157 lines
3.2 KiB
C
157 lines
3.2 KiB
C
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/*
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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 <angelo@sysam.it>
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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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