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/* ASB2364 initialisation
*
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* 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/param.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <asm/intctl-regs.h>
#include <asm/serial-regs.h>
#include <unit/fpga-regs.h>
#include <unit/serial.h>
#include <unit/smsc911x.h>
#define TTYS0_SERIAL_IER __SYSREG(SERIAL_PORT0_BASE_ADDRESS + UART_IER * 2, u8)
#define LAN_IRQ_CFG __SYSREG(SMSC911X_BASE + 0x54, u32)
#define LAN_INT_EN __SYSREG(SMSC911X_BASE + 0x5c, u32)
/*
* initialise some of the unit hardware before gdbstub is set up
*/
asmlinkage void __init unit_init(void)
{
/* Make sure we aren't going to get unexpected interrupts */
TTYS0_SERIAL_IER = 0;
SC0RXICR = 0;
SC0TXICR = 0;
SC1RXICR = 0;
SC1TXICR = 0;
SC2RXICR = 0;
SC2TXICR = 0;
/* Attempt to reset the FPGA attached peripherals */
ASB2364_FPGA_REG_RESET_LAN = 0x0000;
SyncExBus();
ASB2364_FPGA_REG_RESET_UART = 0x0000;
SyncExBus();
ASB2364_FPGA_REG_RESET_I2C = 0x0000;
SyncExBus();
ASB2364_FPGA_REG_RESET_USB = 0x0000;
SyncExBus();
ASB2364_FPGA_REG_RESET_AV = 0x0000;
SyncExBus();
/* set up the external interrupts */
/* XIRQ[0]: NAND RXBY */
/* SET_XIRQ_TRIGGER(0, XIRQ_TRIGGER_LOWLEVEL); */
/* XIRQ[1]: LAN, UART, I2C, USB, PCI, FPGA */
SET_XIRQ_TRIGGER(1, XIRQ_TRIGGER_LOWLEVEL);
/* XIRQ[2]: Extend Slot 1-9 */
/* SET_XIRQ_TRIGGER(2, XIRQ_TRIGGER_LOWLEVEL); */
#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL) && \
defined(CONFIG_ETHERNET_IRQ_LEVEL) && \
(CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL)
# error CONFIG_EXT_SERIAL_IRQ_LEVEL != CONFIG_ETHERNET_IRQ_LEVEL
#endif
#if defined(CONFIG_EXT_SERIAL_IRQ_LEVEL)
set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_EXT_SERIAL_IRQ_LEVEL));
#elif defined(CONFIG_ETHERNET_IRQ_LEVEL)
set_intr_level(XIRQ1, NUM2GxICR_LEVEL(CONFIG_ETHERNET_IRQ_LEVEL));
#endif
}
/*
* initialise the rest of the unit hardware after gdbstub is ready
*/
asmlinkage void __init unit_setup(void)
{
/* Release the reset on the SMSC911X so that it is ready by the time we
* need it */
ASB2364_FPGA_REG_RESET_LAN = 0x0001;
SyncExBus();
ASB2364_FPGA_REG_RESET_UART = 0x0001;
SyncExBus();
ASB2364_FPGA_REG_RESET_I2C = 0x0001;
SyncExBus();
ASB2364_FPGA_REG_RESET_USB = 0x0001;
SyncExBus();
ASB2364_FPGA_REG_RESET_AV = 0x0001;
SyncExBus();
/* Make sure the ethernet chipset isn't going to give us an interrupt
* storm from stuff it was doing pre-reset */
LAN_IRQ_CFG = 0;
LAN_INT_EN = 0;
}
/*
* initialise the external interrupts used by a unit of this type
*/
void __init unit_init_IRQ(void)
{
unsigned int extnum;
for (extnum = 0 ; extnum < NR_XIRQS ; extnum++) {
switch (GET_XIRQ_TRIGGER(extnum)) {
/* LEVEL triggered interrupts should be made
* post-ACK'able as they hold their lines until
* serviced
*/
case XIRQ_TRIGGER_HILEVEL:
case XIRQ_TRIGGER_LOWLEVEL:
mn10300_set_lateack_irq_type(XIRQ2IRQ(extnum));
break;
default:
break;
}
}
#define IRQCTL __SYSREG(0xd5000090, u32)
IRQCTL |= 0x02;
irq_fpga_init();
}
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