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156 lines
3.2 KiB
156 lines
3.2 KiB
/* |
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* amcore.c -- Support for Sysam AMCORE open board |
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* |
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* (C) Copyright 2016, Angelo Dureghello <[email protected]> |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive |
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* for more details. |
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*/ |
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#include <linux/device.h> |
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#include <linux/platform_device.h> |
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#include <linux/dm9000.h> |
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#include <linux/irq.h> |
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#include <linux/interrupt.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/map.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/mtd/physmap.h> |
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#include <linux/i2c.h> |
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#include <asm/coldfire.h> |
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#include <asm/mcfsim.h> |
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#include <asm/io.h> |
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#if IS_ENABLED(CONFIG_DM9000) |
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#define DM9000_IRQ 25 |
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#define DM9000_ADDR 0x30000000 |
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/* |
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* DEVICES and related device RESOURCES |
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*/ |
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static struct resource dm9000_resources[] = { |
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/* physical address of the address register (CMD [A2] to 0)*/ |
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[0] = { |
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.start = DM9000_ADDR, |
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.end = DM9000_ADDR, |
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.flags = IORESOURCE_MEM, |
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}, |
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/* |
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* physical address of the data register (CMD [A2] to 1), |
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* driver wants a range >=4 to assume a 32bit data bus |
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*/ |
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[1] = { |
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.start = DM9000_ADDR + 4, |
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.end = DM9000_ADDR + 7, |
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.flags = IORESOURCE_MEM, |
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}, |
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/* IRQ line the device's interrupt pin is connected to */ |
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[2] = { |
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.start = DM9000_IRQ, |
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.end = DM9000_IRQ, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct dm9000_plat_data dm9000_platdata = { |
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.flags = DM9000_PLATF_32BITONLY, |
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}; |
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static struct platform_device dm9000_device = { |
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.name = "dm9000", |
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.id = 0, |
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.num_resources = ARRAY_SIZE(dm9000_resources), |
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.resource = dm9000_resources, |
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.dev = { |
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.platform_data = &dm9000_platdata, |
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} |
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}; |
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#endif |
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static void __init dm9000_pre_init(void) |
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{ |
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/* Set the dm9000 interrupt to be auto-vectored */ |
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mcf_autovector(DM9000_IRQ); |
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} |
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/* |
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* Partitioning of parallel NOR flash (39VF3201B) |
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*/ |
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static struct mtd_partition amcore_partitions[] = { |
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{ |
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.name = "U-Boot (128K)", |
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.size = 0x20000, |
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.offset = 0x0 |
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}, |
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{ |
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.name = "Kernel+ROMfs (2994K)", |
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.size = 0x2E0000, |
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.offset = MTDPART_OFS_APPEND |
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}, |
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{ |
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.name = "Flash Free Space (1024K)", |
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.size = MTDPART_SIZ_FULL, |
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.offset = MTDPART_OFS_APPEND |
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} |
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}; |
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static struct physmap_flash_data flash_data = { |
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.parts = amcore_partitions, |
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.nr_parts = ARRAY_SIZE(amcore_partitions), |
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.width = 2, |
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}; |
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static struct resource flash_resource = { |
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.start = 0xffc00000, |
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.end = 0xffffffff, |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device flash_device = { |
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.name = "physmap-flash", |
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.id = -1, |
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.resource = &flash_resource, |
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.num_resources = 1, |
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.dev = { |
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.platform_data = &flash_data, |
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}, |
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}; |
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static struct platform_device rtc_device = { |
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.name = "rtc-ds1307", |
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.id = -1, |
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}; |
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static struct i2c_board_info amcore_i2c_info[] __initdata = { |
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{ |
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I2C_BOARD_INFO("ds1338", 0x68), |
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}, |
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}; |
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static struct platform_device *amcore_devices[] __initdata = { |
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#if IS_ENABLED(CONFIG_DM9000) |
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&dm9000_device, |
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#endif |
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&flash_device, |
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&rtc_device, |
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}; |
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static int __init init_amcore(void) |
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{ |
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#if IS_ENABLED(CONFIG_DM9000) |
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dm9000_pre_init(); |
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#endif |
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/* Add i2c RTC Dallas chip supprt */ |
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i2c_register_board_info(0, amcore_i2c_info, |
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ARRAY_SIZE(amcore_i2c_info)); |
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platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices)); |
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return 0; |
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} |
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arch_initcall(init_amcore);
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