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  1. /*
  2.  * Copyright (C) 2006 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup sparc64
  30.  * @{
  31.  */
  32. /**
  33.  * @file
  34.  * @brief   FireHose Controller (FHC) driver.
  35.  *
  36.  * Note that this driver is a result of reverse engineering
  37.  * rather than implementation of a specification. This
  38.  * is due to the fact that the FHC documentation is not
  39.  * publicly available.
  40.  */
  41.  
  42. #include <arch/drivers/fhc.h>
  43. #include <arch/mm/page.h>
  44. #include <arch/types.h>
  45. #include <typedefs.h>
  46.  
  47. #include <genarch/kbd/z8530.h>
  48.  
  49. volatile uint32_t *fhc = NULL;
  50.  
  51. #define FHC_UART_ADDR   0x1fff8808000ULL        /* hardcoded for Simics simulation */
  52.  
  53. #define FHC_UART_IMAP   0x0
  54. #define FHC_UART_ICLR   0x4
  55.  
  56. void fhc_init(void)
  57. {
  58.     fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE);
  59.  
  60.     fhc[FHC_UART_ICLR] = 0;
  61.     fhc[FHC_UART_IMAP] = 0x80000000;
  62. }
  63.  
  64. void fhc_uart_reset(void)
  65. {
  66.     fhc[FHC_UART_ICLR] = 0;
  67. }
  68.  
  69. /** @}
  70.  */
  71.