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
12 #define PL110_CR_EN 0x001
13 #define PL110_CR_BEBO 0x200
14 #define PL110_CR_BEPO 0x400
15 #define PL110_CR_PWR 0x800
30 /* The Versatile/PB uses a slightly modified PL110 controller. */
40 enum pl110_bppmode bpp;
42 uint32_t pallette[256];
43 uint32_t raw_pallette[128];
47 static const unsigned char pl110_id[] =
48 { 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
50 /* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
51 has a different ID. However Linux only looks for the normal ID. */
53 static const unsigned char pl110_versatile_id[] =
54 { 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
56 #define pl110_versatile_id pl110_id
59 static inline uint32_t rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
61 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
64 static inline uint32_t rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
66 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
69 static inline uint32_t rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
71 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
74 static inline uint32_t rgb_to_pixel24(unsigned int r, unsigned int g, unsigned b)
76 return (r << 16) | (g << 8) | b;
79 static inline uint32_t rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
81 return (r << 16) | (g << 8) | b;
84 typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int);
87 #include "pl110_template.h"
89 #include "pl110_template.h"
91 #include "pl110_template.h"
93 #include "pl110_template.h"
95 #include "pl110_template.h"
97 static int pl110_enabled(pl110_state *s)
99 return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
102 static void pl110_update_display(void *opaque)
104 pl110_state *s = (pl110_state *)opaque;
115 int dirty, new_dirty;
118 if (!pl110_enabled(s))
121 switch (s->ds->depth) {
125 fntable = pl110_draw_fn_8;
129 fntable = pl110_draw_fn_15;
133 fntable = pl110_draw_fn_16;
137 fntable = pl110_draw_fn_24;
141 fntable = pl110_draw_fn_32;
145 fprintf(stderr, "pl110: Bad color depth\n");
148 if (s->cr & PL110_CR_BEBO)
149 fn = fntable[s->bpp + 6];
150 else if (s->cr & PL110_CR_BEPO)
151 fn = fntable[s->bpp + 12];
153 fn = fntable[s->bpp];
175 dest_width *= s->cols;
176 pallette = s->pallette;
178 /* HACK: Arm aliases physical memory at 0x80000000. */
179 if (base > 0x80000000)
181 src = phys_ram_base + base;
186 dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
188 for (i = 0; i < s->rows; i++) {
189 if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
192 for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
193 new_dirty |= cpu_physical_memory_get_dirty(addr + tmp,
198 if (dirty || new_dirty || s->invalidate) {
199 fn(pallette, dest, src, s->cols);
213 cpu_physical_memory_reset_dirty(base + first * src_width,
214 base + (last + 1) * src_width,
216 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
219 static void pl110_invalidate_display(void * opaque)
221 pl110_state *s = (pl110_state *)opaque;
225 static void pl110_update_pallette(pl110_state *s, int n)
229 unsigned int r, g, b;
231 raw = s->raw_pallette[n];
233 for (i = 0; i < 2; i++) {
234 r = (raw & 0x1f) << 3;
236 g = (raw & 0x1f) << 3;
238 b = (raw & 0x1f) << 3;
239 /* The I bit is ignored. */
241 switch (s->ds->depth) {
243 s->pallette[n] = rgb_to_pixel8(r, g, b);
246 s->pallette[n] = rgb_to_pixel15(r, g, b);
249 s->pallette[n] = rgb_to_pixel16(r, g, b);
253 s->pallette[n] = rgb_to_pixel32(r, g, b);
260 static void pl110_resize(pl110_state *s, int width, int height)
262 if (width != s->cols || height != s->rows) {
263 if (pl110_enabled(s)) {
264 dpy_resize(s->ds, width, height);
271 /* Update interrupts. */
272 static void pl110_update(pl110_state *s)
274 /* TODO: Implement interrupts. */
277 static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
279 pl110_state *s = (pl110_state *)opaque;
282 if (offset >= 0xfe0 && offset < 0x1000) {
284 return pl110_versatile_id[(offset - 0xfe0) >> 2];
286 return pl110_id[(offset - 0xfe0) >> 2];
288 if (offset >= 0x200 && offset < 0x400) {
289 return s->raw_pallette[(offset - 0x200) >> 2];
291 switch (offset >> 2) {
292 case 0: /* LCDTiming0 */
294 case 1: /* LCDTiming1 */
296 case 2: /* LCDTiming2 */
298 case 3: /* LCDTiming3 */
300 case 4: /* LCDUPBASE */
302 case 5: /* LCDLPBASE */
304 case 6: /* LCDIMSC */
306 case 7: /* LCDControl */
309 return s->int_status;
311 return s->int_status & s->int_mask;
312 case 11: /* LCDUPCURR */
313 /* TODO: Implement vertical refresh. */
315 case 12: /* LCDLPCURR */
318 cpu_abort (cpu_single_env, "pl110_read: Bad offset %x\n", offset);
323 static void pl110_write(void *opaque, target_phys_addr_t offset,
326 pl110_state *s = (pl110_state *)opaque;
329 /* For simplicity invalidate the display whenever a control register
333 if (offset >= 0x200 && offset < 0x400) {
335 n = (offset - 0x200) >> 2;
336 s->raw_pallette[(offset - 0x200) >> 2] = val;
337 pl110_update_pallette(s, n);
340 switch (offset >> 2) {
341 case 0: /* LCDTiming0 */
343 n = ((val & 0xfc) + 4) * 4;
344 pl110_resize(s, n, s->rows);
346 case 1: /* LCDTiming1 */
348 n = (val & 0x3ff) + 1;
349 pl110_resize(s, s->cols, n);
351 case 2: /* LCDTiming2 */
354 case 3: /* LCDTiming3 */
357 case 4: /* LCDUPBASE */
360 case 5: /* LCDLPBASE */
363 case 6: /* LCDIMSC */
370 case 7: /* LCDControl */
375 s->bpp = (val >> 1) & 7;
376 if (pl110_enabled(s)) {
377 dpy_resize(s->ds, s->cols, s->rows);
380 case 10: /* LCDICR */
381 s->int_status &= ~val;
385 cpu_abort (cpu_single_env, "pl110_write: Bad offset %x\n", offset);
389 static CPUReadMemoryFunc *pl110_readfn[] = {
395 static CPUWriteMemoryFunc *pl110_writefn[] = {
401 void *pl110_init(DisplayState *ds, uint32_t base, qemu_irq irq,
407 s = (pl110_state *)qemu_mallocz(sizeof(pl110_state));
408 iomemtype = cpu_register_io_memory(0, pl110_readfn,
410 cpu_register_physical_memory(base, 0x00000fff, iomemtype);
413 s->versatile = versatile;
415 graphic_console_init(ds, pl110_update_display, pl110_invalidate_display,
417 /* ??? Save/restore. */