mpc83xx: MPC837XERDB: Add support for FSL eSDHC

This patch adds support for eSDHC on MPC837XERDB boards. The WP
switch doesn't seem to work on RDB boards though, the WP pin is
always asserted (can see the pin state when it's in GPIO mode).

FSL DR USB and FSL eSDHC are mutually exclusive because of pins
multiplexing, so user should specify 'esdhc' or 'dr_usb' options
in the hwconfig environment variable to choose between the
devices.

p.s.
Now we're very close to a monitor len limit (196 bytes left using
gcc-4.2.0), so also increase the monitor len by one sector (64 KB).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>

board/freescale/mpc837xerdb/mpc837xerdb.c

@@ -13,12 +13,14 @@
  */
 
 #include <common.h>
+#include <hwconfig.h>
 #include <i2c.h>
 #include <asm/io.h>
 #include <asm/fsl_serdes.h>
 #include <fdt_support.h>
 #include <spd_sdram.h>
 #include <vsc7385.h>
+#include <fsl_esdhc.h>
 
 #if defined(CONFIG_SYS_DRAM_TEST)
 int
@@ -166,6 +168,21 @@ int board_early_init_f(void)
 	return 0;
 }
 
+#ifdef CONFIG_FSL_ESDHC
+int board_mmc_init(bd_t *bd)
+{
+	struct immap __iomem *im = (struct immap __iomem *)CONFIG_SYS_IMMR;
+
+	if (!hwconfig("esdhc"))
+		return 0;
+
+	clrsetbits_be32(&im->sysconf.sicrl, SICRL_USB_B, SICRL_USB_B_SD);
+	clrsetbits_be32(&im->sysconf.sicrh, SICRH_SPI, SICRH_SPI_SD);
+
+	return fsl_esdhc_mmc_init(bd);
+}
+#endif
+
 /*
  * Miscellaneous late-boot configurations
  *
@@ -195,5 +212,6 @@ void ft_board_setup(void *blob, bd_t *bd)
 #endif
 	ft_cpu_setup(blob, bd);
 	fdt_fixup_dr_usb(blob, bd);
+	fdt_fixup_esdhc(blob, bd);
 }
 #endif /* CONFIG_OF_BOARD_SETUP */

include/configs/MPC837XERDB.h

@@ -34,6 +34,7 @@
 
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_MISC_INIT_R
+#define CONFIG_HWCONFIG
 
 /*
  * On-board devices
@@ -229,6 +230,7 @@
 #endif
 
 #define CONFIG_SYS_MONITOR_LEN		(384 * 1024) /* Reserve 384 kB for Mon */
+#define CONFIG_SYS_MONITOR_LEN		(320 * 1024) /* Reserve 320 kB for Mon */
 #define CONFIG_SYS_MALLOC_LEN		(512 * 1024) /* Reserved for malloc */
 
 /*
@@ -342,6 +344,9 @@
 #define CONFIG_OF_BOARD_SETUP	1
 #define CONFIG_OF_STDOUT_VIA_ALIAS 1
 
+#define CONFIG_SYS_64BIT_STRTOUL		1
+#define CONFIG_SYS_64BIT_VSPRINTF		1
+
 /* I2C */
 #define CONFIG_HARD_I2C		/* I2C with hardware support */
 #undef	CONFIG_SOFT_I2C		/* I2C bit-banged */
@@ -510,6 +515,18 @@
 
 #undef CONFIG_WATCHDOG		/* watchdog disabled */
 
+#define CONFIG_MMC     1
+
+#ifdef CONFIG_MMC
+#define CONFIG_FSL_ESDHC
+#define CONFIG_SYS_FSL_ESDHC_ADDR	CONFIG_SYS_MPC83xx_ESDHC_ADDR
+#define CONFIG_CMD_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FAT
+#define CONFIG_DOS_PARTITION
+#endif
+
 /*
  * Miscellaneous configurable options
  */