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| author |   chenhui zhao <chenhui.zhao@freescale.com> | 2015-11-20 17:13:59 +0800 |
|---|---|---|
| committer |   Scott Wood <oss@buserror.net> | 2016-03-04 23:50:27 -0600 |
| commit | d17799f9c10e283cccd4d598d3416e6fac336ab9 (patch) | |
| tree | a1af0cb18e1821922d66a198d25aed9cdb18806f /arch/powerpc/kernel/head_64.S | |
| parent | powerpc/cache: add cache flush operation for various e500 (diff) | |
| download | linux-dev-d17799f9c10e283cccd4d598d3416e6fac336ab9.tar.xz linux-dev-d17799f9c10e283cccd4d598d3416e6fac336ab9.zip | |
powerpc/rcpm: add RCPM driver
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>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 1b779560728f..603625368ceb 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -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 |