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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2005-11-07 21:05:42 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-07 21:05:42 +0000 |
| commit | 862184fe013146a0d9654a5598c5a2691747541c (patch) | |
| tree | 0f3f0d46c79c7eae3d504c0e1be9ff923f1b2e36 /include/asm-arm/arch-realview/entry-macro.S | |
| parent | fea543f47733cc843cd74d95065ed1d4a04b38ed (diff) | |
| download | op-kernel-dev-862184fe013146a0d9654a5598c5a2691747541c.zip op-kernel-dev-862184fe013146a0d9654a5598c5a2691747541c.tar.gz | |
[ARM SMP] Add Realview MPcore SMP support
Add SMP support for the MPcore tile fitted to the Realview ARM
platform.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/arch-realview/entry-macro.S')
| -rw-r--r-- | include/asm-arm/arch-realview/entry-macro.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/asm-arm/arch-realview/entry-macro.S b/include/asm-arm/arch-realview/entry-macro.S index 2712ba7..4df469b 100644 --- a/include/asm-arm/arch-realview/entry-macro.S +++ b/include/asm-arm/arch-realview/entry-macro.S @@ -47,3 +47,17 @@ cmpcs \irqnr, \irqnr .endm + + /* We assume that irqstat (the raw value of the IRQ acknowledge + * register) is preserved from the macro above. + * If there is an IPI, we immediately signal end of interrupt on the + * controller, since this requires the original irqstat value which + * we won't easily be able to recreate later. + */ + + .macro test_for_ipi, irqnr, irqstat, base, tmp + bic \irqnr, \irqstat, #0x1c00 + cmp \irqnr, #16 + strcc \irqstat, [\base, #GIC_CPU_EOI] + cmpcs \irqnr, \irqnr + .endm |
