| 1 | /*
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| 2 | * Copyright (C) 2006 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup sparc64
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| 30 | * @{
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| 31 | */
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| 32 | /**
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| 33 | * @file
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| 34 | * @brief FireHose Controller (FHC) driver.
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| 35 | *
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| 36 | * Note that this driver is a result of reverse engineering
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| 37 | * rather than implementation of a specification. This
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| 38 | * is due to the fact that the FHC documentation is not
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| 39 | * publicly available.
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| 40 | */
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| 41 |
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| 42 | #include <arch/drivers/fhc.h>
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| 43 | #include <arch/mm/page.h>
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| 44 | #include <arch/types.h>
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| 45 | #include <typedefs.h>
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| 46 |
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| 47 | #include <genarch/kbd/z8530.h>
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| 48 |
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| 49 | volatile uint32_t *fhc = NULL;
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| 50 |
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| 51 | #define FHC_UART_ADDR 0x1fff8808000ULL /* hardcoded for Simics simulation */
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| 52 |
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| 53 | #define FHC_UART_IMAP 0x0
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| 54 | #define FHC_UART_ICLR 0x4
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| 55 |
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| 56 | void fhc_init(void)
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| 57 | {
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| 58 | fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE);
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| 59 |
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| 60 | (void) fhc[FHC_UART_ICLR];
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| 61 | fhc[FHC_UART_ICLR] = 0;
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| 62 | (void) fhc[FHC_UART_IMAP];
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| 63 | fhc[FHC_UART_IMAP] = Z8530_INTRCV_DATA0; /* hardcoded for Simics simulation */
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| 64 | (void) fhc[FHC_UART_IMAP];
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| 65 | fhc[FHC_UART_IMAP] = 0x80000000; /* hardcoded for Simics simulation */
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| 66 | }
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| 67 |
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| 68 | void fhc_uart_reset(void)
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| 69 | {
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| 70 | (void) fhc[FHC_UART_ICLR];
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| 71 | fhc[FHC_UART_ICLR] = 0;
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| 72 | }
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| 73 |
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| 74 | /** @}
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| 75 | */
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