arch/arm/mach-ux500/include/mach/uncompress.h

   1 /*
   2  *  Copyright (C) 2009 ST-Ericsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18 #ifndef __ASM_ARCH_UNCOMPRESS_H
  19 #define __ASM_ARCH_UNCOMPRESS_H
  20
  21 #include <asm/setup.h>
  22 #include <linux/io.h>
  23 #include <mach/hardware.h>
  24
  25 #define U8500_UART_DR           0x80007000
  26 #define U8500_UART_LCRH         0x8000702c
  27 #define U8500_UART_CR           0x80007030
  28 #define U8500_UART_FR           0x80007018
  29
  30 static void putc(const char c)
  31 {
  32         /* Do nothing if the UART is not enabled. */
  33         if (!(__raw_readb(U8500_UART_CR) & 0x1))
  34                 return;
  35
  36         if (c == '\n')
  37                 putc('\r');
  38
  39         while (__raw_readb(U8500_UART_FR) & (1 << 5))
  40                 barrier();
  41         __raw_writeb(c, U8500_UART_DR);
  42 }
  43
  44 static void flush(void)
  45 {
  46         if (!(__raw_readb(U8500_UART_CR) & 0x1))
  47                 return;
  48         while (__raw_readb(U8500_UART_FR) & (1 << 3))
  49                 barrier();
  50 }
  51
  52 static inline void arch_decomp_setup(void)
  53 {
  54 }
  55
  56 #define arch_decomp_wdog() /* nothing to do here */
  57
  58 #endif /* __ASM_ARCH_UNCOMPRESS_H */