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powerpc/rcpm: add RCPM driver

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There is a RCPM (Run Control/Power Management) in Freescale QorIQ
series processors. The device performs tasks associated with device
run control and power management.

The driver implements some features: mask/unmask irq, enter/exit low
power states, freeze time base, etc.

Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
[scottwood: remove __KERNEL__ ifdef]
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
chenhui zhao
2015-11-20 17:13:59 +08:00
committed by Scott Wood
parent e7affb1dba
commit d17799f9c1
9 changed files with 571 additions and 0 deletions
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19
arch/powerpc/kernel/head_64.S
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@@ -181,6 +181,25 @@ exception_marker:
#endif
#ifdef CONFIG_PPC_BOOK3E
/*
* stop a thread in the same core
* input parameter:
* r3 = the thread physical id
*/
_GLOBAL(book3e_stop_thread)
cmpi 0, r3, 0
beq 10f
cmpi 0, r3, 1
beq 10f
/* If the thread id is invalid, just exit. */
b 13f
10:
li r4, 1
sld r4, r4, r3
mtspr SPRN_TENC, r4
13:
blr
_GLOBAL(fsl_secondary_thread_init)
mfspr r4,SPRN_BUCSR