Hello.
Nico Coesel wrote:
Ralf,
Funny you ask because I tried this yesterday on a AU1100 system with the
2.6.24 kernel (from kernel.org). I'm afraid I must say the kernel
crashes when I enable power management. The reason I want to use power
management is because I need to send the CPU to sleep when the system
shuts down. I hacked power.c and reset.c a bit so au_sleep() is called
when the system is shut down. Perhaps someone can confirm the
powermanagement can be made to work with some fixes (it didn't work with
2.6.21-rc4 either).
BTW, if you look at sleeper.S you'll find that save_and_sleep() trashes
registers $1 and $2 because of reusing their stackframe slots to save Status
and Context CP0 registers:
sw $1, PT_R1(sp)
sw $2, PT_R2(sp)
mfc0 k0, CP0_STATUS
sw k0, 0x20(sp) # equals PT_R2
mfc0 k0, CP0_CONTEXT
sw k0, 0x1c(sp) # equals PT_R1
Nico Coesel
WBR, Sergei
