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

   1 /* arch/arm/mach-zynq/include/mach/uncompress.h
   2  *
   3  *  Copyright (C) 2011 Xilinx
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   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
  15 #ifndef __MACH_UNCOMPRESS_H__
  16 #define __MACH_UNCOMPRESS_H__
  17
  18 #include <linux/io.h>
  19 #include <asm/processor.h>
  20 #include <mach/zynq_soc.h>
  21 #include <mach/uart.h>
  22
  23 void arch_decomp_setup(void)
  24 {
  25 }
  26
  27 static inline void flush(void)
  28 {
  29         /*
  30          * Wait while the FIFO is not empty
  31          */
  32         while (!(__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
  33                 UART_SR_TXEMPTY))
  34                 cpu_relax();
  35 }
  36
  37 #define arch_decomp_wdog()
  38
  39 static void putc(char ch)
  40 {
  41         /*
  42          * Wait for room in the FIFO, then write the char into the FIFO
  43          */
  44         while (__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
  45                 UART_SR_TXFULL)
  46                 cpu_relax();
  47
  48         __raw_writel(ch, IOMEM(LL_UART_PADDR + UART_FIFO_OFFSET));
  49 }
  50
  51 #endif