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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief FireHose Controller (FHC) driver. |
34 | * @brief FireHose Controller (FHC) driver. |
35 | * |
35 | * |
36 | * Note that this driver is a result of reverse engineering |
36 | * Note that this driver is a result of reverse engineering |
37 | * rather than implementation of a specification. This |
37 | * rather than implementation of a specification. This |
38 | * is due to the fact that the FHC documentation is not |
38 | * is due to the fact that the FHC documentation is not |
39 | * publicly available. |
39 | * publicly available. |
40 | */ |
40 | */ |
41 | 41 | ||
42 | #include <arch/drivers/fhc.h> |
42 | #include <arch/drivers/fhc.h> |
43 | #include <arch/mm/page.h> |
43 | #include <arch/mm/page.h> |
44 | #include <arch/types.h> |
44 | #include <arch/types.h> |
45 | #include <typedefs.h> |
45 | #include <typedefs.h> |
46 | 46 | ||
47 | #include <genarch/kbd/z8530.h> |
47 | #include <genarch/kbd/z8530.h> |
48 | 48 | ||
49 | volatile uint32_t *fhc = NULL; |
49 | volatile uint32_t *fhc = NULL; |
50 | 50 | ||
51 | #define FHC_UART_ADDR 0x1fff8808000ULL /* hardcoded for Simics simulation */ |
51 | #define FHC_UART_ADDR 0x1fff8808000ULL /* hardcoded for Simics simulation */ |
52 | 52 | ||
53 | #define FHC_UART_IMAP 0x0 |
53 | #define FHC_UART_IMAP 0x0 |
54 | #define FHC_UART_ICLR 0x4 |
54 | #define FHC_UART_ICLR 0x4 |
55 | 55 | ||
56 | void fhc_init(void) |
56 | void fhc_init(void) |
57 | { |
57 | { |
58 | fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE); |
58 | fhc = (void *) hw_map(FHC_UART_ADDR, PAGE_SIZE); |
59 | 59 | ||
60 | (void) fhc[FHC_UART_ICLR]; |
- | |
61 | fhc[FHC_UART_ICLR] = 0; |
60 | fhc[FHC_UART_ICLR] = 0; |
62 | (void) fhc[FHC_UART_IMAP]; |
- | |
63 | fhc[FHC_UART_IMAP] = Z8530_INTRCV_DATA0; /* hardcoded for Simics simulation */ |
- | |
64 | (void) fhc[FHC_UART_IMAP]; |
61 | fhc[FHC_UART_IMAP] = 0x80000000; |
65 | fhc[FHC_UART_IMAP] = 0x80000000; /* hardcoded for Simics simulation */ |
- | |
66 | } |
62 | } |
67 | 63 | ||
68 | void fhc_uart_reset(void) |
64 | void fhc_uart_reset(void) |
69 | { |
65 | { |
70 | (void) fhc[FHC_UART_ICLR]; |
- | |
71 | fhc[FHC_UART_ICLR] = 0; |
66 | fhc[FHC_UART_ICLR] = 0; |
72 | } |
67 | } |
73 | 68 | ||
74 | /** @} |
69 | /** @} |
75 | */ |
70 | */ |
76 | 71 |