ARM: mach-shmobile: SH-Mobile AP4 support.

This adds preliminary support for the SH7372 (SH-Mobile AP4) CPU and
the AP4EVB reference board.

Only timer, serial console and NOR flash are supported at this point.
Support for the interrupt controller, pinmux support, clock framework
and runtime pm will be submitted as feature patches on top of this.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

5 files changed, 388 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 160b2ee..06b3b61 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -18,6 +18,14 @@ config ARCH_SH7377
 	select GENERIC_TIME
 	select GENERIC_CLOCKEVENTS
 
+config ARCH_SH7372
+	bool "SH-Mobile AP4 (SH7372)"
+	select CPU_V7
+	select HAVE_CLK
+	select COMMON_CLKDEV
+	select GENERIC_TIME
+	select GENERIC_CLOCKEVENTS
+
 comment "SH-Mobile Board Type"
 
 config MACH_G3EVM
@@ -28,6 +36,10 @@ config MACH_G4EVM
 	bool "G4EVM board"
 	depends on ARCH_SH7377
 
+config MACH_AP4EVB
+	bool "AP4EVB board"
+	depends on ARCH_SH7372
+
 comment "SH-Mobile System Configuration"
 
 menu "Memory configuration"
@@ -36,6 +48,7 @@ config MEMORY_START
 	hex "Physical memory start address"
 	default "0x50000000" if MACH_G3EVM
 	default "0x40000000" if MACH_G4EVM
+	default "0x40000000" if MACH_AP4EVB
 	default "0x00000000"
 	---help---
 	  Tweak this only when porting to a new machine which does not
@@ -46,6 +59,7 @@ config MEMORY_SIZE
 	hex "Physical memory size"
 	default "0x08000000" if MACH_G3EVM
 	default "0x08000000" if MACH_G4EVM
+	default "0x10000000" if MACH_AP4EVB
 	default "0x04000000"
 	help
 	  This sets the default memory size assumed by your kernel. It can
diff --git a/arch/arm/mach-shmobile/Makefile b/arch/arm/mach-shmobile/Makefile
index 3f91268..88893db 100644
--- a/arch/arm/mach-shmobile/Makefile
+++ b/arch/arm/mach-shmobile/Makefile
@@ -8,7 +8,9 @@ obj-y				:= timer.o
 # CPU objects
 obj-$(CONFIG_ARCH_SH7367)	+= setup-sh7367.o clock-sh7367.o
 obj-$(CONFIG_ARCH_SH7377)	+= setup-sh7377.o clock-sh7367.o
+obj-$(CONFIG_ARCH_SH7372)	+= setup-sh7372.o clock-sh7367.o
 
 # Board objects
 obj-$(CONFIG_MACH_G3EVM)	+= board-g3evm.o
 obj-$(CONFIG_MACH_G4EVM)	+= board-g4evm.o
+obj-$(CONFIG_MACH_AP4EVB)	+= board-ap4evb.o
diff --git a/arch/arm/mach-shmobile/board-ap4evb.c b/arch/arm/mach-shmobile/board-ap4evb.c
new file mode 100644
index 0000000..a8d815c
--- /dev/null
+++ b/arch/arm/mach-shmobile/board-ap4evb.c
@@ -0,0 +1,127 @@
+/*
+ * AP4EVB board support
+ *
+ * Copyright (C) 2010  Magnus Damm
+ * Copyright (C) 2008  Yoshihiro Shimoda
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/io.h>
+#include <mach/common.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+static struct mtd_partition nor_flash_partitions[] = {
+	{
+		.name		= "loader",
+		.offset		= 0x00000000,
+		.size		= 512 * 1024,
+	},
+	{
+		.name		= "bootenv",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 512 * 1024,
+	},
+	{
+		.name		= "kernel_ro",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 8 * 1024 * 1024,
+		.mask_flags	= MTD_WRITEABLE,
+	},
+	{
+		.name		= "kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= 8 * 1024 * 1024,
+	},
+	{
+		.name		= "data",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+	},
+};
+
+static struct physmap_flash_data nor_flash_data = {
+	.width		= 2,
+	.parts		= nor_flash_partitions,
+	.nr_parts	= ARRAY_SIZE(nor_flash_partitions),
+};
+
+static struct resource nor_flash_resources[] = {
+	[0]	= {
+		.start	= 0x00000000,
+		.end	= 0x08000000 - 1,
+		.flags	= IORESOURCE_MEM,
+	}
+};
+
+static struct platform_device nor_flash_device = {
+	.name		= "physmap-flash",
+	.dev		= {
+		.platform_data	= &nor_flash_data,
+	},
+	.num_resources	= ARRAY_SIZE(nor_flash_resources),
+	.resource	= nor_flash_resources,
+};
+
+
+static struct platform_device *ap4evb_devices[] __initdata = {
+	&nor_flash_device,
+};
+
+static struct map_desc ap4evb_io_desc[] __initdata = {
+	/* create a 1:1 entity map for 0xe6xxxxxx
+	 * used by CPGA, INTC and PFC.
+	 */
+	{
+		.virtual	= 0xe6000000,
+		.pfn		= __phys_to_pfn(0xe6000000),
+		.length		= 256 << 20,
+		.type		= MT_DEVICE_NONSHARED
+	},
+};
+
+static void __init ap4evb_map_io(void)
+{
+	iotable_init(ap4evb_io_desc, ARRAY_SIZE(ap4evb_io_desc));
+
+	/* setup early devices and clocks here as well */
+	sh7372_add_early_devices();
+	sh7367_clock_init(); /* use g3 clocks for now */
+}
+
+static void __init ap4evb_init(void)
+{
+	sh7372_add_standard_devices();
+
+	platform_add_devices(ap4evb_devices, ARRAY_SIZE(ap4evb_devices));
+}
+
+MACHINE_START(AP4EVB, "ap4evb")
+	.phys_io	= 0xe6000000,
+	.io_pg_offst	= ((0xe6000000) >> 18) & 0xfffc,
+	.map_io		= ap4evb_map_io,
+	.init_irq	= sh7372_init_irq,
+	.init_machine	= ap4evb_init,
+	.timer		= &shmobile_timer,
+MACHINE_END
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 3595d24..a12eb4d 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -12,4 +12,8 @@ extern void sh7377_init_irq(void);
 extern void sh7377_add_early_devices(void);
 extern void sh7377_add_standard_devices(void);
 
+extern void sh7372_init_irq(void);
+extern void sh7372_add_early_devices(void);
+extern void sh7372_add_standard_devices(void);
+
 #endif /* __ARCH_MACH_COMMON_H */
diff --git a/arch/arm/mach-shmobile/setup-sh7372.c b/arch/arm/mach-shmobile/setup-sh7372.c
new file mode 100644
index 0000000..db972e6
--- /dev/null
+++ b/arch/arm/mach-shmobile/setup-sh7372.c
@@ -0,0 +1,241 @@
+/*
+ * sh7372 processor support
+ *
+ * Copyright (C) 2010  Magnus Damm
+ * Copyright (C) 2008  Yoshihiro Shimoda
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/io.h>
+#include <linux/serial_sci.h>
+#include <linux/sh_intc.h>
+#include <linux/sh_timer.h>
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+
+static struct plat_sci_port scif0_platform_data = {
+	.mapbase	= 0xe6c40000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs		= { 80, 80, 80, 80 },
+};
+
+static struct platform_device scif0_device = {
+	.name		= "sh-sci",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &scif0_platform_data,
+	},
+};
+
+static struct plat_sci_port scif1_platform_data = {
+	.mapbase	= 0xe6c50000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 81, 81, 81, 81 },
+};
+
+static struct platform_device scif1_device = {
+	.name		= "sh-sci",
+	.id		= 1,
+	.dev		= {
+		.platform_data	= &scif1_platform_data,
+	},
+};
+
+static struct plat_sci_port scif2_platform_data = {
+	.mapbase	= 0xe6c60000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 82, 82, 82, 82 },
+};
+
+static struct platform_device scif2_device = {
+	.name		= "sh-sci",
+	.id		= 2,
+	.dev		= {
+		.platform_data	= &scif2_platform_data,
+	},
+};
+
+static struct plat_sci_port scif3_platform_data = {
+	.mapbase	= 0xe6c70000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 83, 83, 83, 83 },
+};
+
+static struct platform_device scif3_device = {
+	.name		= "sh-sci",
+	.id		= 3,
+	.dev		= {
+		.platform_data	= &scif3_platform_data,
+	},
+};
+
+static struct plat_sci_port scif4_platform_data = {
+	.mapbase	= 0xe6c80000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 89, 89, 89, 89 },
+};
+
+static struct platform_device scif4_device = {
+	.name		= "sh-sci",
+	.id		= 4,
+	.dev		= {
+		.platform_data	= &scif4_platform_data,
+	},
+};
+
+static struct plat_sci_port scif5_platform_data = {
+	.mapbase	= 0xe6cb0000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 90, 90, 90, 90 },
+};
+
+static struct platform_device scif5_device = {
+	.name		= "sh-sci",
+	.id		= 5,
+	.dev		= {
+		.platform_data	= &scif5_platform_data,
+	},
+};
+
+static struct plat_sci_port scif6_platform_data = {
+	.mapbase	= 0xe6c30000,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.type		= PORT_SCIF,
+	.irqs           = { 91, 91, 91, 91 },
+};
+
+static struct platform_device scif6_device = {
+	.name		= "sh-sci",
+	.id		= 6,
+	.dev		= {
+		.platform_data	= &scif6_platform_data,
+	},
+};
+
+static struct sh_timer_config cmt10_platform_data = {
+	.name = "CMT10",
+	.channel_offset = 0x10,
+	.timer_bit = 0,
+	.clk = "r_clk",
+	.clockevent_rating = 125,
+	.clocksource_rating = 125,
+};
+
+static struct resource cmt10_resources[] = {
+	[0] = {
+		.name	= "CMT10",
+		.start	= 0xe6138010,
+		.end	= 0xe613801b,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 72,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device cmt10_device = {
+	.name		= "sh_cmt",
+	.id		= 10,
+	.dev = {
+		.platform_data	= &cmt10_platform_data,
+	},
+	.resource	= cmt10_resources,
+	.num_resources	= ARRAY_SIZE(cmt10_resources),
+};
+
+static struct platform_device *sh7372_early_devices[] __initdata = {
+	&scif0_device,
+	&scif1_device,
+	&scif2_device,
+	&scif3_device,
+	&scif4_device,
+	&scif5_device,
+	&scif6_device,
+	&cmt10_device,
+};
+
+void __init sh7372_add_standard_devices(void)
+{
+	platform_add_devices(sh7372_early_devices,
+			    ARRAY_SIZE(sh7372_early_devices));
+}
+
+#define SMSTPCR3 0xe615013c
+#define SMSTPCR3_CMT1 (1 << 29)
+
+void __init sh7372_add_early_devices(void)
+{
+	/* enable clock to CMT1 */
+	__raw_writel(__raw_readl(SMSTPCR3) & ~SMSTPCR3_CMT1, SMSTPCR3);
+
+	early_platform_add_devices(sh7372_early_devices,
+				   ARRAY_SIZE(sh7372_early_devices));
+}
+
+enum {
+	UNUSED = 0,
+
+	/* interrupt sources INTCA */
+
+	SCIFA0, SCIFA1, SCIFA2, SCIFA3, SCIFA4, SCIFA5, SCIFB,
+	CMT10,
+};
+
+static struct intc_vect vectors[] = {
+	INTC_VECT(CMT10, 0xb00),
+	INTC_VECT(SCIFA0, 0xc00), INTC_VECT(SCIFA1, 0xc20),
+	INTC_VECT(SCIFA2, 0xc40), INTC_VECT(SCIFA3, 0xc60),
+	INTC_VECT(SCIFA4, 0xd20), INTC_VECT(SCIFA5, 0xd40),
+	INTC_VECT(SCIFB, 0xd60),
+};
+
+static struct intc_mask_reg mask_registers[] = {
+	{ 0xe6940094, 0xe69400d4, 8, /* IMR5A / IMCR5A */
+	  { 0, 0, 0, 0, SCIFA3, SCIFA2, SCIFA1, SCIFA0 } },
+	{ 0xe6940098, 0xe69400d8, 8, /* IMR6A / IMCR6A */
+	  { SCIFB, SCIFA5, SCIFA4, 0, 0, 0, 0, 0 } },
+	{ 0xe69400a4, 0xe69400e4, 8, /* IMR9A / IMCR9A */
+	  { 0, 0, 0, CMT10, 0, 0, 0, 0 } },
+};
+
+static struct intc_prio_reg prio_registers[] = {
+	{ 0xe6940014, 0, 16, 4, /* IPRFA */ { 0, 0, 0, CMT10 } },
+	{ 0xe6940018, 0, 16, 4, /* IPRGA */ { SCIFA0, SCIFA1,
+					      SCIFA2, SCIFA3 } },
+	{ 0xe6940020, 0, 16, 4, /* IPRIA */ { 0, SCIFA4, 0, 0 } },
+	{ 0xe6940034, 0, 16, 4, /* IPRNA */ { SCIFB, SCIFA5, 0, 0 } },
+};
+
+static DECLARE_INTC_DESC(intc_desc, "sh7372", vectors, NULL, mask_registers,
+			 prio_registers, NULL);
+
+void __init sh7372_init_irq(void)
+{
+	register_intc_controller(&intc_desc);
+}