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| author | James Hogan | 2012-10-05 17:56:56 +0200 |
|---|---|---|
| committer | James Hogan | 2013-03-02 21:09:51 +0100 |
| commit | 42682c6c42a5765b2c7cccfca170368fef6191ef (patch) | |
| tree | adcfa5e96cd98527ee75fc541efc279357bbe6a2 /arch/metag/kernel/head.S | |
| parent | metag: Basic documentation (diff) | |
| download | kernel-qcow2-linux-42682c6c42a5765b2c7cccfca170368fef6191ef.tar.gz kernel-qcow2-linux-42682c6c42a5765b2c7cccfca170368fef6191ef.tar.xz kernel-qcow2-linux-42682c6c42a5765b2c7cccfca170368fef6191ef.zip | |
metag: SMP support
Add SMP support for metag. This allows Linux to take control of multiple
hardware threads on a single Meta core, treating them as separate Linux
CPUs.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/metag/kernel/head.S')
| -rw-r--r-- | arch/metag/kernel/head.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/metag/kernel/head.S b/arch/metag/kernel/head.S index 8b1388663892..969dffabc03a 100644 --- a/arch/metag/kernel/head.S +++ b/arch/metag/kernel/head.S @@ -43,3 +43,15 @@ __start: __exit: XOR TXENABLE,D0Re0,D0Re0 .size __exit,.-__exit + +#ifdef CONFIG_SMP + .global _secondary_startup + .type _secondary_startup,function +_secondary_startup: + MOVT A0StP,#HI(_secondary_data_stack) + ADD A0StP,A0StP,#LO(_secondary_data_stack) + GETD A0StP,[A0StP] + ADD A0StP,A0StP,#THREAD_INFO_SIZE + B _secondary_start_kernel + .size _secondary_startup,.-_secondary_startup +#endif |