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1849 jermar 1
/*
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 * Copyright (C) 2006 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup sparc64
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 * @{
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 */
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/**
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 * @file
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 * @brief   FireHose Controller (FHC) driver.
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 *
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 * Note that this driver is a result of reverse engineering
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 * rather than implementation of a specification. This
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 * is due to the fact that the FHC documentation is not
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 * publicly available.
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 */
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#include <arch/drivers/fhc.h>
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#include <arch/mm/page.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#include <genarch/kbd/z8530.h>
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volatile uint32_t *fhc = NULL;
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#define FHC_UART_ADDR   0x1fff8808000ULL        /* hardcoded for Simics simulation */
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#define FHC_UART_IMAP   0x0
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#define FHC_UART_ICLR   0x4
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void fhc_init(void)
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{
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    fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE);
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    fhc[FHC_UART_ICLR] = 0;
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    fhc[FHC_UART_IMAP] = 0x80000000;
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}
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void fhc_uart_reset(void)
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{
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    fhc[FHC_UART_ICLR] = 0;
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}
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/** @}
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 */