/*

   * Wind River SBC8560 board specific routines
   * 

   * Maintainer: Kumar Gala

   *
   * Copyright 2004 Freescale Semiconductor Inc.
   * 
   * 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/stddef.h>
  #include <linux/kernel.h>
  #include <linux/init.h>
  #include <linux/errno.h>
  #include <linux/reboot.h>
  #include <linux/pci.h>
  #include <linux/kdev_t.h>
  #include <linux/major.h>
  #include <linux/console.h>
  #include <linux/delay.h>

  #include <linux/seq_file.h>
  #include <linux/root_dev.h>
  #include <linux/serial.h>
  #include <linux/tty.h>	/* for linux/serial_core.h */
  #include <linux/serial_core.h>

  #include <linux/serial_8250.h>

  #include <linux/initrd.h>
  #include <linux/module.h>
  #include <linux/fsl_devices.h>
  
  #include <asm/system.h>
  #include <asm/pgtable.h>
  #include <asm/page.h>
  #include <asm/atomic.h>
  #include <asm/time.h>
  #include <asm/io.h>
  #include <asm/machdep.h>

  #include <asm/open_pic.h>
  #include <asm/bootinfo.h>
  #include <asm/pci-bridge.h>
  #include <asm/mpc85xx.h>
  #include <asm/irq.h>
  #include <asm/immap_85xx.h>
  #include <asm/kgdb.h>
  #include <asm/ppc_sys.h>
  #include <mm/mmu_decl.h>
  
  #include <syslib/ppc85xx_common.h>
  #include <syslib/ppc85xx_setup.h>
  
  #ifdef CONFIG_SERIAL_8250
  static void __init
  sbc8560_early_serial_map(void)
  {
          struct uart_port uart_req;
   
          /* Setup serial port access */
          memset(&uart_req, 0, sizeof (uart_req));
  	uart_req.irq = MPC85xx_IRQ_EXT9;
  	uart_req.flags = STD_COM_FLAGS;
  	uart_req.uartclk = BASE_BAUD * 16;

          uart_req.iotype = UPIO_MEM;

          uart_req.mapbase = UARTA_ADDR;
          uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE);
  	uart_req.type = PORT_16650;
  
  #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
          gen550_init(0, &uart_req);
  #endif
   
          if (early_serial_setup(&uart_req) != 0)
                  printk("Early serial init of port 0 failed
  ");
   
          /* Assume early_serial_setup() doesn't modify uart_req */
  	uart_req.line = 1;
          uart_req.mapbase = UARTB_ADDR;
          uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
  	uart_req.irq = MPC85xx_IRQ_EXT10;
   
  #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
          gen550_init(1, &uart_req);
  #endif
   
          if (early_serial_setup(&uart_req) != 0)
                  printk("Early serial init of port 1 failed
  ");
  }
  #endif
  
  /* ************************************************************************
   *
   * Setup the architecture
   *
   */
  static void __init
  sbc8560_setup_arch(void)
  {
  	bd_t *binfo = (bd_t *) __res;
  	unsigned int freq;
  	struct gianfar_platform_data *pdata;

  	struct gianfar_mdio_data *mdata;

  
  	/* get the core frequency */
  	freq = binfo->bi_intfreq;
  
  	if (ppc_md.progress)
  		ppc_md.progress("sbc8560_setup_arch()", 0);
  
  	/* Set loops_per_jiffy to a half-way reasonable value,
  	   for use until calibrate_delay gets called. */
  	loops_per_jiffy = freq / HZ;
  
  #ifdef CONFIG_PCI
  	/* setup PCI host bridges */
  	mpc85xx_setup_hose();
  #endif
  #ifdef CONFIG_SERIAL_8250
  	sbc8560_early_serial_map();
  #endif
  #ifdef CONFIG_SERIAL_TEXT_DEBUG
  	/* Invalidate the entry we stole earlier the serial ports
  	 * should be properly mapped */ 

  	invalidate_tlbcam_entry(num_tlbcam_entries - 1);

  #endif

  	/* setup the board related info for the MDIO bus */
  	mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC85xx_MDIO);
  
  	mdata->irq[25] = MPC85xx_IRQ_EXT6;
  	mdata->irq[26] = MPC85xx_IRQ_EXT7;

  	mdata->irq[31] = PHY_POLL;

  	/* setup the board related information for the enet controllers */
  	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);

  	if (pdata) {
  		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;

  		pdata->bus_id = 0;
  		pdata->phy_id = 25;

  		memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
  	}

  
  	pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);

  	if (pdata) {
  		pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;

  		pdata->bus_id = 0;
  		pdata->phy_id = 26;

  		memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
  	}

  
  #ifdef CONFIG_BLK_DEV_INITRD
  	if (initrd_start)
  		ROOT_DEV = Root_RAM0;
  	else
  #endif
  #ifdef  CONFIG_ROOT_NFS
  		ROOT_DEV = Root_NFS;
  #else
  		ROOT_DEV = Root_HDA1;
  #endif
  }
  
  /* ************************************************************************ */
  void __init
  platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  	      unsigned long r6, unsigned long r7)
  {
  	/* parse_bootinfo must always be called first */
  	parse_bootinfo(find_bootinfo());
  
  	/*
  	 * If we were passed in a board information, copy it into the
  	 * residual data area.
  	 */
  	if (r3) {
  		memcpy((void *) __res, (void *) (r3 + KERNELBASE),
  		       sizeof (bd_t));
  	}
  
  #ifdef CONFIG_SERIAL_TEXT_DEBUG
  	/* Use the last TLB entry to map CCSRBAR to allow access to DUART regs */

  	settlbcam(num_tlbcam_entries - 1, UARTA_ADDR,

  		  UARTA_ADDR, 0x1000, _PAGE_IO, 0);
  #endif
  
  #if defined(CONFIG_BLK_DEV_INITRD)
  	/*
  	 * If the init RAM disk has been configured in, and there's a valid
  	 * starting address for it, set it up.
  	 */
  	if (r4) {
  		initrd_start = r4 + KERNELBASE;
  		initrd_end = r5 + KERNELBASE;
  	}
  #endif				/* CONFIG_BLK_DEV_INITRD */
  
  	/* Copy the kernel command line arguments to a safe place. */
  
  	if (r6) {
  		*(char *) (r7 + KERNELBASE) = 0;
  		strcpy(cmd_line, (char *) (r6 + KERNELBASE));
  	}
  
  	identify_ppc_sys_by_id(mfspr(SPRN_SVR));
  
  	/* setup the PowerPC module struct */
  	ppc_md.setup_arch = sbc8560_setup_arch;
  	ppc_md.show_cpuinfo = sbc8560_show_cpuinfo;
  
  	ppc_md.init_IRQ = sbc8560_init_IRQ;
  	ppc_md.get_irq = openpic_get_irq;
  
  	ppc_md.restart = mpc85xx_restart;
  	ppc_md.power_off = mpc85xx_power_off;
  	ppc_md.halt = mpc85xx_halt;
  
  	ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
  
  	ppc_md.time_init = NULL;
  	ppc_md.set_rtc_time = NULL;
  	ppc_md.get_rtc_time = NULL;
  	ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
  
  #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
  	ppc_md.progress = gen550_progress;
  #endif	/* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */

  #if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
  	ppc_md.early_serial_map = sbc8560_early_serial_map;
  #endif	/* CONFIG_SERIAL_8250 && CONFIG_KGDB */

  
  	if (ppc_md.progress)
  		ppc_md.progress("sbc8560_init(): exit", 0);
  }