16 files changed, 257 insertions, 313 deletions

diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index e1fac57514b9..b646ff4d742a 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -14,10 +14,9 @@ obj-$(CONFIG_ARCH_EMEV2)	+= setup-emev2.o clock-emev2.o
 
 # SMP objects
 smp-y                           := platsmp.o headsmp.o
-smp-$(CONFIG_HOTPLUG_CPU)       += hotplug.o
-smp-$(CONFIG_ARCH_SH73A0)       += smp-sh73a0.o headsmp-sh73a0.o
-smp-$(CONFIG_ARCH_R8A7779)      += smp-r8a7779.o
-smp-$(CONFIG_ARCH_EMEV2)        += smp-emev2.o
+smp-$(CONFIG_ARCH_SH73A0)       += smp-sh73a0.o headsmp-scu.o
+smp-$(CONFIG_ARCH_R8A7779)      += smp-r8a7779.o headsmp-scu.o
+smp-$(CONFIG_ARCH_EMEV2)        += smp-emev2.o headsmp-scu.o
 
 # IRQ objects
 obj-$(CONFIG_ARCH_SH7372)       += entry-intc.o
diff --git a/arch/arm/mach-shmobile/clock-r8a7740.c b/arch/arm/mach-shmobile/clock-r8a7740.c
index 19ce885a3b43..1feb9a2286a8 100644
--- a/arch/arm/mach-shmobile/clock-r8a7740.c
+++ b/arch/arm/mach-shmobile/clock-r8a7740.c
@@ -593,29 +593,42 @@ static struct clk_lookup lookups[] = {
         CLKDEV_DEV_ID("sh_mobile_ceu.1",        &mstp_clks[MSTP128]),
 
         CLKDEV_DEV_ID("sh-sci.4",               &mstp_clks[MSTP200]),
+        CLKDEV_DEV_ID("e6c80000.sci",           &mstp_clks[MSTP200]),
         CLKDEV_DEV_ID("sh-sci.3",               &mstp_clks[MSTP201]),
+        CLKDEV_DEV_ID("e6c70000.sci",           &mstp_clks[MSTP201]),
         CLKDEV_DEV_ID("sh-sci.2",               &mstp_clks[MSTP202]),
+        CLKDEV_DEV_ID("e6c60000.sci",           &mstp_clks[MSTP202]),
         CLKDEV_DEV_ID("sh-sci.1",               &mstp_clks[MSTP203]),
+        CLKDEV_DEV_ID("e6c50000.sci",           &mstp_clks[MSTP203]),
         CLKDEV_DEV_ID("sh-sci.0",               &mstp_clks[MSTP204]),
+        CLKDEV_DEV_ID("e6c40000.sci",           &mstp_clks[MSTP204]),
         CLKDEV_DEV_ID("sh-sci.8",               &mstp_clks[MSTP206]),
+        CLKDEV_DEV_ID("e6c30000.sci",           &mstp_clks[MSTP206]),
         CLKDEV_DEV_ID("sh-sci.5",               &mstp_clks[MSTP207]),
+        CLKDEV_DEV_ID("e6cb0000.sci",           &mstp_clks[MSTP207]),
         CLKDEV_DEV_ID("sh-dma-engine.3",        &mstp_clks[MSTP214]),
         CLKDEV_DEV_ID("sh-dma-engine.2",        &mstp_clks[MSTP216]),
         CLKDEV_DEV_ID("sh-dma-engine.1",        &mstp_clks[MSTP217]),
         CLKDEV_DEV_ID("sh-dma-engine.0",        &mstp_clks[MSTP218]),
         CLKDEV_DEV_ID("sh-sci.7",               &mstp_clks[MSTP222]),
+        CLKDEV_DEV_ID("e6cd0000.sci",           &mstp_clks[MSTP222]),
         CLKDEV_DEV_ID("sh-sci.6",               &mstp_clks[MSTP230]),
+        CLKDEV_DEV_ID("e6cc0000.sci",           &mstp_clks[MSTP230]),
 
         CLKDEV_DEV_ID("sh_cmt.10",              &mstp_clks[MSTP329]),
         CLKDEV_DEV_ID("sh_fsi2",                &mstp_clks[MSTP328]),
         CLKDEV_DEV_ID("i2c-sh_mobile.1",        &mstp_clks[MSTP323]),
         CLKDEV_DEV_ID("renesas_usbhs",          &mstp_clks[MSTP320]),
         CLKDEV_DEV_ID("sh_mobile_sdhi.0",       &mstp_clks[MSTP314]),
+        CLKDEV_DEV_ID("e6850000.sdhi",          &mstp_clks[MSTP314]),
         CLKDEV_DEV_ID("sh_mobile_sdhi.1",       &mstp_clks[MSTP313]),
+        CLKDEV_DEV_ID("e6860000.sdhi",          &mstp_clks[MSTP313]),
         CLKDEV_DEV_ID("sh_mmcif",               &mstp_clks[MSTP312]),
+        CLKDEV_DEV_ID("e6bd0000.mmcif",         &mstp_clks[MSTP312]),
         CLKDEV_DEV_ID("sh-eth",                 &mstp_clks[MSTP309]),
 
         CLKDEV_DEV_ID("sh_mobile_sdhi.2",       &mstp_clks[MSTP415]),
+        CLKDEV_DEV_ID("e6870000.sdhi",          &mstp_clks[MSTP415]),
 
         /* ICK */
         CLKDEV_ICK_ID("host",   "renesas_usbhs",        &mstp_clks[MSTP416]),
diff --git a/arch/arm/mach-shmobile/clock-r8a7779.c b/arch/arm/mach-shmobile/clock-r8a7779.c
index 1db36537255c..d9edeaf66007 100644
--- a/arch/arm/mach-shmobile/clock-r8a7779.c
+++ b/arch/arm/mach-shmobile/clock-r8a7779.c
@@ -87,7 +87,8 @@ static struct clk div4_clks[DIV4_NR] = {
 };
 
 enum { MSTP323, MSTP322, MSTP321, MSTP320,
-        MSTP101, MSTP100,
+        MSTP115,
+        MSTP103, MSTP101, MSTP100,
         MSTP030,
         MSTP029, MSTP028, MSTP027, MSTP026, MSTP025, MSTP024, MSTP023, MSTP022, MSTP021,
         MSTP016, MSTP015, MSTP014,
@@ -99,6 +100,8 @@ static struct clk mstp_clks[MSTP_NR] = {
         [MSTP322] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 22, 0), /* SDHI1 */
         [MSTP321] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 21, 0), /* SDHI2 */
         [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 20, 0), /* SDHI3 */
+        [MSTP115] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 15, 0), /* SATA */
+        [MSTP103] = SH_CLK_MSTP32(&div4_clks[DIV4_S], MSTPCR1,  3, 0), /* DU */
         [MSTP101] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1,  1, 0), /* USB2 */
         [MSTP100] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1,  0, 0), /* USB0/1 */
         [MSTP030] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 30, 0), /* I2C0 */
@@ -156,6 +159,8 @@ static struct clk_lookup lookups[] = {
         CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
 
         /* MSTP32 clocks */
+        CLKDEV_DEV_ID("sata_rcar", &mstp_clks[MSTP115]), /* SATA */
+        CLKDEV_DEV_ID("fc600000.sata", &mstp_clks[MSTP115]), /* SATA w/DT */
         CLKDEV_DEV_ID("ehci-platform.1", &mstp_clks[MSTP101]), /* USB EHCI port2 */
         CLKDEV_DEV_ID("ohci-platform.1", &mstp_clks[MSTP101]), /* USB OHCI port2 */
         CLKDEV_DEV_ID("ehci-platform.0", &mstp_clks[MSTP100]), /* USB EHCI port0/1 */
@@ -180,6 +185,7 @@ static struct clk_lookup lookups[] = {
         CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP322]), /* SDHI1 */
         CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP321]), /* SDHI2 */
         CLKDEV_DEV_ID("sh_mobile_sdhi.3", &mstp_clks[MSTP320]), /* SDHI3 */
+        CLKDEV_DEV_ID("rcar-du.0", &mstp_clks[MSTP103]), /* DU */
 };
 
 void __init r8a7779_clock_init(void)
diff --git a/arch/arm/mach-shmobile/clock-sh73a0.c b/arch/arm/mach-shmobile/clock-sh73a0.c
index afa5423a0f93..71843dd39e16 100644
--- a/arch/arm/mach-shmobile/clock-sh73a0.c
+++ b/arch/arm/mach-shmobile/clock-sh73a0.c
@@ -265,12 +265,12 @@ enum { DIV4_I, DIV4_ZG, DIV4_M3, DIV4_B, DIV4_M1, DIV4_M2,
 
 static struct clk div4_clks[DIV4_NR] = {
         [DIV4_I] = DIV4(FRQCRA, 20, 0xdff, CLK_ENABLE_ON_INIT),
-        [DIV4_ZG] = DIV4(FRQCRA, 16, 0xd7f, CLK_ENABLE_ON_INIT),
+        [DIV4_ZG] = SH_CLK_DIV4(&pll0_clk, FRQCRA, 16, 0xd7f, CLK_ENABLE_ON_INIT),
         [DIV4_M3] = DIV4(FRQCRA, 12, 0x1dff, CLK_ENABLE_ON_INIT),
         [DIV4_B] = DIV4(FRQCRA, 8, 0xdff, CLK_ENABLE_ON_INIT),
         [DIV4_M1] = DIV4(FRQCRA, 4, 0x1dff, 0),
         [DIV4_M2] = DIV4(FRQCRA, 0, 0x1dff, 0),
-        [DIV4_Z] = DIV4(FRQCRB, 24, 0x97f, 0),
+        [DIV4_Z] = SH_CLK_DIV4(&pll0_clk, FRQCRB, 24, 0x97f, 0),
         [DIV4_ZTR] = DIV4(FRQCRB, 20, 0xdff, 0),
         [DIV4_ZT] = DIV4(FRQCRB, 16, 0xdff, 0),
         [DIV4_ZX] = DIV4(FRQCRB, 12, 0xdff, 0),
@@ -581,10 +581,13 @@ static struct clk_lookup lookups[] = {
         CLKDEV_DEV_ID("e6822000.i2c", &mstp_clks[MSTP323]), /* I2C1 */
         CLKDEV_DEV_ID("renesas_usbhs", &mstp_clks[MSTP322]), /* USB */
         CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
+        CLKDEV_DEV_ID("ee100000.sdhi", &mstp_clks[MSTP314]), /* SDHI0 */
         CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
+        CLKDEV_DEV_ID("ee120000.sdhi", &mstp_clks[MSTP313]), /* SDHI1 */
         CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMCIF0 */
         CLKDEV_DEV_ID("e6bd0000.mmcif", &mstp_clks[MSTP312]), /* MMCIF0 */
         CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP311]), /* SDHI2 */
+        CLKDEV_DEV_ID("ee140000.sdhi", &mstp_clks[MSTP311]), /* SDHI2 */
         CLKDEV_DEV_ID("leds-renesas-tpu.12", &mstp_clks[MSTP303]), /* TPU1 */
         CLKDEV_DEV_ID("leds-renesas-tpu.21", &mstp_clks[MSTP302]), /* TPU2 */
         CLKDEV_DEV_ID("leds-renesas-tpu.30", &mstp_clks[MSTP301]), /* TPU3 */
diff --git a/arch/arm/mach-shmobile/headsmp-sh73a0.S b/arch/arm/mach-shmobile/headsmp-scu.S
index bec4c0d9b713..7d113f898e7f 100644
--- a/arch/arm/mach-shmobile/headsmp-sh73a0.S
+++ b/arch/arm/mach-shmobile/headsmp-scu.S
@@ -1,5 +1,5 @@
 /*
- * SMP support for SoC sh73a0
+ * Shared SCU setup for mach-shmobile
  *
  * Copyright (C) 2012 Bastian Hecht
  *
@@ -35,11 +35,12 @@
  * the physical address as the MMU is still turned off.
  */
         .align  12
-ENTRY(sh73a0_secondary_vector)
+ENTRY(shmobile_secondary_vector_scu)
         mrc     p15, 0, r0, c0, c0, 5   @ read MIPDR
         and     r0, r0, #3              @ mask out cpu ID
         lsl     r0, r0, #3              @ we will shift by cpu_id * 8 bits
-        mov     r1, #0xf0000000         @ SCU base address
+        ldr     r1, 2f
+        ldr     r1, [r1]                @ SCU base address
         ldr     r2, [r1, #8]            @ SCU Power Status Register
         mov     r3, #3
         bic     r2, r2, r3, lsl r0      @ Clear bits of our CPU (Run Mode)
@@ -47,4 +48,10 @@ ENTRY(sh73a0_secondary_vector)
 
         ldr     pc, 1f
 1:      .long shmobile_invalidate_start - PAGE_OFFSET + PLAT_PHYS_OFFSET
-ENDPROC(sh73a0_secondary_vector)
+2:      .long shmobile_scu_base - PAGE_OFFSET + PLAT_PHYS_OFFSET
+ENDPROC(shmobile_secondary_vector_scu)
+
+        .text
+        .globl  shmobile_scu_base
+shmobile_scu_base:
+        .space  4
diff --git a/arch/arm/mach-shmobile/hotplug.c b/arch/arm/mach-shmobile/hotplug.c
deleted file mode 100644
index a1524e3367b0..000000000000
--- a/arch/arm/mach-shmobile/hotplug.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * SMP support for R-Mobile / SH-Mobile
- *
- * Copyright (C) 2010  Magnus Damm
- *
- * Based on realview, Copyright (C) 2002 ARM Ltd, All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-#include <linux/cpumask.h>
-#include <linux/delay.h>
-#include <linux/of.h>
-#include <mach/common.h>
-#include <mach/r8a7779.h>
-#include <mach/emev2.h>
-#include <asm/cacheflush.h>
-#include <asm/mach-types.h>
-
-static cpumask_t dead_cpus;
-
-void shmobile_cpu_die(unsigned int cpu)
-{
-        /* hardware shutdown code running on the CPU that is being offlined */
-        flush_cache_all();
-        dsb();
-
-        /* notify platform_cpu_kill() that hardware shutdown is finished */
-        cpumask_set_cpu(cpu, &dead_cpus);
-
-        /* wait for SoC code in platform_cpu_kill() to shut off CPU core
-         * power. CPU bring up starts from the reset vector.
-         */
-        while (1) {
-                /*
-                 * here's the WFI
-                 */
-                asm(".word      0xe320f003\n"
-                    :
-                    :
-                    : "memory", "cc");
-        }
-}
-
-int shmobile_cpu_disable(unsigned int cpu)
-{
-        cpumask_clear_cpu(cpu, &dead_cpus);
-        /*
-         * we don't allow CPU 0 to be shutdown (it is still too special
-         * e.g. clock tick interrupts)
-         */
-        return cpu == 0 ? -EPERM : 0;
-}
-
-int shmobile_cpu_disable_any(unsigned int cpu)
-{
-        cpumask_clear_cpu(cpu, &dead_cpus);
-        return 0;
-}
-
-int shmobile_cpu_is_dead(unsigned int cpu)
-{
-        return cpumask_test_cpu(cpu, &dead_cpus);
-}
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 362f9b2d2c02..62c04c252418 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -8,6 +8,7 @@ extern void shmobile_setup_delay(unsigned int max_cpu_core_mhz,
 struct twd_local_timer;
 extern void shmobile_setup_console(void);
 extern void shmobile_secondary_vector(void);
+extern void shmobile_secondary_vector_scu(void);
 struct clk;
 extern int shmobile_clk_init(void);
 extern void shmobile_handle_irq_intc(struct pt_regs *);
@@ -30,23 +31,23 @@ extern int sh7372_do_idle_sysc(unsigned long sleep_mode);
 extern struct clk sh7372_extal1_clk;
 extern struct clk sh7372_extal2_clk;
 
+extern void sh73a0_init_delay(void);
 extern void sh73a0_init_irq(void);
 extern void sh73a0_init_irq_dt(void);
 extern void sh73a0_map_io(void);
 extern void sh73a0_earlytimer_init(void);
 extern void sh73a0_add_early_devices(void);
-extern void sh73a0_add_early_devices_dt(void);
 extern void sh73a0_add_standard_devices(void);
 extern void sh73a0_add_standard_devices_dt(void);
 extern void sh73a0_clock_init(void);
 extern void sh73a0_pinmux_init(void);
 extern void sh73a0_pm_init(void);
-extern void sh73a0_secondary_vector(void);
 extern struct clk sh73a0_extal1_clk;
 extern struct clk sh73a0_extal2_clk;
 extern struct clk sh73a0_extcki_clk;
 extern struct clk sh73a0_extalr_clk;
 
+extern void r8a7740_meram_workaround(void);
 extern void r8a7740_init_irq(void);
 extern void r8a7740_map_io(void);
 extern void r8a7740_add_early_devices(void);
@@ -55,16 +56,17 @@ extern void r8a7740_clock_init(u8 md_ck);
 extern void r8a7740_pinmux_init(void);
 extern void r8a7740_pm_init(void);
 
+extern void r8a7779_init_delay(void);
 extern void r8a7779_init_irq(void);
+extern void r8a7779_init_irq_dt(void);
 extern void r8a7779_map_io(void);
 extern void r8a7779_earlytimer_init(void);
 extern void r8a7779_add_early_devices(void);
 extern void r8a7779_add_standard_devices(void);
+extern void r8a7779_add_standard_devices_dt(void);
 extern void r8a7779_clock_init(void);
 extern void r8a7779_pinmux_init(void);
 extern void r8a7779_pm_init(void);
-extern void r8a7740_meram_workaround(void);
-
 extern void r8a7779_register_twd(void);
 
 #ifdef CONFIG_SUSPEND
@@ -79,16 +81,7 @@ int shmobile_cpuidle_init(void);
 static inline int shmobile_cpuidle_init(void) { return 0; }
 #endif
 
-extern void shmobile_cpu_die(unsigned int cpu);
-extern int shmobile_cpu_disable(unsigned int cpu);
-extern int shmobile_cpu_disable_any(unsigned int cpu);
-
-#ifdef CONFIG_HOTPLUG_CPU
-extern int shmobile_cpu_is_dead(unsigned int cpu);
-#else
-static inline int shmobile_cpu_is_dead(unsigned int cpu) { return 1; }
-#endif
-
+extern void __iomem *shmobile_scu_base;
 extern void shmobile_smp_init_cpus(unsigned int ncores);
 
 static inline void __init shmobile_init_late(void)
diff --git a/arch/arm/mach-shmobile/include/mach/irqs.h b/arch/arm/mach-shmobile/include/mach/irqs.h
index 06a5da3c3050..992ed213cec1 100644
--- a/arch/arm/mach-shmobile/include/mach/irqs.h
+++ b/arch/arm/mach-shmobile/include/mach/irqs.h
@@ -5,6 +5,7 @@
 
 /* GIC */
 #define gic_spi(nr)             ((nr) + 32)
+#define gic_iid(nr)             (nr) /* ICCIAR / interrupt ID */
 
 /* INTCS */
 #define INTCS_VECT_BASE         0x3400
diff --git a/arch/arm/mach-shmobile/intc-r8a7779.c b/arch/arm/mach-shmobile/intc-r8a7779.c
index 8807c27f71f9..f9cc4bc9c798 100644
--- a/arch/arm/mach-shmobile/intc-r8a7779.c
+++ b/arch/arm/mach-shmobile/intc-r8a7779.c
@@ -24,6 +24,7 @@
 #include <linux/io.h>
 #include <linux/irqchip/arm-gic.h>
 #include <mach/common.h>
+#include <linux/irqchip.h>
 #include <mach/intc.h>
 #include <mach/r8a7779.h>
 #include <asm/mach-types.h>
@@ -43,13 +44,8 @@ static int r8a7779_set_wake(struct irq_data *data, unsigned int on)
         return 0; /* always allow wakeup */
 }
 
-void __init r8a7779_init_irq(void)
+static void __init r8a7779_init_irq_common(void)
 {
-        void __iomem *gic_dist_base = IOMEM(0xf0001000);
-        void __iomem *gic_cpu_base = IOMEM(0xf0000100);
-
-        /* use GIC to handle interrupts */
-        gic_init(0, 29, gic_dist_base, gic_cpu_base);
         gic_arch_extn.irq_set_wake = r8a7779_set_wake;
 
         /* route all interrupts to ARM */
@@ -63,3 +59,22 @@ void __init r8a7779_init_irq(void)
         __raw_writel(0xbffffffc, INT2SMSKCR3);
         __raw_writel(0x003fee3f, INT2SMSKCR4);
 }
+
+void __init r8a7779_init_irq(void)
+{
+        void __iomem *gic_dist_base = IOMEM(0xf0001000);
+        void __iomem *gic_cpu_base = IOMEM(0xf0000100);
+
+        /* use GIC to handle interrupts */
+        gic_init(0, 29, gic_dist_base, gic_cpu_base);
+
+        r8a7779_init_irq_common();
+}
+
+#ifdef CONFIG_OF
+void __init r8a7779_init_irq_dt(void)
+{
+        irqchip_init();
+        r8a7779_init_irq_common();
+}
+#endif
diff --git a/arch/arm/mach-shmobile/intc-sh73a0.c b/arch/arm/mach-shmobile/intc-sh73a0.c
index 91faba666d46..a81a1d804e2e 100644
--- a/arch/arm/mach-shmobile/intc-sh73a0.c
+++ b/arch/arm/mach-shmobile/intc-sh73a0.c
@@ -460,11 +460,3 @@ void __init sh73a0_init_irq(void)
         sh73a0_pint1_cascade.handler = sh73a0_pint1_demux;
         setup_irq(gic_spi(34), &sh73a0_pint1_cascade);
 }
-
-#ifdef CONFIG_OF
-void __init sh73a0_init_irq_dt(void)
-{
-        irqchip_init();
-        gic_arch_extn.irq_set_wake = sh73a0_set_wake;
-}
-#endif
diff --git a/arch/arm/mach-shmobile/setup-emev2.c b/arch/arm/mach-shmobile/setup-emev2.c
index 47662a581c0a..e4545c152722 100644
--- a/arch/arm/mach-shmobile/setup-emev2.c
+++ b/arch/arm/mach-shmobile/setup-emev2.c
@@ -404,7 +404,7 @@ void __init emev2_add_standard_devices(void)
                              ARRAY_SIZE(emev2_late_devices));
 }
 
-void __init emev2_init_delay(void)
+static void __init emev2_init_delay(void)
 {
         shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
 }
@@ -439,7 +439,7 @@ static const struct of_dev_auxdata emev2_auxdata_lookup[] __initconst = {
         { }
 };
 
-void __init emev2_add_standard_devices_dt(void)
+static void __init emev2_add_standard_devices_dt(void)
 {
         of_platform_populate(NULL, of_default_bus_match_table,
                              emev2_auxdata_lookup, NULL);
diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c
index c54ff9b29fe5..042df35e71a0 100644
--- a/arch/arm/mach-shmobile/setup-r8a7779.c
+++ b/arch/arm/mach-shmobile/setup-r8a7779.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/input.h>
@@ -28,6 +29,7 @@
 #include <linux/serial_sci.h>
 #include <linux/sh_intc.h>
 #include <linux/sh_timer.h>
+#include <linux/dma-mapping.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 #include <mach/r8a7779.h>
@@ -91,7 +93,7 @@ static struct plat_sci_port scif0_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(88)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x78)),
 };
 
 static struct platform_device scif0_device = {
@@ -108,7 +110,7 @@ static struct plat_sci_port scif1_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(89)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x79)),
 };
 
 static struct platform_device scif1_device = {
@@ -125,7 +127,7 @@ static struct plat_sci_port scif2_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(90)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x7a)),
 };
 
 static struct platform_device scif2_device = {
@@ -142,7 +144,7 @@ static struct plat_sci_port scif3_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(91)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x7b)),
 };
 
 static struct platform_device scif3_device = {
@@ -159,7 +161,7 @@ static struct plat_sci_port scif4_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(92)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x7c)),
 };
 
 static struct platform_device scif4_device = {
@@ -176,7 +178,7 @@ static struct plat_sci_port scif5_platform_data = {
         .scscr          = SCSCR_RE | SCSCR_TE | SCSCR_CKE1,
         .scbrr_algo_id  = SCBRR_ALGO_2,
         .type           = PORT_SCIF,
-        .irqs           = SCIx_IRQ_MUXED(gic_spi(93)),
+        .irqs           = SCIx_IRQ_MUXED(gic_iid(0x7d)),
 };
 
 static struct platform_device scif5_device = {
@@ -203,7 +205,7 @@ static struct resource tmu00_resources[] = {
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
-                .start  = gic_spi(32),
+                .start  = gic_iid(0x40),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -233,7 +235,7 @@ static struct resource tmu01_resources[] = {
                 .flags  = IORESOURCE_MEM,
         },
         [1] = {
-                .start  = gic_spi(33),
+                .start  = gic_iid(0x41),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -255,7 +257,7 @@ static struct resource rcar_i2c0_res[] = {
                 .end    = 0xffc70fff,
                 .flags  = IORESOURCE_MEM,
         }, {
-                .start  = gic_spi(79),
+                .start  = gic_iid(0x6f),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -273,7 +275,7 @@ static struct resource rcar_i2c1_res[] = {
                 .end    = 0xffc71fff,
                 .flags  = IORESOURCE_MEM,
         }, {
-                .start  = gic_spi(82),
+                .start  = gic_iid(0x72),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -291,7 +293,7 @@ static struct resource rcar_i2c2_res[] = {
                 .end    = 0xffc72fff,
                 .flags  = IORESOURCE_MEM,
         }, {
-                .start  = gic_spi(80),
+                .start  = gic_iid(0x70),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -309,7 +311,7 @@ static struct resource rcar_i2c3_res[] = {
                 .end    = 0xffc73fff,
                 .flags  = IORESOURCE_MEM,
         }, {
-                .start  = gic_spi(81),
+                .start  = gic_iid(0x71),
                 .flags  = IORESOURCE_IRQ,
         },
 };
@@ -321,7 +323,31 @@ static struct platform_device i2c3_device = {
         .num_resources  = ARRAY_SIZE(rcar_i2c3_res),
 };
 
-static struct platform_device *r8a7779_early_devices[] __initdata = {
+static struct resource sata_resources[] = {
+        [0] = {
+                .name   = "rcar-sata",
+                .start  = 0xfc600000,
+                .end    = 0xfc601fff,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = gic_iid(0x84),
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device sata_device = {
+        .name           = "sata_rcar",
+        .id             = -1,
+        .resource       = sata_resources,
+        .num_resources  = ARRAY_SIZE(sata_resources),
+        .dev            = {
+                .dma_mask               = &sata_device.dev.coherent_dma_mask,
+                .coherent_dma_mask      = DMA_BIT_MASK(32),
+        },
+};
+
+static struct platform_device *r8a7779_devices_dt[] __initdata = {
         &scif0_device,
         &scif1_device,
         &scif2_device,
@@ -330,13 +356,14 @@ static struct platform_device *r8a7779_early_devices[] __initdata = {
         &scif5_device,
         &tmu00_device,
         &tmu01_device,
+};
+
+static struct platform_device *r8a7779_late_devices[] __initdata = {
         &i2c0_device,
         &i2c1_device,
         &i2c2_device,
         &i2c3_device,
-};
-
-static struct platform_device *r8a7779_late_devices[] __initdata = {
+        &sata_device,
 };
 
 void __init r8a7779_add_standard_devices(void)
@@ -349,8 +376,8 @@ void __init r8a7779_add_standard_devices(void)
 
         r8a7779_init_pm_domains();
 
-        platform_add_devices(r8a7779_early_devices,
-                            ARRAY_SIZE(r8a7779_early_devices));
+        platform_add_devices(r8a7779_devices_dt,
+                            ARRAY_SIZE(r8a7779_devices_dt));
         platform_add_devices(r8a7779_late_devices,
                             ARRAY_SIZE(r8a7779_late_devices));
 }
@@ -367,8 +394,8 @@ void __init r8a7779_earlytimer_init(void)
 
 void __init r8a7779_add_early_devices(void)
 {
-        early_platform_add_devices(r8a7779_early_devices,
-                                   ARRAY_SIZE(r8a7779_early_devices));
+        early_platform_add_devices(r8a7779_devices_dt,
+                                   ARRAY_SIZE(r8a7779_devices_dt));
 
         /* Early serial console setup is not included here due to
          * memory map collisions. The SCIF serial ports in r8a7779
@@ -386,3 +413,40 @@ void __init r8a7779_add_early_devices(void)
          * command line in case of the marzen board.
          */
 }
+
+#ifdef CONFIG_USE_OF
+void __init r8a7779_init_delay(void)
+{
+        shmobile_setup_delay(1000, 2, 4); /* Cortex-A9 @ 1000MHz */
+}
+
+static const struct of_dev_auxdata r8a7779_auxdata_lookup[] __initconst = {
+        {},
+};
+
+void __init r8a7779_add_standard_devices_dt(void)
+{
+        /* clocks are setup late during boot in the case of DT */
+        r8a7779_clock_init();
+
+        platform_add_devices(r8a7779_devices_dt,
+                             ARRAY_SIZE(r8a7779_devices_dt));
+        of_platform_populate(NULL, of_default_bus_match_table,
+                             r8a7779_auxdata_lookup, NULL);
+}
+
+static const char *r8a7779_compat_dt[] __initdata = {
+        "renesas,r8a7779",
+        NULL,
+};
+
+DT_MACHINE_START(R8A7779_DT, "Generic R8A7779 (Flattened Device Tree)")
+        .map_io         = r8a7779_map_io,
+        .init_early     = r8a7779_init_delay,
+        .nr_irqs        = NR_IRQS_LEGACY,
+        .init_irq       = r8a7779_init_irq_dt,
+        .init_machine   = r8a7779_add_standard_devices_dt,
+        .init_time      = shmobile_timer_init,
+        .dt_compat      = r8a7779_compat_dt,
+MACHINE_END
+#endif /* CONFIG_USE_OF */
diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c
index bdab575f88bc..2257a915746d 100644
--- a/arch/arm/mach-shmobile/setup-sh73a0.c
+++ b/arch/arm/mach-shmobile/setup-sh73a0.c
@@ -22,6 +22,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqchip.h>
 #include <linux/platform_device.h>
 #include <linux/of_platform.h>
 #include <linux/delay.h>
@@ -810,7 +811,7 @@ static struct platform_device ipmmu_device = {
         .num_resources  = ARRAY_SIZE(ipmmu_resources),
 };
 
-static struct platform_device *sh73a0_early_devices_dt[] __initdata = {
+static struct platform_device *sh73a0_devices_dt[] __initdata = {
         &scif0_device,
         &scif1_device,
         &scif2_device,
@@ -847,8 +848,8 @@ void __init sh73a0_add_standard_devices(void)
         /* Clear software reset bit on SY-DMAC module */
         __raw_writel(__raw_readl(SRCR2) & ~(1 << 18), SRCR2);
 
-        platform_add_devices(sh73a0_early_devices_dt,
-                            ARRAY_SIZE(sh73a0_early_devices_dt));
+        platform_add_devices(sh73a0_devices_dt,
+                            ARRAY_SIZE(sh73a0_devices_dt));
         platform_add_devices(sh73a0_early_devices,
                             ARRAY_SIZE(sh73a0_early_devices));
         platform_add_devices(sh73a0_late_devices,
@@ -867,8 +868,8 @@ void __init sh73a0_earlytimer_init(void)
 
 void __init sh73a0_add_early_devices(void)
 {
-        early_platform_add_devices(sh73a0_early_devices_dt,
-                                   ARRAY_SIZE(sh73a0_early_devices_dt));
+        early_platform_add_devices(sh73a0_devices_dt,
+                                   ARRAY_SIZE(sh73a0_devices_dt));
         early_platform_add_devices(sh73a0_early_devices,
                                    ARRAY_SIZE(sh73a0_early_devices));
 
@@ -878,23 +879,9 @@ void __init sh73a0_add_early_devices(void)
 
 #ifdef CONFIG_USE_OF
 
-/* Please note that the clock initialisation shcheme used in
- * sh73a0_add_early_devices_dt() and sh73a0_add_standard_devices_dt()
- * does not work with SMP as there is a yet to be resolved lock-up in
- * workqueue initialisation.
- *
- * CONFIG_SMP should be disabled when using this code.
- */
-
-void __init sh73a0_add_early_devices_dt(void)
+void __init sh73a0_init_delay(void)
 {
         shmobile_setup_delay(1196, 44, 46); /* Cortex-A9 @ 1196MHz */
-
-        early_platform_add_devices(sh73a0_early_devices_dt,
-                                   ARRAY_SIZE(sh73a0_early_devices_dt));
-
-        /* setup early console here as well */
-        shmobile_setup_console();
 }
 
 static const struct of_dev_auxdata sh73a0_auxdata_lookup[] __initconst = {
@@ -906,8 +893,8 @@ void __init sh73a0_add_standard_devices_dt(void)
         /* clocks are setup late during boot in the case of DT */
         sh73a0_clock_init();
 
-        platform_add_devices(sh73a0_early_devices_dt,
-                             ARRAY_SIZE(sh73a0_early_devices_dt));
+        platform_add_devices(sh73a0_devices_dt,
+                             ARRAY_SIZE(sh73a0_devices_dt));
         of_platform_populate(NULL, of_default_bus_match_table,
                              sh73a0_auxdata_lookup, NULL);
 }
@@ -918,10 +905,11 @@ static const char *sh73a0_boards_compat_dt[] __initdata = {
 };
 
 DT_MACHINE_START(SH73A0_DT, "Generic SH73A0 (Flattened Device Tree)")
+        .smp            = smp_ops(sh73a0_smp_ops),
         .map_io         = sh73a0_map_io,
-        .init_early     = sh73a0_add_early_devices_dt,
+        .init_early     = sh73a0_init_delay,
         .nr_irqs        = NR_IRQS_LEGACY,
-        .init_irq       = sh73a0_init_irq_dt,
+        .init_irq       = irqchip_init,
         .init_machine   = sh73a0_add_standard_devices_dt,
         .init_time      = shmobile_timer_init,
         .dt_compat      = sh73a0_boards_compat_dt,
diff --git a/arch/arm/mach-shmobile/smp-emev2.c b/arch/arm/mach-shmobile/smp-emev2.c
index 384e27dd3601..e38691b4d0dd 100644
--- a/arch/arm/mach-shmobile/smp-emev2.c
+++ b/arch/arm/mach-shmobile/smp-emev2.c
@@ -27,90 +27,35 @@
 #include <mach/emev2.h>
 #include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
-#include <asm/cacheflush.h>
 
 #define EMEV2_SCU_BASE 0x1e000000
 
-static DEFINE_SPINLOCK(scu_lock);
-static void __iomem *scu_base;
-
-static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
-{
-        unsigned long tmp;
-
-        /* we assume this code is running on a different cpu
-         * than the one that is changing coherency setting */
-        spin_lock(&scu_lock);
-        tmp = readl(scu_base + 8);
-        tmp &= ~clr;
-        tmp |= set;
-        writel(tmp, scu_base + 8);
-        spin_unlock(&scu_lock);
-
-}
-
-static unsigned int __init emev2_get_core_count(void)
-{
-        if (!scu_base) {
-                scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
-                emev2_clock_init(); /* need ioremapped SMU */
-        }
-
-        WARN_ON_ONCE(!scu_base);
-
-        return scu_base ? scu_get_core_count(scu_base) : 1;
-}
-
-static int emev2_platform_cpu_kill(unsigned int cpu)
-{
-        return 0; /* not supported yet */
-}
-
-static int __maybe_unused emev2_cpu_kill(unsigned int cpu)
-{
-        int k;
-
-        /* this function is running on another CPU than the offline target,
-         * here we need wait for shutdown code in platform_cpu_die() to
-         * finish before asking SoC-specific code to power off the CPU core.
-         */
-        for (k = 0; k < 1000; k++) {
-                if (shmobile_cpu_is_dead(cpu))
-                        return emev2_platform_cpu_kill(cpu);
-                mdelay(1);
-        }
-
-        return 0;
-}
-
-
 static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
-        cpu = cpu_logical_map(cpu);
-
-        /* enable cache coherency */
-        modify_scu_cpu_psr(0, 3 << (cpu * 8));
-
-        /* Tell ROM loader about our vector (in headsmp.S) */
-        emev2_set_boot_vector(__pa(shmobile_secondary_vector));
-
-        arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+        arch_send_wakeup_ipi_mask(cpumask_of(cpu_logical_map(cpu)));
         return 0;
 }
 
 static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
 {
-        int cpu = cpu_logical_map(0);
+        scu_enable(shmobile_scu_base);
 
-        scu_enable(scu_base);
+        /* Tell ROM loader about our vector (in headsmp-scu.S) */
+        emev2_set_boot_vector(__pa(shmobile_secondary_vector_scu));
 
-        /* enable cache coherency on CPU0 */
-        modify_scu_cpu_psr(0, 3 << (cpu * 8));
+        /* enable cache coherency on booting CPU */
+        scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
 }
 
 static void __init emev2_smp_init_cpus(void)
 {
-        unsigned int ncores = emev2_get_core_count();
+        unsigned int ncores;
+
+        /* setup EMEV2 specific SCU base */
+        shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
+        emev2_clock_init(); /* need ioremapped SMU */
+
+        ncores = shmobile_scu_base ? scu_get_core_count(shmobile_scu_base) : 1;
 
         shmobile_smp_init_cpus(ncores);
 }
@@ -119,9 +64,4 @@ struct smp_operations emev2_smp_ops __initdata = {
         .smp_init_cpus          = emev2_smp_init_cpus,
         .smp_prepare_cpus       = emev2_smp_prepare_cpus,
         .smp_boot_secondary     = emev2_boot_secondary,
-#ifdef CONFIG_HOTPLUG_CPU
-        .cpu_kill               = emev2_cpu_kill,
-        .cpu_die                = shmobile_cpu_die,
-        .cpu_disable            = shmobile_cpu_disable,
-#endif
 };
diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c
index 994906560edd..a853bf182ed5 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -25,11 +25,13 @@
 #include <linux/delay.h>
 #include <mach/common.h>
 #include <mach/r8a7779.h>
+#include <asm/cacheflush.h>
 #include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
 #include <asm/smp_twd.h>
 
 #define AVECR IOMEM(0xfe700040)
+#define R8A7779_SCU_BASE 0xf0000000
 
 static struct r8a7779_pm_ch r8a7779_ch_cpu1 = {
         .chan_offs = 0x40, /* PWRSR0 .. PWRER0 */
@@ -55,44 +57,14 @@ static struct r8a7779_pm_ch *r8a7779_ch_cpu[4] = {
         [3] = &r8a7779_ch_cpu3,
 };
 
-static void __iomem *scu_base_addr(void)
-{
-        return (void __iomem *)0xf0000000;
-}
-
-static DEFINE_SPINLOCK(scu_lock);
-static unsigned long tmp;
-
 #ifdef CONFIG_HAVE_ARM_TWD
-static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
-
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, R8A7779_SCU_BASE + 0x600, 29);
 void __init r8a7779_register_twd(void)
 {
         twd_local_timer_register(&twd_local_timer);
 }
 #endif
 
-static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
-{
-        void __iomem *scu_base = scu_base_addr();
-
-        spin_lock(&scu_lock);
-        tmp = __raw_readl(scu_base + 8);
-        tmp &= ~clr;
-        tmp |= set;
-        spin_unlock(&scu_lock);
-
-        /* disable cache coherency after releasing the lock */
-        __raw_writel(tmp, scu_base + 8);
-}
-
-static unsigned int __init r8a7779_get_core_count(void)
-{
-        void __iomem *scu_base = scu_base_addr();
-
-        return scu_get_core_count(scu_base);
-}
-
 static int r8a7779_platform_cpu_kill(unsigned int cpu)
 {
         struct r8a7779_pm_ch *ch = NULL;
@@ -100,9 +72,6 @@ static int r8a7779_platform_cpu_kill(unsigned int cpu)
 
         cpu = cpu_logical_map(cpu);
 
-        /* disable cache coherency */
-        modify_scu_cpu_psr(3 << (cpu * 8), 0);
-
         if (cpu < ARRAY_SIZE(r8a7779_ch_cpu))
                 ch = r8a7779_ch_cpu[cpu];
 
@@ -112,25 +81,6 @@ static int r8a7779_platform_cpu_kill(unsigned int cpu)
         return ret ? ret : 1;
 }
 
-static int __maybe_unused r8a7779_cpu_kill(unsigned int cpu)
-{
-        int k;
-
-        /* this function is running on another CPU than the offline target,
-         * here we need wait for shutdown code in platform_cpu_die() to
-         * finish before asking SoC-specific code to power off the CPU core.
-         */
-        for (k = 0; k < 1000; k++) {
-                if (shmobile_cpu_is_dead(cpu))
-                        return r8a7779_platform_cpu_kill(cpu);
-
-                mdelay(1);
-        }
-
-        return 0;
-}
-
-
 static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
         struct r8a7779_pm_ch *ch = NULL;
@@ -138,9 +88,6 @@ static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct
 
         cpu = cpu_logical_map(cpu);
 
-        /* enable cache coherency */
-        modify_scu_cpu_psr(0, 3 << (cpu * 8));
-
         if (cpu < ARRAY_SIZE(r8a7779_ch_cpu))
                 ch = r8a7779_ch_cpu[cpu];
 
@@ -152,15 +99,13 @@ static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct
 
 static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
 {
-        int cpu = cpu_logical_map(0);
+        scu_enable(shmobile_scu_base);
 
-        scu_enable(scu_base_addr());
+        /* Map the reset vector (in headsmp-scu.S) */
+        __raw_writel(__pa(shmobile_secondary_vector_scu), AVECR);
 
-        /* Map the reset vector (in headsmp.S) */
-        __raw_writel(__pa(shmobile_secondary_vector), AVECR);
-
-        /* enable cache coherency on CPU0 */
-        modify_scu_cpu_psr(0, 3 << (cpu * 8));
+        /* enable cache coherency on booting CPU */
+        scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
 
         r8a7779_pm_init();
 
@@ -172,10 +117,60 @@ static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
 
 static void __init r8a7779_smp_init_cpus(void)
 {
-        unsigned int ncores = r8a7779_get_core_count();
+        /* setup r8a7779 specific SCU base */
+        shmobile_scu_base = IOMEM(R8A7779_SCU_BASE);
+
+        shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base));
+}
 
-        shmobile_smp_init_cpus(ncores);
+#ifdef CONFIG_HOTPLUG_CPU
+static int r8a7779_scu_psr_core_disabled(int cpu)
+{
+        unsigned long mask = 3 << (cpu * 8);
+
+        if ((__raw_readl(shmobile_scu_base + 8) & mask) == mask)
+                return 1;
+
+        return 0;
+}
+
+static int r8a7779_cpu_kill(unsigned int cpu)
+{
+        int k;
+
+        /* this function is running on another CPU than the offline target,
+         * here we need wait for shutdown code in platform_cpu_die() to
+         * finish before asking SoC-specific code to power off the CPU core.
+         */
+        for (k = 0; k < 1000; k++) {
+                if (r8a7779_scu_psr_core_disabled(cpu))
+                        return r8a7779_platform_cpu_kill(cpu);
+
+                mdelay(1);
+        }
+
+        return 0;
+}
+
+static void r8a7779_cpu_die(unsigned int cpu)
+{
+        dsb();
+        flush_cache_all();
+
+        /* disable cache coherency */
+        scu_power_mode(shmobile_scu_base, SCU_PM_POWEROFF);
+
+        /* Endless loop until power off from r8a7779_cpu_kill() */
+        while (1)
+                cpu_do_idle();
+}
+
+static int r8a7779_cpu_disable(unsigned int cpu)
+{
+        /* only CPU1->3 have power domains, do not allow hotplug of CPU0 */
+        return cpu == 0 ? -EPERM : 0;
 }
+#endif /* CONFIG_HOTPLUG_CPU */
 
 struct smp_operations r8a7779_smp_ops  __initdata = {
         .smp_init_cpus          = r8a7779_smp_init_cpus,
@@ -183,7 +178,7 @@ struct smp_operations r8a7779_smp_ops  __initdata = {
         .smp_boot_secondary     = r8a7779_boot_secondary,
 #ifdef CONFIG_HOTPLUG_CPU
         .cpu_kill               = r8a7779_cpu_kill,
-        .cpu_die                = shmobile_cpu_die,
-        .cpu_disable            = shmobile_cpu_disable,
+        .cpu_die                = r8a7779_cpu_die,
+        .cpu_disable            = r8a7779_cpu_disable,
 #endif
 };
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index d0f9aca22477..bf79626ee5a4 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -38,26 +38,16 @@
 
 #define PSTR_SHUTDOWN_MODE      3
 
-static void __iomem *scu_base_addr(void)
-{
-        return (void __iomem *)0xf0000000;
-}
+#define SH73A0_SCU_BASE 0xf0000000
 
 #ifdef CONFIG_HAVE_ARM_TWD
-static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29);
+static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, SH73A0_SCU_BASE + 0x600, 29);
 void __init sh73a0_register_twd(void)
 {
         twd_local_timer_register(&twd_local_timer);
 }
 #endif
 
-static unsigned int __init sh73a0_get_core_count(void)
-{
-        void __iomem *scu_base = scu_base_addr();
-
-        return scu_get_core_count(scu_base);
-}
-
 static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
         cpu = cpu_logical_map(cpu);
@@ -72,21 +62,22 @@ static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct
 
 static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
 {
-        scu_enable(scu_base_addr());
+        scu_enable(shmobile_scu_base);
 
-        /* Map the reset vector (in headsmp-sh73a0.S) */
+        /* Map the reset vector (in headsmp-scu.S) */
         __raw_writel(0, APARMBAREA);      /* 4k */
-        __raw_writel(__pa(sh73a0_secondary_vector), SBAR);
+        __raw_writel(__pa(shmobile_secondary_vector_scu), SBAR);
 
         /* enable cache coherency on booting CPU */
-        scu_power_mode(scu_base_addr(), SCU_PM_NORMAL);
+        scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
 }
 
 static void __init sh73a0_smp_init_cpus(void)
 {
-        unsigned int ncores = sh73a0_get_core_count();
+        /* setup sh73a0 specific SCU base */
+        shmobile_scu_base = IOMEM(SH73A0_SCU_BASE);
 
-        shmobile_smp_init_cpus(ncores);
+        shmobile_smp_init_cpus(scu_get_core_count(shmobile_scu_base));
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
@@ -122,11 +113,16 @@ static void sh73a0_cpu_die(unsigned int cpu)
         flush_cache_all();
 
         /* Set power off mode. This takes the CPU out of the MP cluster */
-        scu_power_mode(scu_base_addr(), SCU_PM_POWEROFF);
+        scu_power_mode(shmobile_scu_base, SCU_PM_POWEROFF);
 
         /* Enter shutdown mode */
         cpu_do_idle();
 }
+
+static int sh73a0_cpu_disable(unsigned int cpu)
+{
+        return 0; /* CPU0 and CPU1 supported */
+}
 #endif /* CONFIG_HOTPLUG_CPU */
 
 struct smp_operations sh73a0_smp_ops __initdata = {
@@ -136,6 +132,6 @@ struct smp_operations sh73a0_smp_ops __initdata = {
 #ifdef CONFIG_HOTPLUG_CPU
         .cpu_kill               = sh73a0_cpu_kill,
         .cpu_die                = sh73a0_cpu_die,
-        .cpu_disable            = shmobile_cpu_disable_any,
+        .cpu_disable            = sh73a0_cpu_disable,
 #endif
 };