Hardware: AM3352+NAND Flash(MT29F16G08ABACA)
Software:ti-sdk-am335x-evm-08.00.00.00
sysboot pins[0:15] = 0010 0000 0000 0000 0010, 设置启动顺序:uart,mmc,nand
1. 编译后使用/bin/create-sdcard.sh制作SD卡，可以正常启动.
2. reset后进入u-boot模式，使用以下命令烧写MLO和u-boot.img到nand flash.
U-boot#mmc rescan
U-boot#nand erase 0x0 0x80000
U-boot#fatload mmc 0 0x82000000 mlo
U-boot#nand write 0x82000000 0x0 0x80000
U-boot#nand erase 0x80000 0x100000
U-boot#fatload mmc 0 0x82000000 u-boot.img
U-boot#nand write 0x82000000 0x8000 0x100000
断电,拔出SD卡重新上电，串口一直输出CCCC,nand启动失败。
请问1：可以从SD卡启动的MLO，是否可以直接烧录到nand？
根据手册，从SD卡启动的MLO可以是raw模式，也可以fat模式，查看MLO内容，发现其头部有TOC结构体，应该是raw模式。
请问2：如果要烧录到nand，MLO必须去掉头部的TOC结构体吗？如果是这样的，编译u-boot的时候如何设置呢？
U-boot#fatload mmc 0 0x82000000 u-boot.img
U-boot#md 0x82000000 600
U-Boot# md 0x82000000 600
82000000: 00000040 0000000c 00000000 00000000 @...............
82000010: 00000000 45534843 4e495454 00005347 ....CHSETTINGS..
82000020: ffffffff ffffffff ffffffff ffffffff ................
82000030: ffffffff ffffffff ffffffff ffffffff ................
82000040: c0c0c0c1 00000100 00000000 00000000 ................
82000050: 00000000 00000000 00000000 00000000 ................
82000060: 00000000 00000000 00000000 00000000 ................
82000070: 00000000 00000000 00000000 00000000 ................
82000080: 00000000 00000000 00000000 00000000 ................
82000090: 00000000 00000000 00000000 00000000 ................
820000a0: 00000000 00000000 00000000 00000000 ................
820000b0: 00000000 00000000 00000000 00000000 ................
820000c0: 00000000 00000000 00000000 00000000 ................
820000d0: 00000000 00000000 00000000 00000000 ................
820000e0: 00000000 00000000 00000000 00000000 ................
820000f0: 00000000 00000000 00000000 00000000 ................
82000100: 00000000 00000000 00000000 00000000 ................
82000110: 00000000 00000000 00000000 00000000 ................
82000120: 00000000 00000000 00000000 00000000 ................
82000130: 00000000 00000000 00000000 00000000 ................
82000140: 00000000 00000000 00000000 00000000 ................
82000150: 00000000 00000000 00000000 00000000 ................
82000160: 00000000 00000000 00000000 00000000 ................
82000170: 00000000 00000000 00000000 00000000 ................
82000180: 00000000 00000000 00000000 00000000 ................
82000190: 00000000 00000000 00000000 00000000 ................
820001a0: 00000000 00000000 00000000 00000000 ................
820001b0: 00000000 00000000 00000000 00000000 ................
820001c0: 00000000 00000000 00000000 00000000 ................
820001d0: 00000000 00000000 00000000 00000000 ................
820001e0: 00000000 00000000 00000000 00000000 ................
820001f0: 00000000 00000000 00000000 00000000 ................
82000200: 00011b9c 402f0400 eb000075 e10f0000 ....../@u.......
82000210: e200101f e331001a 13c0001f 13800013 ......1.........
82000220: e38000c0 e129f000 ee110f10 e3c00a02 ......).........
82000230: ee010f10 e59f0064 ee0c0f10 eb000008 ....d.........
U-Boot# mtdparts
device nand0 <nand.0>, # parts = 8
#: name size offset mask_flags
0: SPL 0x00080000 0x00000000 0
1: u-boot 0x00100000 0x00080000 0
2: u-boot-env 0x00080000 0x00180000 0
3: dtb 0x00080000 0x00200000 0
4: kernel 0x00a00000 0x00280000 0
5: rootfs 0x04000000 0x00c80000 0
6: rootfs.backup 0x04000000 0x04c80000 0
7: NAND.file-system 0x77380000 0x08c80000 0
active partition: nand0,0 - (SPL) 0x00080000 @ 0x00000000
defaults:
mtdids : nand0=nand.0
mtdparts: mtdparts=nand.0:512k(SPL),1m(u-boot),512k(u-boot-env),512k(dtb),10m(ke
rnel),64m(rootfs),64m(rootfs.backup),-(NAND.file-system)
另外：根据下面这个帖子，我用的nand flash 的device ID不在支持的列表里，
https://e2echina.ti.com/question_answer/dsp_arm/sitara_arm/f/25/t/80766
但我查了nand flash的手册，其支持ONFI接口，根据335x技术手册，ROM CODE首先使用ONFI接口读取nand 信息，如果失败才会通过device ID匹配。
所以可以排除nand flash兼容性的问题。
谢谢
