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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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4
CHANGELOG
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@ -2,6 +2,10 @@
Changes since U-Boot 1.1.4:
======================================================================
* Only disable the MPC83xx watchdog if its enabled out of reset.
If its disabled out of reset SW can later enable it if so desired
Patch by Kumar Gala, 11 Jan 2006
* Allow config of GPIO direction & data registers at boot on 83xx
Patch by Kumar Gala, 11 Jan 2006

6
cpu/mpc83xx/start.S
View File

@ -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 */