On 10/02/2009 01:06 PM, Stefan Roese wrote:
The CFI driver does not reset the device's watchdog, so long-running flash operations will cause the watchdog timer to expire. A comment in flash_status_check() suggests that udelay() is expected to reset the watchdog, but I can't find any architecture where it does.
PPC does it this way. udelay() in lib_ppc/time.c calls wait_ticks(). And here you will find WATCHDOG_RESET.
You're right. Seems to be an exception, though: According to ctags there are 40 separate implementations of udelay(), and the ones in lib_ppc and lib_nios seem to be the only ones that actually do call WATCHDOG_RESET.
Which platform are you using? I support this needs to be fixed in your platform.
I'm using an Atmel AT91-based custom board, and the udelay() function can be found in cpu/arm926ejs/at91/timer.c. Unfortunately there's no central udelay() implementation in lib_arm.
Regards, Ingo