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 {
44 MemoryRegion container;
52 static void omap_gpmc_int_update(struct omap_gpmc_s *s)
54 qemu_set_irq(s->irq, s->irqen & s->irqst);
57 static void omap_gpmc_cs_map(struct omap_gpmc_cs_file_s *f, int base, int mask)
65 /* TODO: check for overlapping regions and report access errors */
66 if ((mask != 0x8 && mask != 0xc && mask != 0xe && mask != 0xf) ||
67 (base < 0 || base >= 0x40) ||
68 (base & 0x0f & ~mask)) {
69 fprintf(stderr, "%s: wrong cs address mapping/decoding!\n",
75 size = (0x0fffffff & ~(mask << 24)) + 1;
76 /* TODO: rather than setting the size of the mapping (which should be
77 * constant), the mask should cause wrapping of the address space, so
78 * that the same memory becomes accessible at every <i>size</i> bytes
79 * starting from <i>base</i>. */
80 memory_region_init(&f->container, "omap-gpmc-file", size);
81 memory_region_add_subregion(&f->container, 0, f->iomem);
82 memory_region_add_subregion(get_system_memory(), base,
86 static void omap_gpmc_cs_unmap(struct omap_gpmc_cs_file_s *f)
92 memory_region_del_subregion(get_system_memory(), &f->container);
93 memory_region_del_subregion(&f->container, f->iomem);
94 memory_region_destroy(&f->container);
97 void omap_gpmc_reset(struct omap_gpmc_s *s)
104 omap_gpmc_int_update(s);
107 s->prefconfig[0] = 0x00004000;
108 s->prefconfig[1] = 0x00000000;
112 for (i = 0; i < 8; i ++) {
113 if (s->cs_file[i].config[6] & (1 << 6)) /* CSVALID */
114 omap_gpmc_cs_unmap(s->cs_file + i);
115 s->cs_file[i].config[0] = i ? 1 << 12 : 0;
116 s->cs_file[i].config[1] = 0x101001;
117 s->cs_file[i].config[2] = 0x020201;
118 s->cs_file[i].config[3] = 0x10031003;
119 s->cs_file[i].config[4] = 0x10f1111;
120 s->cs_file[i].config[5] = 0;
121 s->cs_file[i].config[6] = 0xf00 | (i ? 0 : 1 << 6);
122 if (s->cs_file[i].config[6] & (1 << 6)) /* CSVALID */
123 omap_gpmc_cs_map(&s->cs_file[i],
124 s->cs_file[i].config[6] & 0x1f, /* MASKADDR */
125 (s->cs_file[i].config[6] >> 8 & 0xf)); /* BASEADDR */
129 s->ecc_cfg = 0x3fcff000;
130 for (i = 0; i < 9; i ++)
131 ecc_reset(&s->ecc[i]);
134 static uint64_t omap_gpmc_read(void *opaque, target_phys_addr_t addr,
137 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
139 struct omap_gpmc_cs_file_s *f;
142 return omap_badwidth_read32(opaque, addr);
146 case 0x000: /* GPMC_REVISION */
149 case 0x010: /* GPMC_SYSCONFIG */
152 case 0x014: /* GPMC_SYSSTATUS */
153 return 1; /* RESETDONE */
155 case 0x018: /* GPMC_IRQSTATUS */
158 case 0x01c: /* GPMC_IRQENABLE */
161 case 0x040: /* GPMC_TIMEOUT_CONTROL */
164 case 0x044: /* GPMC_ERR_ADDRESS */
165 case 0x048: /* GPMC_ERR_TYPE */
168 case 0x050: /* GPMC_CONFIG */
171 case 0x054: /* GPMC_STATUS */
174 case 0x060 ... 0x1d4:
175 cs = (addr - 0x060) / 0x30;
179 case 0x60: /* GPMC_CONFIG1 */
181 case 0x64: /* GPMC_CONFIG2 */
183 case 0x68: /* GPMC_CONFIG3 */
185 case 0x6c: /* GPMC_CONFIG4 */
187 case 0x70: /* GPMC_CONFIG5 */
189 case 0x74: /* GPMC_CONFIG6 */
191 case 0x78: /* GPMC_CONFIG7 */
193 case 0x84: /* GPMC_NAND_DATA */
198 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
199 return s->prefconfig[0];
200 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
201 return s->prefconfig[1];
202 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
203 return s->prefcontrol;
204 case 0x1f0: /* GPMC_PREFETCH_STATUS */
205 return (s->preffifo << 24) |
207 ((s->prefconfig[0] >> 8) & 0x7f) ? 1 : 0) << 16) |
210 case 0x1f4: /* GPMC_ECC_CONFIG */
212 case 0x1f8: /* GPMC_ECC_CONTROL */
214 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
216 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
217 cs = (addr & 0x1f) >> 2;
218 /* TODO: check correctness */
220 ((s->ecc[cs].cp & 0x07) << 0) |
221 ((s->ecc[cs].cp & 0x38) << 13) |
222 ((s->ecc[cs].lp[0] & 0x1ff) << 3) |
223 ((s->ecc[cs].lp[1] & 0x1ff) << 19);
225 case 0x230: /* GPMC_TESTMODE_CTRL */
227 case 0x234: /* GPMC_PSA_LSB */
228 case 0x238: /* GPMC_PSA_MSB */
236 static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
237 uint64_t value, unsigned size)
239 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
241 struct omap_gpmc_cs_file_s *f;
244 return omap_badwidth_write32(opaque, addr, value);
248 case 0x000: /* GPMC_REVISION */
249 case 0x014: /* GPMC_SYSSTATUS */
250 case 0x054: /* GPMC_STATUS */
251 case 0x1f0: /* GPMC_PREFETCH_STATUS */
252 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
253 case 0x234: /* GPMC_PSA_LSB */
254 case 0x238: /* GPMC_PSA_MSB */
258 case 0x010: /* GPMC_SYSCONFIG */
259 if ((value >> 3) == 0x3)
260 fprintf(stderr, "%s: bad SDRAM idle mode %"PRIi64"\n",
261 __FUNCTION__, value >> 3);
264 s->sysconfig = value & 0x19;
267 case 0x018: /* GPMC_IRQSTATUS */
269 omap_gpmc_int_update(s);
272 case 0x01c: /* GPMC_IRQENABLE */
273 s->irqen = value & 0xf03;
274 omap_gpmc_int_update(s);
277 case 0x040: /* GPMC_TIMEOUT_CONTROL */
278 s->timeout = value & 0x1ff1;
281 case 0x044: /* GPMC_ERR_ADDRESS */
282 case 0x048: /* GPMC_ERR_TYPE */
285 case 0x050: /* GPMC_CONFIG */
286 s->config = value & 0xf13;
289 case 0x060 ... 0x1d4:
290 cs = (addr - 0x060) / 0x30;
294 case 0x60: /* GPMC_CONFIG1 */
295 f->config[0] = value & 0xffef3e13;
297 case 0x64: /* GPMC_CONFIG2 */
298 f->config[1] = value & 0x001f1f8f;
300 case 0x68: /* GPMC_CONFIG3 */
301 f->config[2] = value & 0x001f1f8f;
303 case 0x6c: /* GPMC_CONFIG4 */
304 f->config[3] = value & 0x1f8f1f8f;
306 case 0x70: /* GPMC_CONFIG5 */
307 f->config[4] = value & 0x0f1f1f1f;
309 case 0x74: /* GPMC_CONFIG6 */
310 f->config[5] = value & 0x00000fcf;
312 case 0x78: /* GPMC_CONFIG7 */
313 if ((f->config[6] ^ value) & 0xf7f) {
314 if (f->config[6] & (1 << 6)) /* CSVALID */
315 omap_gpmc_cs_unmap(f);
316 if (value & (1 << 6)) /* CSVALID */
317 omap_gpmc_cs_map(f, value & 0x1f, /* MASKADDR */
318 (value >> 8 & 0xf)); /* BASEADDR */
320 f->config[6] = value & 0x00000f7f;
322 case 0x7c: /* GPMC_NAND_COMMAND */
323 case 0x80: /* GPMC_NAND_ADDRESS */
324 case 0x84: /* GPMC_NAND_DATA */
332 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
333 s->prefconfig[0] = value & 0x7f8f7fbf;
334 /* TODO: update interrupts, fifos, dmas */
337 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
338 s->prefconfig[1] = value & 0x3fff;
341 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
342 s->prefcontrol = value & 1;
343 if (s->prefcontrol) {
344 if (s->prefconfig[0] & 1)
352 case 0x1f4: /* GPMC_ECC_CONFIG */
355 case 0x1f8: /* GPMC_ECC_CONTROL */
356 if (value & (1 << 8))
357 for (cs = 0; cs < 9; cs ++)
358 ecc_reset(&s->ecc[cs]);
359 s->ecc_ptr = value & 0xf;
360 if (s->ecc_ptr == 0 || s->ecc_ptr > 9) {
365 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
366 s->ecc_cfg = value & 0x3fcff1ff;
368 case 0x230: /* GPMC_TESTMODE_CTRL */
370 fprintf(stderr, "%s: test mode enable attempt\n", __FUNCTION__);
380 static const MemoryRegionOps omap_gpmc_ops = {
381 .read = omap_gpmc_read,
382 .write = omap_gpmc_write,
383 .endianness = DEVICE_NATIVE_ENDIAN,
386 struct omap_gpmc_s *omap_gpmc_init(target_phys_addr_t base, qemu_irq irq)
388 struct omap_gpmc_s *s = (struct omap_gpmc_s *)
389 g_malloc0(sizeof(struct omap_gpmc_s));
391 memory_region_init_io(&s->iomem, &omap_gpmc_ops, s, "omap-gpmc", 0x1000);
392 memory_region_add_subregion(get_system_memory(), base, &s->iomem);
399 void omap_gpmc_attach(struct omap_gpmc_s *s, int cs, MemoryRegion *iomem)
401 struct omap_gpmc_cs_file_s *f;
404 if (cs < 0 || cs >= 8) {
405 fprintf(stderr, "%s: bad chip-select %i\n", __FUNCTION__, cs);
412 if (f->config[6] & (1 << 6)) /* CSVALID */
413 omap_gpmc_cs_map(f, f->config[6] & 0x1f, /* MASKADDR */
414 (f->config[6] >> 8 & 0xf)); /* BASEADDR */