| 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 <errno.h>
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| 34 | #include <sysinfo.h>
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| 35 | #include "../ctl/serial.h"
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| 36 | #include "ski.h"
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| 37 |
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| 38 | #ifdef UARCH_ia64
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| 39 |
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| 40 | #define SKI_PUTCHAR 31
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| 41 |
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| 42 | /** Display character on ski debug console
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| 43 | *
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| 44 | * Use SSC (Simulator System Call) to
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| 45 | * display character on debug console.
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| 46 | *
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| 47 | * @param c Character to be printed.
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| 48 | *
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| 49 | */
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| 50 | static void ski_putc(const char c)
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| 51 | {
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| 52 | asm volatile (
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| 53 | "mov r15 = %0\n"
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| 54 | "mov r32 = %1\n" /* r32 is in0 */
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| 55 | "break 0x80000\n" /* modifies r8 */
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| 56 | :
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| 57 | : "i" (SKI_PUTCHAR), "r" (c)
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| 58 | : "r15", "in0", "r8"
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| 59 | );
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| 60 |
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| 61 | if (c == '\n')
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| 62 | ski_putc('\r');
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| 63 | }
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| 64 |
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| 65 | static void ski_putchar(wchar_t ch)
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| 66 | {
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| 67 | if ((ch >= 0) && (ch < 128))
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| 68 | ski_putc(ch);
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| 69 | else
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| 70 | ski_putc('?');
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| 71 | }
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| 72 |
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| 73 | static void ski_control_puts(const char *str)
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| 74 | {
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| 75 | while (*str)
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| 76 | ski_putc(*(str++));
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| 77 | }
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| 78 |
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| 79 | int ski_init(void)
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| 80 | {
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| 81 | sysarg_t present;
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| 82 | int rc = sysinfo_get_value("fb", &present);
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| 83 | if (rc != EOK)
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| 84 | present = false;
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| 85 |
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| 86 | if (!present)
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| 87 | return ENOENT;
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| 88 |
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| 89 | sysarg_t kind;
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| 90 | rc = sysinfo_get_value("fb.kind", &kind);
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| 91 | if (rc != EOK)
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| 92 | kind = (sysarg_t) -1;
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| 93 |
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| 94 | if (kind != 6)
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| 95 | return EINVAL;
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| 96 |
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| 97 | return serial_init(ski_putchar, ski_control_puts);
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| 98 | }
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| 99 |
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| 100 | #else /* UARCH_ia64 */
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| 101 |
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| 102 | int ski_init(void)
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| 103 | {
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| 104 | return ENOENT;
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| 105 | }
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| 106 |
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| 107 | #endif
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| 108 |
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| 109 | /** @}
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| 110 | */
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