ARM: OMAP2/3: Add generic onenand support when connected to GPMC

Add generic onenand support when connected to GPMC and make the
boards to use it.

The patch has been modified to make it more generic to support all
the boards with GPMC. The patch also remove unused prototype for
omap2_onenand_rephase(void).

Note that board-apollon.c is currently using the MTD_ONENAND_GENERIC
and setting the GPMC timings in the bootloader. Setting the GPMC
timings in the bootloader will not allow supporting frequency
scaling for the onenand source clock.

Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/rx51_defconfig

@@ -282,7 +282,7 @@ CONFIG_ALIGNMENT_TRAP=y
 #
 CONFIG_ZBOOT_ROM_TEXT=0x0
 CONFIG_ZBOOT_ROM_BSS=0x0
-CONFIG_CMDLINE="init=/sbin/preinit ubi.mtd=4 root=ubi0:rootfs rootfstype=ubifs rw console=ttyMTD5"
+CONFIG_CMDLINE="init=/sbin/preinit ubi.mtd=rootfs root=ubi0:rootfs rootfstype=ubifs rootflags=bulk_read,no_chk_data_crc rw console=ttyMTD,log console=tty0"
 # CONFIG_XIP_KERNEL is not set
 # CONFIG_KEXEC is not set
 

arch/arm/mach-omap2/Makefile

@@ -58,3 +58,6 @@ obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51.o \
 ifeq ($(CONFIG_USB_MUSB_SOC),y)
 obj-y					+= usb-musb.o
 endif
+
+onenand-$(CONFIG_MTD_ONENAND_OMAP2)	:= gpmc-onenand.o
+obj-y					+= $(onenand-m) $(onenand-y)

arch/arm/mach-omap2/board-rx51-peripherals.c

@@ -27,6 +27,7 @@
 #include <mach/dma.h>
 #include <mach/gpmc.h>
 #include <mach/keypad.h>
+#include <mach/onenand.h>
 
 #include "mmc-twl4030.h"
 
@@ -408,12 +409,69 @@ static int __init rx51_i2c_init(void)
 	return 0;
 }
 
+#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
+	defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
+
+static struct mtd_partition onenand_partitions[] = {
+	{
+		.name           = "bootloader",
+		.offset         = 0,
+		.size           = 0x20000,
+		.mask_flags     = MTD_WRITEABLE,	/* Force read-only */
+	},
+	{
+		.name           = "config",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 0x60000,
+	},
+	{
+		.name           = "log",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 0x40000,
+	},
+	{
+		.name           = "kernel",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 0x200000,
+	},
+	{
+		.name           = "initfs",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 0x200000,
+	},
+	{
+		.name           = "rootfs",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = MTDPART_SIZ_FULL,
+	},
+};
+
+static struct omap_onenand_platform_data board_onenand_data = {
+	.cs		= 0,
+	.gpio_irq	= 65,
+	.parts		= onenand_partitions,
+	.nr_parts	= ARRAY_SIZE(onenand_partitions),
+};
+
+static void __init board_onenand_init(void)
+{
+	gpmc_onenand_init(&board_onenand_data);
+}
+
+#else
+
+static inline void board_onenand_init(void)
+{
+}
+
+#endif
 
 void __init rx51_peripherals_init(void)
 {
 	platform_add_devices(rx51_peripherals_devices,
 				ARRAY_SIZE(rx51_peripherals_devices));
 	rx51_i2c_init();
 	rx51_init_smc91x();
+	board_onenand_init();
 }