void __init tx3927_setup(void)
{
	int i;
	unsigned int conf;

	txx9_reg_res_init(TX3927_REV_PCODE(), TX3927_REG_BASE,
			  TX3927_REG_SIZE);

	/* SDRAMC,ROMC are configured by PROM */
	for (i = 0; i < 8; i++) {
		if (!(tx3927_romcptr->cr[i] & 0x8))
			continue;	/* disabled */
		txx9_ce_res[i].start = (unsigned long)TX3927_ROMC_BA(i);
		txx9_ce_res[i].end =
			txx9_ce_res[i].start + TX3927_ROMC_SIZE(i) - 1;
		request_resource(&iomem_resource, &txx9_ce_res[i]);
	}

	/* clocks */
	txx9_gbus_clock = txx9_cpu_clock / 2;
	/* change default value to udelay/mdelay take reasonable time */
	loops_per_jiffy = txx9_cpu_clock / HZ / 2;

	/* CCFG */
	/* enable Timeout BusError */
	if (txx9_ccfg_toeon)
		tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;

	/* clear BusErrorOnWrite flag */
	tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
	if (read_c0_conf() & TX39_CONF_WBON)
		/* Disable PCI snoop */
		tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
	else
		/* Enable PCI SNOOP - with write through only */
		tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
	/* do reset on watchdog */
	tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR;

	printk(KERN_INFO "TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
	       tx3927_ccfgptr->crir,
	       tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);

	/* TMR */
	for (i = 0; i < TX3927_NR_TMR; i++)
		txx9_tmr_init(TX3927_TMR_REG(i));

	/* DMA */
	tx3927_dmaptr->mcr = 0;
	for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) {
		/* reset channel */
		tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
		tx3927_dmaptr->ch[i].ccr = 0;
	}
	/* enable DMA */
#ifdef __BIG_ENDIAN
	tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
#else
	tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
#endif

	/* PIO */
	__raw_writel(0, &tx3927_pioptr->maskcpu);
	__raw_writel(0, &tx3927_pioptr->maskext);
	txx9_gpio_init(TX3927_PIO_REG, 0, 16);

	conf = read_c0_conf();
	if (conf & TX39_CONF_DCE) {
		if (!(conf & TX39_CONF_WBON))
			pr_info("TX3927 D-Cache WriteThrough.\n");
		else if (!(conf & TX39_CONF_CWFON))
			pr_info("TX3927 D-Cache WriteBack.\n");
		else
			pr_info("TX3927 D-Cache WriteBack (CWF) .\n");
	}
}
Beispiel #2
0
static void __init tx3927_setup(void)
{
	int i;
#ifdef CONFIG_PCI
	unsigned long mips_pci_io_base = JMR3927_PCIIO;
	unsigned long mips_pci_io_size = JMR3927_PCIIO_SIZE;
	unsigned long mips_pci_mem_base = JMR3927_PCIMEM;
	unsigned long mips_pci_mem_size = JMR3927_PCIMEM_SIZE;
	/* for legacy I/O, PCI I/O PCI Bus address must be 0 */
	unsigned long mips_pci_io_pciaddr = 0;
#endif

	/* SDRAMC are configured by PROM */

	/* ROMC */
	tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048;
	tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8;
	tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
	tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;

	/* CCFG */
	/* enable Timeout BusError */
	if (jmr3927_ccfg_toeon)
		tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;

	/* clear BusErrorOnWrite flag */
	tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
	/* Disable PCI snoop */
	tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
	/* do reset on watchdog */
	tx3927_ccfgptr->ccfg |= TX3927_CCFG_WR;

#ifdef DO_WRITE_THROUGH
	/* Enable PCI SNOOP - with write through only */
	tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
#endif

	/* Pin selection */
	tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
	tx3927_ccfgptr->pcfg |=
		TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
		(TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));

	printk("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
	       tx3927_ccfgptr->crir,
	       tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);

	/* TMR */
	for (i = 0; i < TX3927_NR_TMR; i++)
		txx9_tmr_init(TX3927_TMR_REG(i));

	/* DMA */
	tx3927_dmaptr->mcr = 0;
	for (i = 0; i < ARRAY_SIZE(tx3927_dmaptr->ch); i++) {
		/* reset channel */
		tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
		tx3927_dmaptr->ch[i].ccr = 0;
	}
	/* enable DMA */
#ifdef __BIG_ENDIAN
	tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
#else
	tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
#endif

#ifdef CONFIG_PCI
	/* PCIC */
	printk("TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:",
	       tx3927_pcicptr->did, tx3927_pcicptr->vid,
	       tx3927_pcicptr->rid);
	if (!(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB)) {
		printk("External\n");
		/* XXX */
	} else {
		printk("Internal\n");

		/* Reset PCI Bus */
		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
		udelay(100);
		jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
				    JMR3927_IOC_RESET_ADDR);
		udelay(100);
		jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);


		/* Disable External PCI Config. Access */
		tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD;
#ifdef __BIG_ENDIAN
		tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE |
			TX3927_PCIC_LBC_TIBSE |
			TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE;
#endif
		/* LB->PCI mappings */
		tx3927_pcicptr->iomas = ~(mips_pci_io_size - 1);
		tx3927_pcicptr->ilbioma = mips_pci_io_base;
		tx3927_pcicptr->ipbioma = mips_pci_io_pciaddr;
		tx3927_pcicptr->mmas = ~(mips_pci_mem_size - 1);
		tx3927_pcicptr->ilbmma = mips_pci_mem_base;
		tx3927_pcicptr->ipbmma = mips_pci_mem_base;
		/* PCI->LB mappings */
		tx3927_pcicptr->iobas = 0xffffffff;
		tx3927_pcicptr->ioba = 0;
		tx3927_pcicptr->tlbioma = 0;
		tx3927_pcicptr->mbas = ~(mips_pci_mem_size - 1);
		tx3927_pcicptr->mba = 0;
		tx3927_pcicptr->tlbmma = 0;
		/* Enable Direct mapping Address Space Decoder */
		tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE;

		/* Clear All Local Bus Status */
		tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
		/* Enable All Local Bus Interrupts */
		tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL;
		/* Clear All PCI Status Error */
		tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL;
		/* Enable All PCI Status Error Interrupts */
		tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL;

		/* PCIC Int => IRC IRQ10 */
		tx3927_pcicptr->il = TX3927_IR_PCI;
		/* Target Control (per errata) */
		tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E;

		/* Enable Bus Arbiter */
		tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN;

		tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER |
			PCI_COMMAND_MEMORY |
			PCI_COMMAND_IO |
			PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
	}
#endif /* CONFIG_PCI */

	/* PIO */
	/* PIO[15:12] connected to LEDs */
	__raw_writel(0x0000f000, &tx3927_pioptr->dir);
	__raw_writel(0, &tx3927_pioptr->maskcpu);
	__raw_writel(0, &tx3927_pioptr->maskext);
	txx9_gpio_init(TX3927_PIO_REG, 0, 16);
	gpio_request(11, "dipsw1");
	gpio_request(10, "dipsw2");
	{
		unsigned int conf;

	conf = read_c0_conf();
               if (!(conf & TX39_CONF_ICE))
                       printk("TX3927 I-Cache disabled.\n");
               if (!(conf & TX39_CONF_DCE))
                       printk("TX3927 D-Cache disabled.\n");
               else if (!(conf & TX39_CONF_WBON))
                       printk("TX3927 D-Cache WriteThrough.\n");
               else if (!(conf & TX39_CONF_CWFON))
                       printk("TX3927 D-Cache WriteBack.\n");
               else
                       printk("TX3927 D-Cache WriteBack (CWF) .\n");
	}
}