您好，
我司自行开发的AM3352核心板碰上一个问题，如果设置成 MMC 开机模式，则系统显示找不到 NAND Device；如果设置成 NAND 开机模式，上电后都没有动作，连打印 CCCC.... 的动作都没有。SYSBOOT 的設置是：
MMC boot = 0x42D6
NAND boot = 0x42D4
以下是设置成 MMC 开机模式的串口信息，请问有何建议吗?
**************************** Log Start ****************************
U-Boot SPL 2011.09 (May 30 2016 - 14:22:58)
Texas Instruments Revision detection unimplemented
EFUSE_SMA: 0x00011E2F, max freq reg: 0X1E2F
Set MPU freq to 800 MHz
Booting from MMC...
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img
U-Boot 2011.09 (May 30 2016 - 14:22:58)
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
Did not find a recognized configuration, assuming General purpose EVM in Profile 0 with Daughter board
NAND: HW ECC Hamming Code selected
==dev_id:0x0 type->id :0x33
No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment
Not found the LCD header IC
Net: cpsw
Hit any key to stop autoboot: 0
sysboot[4-0]: 0x16 ... sdboot.
SD/MMC found on device 0
reading uEnv.txt
** Unable to read "uEnv.txt" from mmc 0:1 **
reading uImage
3177816 bytes read
reading ramdisk.gz
** Unable to read "ramdisk.gz" from mmc 0:1 **
Booting from nand ...
HW ECC BCH8 Selected
no devices available
## Booting kernel from Legacy Image at 80007fc0 ...
Image Name: Linux-3.2.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3177752 Bytes = 3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ...
Texas Instruments Revision detection unimplemented
EFUSE_SMA: 0x00011E2F, max freq reg: 0X1E2F
Set MPU freq to 800 MHz
Booting from MMC...
OMAP SD/MMC: 0
reading u-boot.img
reading u-boot.img
U-Boot 2011.09 (May 30 2016 - 14:22:58)
I2C: ready
DRAM: 512 MiB
WARNING: Caches not enabled
Did not find a recognized configuration, assuming General purpose EVM in Profile 0 with Daughter board
NAND: HW ECC Hamming Code selected
==dev_id:0x0 type->id :0x33
No NAND device found!!!
0 MiB
MMC: OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment
Not found the LCD header IC
Net: cpsw
Hit any key to stop autoboot: 0
sysboot[4-0]: 0x16 ... sdboot.
SD/MMC found on device 0
reading uEnv.txt
** Unable to read "uEnv.txt" from mmc 0:1 **
reading uImage
3177816 bytes read
reading ramdisk.gz
** Unable to read "ramdisk.gz" from mmc 0:1 **
Booting from nand ...
HW ECC BCH8 Selected
no devices available
## Booting kernel from Legacy Image at 80007fc0 ...
Image Name: Linux-3.2.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3177752 Bytes = 3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ...
**************************** Log End ****************************
