From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 15 Nov 2014 09:58:27 +0800 Subject: init android origin source code --- .../arm/mach-kirkwood/include/mach/entry-macro.S | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 ANDROID_3.4.5/arch/arm/mach-kirkwood/include/mach/entry-macro.S (limited to 'ANDROID_3.4.5/arch/arm/mach-kirkwood/include/mach/entry-macro.S') diff --git a/ANDROID_3.4.5/arch/arm/mach-kirkwood/include/mach/entry-macro.S b/ANDROID_3.4.5/arch/arm/mach-kirkwood/include/mach/entry-macro.S new file mode 100644 index 00000000..82db29f7 --- /dev/null +++ b/ANDROID_3.4.5/arch/arm/mach-kirkwood/include/mach/entry-macro.S @@ -0,0 +1,34 @@ +/* + * arch/arm/mach-kirkwood/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for Marvell Kirkwood platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include + + .macro get_irqnr_preamble, base, tmp + ldr \base, =IRQ_VIRT_BASE + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + @ check low interrupts + ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF] + ldr \tmp, [\base, #IRQ_MASK_LOW_OFF] + mov \irqnr, #31 + ands \irqstat, \irqstat, \tmp + bne 1001f + + @ if no low interrupts set, check high interrupts + ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF] + ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF] + mov \irqnr, #63 + ands \irqstat, \irqstat, \tmp + + @ find first active interrupt source +1001: clzne \irqstat, \irqstat + subne \irqnr, \irqnr, \irqstat + .endm -- cgit