Hi Mike 2011/11/19 Mike Frysinger <vap...@gentoo.org>
Thanks for your review. [snip] > > > +.globl turnoff_watchdog > > +turnoff_watchdog: > > + > > +#define WD_CR 0xC > > +#define WD_ENABLE 0x1 > > + > > + ! Turn off the watchdog, according to Faraday FTWDT010 spec > > + li $p0, (CONFIG_FTWDT010_BASE+WD_CR) ! Get the addr of > WD CR > > + lwi $p1, [$p0] ! Get the config > of WD > > + andi $p1, $p1, 0x1f ! Wipe out useless > bits > > + li $r0, ~WD_ENABLE > > + and $p1, $p1, $r0 ! Set WD disable > > + sw $p1, [$p0] ! Write back to WD > CR > > + > > + ! Disable Interrupts by clear GIE in $PSW reg > > + setgie.d > > can't this be C code ? > -mike > This is because after reset, the watchdog might be enabled if there is another boot loader has ran before u-boot. If the other boot loader enabled watchdog but didn't stop it, it might cause u-boot to be reset during assembly initialization phase. So we need to disable watchdog here. Other suggestions will be adapted. Thanks! -- Best regards, Macpaul Lin
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