[U-Boot-Users] resume from sleeping for au1x00
Rodolfo Giometti
giometti at linux.it
Fri Oct 14 17:38:50 CEST 2005
Hello,
someone are using u-boot to resume from sleeping with au1x00 MIPS
processor?
I'm just looking at linux code into file
arch/mips/au1000/common/sleeper.S. The function save_and_sleep() does:
/* Now set up the scratch registers so the boot rom will
* return to this point upon wakeup.
*/
la k0, 1f
lui k1, 0xb190
ori k1, 0x18
sw sp, 0(k1)
ori k1, 0x1c
sw k0, 0(k1)
so I suppose that, at wake up, these «scratch registers» can be used
by u-boot to restart at correct location... is that right? :-o
Thanks in advance,
Rodolfo
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