2 * Arm PrimeCell PL110 Color LCD Controller
4 * Copyright (c) 2005-2006 CodeSourcery.
5 * Written by Paul Brook
7 * This code is licenced under the GNU LGPL
11 #include "primecell.h"
14 #define PL110_CR_EN 0x001
15 #define PL110_CR_BGR 0x100
16 #define PL110_CR_BEBO 0x200
17 #define PL110_CR_BEPO 0x400
18 #define PL110_CR_PWR 0x800
35 /* The Versatile/PB uses a slightly modified PL110 controller. */
45 enum pl110_bppmode bpp;
47 uint32_t pallette[256];
48 uint32_t raw_pallette[128];
52 static const unsigned char pl110_id[] =
53 { 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
55 /* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
56 has a different ID. However Linux only looks for the normal ID. */
58 static const unsigned char pl110_versatile_id[] =
59 { 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
61 #define pl110_versatile_id pl110_id
64 static inline uint32_t rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
66 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
69 static inline uint32_t rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
71 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
74 static inline uint32_t rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
76 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
79 static inline uint32_t rgb_to_pixel24(unsigned int r, unsigned int g, unsigned b)
81 return (r << 16) | (g << 8) | b;
84 static inline uint32_t rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
86 return (r << 16) | (g << 8) | b;
89 typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int);
92 #include "pl110_template.h"
94 #include "pl110_template.h"
96 #include "pl110_template.h"
98 #include "pl110_template.h"
100 #include "pl110_template.h"
102 static int pl110_enabled(pl110_state *s)
104 return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
107 static void pl110_update_display(void *opaque)
109 pl110_state *s = (pl110_state *)opaque;
120 int dirty, new_dirty;
124 if (!pl110_enabled(s))
127 switch (s->ds->depth) {
131 fntable = pl110_draw_fn_8;
135 fntable = pl110_draw_fn_15;
139 fntable = pl110_draw_fn_16;
143 fntable = pl110_draw_fn_24;
147 fntable = pl110_draw_fn_32;
151 fprintf(stderr, "pl110: Bad color depth\n");
154 if (s->cr & PL110_CR_BGR)
159 if (s->cr & PL110_CR_BEBO)
160 fn = fntable[s->bpp + 6 + bpp_offset];
161 else if (s->cr & PL110_CR_BEPO)
162 fn = fntable[s->bpp + 12 + bpp_offset];
164 fn = fntable[s->bpp + bpp_offset];
186 dest_width *= s->cols;
187 pallette = s->pallette;
189 /* HACK: Arm aliases physical memory at 0x80000000. */
190 if (base > 0x80000000)
192 src = phys_ram_base + base;
197 dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
199 for (i = 0; i < s->rows; i++) {
200 if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
203 for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
204 new_dirty |= cpu_physical_memory_get_dirty(addr + tmp,
209 if (dirty || new_dirty || s->invalidate) {
210 fn(pallette, dest, src, s->cols);
224 cpu_physical_memory_reset_dirty(base + first * src_width,
225 base + (last + 1) * src_width,
227 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
230 static void pl110_invalidate_display(void * opaque)
232 pl110_state *s = (pl110_state *)opaque;
236 static void pl110_update_pallette(pl110_state *s, int n)
240 unsigned int r, g, b;
242 raw = s->raw_pallette[n];
244 for (i = 0; i < 2; i++) {
245 r = (raw & 0x1f) << 3;
247 g = (raw & 0x1f) << 3;
249 b = (raw & 0x1f) << 3;
250 /* The I bit is ignored. */
252 switch (s->ds->depth) {
254 s->pallette[n] = rgb_to_pixel8(r, g, b);
257 s->pallette[n] = rgb_to_pixel15(r, g, b);
260 s->pallette[n] = rgb_to_pixel16(r, g, b);
264 s->pallette[n] = rgb_to_pixel32(r, g, b);
271 static void pl110_resize(pl110_state *s, int width, int height)
273 if (width != s->cols || height != s->rows) {
274 if (pl110_enabled(s)) {
275 qemu_console_resize(s->console, width, height);
282 /* Update interrupts. */
283 static void pl110_update(pl110_state *s)
285 /* TODO: Implement interrupts. */
288 static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
290 pl110_state *s = (pl110_state *)opaque;
293 if (offset >= 0xfe0 && offset < 0x1000) {
295 return pl110_versatile_id[(offset - 0xfe0) >> 2];
297 return pl110_id[(offset - 0xfe0) >> 2];
299 if (offset >= 0x200 && offset < 0x400) {
300 return s->raw_pallette[(offset - 0x200) >> 2];
302 switch (offset >> 2) {
303 case 0: /* LCDTiming0 */
305 case 1: /* LCDTiming1 */
307 case 2: /* LCDTiming2 */
309 case 3: /* LCDTiming3 */
311 case 4: /* LCDUPBASE */
313 case 5: /* LCDLPBASE */
315 case 6: /* LCDIMSC */
319 case 7: /* LCDControl */
324 return s->int_status;
326 return s->int_status & s->int_mask;
327 case 11: /* LCDUPCURR */
328 /* TODO: Implement vertical refresh. */
330 case 12: /* LCDLPCURR */
333 cpu_abort (cpu_single_env, "pl110_read: Bad offset %x\n", (int)offset);
338 static void pl110_write(void *opaque, target_phys_addr_t offset,
341 pl110_state *s = (pl110_state *)opaque;
344 /* For simplicity invalidate the display whenever a control register
348 if (offset >= 0x200 && offset < 0x400) {
350 n = (offset - 0x200) >> 2;
351 s->raw_pallette[(offset - 0x200) >> 2] = val;
352 pl110_update_pallette(s, n);
355 switch (offset >> 2) {
356 case 0: /* LCDTiming0 */
358 n = ((val & 0xfc) + 4) * 4;
359 pl110_resize(s, n, s->rows);
361 case 1: /* LCDTiming1 */
363 n = (val & 0x3ff) + 1;
364 pl110_resize(s, s->cols, n);
366 case 2: /* LCDTiming2 */
369 case 3: /* LCDTiming3 */
372 case 4: /* LCDUPBASE */
375 case 5: /* LCDLPBASE */
378 case 6: /* LCDIMSC */
385 case 7: /* LCDControl */
390 s->bpp = (val >> 1) & 7;
391 if (pl110_enabled(s)) {
392 qemu_console_resize(s->console, s->cols, s->rows);
395 case 10: /* LCDICR */
396 s->int_status &= ~val;
400 cpu_abort (cpu_single_env, "pl110_write: Bad offset %x\n", (int)offset);
404 static CPUReadMemoryFunc *pl110_readfn[] = {
410 static CPUWriteMemoryFunc *pl110_writefn[] = {
416 void *pl110_init(DisplayState *ds, uint32_t base, qemu_irq irq,
422 s = (pl110_state *)qemu_mallocz(sizeof(pl110_state));
423 iomemtype = cpu_register_io_memory(0, pl110_readfn,
425 cpu_register_physical_memory(base, 0x00001000, iomemtype);
428 s->versatile = versatile;
430 s->console = graphic_console_init(ds, pl110_update_display,
431 pl110_invalidate_display,
433 /* ??? Save/restore. */