1 /***********************************************************************
3 * Copyright 2001 MontaVista Software Inc.
4 * Author: MontaVista Software, Inc.
7 * Based on arch/mips/ddb5xxx/ddb5477/setup.c
9 * Setup file for JMR3927.
11 * Copyright (C) 2000-2001 Toshiba Corporation
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.
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.
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.
33 ***********************************************************************
36 #include <linux/init.h>
37 #include <linux/kernel.h>
38 #include <linux/kdev_t.h>
39 #include <linux/types.h>
40 #include <linux/sched.h>
41 #include <linux/pci.h>
42 #include <linux/ide.h>
43 #include <linux/irq.h>
44 #include <linux/ioport.h>
45 #include <linux/param.h> /* for HZ */
46 #include <linux/delay.h>
48 #include <linux/platform_device.h>
49 #ifdef CONFIG_SERIAL_TXX9
50 #include <linux/tty.h>
51 #include <linux/serial.h>
52 #include <linux/serial_core.h>
55 #include <asm/addrspace.h>
57 #include <asm/bcache.h>
59 #include <asm/reboot.h>
60 #include <asm/gdb-stub.h>
61 #include <asm/jmr3927/jmr3927.h>
62 #include <asm/mipsregs.h>
63 #include <asm/traps.h>
65 extern void puts(unsigned char *cp);
67 /* Tick Timer divider */
68 #define JMR3927_TIMER_CCD 0 /* 1/2 */
69 #define JMR3927_TIMER_CLK (JMR3927_IMCLK / (2 << JMR3927_TIMER_CCD))
71 unsigned char led_state = 0xf;
76 struct resource pcimem;
79 struct resource pciio;
80 struct resource jmy1394;
85 } jmr3927_resources = {
90 .flags = IORESOURCE_MEM
95 .flags = IORESOURCE_MEM
100 .flags = IORESOURCE_MEM
136 /* don't enable - see errata */
137 int jmr3927_ccfg_toeon = 0;
139 static inline void do_reset(void)
141 #if 1 /* Resetting PCI bus */
142 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
143 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR);
144 (void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */
146 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
148 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR);
151 static void jmr3927_machine_restart(char *command)
154 puts("Rebooting...");
158 static void jmr3927_machine_halt(void)
160 puts("JMR-TX3927 halted.\n");
164 static void jmr3927_machine_power_off(void)
166 puts("JMR-TX3927 halted. Please turn off the power.\n");
170 static cycle_t jmr3927_hpt_read(void)
172 /* We assume this function is called xtime_lock held. */
173 return jiffies * (JMR3927_TIMER_CLK / HZ) + jmr3927_tmrptr->trr;
176 static void __init jmr3927_time_init(void)
178 clocksource_mips.read = jmr3927_hpt_read;
179 mips_hpt_frequency = JMR3927_TIMER_CLK;
182 void __init plat_timer_setup(struct irqaction *irq)
184 jmr3927_tmrptr->cpra = JMR3927_TIMER_CLK / HZ;
185 jmr3927_tmrptr->itmr = TXx927_TMTITMR_TIIE | TXx927_TMTITMR_TZCE;
186 jmr3927_tmrptr->ccdr = JMR3927_TIMER_CCD;
187 jmr3927_tmrptr->tcr =
188 TXx927_TMTCR_TCE | TXx927_TMTCR_CCDE | TXx927_TMTCR_TMODE_ITVL;
190 setup_irq(JMR3927_IRQ_TICK, irq);
193 #define USECS_PER_JIFFY (1000000/HZ)
195 //#undef DO_WRITE_THROUGH
196 #define DO_WRITE_THROUGH
197 #define DO_ENABLE_CACHE
199 extern char * __init prom_getcmdline(void);
200 static void jmr3927_board_init(void);
201 extern struct resource pci_io_resource;
202 extern struct resource pci_mem_resource;
204 void __init plat_mem_setup(void)
208 set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO);
210 board_time_init = jmr3927_time_init;
212 _machine_restart = jmr3927_machine_restart;
213 _machine_halt = jmr3927_machine_halt;
214 pm_power_off = jmr3927_machine_power_off;
219 ioport_resource.start = pci_io_resource.start;
220 ioport_resource.end = pci_io_resource.end;
221 iomem_resource.start = 0;
222 iomem_resource.end = 0xffffffff;
224 /* Reboot on panic */
229 conf = read_c0_conf();
236 #ifdef DO_ENABLE_CACHE
237 int mips_ic_disable = 0, mips_dc_disable = 0;
239 int mips_ic_disable = 1, mips_dc_disable = 1;
241 #ifdef DO_WRITE_THROUGH
242 int mips_config_cwfon = 0;
243 int mips_config_wbon = 0;
245 int mips_config_cwfon = 1;
246 int mips_config_wbon = 1;
249 conf = read_c0_conf();
250 conf &= ~(TX39_CONF_ICE | TX39_CONF_DCE | TX39_CONF_WBON | TX39_CONF_CWFON);
251 conf |= mips_ic_disable ? 0 : TX39_CONF_ICE;
252 conf |= mips_dc_disable ? 0 : TX39_CONF_DCE;
253 conf |= mips_config_wbon ? TX39_CONF_WBON : 0;
254 conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0;
261 /* initialize board */
262 jmr3927_board_init();
264 argptr = prom_getcmdline();
266 if ((argptr = strstr(argptr, "toeon")) != NULL) {
267 jmr3927_ccfg_toeon = 1;
269 argptr = prom_getcmdline();
270 if ((argptr = strstr(argptr, "ip=")) == NULL) {
271 argptr = prom_getcmdline();
272 strcat(argptr, " ip=bootp");
275 #ifdef CONFIG_SERIAL_TXX9
277 extern int early_serial_txx9_setup(struct uart_port *port);
279 struct uart_port req;
280 for(i = 0; i < 2; i++) {
281 memset(&req, 0, sizeof(req));
283 req.iotype = UPIO_MEM;
284 req.membase = (char *)TX3927_SIO_REG(i);
285 req.mapbase = TX3927_SIO_REG(i);
287 JMR3927_IRQ_IRC_SIO0 : JMR3927_IRQ_IRC_SIO1;
289 req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
290 req.uartclk = JMR3927_IMCLK;
291 early_serial_txx9_setup(&req);
294 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
295 argptr = prom_getcmdline();
296 if ((argptr = strstr(argptr, "console=")) == NULL) {
297 argptr = prom_getcmdline();
298 strcat(argptr, " console=ttyS1,115200");
304 static void tx3927_setup(void);
307 unsigned long mips_pci_io_base;
308 unsigned long mips_pci_io_size;
309 unsigned long mips_pci_mem_base;
310 unsigned long mips_pci_mem_size;
311 /* for legacy I/O, PCI I/O PCI Bus address must be 0 */
312 unsigned long mips_pci_io_pciaddr = 0;
315 static void __init jmr3927_board_init(void)
320 mips_pci_io_base = JMR3927_PCIIO;
321 mips_pci_io_size = JMR3927_PCIIO_SIZE;
322 mips_pci_mem_base = JMR3927_PCIMEM;
323 mips_pci_mem_size = JMR3927_PCIMEM_SIZE;
328 if (jmr3927_have_isac()) {
330 #ifdef CONFIG_FB_E1355
331 argptr = prom_getcmdline();
332 if ((argptr = strstr(argptr, "video=")) == NULL) {
333 argptr = prom_getcmdline();
334 strcat(argptr, " video=e1355fb:crt16h");
338 #ifdef CONFIG_BLK_DEV_IDE
339 /* overrides PCI-IDE */
344 jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
349 if (jmr3927_have_isac())
350 jmr3927_io_led_set(0);
351 printk("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
352 jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
353 jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
354 jmr3927_dipsw1(), jmr3927_dipsw2(),
355 jmr3927_dipsw3(), jmr3927_dipsw4());
356 if (jmr3927_have_isac())
357 printk("JMI-3927IO2 --- ISAC(Rev %d) DIPSW:%01x\n",
358 jmr3927_isac_reg_in(JMR3927_ISAC_REV_ADDR) & JMR3927_REV_MASK,
362 void __init tx3927_setup(void)
366 /* SDRAMC are configured by PROM */
369 tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048;
370 tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8;
371 tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
372 tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;
375 /* enable Timeout BusError */
376 if (jmr3927_ccfg_toeon)
377 tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;
379 /* clear BusErrorOnWrite flag */
380 tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
381 /* Disable PCI snoop */
382 tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
384 #ifdef DO_WRITE_THROUGH
385 /* Enable PCI SNOOP - with write through only */
386 tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
390 tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
391 tx3927_ccfgptr->pcfg |=
392 TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
393 (TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));
395 printk("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
396 tx3927_ccfgptr->crir,
397 tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
400 /* disable interrupt control */
401 tx3927_ircptr->cer = 0;
402 /* mask all IRC interrupts */
403 tx3927_ircptr->imr = 0;
404 for (i = 0; i < TX3927_NUM_IR / 2; i++) {
405 tx3927_ircptr->ilr[i] = 0;
407 /* setup IRC interrupt mode (Low Active) */
408 for (i = 0; i < TX3927_NUM_IR / 8; i++) {
409 tx3927_ircptr->cr[i] = 0;
413 /* disable all timers */
414 for (i = 0; i < TX3927_NR_TMR; i++) {
415 tx3927_tmrptr(i)->tcr = TXx927_TMTCR_CRE;
416 tx3927_tmrptr(i)->tisr = 0;
417 tx3927_tmrptr(i)->cpra = 0xffffffff;
418 tx3927_tmrptr(i)->itmr = 0;
419 tx3927_tmrptr(i)->ccdr = 0;
420 tx3927_tmrptr(i)->pgmr = 0;
424 tx3927_dmaptr->mcr = 0;
425 for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) {
427 tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
428 tx3927_dmaptr->ch[i].ccr = 0;
432 tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
434 tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
439 printk("TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:",
440 tx3927_pcicptr->did, tx3927_pcicptr->vid,
441 tx3927_pcicptr->rid);
442 if (!(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB)) {
443 printk("External\n");
446 printk("Internal\n");
449 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
451 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
452 JMR3927_IOC_RESET_ADDR);
454 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
457 /* Disable External PCI Config. Access */
458 tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD;
460 tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE |
461 TX3927_PCIC_LBC_TIBSE |
462 TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE;
464 /* LB->PCI mappings */
465 tx3927_pcicptr->iomas = ~(mips_pci_io_size - 1);
466 tx3927_pcicptr->ilbioma = mips_pci_io_base;
467 tx3927_pcicptr->ipbioma = mips_pci_io_pciaddr;
468 tx3927_pcicptr->mmas = ~(mips_pci_mem_size - 1);
469 tx3927_pcicptr->ilbmma = mips_pci_mem_base;
470 tx3927_pcicptr->ipbmma = mips_pci_mem_base;
471 /* PCI->LB mappings */
472 tx3927_pcicptr->iobas = 0xffffffff;
473 tx3927_pcicptr->ioba = 0;
474 tx3927_pcicptr->tlbioma = 0;
475 tx3927_pcicptr->mbas = ~(mips_pci_mem_size - 1);
476 tx3927_pcicptr->mba = 0;
477 tx3927_pcicptr->tlbmma = 0;
478 #ifndef JMR3927_INIT_INDIRECT_PCI
479 /* Enable Direct mapping Address Space Decoder */
480 tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE;
483 /* Clear All Local Bus Status */
484 tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
485 /* Enable All Local Bus Interrupts */
486 tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL;
487 /* Clear All PCI Status Error */
488 tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL;
489 /* Enable All PCI Status Error Interrupts */
490 tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL;
492 /* PCIC Int => IRC IRQ10 */
493 tx3927_pcicptr->il = TX3927_IR_PCI;
495 /* Target Control (per errata) */
496 tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E;
499 /* Enable Bus Arbiter */
501 tx3927_pcicptr->req_trace = 0x73737373;
503 tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN;
505 tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER |
510 PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
512 #endif /* CONFIG_PCI */
515 /* PIO[15:12] connected to LEDs */
516 tx3927_pioptr->dir = 0x0000f000;
517 tx3927_pioptr->maskcpu = 0;
518 tx3927_pioptr->maskext = 0;
522 conf = read_c0_conf();
523 if (!(conf & TX39_CONF_ICE))
524 printk("TX3927 I-Cache disabled.\n");
525 if (!(conf & TX39_CONF_DCE))
526 printk("TX3927 D-Cache disabled.\n");
527 else if (!(conf & TX39_CONF_WBON))
528 printk("TX3927 D-Cache WriteThrough.\n");
529 else if (!(conf & TX39_CONF_CWFON))
530 printk("TX3927 D-Cache WriteBack.\n");
532 printk("TX3927 D-Cache WriteBack (CWF) .\n");
536 /* This trick makes rtc-ds1742 driver usable as is. */
537 unsigned long __swizzle_addr_b(unsigned long port)
539 if ((port & 0xffff0000) != JMR3927_IOC_NVRAMB_ADDR)
541 port = (port & 0xffff0000) | (port & 0x7fff << 1);
548 EXPORT_SYMBOL(__swizzle_addr_b);
550 static int __init jmr3927_rtc_init(void)
552 struct resource res = {
553 .start = JMR3927_IOC_NVRAMB_ADDR - IO_BASE,
554 .end = JMR3927_IOC_NVRAMB_ADDR - IO_BASE + 0x800 - 1,
555 .flags = IORESOURCE_MEM,
557 struct platform_device *dev;
558 if (!jmr3927_have_nvram())
560 dev = platform_device_register_simple("ds1742", -1, &res, 1);
561 return IS_ERR(dev) ? PTR_ERR(dev) : 0;
563 device_initcall(jmr3927_rtc_init);