K2E_EVM 启动过程疑问

gin:U-Boot SPL 2013.01 (Mar 27 2015 – 01:35:48)
SF: Detected N25Q128A with page size 64 KiB, total 16 MiB

U-Boot 2013.01 (Mar 27 2015 – 01:35:48)

I2C: ready
SPD csum OK; in SPD: 33 CC; computed 00000033 CC
DDR3A Speed will be configured for 1600 Operation.
Detected SO-DIMM [18KSF51272HZ-1G6K2]
DDR3 speed 1600
DRAM: 4 GiB

Reseting entire DDR3 memory to 0 …
DRAM: 2 GiB
NAND: 512 MiB
Net: K2E_EMAC0, K2E_EMAC1, K2E_EMAC2, K2E_EMAC3, K2E_EMAC4, K2E_EMAC5, K2E_EMAC6, K2E_EMAC7
Hit any key to stop autoboot: 3 2 1 0Creating 1 MTD partitions on "nand0":
0x000000180000-0x000020000000 : "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: attached mtd1 to ubi0
UBI: MTD device name: "mtd=2"
UBI: MTD device size: 510 MiB
UBI: number of good PEBs: 4080
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: 5
UBI: available PEBs: 0
UBI: total number of reserved PEBs: 4080
UBI: number of PEBs reserved for bad PEB handling: 40
UBI: max/mean erase counter: 5/1
UBIFS: mounted UBI device 0, volume 0, name "boot"
UBIFS: mounted read-only
UBIFS: file system size: 5079040 bytes (4960 KiB, 4 MiB, 40 LEBs)
UBIFS: journal size: 1142785 bytes (1116 KiB, 1 MiB, 9 LEBs)
UBIFS: media format: w4/r0 (latest is w4/r0)
UBIFS: default compressor: LZO
UBIFS: reserved for root: 0 bytes (0 KiB)
Loading file 'securedb.key.bin' to addr 0x0c000000 with size 28 (0x0000001c)…
Done
Loading file 'uImage-k2e-evm.dtb' to addr 0x87000000 with size 42478 (0x0000a5ee)…
Done
Loading file 'skern-k2e-evm.bin' to addr 0x0c140000 with size 45056 (0x0000b000)…
Done
Loading file 'uImage-keystone-evm.bin' to addr 0x88000000 with size 4042944 (0x003db0c0)…
Done
## installed monitor, freq [208333333], status 0
## Booting kernel from Legacy Image at 88000000 …
Image Name: Linux-3.10.61
Created: 2015-03-27 3:46:58 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4042880 Bytes = 3.9 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum … OK
## Flattened Device Tree blob at 87000000
Booting using the fdt blob at 0x87000000
Loading Kernel Image … OK
OK
Using Device Tree in place at 87000000, end 8700d5ed

Starting kernel …

下面是启动过程中的部分信息

Loading file 'securedb.key.bin' to addr 0x0c000000 with size 28 (0x0000001c)…
Done
Loading file 'uImage-k2e-evm.dtb' to addr 0x87000000 with size 42478 (0x0000a5ee)…
Done
Loading file 'skern-k2e-evm.bin' to addr 0x0c140000 with size 45056 (0x0000b000)…
Done

请问这3个文件的作用

谢谢!

Andy Yin1：

securedb.key.bin: 二进制秘钥文件，在安全加密模式下需要

uImage-k2e-evm.dtb: linux kernel image

skern-k2e-evm.bin: boot monitor image

具体参考：

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Developing_Security?keyMatch=securedb.key.bin&tisearch=Search-EN-Everything

http://processors.wiki.ti.com/index.php/MCSDK_UG_Chapter_Exploring

user4757990：

回复 Andy Yin1:

Loading file 'uImage-keystone-evm.bin' to addr 0x88000000 with size 4042944 (0x003db0c0)…这个才是内核啊

uImage-k2e-evm.dtb 只有41KB怎么可能是内核

麻烦解答,谢谢