[En-Nut-Discussion] re location truncated to fit: R_ARM_PC24 against symbol solved - so far

[Alain M.]

Hi Martin,

what modification did you make to the program and linker script? That 
can be usefull to many others, specially if one day it makes a way into 
the distribution version

Alain

ml escreveu:
> Hi Alain,
> 
> it´s not a big deal. I want to run my program in flash and use the flash
> even for data-storage.
> So i place all functions for writing the flash in RAM. That´s the part who
> works now. I can
> link the code and it is copied to ram. Due to the lack of debuging
> possibilty i write a little
> dump which shows me that the routine is really placed in RAM and called from
> the other
> parts in Flash.  (Modern debugging via UART)
> 
> Unfortunately the call to _FlashEraseComplete doesn´t come back. I can´t see
> the reason why this
> happens.  If i remove the flashcode from the function so that only
> NutEnterCritical and NutExitCritical
> is there than it comes back. :( ??
> 
> It would be very nice to have a debugger for that, but all i tried doesn´t
> work. Wether in insight or Eclipse.
> Debugging in RAM works well.
> 
> Martin 
> 
> 
> 
> RAMFUNC int _FlashWaitReady(flashptr_t addr, flashdat_t data, u_long tmo) {
>     while(*addr != data) {    	
>         if (--tmo <= 0) {        	
>             return 1;
>         } else {
>           asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");
> asm volatile ("nop");
>           asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");
> asm volatile ("nop");
>         }
>          //NutSleep(1); not possible here, because we must stay in ram !!
>     }
>     return 0;	
> }
> 
> 
> RAMFUNC unsigned long _FlashIdentifier(void) {
> unsigned long id;
>     NutEnterCritical();   
>     id = 0;
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55;
>     FLASHBASE[0x555] = 0x90; 
>     id = FLASHBASE[0]; 
>     id <<= 16;
>     id |= FLASHBASE[1];
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55;
>     FLASHBASE[0x555] = 0xF0; 
>     NutExitCritical();            
>     return(id);
> }
> 
> 
> RAMFUNC int _FlashEraseComplete(void) 
> {
> 	int r;
>     NutEnterCritical();
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55;
>     FLASHBASE[0x555] = 0x80;
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55;
>     FLASHBASE[0x555] = 0x10; 
>     r = _FlashWaitReady(FLASHBASE, (flashdat_t)-1,5000000);   
>     NutExitCritical();            
>     return(r);
> }
> 
> RAMFUNC int _FlashEraseSector(flashptr_t addr)
> {
>     int r;
>     NutEnterCritical();      
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55;
>     FLASHBASE[0x555] = 0x80;
>     FLASHBASE[0x555] = 0xAA;
>     FLASHBASE[0xAAA] = 0x55; 
>     *addr = 0x30;
>     r = _FlashWaitReady(addr,(flashdat_t)-1,300000);   
>     NutExitCritical();            
>     return(r);
> }
>