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

   1 /*
   2  * Copyright (C) 2007 Google, Inc.
   3  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
   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
  16 #ifndef __ASM_ARCH_MSM_UNCOMPRESS_H
  17 #define __ASM_ARCH_MSM_UNCOMPRESS_H
  18
  19 #include <asm/barrier.h>
  20 #include <asm/processor.h>
  21 #include <mach/msm_iomap.h>
  22
  23 #define UART_CSR      (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08))
  24 #define UART_TF       (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x0c))
  25
  26 #define UART_DM_SR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08)))
  27 #define UART_DM_CR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x10)))
  28 #define UART_DM_ISR   (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x14)))
  29 #define UART_DM_NCHAR (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x40)))
  30 #define UART_DM_TF    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x70)))
  31
  32 static void putc(int c)
  33 {
  34 #if defined(MSM_DEBUG_UART_PHYS)
  35 #ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
  36         /*
  37          * Wait for TX_READY to be set; but skip it if we have a
  38          * TX underrun.
  39          */
  40         if (!(UART_DM_SR & 0x08))
  41                 while (!(UART_DM_ISR & 0x80))
  42                         cpu_relax();
  43
  44         UART_DM_CR = 0x300;
  45         UART_DM_NCHAR = 0x1;
  46         UART_DM_TF = c;
  47 #else
  48         while (!(UART_CSR & 0x04))
  49                 cpu_relax();
  50         UART_TF = c;
  51 #endif
  52 #endif
  53 }
  54
  55 static inline void flush(void)
  56 {
  57 }
  58
  59 static inline void arch_decomp_setup(void)
  60 {
  61 }
  62
  63 #endif