Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / mach-lpc32xx / include / mach / entry-macro.S

diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S b/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S
new file mode 100644 (file)
index 0000000..24ca11b
--- /dev/null
+++ b/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S
@@ -0,0 +1,37 @@
+/*
+ * arch/arm/mach-lpc32xx/include/mach/entry-macro.S
+ *
+ * Author: Kevin Wells <kevin.wells@nxp.com>
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <mach/hardware.h>
+#include <mach/platform.h>
+
+#define LPC32XX_INTC_MASKED_STATUS_OFS 0x8
+
+       .macro  get_irqnr_preamble, base, tmp
+       ldr     \base, =IO_ADDRESS(LPC32XX_MIC_BASE)
+       .endm
+
+/*
+ * Return IRQ number in irqnr. Also return processor Z flag status in CPSR
+ * as set if an interrupt is pending.
+ */
+       .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+       ldr     \irqstat, [\base, #LPC32XX_INTC_MASKED_STATUS_OFS]
+       clz     \irqnr, \irqstat
+       rsb     \irqnr, \irqnr, #31
+       teq     \irqstat, #0
+       .endm