diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-28 16:54:49 +0100 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-28 16:54:49 +0100 |
commit | d1a76187a5be4f89c6cb19d800cb5fb7aac735c5 (patch) | |
tree | 2fac3ffbfffc7560eeef8364b541d0d7a0057920 /arch/avr32/boards/mimc200/flash.c | |
parent | c7e78cff6b7518212247fb20b1dc6411540dc9af (diff) | |
parent | 0173a3265b228da319ceb9c1ec6a5682fd1b2d92 (diff) |
Merge commit 'v2.6.28-rc2' into core/locking
Conflicts:
arch/um/include/asm/system.h
Diffstat (limited to 'arch/avr32/boards/mimc200/flash.c')
-rw-r--r-- | arch/avr32/boards/mimc200/flash.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/avr32/boards/mimc200/flash.c b/arch/avr32/boards/mimc200/flash.c new file mode 100644 index 00000000000..d83d650fc13 --- /dev/null +++ b/arch/avr32/boards/mimc200/flash.c @@ -0,0 +1,143 @@ +/* + * MIMC200 board-specific flash initialization + * + * Copyright (C) 2008 Mercury IMC Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> + +#include <mach/smc.h> + +static struct smc_timing flash_timing __initdata = { + .ncs_read_setup = 0, + .nrd_setup = 15, + .ncs_write_setup = 0, + .nwe_setup = 0, + + .ncs_read_pulse = 115, + .nrd_pulse = 110, + .ncs_write_pulse = 60, + .nwe_pulse = 60, + + .read_cycle = 115, + .write_cycle = 100, +}; + +static struct smc_config flash_config __initdata = { + .bus_width = 2, + .nrd_controlled = 1, + .nwe_controlled = 1, + .byte_write = 1, +}; + +/* system flash definition */ + +static struct mtd_partition flash_parts_system[] = { + { + .name = "u-boot", + .offset = 0x00000000, + .size = 0x00020000, /* 128 KiB */ + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "root", + .offset = 0x00020000, + .size = 0x007c0000, + }, + { + .name = "splash", + .offset = 0x007e0000, + .size = 0x00010000, /* 64KiB */ + }, + { + .name = "env", + .offset = 0x007f0000, + .size = 0x00010000, + .mask_flags = MTD_WRITEABLE, + }, +}; + +static struct physmap_flash_data flash_system = { + .width = 2, + .nr_parts = ARRAY_SIZE(flash_parts_system), + .parts = flash_parts_system, +}; + +static struct resource flash_resource_system = { + .start = 0x00000000, + .end = 0x007fffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device flash_device_system = { + .name = "physmap-flash", + .id = 0, + .resource = &flash_resource_system, + .num_resources = 1, + .dev = { + .platform_data = &flash_system, + }, +}; + +/* data flash definition */ + +static struct mtd_partition flash_parts_data[] = { + { + .name = "data", + .offset = 0x00000000, + .size = 0x00800000, + }, +}; + +static struct physmap_flash_data flash_data = { + .width = 2, + .nr_parts = ARRAY_SIZE(flash_parts_data), + .parts = flash_parts_data, +}; + +static struct resource flash_resource_data = { + .start = 0x08000000, + .end = 0x087fffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device flash_device_data = { + .name = "physmap-flash", + .id = 1, + .resource = &flash_resource_data, + .num_resources = 1, + .dev = { + .platform_data = &flash_data, + }, +}; + +/* This needs to be called after the SMC has been initialized */ +static int __init mimc200_flash_init(void) +{ + int ret; + + smc_set_timing(&flash_config, &flash_timing); + ret = smc_set_configuration(0, &flash_config); + if (ret < 0) { + printk(KERN_ERR "mimc200: failed to set 'System' NOR flash timing\n"); + return ret; + } + ret = smc_set_configuration(1, &flash_config); + if (ret < 0) { + printk(KERN_ERR "mimc200: failed to set 'Data' NOR flash timing\n"); + return ret; + } + + platform_device_register(&flash_device_system); + platform_device_register(&flash_device_data); + + return 0; +} +device_initcall(mimc200_flash_init); |