u-boot port [NAND support]

board.c

Files changed for adding NAND support

1.arch/arm/include/asm/arch-am33xx/mem.h
2.board/ti/am335x/board.c
3.board/ti/am335x/board.h
4.board/ti/am335x/mux.c
5.include/configs/am335x_evm.h



1.arch/arm/include/asm/arch-am33xx/mem.h

+#define M_NAND_GPMC_CONFIG1	0x00001800



2.board/ti/am335x/board.c
+	/* Enable 16-bit NAND */
+	enable_nand_pin_mux();
+



3.board/ti/am335x/board.h
 
+void enable_nand_pin_mux(void);



4.board/ti/am335x/mux.c

+static struct module_pin_mux nand16_pin_mux[] = {
+	{OFFSET(gpmc_ad8), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD8 */
+	{OFFSET(gpmc_ad9), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD9 */
+	{OFFSET(gpmc_ad10), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD10 */
+	{OFFSET(gpmc_ad11), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD11 */
+	{OFFSET(gpmc_ad12), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD12 */
+	{OFFSET(gpmc_ad13), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD13 */
+	{OFFSET(gpmc_ad14), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD14 */
+	{OFFSET(gpmc_ad15), (MODE(0) | PULLUP_EN | RXACTIVE)},	/* NAND AD15 */
+	{-1},
+};
+


+void enable_nand_pin_mux(void)
+{
+	configure_module_pin_mux(nand_pin_mux);
+	configure_module_pin_mux(nand16_pin_mux);
+}




5.include/configs/am335x_evm.h


+#define CONFIG_SPL_NAND_SUPPORT

+#define CONFIG_NAND

Thease files changed to add NAND support
With these changes u-boot.img can be palced in NAND and it can 
boot from NAND directly