帖子: 8148 NAND uboot 烧写完成1st uboot但没运行起来

板子bootmode[0:4]设置为11001,16bit_nand,所以bootmode[12]设置为1，在CCS下运行nand-flash-writer.out，擦除之后写入u-boot.min.nand，编译之前ddr寄存器都已经修改好了。烧写过程也没有错误，但是重启上电uart0并没有打印。后来在http://processors.wiki.ti.com/index.php/TI81XX_PSP_UBOOT_User_Guide#Flashing_U-Boot_using_CCS看到

• When using memory boot (NAND/SPI) a header needs to be attached to the U-Boot binary indicating the the load address and the size of the image. SPI boot also requires endian conversion before flashing the image.

似乎往nand烧写要加偏移吗？但是偏移要加多大呢？

下面是CCS运行nand烧写信息

[CortexA8] Welcome to CCS Nand Flash Utility

Choose your operation

Enter 1 ---> To Flash an Image

Enter 2 ---> To ERASE the whole NAND

Enter 3 ---> To EXIT

1

Enter image file path

D:\work\u-boot.min.nand

Enter offset (in hex):

0

Choose the ECC scheme from given options :

Enter 1 ---> BCH 8 bit

Enter 2 ---> HAM  

Enter 3 ---> T0 EXIT

Please enter ECC scheme type :

1

Starting NETRA NAND writer

The NAND Flash is ONFI compatible

----------------------

  NAND FLASH DETAILS

----------------------

 Device ID : 0xca

 Manufacture ID : 0x2c

 Page Size : 2048 Bytes

 Spare Size : 64 Bytes

 Pages_Per_Block : 64

 Number_of_Blocks : 2048

 Device_width : 2 Byte

 DeviceSize : 256 MB

 Setting the ECC scheme

  Set the BCH 8 bit ECC scheme  .... done

Preparing to Flash image ....

Opening image ... done.

Erasing Required Blocks [start = 0, count = 1]...Done

Flashing image ...

Number of blocks needed for header and data: 0x1

Attempting to start write in block number 0x0.

Writing image data to Block 0 Page0x0

Writing image data to Block 0 Page0x1

Writing image data to Block 0 Page0x2

Writing image data to Block 0 Page0x3

Writing image data to Block 0 Page0x4

Writing image data to Block 0 Page0x5

Writing image data to Block 0 Page0x6

Writing image data to Block 0 Page0x7

Writing image data to Block 0 Page0x8

Writing image data to Block 0 Page0x9

Writing image data to Block 0 Page0xa

Writing image data to Block 0 Page0xb

Writing image data to Block 0 Page0xc

Writing image data to Block 0 Page0xd

Writing image data to Block 0 Page0xe

Writing image data to Block 0 Page0xf

Writing image data to Block 0 Page0x10

Writing image data to Block 0 Page0x11

Writing image data to Block 0 Page0x12

Writing image data to Block 0 Page0x13

Writing image data to Block 0 Page0x14

Writing image data to Block 0 Page0x15

Writing image data to Block 0 Page0x16

Writing image data to Block 0 Page0x17

Writing image data to Block 0 Page0x18

Writing image data to Block 0 Page0x19

Writing image data to Block 0 Page0x1a

Writing image data to Block 0 Page0x1b

Writing image data to Block 0 Page0x1c

Writing image data to Block 0 Page0x1d

Writing image data to Block 0 Page0x1e

Writing image data to Block 0 Page0x1f

Writing image data to Block 0 Page0x20

Writing image data to Block 0 Page0x21

Writing image data to Block 0 Page0x22

Writing image data to Block 0 Page0x23

Writing image data to Block 0 Page0x24

Writing image data to Block 0 Page0x25

Writing image data to Block 0 Page0x26

Writing image data to Block 0 Page0x27

Writing image data to Block 0 Page0x28

Writing image data to Block 0 Page0x29

Writing image data to Block 0 Page0x2a

Writing image data to Block 0 Page0x2b

Writing image data to Block 0 Page0x2c

Writing image data to Block 0 Page0x2d

Application is successfully flashed

NAND flashing successful!