| 1 | /*
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| 2 | * Copyright (c) 2006 Ondrej Palkovsky
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| 3 | * Copyright (c) 2008 Martin Decky
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @file
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| 31 | */
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| 32 |
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| 33 | #include <sys/types.h>
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| 34 | #include <errno.h>
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| 35 | #include <sysinfo.h>
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| 36 | #include <ddi.h>
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| 37 | #include <as.h>
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| 38 | #include <align.h>
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| 39 | #include "../ctl/serial.h"
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| 40 | #include "kchar.h"
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| 41 |
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| 42 | typedef struct {
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| 43 | uint8_t *addr;
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| 44 | } kchar_t;
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| 45 |
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| 46 | static kchar_t kchar;
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| 47 |
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| 48 | static void kchar_putchar(wchar_t ch)
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| 49 | {
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| 50 | if (ascii_check(ch))
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| 51 | *kchar.addr = ch;
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| 52 | else
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| 53 | *kchar.addr = '?';
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| 54 | }
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| 55 |
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| 56 | static void kchar_control_puts(const char *str)
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| 57 | {
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| 58 | while (*str)
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| 59 | *kchar.addr = *(str++);
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| 60 | }
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| 61 |
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| 62 | int kchar_init(void)
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| 63 | {
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| 64 | sysarg_t present;
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| 65 | int rc = sysinfo_get_value("fb", &present);
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| 66 | if (rc != EOK)
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| 67 | present = false;
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| 68 |
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| 69 | if (!present)
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| 70 | return ENOENT;
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| 71 |
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| 72 | sysarg_t kind;
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| 73 | rc = sysinfo_get_value("fb.kind", &kind);
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| 74 | if (rc != EOK)
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| 75 | kind = (sysarg_t) -1;
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| 76 |
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| 77 | if (kind != 3)
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| 78 | return EINVAL;
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| 79 |
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| 80 | sysarg_t paddr;
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| 81 | rc = sysinfo_get_value("fb.address.physical", &paddr);
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| 82 | if (rc != EOK)
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| 83 | return rc;
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| 84 |
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| 85 | rc = physmem_map((void *) paddr,
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| 86 | ALIGN_UP(1, PAGE_SIZE) >> PAGE_WIDTH,
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| 87 | AS_AREA_READ | AS_AREA_WRITE, (void *) &kchar.addr);
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| 88 | if (rc != EOK)
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| 89 | return rc;
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| 90 |
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| 91 | return serial_init(kchar_putchar, kchar_control_puts);
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| 92 | }
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| 93 |
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| 94 | /** @}
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| 95 | */
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