am335x_evm: Make NAND support modular

Give the user the ability to disable NAND support by defining
CONFIG_NO_NAND. This will allow custom hardware to easily support
this configuration.

Signed-off-by: Justin Waters <justin.waters@timesys.com>

2 files changed, 39 insertions, 26 deletions

diff --git a/boards.cfg b/boards.cfg
index 6a368de800..8f1b4717d2 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -241,14 +241,14 @@ integratorcp_cm946es         arm         arm946es    integrator          armltd
 vexpress_ca15_tc2            arm         armv7       vexpress            armltd
 vexpress_ca5x2               arm         armv7       vexpress            armltd
 vexpress_ca9x4               arm         armv7       vexpress            armltd
-am335x_evm                   arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1
-am335x_evm_spiboot           arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,SPI_BOOT
-am335x_evm_uart1             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL2,CONS_INDEX=2
-am335x_evm_uart2             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL3,CONS_INDEX=3
-am335x_evm_uart3             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL4,CONS_INDEX=4
-am335x_evm_uart4             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL5,CONS_INDEX=5
-am335x_evm_uart5             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL6,CONS_INDEX=6
-am335x_evm_usbspl            arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,SPL_USBETH_SUPPORT
+am335x_evm                   arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,NAND
+am335x_evm_spiboot           arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,NAND,SPI_BOOT
+am335x_evm_uart1             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL2,CONS_INDEX=2,NAND
+am335x_evm_uart2             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL3,CONS_INDEX=3,NAND
+am335x_evm_uart3             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL4,CONS_INDEX=4,NAND
+am335x_evm_uart4             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL5,CONS_INDEX=5,NAND
+am335x_evm_uart5             arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL6,CONS_INDEX=6,NAND
+am335x_evm_usbspl            arm         armv7       am335x              ti             am33xx      am335x_evm:SERIAL1,CONS_INDEX=1,NAND,SPL_USBETH_SUPPORT
 ti814x_evm                   arm         armv7       ti814x              ti             am33xx
 pcm051                       arm         armv7       pcm051              phytec         am33xx      pcm051
 sama5d3xek_mmc               arm         armv7       sama5d3xek          atmel          at91        sama5d3xek:SAMA5D3,SYS_USE_MMC
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index c5a6d4b315..c53bc21c62 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -48,6 +48,27 @@
 #define CONFIG_CMD_ASKENV
 #define CONFIG_VERSION_VARIABLE
 
+#ifdef CONFIG_NAND
+#define NANDARGS \
+	"mtdids=" MTDIDS_DEFAULT "\0" \
+	"mtdparts=" MTDPARTS_DEFAULT "\0" \
+	"nandargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${nandroot} " \
+		"rootfstype=${nandrootfstype}\0" \
+	"dfu_alt_info_nand=" DFU_ALT_INFO_NAND "\0" \
+	"nandroot=ubi0:rootfs rw ubi.mtd=7,2048\0" \
+	"nandrootfstype=ubifs rootwait=1\0" \
+	"nandsrcaddr=0x280000\0" \
+		"nandboot=echo Booting from nand ...; " \
+		"run nandargs; " \
+		"nand read ${loadaddr} ${nandsrcaddr} ${nandimgsize}; " \
+		"bootm ${loadaddr}\0" \
+	"nandimgsize=0x500000\0"
+#else
+#define NANDARGS ""
+#endif
+
 /* set to negative value for no autoboot */
 #define CONFIG_BOOTDELAY		1
 #define CONFIG_ENV_VARS_UBOOT_CONFIG
@@ -63,19 +84,12 @@
 	"fdtfile=undefined\0" \
 	"console=ttyO0,115200n8\0" \
 	"optargs=\0" \
-	"mtdids=" MTDIDS_DEFAULT "\0" \
-	"mtdparts=" MTDPARTS_DEFAULT "\0" \
 	"dfu_alt_info_mmc=" DFU_ALT_INFO_MMC "\0" \
 	"dfu_alt_info_emmc=rawemmc mmc 0 3751936\0" \
-	"dfu_alt_info_nand=" DFU_ALT_INFO_NAND "\0" \
 	"mmcdev=0\0" \
 	"mmcroot=/dev/mmcblk0p2 ro\0" \
 	"mmcrootfstype=ext4 rootwait\0" \
 	"bootpart=0:2\0" \
-	"nandroot=ubi0:rootfs rw ubi.mtd=7,2048\0" \
-	"nandrootfstype=ubifs rootwait=1\0" \
-	"nandsrcaddr=0x280000\0" \
-	"nandimgsize=0x500000\0" \
 	"rootpath=/export/rootfs\0" \
 	"nfsopts=nolock\0" \
 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
@@ -86,10 +100,6 @@
 		"${optargs} " \
 		"root=${mmcroot} " \
 		"rootfstype=${mmcrootfstype}\0" \
-	"nandargs=setenv bootargs console=${console} " \
-		"${optargs} " \
-		"root=${nandroot} " \
-		"rootfstype=${nandrootfstype}\0" \
 	"spiroot=/dev/mtdblock4 rw\0" \
 	"spirootfstype=jffs2\0" \
 	"spisrcaddr=0xe0000\0" \
@@ -118,10 +128,6 @@
 	"mmcboot=echo Booting from mmc ...; " \
 		"run mmcargs; " \
 		"bootm ${loadaddr} - ${fdtaddr}\0" \
-	"nandboot=echo Booting from nand ...; " \
-		"run nandargs; " \
-		"nand read ${loadaddr} ${nandsrcaddr} ${nandimgsize}; " \
-		"bootm ${loadaddr}\0" \
 	"spiboot=echo Booting from spi ...; " \
 		"run spiargs; " \
 		"sf probe ${spibusno}:0; " \
@@ -147,7 +153,8 @@
 		"if test $board_name = A335X_SK; then " \
 			"setenv fdtfile am335x-evmsk.dtb; fi; " \
 		"if test $fdtfile = undefined; then " \
-			"echo WARNING: Could not determine device tree to use; fi; \0"
+			"echo WARNING: Could not determine device tree to use; fi; \0" \
+	NANDARGS
 #endif
 
 #define CONFIG_BOOTCOMMAND \
@@ -231,7 +238,6 @@
 /* USB Device Firmware Update support */
 #define CONFIG_DFU_FUNCTION
 #define CONFIG_DFU_MMC
-#define CONFIG_DFU_NAND
 #define CONFIG_CMD_DFU
 #define DFU_ALT_INFO_MMC \
 	"boot part 0 1;" \
@@ -241,6 +247,8 @@
 	"u-boot.img.raw mmc 300 3C0;" \
 	"u-boot.img fat 0 1;" \
 	"uEnv.txt fat 0 1"
+#ifdef CONFIG_NAND
+#define CONFIG_DFU_NAND
 #define DFU_ALT_INFO_NAND \
 	"SPL part 0 1;" \
 	"SPL.backup1 part 0 2;" \
@@ -249,6 +257,7 @@
 	"u-boot part 0 5;" \
 	"kernel part 0 7;" \
 	"rootfs part 0 8"
+#endif
 
  /* Physical Memory Map */
 #define CONFIG_NR_DRAM_BANKS		1		/*  1 bank of DRAM */
@@ -337,9 +346,11 @@
 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	8     /* 4KB */
 
 /* 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		0x1000
+#endif
 
 /* spl export command */
 #define CONFIG_CMD_SPL
@@ -369,6 +380,8 @@
 #define CONFIG_SPL_LDSCRIPT		"$(CPUDIR)/am33xx/u-boot-spl.lds"
 
 #define CONFIG_SPL_BOARD_INIT
+
+#ifdef CONFIG_NAND
 #define CONFIG_SPL_NAND_AM33XX_BCH
 #define CONFIG_SPL_NAND_SUPPORT
 #define CONFIG_SPL_NAND_BASE
@@ -395,6 +408,7 @@
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
 
 #define CONFIG_SYS_NAND_U_BOOT_OFFS	0x80000
+#endif
 
 /*
  * 1MB into the SDRAM to allow for SPL's bss at the beginning of SDRAM
@@ -490,7 +504,6 @@
 #define CONFIG_PHY_ADDR			0
 #define CONFIG_PHY_SMSC
 
-#define CONFIG_NAND
 /* NAND support */
 #ifdef CONFIG_NAND
 #define CONFIG_CMD_NAND