usr/src/psm/promif/ieee1275/common/prom_fb.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/promif.h>
  30 #include <sys/promimpl.h>
  31
  32 /*
  33  * Because kmdb links prom_stdout_is_framebuffer into its own
  34  * module and coherent console adds "device-type=console" for
  35  * /os-io node, we also check if the device-type is "console",
  36  * (if not "display"), so that prom_stdout_is_framebuffer still
  37  * works corrrectly after /os-io node is registered into OBP.
  38  */
  39 int
  40 prom_stdout_is_framebuffer(void)
  41 {
  42         static int remember = -1;
  43
  44         if (remember != -1)
  45                 return (remember);
  46
  47         remember = prom_devicetype((pnode_t)prom_stdout_node(),
  48                 OBP_DISPLAY);
  49
  50         if (remember == 0)
  51                 remember = prom_devicetype((pnode_t)prom_stdout_node(),
  52                         OBP_DISPLAY_CONSOLE);
  53
  54         return (remember);
  55 }
  56
  57 /*
  58  * get inverse? and inverse-screen? property,
  59  * -1 is returned if true, 0 is returned if false.
  60  */
  61 void
  62 prom_get_tem_inverses(int *inverse, int *inverse_screen)
  63 {
  64         prom_interpret(
  65             "my-self >r stdout @ is my-self "
  66             "inverse? swap l! inverse-screen? swap l! "
  67             "r> is my-self",
  68             (uintptr_t)inverse, (uintptr_t)inverse_screen, 0, 0, 0);
  69 }
  70
  71 /*
  72  * get current cursor position from the stdout handle, which
  73  * containing the instance handle of the OBP console output device.
  74  */
  75 void
  76 prom_get_tem_pos(uint32_t *row, uint32_t *col)
  77 {
  78         prom_interpret(
  79             "my-self >r stdout @ is my-self "
  80             "line# swap l! column# swap l! "
  81             "r> is my-self",
  82             (uintptr_t)row, (uintptr_t)col, 0, 0, 0);
  83 }
  84
  85
  86 /*
  87  * get the font size and the start window top of
  88  * OBP terminal emulator
  89  */
  90 void
  91 prom_get_term_font_size(int *charheight, int *window_top)
  92 {
  93         prom_interpret(
  94             "my-self >r stdout @ is my-self "
  95             "char-height swap l! window-top swap l! "
  96             "r> is my-self",
  97             (uintptr_t)charheight, (uintptr_t)window_top, 0, 0, 0);
  98
  99 }
 100
 101 /* Clear the spining "|" character and hide the PROM cursor. */
 102 void
 103 prom_hide_cursor(void)
 104 {
 105         prom_interpret(
 106             "my-self >r stdout @ is my-self "
 107             "toggle-cursor "
 108             "1 delete-characters "
 109             "r> is my-self",
 110             0, 0, 0, 0, 0);
 111 }
 112
 113 static size_t
 114 prom_atol(const char *str, int len)
 115 {
 116         size_t n = 0;
 117
 118         while (len-- && (*str != '\0')) {
 119                 n = n * 10 + (*str - '0');
 120                 str++;
 121         }
 122
 123         return (n);
 124 }
 125
 126 /*
 127  * Here we use the "screen-#columns" and "screen-#rows" settings of
 128  * PROM to help us decide the console size and cursor position. The
 129  * actual sizes of PROM's TEM and the console might be different with
 130  * those "screen-#.." settings, in cases that they are too big to
 131  * accommodate.
 132  */
 133 void
 134 prom_get_tem_size(size_t *height, size_t *width)
 135 {
 136         char buf[MAXPATHLEN];
 137         char name[16];
 138         pnode_t node;
 139         int len;
 140
 141         if ((node = prom_optionsnode()) == OBP_BADNODE)
 142                 return;
 143
 144         (void) prom_strcpy(name, "screen-#rows");
 145         if ((len = prom_getproplen(node, (caddr_t)name)) > 0) {
 146                 (void) prom_getprop(node, (caddr_t)name, (caddr_t)buf);
 147                 *height = prom_atol(buf, len);
 148         }
 149
 150         (void) prom_strcpy(name, "screen-#columns");
 151         if ((len = prom_getproplen(node, (caddr_t)name)) > 0) {
 152                 (void) prom_getprop(node, (caddr_t)name, (caddr_t)buf);
 153                 *width = prom_atol(buf, len);
 154         }
 155 }