Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/arch/mips/txx9/rbtx4939/setup.c

  1 /*
  2  * Toshiba RBTX4939 setup routines.
  3  * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
  4  *          and RBTX49xx patch from CELF patch archive.
  5  *
  6  * Copyright (C) 2000-2001,2005-2007 Toshiba Corporation
  7  * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
  8  * terms of the GNU General Public License version 2. This program is
  9  * licensed "as is" without any warranty of any kind, whether express
 10  * or implied.
 11  */
 12 #include <linux/init.h>
 13 #include <linux/kernel.h>
 14 #include <linux/types.h>
 15 #include <linux/slab.h>
 16 #include <linux/export.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/leds.h>
 19 #include <linux/interrupt.h>
 20 #include <linux/smc91x.h>
 21 #include <linux/mtd/mtd.h>
 22 #include <linux/mtd/partitions.h>
 23 #include <linux/mtd/map.h>
 24 #include <asm/reboot.h>
 25 #include <asm/txx9/generic.h>
 26 #include <asm/txx9/pci.h>
 27 #include <asm/txx9/rbtx4939.h>
 28 
 29 static void rbtx4939_machine_restart(char *command)
 30 {
 31         local_irq_disable();
 32         writeb(1, rbtx4939_reseten_addr);
 33         writeb(1, rbtx4939_softreset_addr);
 34         while (1)
 35                 ;
 36 }
 37 
 38 static void __init rbtx4939_time_init(void)
 39 {
 40         tx4939_time_init(0);
 41 }
 42 
 43 #if defined(__BIG_ENDIAN) && IS_ENABLED(CONFIG_SMC91X)
 44 #define HAVE_RBTX4939_IOSWAB
 45 #define IS_CE1_ADDR(addr) \
 46         ((((unsigned long)(addr) - IO_BASE) & 0xfff00000) == TXX9_CE(1))
 47 static u16 rbtx4939_ioswabw(volatile u16 *a, u16 x)
 48 {
 49         return IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
 50 }
 51 static u16 rbtx4939_mem_ioswabw(volatile u16 *a, u16 x)
 52 {
 53         return !IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
 54 }
 55 #endif /* __BIG_ENDIAN && CONFIG_SMC91X */
 56 
 57 static void __init rbtx4939_pci_setup(void)
 58 {
 59 #ifdef CONFIG_PCI
 60         int extarb = !(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB);
 61         struct pci_controller *c = &txx9_primary_pcic;
 62 
 63         register_pci_controller(c);
 64 
 65         tx4939_report_pciclk();
 66         tx4927_pcic_setup(tx4939_pcicptr, c, extarb);
 67         if (!(__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ATA1MODE) &&
 68             (__raw_readq(&tx4939_ccfgptr->pcfg) &
 69              (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE))) {
 70                 tx4939_report_pci1clk();
 71 
 72                 /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
 73                 c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
 74                 register_pci_controller(c);
 75                 tx4927_pcic_setup(tx4939_pcic1ptr, c, 0);
 76         }
 77 
 78         tx4939_setup_pcierr_irq();
 79 #endif /* CONFIG_PCI */
 80 }
 81 
 82 static unsigned long long default_ebccr[] __initdata = {
 83         0x01c0000000007608ULL, /* 64M ROM */
 84         0x017f000000007049ULL, /* 1M IOC */
 85         0x0180000000408608ULL, /* ISA */
 86         0,
 87 };
 88 
 89 static void __init rbtx4939_ebusc_setup(void)
 90 {
 91         int i;
 92         unsigned int sp;
 93 
 94         /* use user-configured speed */
 95         sp = TX4939_EBUSC_CR(0) & 0x30;
 96         default_ebccr[0] |= sp;
 97         default_ebccr[1] |= sp;
 98         default_ebccr[2] |= sp;
 99         /* initialise by myself */
100         for (i = 0; i < ARRAY_SIZE(default_ebccr); i++) {
101                 if (default_ebccr[i])
102                         ____raw_writeq(default_ebccr[i],
103                                        &tx4939_ebuscptr->cr[i]);
104                 else
105                         ____raw_writeq(____raw_readq(&tx4939_ebuscptr->cr[i])
106                                        & ~8,
107                                        &tx4939_ebuscptr->cr[i]);
108         }
109 }
110 
111 static void __init rbtx4939_update_ioc_pen(void)
112 {
113         __u64 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
114         __u64 ccfg = ____raw_readq(&tx4939_ccfgptr->ccfg);
115         __u8 pe1 = readb(rbtx4939_pe1_addr);
116         __u8 pe2 = readb(rbtx4939_pe2_addr);
117         __u8 pe3 = readb(rbtx4939_pe3_addr);
118         if (pcfg & TX4939_PCFG_ATA0MODE)
119                 pe1 |= RBTX4939_PE1_ATA(0);
120         else
121                 pe1 &= ~RBTX4939_PE1_ATA(0);
122         if (pcfg & TX4939_PCFG_ATA1MODE) {
123                 pe1 |= RBTX4939_PE1_ATA(1);
124                 pe1 &= ~(RBTX4939_PE1_RMII(0) | RBTX4939_PE1_RMII(1));
125         } else {
126                 pe1 &= ~RBTX4939_PE1_ATA(1);
127                 if (pcfg & TX4939_PCFG_ET0MODE)
128                         pe1 |= RBTX4939_PE1_RMII(0);
129                 else
130                         pe1 &= ~RBTX4939_PE1_RMII(0);
131                 if (pcfg & TX4939_PCFG_ET1MODE)
132                         pe1 |= RBTX4939_PE1_RMII(1);
133                 else
134                         pe1 &= ~RBTX4939_PE1_RMII(1);
135         }
136         if (ccfg & TX4939_CCFG_PTSEL)
137                 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
138                          RBTX4939_PE3_VP_S);
139         else {
140                 __u64 vmode = pcfg &
141                         (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE);
142                 if (vmode == 0)
143                         pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
144                                  RBTX4939_PE3_VP_S);
145                 else if (vmode == TX4939_PCFG_VPSMODE) {
146                         pe3 |= RBTX4939_PE3_VP_P;
147                         pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_S);
148                 } else if (vmode == TX4939_PCFG_VSSMODE) {
149                         pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_S;
150                         pe3 &= ~RBTX4939_PE3_VP_P;
151                 } else {
152                         pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_P;
153                         pe3 &= ~RBTX4939_PE3_VP_S;
154                 }
155         }
156         if (pcfg & TX4939_PCFG_SPIMODE) {
157                 if (pcfg & TX4939_PCFG_SIO2MODE_GPIO)
158                         pe2 &= ~(RBTX4939_PE2_SIO2 | RBTX4939_PE2_SIO0);
159                 else {
160                         if (pcfg & TX4939_PCFG_SIO2MODE_SIO2) {
161                                 pe2 |= RBTX4939_PE2_SIO2;
162                                 pe2 &= ~RBTX4939_PE2_SIO0;
163                         } else {
164                                 pe2 |= RBTX4939_PE2_SIO0;
165                                 pe2 &= ~RBTX4939_PE2_SIO2;
166                         }
167                 }
168                 if (pcfg & TX4939_PCFG_SIO3MODE)
169                         pe2 |= RBTX4939_PE2_SIO3;
170                 else
171                         pe2 &= ~RBTX4939_PE2_SIO3;
172                 pe2 &= ~RBTX4939_PE2_SPI;
173         } else {
174                 pe2 |= RBTX4939_PE2_SPI;
175                 pe2 &= ~(RBTX4939_PE2_SIO3 | RBTX4939_PE2_SIO2 |
176                          RBTX4939_PE2_SIO0);
177         }
178         if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_GPIO)
179                 pe2 |= RBTX4939_PE2_GPIO;
180         else
181                 pe2 &= ~RBTX4939_PE2_GPIO;
182         writeb(pe1, rbtx4939_pe1_addr);
183         writeb(pe2, rbtx4939_pe2_addr);
184         writeb(pe3, rbtx4939_pe3_addr);
185 }
186 
187 #define RBTX4939_MAX_7SEGLEDS   8
188 
189 #if IS_ENABLED(CONFIG_LEDS_CLASS)
190 static u8 led_val[RBTX4939_MAX_7SEGLEDS];
191 struct rbtx4939_led_data {
192         struct led_classdev cdev;
193         char name[32];
194         unsigned int num;
195 };
196 
197 /* Use "dot" in 7seg LEDs */
198 static void rbtx4939_led_brightness_set(struct led_classdev *led_cdev,
199                                         enum led_brightness value)
200 {
201         struct rbtx4939_led_data *led_dat =
202                 container_of(led_cdev, struct rbtx4939_led_data, cdev);
203         unsigned int num = led_dat->num;
204         unsigned long flags;
205 
206         local_irq_save(flags);
207         led_val[num] = (led_val[num] & 0x7f) | (value ? 0x80 : 0);
208         writeb(led_val[num], rbtx4939_7seg_addr(num / 4, num % 4));
209         local_irq_restore(flags);
210 }
211 
212 static int __init rbtx4939_led_probe(struct platform_device *pdev)
213 {
214         struct rbtx4939_led_data *leds_data;
215         int i;
216         static char *default_triggers[] __initdata = {
217                 "heartbeat",
218                 "ide-disk",
219                 "nand-disk",
220         };
221 
222         leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS,
223                             GFP_KERNEL);
224         if (!leds_data)
225                 return -ENOMEM;
226         for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++) {
227                 int rc;
228                 struct rbtx4939_led_data *led_dat = &leds_data[i];
229 
230                 led_dat->num = i;
231                 led_dat->cdev.brightness_set = rbtx4939_led_brightness_set;
232                 sprintf(led_dat->name, "rbtx4939:amber:%u", i);
233                 led_dat->cdev.name = led_dat->name;
234                 if (i < ARRAY_SIZE(default_triggers))
235                         led_dat->cdev.default_trigger = default_triggers[i];
236                 rc = led_classdev_register(&pdev->dev, &led_dat->cdev);
237                 if (rc < 0)
238                         return rc;
239                 led_dat->cdev.brightness_set(&led_dat->cdev, 0);
240         }
241         return 0;
242 
243 }
244 
245 static struct platform_driver rbtx4939_led_driver = {
246         .driver  = {
247                 .name = "rbtx4939-led",
248                 .owner = THIS_MODULE,
249         },
250 };
251 
252 static void __init rbtx4939_led_setup(void)
253 {
254         platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
255         platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
256 }
257 #else
258 static inline void rbtx4939_led_setup(void)
259 {
260 }
261 #endif
262 
263 static void __rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
264 {
265 #if IS_ENABLED(CONFIG_LEDS_CLASS)
266         unsigned long flags;
267         local_irq_save(flags);
268         /* bit7: reserved for LED class */
269         led_val[pos] = (led_val[pos] & 0x80) | (val & 0x7f);
270         val = led_val[pos];
271         local_irq_restore(flags);
272 #endif
273         writeb(val, rbtx4939_7seg_addr(pos / 4, pos % 4));
274 }
275 
276 static void rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
277 {
278         /* convert from map_to_seg7() notation */
279         val = (val & 0x88) |
280                 ((val & 0x40) >> 6) |
281                 ((val & 0x20) >> 4) |
282                 ((val & 0x10) >> 2) |
283                 ((val & 0x04) << 2) |
284                 ((val & 0x02) << 4) |
285                 ((val & 0x01) << 6);
286         __rbtx4939_7segled_putc(pos, val);
287 }
288 
289 #if IS_ENABLED(CONFIG_MTD_RBTX4939)
290 /* special mapping for boot rom */
291 static unsigned long rbtx4939_flash_fixup_ofs(unsigned long ofs)
292 {
293         u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
294         unsigned char shift;
295 
296         if (bdipsw & 8) {
297                 /* BOOT Mode: USER ROM1 / USER ROM2 */
298                 shift = bdipsw & 3;
299                 /* rotate A[23:22] */
300                 return (ofs & ~0xc00000) | ((((ofs >> 22) + shift) & 3) << 22);
301         }
302 #ifdef __BIG_ENDIAN
303         if (bdipsw == 0)
304                 /* BOOT Mode: Monitor ROM */
305                 ofs ^= 0x400000;        /* swap A[22] */
306 #endif
307         return ofs;
308 }
309 
310 static map_word rbtx4939_flash_read16(struct map_info *map, unsigned long ofs)
311 {
312         map_word r;
313 
314         ofs = rbtx4939_flash_fixup_ofs(ofs);
315         r.x[0] = __raw_readw(map->virt + ofs);
316         return r;
317 }
318 
319 static void rbtx4939_flash_write16(struct map_info *map, const map_word datum,
320                                    unsigned long ofs)
321 {
322         ofs = rbtx4939_flash_fixup_ofs(ofs);
323         __raw_writew(datum.x[0], map->virt + ofs);
324         mb();   /* see inline_map_write() in mtd/map.h */
325 }
326 
327 static void rbtx4939_flash_copy_from(struct map_info *map, void *to,
328                                      unsigned long from, ssize_t len)
329 {
330         u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
331         unsigned char shift;
332         ssize_t curlen;
333 
334         from += (unsigned long)map->virt;
335         if (bdipsw & 8) {
336                 /* BOOT Mode: USER ROM1 / USER ROM2 */
337                 shift = bdipsw & 3;
338                 while (len) {
339                         curlen = min_t(unsigned long, len,
340                                      0x400000 - (from & (0x400000 - 1)));
341                         memcpy(to,
342                                (void *)((from & ~0xc00000) |
343                                         ((((from >> 22) + shift) & 3) << 22)),
344                                curlen);
345                         len -= curlen;
346                         from += curlen;
347                         to += curlen;
348                 }
349                 return;
350         }
351 #ifdef __BIG_ENDIAN
352         if (bdipsw == 0) {
353                 /* BOOT Mode: Monitor ROM */
354                 while (len) {
355                         curlen = min_t(unsigned long, len,
356                                      0x400000 - (from & (0x400000 - 1)));
357                         memcpy(to, (void *)(from ^ 0x400000), curlen);
358                         len -= curlen;
359                         from += curlen;
360                         to += curlen;
361                 }
362                 return;
363         }
364 #endif
365         memcpy(to, (void *)from, len);
366 }
367 
368 static void rbtx4939_flash_map_init(struct map_info *map)
369 {
370         map->read = rbtx4939_flash_read16;
371         map->write = rbtx4939_flash_write16;
372         map->copy_from = rbtx4939_flash_copy_from;
373 }
374 
375 static void __init rbtx4939_mtd_init(void)
376 {
377         static struct {
378                 struct platform_device dev;
379                 struct resource res;
380                 struct rbtx4939_flash_data data;
381         } pdevs[4];
382         int i;
383         static char names[4][8];
384         static struct mtd_partition parts[4];
385         struct rbtx4939_flash_data *boot_pdata = &pdevs[0].data;
386         u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
387 
388         if (bdipsw & 8) {
389                 /* BOOT Mode: USER ROM1 / USER ROM2 */
390                 boot_pdata->nr_parts = 4;
391                 for (i = 0; i < boot_pdata->nr_parts; i++) {
392                         sprintf(names[i], "img%d", 4 - i);
393                         parts[i].name = names[i];
394                         parts[i].size = 0x400000;
395                         parts[i].offset = MTDPART_OFS_NXTBLK;
396                 }
397         } else if (bdipsw == 0) {
398                 /* BOOT Mode: Monitor ROM */
399                 boot_pdata->nr_parts = 2;
400                 strcpy(names[0], "big");
401                 strcpy(names[1], "little");
402                 for (i = 0; i < boot_pdata->nr_parts; i++) {
403                         parts[i].name = names[i];
404                         parts[i].size = 0x400000;
405                         parts[i].offset = MTDPART_OFS_NXTBLK;
406                 }
407         } else {
408                 /* BOOT Mode: ROM Emulator */
409                 boot_pdata->nr_parts = 2;
410                 parts[0].name = "boot";
411                 parts[0].offset = 0xc00000;
412                 parts[0].size = 0x400000;
413                 parts[1].name = "user";
414                 parts[1].offset = 0;
415                 parts[1].size = 0xc00000;
416         }
417         boot_pdata->parts = parts;
418         boot_pdata->map_init = rbtx4939_flash_map_init;
419 
420         for (i = 0; i < ARRAY_SIZE(pdevs); i++) {
421                 struct resource *r = &pdevs[i].res;
422                 struct platform_device *dev = &pdevs[i].dev;
423 
424                 r->start = 0x1f000000 - i * 0x1000000;
425                 r->end = r->start + 0x1000000 - 1;
426                 r->flags = IORESOURCE_MEM;
427                 pdevs[i].data.width = 2;
428                 dev->num_resources = 1;
429                 dev->resource = r;
430                 dev->id = i;
431                 dev->name = "rbtx4939-flash";
432                 dev->dev.platform_data = &pdevs[i].data;
433                 platform_device_register(dev);
434         }
435 }
436 #else
437 static void __init rbtx4939_mtd_init(void)
438 {
439 }
440 #endif
441 
442 static void __init rbtx4939_arch_init(void)
443 {
444         rbtx4939_pci_setup();
445 }
446 
447 static void __init rbtx4939_device_init(void)
448 {
449         unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
450         struct resource smc_res[] = {
451                 {
452                         .start  = smc_addr,
453                         .end    = smc_addr + 0x10 - 1,
454                         .flags  = IORESOURCE_MEM,
455                 }, {
456                         .start  = RBTX4939_IRQ_ETHER,
457                         /* override default irq flag defined in smc91x.h */
458                         .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
459                 },
460         };
461         struct smc91x_platdata smc_pdata = {
462                 .flags = SMC91X_USE_16BIT,
463         };
464         struct platform_device *pdev;
465 #if IS_ENABLED(CONFIG_TC35815)
466         int i, j;
467         unsigned char ethaddr[2][6];
468         u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
469 
470         for (i = 0; i < 2; i++) {
471                 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
472                 if (bdipsw == 0)
473                         memcpy(ethaddr[i], (void *)area, 6);
474                 else {
475                         u16 buf[3];
476                         if (bdipsw & 8)
477                                 area -= 0x03000000;
478                         else
479                                 area -= 0x01000000;
480                         for (j = 0; j < 3; j++)
481                                 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
482                         memcpy(ethaddr[i], buf, 6);
483                 }
484         }
485         tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
486 #endif
487         pdev = platform_device_alloc("smc91x", -1);
488         if (!pdev ||
489             platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
490             platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
491             platform_device_add(pdev))
492                 platform_device_put(pdev);
493         rbtx4939_mtd_init();
494         /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
495         tx4939_ndfmc_init(10, 35,
496                           (1 << 1) | (1 << 2),
497                           (1 << 2)); /* ch1:8bit, ch2:16bit */
498         rbtx4939_led_setup();
499         tx4939_wdt_init();
500         tx4939_ata_init();
501         tx4939_rtc_init();
502         tx4939_dmac_init(0, 2);
503         tx4939_aclc_init();
504         platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
505         tx4939_sramc_init();
506         tx4939_rng_init();
507 }
508 
509 static void __init rbtx4939_setup(void)
510 {
511         int i;
512 
513         rbtx4939_ebusc_setup();
514         /* always enable ATA0 */
515         txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
516         if (txx9_master_clock == 0)
517                 txx9_master_clock = 20000000;
518         tx4939_setup();
519         rbtx4939_update_ioc_pen();
520 #ifdef HAVE_RBTX4939_IOSWAB
521         ioswabw = rbtx4939_ioswabw;
522         __mem_ioswabw = rbtx4939_mem_ioswabw;
523 #endif
524 
525         _machine_restart = rbtx4939_machine_restart;
526 
527         txx9_7segled_init(RBTX4939_MAX_7SEGLEDS, rbtx4939_7segled_putc);
528         for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++)
529                 txx9_7segled_putc(i, '-');
530         pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
531                 readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
532                 readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
533 
534 #ifdef CONFIG_PCI
535         txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
536         txx9_board_pcibios_setup = tx4927_pcibios_setup;
537 #else
538         set_io_port_base(RBTX4939_ETHER_BASE);
539 #endif
540 
541         tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
542 }
543 
544 struct txx9_board_vec rbtx4939_vec __initdata = {
545         .system = "Toshiba RBTX4939",
546         .prom_init = rbtx4939_prom_init,
547         .mem_setup = rbtx4939_setup,
548         .irq_setup = rbtx4939_irq_setup,
549         .time_init = rbtx4939_time_init,
550         .device_init = rbtx4939_device_init,
551         .arch_init = rbtx4939_arch_init,
552 #ifdef CONFIG_PCI
553         .pci_map_irq = tx4939_pci_map_irq,
554 #endif
555 };
556 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us