1 files changed, 32 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/entry-macro.S b/include/asm-arm/arch-at91/entry-macro.S
new file mode 100644
index 000000000000..cc1d850a0788
--- /dev/null
+++ b/include/asm-arm/arch-at91/entry-macro.S
@@ -0,0 +1,32 @@
+/*
+ * include/asm-arm/arch-at91/entry-macro.S
+ *
+ *  Copyright (C) 2003-2005 SAN People
+ *
+ * Low-level IRQ helper macros for AT91RM9200 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 <asm/hardware.h>
+#include <asm/arch/at91_aic.h>
+
+        .macro  disable_fiq
+        .endm
+
+        .macro  get_irqnr_preamble, base, tmp
+        .endm
+
+        .macro  arch_ret_to_user, tmp1, tmp2
+        .endm
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+        ldr     \base, =(AT91_VA_BASE_SYS + AT91_AIC)           @ base virtual address of AIC peripheral
+        ldr     \irqnr, [\base, #(AT91_AIC_IVR - AT91_AIC)]     @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
+        ldr     \irqstat, [\base, #(AT91_AIC_ISR - AT91_AIC)]   @ read interrupt source number
+        teq     \irqstat, #0                                    @ ISR is 0 when no current interrupt, or spurious interrupt
+        streq   \tmp, [\base, #(AT91_AIC_EOICR - AT91_AIC)]     @ not going to be handled further, then ACK it now.
+        .endm
+