ARM: atmel: add at91sam9g20ek_2mmc nand boot support

Add at91sam9g20_2mmc nand boot support. on this board, there is no
dataflash, so disable it

change one commet for at91sam9g20ek board

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

board/atmel/at91sam9260ek/at91sam9260ek.c

@@ -157,12 +157,17 @@ int board_early_init_f(void)
 
 int board_init(void)
 {
+#ifdef CONFIG_AT91SAM9G20EK_2MMC
+	/* arch number of AT91SAM9G20EK_2MMC-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK_2MMC;
+#else
 #ifdef CONFIG_AT91SAM9G20EK
-	/* arch number of AT91SAM9260EK-Board */
+	/* arch number of AT91SAM9G20EK-Board */
 	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9G20EK;
 #else
 	/* arch number of AT91SAM9260EK-Board */
 	gd->bd->bi_arch_number = MACH_TYPE_AT91SAM9260EK;
+#endif
 #endif
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

boards.cfg

@@ -95,6 +95,7 @@ at91sam9g10ek_nandflash      arm         arm926ejs   at91sam9261ek       atmel
 at91sam9g20ek_dataflash_cs0  arm         arm926ejs   at91sam9260ek       atmel          at91        at91sam9260ek:AT91SAM9G20,SYS_USE_DATAFLASH_CS0
 at91sam9g20ek_dataflash_cs1  arm         arm926ejs   at91sam9260ek       atmel          at91        at91sam9260ek:AT91SAM9G20,SYS_USE_DATAFLASH_CS1
 at91sam9g20ek_nandflash      arm         arm926ejs   at91sam9260ek       atmel          at91        at91sam9260ek:AT91SAM9G20,SYS_USE_NANDFLASH
+at91sam9g20ek_2mmc_nandflash arm         arm926ejs   at91sam9260ek       atmel          at91        at91sam9260ek:AT91SAM9G20,AT91SAM9G20EK_2MMC,SYS_USE_NANDFLASH
 at91sam9m10g45ek_nandflash   arm         arm926ejs   at91sam9m10g45ek    atmel          at91        at91sam9m10g45ek:AT91SAM9M10G45,SYS_USE_NANDFLASH
 at91sam9rlek_dataflash       arm         arm926ejs   at91sam9rlek        atmel          at91        at91sam9rlek:AT91SAM9RL,SYS_USE_DATAFLASH
 at91sam9rlek_nandflash       arm         arm926ejs   at91sam9rlek        atmel          at91        at91sam9rlek:AT91SAM9RL,SYS_USE_NANDFLASH

include/configs/at91sam9260ek.h

@@ -126,6 +126,7 @@
 #endif
 
 /* DataFlash */
+#ifndef CONFIG_AT91SAM9G20EK_2MMC
 #define CONFIG_ATMEL_DATAFLASH_SPI
 #define CONFIG_HAS_DATAFLASH		1
 #define CONFIG_SYS_SPI_WRITE_TOUT		(5*CONFIG_SYS_HZ)
@@ -133,6 +134,7 @@
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS0	0xC0000000	/* CS0 */
 #define CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS1	0xD0000000	/* CS1 */
 #define AT91_SPI_CLK			15000000
+#endif
 
 #ifdef CONFIG_AT91SAM9G20EK
 #define DATAFLASH_TCSS			(0x22 << 16)