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

   1 /*
   2  *  Copyright (C) 2008 STMicroelectronics
   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
  19 #ifndef __ASM_ARCH_UNCOMPRESS_H
  20 #define __ASM_ARCH_UNCOMPRESS_H
  21
  22 #include <asm/setup.h>
  23 #include <asm/io.h>
  24 #include <mach/hardware.h>
  25
  26 /* we need the constants in amba/serial.h, but it refers to amba_device */
  27 struct amba_device;
  28 #include <linux/amba/serial.h>
  29
  30 #define NOMADIK_UART_DR         0x101FB000
  31 #define NOMADIK_UART_LCRH       0x101FB02c
  32 #define NOMADIK_UART_CR         0x101FB030
  33 #define NOMADIK_UART_FR         0x101FB018
  34
  35 static void putc(const char c)
  36 {
  37         /* Do nothing if the UART is not enabled. */
  38         if (!(readb(NOMADIK_UART_CR) & UART01x_CR_UARTEN))
  39                 return;
  40
  41         if (c == '\n')
  42                 putc('\r');
  43
  44         while (readb(NOMADIK_UART_FR) & UART01x_FR_TXFF)
  45                 barrier();
  46         writeb(c, NOMADIK_UART_DR);
  47 }
  48
  49 static void flush(void)
  50 {
  51         if (!(readb(NOMADIK_UART_CR) & UART01x_CR_UARTEN))
  52                 return;
  53         while (readb(NOMADIK_UART_FR) & UART01x_FR_BUSY)
  54                 barrier();
  55 }
  56
  57 static inline void arch_decomp_setup(void)
  58 {
  59 }
  60
  61 #define arch_decomp_wdog() /* nothing to do here */
  62
  63 #endif /* __ASM_ARCH_UNCOMPRESS_H */