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.wat...@timesys.com>
---
 boards.cfg                   |   16 +++++++-------
 include/configs/am335x_evm.h |   49 ++++++++++++++++++++++++++----------------
 2 files changed, 39 insertions(+), 26 deletions(-)

diff --git a/boards.cfg b/boards.cfg
index c0c4282..c0cf446 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 c5a6d4b..c53bc21 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
-- 
1.7.9.6

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