sh: Add support for SH7786 CPU subtype.

This adds preliminary support for the SH7786 CPU subtype.

While this is a dual-core CPU, only UP is supported for now. L2 cache
support is likewise not yet implemented.

More information on this particular CPU subtype is available at:

	http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 407 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7786.c b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
new file mode 100644
index 000000000000..249b99e1adb5
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7786.c
@@ -0,0 +1,407 @@
+/*
+ * SH7786 Setup
+ *
+ * Copyright (C) 2009  Renesas Solutions Corp.
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * Based on SH7785 Setup
+ *
+ *  Copyright (C) 2007  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
+ * for more details.
+ */
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/serial.h>
+#include <linux/serial_sci.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <asm/mmzone.h>
+
+static struct plat_sci_port sci_platform_data[] = {
+	{
+		.mapbase	= 0xffea0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 40, 41, 43, 42 },
+	},
+	/*
+	 * The rest of these all have multiplexed IRQs
+	 */
+	{
+		.mapbase	= 0xffeb0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 44, 44, 44, 44 },
+	}, {
+		.mapbase	= 0xffec0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 50, 50, 50, 50 },
+	}, {
+		.mapbase	= 0xffed0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 51, 51, 51, 51 },
+	}, {
+		.mapbase	= 0xffee0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 52, 52, 52, 52 },
+	}, {
+		.mapbase	= 0xffef0000,
+		.flags		= UPF_BOOT_AUTOCONF,
+		.type		= PORT_SCIF,
+		.irqs		= { 53, 53, 53, 53 },
+	}, {
+		.flags = 0,
+	}
+};
+
+static struct platform_device sci_device = {
+	.name		= "sh-sci",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= sci_platform_data,
+	},
+};
+
+static struct platform_device *sh7786_devices[] __initdata = {
+	&sci_device,
+};
+
+static int __init sh7786_devices_setup(void)
+{
+	return platform_add_devices(sh7786_devices,
+				    ARRAY_SIZE(sh7786_devices));
+}
+device_initcall(sh7786_devices_setup);
+
+enum {
+	UNUSED = 0,
+
+	/* interrupt sources */
+
+	IRL0_LLLL, IRL0_LLLH, IRL0_LLHL, IRL0_LLHH,
+	IRL0_LHLL, IRL0_LHLH, IRL0_LHHL, IRL0_LHHH,
+	IRL0_HLLL, IRL0_HLLH, IRL0_HLHL, IRL0_HLHH,
+	IRL0_HHLL, IRL0_HHLH, IRL0_HHHL,
+
+	IRL4_LLLL, IRL4_LLLH, IRL4_LLHL, IRL4_LLHH,
+	IRL4_LHLL, IRL4_LHLH, IRL4_LHHL, IRL4_LHHH,
+	IRL4_HLLL, IRL4_HLLH, IRL4_HLHL, IRL4_HLHH,
+	IRL4_HHLL, IRL4_HHLH, IRL4_HHHL,
+
+	IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7,
+	WDT,
+	TMU0_0, TMU0_1, TMU0_2, TMU0_3,
+	TMU1_0, TMU1_1, TMU1_2,
+	DMAC0_0, DMAC0_1, DMAC0_2, DMAC0_3, DMAC0_4, DMAC0_5, DMAC0_6,
+	HUDI1, HUDI0,
+	DMAC1_0, DMAC1_1, DMAC1_2, DMAC1_3,
+	HPB_0, HPB_1, HPB_2,
+	SCIF0_0, SCIF0_1, SCIF0_2, SCIF0_3,
+	SCIF1,
+	TMU2, TMU3,
+	SCIF2, SCIF3, SCIF4, SCIF5,
+	Eth_0, Eth_1,
+	PCIeC0_0, PCIeC0_1, PCIeC0_2,
+	PCIeC1_0, PCIeC1_1, PCIeC1_2,
+	USB,
+	I2C0, I2C1,
+	DU,
+	SSI0, SSI1, SSI2, SSI3,
+	PCIeC2_0, PCIeC2_1, PCIeC2_2,
+	HAC0, HAC1,
+	FLCTL,
+	HSPI,
+	GPIO0, GPIO1,
+	Thermal,
+	INTC0, INTC1, INTC2, INTC3, INTC4, INTC5, INTC6, INTC7,
+
+	/* interrupt groups */
+};
+
+static struct intc_vect vectors[] __initdata = {
+	INTC_VECT(WDT, 0x3e0),
+	INTC_VECT(TMU0_0, 0x400), INTC_VECT(TMU0_1, 0x420),
+	INTC_VECT(TMU0_2, 0x440), INTC_VECT(TMU0_3, 0x460),
+	INTC_VECT(TMU1_0, 0x480), INTC_VECT(TMU1_1, 0x4a0),
+	INTC_VECT(TMU1_2, 0x4c0),
+	INTC_VECT(DMAC0_0, 0x500), INTC_VECT(DMAC0_1, 0x520),
+	INTC_VECT(DMAC0_2, 0x540), INTC_VECT(DMAC0_3, 0x560),
+	INTC_VECT(DMAC0_4, 0x580), INTC_VECT(DMAC0_5, 0x5a0),
+	INTC_VECT(DMAC0_6, 0x5c0),
+	INTC_VECT(HUDI1, 0x5e0), INTC_VECT(HUDI0, 0x600),
+	INTC_VECT(DMAC1_0, 0x620), INTC_VECT(DMAC1_1, 0x640),
+	INTC_VECT(DMAC1_2, 0x660), INTC_VECT(DMAC1_3, 0x680),
+	INTC_VECT(HPB_0, 0x6a0), INTC_VECT(HPB_1, 0x6c0),
+	INTC_VECT(HPB_2, 0x6e0),
+	INTC_VECT(SCIF0_0, 0x700), INTC_VECT(SCIF0_1, 0x720),
+	INTC_VECT(SCIF0_2, 0x740), INTC_VECT(SCIF0_3, 0x760),
+	INTC_VECT(SCIF1, 0x780),
+	INTC_VECT(TMU2, 0x7a0), INTC_VECT(TMU3, 0x7c0),
+	INTC_VECT(SCIF2, 0x840), INTC_VECT(SCIF3, 0x860),
+	INTC_VECT(SCIF4, 0x880), INTC_VECT(SCIF5, 0x8a0),
+	INTC_VECT(Eth_0, 0x8c0), INTC_VECT(Eth_1, 0x8e0),
+	INTC_VECT(PCIeC0_0, 0xae0), INTC_VECT(PCIeC0_1, 0xb00),
+	INTC_VECT(PCIeC0_2, 0xb20),
+	INTC_VECT(PCIeC1_0, 0xb40), INTC_VECT(PCIeC1_1, 0xb60),
+	INTC_VECT(PCIeC1_2, 0xb80),
+	INTC_VECT(USB, 0xba0),
+	INTC_VECT(I2C0, 0xcc0), INTC_VECT(I2C1, 0xce0),
+	INTC_VECT(DU, 0xd00),
+	INTC_VECT(SSI0, 0xd20), INTC_VECT(SSI1, 0xd40),
+	INTC_VECT(SSI2, 0xd60), INTC_VECT(SSI3, 0xd80),
+	INTC_VECT(PCIeC2_0, 0xda0), INTC_VECT(PCIeC2_1, 0xdc0),
+	INTC_VECT(PCIeC2_2, 0xde0),
+	INTC_VECT(HAC0, 0xe00), INTC_VECT(HAC1, 0xe20),
+	INTC_VECT(FLCTL, 0xe40),
+	INTC_VECT(HSPI, 0xe80),
+	INTC_VECT(GPIO0, 0xea0), INTC_VECT(GPIO1, 0xec0),
+	INTC_VECT(Thermal, 0xee0),
+};
+
+/* FIXME: Main CPU support only now */
+#if 1 /* Main CPU */
+#define CnINTMSK0	0xfe410030
+#define CnINTMSK1	0xfe410040
+#define CnINTMSKCLR0	0xfe410050
+#define CnINTMSKCLR1	0xfe410060
+#define CnINT2MSKR0	0xfe410a20
+#define CnINT2MSKR1	0xfe410a24
+#define CnINT2MSKR2	0xfe410a28
+#define CnINT2MSKR3	0xfe410a2c
+#define CnINT2MSKCR0	0xfe410a30
+#define CnINT2MSKCR1	0xfe410a34
+#define CnINT2MSKCR2	0xfe410a38
+#define CnINT2MSKCR3	0xfe410a3c
+#else /* Sub CPU */
+#define CnINTMSK0	0xfe410034
+#define CnINTMSK1	0xfe410044
+#define CnINTMSKCLR0	0xfe410054
+#define CnINTMSKCLR1	0xfe410064
+#define CnINT2MSKR0	0xfe410b20
+#define CnINT2MSKR1	0xfe410b24
+#define CnINT2MSKR2	0xfe410b28
+#define CnINT2MSKR3	0xfe410b2c
+#define CnINT2MSKCR0	0xfe410b30
+#define CnINT2MSKCR1	0xfe410b34
+#define CnINT2MSKCR2	0xfe410b38
+#define CnINT2MSKCR3	0xfe410b3c
+#endif
+
+#define INTMSK2		0xfe410068
+#define INTMSKCLR2	0xfe41006c
+
+static struct intc_mask_reg mask_registers[] __initdata = {
+	{ CnINTMSK0, CnINTMSKCLR0, 32,
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+	{ INTMSK2, INTMSKCLR2, 32,
+	  { IRL0_LLLL, IRL0_LLLH, IRL0_LLHL, IRL0_LLHH,
+	    IRL0_LHLL, IRL0_LHLH, IRL0_LHHL, IRL0_LHHH,
+	    IRL0_HLLL, IRL0_HLLH, IRL0_HLHL, IRL0_HLHH,
+	    IRL0_HHLL, IRL0_HHLH, IRL0_HHHL, 0,
+	    IRL4_LLLL, IRL4_LLLH, IRL4_LLHL, IRL4_LLHH,
+	    IRL4_LHLL, IRL4_LHLH, IRL4_LHHL, IRL4_LHHH,
+	    IRL4_HLLL, IRL4_HLLH, IRL4_HLHL, IRL4_HLHH,
+	    IRL4_HHLL, IRL4_HHLH, IRL4_HHHL, 0, } },
+	{ CnINT2MSKR0, CnINT2MSKCR0 , 32,
+	  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, WDT } },
+	{ CnINT2MSKR1, CnINT2MSKCR1, 32,
+	  { TMU0_0, TMU0_1, TMU0_2, TMU0_3, TMU1_0, TMU1_1, TMU1_2, 0,
+	    DMAC0_0, DMAC0_1, DMAC0_2, DMAC0_3, DMAC0_4, DMAC0_5, DMAC0_6,
+	    HUDI1, HUDI0,
+	    DMAC1_0, DMAC1_1, DMAC1_2, DMAC1_3,
+	    HPB_0, HPB_1, HPB_2,
+	    SCIF0_0, SCIF0_1, SCIF0_2, SCIF0_3,
+	    SCIF1,
+	    TMU2, TMU3, 0, } },
+	{ CnINT2MSKR2, CnINT2MSKCR2, 32,
+	  { 0, 0, SCIF2, SCIF3, SCIF4, SCIF5,
+	    Eth_0, Eth_1,
+	    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	    PCIeC0_0, PCIeC0_1, PCIeC0_2,
+	    PCIeC1_0, PCIeC1_1, PCIeC1_2,
+	    USB, 0, 0 } },
+	{ CnINT2MSKR3, CnINT2MSKCR3, 32,
+	  { 0, 0, 0, 0, 0, 0,
+	    I2C0, I2C1,
+	    DU, SSI0, SSI1, SSI2, SSI3,
+	    PCIeC2_0, PCIeC2_1, PCIeC2_2,
+	    HAC0, HAC1,
+	    FLCTL, 0,
+	    HSPI, GPIO0, GPIO1, Thermal,
+	    0, 0, 0, 0, 0, 0, 0, 0 } },
+};
+
+static struct intc_prio_reg prio_registers[] __initdata = {
+	{ 0xfe410010, 0, 32, 4, /* INTPRI */   { IRQ0, IRQ1, IRQ2, IRQ3,
+						 IRQ4, IRQ5, IRQ6, IRQ7 } },
+	{ 0xfe410800, 0, 32, 8, /* INT2PRI0 */ { 0, 0, 0, WDT } },
+	{ 0xfe410804, 0, 32, 8, /* INT2PRI1 */ { TMU0_0, TMU0_1,
+						 TMU0_2, TMU0_3 } },
+	{ 0xfe410808, 0, 32, 8, /* INT2PRI2 */ { TMU1_0, TMU1_1,
+						 TMU1_2, 0 } },
+	{ 0xfe41080c, 0, 32, 8, /* INT2PRI3 */ { DMAC0_0, DMAC0_1,
+						 DMAC0_2, DMAC0_3 } },
+	{ 0xfe410810, 0, 32, 8, /* INT2PRI4 */ { DMAC0_4, DMAC0_5,
+						 DMAC0_6, HUDI1 } },
+	{ 0xfe410814, 0, 32, 8, /* INT2PRI5 */ { HUDI0, DMAC1_0,
+						 DMAC1_1, DMAC1_2 } },
+	{ 0xfe410818, 0, 32, 8, /* INT2PRI6 */ { DMAC1_3, HPB_0,
+						 HPB_1, HPB_2 } },
+	{ 0xfe41081c, 0, 32, 8, /* INT2PRI7 */ { SCIF0_0, SCIF0_1,
+						 SCIF0_2, SCIF0_3 } },
+	{ 0xfe410820, 0, 32, 8, /* INT2PRI8 */ { SCIF1, TMU2, TMU3, 0 } },
+	{ 0xfe410824, 0, 32, 8, /* INT2PRI9 */ { 0, 0, SCIF2, SCIF3 } },
+	{ 0xfe410828, 0, 32, 8, /* INT2PRI10 */ { SCIF4, SCIF5,
+						  Eth_0, Eth_1 } },
+	{ 0xfe41082c, 0, 32, 8, /* INT2PRI11 */ { 0, 0, 0, 0 } },
+	{ 0xfe410830, 0, 32, 8, /* INT2PRI12 */ { 0, 0, 0, 0 } },
+	{ 0xfe410834, 0, 32, 8, /* INT2PRI13 */ { 0, 0, 0, 0 } },
+	{ 0xfe410838, 0, 32, 8, /* INT2PRI14 */ { 0, 0, 0, PCIeC0_0 } },
+	{ 0xfe41083c, 0, 32, 8, /* INT2PRI15 */ { PCIeC0_1, PCIeC0_2,
+						  PCIeC1_0, PCIeC1_1 } },
+	{ 0xfe410840, 0, 32, 8, /* INT2PRI16 */ { PCIeC1_2, USB, 0, 0 } },
+	{ 0xfe410844, 0, 32, 8, /* INT2PRI17 */ { 0, 0, 0, 0 } },
+	{ 0xfe410848, 0, 32, 8, /* INT2PRI18 */ { 0, 0, I2C0, I2C1 } },
+	{ 0xfe41084c, 0, 32, 8, /* INT2PRI19 */ { DU, SSI0, SSI1, SSI2 } },
+	{ 0xfe410850, 0, 32, 8, /* INT2PRI20 */ { SSI3, PCIeC2_0,
+						  PCIeC2_1, PCIeC2_2 } },
+	{ 0xfe410854, 0, 32, 8, /* INT2PRI21 */ { HAC0, HAC1, FLCTL, 0 } },
+	{ 0xfe410858, 0, 32, 8, /* INT2PRI22 */ { HSPI, GPIO0,
+						  GPIO1, Thermal } },
+	{ 0xfe41085c, 0, 32, 8, /* INT2PRI23 */ { 0, 0, 0, 0 } },
+	{ 0xfe410860, 0, 32, 8, /* INT2PRI24 */ { 0, 0, 0, 0 } },
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7786", vectors, NULL,
+			 mask_registers, prio_registers, NULL);
+
+/* Support for external interrupt pins in IRQ mode */
+
+static struct intc_vect vectors_irq0123[] __initdata = {
+	INTC_VECT(IRQ0, 0x200), INTC_VECT(IRQ1, 0x240),
+	INTC_VECT(IRQ2, 0x280), INTC_VECT(IRQ3, 0x2c0),
+};
+
+static struct intc_vect vectors_irq4567[] __initdata = {
+	INTC_VECT(IRQ4, 0x300), INTC_VECT(IRQ5, 0x340),
+	INTC_VECT(IRQ6, 0x380), INTC_VECT(IRQ7, 0x3c0),
+};
+
+static struct intc_sense_reg sense_registers[] __initdata = {
+	{ 0xfe41001c, 32, 2, /* ICR1 */   { IRQ0, IRQ1, IRQ2, IRQ3,
+					    IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static struct intc_mask_reg ack_registers[] __initdata = {
+	{ 0xfe410024, 0, 32, /* INTREQ */
+	  { IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5, IRQ6, IRQ7 } },
+};
+
+static DECLARE_INTC_DESC_ACK(intc_desc_irq0123, "sh7786-irq0123",
+			     vectors_irq0123, NULL, mask_registers,
+			     prio_registers, sense_registers, ack_registers);
+
+static DECLARE_INTC_DESC_ACK(intc_desc_irq4567, "sh7786-irq4567",
+			     vectors_irq4567, NULL, mask_registers,
+			     prio_registers, sense_registers, ack_registers);
+
+/* External interrupt pins in IRL mode */
+
+static struct intc_vect vectors_irl0123[] __initdata = {
+	INTC_VECT(IRL0_LLLL, 0x200), INTC_VECT(IRL0_LLLH, 0x220),
+	INTC_VECT(IRL0_LLHL, 0x240), INTC_VECT(IRL0_LLHH, 0x260),
+	INTC_VECT(IRL0_LHLL, 0x280), INTC_VECT(IRL0_LHLH, 0x2a0),
+	INTC_VECT(IRL0_LHHL, 0x2c0), INTC_VECT(IRL0_LHHH, 0x2e0),
+	INTC_VECT(IRL0_HLLL, 0x300), INTC_VECT(IRL0_HLLH, 0x320),
+	INTC_VECT(IRL0_HLHL, 0x340), INTC_VECT(IRL0_HLHH, 0x360),
+	INTC_VECT(IRL0_HHLL, 0x380), INTC_VECT(IRL0_HHLH, 0x3a0),
+	INTC_VECT(IRL0_HHHL, 0x3c0),
+};
+
+static struct intc_vect vectors_irl4567[] __initdata = {
+	INTC_VECT(IRL4_LLLL, 0x900), INTC_VECT(IRL4_LLLH, 0x920),
+	INTC_VECT(IRL4_LLHL, 0x940), INTC_VECT(IRL4_LLHH, 0x960),
+	INTC_VECT(IRL4_LHLL, 0x980), INTC_VECT(IRL4_LHLH, 0x9a0),
+	INTC_VECT(IRL4_LHHL, 0x9c0), INTC_VECT(IRL4_LHHH, 0x9e0),
+	INTC_VECT(IRL4_HLLL, 0xa00), INTC_VECT(IRL4_HLLH, 0xa20),
+	INTC_VECT(IRL4_HLHL, 0xa40), INTC_VECT(IRL4_HLHH, 0xa60),
+	INTC_VECT(IRL4_HHLL, 0xa80), INTC_VECT(IRL4_HHLH, 0xaa0),
+	INTC_VECT(IRL4_HHHL, 0xac0),
+};
+
+static DECLARE_INTC_DESC(intc_desc_irl0123, "sh7786-irl0123", vectors_irl0123,
+			 NULL, mask_registers, NULL, NULL);
+
+static DECLARE_INTC_DESC(intc_desc_irl4567, "sh7786-irl4567", vectors_irl4567,
+			 NULL, mask_registers, NULL, NULL);
+
+#define INTC_ICR0	0xfe410000
+#define INTC_INTMSK0	CnINTMSK0
+#define INTC_INTMSK1	CnINTMSK1
+#define INTC_INTMSK2	INTMSK2
+#define INTC_INTMSKCLR1	CnINTMSKCLR1
+#define INTC_INTMSKCLR2	INTMSKCLR2
+
+void __init plat_irq_setup(void)
+{
+	/* disable IRQ3-0 + IRQ7-4 */
+	ctrl_outl(0xff000000, INTC_INTMSK0);
+
+	/* disable IRL3-0 + IRL7-4 */
+	ctrl_outl(0xc0000000, INTC_INTMSK1);
+	ctrl_outl(0xfffefffe, INTC_INTMSK2);
+
+	/* select IRL mode for IRL3-0 + IRL7-4 */
+	ctrl_outl(ctrl_inl(INTC_ICR0) & ~0x00c00000, INTC_ICR0);
+
+	register_intc_controller(&intc_desc);
+}
+
+void __init plat_irq_setup_pins(int mode)
+{
+	switch (mode) {
+	case IRQ_MODE_IRQ7654:
+		/* select IRQ mode for IRL7-4 */
+		ctrl_outl(ctrl_inl(INTC_ICR0) | 0x00400000, INTC_ICR0);
+		register_intc_controller(&intc_desc_irq4567);
+		break;
+	case IRQ_MODE_IRQ3210:
+		/* select IRQ mode for IRL3-0 */
+		ctrl_outl(ctrl_inl(INTC_ICR0) | 0x00800000, INTC_ICR0);
+		register_intc_controller(&intc_desc_irq0123);
+		break;
+	case IRQ_MODE_IRL7654:
+		/* enable IRL7-4 but don't provide any masking */
+		ctrl_outl(0x40000000, INTC_INTMSKCLR1);
+		ctrl_outl(0x0000fffe, INTC_INTMSKCLR2);
+		break;
+	case IRQ_MODE_IRL3210:
+		/* enable IRL0-3 but don't provide any masking */
+		ctrl_outl(0x80000000, INTC_INTMSKCLR1);
+		ctrl_outl(0xfffe0000, INTC_INTMSKCLR2);
+		break;
+	case IRQ_MODE_IRL7654_MASK:
+		/* enable IRL7-4 and mask using cpu intc controller */
+		ctrl_outl(0x40000000, INTC_INTMSKCLR1);
+		register_intc_controller(&intc_desc_irl4567);
+		break;
+	case IRQ_MODE_IRL3210_MASK:
+		/* enable IRL0-3 and mask using cpu intc controller */
+		ctrl_outl(0x80000000, INTC_INTMSKCLR1);
+		register_intc_controller(&intc_desc_irl0123);
+		break;
+	default:
+		BUG();
+	}
+}
+
+void __init plat_mem_setup(void)
+{
+}