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SPARC/LEON: power down instruction different of different LEONs

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The way a LEON is powered down is implemented differently depending
on CHIP type. The AMBA Plug&Play system ID tells revision of GRLIB
and CHIP.

This is for example needed by the GR-LEON4-ITX board and the UT699.

Previously the power down support for LEON was limited to SMP, now
both SMP and UP systems use the instruction.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom 2011-01-27 01:26:58 +00:00 • committed by David S. Miller
parent 684151a75b
commit 7279b82cb1
5 changed files with 97 additions and 17 deletions
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16
arch/sparc/kernel/leon_smp.c
View file

@ -437,15 +437,6 @@ void __init leon_blackbox_current(unsigned *addr)
}
/*
* CPU idle callback function
* See .../arch/sparc/kernel/process.c
*/
void pmc_leon_idle(void)
{
__asm__ volatile ("mov %g0, %asr19");
}
void __init leon_init_smp(void)
{
/* Patch ipi15 trap table */
@ -456,13 +447,6 @@ void __init leon_init_smp(void)
BTFIXUPSET_CALL(smp_cross_call, leon_cross_call, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(__hard_smp_processor_id, __leon_processor_id,
BTFIXUPCALL_NORM);
#ifndef PMC_NO_IDLE
/* Assign power management IDLE handler */
pm_idle = pmc_leon_idle;
printk(KERN_INFO "leon: power management initialized\n");
#endif
}
#endif /* CONFIG_SPARC_LEON */