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

   1 /*
   2  * Marvell Armada SoC kernel uncompression UART routines
   3  *
   4  * Copyright (C) 2012 Marvell
   5  *
   6  * Lior Amsalem <alior@marvell.com>
   7  *
   8  * This file is licensed under the terms of the GNU General Public
   9  * License version 2.  This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <mach/armada-370-xp.h>
  14
  15 #define UART_THR ((volatile unsigned char *)(ARMADA_370_XP_REGS_PHYS_BASE\
  16                                                                 + 0x12000))
  17 #define UART_LSR ((volatile unsigned char *)(ARMADA_370_XP_REGS_PHYS_BASE\
  18                                                                 + 0x12014))
  19
  20 #define LSR_THRE        0x20
  21
  22 static void putc(const char c)
  23 {
  24         int i;
  25
  26         for (i = 0; i < 0x1000; i++) {
  27                 /* Transmit fifo not full? */
  28                 if (*UART_LSR & LSR_THRE)
  29                         break;
  30         }
  31
  32         *UART_THR = c;
  33 }
  34
  35 static void flush(void)
  36 {
  37 }
  38
  39 /*
  40  * nothing to do
  41  */
  42 #define arch_decomp_setup()
  43 #define arch_decomp_wdog()