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. */
41 enum pl110_bppmode bpp;
43 uint32_t pallette[256];
44 uint32_t raw_pallette[128];
48 static const unsigned char pl110_id[] =
49 { 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
51 /* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
52 has a different ID. However Linux only looks for the normal ID. */
54 static const unsigned char pl110_versatile_id[] =
55 { 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
57 #define pl110_versatile_id pl110_id
60 static inline uint32_t rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
62 return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
65 static inline uint32_t rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
67 return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
70 static inline uint32_t rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
72 return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
75 static inline uint32_t rgb_to_pixel24(unsigned int r, unsigned int g, unsigned b)
77 return (r << 16) | (g << 8) | b;
80 static inline uint32_t rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
82 return (r << 16) | (g << 8) | b;
85 typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int);
88 #include "pl110_template.h"
90 #include "pl110_template.h"
92 #include "pl110_template.h"
94 #include "pl110_template.h"
96 #include "pl110_template.h"
98 static int pl110_enabled(pl110_state *s)
100 return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
103 static void pl110_update_display(void *opaque)
105 pl110_state *s = (pl110_state *)opaque;
116 int dirty, new_dirty;
119 if (!pl110_enabled(s))
122 switch (s->ds->depth) {
126 fntable = pl110_draw_fn_8;
130 fntable = pl110_draw_fn_15;
134 fntable = pl110_draw_fn_16;
138 fntable = pl110_draw_fn_24;
142 fntable = pl110_draw_fn_32;
146 fprintf(stderr, "pl110: Bad color depth\n");
149 if (s->cr & PL110_CR_BEBO)
150 fn = fntable[s->bpp + 6];
151 else if (s->cr & PL110_CR_BEPO)
152 fn = fntable[s->bpp + 12];
154 fn = fntable[s->bpp];
176 dest_width *= s->cols;
177 pallette = s->pallette;
179 /* HACK: Arm aliases physical memory at 0x80000000. */
180 if (base > 0x80000000)
182 src = phys_ram_base + base;
187 dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
189 for (i = 0; i < s->rows; i++) {
190 if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
193 for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
194 new_dirty |= cpu_physical_memory_get_dirty(addr + tmp,
199 if (dirty || new_dirty || s->invalidate) {
200 fn(pallette, dest, src, s->cols);
214 cpu_physical_memory_reset_dirty(base + first * src_width,
215 base + (last + 1) * src_width,
217 dpy_update(s->ds, 0, first, s->cols, last - first + 1);
220 static void pl110_invalidate_display(void * opaque)
222 pl110_state *s = (pl110_state *)opaque;
226 static void pl110_update_pallette(pl110_state *s, int n)
230 unsigned int r, g, b;
232 raw = s->raw_pallette[n];
234 for (i = 0; i < 2; i++) {
235 r = (raw & 0x1f) << 3;
237 g = (raw & 0x1f) << 3;
239 b = (raw & 0x1f) << 3;
240 /* The I bit is ignored. */
242 switch (s->ds->depth) {
244 s->pallette[n] = rgb_to_pixel8(r, g, b);
247 s->pallette[n] = rgb_to_pixel15(r, g, b);
250 s->pallette[n] = rgb_to_pixel16(r, g, b);
254 s->pallette[n] = rgb_to_pixel32(r, g, b);
261 static void pl110_resize(pl110_state *s, int width, int height)
263 if (width != s->cols || height != s->rows) {
264 if (pl110_enabled(s)) {
265 dpy_resize(s->ds, width, height);
272 /* Update interrupts. */
273 static void pl110_update(pl110_state *s)
275 /* TODO: Implement interrupts. */
278 static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
280 pl110_state *s = (pl110_state *)opaque;
283 if (offset >= 0xfe0 && offset < 0x1000) {
285 return pl110_versatile_id[(offset - 0xfe0) >> 2];
287 return pl110_id[(offset - 0xfe0) >> 2];
289 if (offset >= 0x200 && offset < 0x400) {
290 return s->raw_pallette[(offset - 0x200) >> 2];
292 switch (offset >> 2) {
293 case 0: /* LCDTiming0 */
295 case 1: /* LCDTiming1 */
297 case 2: /* LCDTiming2 */
299 case 3: /* LCDTiming3 */
301 case 4: /* LCDUPBASE */
303 case 5: /* LCDLPBASE */
305 case 6: /* LCDIMSC */
307 case 7: /* LCDControl */
310 return s->int_status;
312 return s->int_status & s->int_mask;
313 case 11: /* LCDUPCURR */
314 /* TODO: Implement vertical refresh. */
316 case 12: /* LCDLPCURR */
319 cpu_abort (cpu_single_env, "pl110_read: Bad offset %x\n", offset);
324 static void pl110_write(void *opaque, target_phys_addr_t offset,
327 pl110_state *s = (pl110_state *)opaque;
330 /* For simplicity invalidate the display whenever a control register
334 if (offset >= 0x200 && offset < 0x400) {
336 n = (offset - 0x200) >> 2;
337 s->raw_pallette[(offset - 0x200) >> 2] = val;
338 pl110_update_pallette(s, n);
341 switch (offset >> 2) {
342 case 0: /* LCDTiming0 */
344 n = ((val & 0xfc) + 4) * 4;
345 pl110_resize(s, n, s->rows);
347 case 1: /* LCDTiming1 */
349 n = (val & 0x3ff) + 1;
350 pl110_resize(s, s->cols, n);
352 case 2: /* LCDTiming2 */
355 case 3: /* LCDTiming3 */
358 case 4: /* LCDUPBASE */
361 case 5: /* LCDLPBASE */
364 case 6: /* LCDIMSC */
371 case 7: /* LCDControl */
376 s->bpp = (val >> 1) & 7;
377 if (pl110_enabled(s)) {
378 dpy_resize(s->ds, s->cols, s->rows);
381 case 10: /* LCDICR */
382 s->int_status &= ~val;
386 cpu_abort (cpu_single_env, "pl110_write: Bad offset %x\n", offset);
390 static CPUReadMemoryFunc *pl110_readfn[] = {
396 static CPUWriteMemoryFunc *pl110_writefn[] = {
402 void *pl110_init(DisplayState *ds, uint32_t base, void *pic, int irq,
408 s = (pl110_state *)qemu_mallocz(sizeof(pl110_state));
409 iomemtype = cpu_register_io_memory(0, pl110_readfn,
411 cpu_register_physical_memory(base, 0x00000fff, iomemtype);
414 s->versatile = versatile;
417 graphic_console_init(ds, pl110_update_display, pl110_invalidate_display,
419 /* ??? Save/restore. */