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| Rev | Author | Line No. | Line |
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| 78 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 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 | |||
| 29 | #include <arch/ski/ski.h> |
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| 577 | palkovsky | 30 | #include <console/console.h> |
| 31 | #include <console/chardev.h> |
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| 1507 | vana | 32 | #include <arch/interrupt.h> |
| 33 | #include <sysinfo/sysinfo.h> |
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| 78 | jermar | 34 | |
| 1507 | vana | 35 | chardev_t ski_console; |
| 36 | chardev_t ski_uconsole; |
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| 577 | palkovsky | 37 | static bool kb_disable; |
| 1507 | vana | 38 | int kbd_uspace=0; |
| 78 | jermar | 39 | |
| 586 | jermar | 40 | static void ski_putchar(chardev_t *d, const char ch); |
| 583 | jermar | 41 | static __s32 ski_getchar(void); |
| 42 | |||
| 79 | jermar | 43 | /** Display character on debug console |
| 44 | * |
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| 45 | * Use SSC (Simulator System Call) to |
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| 46 | * display character on debug console. |
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| 47 | * |
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| 583 | jermar | 48 | * @param d Character device. |
| 49 | * @param ch Character to be printed. |
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| 79 | jermar | 50 | */ |
| 586 | jermar | 51 | void ski_putchar(chardev_t *d, const char ch) |
| 78 | jermar | 52 | { |
| 892 | vana | 53 | __asm__ volatile ( |
| 78 | jermar | 54 | "mov r15=%0\n" |
| 55 | "mov r32=%1\n" /* r32 is in0 */ |
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| 56 | "break 0x80000\n" /* modifies r8 */ |
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| 57 | : |
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| 58 | : "i" (SKI_PUTCHAR), "r" (ch) |
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| 59 | : "r15", "in0", "r8" |
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| 60 | ); |
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| 61 | |||
| 583 | jermar | 62 | if (ch == '\n') |
| 586 | jermar | 63 | ski_putchar(d, '\r'); |
| 78 | jermar | 64 | } |
| 519 | vana | 65 | |
| 523 | jermar | 66 | /** Ask debug console if a key was pressed. |
| 519 | vana | 67 | * |
| 68 | * Use SSC (Simulator System Call) to |
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| 69 | * get character from debug console. |
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| 523 | jermar | 70 | * |
| 71 | * This call is non-blocking. |
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| 72 | * |
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| 73 | * @return ASCII code of pressed key or 0 if no key pressed. |
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| 519 | vana | 74 | */ |
| 75 | __s32 ski_getchar(void) |
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| 76 | { |
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| 77 | __u64 ch; |
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| 78 | |||
| 892 | vana | 79 | __asm__ volatile ( |
| 584 | jermar | 80 | "mov r15=%1\n" |
| 519 | vana | 81 | "break 0x80000;;\n" /* modifies r8 */ |
| 584 | jermar | 82 | "mov %0=r8;;\n" |
| 519 | vana | 83 | |
| 584 | jermar | 84 | : "=r" (ch) |
| 85 | : "i" (SKI_GETCHAR) |
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| 519 | vana | 86 | : "r15", "r8" |
| 87 | ); |
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| 88 | |||
| 584 | jermar | 89 | return (__s32) ch; |
| 519 | vana | 90 | } |
| 577 | palkovsky | 91 | |
| 892 | vana | 92 | /** |
| 893 | jermar | 93 | * This is a blocking wrapper for ski_getchar(). |
| 94 | * To be used when the kernel crashes. |
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| 95 | */ |
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| 892 | vana | 96 | static char ski_getchar_blocking(chardev_t *d) |
| 97 | { |
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| 893 | jermar | 98 | int ch; |
| 99 | |||
| 100 | while(!(ch=ski_getchar())) |
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| 101 | ; |
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| 102 | if(ch == '\r') |
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| 103 | ch = '\n'; |
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| 892 | vana | 104 | return (char) ch; |
| 105 | } |
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| 106 | |||
| 577 | palkovsky | 107 | /** Ask keyboard if a key was pressed. */ |
| 108 | void poll_keyboard(void) |
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| 109 | { |
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| 110 | char ch; |
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| 1570 | vana | 111 | static char last; |
| 577 | palkovsky | 112 | |
| 113 | if (kb_disable) |
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| 114 | return; |
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| 115 | |||
| 116 | ch = ski_getchar(); |
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| 117 | if(ch == '\r') |
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| 118 | ch = '\n'; |
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| 1507 | vana | 119 | if (ch){ |
| 120 | if(kbd_uspace){ |
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| 121 | chardev_push_character(&ski_uconsole, ch); |
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| 122 | virtual_interrupt(IRQ_KBD,NULL); |
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| 123 | } |
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| 124 | else { |
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| 125 | chardev_push_character(&ski_console, ch); |
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| 1570 | vana | 126 | } |
| 127 | last = ch; |
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| 128 | return; |
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| 129 | } |
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| 1507 | vana | 130 | |
| 1570 | vana | 131 | if (last){ |
| 132 | if(kbd_uspace){ |
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| 133 | chardev_push_character(&ski_uconsole, 0); |
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| 134 | virtual_interrupt(IRQ_KBD,NULL); |
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| 135 | } |
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| 136 | else { |
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| 1507 | vana | 137 | } |
| 1570 | vana | 138 | last = 0; |
| 1507 | vana | 139 | } |
| 1570 | vana | 140 | |
| 577 | palkovsky | 141 | } |
| 142 | |||
| 143 | /* Called from getc(). */ |
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| 583 | jermar | 144 | static void ski_kb_enable(chardev_t *d) |
| 577 | palkovsky | 145 | { |
| 146 | kb_disable = false; |
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| 147 | } |
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| 148 | |||
| 149 | /* Called from getc(). */ |
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| 150 | static void ski_kb_disable(chardev_t *d) |
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| 151 | { |
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| 152 | kb_disable = true; |
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| 153 | } |
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| 154 | |||
| 155 | |||
| 156 | static chardev_operations_t ski_ops = { |
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| 157 | .resume = ski_kb_enable, |
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| 158 | .suspend = ski_kb_disable, |
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| 892 | vana | 159 | .write = ski_putchar, |
| 160 | .read = ski_getchar_blocking |
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| 577 | palkovsky | 161 | }; |
| 162 | |||
| 163 | |||
| 164 | /** Initialize debug console |
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| 165 | * |
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| 166 | * Issue SSC (Simulator System Call) to |
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| 167 | * to open debug console. |
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| 168 | */ |
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| 169 | void ski_init_console(void) |
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| 170 | { |
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| 892 | vana | 171 | __asm__ volatile ( |
| 577 | palkovsky | 172 | "mov r15=%0\n" |
| 173 | "break 0x80000\n" |
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| 174 | : |
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| 175 | : "i" (SKI_INIT_CONSOLE) |
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| 176 | : "r15", "r8" |
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| 177 | ); |
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| 178 | |||
| 179 | chardev_initialize("ski_console", &ski_console, &ski_ops); |
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| 1507 | vana | 180 | chardev_initialize("ski_uconsole", &ski_uconsole, &ski_ops); |
| 577 | palkovsky | 181 | stdin = &ski_console; |
| 182 | stdout = &ski_console; |
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| 1507 | vana | 183 | |
| 577 | palkovsky | 184 | } |
| 1507 | vana | 185 | /** Setup console sysinfo (i.e. Keyboard IRQ) |
| 186 | * |
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| 187 | * Because sysinfo neads memory allocation/dealocation |
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| 188 | * this functions should be called separetely from init. |
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| 189 | * |
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| 190 | */ |
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| 191 | void ski_set_console_sysinfo(void) |
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| 192 | { |
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| 193 | sysinfo_set_item_val("kbd",NULL,true); |
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| 194 | sysinfo_set_item_val("kbd.irq",NULL,IRQ_KBD); |
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| 195 | } |