diff options
Diffstat (limited to 'arch/arm/mach-davinci/board-evm.c')
-rw-r--r-- | arch/arm/mach-davinci/board-evm.c | 131 |
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 000000000000..633c12e43044 --- /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 |