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| Rev | Author | Line No. | Line |
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| 426 | 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 | |||
| 586 | jermar | 29 | #include <arch/console.h> |
| 669 | jermar | 30 | #include <arch/types.h> |
| 31 | #include <typedefs.h> |
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| 883 | jermar | 32 | #include <genarch/fb/fb.h> |
| 33 | #include <arch/drivers/fb.h> |
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| 893 | jermar | 34 | #include <genarch/ofw/ofw.h> |
| 35 | #include <console/chardev.h> |
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| 36 | #include <console/console.h> |
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| 37 | #include <arch/asm.h> |
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| 38 | #include <arch/register.h> |
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| 39 | #include <proc/thread.h> |
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| 40 | #include <synch/mutex.h> |
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| 426 | jermar | 41 | |
| 893 | jermar | 42 | static void ofw_sparc64_putchar(chardev_t *d, const char ch); |
| 43 | static char ofw_sparc64_getchar(chardev_t *d); |
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| 44 | static void ofw_sparc64_suspend(chardev_t *d); |
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| 45 | static void ofw_sparc64_resume(chardev_t *d); |
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| 46 | |||
| 47 | mutex_t canwork; |
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| 48 | |||
| 49 | static volatile int ofw_console_active; |
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| 50 | |||
| 51 | static chardev_t ofw_sparc64_console; |
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| 52 | static chardev_operations_t ofw_sparc64_console_ops = { |
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| 53 | .write = ofw_sparc64_putchar, |
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| 54 | .read = ofw_sparc64_getchar, |
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| 55 | .resume = ofw_sparc64_resume, |
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| 56 | .suspend = ofw_sparc64_suspend |
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| 57 | }; |
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| 58 | |||
| 59 | /** Initialize kernel console to use OpenFirmware services. */ |
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| 60 | void ofw_sparc64_console_init(void) |
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| 586 | jermar | 61 | { |
| 893 | jermar | 62 | chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops); |
| 63 | stdin = &ofw_sparc64_console; |
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| 64 | stdout = &ofw_sparc64_console; |
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| 65 | mutex_initialize(&canwork); |
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| 66 | ofw_console_active = 1; |
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| 67 | } |
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| 68 | |||
| 69 | /** Initialize kernel console to use framebuffer and keyboard directly. */ |
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| 70 | void standalone_sparc64_console_init(void) |
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| 71 | { |
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| 72 | ofw_console_active = 0; |
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| 73 | stdin = NULL; |
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| 883 | jermar | 74 | fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8); |
| 586 | jermar | 75 | } |
| 893 | jermar | 76 | |
| 77 | /** Write one character using OpenFirmware. |
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| 78 | * |
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| 79 | * @param d Character device (ignored). |
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| 80 | * @param ch Character to be written. |
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| 81 | */ |
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| 82 | void ofw_sparc64_putchar(chardev_t *d, const char ch) |
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| 83 | { |
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| 84 | pstate_reg_t pstate; |
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| 85 | |||
| 86 | /* |
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| 87 | * 32-bit OpenFirmware depends on PSTATE.AM bit set. |
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| 88 | */ |
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| 89 | pstate.value = pstate_read(); |
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| 90 | pstate.am = true; |
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| 91 | pstate_write(pstate.value); |
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| 92 | |||
| 93 | if (ch == '\n') |
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| 94 | ofw_putchar('\r'); |
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| 95 | ofw_putchar(ch); |
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| 96 | |||
| 97 | pstate.am = false; |
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| 98 | pstate_write(pstate.value); |
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| 99 | } |
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| 100 | |||
| 101 | /** Read one character using OpenFirmware. |
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| 102 | * |
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| 103 | * The call is non-blocking. |
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| 104 | * |
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| 105 | * @param d Character device (ignored). |
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| 106 | * @return Character read or zero if no character was read. |
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| 107 | */ |
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| 108 | char ofw_sparc64_getchar(chardev_t *d) |
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| 109 | { |
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| 110 | char ch; |
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| 111 | pstate_reg_t pstate; |
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| 112 | |||
| 113 | /* |
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| 114 | * 32-bit OpenFirmware depends on PSTATE.AM bit set. |
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| 115 | */ |
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| 116 | pstate.value = pstate_read(); |
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| 117 | pstate.am = true; |
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| 118 | pstate_write(pstate.value); |
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| 119 | |||
| 120 | ch = ofw_getchar(); |
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| 121 | |||
| 122 | pstate.am = false; |
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| 123 | pstate_write(pstate.value); |
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| 124 | |||
| 125 | return ch; |
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| 126 | } |
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| 127 | |||
| 128 | void ofw_sparc64_suspend(chardev_t *d) |
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| 129 | { |
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| 130 | mutex_lock(&canwork); |
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| 131 | } |
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| 132 | |||
| 133 | void ofw_sparc64_resume(chardev_t *d) |
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| 134 | { |
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| 135 | mutex_unlock(&canwork); |
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| 136 | } |
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| 137 | |||
| 138 | /** Kernel thread for pushing characters read from OFW to input buffer. |
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| 139 | * |
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| 140 | * @param arg Ignored. |
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| 141 | */ |
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| 142 | void kofwinput(void *arg) |
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| 143 | { |
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| 144 | |||
| 145 | while (ofw_console_active) { |
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| 146 | char ch = 0; |
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| 147 | |||
| 148 | mutex_lock(&canwork); |
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| 149 | mutex_unlock(&canwork); |
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| 150 | |||
| 151 | ch = ofw_sparc64_getchar(NULL); |
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| 152 | if (ch) { |
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| 153 | if (ch == '\r') |
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| 154 | ch = '\n'; |
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| 155 | chardev_push_character(&ofw_sparc64_console, ch); |
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| 156 | } |
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| 157 | thread_usleep(25000); |
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| 158 | } |
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| 159 | } |