/*
* arch/arm/mach-ep93xx/ts72xx.c
* Technologic Systems TS72xx SBC support.
*
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/m48t86.h>
#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
static struct map_desc ts72xx_io_desc[] __initdata = {
{
.virtual = TS72XX_MODEL_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_MODEL_PHYS_BASE),
.length = TS72XX_MODEL_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_OPTIONS_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_OPTIONS_PHYS_BASE),
.length = TS72XX_OPTIONS_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_OPTIONS2_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE),
.length = TS72XX_OPTIONS2_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_RTC_INDEX_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE),
.length = TS72XX_RTC_INDEX_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_RTC_DATA_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE),
.length = TS72XX_RTC_DATA_SIZE,
.type = MT_DEVICE,
}
};
static struct map_desc ts72xx_nand_io_desc[] __initdata = {
{
.virtual = TS72XX_NAND_DATA_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND1_DATA_PHYS_BASE),
.length = TS72XX_NAND_DATA_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND1_CONTROL_PHYS_BASE),
.length = TS72XX_NAND_CONTROL_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_NAND_BUSY_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND1_BUSY_PHYS_BASE),
.length = TS72XX_NAND_BUSY_SIZE,
.type = MT_DEVICE,
}
};
static struct map_desc ts72xx_alternate_nand_io_desc[] __initdata = {
{
.virtual = TS72XX_NAND_DATA_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND2_DATA_PHYS_BASE),
.length = TS72XX_NAND_DATA_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_NAND_CONTROL_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND2_CONTROL_PHYS_BASE),
.length = TS72XX_NAND_CONTROL_SIZE,
.type = MT_DEVICE,
}, {
.virtual = TS72XX_NAND_BUSY_VIRT_BASE,
.pfn = __phys_to_pfn(TS72XX_NAND2_BUSY_PHYS_BASE),
.length = TS72XX_NAND_BUSY_SIZE,
.type = MT_DEVICE,
}
};
static void __init ts72xx_map_io(void)
{
ep93xx_map_io();
iotable_init(ts72xx_io_desc, ARRAY_SIZE(ts72xx_io_desc));
/*
* The TS-7200 has NOR flash, the other models have NAND flash.
*/
if (!board_is_ts7200()) {
if (is_ts9420_installed()) {
iotable_init(ts72xx_alternate_nand_io_desc,
ARRAY_SIZE(ts72xx_alternate_nand_io_desc));
} else {
iotable_init(ts72xx_nand_io_desc,
ARRAY_SIZE(ts72xx_nand_io_desc));
}
}
}
static struct physmap_flash_data ts72xx_flash_data = {
.width = 1,
};
static struct resource ts72xx_flash_resource = {
.start = TS72XX_NOR_PHYS_BASE,
.end = TS72XX_NOR_PHYS_BASE + 0x00ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device ts72xx_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &ts72xx_flash_data,
},
.num_resources = 1,
.resource = &ts72xx_flash_resource,
};
static unsigned char ts72xx_rtc_readbyte(unsigned long addr)
{
__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE);
}
static void ts72xx_rtc_writebyte(unsigned char value, unsigned long addr)
{
__raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE);
__raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE);
}
static struct m48t86_ops ts72xx_rtc_ops = {
.readbyte = ts72xx_rtc_readbyte,
.writebyte = ts72xx_rtc_writebyte,
};
static struct platform_device ts72xx_rtc_device = {
.name = "rtc-m48t86",
.id = -1,
.dev = {
.platform_data = &ts72xx_rtc_ops,
},
.num_resources = 0,
};
static void __init ts72xx_init_machine(void)
{
ep93xx_init_devices();
if (board_is_ts7200())
platform_device_register(&ts72xx_flash);
platform_device_register(&ts72xx_rtc_device);
}
MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC")
/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
.phys_io = EP93XX_APB_PHYS_BASE,
.io_pg_offst = ((EP93XX_APB_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = 0x00000100,
.map_io = ts72xx_map_io,
.init_irq = ep93xx_init_irq,
.timer = &ep93xx_timer,
.init_machine = ts72xx_init_machine,
MACHINE_END
