
 
 #undef CONFIG_WATCHDOG			/* watchdog disabled */
 
 /*
+ * SDHC/MMC
+ */
+#define CONFIG_MMC
+
+#ifdef CONFIG_MMC
+#define CONFIG_FSL_ESDHC
+#define CONFIG_SYS_FSL_ESDHC_ADDR	CONFIG_SYS_MPC85xx_ESDHC_ADDR
+#define CONFIG_CMD_MMC
+#define CONFIG_GENERIC_MMC
+#endif
+
+#if defined(CONFIG_MMC) || defined(CONFIG_USB_EHCI)
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+#define CONFIG_DOS_PARTITION
+#endif
+
+/*
  * Miscellaneous configurable options
  */
 #define CONFIG_SYS_LONGHELP			/* undef to save memory	*/