[ECOS] powerpc8270 exception management and redboot and ecos interaction

[Nelly PISON <npison at elios dot gfi dot fr>]

Hello,

I use redboot and an ecos application on a powerpc 8270 board.

1 - powerpc exception management 
I use a function _reset developped on our hardware platform that made 
an exception (parity error) : this exception provoque the hard reset of 
the 8270:can you tell me where is  the source that treat  this exception.

the code that made this exception is:

{
   unsigned long hid0, int_state;

   // Need interrupts off to force checkstop
   HAL_DISABLE_INTERRUPTS(int_state);
   IMM->clocks_rmr |= 0x01;  // Checkstop Reset Enable
   // Force a checkstop by turning on parity which is not implemented
   CYGARC_MFSPR(CYGARC_REG_HID0, hid0);
   hid0 |= 0x30000000;
   CYGARC_MTSPR(CYGARC_REG_HID0, hid0);
   while (1) ;
}

2 - reboot and ecos interaction

- Where is the Dynamic memory allocation zone for redboot (if any) and 
the ecos application allocation : is that the same? ,
if yes how can this work ?
if not where can we see where is mapped the zone for each?


- Does the ecos application  call redboot after the appication is started?

If yes , What part of the ecos application can call the flash_get_config 
function with type  CONFIG_BOOL and key "info_console_force"?


Thanks for your help
Nelly




--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss