arch/arm/mach-orion5x/include/mach/uncompress.h

   1 /*
   2  * arch/arm/mach-orion5x/include/mach/uncompress.h
   3  *
   4  * Tzachi Perelstein <tzachi@marvell.com>
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <linux/serial_reg.h>
  12 #include <mach/orion5x.h>
  13
  14 #define SERIAL_BASE     ((unsigned char *)UART0_PHYS_BASE)
  15
  16 static void putc(const char c)
  17 {
  18         unsigned char *base = SERIAL_BASE;
  19         int i;
  20
  21         for (i = 0; i < 0x1000; i++) {
  22                 if (base[UART_LSR << 2] & UART_LSR_THRE)
  23                         break;
  24                 barrier();
  25         }
  26
  27         base[UART_TX << 2] = c;
  28 }
  29
  30 static void flush(void)
  31 {
  32         unsigned char *base = SERIAL_BASE;
  33         unsigned char mask;
  34         int i;
  35
  36         mask = UART_LSR_TEMT | UART_LSR_THRE;
  37
  38         for (i = 0; i < 0x1000; i++) {
  39                 if ((base[UART_LSR << 2] & mask) == mask)
  40                         break;
  41                 barrier();
  42         }
  43 }
  44
  45 /*
  46  * nothing to do
  47  */
  48 #define arch_decomp_setup()