Re: [Gumstix-users] How to add NAND flash partition in Overo Firestrom ?

[tuxnoel <tu...@ya...>]

turns out we have to modify 
struct mtd_partition overo_nand_partitions[]
 in  arch/arm/mach-omap2/board-overo.c   (kernel 3.0.0)

before

static struct mtd_partition overo_nand_partitions[] = {
	{
		.name           = "xloader",
		.offset         = 0,			/* Offset = 0x00000 */
		.size           = 4 * NAND_BLOCK_SIZE,
		.mask_flags     = MTD_WRITEABLE
	},
	{
		.name           = "uboot",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size           = 14 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "uboot environment",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x240000 */
		.size           = 2 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "linux",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size           = 32 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "rootfs",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size           = MTDPART_SIZ_FULL,
	},
};



after

static struct mtd_partition overo_nand_partitions[] = {
	{
		.name           = "xloader",
		.offset         = 0,			/* Offset = 0x00000 */
		.size           = 4 * NAND_BLOCK_SIZE,
		.mask_flags     = MTD_WRITEABLE
	},
	{
		.name           = "uboot",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size           = 14 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "uboot environment",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x240000 */
		.size           = 2 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "working_linux",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size           = 32 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "working_rootfs",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		//.size           = MTDPART_SIZ_FULL,
		.size			= 2412 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "golden_linux",		
		.offset         = MTDPART_OFS_APPEND,	 
		.size           = 32 * NAND_BLOCK_SIZE,  /*4MB for golden linux kernel*/
	},	
	{
		.name           = "golden_rootfs",
		.offset         = MTDPART_OFS_APPEND,	 
		.size           = MTDPART_SIZ_FULL,		/*200MB for golden rootfs*/
	},
};

and enable mtd partition support in kernel





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