include/asm-arm/arch-at91/uncompress.h

   1 /*
   2  * include/asm-arm/arch-at91/uncompress.h
   3  *
   4  *  Copyright (C) 2003 SAN People
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef __ASM_ARCH_UNCOMPRESS_H
  22 #define __ASM_ARCH_UNCOMPRESS_H
  23
  24 #include <asm/io.h>
  25 #include <asm/arch/at91_dbgu.h>
  26
  27 /*
  28  * The following code assumes the serial port has already been
  29  * initialized by the bootloader.  If you didn't setup a port in
  30  * your bootloader then nothing will appear (which might be desired).
  31  *
  32  * This does not append a newline
  33  */
  34 static void putc(int c)
  35 {
  36 #ifdef AT91_DBGU
  37         void __iomem *sys = (void __iomem *) AT91_BASE_SYS;     /* physical address */
  38
  39         while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXRDY))
  40                 barrier();
  41         __raw_writel(c, sys + AT91_DBGU_THR);
  42 #endif
  43 }
  44
  45 static inline void flush(void)
  46 {
  47 #ifdef AT91_DBGU
  48         void __iomem *sys = (void __iomem *) AT91_BASE_SYS;     /* physical address */
  49
  50         /* wait for transmission to complete */
  51         while (!(__raw_readl(sys + AT91_DBGU_SR) & AT91_DBGU_TXEMPTY))
  52                 barrier();
  53 #endif
  54 }
  55
  56 #define arch_decomp_setup()
  57
  58 #define arch_decomp_wdog()
  59
  60 #endif