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Only disable the MPC83xx watchdog if its enabled out of reset.

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If its disabled out of reset SW can later enable it if so desired
Patch by Kumar Gala, 11 Jan 2006
This commit is contained in:
Kumar Gala
2006-01-11 11:23:01 -06:00
parent a15b44dbfa
commit ec00c33578
2 changed files with 10 additions and 0 deletions
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6
cpu/mpc83xx/start.S
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@@ -426,8 +426,14 @@ init_e300_core: /* time t 10 */
#else
/* Disable Wathcdog */
/*-------------------*/
lwz r4, SWCRR(r3)
/* Check to see if its enabled for disabling
once disabled by SW you can't re-enable */
andi. r4, r4, 0x4
beq 1f
xor r4, r4, r4
stw r4, SWCRR(r3)
1:
#endif /* CONFIG_WATCHDOG */
/* Initialize the Hardware Implementation-dependent Registers */