22 files changed, 373 insertions, 184 deletions

diff --git a/arch/sh/kernel/cpu/irq/intc-sh5.c b/arch/sh/kernel/cpu/irq/intc-sh5.c
index d6e0e2bdaad5..de45c6a3e33b 100644
--- a/arch/sh/kernel/cpu/irq/intc-sh5.c
+++ b/arch/sh/kernel/cpu/irq/intc-sh5.c
@@ -184,9 +184,8 @@ int intc_irq_describe(char* p, int irq)
 
 void __init plat_irq_setup(void)
 {
-        unsigned long long __dummy0, __dummy1=~0x00000000100000f0;
+	unsigned long long __dummy0, __dummy1=~0x00000000100000f0;
 	unsigned long reg;
-	unsigned long data;
 	int i;
 
 	intc_virt = onchip_remap(INTC_BASE, 1024, "INTC");
@@ -196,11 +195,8 @@ void __init plat_irq_setup(void)
 
 
 	/* Set default: per-line enable/disable, priority driven ack/eoi */
-	for (i = 0; i < NR_INTC_IRQS; i++) {
-		if (platform_int_priority[i] != NO_PRIORITY) {
-			irq_desc[i].chip = &intc_irq_type;
-		}
-	}
+	for (i = 0; i < NR_INTC_IRQS; i++)
+		irq_desc[i].chip = &intc_irq_type;
 
 
 	/* Disable all interrupts and set all priorities to 0 to avoid trouble */
@@ -211,35 +207,42 @@ void __init plat_irq_setup(void)
 		ctrl_outl( NO_PRIORITY, reg);
 
 
-	/* Set IRLM */
-	/* If all the priorities are set to 'no priority', then
-	 * assume we are using encoded mode.
-	 */
-	irlm = platform_int_priority[IRQ_IRL0] + platform_int_priority[IRQ_IRL1] + \
-		platform_int_priority[IRQ_IRL2] + platform_int_priority[IRQ_IRL3];
-
-	if (irlm == NO_PRIORITY) {
-		/* IRLM = 0 */
-		reg = INTC_ICR_CLEAR;
-		i = IRQ_INTA;
-		printk("Trying to use encoded IRL0-3. IRLs unsupported.\n");
-	} else {
-		/* IRLM = 1 */
-		reg = INTC_ICR_SET;
-		i = IRQ_IRL0;
-	}
-	ctrl_outl(INTC_ICR_IRLM, reg);
-
-	/* Set interrupt priorities according to platform description */
-	for (data = 0, reg = INTC_INTPRI_0; i < NR_INTC_IRQS; i++) {
-		data |= platform_int_priority[i] << ((i % INTC_INTPRI_PPREG) * 4);
-		if ((i % INTC_INTPRI_PPREG) == (INTC_INTPRI_PPREG - 1)) {
-			/* Upon the 7th, set Priority Register */
-			ctrl_outl(data, reg);
-			data = 0;
-			reg += 8;
+#ifdef CONFIG_SH_CAYMAN
+	{
+		unsigned long data;
+
+		/* Set IRLM */
+		/* If all the priorities are set to 'no priority', then
+		 * assume we are using encoded mode.
+		 */
+		irlm = platform_int_priority[IRQ_IRL0] +
+		       platform_int_priority[IRQ_IRL1] +
+		       platform_int_priority[IRQ_IRL2] +
+		       platform_int_priority[IRQ_IRL3];
+		if (irlm == NO_PRIORITY) {
+			/* IRLM = 0 */
+			reg = INTC_ICR_CLEAR;
+			i = IRQ_INTA;
+			printk("Trying to use encoded IRL0-3. IRLs unsupported.\n");
+		} else {
+			/* IRLM = 1 */
+			reg = INTC_ICR_SET;
+			i = IRQ_IRL0;
 		}
-	}
+		ctrl_outl(INTC_ICR_IRLM, reg);
+
+		/* Set interrupt priorities according to platform description */
+		for (data = 0, reg = INTC_INTPRI_0; i < NR_INTC_IRQS; i++) {
+			data |= platform_int_priority[i] <<
+				((i % INTC_INTPRI_PPREG) * 4);
+			if ((i % INTC_INTPRI_PPREG) == (INTC_INTPRI_PPREG - 1)) {
+				/* Upon the 7th, set Priority Register */
+				ctrl_outl(data, reg);
+				data = 0;
+				reg += 8;
+			}
+		}
+#endif
 
 	/*
 	 * And now let interrupts come in.
diff --git a/arch/sh/kernel/cpu/irq/intc.c b/arch/sh/kernel/cpu/irq/intc.c
index 84806b2027f8..da5dae787888 100644
--- a/arch/sh/kernel/cpu/irq/intc.c
+++ b/arch/sh/kernel/cpu/irq/intc.c
@@ -1,7 +1,7 @@
 /*
  * Shared interrupt handling code for IPR and INTC2 types of IRQs.
  *
- * Copyright (C) 2007 Magnus Damm
+ * Copyright (C) 2007, 2008 Magnus Damm
  *
  * Based on intc2.c and ipr.c
  *
@@ -62,6 +62,9 @@ struct intc_desc_int {
 #endif
 
 static unsigned int intc_prio_level[NR_IRQS]; /* for now */
+#ifdef CONFIG_CPU_SH3
+static unsigned long ack_handle[NR_IRQS];
+#endif
 
 static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
 {
@@ -98,17 +101,26 @@ static void write_32(unsigned long addr, unsigned long h, unsigned long data)
 
 static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
 {
+	unsigned long flags;
+	local_irq_save(flags);
 	ctrl_outb(set_field(ctrl_inb(addr), data, h), addr);
+	local_irq_restore(flags);
 }
 
 static void modify_16(unsigned long addr, unsigned long h, unsigned long data)
 {
+	unsigned long flags;
+	local_irq_save(flags);
 	ctrl_outw(set_field(ctrl_inw(addr), data, h), addr);
+	local_irq_restore(flags);
 }
 
 static void modify_32(unsigned long addr, unsigned long h, unsigned long data)
 {
+	unsigned long flags;
+	local_irq_save(flags);
 	ctrl_outl(set_field(ctrl_inl(addr), data, h), addr);
+	local_irq_restore(flags);
 }
 
 enum {	REG_FN_ERR = 0, REG_FN_WRITE_BASE = 1, REG_FN_MODIFY_BASE = 5 };
@@ -219,6 +231,25 @@ static void intc_disable(unsigned int irq)
 	}
 }
 
+#ifdef CONFIG_CPU_SH3
+static void intc_mask_ack(unsigned int irq)
+{
+	struct intc_desc_int *d = get_intc_desc(irq);
+	unsigned long handle = ack_handle[irq];
+	unsigned long addr;
+
+	intc_disable(irq);
+
+	/* read register and write zero only to the assocaited bit */
+
+	if (handle) {
+		addr = INTC_REG(d, _INTC_ADDR_D(handle), 0);
+		ctrl_inb(addr);
+		ctrl_outb(0x3f ^ set_field(0, 1, handle), addr);
+	}
+}
+#endif
+
 static struct intc_handle_int *intc_find_irq(struct intc_handle_int *hp,
 					     unsigned int nr_hp,
 					     unsigned int irq)
@@ -280,7 +311,12 @@ static unsigned char intc_irq_sense_table[IRQ_TYPE_SENSE_MASK + 1] = {
 	[IRQ_TYPE_EDGE_FALLING] = VALID(0),
 	[IRQ_TYPE_EDGE_RISING] = VALID(1),
 	[IRQ_TYPE_LEVEL_LOW] = VALID(2),
+	/* SH7706, SH7707 and SH7709 do not support high level triggered */
+#if !defined(CONFIG_CPU_SUBTYPE_SH7706) && \
+    !defined(CONFIG_CPU_SUBTYPE_SH7707) && \
+    !defined(CONFIG_CPU_SUBTYPE_SH7709)
 	[IRQ_TYPE_LEVEL_HIGH] = VALID(3),
+#endif
 };
 
 static int intc_set_sense(unsigned int irq, unsigned int type)
@@ -430,6 +466,40 @@ static unsigned int __init intc_prio_data(struct intc_desc *desc,
 	return 0;
 }
 
+#ifdef CONFIG_CPU_SH3
+static unsigned int __init intc_ack_data(struct intc_desc *desc,
+					  struct intc_desc_int *d,
+					  intc_enum enum_id)
+{
+	struct intc_mask_reg *mr = desc->ack_regs;
+	unsigned int i, j, fn, mode;
+	unsigned long reg_e, reg_d;
+
+	for (i = 0; mr && enum_id && i < desc->nr_ack_regs; i++) {
+		mr = desc->ack_regs + i;
+
+		for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
+			if (mr->enum_ids[j] != enum_id)
+				continue;
+
+			fn = REG_FN_MODIFY_BASE;
+			mode = MODE_ENABLE_REG;
+			reg_e = mr->set_reg;
+			reg_d = mr->set_reg;
+
+			fn += (mr->reg_width >> 3) - 1;
+			return _INTC_MK(fn, mode,
+					intc_get_reg(d, reg_e),
+					intc_get_reg(d, reg_d),
+					1,
+					(mr->reg_width - 1) - j);
+		}
+	}
+
+	return 0;
+}
+#endif
+
 static unsigned int __init intc_sense_data(struct intc_desc *desc,
 					   struct intc_desc_int *d,
 					   intc_enum enum_id)
@@ -530,6 +600,11 @@ static void __init intc_register_irq(struct intc_desc *desc,
 
 	/* irq should be disabled by default */
 	d->chip.mask(irq);
+
+#ifdef CONFIG_CPU_SH3
+	if (desc->ack_regs)
+		ack_handle[irq] = intc_ack_data(desc, d, enum_id);
+#endif
 }
 
 static unsigned int __init save_reg(struct intc_desc_int *d,
@@ -560,6 +635,9 @@ void __init register_intc_controller(struct intc_desc *desc)
 	d->nr_reg += desc->prio_regs ? desc->nr_prio_regs * 2 : 0;
 	d->nr_reg += desc->sense_regs ? desc->nr_sense_regs : 0;
 
+#ifdef CONFIG_CPU_SH3
+	d->nr_reg += desc->ack_regs ? desc->nr_ack_regs : 0;
+#endif
 	d->reg = alloc_bootmem(d->nr_reg * sizeof(*d->reg));
 #ifdef CONFIG_SMP
 	d->smp = alloc_bootmem(d->nr_reg * sizeof(*d->smp));
@@ -592,14 +670,23 @@ void __init register_intc_controller(struct intc_desc *desc)
 		}
 	}
 
-	BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
-
 	d->chip.name = desc->name;
 	d->chip.mask = intc_disable;
 	d->chip.unmask = intc_enable;
 	d->chip.mask_ack = intc_disable;
 	d->chip.set_type = intc_set_sense;
 
+#ifdef CONFIG_CPU_SH3
+	if (desc->ack_regs) {
+		for (i = 0; i < desc->nr_ack_regs; i++)
+			k += save_reg(d, k, desc->ack_regs[i].set_reg, 0);
+
+		d->chip.mask_ack = intc_mask_ack;
+	}
+#endif
+
+	BUG_ON(k > 256); /* _INTC_ADDR_E() and _INTC_ADDR_D() are 8 bits */
+
 	for (i = 0; i < desc->nr_vectors; i++) {
 		struct intc_vect *vect = desc->vectors + i;
 
diff --git a/arch/sh/kernel/cpu/sh2a/fpu.c b/arch/sh/kernel/cpu/sh2a/fpu.c
index 5627c0b3ffa8..6df2fb98eb30 100644
--- a/arch/sh/kernel/cpu/sh2a/fpu.c
+++ b/arch/sh/kernel/cpu/sh2a/fpu.c
@@ -300,7 +300,7 @@ static int denormal_addf(int hx, int hy)
 		iy = hy & 0x7fffffff;
 		if (iy < 0x00800000) {
 			ix = denormal_subf1(ix, iy);
-			if (ix < 0) {
+			if ((int) ix < 0) {
 				ix = -ix;
 				sign ^= 0x80000000;
 			}
@@ -385,7 +385,7 @@ static long long denormal_addd(long long hx, long long hy)
 		iy = hy & 0x7fffffffffffffffLL;
 		if (iy < 0x0010000000000000LL) {
 			ix = denormal_subd1(ix, iy);
-			if (ix < 0) {
+			if ((int) ix < 0) {
 				ix = -ix;
 				sign ^= 0x8000000000000000LL;
 			}
diff --git a/arch/sh/kernel/cpu/sh3/Makefile b/arch/sh/kernel/cpu/sh3/Makefile
index 3ae4d9111f19..511de55af832 100644
--- a/arch/sh/kernel/cpu/sh3/Makefile
+++ b/arch/sh/kernel/cpu/sh3/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the Linux/SuperH SH-3 backends.
 #
 
-obj-y	:= ex.o probe.o entry.o
+obj-y	:= ex.o probe.o entry.o setup-sh3.o
 
 # CPU subtype setup
 obj-$(CONFIG_CPU_SUBTYPE_SH7705)	+= setup-sh7705.o
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh3.c b/arch/sh/kernel/cpu/sh3/setup-sh3.c
new file mode 100644
index 000000000000..c98846857855
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh3/setup-sh3.c
@@ -0,0 +1,71 @@
+/*
+ * Shared SH3 Setup code
+ *
+ *  Copyright (C) 2008  Magnus Damm
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+
+/* All SH3 devices are equipped with IRQ0->5 (except sh7708) */
+
+enum {
+	UNUSED = 0,
+
+	/* interrupt sources */
+	IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5,
+};
+
+static struct intc_vect vectors_irq0123[] __initdata = {
+	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
+	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
+};
+
+static struct intc_vect vectors_irq45[] __initdata = {
+	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+};
+
+static struct intc_prio_reg prio_registers[] __initdata = {
+	{ 0xa4000016, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
+	{ 0xa4000018, 0, 16, 4, /* IPRD */ { 0, 0, IRQ5, IRQ4 } },
+};
+
+static struct intc_mask_reg ack_registers[] __initdata = {
+	{ 0xa4000004, 0, 8, /* IRR0 */
+	  { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
+};
+
+static struct intc_sense_reg sense_registers[] __initdata = {
+	{ 0xa4000010, 16, 2, { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
+};
+
+static DECLARE_INTC_DESC_ACK(intc_desc_irq0123, "sh3-irq0123",
+			     vectors_irq0123, NULL, NULL,
+			     prio_registers, sense_registers, ack_registers);
+
+static DECLARE_INTC_DESC_ACK(intc_desc_irq45, "sh3-irq45",
+			     vectors_irq45, NULL, NULL,
+			     prio_registers, sense_registers, ack_registers);
+
+#define INTC_ICR1		0xa4000010UL
+#define INTC_ICR1_IRQLVL	(1<<14)
+
+void __init plat_irq_setup_pins(int mode)
+{
+	if (mode == IRQ_MODE_IRQ) {
+		ctrl_outw(ctrl_inw(INTC_ICR1) & ~INTC_ICR1_IRQLVL, INTC_ICR1);
+		register_intc_controller(&intc_desc_irq0123);
+		return;
+	}
+	BUG();
+}
+
+void __init plat_irq_setup_sh3(void)
+{
+	register_intc_controller(&intc_desc_irq45);
+}
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7705.c b/arch/sh/kernel/cpu/sh3/setup-sh7705.c
index f581534cb732..6468ae86b944 100644
--- a/arch/sh/kernel/cpu/sh3/setup-sh7705.c
+++ b/arch/sh/kernel/cpu/sh3/setup-sh7705.c
@@ -37,7 +37,7 @@ enum {
 };
 
 static struct intc_vect vectors[] __initdata = {
-	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+	/* IRQ0->5 are handled in setup-sh3.c */
 	INTC_VECT(PINT07, 0x700), INTC_VECT(PINT815, 0x720),
 	INTC_VECT(DMAC_DEI0, 0x800), INTC_VECT(DMAC_DEI1, 0x820),
 	INTC_VECT(DMAC_DEI2, 0x840), INTC_VECT(DMAC_DEI3, 0x860),
@@ -48,7 +48,7 @@ static struct intc_vect vectors[] __initdata = {
 	INTC_VECT(ADC_ADI, 0x980),
 	INTC_VECT(USB_USI0, 0xa20), INTC_VECT(USB_USI1, 0xa40),
 	INTC_VECT(TPU0, 0xc00), INTC_VECT(TPU1, 0xc20),
-	INTC_VECT(TPU3, 0xc80), INTC_VECT(TPU1, 0xca0),
+	INTC_VECT(TPU2, 0xc80), INTC_VECT(TPU3, 0xca0),
 	INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
 	INTC_VECT(TMU2_TUNI, 0x440), INTC_VECT(TMU2_TICPI, 0x460),
 	INTC_VECT(RTC_ATI, 0x480), INTC_VECT(RTC_PRI, 0x4a0),
@@ -81,14 +81,6 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 static DECLARE_INTC_DESC(intc_desc, "sh7705", vectors, groups,
 			 NULL, prio_registers, NULL);
 
-static struct intc_vect vectors_irq[] __initdata = {
-	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
-	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
-};
-
-static DECLARE_INTC_DESC(intc_desc_irq, "sh7705-irq", vectors_irq, NULL,
-			 NULL, prio_registers, NULL);
-
 static struct plat_sci_port sci_platform_data[] = {
 	{
 		.mapbase	= 0xa4410000,
@@ -159,16 +151,8 @@ static int __init sh7705_devices_setup(void)
 }
 __initcall(sh7705_devices_setup);
 
-void __init plat_irq_setup_pins(int mode)
-{
-	if (mode == IRQ_MODE_IRQ) {
-		register_intc_controller(&intc_desc_irq);
-		return;
-	}
-	BUG();
-}
-
 void __init plat_irq_setup(void)
 {
 	register_intc_controller(&intc_desc);
+	plat_irq_setup_sh3();
 }
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh770x.c b/arch/sh/kernel/cpu/sh3/setup-sh770x.c
index d3733b13ea52..93c55e2ed952 100644
--- a/arch/sh/kernel/cpu/sh3/setup-sh770x.c
+++ b/arch/sh/kernel/cpu/sh3/setup-sh770x.c
@@ -52,7 +52,7 @@ static struct intc_vect vectors[] __initdata = {
 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
     defined(CONFIG_CPU_SUBTYPE_SH7709)
-	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+	/* IRQ0->5 are handled in setup-sh3.c */
 	INTC_VECT(DMAC_DEI0, 0x800), INTC_VECT(DMAC_DEI1, 0x820),
 	INTC_VECT(DMAC_DEI2, 0x840), INTC_VECT(DMAC_DEI3, 0x860),
 	INTC_VECT(ADC_ADI, 0x980),
@@ -104,18 +104,6 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 static DECLARE_INTC_DESC(intc_desc, "sh770x", vectors, groups,
 			 NULL, prio_registers, NULL);
 
-#if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7707) || \
-    defined(CONFIG_CPU_SUBTYPE_SH7709)
-static struct intc_vect vectors_irq[] __initdata = {
-	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
-	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
-};
-
-static DECLARE_INTC_DESC(intc_desc_irq, "sh770x-irq", vectors_irq, NULL,
-			 NULL, prio_registers, NULL);
-#endif
-
 static struct resource rtc_resources[] = {
 	[0] =	{
 		.start	= 0xfffffec0,
@@ -194,24 +182,12 @@ static int __init sh770x_devices_setup(void)
 }
 __initcall(sh770x_devices_setup);
 
-#define INTC_ICR1		0xa4000010UL
-#define INTC_ICR1_IRQLVL	(1<<14)
-
-void __init plat_irq_setup_pins(int mode)
+void __init plat_irq_setup(void)
 {
-	if (mode == IRQ_MODE_IRQ) {
+	register_intc_controller(&intc_desc);
 #if defined(CONFIG_CPU_SUBTYPE_SH7706) || \
     defined(CONFIG_CPU_SUBTYPE_SH7707) || \
     defined(CONFIG_CPU_SUBTYPE_SH7709)
-		ctrl_outw(ctrl_inw(INTC_ICR1) & ~INTC_ICR1_IRQLVL, INTC_ICR1);
-		register_intc_controller(&intc_desc_irq);
-		return;
+	plat_irq_setup_sh3();
 #endif
-	}
-	BUG();
-}
-
-void __init plat_irq_setup(void)
-{
-	register_intc_controller(&intc_desc);
 }
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7710.c b/arch/sh/kernel/cpu/sh3/setup-sh7710.c
index 7406c9ad9259..77eee481de47 100644
--- a/arch/sh/kernel/cpu/sh3/setup-sh7710.c
+++ b/arch/sh/kernel/cpu/sh3/setup-sh7710.c
@@ -38,7 +38,7 @@ enum {
 };
 
 static struct intc_vect vectors[] __initdata = {
-	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
+	/* IRQ0->5 are handled in setup-sh3.c */
 	INTC_VECT(DMAC_DEI0, 0x800), INTC_VECT(DMAC_DEI1, 0x820),
 	INTC_VECT(DMAC_DEI2, 0x840), INTC_VECT(DMAC_DEI3, 0x860),
 	INTC_VECT(SCIF0_ERI, 0x880), INTC_VECT(SCIF0_RXI, 0x8a0),
@@ -79,10 +79,7 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 	{ 0xa4000016, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
 	{ 0xa4000018, 0, 16, 4, /* IPRD */ { 0, 0, IRQ5, IRQ4 } },
 	{ 0xa400001a, 0, 16, 4, /* IPRE */ { DMAC1, SCIF0, SCIF1 } },
-	{ 0xa4080000, 0, 16, 4, /* IPRF */ { 0, DMAC2 } },
-#ifdef CONFIG_CPU_SUBTYPE_SH7710
-	{ 0xa4080000, 0, 16, 4, /* IPRF */ { IPSEC } },
-#endif
+	{ 0xa4080000, 0, 16, 4, /* IPRF */ { IPSEC, DMAC2 } },
 	{ 0xa4080002, 0, 16, 4, /* IPRG */ { EDMAC0, EDMAC1, EDMAC2 } },
 	{ 0xa4080004, 0, 16, 4, /* IPRH */ { 0, 0, 0, SIOF0 } },
 	{ 0xa4080006, 0, 16, 4, /* IPRI */ { 0, 0, SIOF1 } },
@@ -91,14 +88,6 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 static DECLARE_INTC_DESC(intc_desc, "sh7710", vectors, groups,
 			 NULL, prio_registers, NULL);
 
-static struct intc_vect vectors_irq[] __initdata = {
-	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
-	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
-};
-
-static DECLARE_INTC_DESC(intc_desc_irq, "sh7710-irq", vectors_irq, NULL,
-			 NULL, prio_registers, NULL);
-
 static struct resource rtc_resources[] = {
 	[0] =	{
 		.start	= 0xa413fec0,
@@ -170,16 +159,8 @@ static int __init sh7710_devices_setup(void)
 }
 __initcall(sh7710_devices_setup);
 
-void __init plat_irq_setup_pins(int mode)
-{
-	if (mode == IRQ_MODE_IRQ) {
-		register_intc_controller(&intc_desc_irq);
-		return;
-	}
-	BUG();
-}
-
 void __init plat_irq_setup(void)
 {
 	register_intc_controller(&intc_desc);
+	plat_irq_setup_sh3();
 }
diff --git a/arch/sh/kernel/cpu/sh3/setup-sh7720.c b/arch/sh/kernel/cpu/sh3/setup-sh7720.c
index 8028082527c5..f807a21b066c 100644
--- a/arch/sh/kernel/cpu/sh3/setup-sh7720.c
+++ b/arch/sh/kernel/cpu/sh3/setup-sh7720.c
@@ -19,10 +19,6 @@
 #include <linux/serial_sci.h>
 #include <asm/rtc.h>
 
-#define INTC_ICR1	0xA4140010UL
-#define INTC_ICR_IRLM   0x4000
-#define INTC_ICR_IRQ	(~INTC_ICR_IRLM)
-
 static struct resource rtc_resources[] = {
 	[0] = {
 		.start	= 0xa413fec0,
@@ -170,6 +166,7 @@ enum {
 };
 
 static struct intc_vect vectors[] __initdata = {
+	/* IRQ0->5 are handled in setup-sh3.c */
 	INTC_VECT(TMU0, 0x400),       INTC_VECT(TMU1, 0x420),
 	INTC_VECT(TMU2, 0x440),       INTC_VECT(RTC_ATI, 0x480),
 	INTC_VECT(RTC_PRI, 0x4a0),    INTC_VECT(RTC_CUI, 0x4c0),
@@ -214,11 +211,7 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 	{ 0xA414FEE4UL, 0, 16, 4, /* IPRB */ { WDT, REF_RCMI, SIM, 0 } },
 	{ 0xA4140016UL, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
 	{ 0xA4140018UL, 0, 16, 4, /* IPRD */ { USBF_SPD, TMU_SUNI, IRQ5, IRQ4 } },
-#if defined(CONFIG_CPU_SUBTYPE_SH7720)
 	{ 0xA414001AUL, 0, 16, 4, /* IPRE */ { DMAC1, 0, LCDC, SSL } },
-#else
-	{ 0xA414001AUL, 0, 16, 4, /* IPRE */ { DMAC1, 0, LCDC, 0 } },
-#endif
 	{ 0xA4080000UL, 0, 16, 4, /* IPRF */ { ADC, DMAC2, USBFI, CMT } },
 	{ 0xA4080002UL, 0, 16, 4, /* IPRG */ { SCIF0, SCIF1, 0, 0 } },
 	{ 0xA4080004UL, 0, 16, 4, /* IPRH */ { PINT07, PINT815, TPU, IIC } },
@@ -229,32 +222,8 @@ static struct intc_prio_reg prio_registers[] __initdata = {
 static DECLARE_INTC_DESC(intc_desc, "sh7720", vectors, groups,
 		NULL, prio_registers, NULL);
 
-static struct intc_sense_reg sense_registers[] __initdata = {
-	{ INTC_ICR1, 16, 2, { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
-};
-
-static struct intc_vect vectors_irq[] __initdata = {
-	INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
-	INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
-	INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
-};
-
-static DECLARE_INTC_DESC(intc_irq_desc, "sh7720-irq", vectors_irq,
-		NULL, NULL, prio_registers, sense_registers);
-
-void __init plat_irq_setup_pins(int mode)
-{
-	switch (mode) {
-	case IRQ_MODE_IRQ:
-		ctrl_outw(ctrl_inw(INTC_ICR1) & INTC_ICR_IRQ, INTC_ICR1);
-		register_intc_controller(&intc_irq_desc);
-		break;
-	default:
-		BUG();
-	}
-}
-
 void __init plat_irq_setup(void)
 {
 	register_intc_controller(&intc_desc);
+	plat_irq_setup_sh3();
 }
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
index 805535aa505e..27fa81bef6a0 100644
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
@@ -26,7 +26,7 @@ static int pfc_divisors[] = { 1, 1, 1, 1, 1, 1, 1, 18,
 
 static void master_clk_init(struct clk *clk)
 {
-	clk->rate *= 36;
+	clk->rate *= pfc_divisors[ctrl_inl(FRQMR1) & 0x000f];
 }
 
 static struct clk_ops sh7785_master_clk_ops = {
diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S
index ba8750176d91..05372ed6c568 100644
--- a/arch/sh/kernel/cpu/sh5/entry.S
+++ b/arch/sh/kernel/cpu/sh5/entry.S
@@ -143,12 +143,22 @@ resvec_save_area:
 trap_jtable:
 	.long	do_exception_error		/* 0x000 */
 	.long	do_exception_error		/* 0x020 */
+#ifdef CONFIG_MMU
 	.long	tlb_miss_load				/* 0x040 */
 	.long	tlb_miss_store				/* 0x060 */
+#else
+	.long	do_exception_error
+	.long	do_exception_error
+#endif
 	! ARTIFICIAL pseudo-EXPEVT setting
 	.long	do_debug_interrupt		/* 0x080 */
+#ifdef CONFIG_MMU
 	.long	tlb_miss_load				/* 0x0A0 */
 	.long	tlb_miss_store				/* 0x0C0 */
+#else
+	.long	do_exception_error
+	.long	do_exception_error
+#endif
 	.long	do_address_error_load	/* 0x0E0 */
 	.long	do_address_error_store	/* 0x100 */
 #ifdef CONFIG_SH_FPU
@@ -185,10 +195,18 @@ trap_jtable:
 	.endr
 	.long	do_IRQ			/* 0xA00 */
 	.long	do_IRQ			/* 0xA20 */
+#ifdef CONFIG_MMU
 	.long	itlb_miss_or_IRQ			/* 0xA40 */
+#else
+	.long	do_IRQ
+#endif
 	.long	do_IRQ			/* 0xA60 */
 	.long	do_IRQ			/* 0xA80 */
+#ifdef CONFIG_MMU
 	.long	itlb_miss_or_IRQ			/* 0xAA0 */
+#else
+	.long	do_IRQ
+#endif
 	.long	do_exception_error		/* 0xAC0 */
 	.long	do_address_error_exec	/* 0xAE0 */
 	.rept 8
@@ -274,6 +292,7 @@ not_a_tlb_miss:
 	 * Instead of '.space 1024-TEXT_SIZE' place the RESVEC
 	 * block making sure the final alignment is correct.
 	 */
+#ifdef CONFIG_MMU
 tlb_miss:
 	synco	/* TAKum03020 (but probably a good idea anyway.) */
 	putcon	SP, KCR1
@@ -377,6 +396,9 @@ fixup_to_invoke_general_handler:
 	getcon	KCR1, SP
 	pta	handle_exception, tr0
 	blink	tr0, ZERO
+#else /* CONFIG_MMU */
+	.balign 256
+#endif
 
 /* NB TAKE GREAT CARE HERE TO ENSURE THAT THE INTERRUPT CODE
    DOES END UP AT VBR+0x600 */
@@ -1103,6 +1125,7 @@ restore_all:
  * fpu_error_or_IRQ? is a helper to deflect to the right cause.
  *
  */
+#ifdef CONFIG_MMU
 tlb_miss_load:
 	or	SP, ZERO, r2
 	or	ZERO, ZERO, r3		/* Read */
@@ -1132,6 +1155,7 @@ call_do_page_fault:
 	movi	do_page_fault, r6
         ptabs	r6, tr0
         blink	tr0, ZERO
+#endif /* CONFIG_MMU */
 
 fpu_error_or_IRQA:
 	pta	its_IRQ, tr0
@@ -1481,6 +1505,7 @@ poke_real_address_q:
 	ptabs	LINK, tr0
 	blink	tr0, r63
 
+#ifdef CONFIG_MMU
 /*
  * --- User Access Handling Section
  */
@@ -1604,6 +1629,7 @@ ___clear_user_exit:
 	ptabs	LINK, tr0
 	blink	tr0, ZERO
 
+#endif /* CONFIG_MMU */
 
 /*
  * int __strncpy_from_user(unsigned long __dest, unsigned long __src,
@@ -2014,9 +2040,11 @@ sa_default_restorer:
 	.global asm_uaccess_start	/* Just a marker */
 asm_uaccess_start:
 
+#ifdef CONFIG_MMU
 	.long	___copy_user1, ___copy_user_exit
 	.long	___copy_user2, ___copy_user_exit
 	.long	___clear_user1, ___clear_user_exit
+#endif
 	.long	___strncpy_from_user1, ___strncpy_from_user_exit
 	.long	___strnlen_user1, ___strnlen_user_exit
 	.long	___get_user_asm_b1, ___get_user_asm_b_exit
diff --git a/arch/sh/kernel/cpu/sh5/probe.c b/arch/sh/kernel/cpu/sh5/probe.c
index 31f8cb0f6374..92ad844b5c12 100644
--- a/arch/sh/kernel/cpu/sh5/probe.c
+++ b/arch/sh/kernel/cpu/sh5/probe.c
@@ -15,6 +15,7 @@
 #include <linux/string.h>
 #include <asm/processor.h>
 #include <asm/cache.h>
+#include <asm/tlb.h>
 
 int __init detect_cpu_and_cache_system(void)
 {
@@ -67,5 +68,8 @@ int __init detect_cpu_and_cache_system(void)
 	set_bit(SH_CACHE_MODE_WB, &(boot_cpu_data.dcache.flags));
 #endif
 
+	/* Setup some I/D TLB defaults */
+	sh64_tlb_init();
+
 	return 0;
 }
diff --git a/arch/sh/kernel/early_printk.c b/arch/sh/kernel/early_printk.c
index 957f25611543..6b7d166694e2 100644
--- a/arch/sh/kernel/early_printk.c
+++ b/arch/sh/kernel/early_printk.c
@@ -141,7 +141,9 @@ static void scif_sercon_init(char *s)
  */
 static void scif_sercon_init(char *s)
 {
+	struct uart_port *port = &scif_port;
 	unsigned baud = DEFAULT_BAUD;
+	unsigned int status;
 	char *e;
 
 	if (*s == ',')
@@ -160,19 +162,25 @@ static void scif_sercon_init(char *s)
 			baud = DEFAULT_BAUD;
 	}
 
-	ctrl_outw(0, scif_port.mapbase + 8);
-	ctrl_outw(0, scif_port.mapbase);
+	do {
+		status = sci_in(port, SCxSR);
+	} while (!(status & SCxSR_TEND(port)));
+
+	sci_out(port, SCSCR, 0);	 /* TE=0, RE=0 */
+	sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
+	sci_out(port, SCSMR, 0);
 
 	/* Set baud rate */
-	ctrl_outb((CONFIG_SH_PCLK_FREQ + 16 * baud) /
-		  (32 * baud) - 1, scif_port.mapbase + 4);
-
-	ctrl_outw(12, scif_port.mapbase + 24);
-	ctrl_outw(8, scif_port.mapbase + 24);
-	ctrl_outw(0, scif_port.mapbase + 32);
-	ctrl_outw(0x60, scif_port.mapbase + 16);
-	ctrl_outw(0, scif_port.mapbase + 36);
-	ctrl_outw(0x30, scif_port.mapbase + 8);
+	sci_out(port, SCBRR, (CONFIG_SH_PCLK_FREQ + 16 * baud) /
+		(32 * baud) - 1);
+	udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
+
+	sci_out(port, SCSPTR, 0);
+	sci_out(port, SCxSR, 0x60);
+	sci_out(port, SCLSR, 0);
+
+	sci_out(port, SCFCR, 0);
+	sci_out(port, SCSCR, 0x30);	 /* TE=1, RE=1 */
 }
 #endif /* defined(CONFIG_CPU_SUBTYPE_SH7720) */
 #endif /* !defined(CONFIG_SH_STANDARD_BIOS) */
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 926b2e7b11c1..718bd2356b34 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -1,9 +1,6 @@
-/* $Id: entry.S,v 1.37 2004/06/11 13:02:46 doyu Exp $
- *
- *  linux/arch/sh/entry.S
- *
+/* 
  *  Copyright (C) 1999, 2000, 2002  Niibe Yutaka
- *  Copyright (C) 2003  Paul Mundt
+ *  Copyright (C) 2003 - 2008  Paul Mundt
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -262,6 +259,7 @@ __restore_all:
 
 	.align	2
 syscall_badsys:			! Bad syscall number
+	get_current_thread_info r8, r0
 	mov	#-ENOSYS, r0
 	bra	resume_userspace
 	 mov.l	r0, @(OFF_R0,r15)	! Return value
@@ -281,7 +279,9 @@ debug_trap:
 	mov.l	1f, r8
 	add	r0, r8
 	mov.l	@r8, r8
-	jmp	@r8
+	jsr	@r8
+	 nop
+	bra	__restore_all
 	 nop
 
 	.align	2
diff --git a/arch/sh/kernel/head_32.S b/arch/sh/kernel/head_32.S
index d67d7ed09f22..ae0a382a82eb 100644
--- a/arch/sh/kernel/head_32.S
+++ b/arch/sh/kernel/head_32.S
@@ -30,8 +30,8 @@ ENTRY(empty_zero_page)
 	.long	0		/* RAMDISK_FLAGS */
 	.long	0x0200		/* ORIG_ROOT_DEV */
 	.long	1		/* LOADER_TYPE */
-	.long	0x00360000	/* INITRD_START */
-	.long	0x000a0000	/* INITRD_SIZE */
+	.long	0x00000000	/* INITRD_START */
+	.long	0x00000000	/* INITRD_SIZE */
 #ifdef CONFIG_32BIT
 	.long	0x53453f00 + 32	/* "SE?" = 32 bit */
 #else
diff --git a/arch/sh/kernel/init_task.c b/arch/sh/kernel/init_task.c
index f9bcc606127e..b151a25cb14d 100644
--- a/arch/sh/kernel/init_task.c
+++ b/arch/sh/kernel/init_task.c
@@ -8,7 +8,6 @@
 #include <asm/pgtable.h>
 
 static struct fs_struct init_fs = INIT_FS;
-static struct files_struct init_files = INIT_FILES;
 static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
 static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
 struct pt_regs fake_swapper_regs;
diff --git a/arch/sh/kernel/kgdb_stub.c b/arch/sh/kernel/kgdb_stub.c
index d453c3a1c79f..bf8ac4c71640 100644
--- a/arch/sh/kernel/kgdb_stub.c
+++ b/arch/sh/kernel/kgdb_stub.c
@@ -274,8 +274,7 @@ static char *mem_to_hex(const char *mem, char *buf, const int count)
 	}
 	for (i = 0; i < count; i++) {
 		ch = *mem++;
-		*buf++ = highhex(ch);
-		*buf++ = lowhex(ch);
+		buf = pack_hex_byte(buf, ch);
 	}
 	*buf = 0;
 	return (buf);
@@ -330,14 +329,6 @@ static char *ebin_to_mem(const char *buf, char *mem, int count)
 	return mem;
 }
 
-/* Pack a hex byte */
-static char *pack_hex_byte(char *pkt, int byte)
-{
-	*pkt++ = hexchars[(byte >> 4) & 0xf];
-	*pkt++ = hexchars[(byte & 0xf)];
-	return pkt;
-}
-
 /* Scan for the start char '$', read the packet and check the checksum */
 static void get_packet(char *buffer, int buflen)
 {
@@ -435,8 +426,8 @@ static void put_packet(char *buffer)
 
 		/* '#' Separator, put high and low components of checksum */
 		put_debug_char('#');
-		put_debug_char(highhex(checksum));
-		put_debug_char(lowhex(checksum));
+		put_debug_char(hex_asc_hi(checksum));
+		put_debug_char(hex_asc_lo(checksum));
 	}
 	while ((get_debug_char()) != '+');	/* While no ack */
 }
@@ -658,8 +649,8 @@ static void undo_single_step(void)
 static void send_signal_msg(const int signum)
 {
 	out_buffer[0] = 'S';
-	out_buffer[1] = highhex(signum);
-	out_buffer[2] = lowhex(signum);
+	out_buffer[1] = hex_asc_hi(signum);
+	out_buffer[2] = hex_asc_lo(signum);
 	out_buffer[3] = 0;
 	put_packet(out_buffer);
 }
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index 284f66f1ebbe..bca2bbc575db 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -53,6 +53,7 @@ EXPORT_SYMBOL(cpu_data);
  * sh_mv= on the command line, prior to .machvec.init teardown.
  */
 struct sh_machine_vector sh_mv = { .mv_name = "generic", };
+EXPORT_SYMBOL(sh_mv);
 
 #ifdef CONFIG_VT
 struct screen_info screen_info;
@@ -76,11 +77,18 @@ static struct resource data_resource = {
 	.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
 };
 
+static struct resource bss_resource = {
+	.name	= "Kernel bss",
+	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM,
+};
+
 unsigned long memory_start;
 EXPORT_SYMBOL(memory_start);
 unsigned long memory_end = 0;
 EXPORT_SYMBOL(memory_end);
 
+static struct resource mem_resources[MAX_NUMNODES];
+
 int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
 
 static int __init early_parse_mem(char *p)
@@ -169,6 +177,40 @@ static inline void __init reserve_crashkernel(void)
 {}
 #endif
 
+void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
+						unsigned long end_pfn)
+{
+	struct resource *res = &mem_resources[nid];
+
+	WARN_ON(res->name); /* max one active range per node for now */
+
+	res->name = "System RAM";
+	res->start = start_pfn << PAGE_SHIFT;
+	res->end = (end_pfn << PAGE_SHIFT) - 1;
+	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	if (request_resource(&iomem_resource, res)) {
+		pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
+		       start_pfn, end_pfn);
+		return;
+	}
+
+	/*
+	 *  We don't know which RAM region contains kernel data,
+	 *  so we try it repeatedly and let the resource manager
+	 *  test it.
+	 */
+	request_resource(res, &code_resource);
+	request_resource(res, &data_resource);
+	request_resource(res, &bss_resource);
+
+#ifdef CONFIG_KEXEC
+	if (crashk_res.start != crashk_res.end)
+		request_resource(res, &crashk_res);
+#endif
+
+	add_active_range(nid, start_pfn, end_pfn);
+}
+
 void __init setup_bootmem_allocator(unsigned long free_pfn)
 {
 	unsigned long bootmap_size;
@@ -181,7 +223,7 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
 	bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn,
 					 min_low_pfn, max_low_pfn);
 
-	add_active_range(0, min_low_pfn, max_low_pfn);
+	__add_active_range(0, min_low_pfn, max_low_pfn);
 	register_bootmem_low_pages();
 
 	node_set_online(0);
@@ -250,6 +292,17 @@ void __init setup_arch(char **cmdline_p)
 
 	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
 
+	printk(KERN_NOTICE "Boot params:\n"
+			   "... MOUNT_ROOT_RDONLY - %08lx\n"
+			   "... RAMDISK_FLAGS     - %08lx\n"
+			   "... ORIG_ROOT_DEV     - %08lx\n"
+			   "... LOADER_TYPE       - %08lx\n"
+			   "... INITRD_START      - %08lx\n"
+			   "... INITRD_SIZE       - %08lx\n",
+			   MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
+			   ORIG_ROOT_DEV, LOADER_TYPE,
+			   INITRD_START, INITRD_SIZE);
+
 #ifdef CONFIG_BLK_DEV_RAM
 	rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
 	rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
@@ -267,6 +320,8 @@ void __init setup_arch(char **cmdline_p)
 	code_resource.end = virt_to_phys(_etext)-1;
 	data_resource.start = virt_to_phys(_etext);
 	data_resource.end = virt_to_phys(_edata)-1;
+	bss_resource.start = virt_to_phys(__bss_start);
+	bss_resource.end = virt_to_phys(_ebss)-1;
 
 	memory_start = (unsigned long)__va(__MEMORY_START);
 	if (!memory_end)
diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c
index 6d405462cee8..8f916536719c 100644
--- a/arch/sh/kernel/sh_ksyms_32.c
+++ b/arch/sh/kernel/sh_ksyms_32.c
@@ -20,8 +20,6 @@
 extern int dump_fpu(struct pt_regs *, elf_fpregset_t *);
 extern struct hw_interrupt_type no_irq_type;
 
-EXPORT_SYMBOL(sh_mv);
-
 /* platform dependent support */
 EXPORT_SYMBOL(dump_fpu);
 EXPORT_SYMBOL(kernel_thread);
diff --git a/arch/sh/kernel/sh_ksyms_64.c b/arch/sh/kernel/sh_ksyms_64.c
index a310c9707f03..9324d32adacc 100644
--- a/arch/sh/kernel/sh_ksyms_64.c
+++ b/arch/sh/kernel/sh_ksyms_64.c
@@ -16,6 +16,7 @@
 #include <linux/in6.h>
 #include <linux/interrupt.h>
 #include <linux/screen_info.h>
+#include <asm/cacheflush.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
 #include <asm/checksum.h>
@@ -29,25 +30,50 @@ extern int dump_fpu(struct pt_regs *, elf_fpregset_t *);
 EXPORT_SYMBOL(dump_fpu);
 EXPORT_SYMBOL(kernel_thread);
 
+#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU)
+EXPORT_SYMBOL(clear_user_page);
+#endif
+
+#ifndef CONFIG_CACHE_OFF
+EXPORT_SYMBOL(flush_dcache_page);
+#endif
+
 /* Networking helper routines. */
+EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(csum_partial_copy_nocheck);
+#ifdef CONFIG_IPV6
+EXPORT_SYMBOL(csum_ipv6_magic);
+#endif
 
 #ifdef CONFIG_VT
 EXPORT_SYMBOL(screen_info);
 #endif
 
+EXPORT_SYMBOL(__put_user_asm_b);
+EXPORT_SYMBOL(__put_user_asm_w);
 EXPORT_SYMBOL(__put_user_asm_l);
+EXPORT_SYMBOL(__put_user_asm_q);
+EXPORT_SYMBOL(__get_user_asm_b);
+EXPORT_SYMBOL(__get_user_asm_w);
 EXPORT_SYMBOL(__get_user_asm_l);
+EXPORT_SYMBOL(__get_user_asm_q);
+EXPORT_SYMBOL(__strnlen_user);
+EXPORT_SYMBOL(__strncpy_from_user);
+EXPORT_SYMBOL(clear_page);
+EXPORT_SYMBOL(__clear_user);
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(__copy_user);
 EXPORT_SYMBOL(empty_zero_page);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(__udelay);
 EXPORT_SYMBOL(__ndelay);
+EXPORT_SYMBOL(__const_udelay);
 
 /* Ugh.  These come in from libgcc.a at link time. */
 #define DECLARE_EXPORT(name) extern void name(void);EXPORT_SYMBOL(name)
 
 DECLARE_EXPORT(__sdivsi3);
+DECLARE_EXPORT(__sdivsi3_2);
 DECLARE_EXPORT(__muldi3);
 DECLARE_EXPORT(__udivsi3);
+DECLARE_EXPORT(__div_table);
diff --git a/arch/sh/kernel/time_64.c b/arch/sh/kernel/time_64.c
index 898977ee2030..022a55f1c1d4 100644
--- a/arch/sh/kernel/time_64.c
+++ b/arch/sh/kernel/time_64.c
@@ -172,6 +172,7 @@ void do_gettimeofday(struct timeval *tv)
 	tv->tv_sec = sec;
 	tv->tv_usec = usec;
 }
+EXPORT_SYMBOL(do_gettimeofday);
 
 int do_settimeofday(struct timespec *tv)
 {
@@ -240,7 +241,7 @@ static inline void do_timer_interrupt(void)
 	 * the irq version of write_lock because as just said we have irq
 	 * locally disabled. -arca
 	 */
-	write_lock(&xtime_lock);
+	write_seqlock(&xtime_lock);
 	asm ("getcon cr62, %0" : "=r" (current_ctc));
 	ctc_last_interrupt = (unsigned long) current_ctc;
 
@@ -266,7 +267,7 @@ static inline void do_timer_interrupt(void)
 			/* do it again in 60 s */
 			last_rtc_update = xtime.tv_sec - 600;
 	}
-	write_unlock(&xtime_lock);
+	write_sequnlock(&xtime_lock);
 
 #ifndef CONFIG_SMP
 	update_process_times(user_mode(get_irq_regs()));
diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c
index a3bdc68ef02c..438f1ebcc453 100644
--- a/arch/sh/kernel/traps.c
+++ b/arch/sh/kernel/traps.c
@@ -4,6 +4,7 @@
 #include <linux/kdebug.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
+#include <linux/uaccess.h>
 #include <asm/system.h>
 
 #ifdef CONFIG_BUG
@@ -21,7 +22,14 @@ static void handle_BUG(struct pt_regs *regs)
 
 int is_valid_bugaddr(unsigned long addr)
 {
-	return addr >= PAGE_OFFSET;
+	unsigned short opcode;
+
+	if (addr < PAGE_OFFSET)
+		return 0;
+	if (probe_kernel_address((u16 *)addr, opcode))
+		return 0;
+
+	return opcode == TRAPA_BUG_OPCODE;
 }
 #endif