About the uclinux starter and memory allocation

[Altera_Forum]

dear all, 

  when i do uclinux according to hippo, now i can run uclinux in my target board(nios2,FLASH8MB(0X000000-0X7FFFFF),SDRAM(8MB)0X800000-0XFFFFFF),but i still don&#39;t understand where the zImage file download to,and how does the uclinux work and how does the memory space use?   in my target board: 0x000000|------------------| ------------| ----------------- | ------------|8MB FLASH ---- |  0x7FFFFF |-------------------| 0x800000|-------------------| -----------|8MB SDRAM ----| 0xd00000|-------------------| <-----kernal config 0x500000+0x800000,why ?? ------------|--------------------| 0x0FFFFFF|-------------------| 0x1000000|-- NIOS II ------|  0x10007FF |------------------|   ----  IN THE SYSTEM THE RESET ADDRESS 0X000000,EXECPTION ADDRESS 0X800020   COULD YOU TELL ME HOW DOES THE UCLINUX WORK WHEN THE SYSTEM POWER ON?

[Altera_Forum]

You didn&#39;t program the flash at 0x000000 yet. You can program the flash, so that will start after power-on without data blaster download/cable.  

http://nioswiki.jot.com/wikihome/operating...flashprogrammer (http://nioswiki.jot.com/wikihome/operatingsystems/%c2%b5clinux/flashprogrammer) NOTE, you should not use jtag uart in this case, or it will hang until you run nios2-terminal. you should use serial uart instead.  The nios2-download will load the zImage to (0x800000 + 0x500000), and start exec at this address, ie 0xd00000. The zImage will uncompress the linux kernel (gziped in zImage) to 0x800000. And start exec at 0x800000.