ARM: mach-shmobile: Initial AG5 and AG5EVM support

This patch adds initial support for Renesas SH-Mobile AG5.

At this point the AG5 CPU support is limited to the ARM
core, SCIF serial and a CMT timer together with L2 cache
and the GIC. The AG5EVM board also supports Ethernet.

Future patches will add support for GPIO, INTCS, CPGA
and platform data / driver updates for devices such as
IIC, LCDC, FSI, KEYSC, CEU and SDHI among others.

The code in entry-macro.S will be cleaned up when the
ARM IRQ demux code improvements have been merged.

Depends on the AG5EVM mach-type recently registered but
not yet present in arch/arm/tools/mach-types.

As the AG5EVM board comes with 512MiB memory it is
recommended to turn on HIGHMEM.

Many thanks to Yoshii-san for initial bring up.

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

1 files changed, 159 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
new file mode 100644
index 000000000000..bade04accc80
--- /dev/null
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -0,0 +1,159 @@
+/*
+ * arch/arm/mach-shmobile/board-ag5evm.c
+ *
+ * Copyright (C) 2010  Takashi Yoshii <yoshii.takashi.zj@renesas.com>
+ * Copyright (C) 2009  Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * 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/io.h>
+#include <linux/dma-mapping.h>
+#include <linux/serial_sci.h>
+#include <linux/smsc911x.h>
+#include <linux/gpio.h>
+#include <mach/hardware.h>
+#include <mach/sh73a0.h>
+#include <mach/common.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/traps.h>
+
+static struct resource smsc9220_resources[] = {
+	[0] = {
+		.start		= 0x14000000,
+		.end		= 0x14000000 + SZ_64K - 1,
+		.flags		= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= gic_spi(33), /* PINT1 */
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct smsc911x_platform_config smsc9220_platdata = {
+	.flags		= SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
+	.phy_interface	= PHY_INTERFACE_MODE_MII,
+	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
+	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
+};
+
+static struct platform_device eth_device = {
+	.name		= "smsc911x",
+	.id		= 0,
+	.dev  = {
+		.platform_data = &smsc9220_platdata,
+	},
+	.resource	= smsc9220_resources,
+	.num_resources	= ARRAY_SIZE(smsc9220_resources),
+};
+
+static struct platform_device *ag5evm_devices[] __initdata = {
+	&eth_device,
+};
+
+static struct map_desc ag5evm_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 ag5evm_map_io(void)
+{
+	iotable_init(ag5evm_io_desc, ARRAY_SIZE(ag5evm_io_desc));
+
+	/* setup early devices and console here as well */
+	sh73a0_add_early_devices();
+	shmobile_setup_console();
+}
+
+#define PINTC_ADDR	0xe6900000
+#define PINTER0A	(PINTC_ADDR + 0xa0)
+#define PINTCR0A	(PINTC_ADDR + 0xb0)
+
+void __init ag5evm_init_irq(void)
+{
+	/* setup PINT: enable PINTA2 as active low */
+	__raw_writel(__raw_readl(PINTER0A) | (1<<29), PINTER0A);
+	__raw_writew(__raw_readw(PINTCR0A) | (2<<10), PINTCR0A);
+
+	gic_dist_init(0, __io(0xf0001000), 29);
+	gic_cpu_init(0, __io(0xf0000100));
+}
+
+#define PORT144CR 0xe6052090
+#define PORT145CR 0xe6052091
+
+#define PORT154CR 0xe605209a
+#define PORT155CR 0xe605209b
+#define PORT156CR 0xe605209c
+#define PORT157CR 0xe605209d
+
+#define PORTR159_128DR 0xe6056004
+
+static void __init ag5evm_init(void)
+{
+	/* enable SCIFA2 */
+	__raw_writeb(0x12, PORT154CR); /* TXD */
+	__raw_writeb(0x22, PORT155CR); /* RXD */
+	__raw_writeb(0x12, PORT156CR); /* RTS */
+	__raw_writeb(0x22, PORT157CR); /* CTS */
+
+	/* enable SMSC911X */
+	__raw_writeb(0x20, PORT144CR); /* PINTA2 */
+	__raw_writeb(0x10, PORT145CR); /* RESET */
+	__raw_writel(__raw_readl(PORTR159_128DR) & ~(1 << 17), PORTR159_128DR);
+
+#ifdef CONFIG_CACHE_L2X0
+	/* Shared attribute override enable, 64K*8way */
+	l2x0_init(__io(0xf0100000), 0x00460000, 0xc2000fff);
+#endif
+	sh73a0_add_standard_devices();
+	platform_add_devices(ag5evm_devices, ARRAY_SIZE(ag5evm_devices));
+}
+
+static void __init ag5evm_timer_init(void)
+{
+	sh73a0_clock_init();
+	shmobile_timer.init();
+	return;
+}
+
+struct sys_timer ag5evm_timer = {
+	.init	= ag5evm_timer_init,
+};
+
+MACHINE_START(AG5EVM, "ag5evm")
+	.map_io		= ag5evm_map_io,
+	.init_irq	= ag5evm_init_irq,
+	.init_machine	= ag5evm_init,
+	.timer		= &ag5evm_timer,
+MACHINE_END