* [U-Boot-Users] resume from sleeping for au1x00
@ 2005-10-14 15:38 Rodolfo Giometti
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From: Rodolfo Giometti @ 2005-10-14 15:38 UTC (permalink / raw)
To: u-boot
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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Linux Device Driver giometti at enneenne.com
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2005-10-14 15:38 [U-Boot-Users] resume from sleeping for au1x00 Rodolfo Giometti
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