| 1 | /*
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| 2 | * Copyright (C) 2006 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 |
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| 29 | /** @addtogroup sparc64
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <arch/drivers/scr.h>
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| 36 | #include <genarch/ofw/ofw_tree.h>
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| 37 | #include <genarch/fb/fb.h>
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| 38 | #include <arch/types.h>
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| 39 | #include <typedefs.h>
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| 40 | #include <func.h>
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| 41 | #include <align.h>
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| 42 | #include <print.h>
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| 43 |
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| 44 | #define FFB_REG_24BPP 7
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| 45 |
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| 46 | scr_type_t scr_type = SCR_UNKNOWN;
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| 47 |
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| 48 | /** Initialize screen.
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| 49 | *
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| 50 | * Traverse OpenFirmware device tree in order to find necessary
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| 51 | * info about the screen device.
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| 52 | *
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| 53 | * @param node Screen device node.
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| 54 | */
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| 55 | void scr_init(ofw_tree_node_t *node)
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| 56 | {
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| 57 | ofw_tree_property_t *prop;
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| 58 | const char *name;
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| 59 |
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| 60 | name = ofw_tree_node_name(node);
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| 61 |
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| 62 | if (strcmp(name, "SUNW,m64B") == 0)
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| 63 | scr_type = SCR_ATYFB;
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| 64 | else if (strcmp(name, "SUNW,ffb") == 0)
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| 65 | scr_type = SCR_FFB;
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| 66 |
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| 67 | if (scr_type == SCR_UNKNOWN) {
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| 68 | printf("Unknown keyboard device.\n");
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| 69 | return;
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| 70 | }
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| 71 |
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| 72 | uintptr_t fb_addr;
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| 73 | uint32_t fb_width = 0;
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| 74 | uint32_t fb_height = 0;
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| 75 | uint32_t fb_depth = 0;
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| 76 | uint32_t fb_linebytes = 0;
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| 77 | uint32_t fb_scanline = 0;
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| 78 |
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| 79 | prop = ofw_tree_getprop(node, "width");
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| 80 | if (prop && prop->value)
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| 81 | fb_width = *((uint32_t *) prop->value);
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| 82 |
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| 83 | prop = ofw_tree_getprop(node, "height");
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| 84 | if (prop && prop->value)
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| 85 | fb_height = *((uint32_t *) prop->value);
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| 86 |
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| 87 | prop = ofw_tree_getprop(node, "depth");
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| 88 | if (prop && prop->value)
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| 89 | fb_depth = *((uint32_t *) prop->value);
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| 90 |
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| 91 | prop = ofw_tree_getprop(node, "linebytes");
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| 92 | if (prop && prop->value)
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| 93 | fb_linebytes = *((uint32_t *) prop->value);
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| 94 |
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| 95 | prop = ofw_tree_getprop(node, "reg");
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| 96 | if (!prop)
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| 97 | panic("Can't find \"reg\" property.\n");
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| 98 |
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| 99 | switch (scr_type) {
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| 100 | case SCR_ATYFB:
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| 101 | if (prop->size / sizeof(ofw_pci_reg_t) < 2) {
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| 102 | printf("Too few screen registers.\n");
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| 103 | return;
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| 104 | }
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| 105 |
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| 106 | ofw_pci_reg_t *fb_reg = &((ofw_pci_reg_t *) prop->value)[1];
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| 107 | ofw_pci_reg_t abs_reg;
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| 108 |
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| 109 | if (!ofw_pci_reg_absolutize(node, fb_reg, &abs_reg)) {
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| 110 | printf("Failed to absolutize fb register.\n");
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| 111 | return;
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| 112 | }
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| 113 |
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| 114 | if (!ofw_pci_apply_ranges(node->parent, &abs_reg , &fb_addr)) {
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| 115 | printf("Failed to determine screen address.\n");
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| 116 | return;
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| 117 | }
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| 118 |
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| 119 | if (fb_depth == 24)
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| 120 | fb_scanline = fb_linebytes * 4;
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| 121 | else
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| 122 | fb_scanline = fb_linebytes * (fb_depth >> 3);
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| 123 |
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| 124 | break;
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| 125 | case SCR_FFB:
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| 126 | fb_depth = 32;
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| 127 | fb_scanline = 8192;
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| 128 |
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| 129 | ofw_upa_reg_t *reg = &((ofw_upa_reg_t *) prop->value)[FFB_REG_24BPP];
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| 130 | if (!ofw_upa_apply_ranges(node->parent, reg, &fb_addr)) {
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| 131 | printf("Failed to determine screen address.\n");
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| 132 | return;
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| 133 | }
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| 134 |
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| 135 | break;
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| 136 | default:
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| 137 | panic("Unexpected type.\n");
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| 138 | }
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| 139 |
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| 140 | fb_init(fb_addr, fb_width, fb_height, fb_depth, fb_scanline, true);
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| 141 | }
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| 142 |
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| 143 | /** @}
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| 144 | */
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