Hi, all

I have some questions in porting the ARMBOOT to the CX821xx(ARM940T).

in the "start_armboot(void)":

1. when I skip two instructions and stop in one point, i.e. void start_armboot(void) { ...

/* initialize environment */ //env_init(&bd); //skip it!!!!

...

/* initialize environment */ //env_relocate(&bd); //skip it!!!!

#if 1 //my code, stop here to get some debug information printf("I am here\n"); for(;;); #endif

... } My final BIN file is about 13kbytes, and the code works well (can printf all information).

But, 2. when I open the two instructions, i.e. void start_armboot(void) { ...

/* initialize environment */ env_init(&bd); //open it!!!!

...

/* initialize environment */ env_relocate(&bd); //open it!!!!

#if 1 //my code, stop here to get some debug information printf("I am here\n"); for(;;); #endif

... } My final BIN file is about 74kbytes, and the code is broken (no information output).

I compare the relevant "armboot.map" files of these two case. The case 2 includes more functions than case 1.

My question is: (1) why these two instructions affect in linking more functions? (2) I do believe I copy all code from the FLASH into the SDRAM before jumping the "start_armboot". Why I can run in the low part of code in the SDRAM, but when I call a function is far from the _START, my code is broken?

The attackments are my two "armboot.map". Could somebody tell me something about my question? Because I new man in porting ARMBOOT, I really appreciate your help!

Dennis

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