[Blackfin] arch: Merge BF561 support into ints-priority

Merge single core ints-priority-sc.c and dual core ints-priority-dc.c
into one common code ints-priority.c

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

3 files changed, 97 insertions, 520 deletions

diff --git a/arch/blackfin/mach-common/Makefile b/arch/blackfin/mach-common/Makefile
index 8636d42..15e33ca 100644
--- a/arch/blackfin/mach-common/Makefile
+++ b/arch/blackfin/mach-common/Makefile
@@ -4,8 +4,6 @@
 
 obj-y := \
 	cache.o cacheinit.o entry.o \
-	interrupt.o lock.o irqpanic.o arch_checks.o
+	interrupt.o lock.o irqpanic.o arch_checks.o ints-priority.o
 
-obj-$(CONFIG_BFIN_SINGLE_CORE)   += ints-priority-sc.o
-obj-$(CONFIG_BFIN_DUAL_CORE)     += ints-priority-dc.o
 obj-$(CONFIG_PM)                 += pm.o dpmc.o
diff --git a/arch/blackfin/mach-common/ints-priority-dc.c b/arch/blackfin/mach-common/ints-priority-dc.c
deleted file mode 100644
index 8d18d6b..0000000
--- a/arch/blackfin/mach-common/ints-priority-dc.c
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * File:         arch/blackfin/mach-common/ints-priority-dc.c
- * Based on:
- * Author:
- *
- * Created:      ?
- * Description:  Set up the interrupt priorities
- *
- * Modified:
- *               1996 Roman Zippel
- *               1999 D. Jeff Dionne <jeff@uclinux.org>
- *               2000-2001 Lineo, Inc. D. Jefff Dionne <jeff@lineo.ca>
- *               2002 Arcturus Networks Inc. MaTed <mated@sympatico.ca>
- *               2003 Metrowerks/Motorola
- *               2003 Bas Vermeulen <bas@buyways.nl>
- *               Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs:         Enter bugs at http://blackfin.uclinux.org/
- *
- * 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, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#include <linux/module.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-#include <linux/irq.h>
-#ifdef CONFIG_KGDB
-#include <linux/kgdb.h>
-#endif
-#include <asm/traps.h>
-#include <asm/blackfin.h>
-#include <asm/gpio.h>
-#include <asm/irq_handler.h>
-
-/*
- * NOTES:
- * - we have separated the physical Hardware interrupt from the
- * levels that the LINUX kernel sees (see the description in irq.h)
- * -
- */
-
-/* Initialize this to an actual value to force it into the .data
- * section so that we know it is properly initialized at entry into
- * the kernel but before bss is initialized to zero (which is where
- * it would live otherwise).  The 0x1f magic represents the IRQs we
- * cannot actually mask out in hardware.
- */
-unsigned long irq_flags = 0x1f;
-
-/* The number of spurious interrupts */
-atomic_t num_spurious;
-
-struct ivgx {
-	/* irq number for request_irq, available in mach-bf561/irq.h */
-	int irqno;
-	/* corresponding bit in the SICA_ISR0 register */
-	int isrflag0;
-	/* corresponding bit in the SICA_ISR1 register */
-	int isrflag1;
-} ivg_table[NR_PERI_INTS];
-
-struct ivg_slice {
-	/* position of first irq in ivg_table for given ivg */
-	struct ivgx *ifirst;
-	struct ivgx *istop;
-} ivg7_13[IVG13 - IVG7 + 1];
-
-static void search_IAR(void);
-
-/*
- * Search SIC_IAR and fill tables with the irqvalues
- * and their positions in the SIC_ISR register.
- */
-static void __init search_IAR(void)
-{
-	unsigned ivg, irq_pos = 0;
-	for (ivg = 0; ivg <= IVG13 - IVG7; ivg++) {
-		int irqn;
-
-		ivg7_13[ivg].istop = ivg7_13[ivg].ifirst = &ivg_table[irq_pos];
-
-		for (irqn = 0; irqn < NR_PERI_INTS; irqn++) {
-			int iar_shift = (irqn & 7) * 4;
-			if (ivg ==
-			    (0xf &
-			     bfin_read32((unsigned long *)SICA_IAR0 +
-					 (irqn >> 3)) >> iar_shift)) {
-				ivg_table[irq_pos].irqno = IVG7 + irqn;
-				ivg_table[irq_pos].isrflag0 =
-				    (irqn < 32 ? (1 << irqn) : 0);
-				ivg_table[irq_pos].isrflag1 =
-				    (irqn < 32 ? 0 : (1 << (irqn - 32)));
-				ivg7_13[ivg].istop++;
-				irq_pos++;
-			}
-		}
-	}
-}
-
-/*
- * This is for BF561 internal IRQs
- */
-
-static void ack_noop(unsigned int irq)
-{
-	/* Dummy function.  */
-}
-
-static void bf561_core_mask_irq(unsigned int irq)
-{
-	irq_flags &= ~(1 << irq);
-	if (!irqs_disabled())
-		local_irq_enable();
-}
-
-static void bf561_core_unmask_irq(unsigned int irq)
-{
-	irq_flags |= 1 << irq;
-	/*
-	 * If interrupts are enabled, IMASK must contain the same value
-	 * as irq_flags.  Make sure that invariant holds.  If interrupts
-	 * are currently disabled we need not do anything; one of the
-	 * callers will take care of setting IMASK to the proper value
-	 * when reenabling interrupts.
-	 * local_irq_enable just does "STI irq_flags", so it's exactly
-	 * what we need.
-	 */
-	if (!irqs_disabled())
-		local_irq_enable();
-	return;
-}
-
-static void bf561_internal_mask_irq(unsigned int irq)
-{
-	unsigned long irq_mask;
-	if ((irq - (IRQ_CORETMR + 1)) < 32) {
-		irq_mask = (1 << (irq - (IRQ_CORETMR + 1)));
-		bfin_write_SICA_IMASK0(bfin_read_SICA_IMASK0() & ~irq_mask);
-	} else {
-		irq_mask = (1 << (irq - (IRQ_CORETMR + 1) - 32));
-		bfin_write_SICA_IMASK1(bfin_read_SICA_IMASK1() & ~irq_mask);
-	}
-}
-
-static void bf561_internal_unmask_irq(unsigned int irq)
-{
-	unsigned long irq_mask;
-
-	if ((irq - (IRQ_CORETMR + 1)) < 32) {
-		irq_mask = (1 << (irq - (IRQ_CORETMR + 1)));
-		bfin_write_SICA_IMASK0(bfin_read_SICA_IMASK0() | irq_mask);
-	} else {
-		irq_mask = (1 << (irq - (IRQ_CORETMR + 1) - 32));
-		bfin_write_SICA_IMASK1(bfin_read_SICA_IMASK1() | irq_mask);
-	}
-	SSYNC();
-}
-
-static struct irq_chip bf561_core_irqchip = {
-	.ack = ack_noop,
-	.mask = bf561_core_mask_irq,
-	.unmask = bf561_core_unmask_irq,
-};
-
-static struct irq_chip bf561_internal_irqchip = {
-	.ack = ack_noop,
-	.mask = bf561_internal_mask_irq,
-	.unmask = bf561_internal_unmask_irq,
-};
-
-static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
-static unsigned short gpio_edge_triggered[gpio_bank(MAX_BLACKFIN_GPIOS)];
-
-static void bf561_gpio_ack_irq(unsigned int irq)
-{
-	u16 gpionr = irq - IRQ_PF0;
-
-	if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
-		set_gpio_data(gpionr, 0);
-		SSYNC();
-	}
-}
-
-static void bf561_gpio_mask_ack_irq(unsigned int irq)
-{
-	u16 gpionr = irq - IRQ_PF0;
-
-	if (gpio_edge_triggered[gpio_bank(gpionr)] & gpio_bit(gpionr)) {
-		set_gpio_data(gpionr, 0);
-		SSYNC();
-	}
-
-	set_gpio_maska(gpionr, 0);
-	SSYNC();
-}
-
-static void bf561_gpio_mask_irq(unsigned int irq)
-{
-	set_gpio_maska(irq - IRQ_PF0, 0);
-	SSYNC();
-}
-
-static void bf561_gpio_unmask_irq(unsigned int irq)
-{
-	set_gpio_maska(irq - IRQ_PF0, 1);
-	SSYNC();
-}
-
-static unsigned int bf561_gpio_irq_startup(unsigned int irq)
-{
-	unsigned int ret;
-	char buf[8];
-	u16 gpionr = irq - IRQ_PF0;
-
-	if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
-		snprintf(buf, sizeof buf, "IRQ %d", irq);
-		ret = gpio_request(gpionr, buf);
-		if (ret)
-			return ret;
-
-	}
-
-	gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
-	bf561_gpio_unmask_irq(irq);
-
-  return ret;
-
-}
-
-static void bf561_gpio_irq_shutdown(unsigned int irq)
-{
-	bf561_gpio_mask_irq(irq);
-	gpio_free(irq - IRQ_PF0);
-	gpio_enabled[gpio_bank(irq - IRQ_PF0)] &= ~gpio_bit(irq - IRQ_PF0);
-}
-
-static int bf561_gpio_irq_type(unsigned int irq, unsigned int type)
-{
-
-	unsigned int ret;
-	char buf[8];
-	u16 gpionr = irq - IRQ_PF0;
-
-
-		if (type == IRQ_TYPE_PROBE) {
-			/* only probe unenabled GPIO interrupt lines */
-			if (gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))
-				return 0;
-			type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
-
-		}
-
-		if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING |
-			    IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
-
-		if (!(gpio_enabled[gpio_bank(gpionr)] & gpio_bit(gpionr))) {
-			snprintf(buf, sizeof buf, "IRQ %d", irq);
-			ret = gpio_request(gpionr, buf);
-			if (ret)
-				return ret;
-
-		}
-
-			gpio_enabled[gpio_bank(gpionr)] |= gpio_bit(gpionr);
-		} else {
-			gpio_enabled[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
-			return 0;
-		}
-
-
-		set_gpio_dir(gpionr, 0);
-		set_gpio_inen(gpionr, 1);
-
-
-		if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
-			gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr);
-			set_gpio_edge(gpionr, 1);
-		} else {
-			set_gpio_edge(gpionr, 0);
-			gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
-		}
-
-		if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
-		    == (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
-			set_gpio_both(gpionr, 1);
-		else
-			set_gpio_both(gpionr, 0);
-
-		if ((type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW)))
-			set_gpio_polar(gpionr, 1);	/* low or falling edge denoted by one */
-		else
-			set_gpio_polar(gpionr, 0);	/* high or rising edge denoted by zero */
-
-	SSYNC();
-
-	if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
-		set_irq_handler(irq, handle_edge_irq);
-	else
-		set_irq_handler(irq, handle_level_irq);
-
-	return 0;
-}
-
-static struct irq_chip bf561_gpio_irqchip = {
-	.ack = bf561_gpio_ack_irq,
-	.mask = bf561_gpio_mask_irq,
-	.mask_ack = bf561_gpio_mask_ack_irq,
-	.unmask = bf561_gpio_unmask_irq,
-	.set_type = bf561_gpio_irq_type,
-	.startup = bf561_gpio_irq_startup,
-	.shutdown = bf561_gpio_irq_shutdown
-};
-
-static void bf561_demux_gpio_irq(unsigned int inta_irq,
-				 struct irq_desc *intb_desc)
-{
-	int irq, flag_d, mask;
-	u16 gpio;
-
-	switch (inta_irq) {
-	case IRQ_PROG0_INTA:
-		irq = IRQ_PF0;
-		break;
-	case IRQ_PROG1_INTA:
-		irq = IRQ_PF16;
-		break;
-	case IRQ_PROG2_INTA:
-		irq = IRQ_PF32;
-		break;
-	default:
-		dump_stack();
-		return;
-	}
-
-	gpio = irq - IRQ_PF0;
-
-		flag_d = get_gpiop_data(gpio);
-		mask = flag_d & (gpio_enabled[gpio_bank(gpio)] &
-			      get_gpiop_maska(gpio));
-
-			do {
-				if (mask & 1) {
-					struct irq_desc *desc = irq_desc + irq;
-					desc->handle_irq(irq, desc);
-				}
-				irq++;
-				mask >>= 1;
-			} while (mask);
-
-
-}
-
-void __init init_exception_vectors(void)
-{
-	SSYNC();
-
-	/* cannot program in software:
-	 * evt0 - emulation (jtag)
-	 * evt1 - reset
-	 */
-	bfin_write_EVT2(evt_nmi);
-	bfin_write_EVT3(trap);
-	bfin_write_EVT5(evt_ivhw);
-	bfin_write_EVT6(evt_timer);
-	bfin_write_EVT7(evt_evt7);
-	bfin_write_EVT8(evt_evt8);
-	bfin_write_EVT9(evt_evt9);
-	bfin_write_EVT10(evt_evt10);
-	bfin_write_EVT11(evt_evt11);
-	bfin_write_EVT12(evt_evt12);
-	bfin_write_EVT13(evt_evt13);
-	bfin_write_EVT14(evt14_softirq);
-	bfin_write_EVT15(evt_system_call);
-	CSYNC();
-}
-
-/*
- * This function should be called during kernel startup to initialize
- * the BFin IRQ handling routines.
- */
-int __init init_arch_irq(void)
-{
-	int irq;
-	unsigned long ilat = 0;
-	/*  Disable all the peripheral intrs  - page 4-29 HW Ref manual */
-	bfin_write_SICA_IMASK0(SIC_UNMASK_ALL);
-	bfin_write_SICA_IMASK1(SIC_UNMASK_ALL);
-	SSYNC();
-
-	bfin_write_SICA_IWR0(IWR_ENABLE_ALL);
-	bfin_write_SICA_IWR1(IWR_ENABLE_ALL);
-
-	local_irq_disable();
-
-	init_exception_buff();
-
-	for (irq = 0; irq <= SYS_IRQS; irq++) {
-		if (irq <= IRQ_CORETMR)
-			set_irq_chip(irq, &bf561_core_irqchip);
-		else
-			set_irq_chip(irq, &bf561_internal_irqchip);
-
-		if ((irq != IRQ_PROG0_INTA) &&
-		    (irq != IRQ_PROG1_INTA) &&
-		    (irq != IRQ_PROG2_INTA))
-			set_irq_handler(irq, handle_simple_irq);
-		else
-			set_irq_chained_handler(irq, bf561_demux_gpio_irq);
-	}
-
-	for (irq = IRQ_PF0; irq <= IRQ_PF47; irq++) {
-		set_irq_chip(irq, &bf561_gpio_irqchip);
-		/* if configured as edge, then will be changed to do_edge_IRQ */
-		set_irq_handler(irq, handle_level_irq);
-	}
-
-	bfin_write_IMASK(0);
-	CSYNC();
-	ilat = bfin_read_ILAT();
-	CSYNC();
-	bfin_write_ILAT(ilat);
-	CSYNC();
-
-	printk(KERN_INFO "Configuring Blackfin Priority Driven Interrupts\n");
-	/* IMASK=xxx is equivalent to STI xx or irq_flags=xx,
-	 * local_irq_enable()
-	 */
-	program_IAR();
-	/* Therefore it's better to setup IARs before interrupts enabled */
-	search_IAR();
-
-	/* Enable interrupts IVG7-15 */
-	irq_flags = irq_flags | IMASK_IVG15 |
-	    IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 |
-	    IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW;
-
-	return 0;
-}
-
-#ifdef CONFIG_DO_IRQ_L1
-__attribute__((l1_text))
-#endif
-void do_irq(int vec, struct pt_regs *fp)
-{
-	if (vec == EVT_IVTMR_P) {
-		vec = IRQ_CORETMR;
-	} else {
-		struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
-		struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
-		unsigned long sic_status0, sic_status1;
-
-		SSYNC();
-		sic_status0 = bfin_read_SICA_IMASK0() & bfin_read_SICA_ISR0();
-		sic_status1 = bfin_read_SICA_IMASK1() & bfin_read_SICA_ISR1();
-
-		for (;; ivg++) {
-			if (ivg >= ivg_stop) {
-				atomic_inc(&num_spurious);
-				return;
-			} else if ((sic_status0 & ivg->isrflag0) ||
-				   (sic_status1 & ivg->isrflag1))
-				break;
-		}
-		vec = ivg->irqno;
-	}
-	asm_do_IRQ(vec, fp);
-
-#ifdef CONFIG_KGDB
-	kgdb_process_breakpoint();
-#endif
-}
diff --git a/arch/blackfin/mach-common/ints-priority-sc.c b/arch/blackfin/mach-common/ints-priority.c
index dec42ac..166dbba 100644
--- a/arch/blackfin/mach-common/ints-priority-sc.c
+++ b/arch/blackfin/mach-common/ints-priority.c
@@ -98,8 +98,7 @@ static void __init search_IAR(void)
 
 		for (irqn = 0; irqn < NR_PERI_INTS; irqn++) {
 			int iar_shift = (irqn & 7) * 4;
-				if (ivg ==
-			    (0xf &
+				if (ivg == (0xf &
 #ifndef CONFIG_BF52x
 			     bfin_read32((unsigned long *)SIC_IAR0 +
 					 (irqn >> 3)) >> iar_shift)) {
@@ -206,8 +205,7 @@ static void bfin_generic_error_mask_irq(unsigned int irq)
 	if (!error_int_mask) {
 		local_irq_disable();
 		bfin_write_SIC_IMASK(bfin_read_SIC_IMASK() &
-				     ~(1 <<
-				       (IRQ_GENERIC_ERROR -
+				     ~(1 << (IRQ_GENERIC_ERROR -
 					(IRQ_CORETMR + 1))));
 		SSYNC();
 		local_irq_enable();
@@ -232,7 +230,7 @@ static struct irq_chip bfin_generic_error_irqchip = {
 };
 
 static void bfin_demux_error_irq(unsigned int int_err_irq,
-				 struct irq_desc *intb_desc)
+				 struct irq_desc *inta_desc)
 {
 	int irq = 0;
 
@@ -446,27 +444,81 @@ static struct irq_chip bfin_gpio_irqchip = {
 	.shutdown = bfin_gpio_irq_shutdown
 };
 
-static void bfin_demux_gpio_irq(unsigned int intb_irq,
-				struct irq_desc *intb_desc)
+static void bfin_demux_gpio_irq(unsigned int inta_irq,
+				struct irq_desc *desc)
 {
-	u16 i;
-	struct irq_desc *desc;
-
-	for (i = 0; i < MAX_BLACKFIN_GPIOS; i += 16) {
-		int irq = IRQ_PF0 + i;
-		int flag_d = get_gpiop_data(i);
-		int mask =
-		    flag_d & (gpio_enabled[gpio_bank(i)] & get_gpiop_maska(i));
-
-		while (mask) {
-			if (mask & 1) {
-				desc = irq_desc + irq;
-				desc->handle_irq(irq, desc);
+	unsigned int i, gpio, mask, irq, search = 0;
+
+	switch (inta_irq) {
+#if defined(CONFIG_BF53x)
+	case IRQ_PROG_INTA:
+		irq = IRQ_PF0;
+		search = 1;
+		break;
+# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
+	case IRQ_MAC_RX:
+		irq = IRQ_PH0;
+		break;
+# endif
+#elif defined(CONFIG_BF52x)
+	case IRQ_PORTF_INTA:
+		irq = IRQ_PF0;
+		break;
+	case IRQ_PORTG_INTA:
+		irq = IRQ_PG0;
+		break;
+	case IRQ_PORTH_INTA:
+		irq = IRQ_PH0;
+		break;
+#elif defined(CONFIG_BF561)
+	case IRQ_PROG0_INTA:
+		irq = IRQ_PF0;
+		break;
+	case IRQ_PROG1_INTA:
+		irq = IRQ_PF16;
+		break;
+	case IRQ_PROG2_INTA:
+		irq = IRQ_PF32;
+		break;
+#endif
+	default:
+		BUG();
+		return;
+	}
+
+	if (search) {
+		for (i = 0; i < MAX_BLACKFIN_GPIOS; i += 16) {
+			irq += i;
+
+			mask = get_gpiop_data(i) &
+				(gpio_enabled[gpio_bank(i)] &
+				get_gpiop_maska(i));
+
+			while (mask) {
+				if (mask & 1) {
+					desc = irq_desc + irq;
+					desc->handle_irq(irq, desc);
+				}
+				irq++;
+				mask >>= 1;
 			}
-			irq++;
-			mask >>= 1;
 		}
+	} else {
+			gpio = irq_to_gpio(irq);
+			mask = get_gpiop_data(gpio) &
+				(gpio_enabled[gpio_bank(gpio)] &
+				get_gpiop_maska(gpio));
+
+			do {
+				if (mask & 1) {
+					desc = irq_desc + irq;
+					desc->handle_irq(irq, desc);
+				}
+				irq++;
+				mask >>= 1;
+			} while (mask);
 	}
+
 }
 
 #else				/* CONFIG_BF54x */
@@ -721,14 +773,13 @@ static struct irq_chip bfin_gpio_irqchip = {
 	.shutdown = bfin_gpio_irq_shutdown
 };
 
-static void bfin_demux_gpio_irq(unsigned int intb_irq,
-				struct irq_desc *intb_desc)
+static void bfin_demux_gpio_irq(unsigned int inta_irq,
+				struct irq_desc *desc)
 {
 	u8 bank, pint_val;
 	u32 request, irq;
-	struct irq_desc *desc;
 
-	switch (intb_irq) {
+	switch (inta_irq) {
 	case IRQ_PINT0:
 		bank = 0;
 		break;
@@ -795,7 +846,7 @@ int __init init_arch_irq(void)
 	int irq;
 	unsigned long ilat = 0;
 	/*  Disable all the peripheral intrs  - page 4-29 HW Ref manual */
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x)
+#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
 	bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
 	bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
 	bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
@@ -812,6 +863,8 @@ int __init init_arch_irq(void)
 
 	local_irq_disable();
 
+	init_exception_buff();
+
 #ifdef CONFIG_BF54x
 # ifdef CONFIG_PINTx_REASSIGN
 	pint[0]->assign = CONFIG_PINT0_ASSIGN;
@@ -874,6 +927,19 @@ int __init init_arch_irq(void)
 				set_irq_chained_handler(irq,
 							bfin_demux_gpio_irq);
 				break;
+#elif defined(CONFIG_BF561)
+			case IRQ_PROG0_INTA:
+				set_irq_chained_handler(irq,
+							bfin_demux_gpio_irq);
+				break;
+			case IRQ_PROG1_INTA:
+				set_irq_chained_handler(irq,
+							bfin_demux_gpio_irq);
+				break;
+			case IRQ_PROG2_INTA:
+				set_irq_chained_handler(irq,
+							bfin_demux_gpio_irq);
+				break;
 #endif
 			default:
 				set_irq_handler(irq, handle_simple_irq);
@@ -893,11 +959,8 @@ int __init init_arch_irq(void)
 	}
 #endif
 
-#ifndef CONFIG_BF54x
-	for (irq = IRQ_PF0; irq < NR_IRQS; irq++) {
-#else
-	for (irq = IRQ_PA0; irq < NR_IRQS; irq++) {
-#endif
+	for (irq = GPIO_IRQ_BASE; irq < NR_IRQS; irq++) {
+
 		set_irq_chip(irq, &bfin_gpio_irqchip);
 		/* if configured as edge, then will be changed to do_edge_IRQ */
 		set_irq_handler(irq, handle_level_irq);
@@ -936,7 +999,7 @@ void do_irq(int vec, struct pt_regs *fp)
 	} else {
 		struct ivgx *ivg = ivg7_13[vec - IVG7].ifirst;
 		struct ivgx *ivg_stop = ivg7_13[vec - IVG7].istop;
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x)
+#if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561)
 		unsigned long sic_status[3];
 
 		SSYNC();