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/processor.h>
  20 #include <mach/msm_iomap.h>
  21
  22 #define UART_CSR      (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08))
  23 #define UART_TF       (*(volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x0c))
  24
  25 #define UART_DM_SR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x08)))
  26 #define UART_DM_CR    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x10)))
  27 #define UART_DM_ISR   (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x14)))
  28 #define UART_DM_NCHAR (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x40)))
  29 #define UART_DM_TF    (*((volatile uint32_t *)(MSM_DEBUG_UART_PHYS + 0x70)))
  30
  31 static void putc(int c)
  32 {
  33 #if defined(MSM_DEBUG_UART_PHYS)
  34 #ifdef CONFIG_MSM_HAS_DEBUG_UART_HS
  35         /*
  36          * Wait for TX_READY to be set; but skip it if we have a
  37          * TX underrun.
  38          */
  39         if (UART_DM_SR & 0x08)
  40                 while (!(UART_DM_ISR & 0x80))
  41                         cpu_relax();
  42
  43         UART_DM_CR = 0x300;
  44         UART_DM_NCHAR = 0x1;
  45         UART_DM_TF = c;
  46 #else
  47         while (!(UART_CSR & 0x04))
  48                 cpu_relax();
  49         UART_TF = c;
  50 #endif
  51 #endif
  52 }
  53
  54 static inline void flush(void)
  55 {
  56 }
  57
  58 static inline void arch_decomp_setup(void)
  59 {
  60 }
  61
  62 static inline void arch_decomp_wdog(void)
  63 {
  64 }
  65
  66 #endif