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/*
* linux/arch/arm/mach-sa1100/hackkit.c
*
* Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
*
* This file contains all HackKit tweaks. Based on original work from
* Nicolas Pitre's assabet fixes
*
* 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/kernel.h>
#include <linux/sched.h>
#include <linux/tty.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/cpufreq.h>
#include <linux/serial_core.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/serial_sa1100.h>
#include "generic.h"
/**********************************************************************
* prototypes
*/
/* init funcs */
static void __init hackkit_map_io(void);
static u_int hackkit_get_mctrl(struct uart_port *port);
static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
/**********************************************************************
* global data
*/
/**********************************************************************
* static data
*/
static struct map_desc hackkit_io_desc[] __initdata = {
/* virtual physical length type */
{ 0xe8000000, 0x00000000, 0x01000000, MT_DEVICE } /* Flash bank 0 */
};
static struct sa1100_port_fns hackkit_port_fns __initdata = {
.set_mctrl = hackkit_set_mctrl,
.get_mctrl = hackkit_get_mctrl,
.pm = hackkit_uart_pm,
};
/**********************************************************************
* Static functions
*/
static void __init hackkit_map_io(void)
{
sa1100_map_io();
iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
sa1100_register_uart_fns(&hackkit_port_fns);
sa1100_register_uart(0, 1); /* com port */
sa1100_register_uart(1, 2);
sa1100_register_uart(2, 3); /* radio module */
Ser1SDCR0 |= SDCR0_SUS;
}
/**
* hackkit_uart_pm - powermgmt callback function for system 3 UART
* @port: uart port structure
* @state: pm state
* @oldstate: old pm state
*
*/
static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
/* TODO: switch on/off uart in powersave mode */
}
/*
* Note! this can be called from IRQ context.
* FIXME: No modem ctrl lines yet.
*/
static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
{
#if 0
if (port->mapbase == _Ser1UTCR0) {
u_int set = 0, clear = 0;
if (mctrl & TIOCM_RTS)
set |= PT_CTRL2_RS1_RTS;
else
clear |= PT_CTRL2_RS1_RTS;
if (mctrl & TIOCM_DTR)
set |= PT_CTRL2_RS1_DTR;
else
clear |= PT_CTRL2_RS1_DTR;
PTCTRL2_clear(clear);
PTCTRL2_set(set);
}
#endif
}
static u_int hackkit_get_mctrl(struct uart_port *port)
{
u_int ret = 0;
#if 0
u_int irqsr = PT_IRQSR;
/* need 2 reads to read current value */
irqsr = PT_IRQSR;
/* TODO: check IRQ source register for modem/com
status lines and set them correctly. */
#endif
ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
return ret;
}
static struct mtd_partition hackkit_partitions[] = {
{
.name = "BLOB",
.size = 0x00040000,
.offset = 0x00000000,
.mask_flags = MTD_WRITEABLE, /* force read-only */
}, {
.name = "config",
.size = 0x00040000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "kernel",
.size = 0x00100000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "initrd",
.size = 0x00180000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "rootfs",
.size = 0x700000,
.offset = MTDPART_OFS_APPEND,
}, {
.name = "data",
.size = MTDPART_SIZ_FULL,
.offset = MTDPART_OFS_APPEND,
}
};
static struct flash_platform_data hackkit_flash_data = {
.map_name = "cfi_probe",
.parts = hackkit_partitions,
.nr_parts = ARRAY_SIZE(hackkit_partitions),
};
static struct resource hackkit_flash_resource = {
.start = SA1100_CS0_PHYS,
.end = SA1100_CS0_PHYS + SZ_32M,
.flags = IORESOURCE_MEM,
};
static void __init hackkit_init(void)
{
sa11x0_set_flash_data(&hackkit_flash_data, &hackkit_flash_resource, 1);
}
/**********************************************************************
* Exported Functions
*/
MACHINE_START(HACKKIT, "HackKit Cpu Board")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(hackkit_map_io)
INITIRQ(sa1100_init_irq)
.timer = &sa1100_timer,
.init_machine = hackkit_init,
MACHINE_END
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