ARM: omap: move board specific NAND configs out from ti_armv7_common.h

This patch moves some board specific NAND configs:
- FROM: generic config file 'ti_armv7_common.h'
- TO:   individual board config files using these configs.
So that each board can independently set the value as per its design.

Following configs are affected in this patch:
  CONFIG_SYS_NAND_U_BOOT_OFFS: <refer doc/README.nand>
  CONFIG_CMD_SPL_NAND_OFS: <refer doc/README.falcon>
  CONFIG_SYS_NAND_SPL_KERNEL_OFFS: <refer doc/README.falcon>
  CONFIG_CMD_SPL_WRITE_SIZE: <refer doc/README.falcon>

This patch also updates documentation for few of above NAND configs.

Signed-off-by: Pekon Gupta <pekon@ti.com>

doc/README.nand

@@ -89,6 +89,10 @@ Commands:
 
 Configuration Options:
 
+   CONFIG_SYS_NAND_U_BOOT_OFFS
+	NAND Offset from where SPL will read u-boot image. This is the starting
+	address of u-boot MTD partition in NAND.
+
    CONFIG_CMD_NAND
       Enables NAND support and commmands.
 
@@ -226,6 +230,14 @@ Platform specific options
 	detection. However ECC calculation on such plaforms would still be
 	done by GPMC controller.
 
+   CONFIG_SPL_NAND_AM33XX_BCH
+	Enables SPL-NAND driver (am335x_spl_bch.c) which supports ELM based
+        hardware ECC correction. This is useful for platforms which have ELM
+	hardware engine and use NAND boot mode.
+	Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
+	so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
+        SPL-NAND driver with software ECC correction support.
+
    CONFIG_NAND_OMAP_ECCSCHEME
 	On OMAP platforms, this CONFIG specifies NAND ECC scheme.
 	It can take following values:

include/configs/am335x_evm.h

@@ -254,6 +254,11 @@
 #define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_BCH8_CODE_HW
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS	0x00080000 /* os parameters */
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x00200000 /* kernel offset */
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 #endif
 #endif
 

include/configs/cm_t335.h

@@ -150,6 +150,11 @@
 #define CONFIG_ENV_OFFSET		0x300000 /* environment starts here */
 #define CONFIG_SYS_ENV_SECT_SIZE	(128 << 10)	/* 128 KiB */
 #define CONFIG_SYS_NAND_ONFI_DETECTION
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x400000 /* un-assigned: (using dtb) */
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x500000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 
 /* GPIO pin + bank to pin ID mapping */
 #define GPIO_PIN(_bank, _pin)		((_bank << 5) + _pin)

include/configs/omap3_beagle.h

@@ -303,5 +303,11 @@
 #define CONFIG_SYS_NAND_ECCBYTES	3
 #define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_HW
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x240000
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x280000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 
 #endif /* __CONFIG_H */

include/configs/omap3_igep00x0.h

@@ -196,6 +196,13 @@
 #define CONFIG_SYS_NAND_ECCSIZE		512
 #define CONFIG_SYS_NAND_ECCBYTES	3
 #define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_HW
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x240000
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x280000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 #endif
 
 #endif /* __IGEP00X0_H */

include/configs/omap3_overo.h

@@ -216,5 +216,11 @@
 #define CONFIG_NAND_OMAP_ECCSCHEME	OMAP_ECC_HAM1_CODE_HW
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x240000
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x280000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 
 #endif				/* __CONFIG_H */

include/configs/omap3_zoom1.h

@@ -70,6 +70,12 @@
 					"4m(kernel),-(fs)"
 
 #if defined(CONFIG_CMD_NAND)
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x240000
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x280000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 #define CONFIG_CMD_NAND_LOCK_UNLOCK /* Enable lock/unlock support */
 #endif
 

include/configs/pengwyn.h

@@ -159,6 +159,12 @@
 #define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_OFFSET		0x260000 /* environment starts here */
 #define CONFIG_SYS_ENV_SECT_SIZE	(128 << 10)	/* 128 KiB */
+/* NAND: SPL falcon mode configs */
+#ifdef CONFIG_SPL_OS_BOOT
+#define CONFIG_CMD_SPL_NAND_OFS		0x240000 /* un-assigned */
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS	0x280000
+#define CONFIG_CMD_SPL_WRITE_SIZE	0x2000
+#endif
 
 /*
  * USB configuration.  We enable MUSB support, both for host and for

include/configs/ti_armv7_common.h

@@ -243,13 +243,6 @@
 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
 
-/* NAND */
-#ifdef CONFIG_NAND
-#define CONFIG_CMD_SPL_NAND_OFS			0x240000 /* end of u-boot */
-#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS		0x280000
-#define CONFIG_CMD_SPL_WRITE_SIZE		0x2000
-#endif
-
 /* spl export command */
 #define CONFIG_CMD_SPL
 #endif
@@ -275,7 +268,6 @@
 #define CONFIG_SPL_NAND_ECC
 #define CONFIG_SPL_MTD_SUPPORT
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
-#define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
 #endif
 #endif /* !CONFIG_NOR_BOOT */