release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-kirkwood/include/mach/uncompress.h

   1 /*
   2  * arch/arm/mach-kirkwood/include/mach/uncompress.h
   3  *
   4  * This file is licensed under the terms of the GNU General Public
   5  * License version 2.  This program is licensed "as is" without any
   6  * warranty of any kind, whether express or implied.
   7  */
   8
   9 #include <linux/serial_reg.h>
  10 #include <mach/kirkwood.h>
  11
  12 #define SERIAL_BASE     ((unsigned char *)UART0_PHYS_BASE)
  13
  14 static void putc(const char c)
  15 {
  16         unsigned char *base = SERIAL_BASE;
  17         int i;
  18
  19         for (i = 0; i < 0x1000; i++) {
  20                 if (base[UART_LSR << 2] & UART_LSR_THRE)
  21                         break;
  22                 barrier();
  23         }
  24
  25         base[UART_TX << 2] = c;
  26 }
  27
  28 static void flush(void)
  29 {
  30         unsigned char *base = SERIAL_BASE;
  31         unsigned char mask;
  32         int i;
  33
  34         mask = UART_LSR_TEMT | UART_LSR_THRE;
  35
  36         for (i = 0; i < 0x1000; i++) {
  37                 if ((base[UART_LSR << 2] & mask) == mask)
  38                         break;
  39                 barrier();
  40         }
  41 }
  42
  43 /*
  44  * nothing to do
  45  */
  46 #define arch_decomp_setup()
  47 #define arch_decomp_wdog()