/* 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();

  }