include/asm-arm/arch-lh7a40x/uncompress.h

   1 /* include/asm-arm/arch-lh7a40x/uncompress.h
   2  *
   3  *  Copyright (C) 2004 Coastal Environmental Systems
   4  *
   5  *  This program is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU General Public License
   7  *  version 2 as published by the Free Software Foundation.
   8  *
   9  */
  10
  11 #include <asm/arch/registers.h>
  12
  13 #ifndef UART_R_DATA
  14 # define UART_R_DATA    (0x00)
  15 #endif
  16 #ifndef UART_R_STATUS
  17 # define UART_R_STATUS  (0x10)
  18 #endif
  19 #define nTxRdy          (0x20)  /* Not TxReady (literally Tx FIFO full) */
  20
  21         /* Access UART with physical addresses before MMU is setup */
  22 #define UART_STATUS (*(volatile unsigned long*) (UART2_PHYS + UART_R_STATUS))
  23 #define UART_DATA   (*(volatile unsigned long*) (UART2_PHYS + UART_R_DATA))
  24
  25 static inline void putc(int ch)
  26 {
  27         while (UART_STATUS & nTxRdy)
  28                 barrier();
  29         UART_DATA = ch;
  30 }
  31
  32 static inline void flush(void)
  33 {
  34 }
  35
  36         /* NULL functions; we don't presently need them */
  37 #define arch_decomp_setup()
  38 #define arch_decomp_wdog()