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AVR: Explicitly disable interrupts as the first step of system init

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Disabling interrupts at the very beginning of system init does not
make sense after reset since interrupts are disabled anyway. But
it is very convenient for debugging purposes, in situations when the
system misbehaves and ocassionally jumps to zero.
This commit is contained in:
Dimitry Kloper 2015-12-29 18:35:36 +02:00
parent ff5e589f76
commit 9a4a06bf47
1 changed files with 3 additions and 0 deletions
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3
arch/avr/src/atmega/atmega_head.S
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@ -368,6 +368,9 @@ vectortab:
.func __start
__start:
/* no interrupts! Useful for software reset by jumping to address 0 */
cli
/* Clear the zero register, clear the status register and initialize the
* IDLE thread stack
*/