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_s *s, int cs)
59 struct omap_gpmc_cs_file_s *f = &s->cs_file[cs];
60 uint32_t mask = (f->config[6] >> 8) & 0xf;
61 uint32_t base = f->config[6] & 0x3f;
68 if (!(f->config[6] & (1 << 6))) {
69 /* Do nothing unless CSVALID */
73 /* TODO: check for overlapping regions and report access errors */
74 if ((mask != 0x8 && mask != 0xc && mask != 0xe && mask != 0xf) ||
75 (base & 0x0f & ~mask)) {
76 fprintf(stderr, "%s: wrong cs address mapping/decoding!\n",
82 size = (0x0fffffff & ~(mask << 24)) + 1;
83 /* TODO: rather than setting the size of the mapping (which should be
84 * constant), the mask should cause wrapping of the address space, so
85 * that the same memory becomes accessible at every <i>size</i> bytes
86 * starting from <i>base</i>. */
87 memory_region_init(&f->container, "omap-gpmc-file", size);
88 memory_region_add_subregion(&f->container, 0, f->iomem);
89 memory_region_add_subregion(get_system_memory(), base,
93 static void omap_gpmc_cs_unmap(struct omap_gpmc_s *s, int cs)
95 struct omap_gpmc_cs_file_s *f = &s->cs_file[cs];
96 if (!(f->config[6] & (1 << 6))) {
97 /* Do nothing unless CSVALID */
104 memory_region_del_subregion(get_system_memory(), &f->container);
105 memory_region_del_subregion(&f->container, f->iomem);
106 memory_region_destroy(&f->container);
109 void omap_gpmc_reset(struct omap_gpmc_s *s)
116 omap_gpmc_int_update(s);
119 s->prefconfig[0] = 0x00004000;
120 s->prefconfig[1] = 0x00000000;
124 for (i = 0; i < 8; i ++) {
125 omap_gpmc_cs_unmap(s, i);
126 s->cs_file[i].config[1] = 0x101001;
127 s->cs_file[i].config[2] = 0x020201;
128 s->cs_file[i].config[3] = 0x10031003;
129 s->cs_file[i].config[4] = 0x10f1111;
130 s->cs_file[i].config[5] = 0;
131 s->cs_file[i].config[6] = 0xf00 | (i ? 0 : 1 << 6);
133 s->cs_file[i].config[6] = 0xf00;
134 /* In theory we could probe attached devices for some CFG1
135 * bits here, but we just retain them across resets as they
136 * were set initially by omap_gpmc_attach().
139 s->cs_file[i].config[0] &= 0x00433e00;
140 s->cs_file[i].config[6] |= 1 << 6; /* CSVALID */
141 omap_gpmc_cs_map(s, i);
143 s->cs_file[i].config[0] &= 0x00403c00;
148 s->ecc_cfg = 0x3fcff000;
149 for (i = 0; i < 9; i ++)
150 ecc_reset(&s->ecc[i]);
153 static uint64_t omap_gpmc_read(void *opaque, target_phys_addr_t addr,
156 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
158 struct omap_gpmc_cs_file_s *f;
161 return omap_badwidth_read32(opaque, addr);
165 case 0x000: /* GPMC_REVISION */
168 case 0x010: /* GPMC_SYSCONFIG */
171 case 0x014: /* GPMC_SYSSTATUS */
172 return 1; /* RESETDONE */
174 case 0x018: /* GPMC_IRQSTATUS */
177 case 0x01c: /* GPMC_IRQENABLE */
180 case 0x040: /* GPMC_TIMEOUT_CONTROL */
183 case 0x044: /* GPMC_ERR_ADDRESS */
184 case 0x048: /* GPMC_ERR_TYPE */
187 case 0x050: /* GPMC_CONFIG */
190 case 0x054: /* GPMC_STATUS */
193 case 0x060 ... 0x1d4:
194 cs = (addr - 0x060) / 0x30;
198 case 0x60: /* GPMC_CONFIG1 */
200 case 0x64: /* GPMC_CONFIG2 */
202 case 0x68: /* GPMC_CONFIG3 */
204 case 0x6c: /* GPMC_CONFIG4 */
206 case 0x70: /* GPMC_CONFIG5 */
208 case 0x74: /* GPMC_CONFIG6 */
210 case 0x78: /* GPMC_CONFIG7 */
212 case 0x84: /* GPMC_NAND_DATA */
217 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
218 return s->prefconfig[0];
219 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
220 return s->prefconfig[1];
221 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
222 return s->prefcontrol;
223 case 0x1f0: /* GPMC_PREFETCH_STATUS */
224 return (s->preffifo << 24) |
226 ((s->prefconfig[0] >> 8) & 0x7f) ? 1 : 0) << 16) |
229 case 0x1f4: /* GPMC_ECC_CONFIG */
231 case 0x1f8: /* GPMC_ECC_CONTROL */
233 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
235 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
236 cs = (addr & 0x1f) >> 2;
237 /* TODO: check correctness */
239 ((s->ecc[cs].cp & 0x07) << 0) |
240 ((s->ecc[cs].cp & 0x38) << 13) |
241 ((s->ecc[cs].lp[0] & 0x1ff) << 3) |
242 ((s->ecc[cs].lp[1] & 0x1ff) << 19);
244 case 0x230: /* GPMC_TESTMODE_CTRL */
246 case 0x234: /* GPMC_PSA_LSB */
247 case 0x238: /* GPMC_PSA_MSB */
255 static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
256 uint64_t value, unsigned size)
258 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
260 struct omap_gpmc_cs_file_s *f;
263 return omap_badwidth_write32(opaque, addr, value);
267 case 0x000: /* GPMC_REVISION */
268 case 0x014: /* GPMC_SYSSTATUS */
269 case 0x054: /* GPMC_STATUS */
270 case 0x1f0: /* GPMC_PREFETCH_STATUS */
271 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
272 case 0x234: /* GPMC_PSA_LSB */
273 case 0x238: /* GPMC_PSA_MSB */
277 case 0x010: /* GPMC_SYSCONFIG */
278 if ((value >> 3) == 0x3)
279 fprintf(stderr, "%s: bad SDRAM idle mode %"PRIi64"\n",
280 __FUNCTION__, value >> 3);
283 s->sysconfig = value & 0x19;
286 case 0x018: /* GPMC_IRQSTATUS */
288 omap_gpmc_int_update(s);
291 case 0x01c: /* GPMC_IRQENABLE */
292 s->irqen = value & 0xf03;
293 omap_gpmc_int_update(s);
296 case 0x040: /* GPMC_TIMEOUT_CONTROL */
297 s->timeout = value & 0x1ff1;
300 case 0x044: /* GPMC_ERR_ADDRESS */
301 case 0x048: /* GPMC_ERR_TYPE */
304 case 0x050: /* GPMC_CONFIG */
305 s->config = value & 0xf13;
308 case 0x060 ... 0x1d4:
309 cs = (addr - 0x060) / 0x30;
313 case 0x60: /* GPMC_CONFIG1 */
314 f->config[0] = value & 0xffef3e13;
316 case 0x64: /* GPMC_CONFIG2 */
317 f->config[1] = value & 0x001f1f8f;
319 case 0x68: /* GPMC_CONFIG3 */
320 f->config[2] = value & 0x001f1f8f;
322 case 0x6c: /* GPMC_CONFIG4 */
323 f->config[3] = value & 0x1f8f1f8f;
325 case 0x70: /* GPMC_CONFIG5 */
326 f->config[4] = value & 0x0f1f1f1f;
328 case 0x74: /* GPMC_CONFIG6 */
329 f->config[5] = value & 0x00000fcf;
331 case 0x78: /* GPMC_CONFIG7 */
332 if ((f->config[6] ^ value) & 0xf7f) {
333 omap_gpmc_cs_unmap(s, cs);
334 f->config[6] = value & 0x00000f7f;
335 omap_gpmc_cs_map(s, cs);
338 case 0x7c: /* GPMC_NAND_COMMAND */
339 case 0x80: /* GPMC_NAND_ADDRESS */
340 case 0x84: /* GPMC_NAND_DATA */
348 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
349 s->prefconfig[0] = value & 0x7f8f7fbf;
350 /* TODO: update interrupts, fifos, dmas */
353 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
354 s->prefconfig[1] = value & 0x3fff;
357 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
358 s->prefcontrol = value & 1;
359 if (s->prefcontrol) {
360 if (s->prefconfig[0] & 1)
368 case 0x1f4: /* GPMC_ECC_CONFIG */
371 case 0x1f8: /* GPMC_ECC_CONTROL */
372 if (value & (1 << 8))
373 for (cs = 0; cs < 9; cs ++)
374 ecc_reset(&s->ecc[cs]);
375 s->ecc_ptr = value & 0xf;
376 if (s->ecc_ptr == 0 || s->ecc_ptr > 9) {
381 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
382 s->ecc_cfg = value & 0x3fcff1ff;
384 case 0x230: /* GPMC_TESTMODE_CTRL */
386 fprintf(stderr, "%s: test mode enable attempt\n", __FUNCTION__);
396 static const MemoryRegionOps omap_gpmc_ops = {
397 .read = omap_gpmc_read,
398 .write = omap_gpmc_write,
399 .endianness = DEVICE_NATIVE_ENDIAN,
402 struct omap_gpmc_s *omap_gpmc_init(target_phys_addr_t base, qemu_irq irq)
404 struct omap_gpmc_s *s = (struct omap_gpmc_s *)
405 g_malloc0(sizeof(struct omap_gpmc_s));
407 memory_region_init_io(&s->iomem, &omap_gpmc_ops, s, "omap-gpmc", 0x1000);
408 memory_region_add_subregion(get_system_memory(), base, &s->iomem);
416 void omap_gpmc_attach(struct omap_gpmc_s *s, int cs, MemoryRegion *iomem)
418 struct omap_gpmc_cs_file_s *f;
421 if (cs < 0 || cs >= 8) {
422 fprintf(stderr, "%s: bad chip-select %i\n", __FUNCTION__, cs);
427 omap_gpmc_cs_unmap(s, cs);
429 omap_gpmc_cs_map(s, cs);