2 * TI OMAP general purpose memory controller emulation.
4 * Copyright (C) 2007-2009 Nokia Corporation
6 * Enhancements for OMAP3 and NAND support written by Juha Riihimäki
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 or
11 * (at your option) any later version of the License.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include "exec-memory.h"
27 /* General-Purpose Memory Controller */
37 uint32_t prefconfig[2];
41 struct omap_gpmc_cs_file_s {
43 target_phys_addr_t base;
46 MemoryRegion container;
47 void (*base_update)(void *opaque, target_phys_addr_t new);
48 void (*unmap)(void *opaque);
57 static void omap_gpmc_int_update(struct omap_gpmc_s *s)
59 qemu_set_irq(s->irq, s->irqen & s->irqst);
62 static void omap_gpmc_cs_map(struct omap_gpmc_cs_file_s *f, int base, int mask)
64 /* TODO: check for overlapping regions and report access errors */
65 if ((mask != 0x8 && mask != 0xc && mask != 0xe && mask != 0xf) ||
66 (base < 0 || base >= 0x40) ||
67 (base & 0x0f & ~mask)) {
68 fprintf(stderr, "%s: wrong cs address mapping/decoding!\n",
77 f->size = (0x0fffffff & ~(mask << 24)) + 1;
78 /* TODO: rather than setting the size of the mapping (which should be
79 * constant), the mask should cause wrapping of the address space, so
80 * that the same memory becomes accessible at every <i>size</i> bytes
81 * starting from <i>base</i>. */
83 memory_region_init(&f->container, "omap-gpmc-file", f->size);
84 memory_region_add_subregion(&f->container, 0, f->iomem);
85 memory_region_add_subregion(get_system_memory(), f->base,
90 f->base_update(f->opaque, f->base);
93 static void omap_gpmc_cs_unmap(struct omap_gpmc_cs_file_s *f)
99 memory_region_del_subregion(get_system_memory(), &f->container);
100 memory_region_del_subregion(&f->container, f->iomem);
101 memory_region_destroy(&f->container);
108 void omap_gpmc_reset(struct omap_gpmc_s *s)
115 omap_gpmc_int_update(s);
118 s->prefconfig[0] = 0x00004000;
119 s->prefconfig[1] = 0x00000000;
123 for (i = 0; i < 8; i ++) {
124 if (s->cs_file[i].config[6] & (1 << 6)) /* CSVALID */
125 omap_gpmc_cs_unmap(s->cs_file + i);
126 s->cs_file[i].config[0] = i ? 1 << 12 : 0;
127 s->cs_file[i].config[1] = 0x101001;
128 s->cs_file[i].config[2] = 0x020201;
129 s->cs_file[i].config[3] = 0x10031003;
130 s->cs_file[i].config[4] = 0x10f1111;
131 s->cs_file[i].config[5] = 0;
132 s->cs_file[i].config[6] = 0xf00 | (i ? 0 : 1 << 6);
133 if (s->cs_file[i].config[6] & (1 << 6)) /* CSVALID */
134 omap_gpmc_cs_map(&s->cs_file[i],
135 s->cs_file[i].config[6] & 0x1f, /* MASKADDR */
136 (s->cs_file[i].config[6] >> 8 & 0xf)); /* BASEADDR */
138 omap_gpmc_cs_map(s->cs_file, 0, 0xf);
141 s->ecc_cfg = 0x3fcff000;
142 for (i = 0; i < 9; i ++)
143 ecc_reset(&s->ecc[i]);
146 static uint64_t omap_gpmc_read(void *opaque, target_phys_addr_t addr,
149 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
151 struct omap_gpmc_cs_file_s *f;
154 return omap_badwidth_read32(opaque, addr);
158 case 0x000: /* GPMC_REVISION */
161 case 0x010: /* GPMC_SYSCONFIG */
164 case 0x014: /* GPMC_SYSSTATUS */
165 return 1; /* RESETDONE */
167 case 0x018: /* GPMC_IRQSTATUS */
170 case 0x01c: /* GPMC_IRQENABLE */
173 case 0x040: /* GPMC_TIMEOUT_CONTROL */
176 case 0x044: /* GPMC_ERR_ADDRESS */
177 case 0x048: /* GPMC_ERR_TYPE */
180 case 0x050: /* GPMC_CONFIG */
183 case 0x054: /* GPMC_STATUS */
186 case 0x060 ... 0x1d4:
187 cs = (addr - 0x060) / 0x30;
191 case 0x60: /* GPMC_CONFIG1 */
193 case 0x64: /* GPMC_CONFIG2 */
195 case 0x68: /* GPMC_CONFIG3 */
197 case 0x6c: /* GPMC_CONFIG4 */
199 case 0x70: /* GPMC_CONFIG5 */
201 case 0x74: /* GPMC_CONFIG6 */
203 case 0x78: /* GPMC_CONFIG7 */
205 case 0x84: /* GPMC_NAND_DATA */
210 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
211 return s->prefconfig[0];
212 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
213 return s->prefconfig[1];
214 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
215 return s->prefcontrol;
216 case 0x1f0: /* GPMC_PREFETCH_STATUS */
217 return (s->preffifo << 24) |
219 ((s->prefconfig[0] >> 8) & 0x7f) ? 1 : 0) << 16) |
222 case 0x1f4: /* GPMC_ECC_CONFIG */
224 case 0x1f8: /* GPMC_ECC_CONTROL */
226 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
228 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
229 cs = (addr & 0x1f) >> 2;
230 /* TODO: check correctness */
232 ((s->ecc[cs].cp & 0x07) << 0) |
233 ((s->ecc[cs].cp & 0x38) << 13) |
234 ((s->ecc[cs].lp[0] & 0x1ff) << 3) |
235 ((s->ecc[cs].lp[1] & 0x1ff) << 19);
237 case 0x230: /* GPMC_TESTMODE_CTRL */
239 case 0x234: /* GPMC_PSA_LSB */
240 case 0x238: /* GPMC_PSA_MSB */
248 static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
249 uint64_t value, unsigned size)
251 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
253 struct omap_gpmc_cs_file_s *f;
256 return omap_badwidth_write32(opaque, addr, value);
260 case 0x000: /* GPMC_REVISION */
261 case 0x014: /* GPMC_SYSSTATUS */
262 case 0x054: /* GPMC_STATUS */
263 case 0x1f0: /* GPMC_PREFETCH_STATUS */
264 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
265 case 0x234: /* GPMC_PSA_LSB */
266 case 0x238: /* GPMC_PSA_MSB */
270 case 0x010: /* GPMC_SYSCONFIG */
271 if ((value >> 3) == 0x3)
272 fprintf(stderr, "%s: bad SDRAM idle mode %"PRIi64"\n",
273 __FUNCTION__, value >> 3);
276 s->sysconfig = value & 0x19;
279 case 0x018: /* GPMC_IRQSTATUS */
281 omap_gpmc_int_update(s);
284 case 0x01c: /* GPMC_IRQENABLE */
285 s->irqen = value & 0xf03;
286 omap_gpmc_int_update(s);
289 case 0x040: /* GPMC_TIMEOUT_CONTROL */
290 s->timeout = value & 0x1ff1;
293 case 0x044: /* GPMC_ERR_ADDRESS */
294 case 0x048: /* GPMC_ERR_TYPE */
297 case 0x050: /* GPMC_CONFIG */
298 s->config = value & 0xf13;
301 case 0x060 ... 0x1d4:
302 cs = (addr - 0x060) / 0x30;
306 case 0x60: /* GPMC_CONFIG1 */
307 f->config[0] = value & 0xffef3e13;
309 case 0x64: /* GPMC_CONFIG2 */
310 f->config[1] = value & 0x001f1f8f;
312 case 0x68: /* GPMC_CONFIG3 */
313 f->config[2] = value & 0x001f1f8f;
315 case 0x6c: /* GPMC_CONFIG4 */
316 f->config[3] = value & 0x1f8f1f8f;
318 case 0x70: /* GPMC_CONFIG5 */
319 f->config[4] = value & 0x0f1f1f1f;
321 case 0x74: /* GPMC_CONFIG6 */
322 f->config[5] = value & 0x00000fcf;
324 case 0x78: /* GPMC_CONFIG7 */
325 if ((f->config[6] ^ value) & 0xf7f) {
326 if (f->config[6] & (1 << 6)) /* CSVALID */
327 omap_gpmc_cs_unmap(f);
328 if (value & (1 << 6)) /* CSVALID */
329 omap_gpmc_cs_map(f, value & 0x1f, /* MASKADDR */
330 (value >> 8 & 0xf)); /* BASEADDR */
332 f->config[6] = value & 0x00000f7f;
334 case 0x7c: /* GPMC_NAND_COMMAND */
335 case 0x80: /* GPMC_NAND_ADDRESS */
336 case 0x84: /* GPMC_NAND_DATA */
344 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
345 s->prefconfig[0] = value & 0x7f8f7fbf;
346 /* TODO: update interrupts, fifos, dmas */
349 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
350 s->prefconfig[1] = value & 0x3fff;
353 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
354 s->prefcontrol = value & 1;
355 if (s->prefcontrol) {
356 if (s->prefconfig[0] & 1)
364 case 0x1f4: /* GPMC_ECC_CONFIG */
367 case 0x1f8: /* GPMC_ECC_CONTROL */
368 if (value & (1 << 8))
369 for (cs = 0; cs < 9; cs ++)
370 ecc_reset(&s->ecc[cs]);
371 s->ecc_ptr = value & 0xf;
372 if (s->ecc_ptr == 0 || s->ecc_ptr > 9) {
377 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
378 s->ecc_cfg = value & 0x3fcff1ff;
380 case 0x230: /* GPMC_TESTMODE_CTRL */
382 fprintf(stderr, "%s: test mode enable attempt\n", __FUNCTION__);
392 static const MemoryRegionOps omap_gpmc_ops = {
393 .read = omap_gpmc_read,
394 .write = omap_gpmc_write,
395 .endianness = DEVICE_NATIVE_ENDIAN,
398 struct omap_gpmc_s *omap_gpmc_init(target_phys_addr_t base, qemu_irq irq)
400 struct omap_gpmc_s *s = (struct omap_gpmc_s *)
401 g_malloc0(sizeof(struct omap_gpmc_s));
405 memory_region_init_io(&s->iomem, &omap_gpmc_ops, s, "omap-gpmc", 0x1000);
406 memory_region_add_subregion(get_system_memory(), base, &s->iomem);
411 void omap_gpmc_attach(struct omap_gpmc_s *s, int cs, MemoryRegion *iomem,
412 void (*base_upd)(void *opaque, target_phys_addr_t new),
413 void (*unmap)(void *opaque), void *opaque)
415 struct omap_gpmc_cs_file_s *f;
417 if (cs < 0 || cs >= 8) {
418 fprintf(stderr, "%s: bad chip-select %i\n", __FUNCTION__, cs);
424 f->base_update = base_upd;
428 if (f->config[6] & (1 << 6)) /* CSVALID */
429 omap_gpmc_cs_map(f, f->config[6] & 0x1f, /* MASKADDR */
430 (f->config[6] >> 8 & 0xf)); /* BASEADDR */