请问为什么TCI6614开发板无法启动Linux内核？

本帖最后由 一只耳朵怪 于 2018-6-25 11:24 编辑

开发板的型号是 TDMXEVM6614LXE.
1 按照DVD光盘 SC_MCSDK_User_Guide.pdf 的步骤将根文件系统写入nand flash。下面的 g> 是我加的，手册没有。不明白手册那样做什么时候加载文件系统映像到内存
a> setenv mtdparts mtdparts=davinci_nand.0:1024k(bootloader),512k(params)ro,129536k(ubifs)
b> setenv bootfile tci6614-evm-ubifs.ubi
c> setenv bootargs 'console=ttyS0,115200n8 ip=dhcp mem=512M rootwait=1 rootfstype=ubifs root=ubi0:rootfs rootflags=sync rw ubi.mtd=2,2048'
d> setenv bootcmd 'ubi part ubifs; ubifsmount boot; ubifsload 0x88000000 uImage; ubifsload 0x80000200 tci6614-evm.dtb; bootm 0x88000000 - 0x80000200'
e> saveenv
f> nand erase.part ubifs
g> tftp 0x88000000 tci6614-evm-ubifs.ubi
h> nand write 0x88000000 ubifs 0x2600000

2. 重启后的log如下：到最后一行 打印了 booting the kernel 之后就再也没有任何信息了

U-Boot 2011.06-00002-gc4611c1-dirty (May 30 2012 - 15:38:01)
I2C:   ready
DRAM:  512 MiB
NAND:  128 MiB
Bad block table found at page 65472, version 0x01
Bad block table found at page 65408, version 0x01
Net:   Ethernet PHY: 88E1111 @ 0x01
TCI6614-EMAC
Hit any key to stop autoboot:  0
Creating 1 MTD partitions on "nand0":
0x000000180000-0x000008000000 : "mtd=2"
UBI: attaching mtd1 to ubi0
UBI: physical eraseblock size:   131072 bytes (128 KiB)
UBI: logical eraseblock size:    126976 bytes
UBI: smallest flash I/O unit:    2048
UBI: VID header offset:          2048 (aligned 2048)
UBI: data offset:                4096
UBI: volume 2 ("rootfs") re-sized from 214 to 811 LEBs
UBI: attached mtd1 to ubi0
UBI: MTD device name:            "mtd=2"
UBI: MTD device size:            126 MiB
UBI: number of good PEBs:        1008
UBI: number of bad PEBs:         4
UBI: max. allowed volumes:       128
UBI: wear-leveling threshold:    4096
UBI: number of internal volumes: 1
UBI: number of user volumes:     3
UBI: available PEBs:             0
UBI: total number of reserved PEBs: 1008
UBI: number of PEBs reserved for bad PEB handling: 10
UBI: max/mean erase counter: 1/0
UBIFS: mounted UBI device 0, volume 0, name "boot"
UBIFS: mounted read-only
UBIFS: file system size:   3936256 bytes (3844 KiB, 3 MiB, 31 LEBs)
UBIFS: journal size:       1142785 bytes (1116 KiB, 1 MiB, 8 LEBs)
UBIFS: media format:       w4/r0 (latest is w4/r0)
UBIFS: default compressor: LZO
UBIFS: reserved for root:  0 bytes (0 KiB)
Loading file 'uImage' to addr 0x88000000 with size 2268104 (0x00229bc8)...
Done
Loading file 'tci6614-evm.dtb' to addr 0x80000200 with size 5733 (0x00001665)...
Done
## Booting kernel from Legacy Image at 88000000 ...
   Image Name:   Arago/3.3/tci6614-evm
   Created:      2012-05-05  18:48:53 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    2268040 Bytes = 2.2 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 80000200
   Booting using the fdt blob at 0x80000200
   Loading Kernel Image ... OK
OK
   Loading Device Tree to 9fec1000, end 9fec5664 ... OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.

3. 对比内核分区和uboot nand的分区，也没能发现什么问题
setenv mtdparts mtdparts=davinci_nand.0:1024k(bootloader),512k(params)ro,129536k(ubifs)

  static struct mtd_partition nand_partitions[] = [
/* U-Boot in first 1M */
[
  .name  = "u-boot",
  .offset  = 0,
  .size  = (8 * SZ_128K),
  .mask_flags = MTD_WRITEABLE, /* force read-only */
],
/* bootloader params in the next 512K */
[
  .name  = "params",
  .offset  = MTDPART_OFS_NXTBLK,
  .size  = (4 * SZ_128K),
  .mask_flags = MTD_WRITEABLE, /* force read-only */
],
/* partition for UBIFS filesystem */
[
  .name  = "ubifs",
  .offset  = MTDPART_OFS_NXTBLK,
  .size  = MTDPART_SIZ_FULL,
  .mask_flags = 0,
]
];