[ARM] 4303/3: base kernel support for TI DaVinci

Add base kernel support for the TI DaVinci platform.

This patch only includes interrupts, timers, CPU identification,
serial support and basic power and sleep controller init.  More
drivers to come.

Signed-off-by: Kevin Hilman <khilman@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 131 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/board-evm.c b/arch/arm/mach-davinci/board-evm.c
new file mode 100644
index 00000000000..633c12e4304
--- /dev/null
+++ b/arch/arm/mach-davinci/board-evm.c
@@ -0,0 +1,131 @@
+/*
+ * TI DaVinci EVM board support
+ *
+ * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/setup.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <asm/arch/common.h>
+
+/* other misc. init functions */
+void __init davinci_psc_init(void);
+void __init davinci_irq_init(void);
+void __init davinci_map_common_io(void);
+
+/* NOR Flash base address set to CS0 by default */
+#define NOR_FLASH_PHYS 0x02000000
+
+static struct mtd_partition davinci_evm_partitions[] = {
+	/* bootloader (U-Boot, etc) in first 4 sectors */
+	{
+		.name		= "bootloader",
+		.offset		= 0,
+		.size		= 4 * SZ_64K,
+		.mask_flags	= MTD_WRITEABLE, /* force read-only */
+	},
+	/* bootloader params in the next 1 sectors */
+	{
+		.name		= "params",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_64K,
+		.mask_flags	= 0,
+	},
+	/* kernel */
+	{
+		.name		= "kernel",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= SZ_2M,
+		.mask_flags	= 0
+	},
+	/* file system */
+	{
+		.name		= "filesystem",
+		.offset		= MTDPART_OFS_APPEND,
+		.size		= MTDPART_SIZ_FULL,
+		.mask_flags	= 0
+	}
+};
+
+static struct physmap_flash_data davinci_evm_flash_data = {
+	.width		= 2,
+	.parts		= davinci_evm_partitions,
+	.nr_parts	= ARRAY_SIZE(davinci_evm_partitions),
+};
+
+/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
+ * limits addresses to 16M, so using addresses past 16M will wrap */
+static struct resource davinci_evm_flash_resource = {
+	.start		= NOR_FLASH_PHYS,
+	.end		= NOR_FLASH_PHYS + SZ_16M - 1,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device davinci_evm_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &davinci_evm_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &davinci_evm_flash_resource,
+};
+
+static struct platform_device *davinci_evm_devices[] __initdata = {
+	&davinci_evm_flash_device,
+};
+
+static void __init
+davinci_evm_map_io(void)
+{
+	davinci_map_common_io();
+}
+
+static __init void davinci_evm_init(void)
+{
+	davinci_psc_init();
+
+#if defined(CONFIG_BLK_DEV_DAVINCI) || defined(CONFIG_BLK_DEV_DAVINCI_MODULE)
+	printk(KERN_WARNING "WARNING: both IDE and NOR flash are enabled, "
+	       "but share pins.\n\t Disable IDE for NOR support.\n");
+#endif
+
+	platform_add_devices(davinci_evm_devices,
+			     ARRAY_SIZE(davinci_evm_devices));
+}
+
+static __init void davinci_evm_irq_init(void)
+{
+	davinci_irq_init();
+}
+
+MACHINE_START(DAVINCI_EVM, "DaVinci EVM")
+	/* Maintainer: MontaVista Software <source@mvista.com> */
+	.phys_io      = IO_PHYS,
+	.io_pg_offst  = (io_p2v(IO_PHYS) >> 18) & 0xfffc,
+	.boot_params  = (DAVINCI_DDR_BASE + 0x100),
+	.map_io	      = davinci_evm_map_io,
+	.init_irq     = davinci_evm_irq_init,
+	.timer	      = &davinci_timer,
+	.init_machine = davinci_evm_init,
+MACHINE_END