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 /* General-Purpose Memory Controller */
34 uint32_t prefconfig[2];
38 struct omap_gpmc_cs_file_s {
40 target_phys_addr_t base;
43 void (*base_update)(void *opaque, target_phys_addr_t new);
44 void (*unmap)(void *opaque);
53 static void omap_gpmc_int_update(struct omap_gpmc_s *s)
55 qemu_set_irq(s->irq, s->irqen & s->irqst);
58 static void omap_gpmc_cs_map(struct omap_gpmc_cs_file_s *f, int base, int mask)
60 /* TODO: check for overlapping regions and report access errors */
61 if ((mask != 0x8 && mask != 0xc && mask != 0xe && mask != 0xf) ||
62 (base < 0 || base >= 0x40) ||
63 (base & 0x0f & ~mask)) {
64 fprintf(stderr, "%s: wrong cs address mapping/decoding!\n",
73 f->size = (0x0fffffff & ~(mask << 24)) + 1;
74 /* TODO: rather than setting the size of the mapping (which should be
75 * constant), the mask should cause wrapping of the address space, so
76 * that the same memory becomes accessible at every <i>size</i> bytes
77 * starting from <i>base</i>. */
79 cpu_register_physical_memory(f->base, f->size, f->iomemtype);
82 f->base_update(f->opaque, f->base);
85 static void omap_gpmc_cs_unmap(struct omap_gpmc_cs_file_s *f)
91 cpu_register_physical_memory(f->base, f->size, IO_MEM_UNASSIGNED);
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 */
127 omap_gpmc_cs_map(s->cs_file, 0, 0xf);
130 s->ecc_cfg = 0x3fcff000;
131 for (i = 0; i < 9; i ++)
132 ecc_reset(&s->ecc[i]);
135 static uint32_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 case 0x000: /* GPMC_REVISION */
145 case 0x010: /* GPMC_SYSCONFIG */
148 case 0x014: /* GPMC_SYSSTATUS */
149 return 1; /* RESETDONE */
151 case 0x018: /* GPMC_IRQSTATUS */
154 case 0x01c: /* GPMC_IRQENABLE */
157 case 0x040: /* GPMC_TIMEOUT_CONTROL */
160 case 0x044: /* GPMC_ERR_ADDRESS */
161 case 0x048: /* GPMC_ERR_TYPE */
164 case 0x050: /* GPMC_CONFIG */
167 case 0x054: /* GPMC_STATUS */
170 case 0x060 ... 0x1d4:
171 cs = (addr - 0x060) / 0x30;
175 case 0x60: /* GPMC_CONFIG1 */
177 case 0x64: /* GPMC_CONFIG2 */
179 case 0x68: /* GPMC_CONFIG3 */
181 case 0x6c: /* GPMC_CONFIG4 */
183 case 0x70: /* GPMC_CONFIG5 */
185 case 0x74: /* GPMC_CONFIG6 */
187 case 0x78: /* GPMC_CONFIG7 */
189 case 0x84: /* GPMC_NAND_DATA */
194 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
195 return s->prefconfig[0];
196 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
197 return s->prefconfig[1];
198 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
199 return s->prefcontrol;
200 case 0x1f0: /* GPMC_PREFETCH_STATUS */
201 return (s->preffifo << 24) |
203 ((s->prefconfig[0] >> 8) & 0x7f) ? 1 : 0) << 16) |
206 case 0x1f4: /* GPMC_ECC_CONFIG */
208 case 0x1f8: /* GPMC_ECC_CONTROL */
210 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
212 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
213 cs = (addr & 0x1f) >> 2;
214 /* TODO: check correctness */
216 ((s->ecc[cs].cp & 0x07) << 0) |
217 ((s->ecc[cs].cp & 0x38) << 13) |
218 ((s->ecc[cs].lp[0] & 0x1ff) << 3) |
219 ((s->ecc[cs].lp[1] & 0x1ff) << 19);
221 case 0x230: /* GPMC_TESTMODE_CTRL */
223 case 0x234: /* GPMC_PSA_LSB */
224 case 0x238: /* GPMC_PSA_MSB */
232 static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
235 struct omap_gpmc_s *s = (struct omap_gpmc_s *) opaque;
237 struct omap_gpmc_cs_file_s *f;
240 case 0x000: /* GPMC_REVISION */
241 case 0x014: /* GPMC_SYSSTATUS */
242 case 0x054: /* GPMC_STATUS */
243 case 0x1f0: /* GPMC_PREFETCH_STATUS */
244 case 0x200 ... 0x220: /* GPMC_ECC_RESULT */
245 case 0x234: /* GPMC_PSA_LSB */
246 case 0x238: /* GPMC_PSA_MSB */
250 case 0x010: /* GPMC_SYSCONFIG */
251 if ((value >> 3) == 0x3)
252 fprintf(stderr, "%s: bad SDRAM idle mode %i\n",
253 __FUNCTION__, value >> 3);
256 s->sysconfig = value & 0x19;
259 case 0x018: /* GPMC_IRQSTATUS */
261 omap_gpmc_int_update(s);
264 case 0x01c: /* GPMC_IRQENABLE */
265 s->irqen = value & 0xf03;
266 omap_gpmc_int_update(s);
269 case 0x040: /* GPMC_TIMEOUT_CONTROL */
270 s->timeout = value & 0x1ff1;
273 case 0x044: /* GPMC_ERR_ADDRESS */
274 case 0x048: /* GPMC_ERR_TYPE */
277 case 0x050: /* GPMC_CONFIG */
278 s->config = value & 0xf13;
281 case 0x060 ... 0x1d4:
282 cs = (addr - 0x060) / 0x30;
286 case 0x60: /* GPMC_CONFIG1 */
287 f->config[0] = value & 0xffef3e13;
289 case 0x64: /* GPMC_CONFIG2 */
290 f->config[1] = value & 0x001f1f8f;
292 case 0x68: /* GPMC_CONFIG3 */
293 f->config[2] = value & 0x001f1f8f;
295 case 0x6c: /* GPMC_CONFIG4 */
296 f->config[3] = value & 0x1f8f1f8f;
298 case 0x70: /* GPMC_CONFIG5 */
299 f->config[4] = value & 0x0f1f1f1f;
301 case 0x74: /* GPMC_CONFIG6 */
302 f->config[5] = value & 0x00000fcf;
304 case 0x78: /* GPMC_CONFIG7 */
305 if ((f->config[6] ^ value) & 0xf7f) {
306 if (f->config[6] & (1 << 6)) /* CSVALID */
307 omap_gpmc_cs_unmap(f);
308 if (value & (1 << 6)) /* CSVALID */
309 omap_gpmc_cs_map(f, value & 0x1f, /* MASKADDR */
310 (value >> 8 & 0xf)); /* BASEADDR */
312 f->config[6] = value & 0x00000f7f;
314 case 0x7c: /* GPMC_NAND_COMMAND */
315 case 0x80: /* GPMC_NAND_ADDRESS */
316 case 0x84: /* GPMC_NAND_DATA */
324 case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
325 s->prefconfig[0] = value & 0x7f8f7fbf;
326 /* TODO: update interrupts, fifos, dmas */
329 case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
330 s->prefconfig[1] = value & 0x3fff;
333 case 0x1ec: /* GPMC_PREFETCH_CONTROL */
334 s->prefcontrol = value & 1;
335 if (s->prefcontrol) {
336 if (s->prefconfig[0] & 1)
344 case 0x1f4: /* GPMC_ECC_CONFIG */
347 case 0x1f8: /* GPMC_ECC_CONTROL */
348 if (value & (1 << 8))
349 for (cs = 0; cs < 9; cs ++)
350 ecc_reset(&s->ecc[cs]);
351 s->ecc_ptr = value & 0xf;
352 if (s->ecc_ptr == 0 || s->ecc_ptr > 9) {
357 case 0x1fc: /* GPMC_ECC_SIZE_CONFIG */
358 s->ecc_cfg = value & 0x3fcff1ff;
360 case 0x230: /* GPMC_TESTMODE_CTRL */
362 fprintf(stderr, "%s: test mode enable attempt\n", __FUNCTION__);
372 static CPUReadMemoryFunc * const omap_gpmc_readfn[] = {
373 omap_badwidth_read32, /* TODO */
374 omap_badwidth_read32, /* TODO */
378 static CPUWriteMemoryFunc * const omap_gpmc_writefn[] = {
379 omap_badwidth_write32, /* TODO */
380 omap_badwidth_write32, /* TODO */
384 struct omap_gpmc_s *omap_gpmc_init(target_phys_addr_t base, qemu_irq irq)
387 struct omap_gpmc_s *s = (struct omap_gpmc_s *)
388 qemu_mallocz(sizeof(struct omap_gpmc_s));
392 iomemtype = cpu_register_io_memory(omap_gpmc_readfn,
393 omap_gpmc_writefn, s, DEVICE_NATIVE_ENDIAN);
394 cpu_register_physical_memory(base, 0x1000, iomemtype);
399 void omap_gpmc_attach(struct omap_gpmc_s *s, int cs, int iomemtype,
400 void (*base_upd)(void *opaque, target_phys_addr_t new),
401 void (*unmap)(void *opaque), void *opaque)
403 struct omap_gpmc_cs_file_s *f;
405 if (cs < 0 || cs >= 8) {
406 fprintf(stderr, "%s: bad chip-select %i\n", __FUNCTION__, cs);
411 f->iomemtype = iomemtype;
412 f->base_update = base_upd;
416 if (f->config[6] & (1 << 6)) /* CSVALID */
417 omap_gpmc_cs_map(f, f->config[6] & 0x1f, /* MASKADDR */
418 (f->config[6] >> 8 & 0xf)); /* BASEADDR */