了解U-Boot进程的Linux加载地址

Question

了解U-Boot进程的Linux加载地址

Ivo*_*ina 12 linux boot arm embedded-linux u-boot

我试图了解嵌入式Linux原理,无法在u-boot输出中找出地址.

例如,我有基于i.MX6四核处理器的UDOO板,我得到了U-Boot的以下输出:

U-Boot 2013.10-rc3 (Jan 20 2014 - 13:33:34)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
Reset cause: POR
Board: UDOO
DRAM:  1 GiB
MMC:   FSL_SDHC: 0
No panel detected: default to LDB-WVGA
Display: LDB-WVGA (800x480)
In:    serial
Out:   serial
Err:   serial
Net:   using phy at 6
FEC [PRIME]
Warning: FEC MAC addresses don't match:
Address in SROM is         00:c0:08:88:a5:e6
Address in environment is  00:c0:08:88:9c:ce

Hit any key to stop autoboot:  0 
Booting from mmc ...
4788388 bytes read in 303 ms (15.1 MiB/s)
## Booting kernel from Legacy Image at 12000000 ...
   Image Name:   Linux-3.0.35
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4788324 Bytes = 4.6 MiB
   Load Address: 10008000
   Entry Point:  10008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK

Starting kernel ...

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我不明白加载地址0x10008000的值.根据此特定处理器的文档,在地址区0x10000000处 - 0xffffffff映射主存储器.但什么是0x8000偏移量？我无法弄清楚这个价值的原因.

我也不了解地址0x12000000,其中加载了内核映像.是否有SD卡的映射内存区域？

请你能给我一些这些地址的解释,甚至更好,一些关于这个主题的资源的参考.我的目标是学习如何将u-boot和Linux内核移植到另一个板上.

谢谢!