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uncompress.h

/*
 * arch/arm/mach-pxa/include/mach/uncompress.h
 *
 * Author:  Nicolas Pitre
 * Copyright:     (C) 2001 MontaVista Software Inc.
 *
 * 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/serial_reg.h>
#include <asm/mach-types.h>

#define FFUART_BASE     (0x40100000)
#define BTUART_BASE     (0x40200000)
#define STUART_BASE     (0x40700000)

static unsigned long uart_base;
static unsigned int uart_shift;
static unsigned int uart_is_pxa;

static inline unsigned char uart_read(int offset)
{
      return *(volatile unsigned char *)(uart_base + (offset << uart_shift));
}

static inline void uart_write(unsigned char val, int offset)
{
      *(volatile unsigned char *)(uart_base + (offset << uart_shift)) = val;
}

static inline int uart_is_enabled(void)
{
      /* assume enabled by default for non-PXA uarts */
      return uart_is_pxa ? uart_read(UART_IER) & UART_IER_UUE : 1;
}

static inline void putc(char c)
{
      if (!uart_is_enabled())
            return;

      while (!(uart_read(UART_LSR) & UART_LSR_THRE))
            barrier();

      uart_write(c, UART_TX);
}

/*
 * This does not append a newline
 */
static inline void flush(void)
{
}

static inline void arch_decomp_setup(void)
{
      /* initialize to default */
      uart_base = FFUART_BASE;
      uart_shift = 2;
      uart_is_pxa = 1;

      if (machine_is_littleton() || machine_is_intelmote2()
          || machine_is_csb726() || machine_is_stargate2()
          || machine_is_cm_x300() || machine_is_balloon3())
            uart_base = STUART_BASE;

      if (machine_is_arcom_zeus()) {
            uart_base = 0x10000000; /* nCS4 */
            uart_shift = 1;
            uart_is_pxa = 0;
      }
}

/*
 * nothing to do
 */
#define arch_decomp_wdog()

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