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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/jmr3927/rbhma3100/setup.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/mips/jmr3927/rbhma3100/setup.c')
-rw-r--r--arch/mips/jmr3927/rbhma3100/setup.c510
1 files changed, 510 insertions, 0 deletions
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
new file mode 100644
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--- /dev/null
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -0,0 +1,510 @@
1/***********************************************************************
2 *
3 * Copyright 2001 MontaVista Software Inc.
4 * Author: MontaVista Software, Inc.
5 * ahennessy@mvista.com
6 *
7 * Based on arch/mips/ddb5xxx/ddb5477/setup.c
8 *
9 * Setup file for JMR3927.
10 *
11 * Copyright (C) 2000-2001 Toshiba Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
19 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
21 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * You should have received a copy of the GNU General Public License along
30 * with this program; if not, write to the Free Software Foundation, Inc.,
31 * 675 Mass Ave, Cambridge, MA 02139, USA.
32 *
33 ***********************************************************************
34 */
35
36#include <linux/config.h>
37#include <linux/init.h>
38#include <linux/kernel.h>
39#include <linux/kdev_t.h>
40#include <linux/types.h>
41#include <linux/sched.h>
42#include <linux/pci.h>
43#include <linux/ide.h>
44#include <linux/ioport.h>
45#include <linux/param.h> /* for HZ */
46#include <linux/delay.h>
47
48#include <asm/addrspace.h>
49#include <asm/time.h>
50#include <asm/bcache.h>
51#include <asm/irq.h>
52#include <asm/reboot.h>
53#include <asm/gdb-stub.h>
54#include <asm/jmr3927/jmr3927.h>
55#include <asm/mipsregs.h>
56#include <asm/traps.h>
57
58/* Tick Timer divider */
59#define JMR3927_TIMER_CCD 0 /* 1/2 */
60#define JMR3927_TIMER_CLK (JMR3927_IMCLK / (2 << JMR3927_TIMER_CCD))
61
62unsigned char led_state = 0xf;
63
64struct {
65 struct resource ram0;
66 struct resource ram1;
67 struct resource pcimem;
68 struct resource iob;
69 struct resource ioc;
70 struct resource pciio;
71 struct resource jmy1394;
72 struct resource rom1;
73 struct resource rom0;
74 struct resource sio0;
75 struct resource sio1;
76} jmr3927_resources = {
77 { "RAM0", 0, 0x01FFFFFF, IORESOURCE_MEM },
78 { "RAM1", 0x02000000, 0x03FFFFFF, IORESOURCE_MEM },
79 { "PCIMEM", 0x08000000, 0x07FFFFFF, IORESOURCE_MEM },
80 { "IOB", 0x10000000, 0x13FFFFFF },
81 { "IOC", 0x14000000, 0x14FFFFFF },
82 { "PCIIO", 0x15000000, 0x15FFFFFF },
83 { "JMY1394", 0x1D000000, 0x1D3FFFFF },
84 { "ROM1", 0x1E000000, 0x1E3FFFFF },
85 { "ROM0", 0x1FC00000, 0x1FFFFFFF },
86 { "SIO0", 0xFFFEF300, 0xFFFEF3FF },
87 { "SIO1", 0xFFFEF400, 0xFFFEF4FF },
88};
89
90/* don't enable - see errata */
91int jmr3927_ccfg_toeon = 0;
92
93static inline void do_reset(void)
94{
95#ifdef CONFIG_TC35815
96 extern void tc35815_killall(void);
97 tc35815_killall();
98#endif
99#if 1 /* Resetting PCI bus */
100 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
101 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR);
102 (void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */
103 mdelay(1);
104 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
105#endif
106 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR);
107}
108
109static void jmr3927_machine_restart(char *command)
110{
111 local_irq_disable();
112 puts("Rebooting...");
113 do_reset();
114}
115
116static void jmr3927_machine_halt(void)
117{
118 puts("JMR-TX3927 halted.\n");
119 while (1);
120}
121
122static void jmr3927_machine_power_off(void)
123{
124 puts("JMR-TX3927 halted. Please turn off the power.\n");
125 while (1);
126}
127
128#define USE_RTC_DS1742
129#ifdef USE_RTC_DS1742
130extern void rtc_ds1742_init(unsigned long base);
131#endif
132static void __init jmr3927_time_init(void)
133{
134#ifdef USE_RTC_DS1742
135 if (jmr3927_have_nvram()) {
136 rtc_ds1742_init(JMR3927_IOC_NVRAMB_ADDR);
137 }
138#endif
139}
140
141unsigned long jmr3927_do_gettimeoffset(void);
142extern int setup_irq(unsigned int irq, struct irqaction *irqaction);
143
144static void __init jmr3927_timer_setup(struct irqaction *irq)
145{
146 do_gettimeoffset = jmr3927_do_gettimeoffset;
147
148 jmr3927_tmrptr->cpra = JMR3927_TIMER_CLK / HZ;
149 jmr3927_tmrptr->itmr = TXx927_TMTITMR_TIIE | TXx927_TMTITMR_TZCE;
150 jmr3927_tmrptr->ccdr = JMR3927_TIMER_CCD;
151 jmr3927_tmrptr->tcr =
152 TXx927_TMTCR_TCE | TXx927_TMTCR_CCDE | TXx927_TMTCR_TMODE_ITVL;
153
154 setup_irq(JMR3927_IRQ_TICK, irq);
155}
156
157#define USECS_PER_JIFFY (1000000/HZ)
158
159unsigned long jmr3927_do_gettimeoffset(void)
160{
161 unsigned long count;
162 unsigned long res = 0;
163
164 /* MUST read TRR before TISR. */
165 count = jmr3927_tmrptr->trr;
166
167 if (jmr3927_tmrptr->tisr & TXx927_TMTISR_TIIS) {
168 /* timer interrupt is pending. use Max value. */
169 res = USECS_PER_JIFFY - 1;
170 } else {
171 /* convert to usec */
172 /* res = count / (JMR3927_TIMER_CLK / 1000000); */
173 res = (count << 7) / ((JMR3927_TIMER_CLK << 7) / 1000000);
174
175 /*
176 * Due to possible jiffies inconsistencies, we need to check
177 * the result so that we'll get a timer that is monotonic.
178 */
179 if (res >= USECS_PER_JIFFY)
180 res = USECS_PER_JIFFY-1;
181 }
182
183 return res;
184}
185
186
187//#undef DO_WRITE_THROUGH
188#define DO_WRITE_THROUGH
189#define DO_ENABLE_CACHE
190
191extern char * __init prom_getcmdline(void);
192static void jmr3927_board_init(void);
193extern struct resource pci_io_resource;
194extern struct resource pci_mem_resource;
195
196static void __init jmr3927_setup(void)
197{
198 char *argptr;
199
200 set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO);
201
202 board_time_init = jmr3927_time_init;
203 board_timer_setup = jmr3927_timer_setup;
204
205 _machine_restart = jmr3927_machine_restart;
206 _machine_halt = jmr3927_machine_halt;
207 _machine_power_off = jmr3927_machine_power_off;
208
209 /*
210 * IO/MEM resources.
211 */
212 ioport_resource.start = pci_io_resource.start;
213 ioport_resource.end = pci_io_resource.end;
214 iomem_resource.start = pci_mem_resource.start;
215 iomem_resource.end = pci_mem_resource.end;
216
217 /* Reboot on panic */
218 panic_timeout = 180;
219
220 {
221 unsigned int conf;
222 conf = read_c0_conf();
223 }
224
225#if 1
226 /* cache setup */
227 {
228 unsigned int conf;
229#ifdef DO_ENABLE_CACHE
230 int mips_ic_disable = 0, mips_dc_disable = 0;
231#else
232 int mips_ic_disable = 1, mips_dc_disable = 1;
233#endif
234#ifdef DO_WRITE_THROUGH
235 int mips_config_cwfon = 0;
236 int mips_config_wbon = 0;
237#else
238 int mips_config_cwfon = 1;
239 int mips_config_wbon = 1;
240#endif
241
242 conf = read_c0_conf();
243 conf &= ~(TX39_CONF_ICE | TX39_CONF_DCE | TX39_CONF_WBON | TX39_CONF_CWFON);
244 conf |= mips_ic_disable ? 0 : TX39_CONF_ICE;
245 conf |= mips_dc_disable ? 0 : TX39_CONF_DCE;
246 conf |= mips_config_wbon ? TX39_CONF_WBON : 0;
247 conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0;
248
249 write_c0_conf(conf);
250 write_c0_cache(0);
251 }
252#endif
253
254 /* initialize board */
255 jmr3927_board_init();
256
257 argptr = prom_getcmdline();
258
259 if ((argptr = strstr(argptr, "toeon")) != NULL) {
260 jmr3927_ccfg_toeon = 1;
261 }
262 argptr = prom_getcmdline();
263 if ((argptr = strstr(argptr, "ip=")) == NULL) {
264 argptr = prom_getcmdline();
265 strcat(argptr, " ip=bootp");
266 }
267
268#ifdef CONFIG_TXX927_SERIAL_CONSOLE
269 argptr = prom_getcmdline();
270 if ((argptr = strstr(argptr, "console=")) == NULL) {
271 argptr = prom_getcmdline();
272 strcat(argptr, " console=ttyS1,115200");
273 }
274#endif
275}
276
277early_initcall(jmr3927_setup);
278
279
280static void tx3927_setup(void);
281
282#ifdef CONFIG_PCI
283unsigned long mips_pci_io_base;
284unsigned long mips_pci_io_size;
285unsigned long mips_pci_mem_base;
286unsigned long mips_pci_mem_size;
287/* for legacy I/O, PCI I/O PCI Bus address must be 0 */
288unsigned long mips_pci_io_pciaddr = 0;
289#endif
290
291static void __init jmr3927_board_init(void)
292{
293 char *argptr;
294
295#ifdef CONFIG_PCI
296 mips_pci_io_base = JMR3927_PCIIO;
297 mips_pci_io_size = JMR3927_PCIIO_SIZE;
298 mips_pci_mem_base = JMR3927_PCIMEM;
299 mips_pci_mem_size = JMR3927_PCIMEM_SIZE;
300#endif
301
302 tx3927_setup();
303
304 if (jmr3927_have_isac()) {
305
306#ifdef CONFIG_FB_E1355
307 argptr = prom_getcmdline();
308 if ((argptr = strstr(argptr, "video=")) == NULL) {
309 argptr = prom_getcmdline();
310 strcat(argptr, " video=e1355fb:crt16h");
311 }
312#endif
313
314#ifdef CONFIG_BLK_DEV_IDE
315 /* overrides PCI-IDE */
316#endif
317 }
318
319 /* SIO0 DTR on */
320 jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
321
322 jmr3927_led_set(0);
323
324
325 if (jmr3927_have_isac())
326 jmr3927_io_led_set(0);
327 printk("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
328 jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
329 jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
330 jmr3927_dipsw1(), jmr3927_dipsw2(),
331 jmr3927_dipsw3(), jmr3927_dipsw4());
332 if (jmr3927_have_isac())
333 printk("JMI-3927IO2 --- ISAC(Rev %d) DIPSW:%01x\n",
334 jmr3927_isac_reg_in(JMR3927_ISAC_REV_ADDR) & JMR3927_REV_MASK,
335 jmr3927_io_dipsw());
336}
337
338static void __init tx3927_setup(void)
339{
340 int i;
341
342 /* SDRAMC are configured by PROM */
343
344 /* ROMC */
345 tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048;
346 tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8;
347 tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
348 tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;
349
350 /* CCFG */
351 /* enable Timeout BusError */
352 if (jmr3927_ccfg_toeon)
353 tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;
354
355 /* clear BusErrorOnWrite flag */
356 tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
357 /* Disable PCI snoop */
358 tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
359
360#ifdef DO_WRITE_THROUGH
361 /* Enable PCI SNOOP - with write through only */
362 tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
363#endif
364
365 /* Pin selection */
366 tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
367 tx3927_ccfgptr->pcfg |=
368 TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
369 (TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));
370
371 printk("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
372 tx3927_ccfgptr->crir,
373 tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
374
375 /* IRC */
376 /* disable interrupt control */
377 tx3927_ircptr->cer = 0;
378 /* mask all IRC interrupts */
379 tx3927_ircptr->imr = 0;
380 for (i = 0; i < TX3927_NUM_IR / 2; i++) {
381 tx3927_ircptr->ilr[i] = 0;
382 }
383 /* setup IRC interrupt mode (Low Active) */
384 for (i = 0; i < TX3927_NUM_IR / 8; i++) {
385 tx3927_ircptr->cr[i] = 0;
386 }
387
388 /* TMR */
389 /* disable all timers */
390 for (i = 0; i < TX3927_NR_TMR; i++) {
391 tx3927_tmrptr(i)->tcr = TXx927_TMTCR_CRE;
392 tx3927_tmrptr(i)->tisr = 0;
393 tx3927_tmrptr(i)->cpra = 0xffffffff;
394 tx3927_tmrptr(i)->itmr = 0;
395 tx3927_tmrptr(i)->ccdr = 0;
396 tx3927_tmrptr(i)->pgmr = 0;
397 }
398
399 /* DMA */
400 tx3927_dmaptr->mcr = 0;
401 for (i = 0; i < sizeof(tx3927_dmaptr->ch) / sizeof(tx3927_dmaptr->ch[0]); i++) {
402 /* reset channel */
403 tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
404 tx3927_dmaptr->ch[i].ccr = 0;
405 }
406 /* enable DMA */
407#ifdef __BIG_ENDIAN
408 tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
409#else
410 tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
411#endif
412
413#ifdef CONFIG_PCI
414 /* PCIC */
415 printk("TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:",
416 tx3927_pcicptr->did, tx3927_pcicptr->vid,
417 tx3927_pcicptr->rid);
418 if (!(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB)) {
419 printk("External\n");
420 /* XXX */
421 } else {
422 printk("Internal\n");
423
424 /* Reset PCI Bus */
425 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
426 udelay(100);
427 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
428 JMR3927_IOC_RESET_ADDR);
429 udelay(100);
430 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
431
432
433 /* Disable External PCI Config. Access */
434 tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD;
435#ifdef __BIG_ENDIAN
436 tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE |
437 TX3927_PCIC_LBC_TIBSE |
438 TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE;
439#endif
440 /* LB->PCI mappings */
441 tx3927_pcicptr->iomas = ~(mips_pci_io_size - 1);
442 tx3927_pcicptr->ilbioma = mips_pci_io_base;
443 tx3927_pcicptr->ipbioma = mips_pci_io_pciaddr;
444 tx3927_pcicptr->mmas = ~(mips_pci_mem_size - 1);
445 tx3927_pcicptr->ilbmma = mips_pci_mem_base;
446 tx3927_pcicptr->ipbmma = mips_pci_mem_base;
447 /* PCI->LB mappings */
448 tx3927_pcicptr->iobas = 0xffffffff;
449 tx3927_pcicptr->ioba = 0;
450 tx3927_pcicptr->tlbioma = 0;
451 tx3927_pcicptr->mbas = ~(mips_pci_mem_size - 1);
452 tx3927_pcicptr->mba = 0;
453 tx3927_pcicptr->tlbmma = 0;
454#ifndef JMR3927_INIT_INDIRECT_PCI
455 /* Enable Direct mapping Address Space Decoder */
456 tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE;
457#endif
458
459 /* Clear All Local Bus Status */
460 tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
461 /* Enable All Local Bus Interrupts */
462 tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL;
463 /* Clear All PCI Status Error */
464 tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL;
465 /* Enable All PCI Status Error Interrupts */
466 tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL;
467
468 /* PCIC Int => IRC IRQ10 */
469 tx3927_pcicptr->il = TX3927_IR_PCI;
470#if 1
471 /* Target Control (per errata) */
472 tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E;
473#endif
474
475 /* Enable Bus Arbiter */
476#if 0
477 tx3927_pcicptr->req_trace = 0x73737373;
478#endif
479 tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN;
480
481 tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER |
482 PCI_COMMAND_MEMORY |
483#if 1
484 PCI_COMMAND_IO |
485#endif
486 PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
487 }
488#endif /* CONFIG_PCI */
489
490 /* PIO */
491 /* PIO[15:12] connected to LEDs */
492 tx3927_pioptr->dir = 0x0000f000;
493 tx3927_pioptr->maskcpu = 0;
494 tx3927_pioptr->maskext = 0;
495 {
496 unsigned int conf;
497
498 conf = read_c0_conf();
499 if (!(conf & TX39_CONF_ICE))
500 printk("TX3927 I-Cache disabled.\n");
501 if (!(conf & TX39_CONF_DCE))
502 printk("TX3927 D-Cache disabled.\n");
503 else if (!(conf & TX39_CONF_WBON))
504 printk("TX3927 D-Cache WriteThrough.\n");
505 else if (!(conf & TX39_CONF_CWFON))
506 printk("TX3927 D-Cache WriteBack.\n");
507 else
508 printk("TX3927 D-Cache WriteBack (CWF) .\n");
509 }
510}