1 files changed, 114 insertions, 0 deletions
diff --git a/roms/u-boot-sam460ex/arch/microblaze/cpu/irq.S b/roms/u-boot-sam460ex/arch/microblaze/cpu/irq.S
new file mode 100644
index 000000000..47bba36f2
--- /dev/null
+++ b/roms/u-boot-sam460ex/arch/microblaze/cpu/irq.S
@@ -0,0 +1,114 @@
+/*
+ * (C) Copyright 2007 Michal Simek
+ *
+ * Michal  SIMEK <monstr@monstr.eu>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm/asm.h>
+	.text
+	.global _interrupt_handler
+_interrupt_handler:
+	swi	r2, r1, -4
+	swi	r3, r1, -8
+	swi	r4, r1, -12
+	swi	r5, r1, -16
+	swi	r6, r1, -20
+	swi	r7, r1, -24
+	swi	r8, r1, -28
+	swi	r9, r1, -32
+	swi	r10, r1, -36
+	swi	r11, r1, -40
+	swi	r12, r1, -44
+	swi	r13, r1, -48
+	swi	r14, r1, -52
+	swi	r15, r1, -56
+	swi	r16, r1, -60
+	swi	r17, r1, -64
+	swi	r18, r1, -68
+	swi	r19, r1, -72
+	swi	r20, r1, -76
+	swi	r21, r1, -80
+	swi	r22, r1, -84
+	swi	r23, r1, -88
+	swi	r24, r1, -92
+	swi	r25, r1, -96
+	swi	r26, r1, -100
+	swi	r27, r1, -104
+	swi	r28, r1, -108
+	swi	r29, r1, -112
+	swi	r30, r1, -116
+	swi	r31, r1, -120
+	addik	r1, r1, -124
+	brlid	r15, interrupt_handler
+	nop
+	nop
+	addik	r1, r1, 124
+	lwi	r31, r1, -120
+	lwi	r30, r1, -116
+	lwi	r29, r1, -112
+	lwi	r28, r1, -108
+	lwi	r27, r1, -104
+	lwi	r26, r1, -100
+	lwi	r25, r1, -96
+	lwi	r24, r1, -92
+	lwi	r23, r1, -88
+	lwi	r22, r1, -84
+	lwi	r21, r1, -80
+	lwi	r20, r1, -76
+	lwi	r19, r1, -72
+	lwi	r18, r1, -68
+	lwi	r17, r1, -64
+	lwi	r16, r1, -60
+	lwi	r15, r1, -56
+	lwi	r14, r1, -52
+	lwi	r13, r1, -48
+	lwi	r12, r1, -44
+	lwi	r11, r1, -40
+	lwi	r10, r1, -36
+	lwi	r9, r1, -32
+	lwi	r8, r1, -28
+	lwi	r7, r1, -24
+	lwi	r6, r1, -20
+	lwi	r5, r1, -16
+	lwi	r4, r1, -12
+	lwi	r3, r1, -8
+	lwi	r2, r1, -4
+
+	/* enable_interrupt */
+#ifdef XILINX_USE_MSR_INSTR
+	msrset	r0, 2
+#else
+	/* FIXME unstable in stressed mode - two irqs */
+	nop
+	addi	r1, r1, -4
+	swi	r12, r1, 0
+	mfs	r12, rmsr
+	ori	r12, r12, 2
+	mts	rmsr, r12
+	lwi	r12, r1, 0
+	addi	r1, r1, 4
+	nop
+#endif
+	bra	r14
+	nop
+	nop
+	.size _interrupt_handler,.-_interrupt_handler