root / hw / pl110.c @ a8b7063b
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1 | 5fafdf24 | ths | /*
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2 | bdd5003a | pbrook | * Arm PrimeCell PL110 Color LCD Controller
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3 | bdd5003a | pbrook | *
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4 | 2e9bdce5 | Paul Brook | * Copyright (c) 2005-2009 CodeSourcery.
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5 | bdd5003a | pbrook | * Written by Paul Brook
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6 | bdd5003a | pbrook | *
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7 | bdd5003a | pbrook | * This code is licenced under the GNU LGPL
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8 | bdd5003a | pbrook | */
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9 | bdd5003a | pbrook | |
10 | 2e9bdce5 | Paul Brook | #include "sysbus.h" |
11 | 87ecb68b | pbrook | #include "console.h" |
12 | 714fa308 | pbrook | #include "framebuffer.h" |
13 | bdd5003a | pbrook | |
14 | bdd5003a | pbrook | #define PL110_CR_EN 0x001 |
15 | e9c05b42 | balrog | #define PL110_CR_BGR 0x100 |
16 | bdd5003a | pbrook | #define PL110_CR_BEBO 0x200 |
17 | bdd5003a | pbrook | #define PL110_CR_BEPO 0x400 |
18 | bdd5003a | pbrook | #define PL110_CR_PWR 0x800 |
19 | bdd5003a | pbrook | |
20 | bdd5003a | pbrook | enum pl110_bppmode
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21 | bdd5003a | pbrook | { |
22 | bdd5003a | pbrook | BPP_1, |
23 | bdd5003a | pbrook | BPP_2, |
24 | bdd5003a | pbrook | BPP_4, |
25 | bdd5003a | pbrook | BPP_8, |
26 | bdd5003a | pbrook | BPP_16, |
27 | bdd5003a | pbrook | BPP_32 |
28 | bdd5003a | pbrook | }; |
29 | bdd5003a | pbrook | |
30 | bdd5003a | pbrook | typedef struct { |
31 | 2e9bdce5 | Paul Brook | SysBusDevice busdev; |
32 | bdd5003a | pbrook | DisplayState *ds; |
33 | c60e08d9 | pbrook | |
34 | cdbdb648 | pbrook | /* The Versatile/PB uses a slightly modified PL110 controller. */
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35 | cdbdb648 | pbrook | int versatile;
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36 | bdd5003a | pbrook | uint32_t timing[4];
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37 | bdd5003a | pbrook | uint32_t cr; |
38 | bdd5003a | pbrook | uint32_t upbase; |
39 | bdd5003a | pbrook | uint32_t lpbase; |
40 | bdd5003a | pbrook | uint32_t int_status; |
41 | bdd5003a | pbrook | uint32_t int_mask; |
42 | bdd5003a | pbrook | int cols;
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43 | bdd5003a | pbrook | int rows;
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44 | bdd5003a | pbrook | enum pl110_bppmode bpp;
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45 | bdd5003a | pbrook | int invalidate;
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46 | bdd5003a | pbrook | uint32_t pallette[256];
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47 | bdd5003a | pbrook | uint32_t raw_pallette[128];
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48 | d537cf6c | pbrook | qemu_irq irq; |
49 | bdd5003a | pbrook | } pl110_state; |
50 | bdd5003a | pbrook | |
51 | bdd5003a | pbrook | static const unsigned char pl110_id[] = |
52 | bdd5003a | pbrook | { 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 }; |
53 | bdd5003a | pbrook | |
54 | cdbdb648 | pbrook | /* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
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55 | cdbdb648 | pbrook | has a different ID. However Linux only looks for the normal ID. */
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56 | cdbdb648 | pbrook | #if 0
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57 | cdbdb648 | pbrook | static const unsigned char pl110_versatile_id[] =
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58 | cdbdb648 | pbrook | { 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
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59 | cdbdb648 | pbrook | #else
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60 | cdbdb648 | pbrook | #define pl110_versatile_id pl110_id
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61 | cdbdb648 | pbrook | #endif
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62 | cdbdb648 | pbrook | |
63 | 602dafcf | pbrook | #include "pixel_ops.h" |
64 | bdd5003a | pbrook | |
65 | bdd5003a | pbrook | #define BITS 8 |
66 | bdd5003a | pbrook | #include "pl110_template.h" |
67 | bdd5003a | pbrook | #define BITS 15 |
68 | bdd5003a | pbrook | #include "pl110_template.h" |
69 | bdd5003a | pbrook | #define BITS 16 |
70 | bdd5003a | pbrook | #include "pl110_template.h" |
71 | bdd5003a | pbrook | #define BITS 24 |
72 | bdd5003a | pbrook | #include "pl110_template.h" |
73 | bdd5003a | pbrook | #define BITS 32 |
74 | bdd5003a | pbrook | #include "pl110_template.h" |
75 | bdd5003a | pbrook | |
76 | bdd5003a | pbrook | static int pl110_enabled(pl110_state *s) |
77 | bdd5003a | pbrook | { |
78 | bdd5003a | pbrook | return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
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79 | bdd5003a | pbrook | } |
80 | bdd5003a | pbrook | |
81 | 95219897 | pbrook | static void pl110_update_display(void *opaque) |
82 | bdd5003a | pbrook | { |
83 | bdd5003a | pbrook | pl110_state *s = (pl110_state *)opaque; |
84 | bdd5003a | pbrook | drawfn* fntable; |
85 | bdd5003a | pbrook | drawfn fn; |
86 | bdd5003a | pbrook | int dest_width;
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87 | bdd5003a | pbrook | int src_width;
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88 | e9c05b42 | balrog | int bpp_offset;
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89 | 714fa308 | pbrook | int first;
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90 | 714fa308 | pbrook | int last;
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91 | bdd5003a | pbrook | |
92 | bdd5003a | pbrook | if (!pl110_enabled(s))
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93 | bdd5003a | pbrook | return;
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94 | 3b46e624 | ths | |
95 | 0e1f5a0c | aliguori | switch (ds_get_bits_per_pixel(s->ds)) {
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96 | af2f6733 | pbrook | case 0: |
97 | af2f6733 | pbrook | return;
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98 | bdd5003a | pbrook | case 8: |
99 | bdd5003a | pbrook | fntable = pl110_draw_fn_8; |
100 | bdd5003a | pbrook | dest_width = 1;
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101 | bdd5003a | pbrook | break;
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102 | bdd5003a | pbrook | case 15: |
103 | bdd5003a | pbrook | fntable = pl110_draw_fn_15; |
104 | bdd5003a | pbrook | dest_width = 2;
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105 | bdd5003a | pbrook | break;
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106 | bdd5003a | pbrook | case 16: |
107 | bdd5003a | pbrook | fntable = pl110_draw_fn_16; |
108 | bdd5003a | pbrook | dest_width = 2;
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109 | bdd5003a | pbrook | break;
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110 | bdd5003a | pbrook | case 24: |
111 | bdd5003a | pbrook | fntable = pl110_draw_fn_24; |
112 | bdd5003a | pbrook | dest_width = 3;
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113 | bdd5003a | pbrook | break;
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114 | bdd5003a | pbrook | case 32: |
115 | bdd5003a | pbrook | fntable = pl110_draw_fn_32; |
116 | bdd5003a | pbrook | dest_width = 4;
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117 | bdd5003a | pbrook | break;
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118 | bdd5003a | pbrook | default:
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119 | af2f6733 | pbrook | fprintf(stderr, "pl110: Bad color depth\n");
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120 | bdd5003a | pbrook | exit(1);
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121 | bdd5003a | pbrook | } |
122 | e9c05b42 | balrog | if (s->cr & PL110_CR_BGR)
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123 | e9c05b42 | balrog | bpp_offset = 0;
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124 | e9c05b42 | balrog | else
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125 | e9c05b42 | balrog | bpp_offset = 18;
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126 | e9c05b42 | balrog | |
127 | bdd5003a | pbrook | if (s->cr & PL110_CR_BEBO)
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128 | e9c05b42 | balrog | fn = fntable[s->bpp + 6 + bpp_offset];
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129 | bdd5003a | pbrook | else if (s->cr & PL110_CR_BEPO) |
130 | e9c05b42 | balrog | fn = fntable[s->bpp + 12 + bpp_offset];
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131 | bdd5003a | pbrook | else
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132 | e9c05b42 | balrog | fn = fntable[s->bpp + bpp_offset]; |
133 | 3b46e624 | ths | |
134 | bdd5003a | pbrook | src_width = s->cols; |
135 | bdd5003a | pbrook | switch (s->bpp) {
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136 | bdd5003a | pbrook | case BPP_1:
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137 | bdd5003a | pbrook | src_width >>= 3;
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138 | bdd5003a | pbrook | break;
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139 | bdd5003a | pbrook | case BPP_2:
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140 | bdd5003a | pbrook | src_width >>= 2;
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141 | bdd5003a | pbrook | break;
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142 | bdd5003a | pbrook | case BPP_4:
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143 | bdd5003a | pbrook | src_width >>= 1;
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144 | bdd5003a | pbrook | break;
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145 | bdd5003a | pbrook | case BPP_8:
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146 | bdd5003a | pbrook | break;
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147 | bdd5003a | pbrook | case BPP_16:
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148 | bdd5003a | pbrook | src_width <<= 1;
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149 | bdd5003a | pbrook | break;
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150 | bdd5003a | pbrook | case BPP_32:
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151 | bdd5003a | pbrook | src_width <<= 2;
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152 | bdd5003a | pbrook | break;
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153 | bdd5003a | pbrook | } |
154 | bdd5003a | pbrook | dest_width *= s->cols; |
155 | 714fa308 | pbrook | first = 0;
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156 | 714fa308 | pbrook | framebuffer_update_display(s->ds, |
157 | 714fa308 | pbrook | s->upbase, s->cols, s->rows, |
158 | 714fa308 | pbrook | src_width, dest_width, 0,
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159 | 714fa308 | pbrook | s->invalidate, |
160 | 714fa308 | pbrook | fn, s->pallette, |
161 | 714fa308 | pbrook | &first, &last); |
162 | 714fa308 | pbrook | if (first >= 0) { |
163 | 714fa308 | pbrook | dpy_update(s->ds, 0, first, s->cols, last - first + 1); |
164 | bdd5003a | pbrook | } |
165 | bdd5003a | pbrook | s->invalidate = 0;
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166 | bdd5003a | pbrook | } |
167 | bdd5003a | pbrook | |
168 | 95219897 | pbrook | static void pl110_invalidate_display(void * opaque) |
169 | bdd5003a | pbrook | { |
170 | bdd5003a | pbrook | pl110_state *s = (pl110_state *)opaque; |
171 | bdd5003a | pbrook | s->invalidate = 1;
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172 | bdd5003a | pbrook | } |
173 | bdd5003a | pbrook | |
174 | bdd5003a | pbrook | static void pl110_update_pallette(pl110_state *s, int n) |
175 | bdd5003a | pbrook | { |
176 | bdd5003a | pbrook | int i;
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177 | bdd5003a | pbrook | uint32_t raw; |
178 | bdd5003a | pbrook | unsigned int r, g, b; |
179 | bdd5003a | pbrook | |
180 | bdd5003a | pbrook | raw = s->raw_pallette[n]; |
181 | bdd5003a | pbrook | n <<= 1;
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182 | bdd5003a | pbrook | for (i = 0; i < 2; i++) { |
183 | bdd5003a | pbrook | r = (raw & 0x1f) << 3; |
184 | bdd5003a | pbrook | raw >>= 5;
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185 | bdd5003a | pbrook | g = (raw & 0x1f) << 3; |
186 | bdd5003a | pbrook | raw >>= 5;
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187 | bdd5003a | pbrook | b = (raw & 0x1f) << 3; |
188 | bdd5003a | pbrook | /* The I bit is ignored. */
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189 | bdd5003a | pbrook | raw >>= 6;
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190 | 0e1f5a0c | aliguori | switch (ds_get_bits_per_pixel(s->ds)) {
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191 | bdd5003a | pbrook | case 8: |
192 | bdd5003a | pbrook | s->pallette[n] = rgb_to_pixel8(r, g, b); |
193 | bdd5003a | pbrook | break;
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194 | bdd5003a | pbrook | case 15: |
195 | bdd5003a | pbrook | s->pallette[n] = rgb_to_pixel15(r, g, b); |
196 | bdd5003a | pbrook | break;
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197 | bdd5003a | pbrook | case 16: |
198 | bdd5003a | pbrook | s->pallette[n] = rgb_to_pixel16(r, g, b); |
199 | bdd5003a | pbrook | break;
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200 | bdd5003a | pbrook | case 24: |
201 | bdd5003a | pbrook | case 32: |
202 | bdd5003a | pbrook | s->pallette[n] = rgb_to_pixel32(r, g, b); |
203 | bdd5003a | pbrook | break;
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204 | bdd5003a | pbrook | } |
205 | bdd5003a | pbrook | n++; |
206 | bdd5003a | pbrook | } |
207 | bdd5003a | pbrook | } |
208 | bdd5003a | pbrook | |
209 | bdd5003a | pbrook | static void pl110_resize(pl110_state *s, int width, int height) |
210 | bdd5003a | pbrook | { |
211 | bdd5003a | pbrook | if (width != s->cols || height != s->rows) {
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212 | bdd5003a | pbrook | if (pl110_enabled(s)) {
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213 | 3023f332 | aliguori | qemu_console_resize(s->ds, width, height); |
214 | bdd5003a | pbrook | } |
215 | bdd5003a | pbrook | } |
216 | bdd5003a | pbrook | s->cols = width; |
217 | bdd5003a | pbrook | s->rows = height; |
218 | bdd5003a | pbrook | } |
219 | bdd5003a | pbrook | |
220 | bdd5003a | pbrook | /* Update interrupts. */
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221 | bdd5003a | pbrook | static void pl110_update(pl110_state *s) |
222 | bdd5003a | pbrook | { |
223 | bdd5003a | pbrook | /* TODO: Implement interrupts. */
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224 | bdd5003a | pbrook | } |
225 | bdd5003a | pbrook | |
226 | bdd5003a | pbrook | static uint32_t pl110_read(void *opaque, target_phys_addr_t offset) |
227 | bdd5003a | pbrook | { |
228 | bdd5003a | pbrook | pl110_state *s = (pl110_state *)opaque; |
229 | bdd5003a | pbrook | |
230 | bdd5003a | pbrook | if (offset >= 0xfe0 && offset < 0x1000) { |
231 | cdbdb648 | pbrook | if (s->versatile)
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232 | cdbdb648 | pbrook | return pl110_versatile_id[(offset - 0xfe0) >> 2]; |
233 | cdbdb648 | pbrook | else
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234 | cdbdb648 | pbrook | return pl110_id[(offset - 0xfe0) >> 2]; |
235 | bdd5003a | pbrook | } |
236 | bdd5003a | pbrook | if (offset >= 0x200 && offset < 0x400) { |
237 | bdd5003a | pbrook | return s->raw_pallette[(offset - 0x200) >> 2]; |
238 | bdd5003a | pbrook | } |
239 | bdd5003a | pbrook | switch (offset >> 2) { |
240 | bdd5003a | pbrook | case 0: /* LCDTiming0 */ |
241 | bdd5003a | pbrook | return s->timing[0]; |
242 | bdd5003a | pbrook | case 1: /* LCDTiming1 */ |
243 | bdd5003a | pbrook | return s->timing[1]; |
244 | bdd5003a | pbrook | case 2: /* LCDTiming2 */ |
245 | bdd5003a | pbrook | return s->timing[2]; |
246 | bdd5003a | pbrook | case 3: /* LCDTiming3 */ |
247 | bdd5003a | pbrook | return s->timing[3]; |
248 | bdd5003a | pbrook | case 4: /* LCDUPBASE */ |
249 | bdd5003a | pbrook | return s->upbase;
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250 | bdd5003a | pbrook | case 5: /* LCDLPBASE */ |
251 | bdd5003a | pbrook | return s->lpbase;
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252 | bdd5003a | pbrook | case 6: /* LCDIMSC */ |
253 | 64075cd7 | pbrook | if (s->versatile)
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254 | 64075cd7 | pbrook | return s->cr;
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255 | bdd5003a | pbrook | return s->int_mask;
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256 | bdd5003a | pbrook | case 7: /* LCDControl */ |
257 | 64075cd7 | pbrook | if (s->versatile)
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258 | 64075cd7 | pbrook | return s->int_mask;
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259 | bdd5003a | pbrook | return s->cr;
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260 | bdd5003a | pbrook | case 8: /* LCDRIS */ |
261 | bdd5003a | pbrook | return s->int_status;
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262 | bdd5003a | pbrook | case 9: /* LCDMIS */ |
263 | bdd5003a | pbrook | return s->int_status & s->int_mask;
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264 | bdd5003a | pbrook | case 11: /* LCDUPCURR */ |
265 | bdd5003a | pbrook | /* TODO: Implement vertical refresh. */
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266 | bdd5003a | pbrook | return s->upbase;
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267 | bdd5003a | pbrook | case 12: /* LCDLPCURR */ |
268 | bdd5003a | pbrook | return s->lpbase;
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269 | bdd5003a | pbrook | default:
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270 | 2ac71179 | Paul Brook | hw_error("pl110_read: Bad offset %x\n", (int)offset); |
271 | bdd5003a | pbrook | return 0; |
272 | bdd5003a | pbrook | } |
273 | bdd5003a | pbrook | } |
274 | bdd5003a | pbrook | |
275 | bdd5003a | pbrook | static void pl110_write(void *opaque, target_phys_addr_t offset, |
276 | bdd5003a | pbrook | uint32_t val) |
277 | bdd5003a | pbrook | { |
278 | bdd5003a | pbrook | pl110_state *s = (pl110_state *)opaque; |
279 | bdd5003a | pbrook | int n;
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280 | bdd5003a | pbrook | |
281 | bdd5003a | pbrook | /* For simplicity invalidate the display whenever a control register
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282 | bdd5003a | pbrook | is writen to. */
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283 | bdd5003a | pbrook | s->invalidate = 1;
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284 | bdd5003a | pbrook | if (offset >= 0x200 && offset < 0x400) { |
285 | bdd5003a | pbrook | /* Pallette. */
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286 | bdd5003a | pbrook | n = (offset - 0x200) >> 2; |
287 | bdd5003a | pbrook | s->raw_pallette[(offset - 0x200) >> 2] = val; |
288 | bdd5003a | pbrook | pl110_update_pallette(s, n); |
289 | e10c2bfb | pbrook | return;
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290 | bdd5003a | pbrook | } |
291 | bdd5003a | pbrook | switch (offset >> 2) { |
292 | bdd5003a | pbrook | case 0: /* LCDTiming0 */ |
293 | bdd5003a | pbrook | s->timing[0] = val;
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294 | bdd5003a | pbrook | n = ((val & 0xfc) + 4) * 4; |
295 | bdd5003a | pbrook | pl110_resize(s, n, s->rows); |
296 | bdd5003a | pbrook | break;
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297 | bdd5003a | pbrook | case 1: /* LCDTiming1 */ |
298 | bdd5003a | pbrook | s->timing[1] = val;
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299 | bdd5003a | pbrook | n = (val & 0x3ff) + 1; |
300 | bdd5003a | pbrook | pl110_resize(s, s->cols, n); |
301 | bdd5003a | pbrook | break;
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302 | bdd5003a | pbrook | case 2: /* LCDTiming2 */ |
303 | bdd5003a | pbrook | s->timing[2] = val;
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304 | bdd5003a | pbrook | break;
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305 | bdd5003a | pbrook | case 3: /* LCDTiming3 */ |
306 | bdd5003a | pbrook | s->timing[3] = val;
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307 | bdd5003a | pbrook | break;
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308 | bdd5003a | pbrook | case 4: /* LCDUPBASE */ |
309 | bdd5003a | pbrook | s->upbase = val; |
310 | bdd5003a | pbrook | break;
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311 | bdd5003a | pbrook | case 5: /* LCDLPBASE */ |
312 | bdd5003a | pbrook | s->lpbase = val; |
313 | bdd5003a | pbrook | break;
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314 | bdd5003a | pbrook | case 6: /* LCDIMSC */ |
315 | cdbdb648 | pbrook | if (s->versatile)
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316 | cdbdb648 | pbrook | goto control;
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317 | cdbdb648 | pbrook | imsc:
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318 | bdd5003a | pbrook | s->int_mask = val; |
319 | bdd5003a | pbrook | pl110_update(s); |
320 | bdd5003a | pbrook | break;
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321 | bdd5003a | pbrook | case 7: /* LCDControl */ |
322 | cdbdb648 | pbrook | if (s->versatile)
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323 | cdbdb648 | pbrook | goto imsc;
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324 | cdbdb648 | pbrook | control:
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325 | bdd5003a | pbrook | s->cr = val; |
326 | bdd5003a | pbrook | s->bpp = (val >> 1) & 7; |
327 | bdd5003a | pbrook | if (pl110_enabled(s)) {
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328 | 3023f332 | aliguori | qemu_console_resize(s->ds, s->cols, s->rows); |
329 | bdd5003a | pbrook | } |
330 | bdd5003a | pbrook | break;
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331 | bdd5003a | pbrook | case 10: /* LCDICR */ |
332 | bdd5003a | pbrook | s->int_status &= ~val; |
333 | bdd5003a | pbrook | pl110_update(s); |
334 | bdd5003a | pbrook | break;
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335 | bdd5003a | pbrook | default:
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336 | 2ac71179 | Paul Brook | hw_error("pl110_write: Bad offset %x\n", (int)offset); |
337 | bdd5003a | pbrook | } |
338 | bdd5003a | pbrook | } |
339 | bdd5003a | pbrook | |
340 | bdd5003a | pbrook | static CPUReadMemoryFunc *pl110_readfn[] = {
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341 | bdd5003a | pbrook | pl110_read, |
342 | bdd5003a | pbrook | pl110_read, |
343 | bdd5003a | pbrook | pl110_read |
344 | bdd5003a | pbrook | }; |
345 | bdd5003a | pbrook | |
346 | bdd5003a | pbrook | static CPUWriteMemoryFunc *pl110_writefn[] = {
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347 | bdd5003a | pbrook | pl110_write, |
348 | bdd5003a | pbrook | pl110_write, |
349 | bdd5003a | pbrook | pl110_write |
350 | bdd5003a | pbrook | }; |
351 | bdd5003a | pbrook | |
352 | 2e9bdce5 | Paul Brook | static void pl110_init(SysBusDevice *dev) |
353 | bdd5003a | pbrook | { |
354 | 2e9bdce5 | Paul Brook | pl110_state *s = FROM_SYSBUS(pl110_state, dev); |
355 | bdd5003a | pbrook | int iomemtype;
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356 | bdd5003a | pbrook | |
357 | bdd5003a | pbrook | iomemtype = cpu_register_io_memory(0, pl110_readfn,
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358 | bdd5003a | pbrook | pl110_writefn, s); |
359 | 2e9bdce5 | Paul Brook | sysbus_init_mmio(dev, 0x1000, iomemtype);
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360 | 2e9bdce5 | Paul Brook | sysbus_init_irq(dev, &s->irq); |
361 | 3023f332 | aliguori | s->ds = graphic_console_init(pl110_update_display, |
362 | 3023f332 | aliguori | pl110_invalidate_display, |
363 | 3023f332 | aliguori | NULL, NULL, s); |
364 | bdd5003a | pbrook | /* ??? Save/restore. */
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365 | bdd5003a | pbrook | } |
366 | 2e9bdce5 | Paul Brook | |
367 | 2e9bdce5 | Paul Brook | static void pl110_versatile_init(SysBusDevice *dev) |
368 | 2e9bdce5 | Paul Brook | { |
369 | 2e9bdce5 | Paul Brook | pl110_state *s = FROM_SYSBUS(pl110_state, dev); |
370 | 2e9bdce5 | Paul Brook | s->versatile = 1;
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371 | 2e9bdce5 | Paul Brook | pl110_init(dev); |
372 | 2e9bdce5 | Paul Brook | } |
373 | 2e9bdce5 | Paul Brook | |
374 | 2e9bdce5 | Paul Brook | static void pl110_register_devices(void) |
375 | 2e9bdce5 | Paul Brook | { |
376 | 2e9bdce5 | Paul Brook | sysbus_register_dev("pl110", sizeof(pl110_state), pl110_init); |
377 | 2e9bdce5 | Paul Brook | sysbus_register_dev("pl110_versatile", sizeof(pl110_state), |
378 | 2e9bdce5 | Paul Brook | pl110_versatile_init); |
379 | 2e9bdce5 | Paul Brook | } |
380 | 2e9bdce5 | Paul Brook | |
381 | 2e9bdce5 | Paul Brook | device_init(pl110_register_devices) |