arch/mips/txx9/generic/setup_tx4927.c - kernel/common - Git at Google

 /*
  * TX4927 setup routines
  * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
  *	    and RBTX49xx patch from CELF patch archive.
  *
  * 2003-2005 (c) MontaVista Software, Inc.
  * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  */
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
 #include <linux/param.h>
 #include <linux/ptrace.h>
 #include <linux/mtd/physmap.h>
 #include <asm/reboot.h>
 #include <asm/traps.h>
 #include <asm/txx9irq.h>
 #include <asm/txx9tmr.h>
 #include <asm/txx9pio.h>
 #include <asm/txx9/generic.h>
 #include <asm/txx9/dmac.h>
 #include <asm/txx9/tx4927.h>

 static void __init tx4927_wdr_init(void)
 {
 	/* report watchdog reset status */
 	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST)
 		pr_warning("Watchdog reset detected at 0x%lx\n",
 			   read_c0_errorepc());
 	/* clear WatchDogReset (W1C) */
 	tx4927_ccfg_set(TX4927_CCFG_WDRST);
 	/* do reset on watchdog */
 	tx4927_ccfg_set(TX4927_CCFG_WR);
 }

 void __init tx4927_wdt_init(void)
 {
 	txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL);
 }

 static void tx4927_machine_restart(char *command)
 {
 	local_irq_disable();
 	pr_emerg("Rebooting (with %s watchdog reset)...\n",
 		 (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) ?
 		 "external" : "internal");
 	/* clear watchdog status */
 	tx4927_ccfg_set(TX4927_CCFG_WDRST);	/* W1C */
 	txx9_wdt_now(TX4927_TMR_REG(2) & 0xfffffffffULL);
 	while (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST))
 		;
 	mdelay(10);
 	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) {
 		pr_emerg("Rebooting (with internal watchdog reset)...\n");
 		/* External WDRST failed.  Do internal watchdog reset */
 		tx4927_ccfg_clear(TX4927_CCFG_WDREXEN);
 	}
 	/* fallback */
 	(*_machine_halt)();
 }

 void show_registers(struct pt_regs *regs);
 static int tx4927_be_handler(struct pt_regs *regs, int is_fixup)
 {
 	int data = regs->cp0_cause & 4;
 	console_verbose();
 	pr_err("%cBE exception at %#lx\n", data ? 'D' : 'I', regs->cp0_epc);
 	pr_err("ccfg:%llx, toea:%llx\n",
 	       (unsigned long long)____raw_readq(&tx4927_ccfgptr->ccfg),
 	       (unsigned long long)____raw_readq(&tx4927_ccfgptr->toea));
 #ifdef CONFIG_PCI
 	tx4927_report_pcic_status();
 #endif
 	show_registers(regs);
 	panic("BusError!");
 }
 static void __init tx4927_be_init(void)
 {
 	board_be_handler = tx4927_be_handler;
 }

 static struct resource tx4927_sdram_resource[4];

 void __init tx4927_setup(void)
 {
 	int i;
 	__u32 divmode;
 	unsigned int cpuclk = 0;
 	u64 ccfg;

 	txx9_reg_res_init(TX4927_REV_PCODE(), TX4927_REG_BASE,
 			  TX4927_REG_SIZE);
 	set_c0_config(TX49_CONF_CWFON);

 	/* SDRAMC,EBUSC are configured by PROM */
 	for (i = 0; i < 8; i++) {
 		if (!(TX4927_EBUSC_CR(i) & 0x8))
 			continue;	/* disabled */
 		txx9_ce_res[i].start = (unsigned long)TX4927_EBUSC_BA(i);
 		txx9_ce_res[i].end =
 			txx9_ce_res[i].start + TX4927_EBUSC_SIZE(i) - 1;
 		request_resource(&iomem_resource, &txx9_ce_res[i]);
 	}

 	/* clocks */
 	ccfg = ____raw_readq(&tx4927_ccfgptr->ccfg);
 	if (txx9_master_clock) {
 		/* calculate gbus_clock and cpu_clock from master_clock */
 		divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
 		switch (divmode) {
 		case TX4927_CCFG_DIVMODE_8:
 		case TX4927_CCFG_DIVMODE_10:
 		case TX4927_CCFG_DIVMODE_12:
 		case TX4927_CCFG_DIVMODE_16:
 			txx9_gbus_clock = txx9_master_clock * 4; break;
 		default:
 			txx9_gbus_clock = txx9_master_clock;
 		}
 		switch (divmode) {
 		case TX4927_CCFG_DIVMODE_2:
 		case TX4927_CCFG_DIVMODE_8:
 			cpuclk = txx9_gbus_clock * 2; break;
 		case TX4927_CCFG_DIVMODE_2_5:
 		case TX4927_CCFG_DIVMODE_10:
 			cpuclk = txx9_gbus_clock * 5 / 2; break;
 		case TX4927_CCFG_DIVMODE_3:
 		case TX4927_CCFG_DIVMODE_12:
 			cpuclk = txx9_gbus_clock * 3; break;
 		case TX4927_CCFG_DIVMODE_4:
 		case TX4927_CCFG_DIVMODE_16:
 			cpuclk = txx9_gbus_clock * 4; break;
 		}
 		txx9_cpu_clock = cpuclk;
 	} else {
 		if (txx9_cpu_clock == 0)
 			txx9_cpu_clock = 200000000;	/* 200MHz */
 		/* calculate gbus_clock and master_clock from cpu_clock */
 		cpuclk = txx9_cpu_clock;
 		divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
 		switch (divmode) {
 		case TX4927_CCFG_DIVMODE_2:
 		case TX4927_CCFG_DIVMODE_8:
 			txx9_gbus_clock = cpuclk / 2; break;
 		case TX4927_CCFG_DIVMODE_2_5:
 		case TX4927_CCFG_DIVMODE_10:
 			txx9_gbus_clock = cpuclk * 2 / 5; break;
 		case TX4927_CCFG_DIVMODE_3:
 		case TX4927_CCFG_DIVMODE_12:
 			txx9_gbus_clock = cpuclk / 3; break;
 		case TX4927_CCFG_DIVMODE_4:
 		case TX4927_CCFG_DIVMODE_16:
 			txx9_gbus_clock = cpuclk / 4; break;
 		}
 		switch (divmode) {
 		case TX4927_CCFG_DIVMODE_8:
 		case TX4927_CCFG_DIVMODE_10:
 		case TX4927_CCFG_DIVMODE_12:
 		case TX4927_CCFG_DIVMODE_16:
 			txx9_master_clock = txx9_gbus_clock / 4; break;
 		default:
 			txx9_master_clock = txx9_gbus_clock;
 		}
 	}
 	/* change default value to udelay/mdelay take reasonable time */
 	loops_per_jiffy = txx9_cpu_clock / HZ / 2;

 	/* CCFG */
 	tx4927_wdr_init();
 	/* clear BusErrorOnWrite flag (W1C) */
 	tx4927_ccfg_set(TX4927_CCFG_BEOW);
 	/* enable Timeout BusError */
 	if (txx9_ccfg_toeon)
 		tx4927_ccfg_set(TX4927_CCFG_TOE);

 	/* DMA selection */
 	txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_DMASEL_ALL);

 	/* Use external clock for external arbiter */
 	if (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB))
 		txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_PCICLKEN_ALL);

 	printk(KERN_INFO "%s -- %dMHz(M%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
 	       txx9_pcode_str,
 	       (cpuclk + 500000) / 1000000,
 	       (txx9_master_clock + 500000) / 1000000,
 	       (__u32)____raw_readq(&tx4927_ccfgptr->crir),
 	       (unsigned long long)____raw_readq(&tx4927_ccfgptr->ccfg),
 	       (unsigned long long)____raw_readq(&tx4927_ccfgptr->pcfg));

 	printk(KERN_INFO "%s SDRAMC --", txx9_pcode_str);
 	for (i = 0; i < 4; i++) {
 		__u64 cr = TX4927_SDRAMC_CR(i);
 		unsigned long base, size;
 		if (!((__u32)cr & 0x00000400))
 			continue;	/* disabled */
 		base = (unsigned long)(cr >> 49) << 21;
 		size = (((unsigned long)(cr >> 33) & 0x7fff) + 1) << 21;
 		printk(" CR%d:%016llx", i, (unsigned long long)cr);
 		tx4927_sdram_resource[i].name = "SDRAM";
 		tx4927_sdram_resource[i].start = base;
 		tx4927_sdram_resource[i].end = base + size - 1;
 		tx4927_sdram_resource[i].flags = IORESOURCE_MEM;
 		request_resource(&iomem_resource, &tx4927_sdram_resource[i]);
 	}
 	printk(" TR:%09llx\n",
 	       (unsigned long long)____raw_readq(&tx4927_sdramcptr->tr));

 	/* TMR */
 	/* disable all timers */
 	for (i = 0; i < TX4927_NR_TMR; i++)
 		txx9_tmr_init(TX4927_TMR_REG(i) & 0xfffffffffULL);

 	/* PIO */
 	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, 0, TX4927_NUM_PIO);
 	__raw_writel(0, &tx4927_pioptr->maskcpu);
 	__raw_writel(0, &tx4927_pioptr->maskext);

 	_machine_restart = tx4927_machine_restart;
 	board_be_init = tx4927_be_init;
 }

 void __init tx4927_time_init(unsigned int tmrnr)
 {
 	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS)
 		txx9_clockevent_init(TX4927_TMR_REG(tmrnr) & 0xfffffffffULL,
 				     TXX9_IRQ_BASE + TX4927_IR_TMR(tmrnr),
 				     TXX9_IMCLK);
 }

 void __init tx4927_sio_init(unsigned int sclk, unsigned int cts_mask)
 {
 	int i;

 	for (i = 0; i < 2; i++)
 		txx9_sio_init(TX4927_SIO_REG(i) & 0xfffffffffULL,
 			      TXX9_IRQ_BASE + TX4927_IR_SIO(i),
 			      i, sclk, (1 << i) & cts_mask);
 }

 void __init tx4927_mtd_init(int ch)
 {
 	struct physmap_flash_data pdata = {
 		.width = TX4927_EBUSC_WIDTH(ch) / 8,
 	};
 	unsigned long start = txx9_ce_res[ch].start;
 	unsigned long size = txx9_ce_res[ch].end - start + 1;

 	if (!(TX4927_EBUSC_CR(ch) & 0x8))
 		return;	/* disabled */
 	txx9_physmap_flash_init(ch, start, size, &pdata);
 }

 void __init tx4927_dmac_init(int memcpy_chan)
 {
 	struct txx9dmac_platform_data plat_data = {
 		.memcpy_chan = memcpy_chan,
 		.have_64bit_regs = true,
 	};

 	txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL,
 		       TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data);
 }

 void __init tx4927_aclc_init(unsigned int dma_chan_out,
 			     unsigned int dma_chan_in)
 {
 	u64 pcfg = __raw_readq(&tx4927_ccfgptr->pcfg);
 	__u64 dmasel_mask = 0, dmasel = 0;
 	unsigned long flags;

 	if (!(pcfg & TX4927_PCFG_SEL2))
 		return;
 	/* setup DMASEL (playback:ACLC ch0, capture:ACLC ch1) */
 	switch (dma_chan_out) {
 	case 0:
 		dmasel_mask |= TX4927_PCFG_DMASEL0_MASK;
 		dmasel |= TX4927_PCFG_DMASEL0_ACL0;
 		break;
 	case 2:
 		dmasel_mask |= TX4927_PCFG_DMASEL2_MASK;
 		dmasel |= TX4927_PCFG_DMASEL2_ACL0;
 		break;
 	default:
 		return;
 	}
 	switch (dma_chan_in) {
 	case 1:
 		dmasel_mask |= TX4927_PCFG_DMASEL1_MASK;
 		dmasel |= TX4927_PCFG_DMASEL1_ACL1;
 		break;
 	case 3:
 		dmasel_mask |= TX4927_PCFG_DMASEL3_MASK;
 		dmasel |= TX4927_PCFG_DMASEL3_ACL1;
 		break;
 	default:
 		return;
 	}
 	local_irq_save(flags);
 	txx9_clear64(&tx4927_ccfgptr->pcfg, dmasel_mask);
 	txx9_set64(&tx4927_ccfgptr->pcfg, dmasel);
 	local_irq_restore(flags);
 	txx9_aclc_init(TX4927_ACLC_REG & 0xfffffffffULL,
 		       TXX9_IRQ_BASE + TX4927_IR_ACLC,
 		       0, dma_chan_out, dma_chan_in);
 }

 static void __init tx4927_stop_unused_modules(void)
 {
 	__u64 pcfg, rst = 0, ckd = 0;
 	char buf[128];

 	buf[0] = '\0';
 	local_irq_disable();
 	pcfg = ____raw_readq(&tx4927_ccfgptr->pcfg);
 	if (!(pcfg & TX4927_PCFG_SEL2)) {
 		rst |= TX4927_CLKCTR_ACLRST;
 		ckd |= TX4927_CLKCTR_ACLCKD;
 		strcat(buf, " ACLC");
 	}
 	if (rst | ckd) {
 		txx9_set64(&tx4927_ccfgptr->clkctr, rst);
 		txx9_set64(&tx4927_ccfgptr->clkctr, ckd);
 	}
 	local_irq_enable();
 	if (buf[0])
 		pr_info("%s: stop%s\n", txx9_pcode_str, buf);
 }

 static int __init tx4927_late_init(void)
 {
 	if (txx9_pcode != 0x4927)
 		return -ENODEV;
 	tx4927_stop_unused_modules();
 	return 0;
 }
 late_initcall(tx4927_late_init);
	/*
	* TX4927 setup routines
	* Based on linux/arch/mips/txx9/rbtx4938/setup.c,
	* and RBTX49xx patch from CELF patch archive.
	*
	* 2003-2005 (c) MontaVista Software, Inc.
	* (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
	*
	* This file is subject to the terms and conditions of the GNU General Public
	* License. See the file "COPYING" in the main directory of this archive
	* for more details.
	*/
	#include <linux/init.h>
	#include <linux/ioport.h>
	#include <linux/delay.h>
	#include <linux/param.h>
	#include <linux/ptrace.h>
	#include <linux/mtd/physmap.h>
	#include <asm/reboot.h>
	#include <asm/traps.h>
	#include <asm/txx9irq.h>
	#include <asm/txx9tmr.h>
	#include <asm/txx9pio.h>
	#include <asm/txx9/generic.h>
	#include <asm/txx9/dmac.h>
	#include <asm/txx9/tx4927.h>

	static void __init tx4927_wdr_init(void)
	{
	/* report watchdog reset status */
	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST)
	pr_warning("Watchdog reset detected at 0x%lx\n",
	read_c0_errorepc());
	/* clear WatchDogReset (W1C) */
	tx4927_ccfg_set(TX4927_CCFG_WDRST);
	/* do reset on watchdog */
	tx4927_ccfg_set(TX4927_CCFG_WR);
	}

	void __init tx4927_wdt_init(void)
	{
	txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL);
	}

	static void tx4927_machine_restart(char *command)
	{
	local_irq_disable();
	pr_emerg("Rebooting (with %s watchdog reset)...\n",
	(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) ?
	"external" : "internal");
	/* clear watchdog status */
	tx4927_ccfg_set(TX4927_CCFG_WDRST); /* W1C */
	txx9_wdt_now(TX4927_TMR_REG(2) & 0xfffffffffULL);
	while (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST))
	;
	mdelay(10);
	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) {
	pr_emerg("Rebooting (with internal watchdog reset)...\n");
	/* External WDRST failed. Do internal watchdog reset */
	tx4927_ccfg_clear(TX4927_CCFG_WDREXEN);
	}
	/* fallback */
	(*_machine_halt)();
	}

	void show_registers(struct pt_regs *regs);
	static int tx4927_be_handler(struct pt_regs *regs, int is_fixup)
	{
	int data = regs->cp0_cause & 4;
	console_verbose();
	pr_err("%cBE exception at %#lx\n", data ? 'D' : 'I', regs->cp0_epc);
	pr_err("ccfg:%llx, toea:%llx\n",
	(unsigned long long)____raw_readq(&tx4927_ccfgptr->ccfg),
	(unsigned long long)____raw_readq(&tx4927_ccfgptr->toea));
	#ifdef CONFIG_PCI
	tx4927_report_pcic_status();
	#endif
	show_registers(regs);
	panic("BusError!");
	}
	static void __init tx4927_be_init(void)
	{
	board_be_handler = tx4927_be_handler;
	}

	static struct resource tx4927_sdram_resource[4];

	void __init tx4927_setup(void)
	{
	int i;
	__u32 divmode;
	unsigned int cpuclk = 0;
	u64 ccfg;

	txx9_reg_res_init(TX4927_REV_PCODE(), TX4927_REG_BASE,
	TX4927_REG_SIZE);
	set_c0_config(TX49_CONF_CWFON);

	/* SDRAMC,EBUSC are configured by PROM */
	for (i = 0; i < 8; i++) {
	if (!(TX4927_EBUSC_CR(i) & 0x8))
	continue; /* disabled */
	txx9_ce_res[i].start = (unsigned long)TX4927_EBUSC_BA(i);
	txx9_ce_res[i].end =
	txx9_ce_res[i].start + TX4927_EBUSC_SIZE(i) - 1;
	request_resource(&iomem_resource, &txx9_ce_res[i]);
	}

	/* clocks */
	ccfg = ____raw_readq(&tx4927_ccfgptr->ccfg);
	if (txx9_master_clock) {
	/* calculate gbus_clock and cpu_clock from master_clock */
	divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
	switch (divmode) {
	case TX4927_CCFG_DIVMODE_8:
	case TX4927_CCFG_DIVMODE_10:
	case TX4927_CCFG_DIVMODE_12:
	case TX4927_CCFG_DIVMODE_16:
	txx9_gbus_clock = txx9_master_clock * 4; break;
	default:
	txx9_gbus_clock = txx9_master_clock;
	}
	switch (divmode) {
	case TX4927_CCFG_DIVMODE_2:
	case TX4927_CCFG_DIVMODE_8:
	cpuclk = txx9_gbus_clock * 2; break;
	case TX4927_CCFG_DIVMODE_2_5:
	case TX4927_CCFG_DIVMODE_10:
	cpuclk = txx9_gbus_clock * 5 / 2; break;
	case TX4927_CCFG_DIVMODE_3:
	case TX4927_CCFG_DIVMODE_12:
	cpuclk = txx9_gbus_clock * 3; break;
	case TX4927_CCFG_DIVMODE_4:
	case TX4927_CCFG_DIVMODE_16:
	cpuclk = txx9_gbus_clock * 4; break;
	}
	txx9_cpu_clock = cpuclk;
	} else {
	if (txx9_cpu_clock == 0)
	txx9_cpu_clock = 200000000; /* 200MHz */
	/* calculate gbus_clock and master_clock from cpu_clock */
	cpuclk = txx9_cpu_clock;
	divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
	switch (divmode) {
	case TX4927_CCFG_DIVMODE_2:
	case TX4927_CCFG_DIVMODE_8:
	txx9_gbus_clock = cpuclk / 2; break;
	case TX4927_CCFG_DIVMODE_2_5:
	case TX4927_CCFG_DIVMODE_10:
	txx9_gbus_clock = cpuclk * 2 / 5; break;
	case TX4927_CCFG_DIVMODE_3:
	case TX4927_CCFG_DIVMODE_12:
	txx9_gbus_clock = cpuclk / 3; break;
	case TX4927_CCFG_DIVMODE_4:
	case TX4927_CCFG_DIVMODE_16:
	txx9_gbus_clock = cpuclk / 4; break;
	}
	switch (divmode) {
	case TX4927_CCFG_DIVMODE_8:
	case TX4927_CCFG_DIVMODE_10:
	case TX4927_CCFG_DIVMODE_12:
	case TX4927_CCFG_DIVMODE_16:
	txx9_master_clock = txx9_gbus_clock / 4; break;
	default:
	txx9_master_clock = txx9_gbus_clock;
	}
	}
	/* change default value to udelay/mdelay take reasonable time */
	loops_per_jiffy = txx9_cpu_clock / HZ / 2;

	/* CCFG */
	tx4927_wdr_init();
	/* clear BusErrorOnWrite flag (W1C) */
	tx4927_ccfg_set(TX4927_CCFG_BEOW);
	/* enable Timeout BusError */
	if (txx9_ccfg_toeon)
	tx4927_ccfg_set(TX4927_CCFG_TOE);

	/* DMA selection */
	txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_DMASEL_ALL);

	/* Use external clock for external arbiter */
	if (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB))
	txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_PCICLKEN_ALL);

	printk(KERN_INFO "%s -- %dMHz(M%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
	txx9_pcode_str,
	(cpuclk + 500000) / 1000000,
	(txx9_master_clock + 500000) / 1000000,
	(__u32)____raw_readq(&tx4927_ccfgptr->crir),
	(unsigned long long)____raw_readq(&tx4927_ccfgptr->ccfg),
	(unsigned long long)____raw_readq(&tx4927_ccfgptr->pcfg));

	printk(KERN_INFO "%s SDRAMC --", txx9_pcode_str);
	for (i = 0; i < 4; i++) {
	__u64 cr = TX4927_SDRAMC_CR(i);
	unsigned long base, size;
	if (!((__u32)cr & 0x00000400))
	continue; /* disabled */
	base = (unsigned long)(cr >> 49) << 21;
	size = (((unsigned long)(cr >> 33) & 0x7fff) + 1) << 21;
	printk(" CR%d:%016llx", i, (unsigned long long)cr);
	tx4927_sdram_resource[i].name = "SDRAM";
	tx4927_sdram_resource[i].start = base;
	tx4927_sdram_resource[i].end = base + size - 1;
	tx4927_sdram_resource[i].flags = IORESOURCE_MEM;
	request_resource(&iomem_resource, &tx4927_sdram_resource[i]);
	}
	printk(" TR:%09llx\n",
	(unsigned long long)____raw_readq(&tx4927_sdramcptr->tr));

	/* TMR */
	/* disable all timers */
	for (i = 0; i < TX4927_NR_TMR; i++)
	txx9_tmr_init(TX4927_TMR_REG(i) & 0xfffffffffULL);

	/* PIO */
	txx9_gpio_init(TX4927_PIO_REG & 0xfffffffffULL, 0, TX4927_NUM_PIO);
	__raw_writel(0, &tx4927_pioptr->maskcpu);
	__raw_writel(0, &tx4927_pioptr->maskext);

	_machine_restart = tx4927_machine_restart;
	board_be_init = tx4927_be_init;
	}

	void __init tx4927_time_init(unsigned int tmrnr)
	{
	if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS)
	txx9_clockevent_init(TX4927_TMR_REG(tmrnr) & 0xfffffffffULL,
	TXX9_IRQ_BASE + TX4927_IR_TMR(tmrnr),
	TXX9_IMCLK);
	}

	void __init tx4927_sio_init(unsigned int sclk, unsigned int cts_mask)
	{
	int i;

	for (i = 0; i < 2; i++)
	txx9_sio_init(TX4927_SIO_REG(i) & 0xfffffffffULL,
	TXX9_IRQ_BASE + TX4927_IR_SIO(i),
	i, sclk, (1 << i) & cts_mask);
	}

	void __init tx4927_mtd_init(int ch)
	{
	struct physmap_flash_data pdata = {
	.width = TX4927_EBUSC_WIDTH(ch) / 8,
	};
	unsigned long start = txx9_ce_res[ch].start;
	unsigned long size = txx9_ce_res[ch].end - start + 1;

	if (!(TX4927_EBUSC_CR(ch) & 0x8))
	return; /* disabled */
	txx9_physmap_flash_init(ch, start, size, &pdata);
	}

	void __init tx4927_dmac_init(int memcpy_chan)
	{
	struct txx9dmac_platform_data plat_data = {
	.memcpy_chan = memcpy_chan,
	.have_64bit_regs = true,
	};

	txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL,
	TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data);
	}

	void __init tx4927_aclc_init(unsigned int dma_chan_out,
	unsigned int dma_chan_in)
	{
	u64 pcfg = __raw_readq(&tx4927_ccfgptr->pcfg);
	__u64 dmasel_mask = 0, dmasel = 0;
	unsigned long flags;

	if (!(pcfg & TX4927_PCFG_SEL2))
	return;
	/* setup DMASEL (playback:ACLC ch0, capture:ACLC ch1) */
	switch (dma_chan_out) {
	case 0:
	dmasel_mask \|= TX4927_PCFG_DMASEL0_MASK;
	dmasel \|= TX4927_PCFG_DMASEL0_ACL0;
	break;
	case 2:
	dmasel_mask \|= TX4927_PCFG_DMASEL2_MASK;
	dmasel \|= TX4927_PCFG_DMASEL2_ACL0;
	break;
	default:
	return;
	}
	switch (dma_chan_in) {
	case 1:
	dmasel_mask \|= TX4927_PCFG_DMASEL1_MASK;
	dmasel \|= TX4927_PCFG_DMASEL1_ACL1;
	break;
	case 3:
	dmasel_mask \|= TX4927_PCFG_DMASEL3_MASK;
	dmasel \|= TX4927_PCFG_DMASEL3_ACL1;
	break;
	default:
	return;
	}
	local_irq_save(flags);
	txx9_clear64(&tx4927_ccfgptr->pcfg, dmasel_mask);
	txx9_set64(&tx4927_ccfgptr->pcfg, dmasel);
	local_irq_restore(flags);
	txx9_aclc_init(TX4927_ACLC_REG & 0xfffffffffULL,
	TXX9_IRQ_BASE + TX4927_IR_ACLC,
	0, dma_chan_out, dma_chan_in);
	}

	static void __init tx4927_stop_unused_modules(void)
	{
	__u64 pcfg, rst = 0, ckd = 0;
	char buf[128];

	buf[0] = '\0';
	local_irq_disable();
	pcfg = ____raw_readq(&tx4927_ccfgptr->pcfg);
	if (!(pcfg & TX4927_PCFG_SEL2)) {
	rst \|= TX4927_CLKCTR_ACLRST;
	ckd \|= TX4927_CLKCTR_ACLCKD;
	strcat(buf, " ACLC");
	}
	if (rst \| ckd) {
	txx9_set64(&tx4927_ccfgptr->clkctr, rst);
	txx9_set64(&tx4927_ccfgptr->clkctr, ckd);
	}
	local_irq_enable();
	if (buf[0])
	pr_info("%s: stop%s\n", txx9_pcode_str, buf);
	}

	static int __init tx4927_late_init(void)
	{
	if (txx9_pcode != 0x4927)
	return -ENODEV;
	tx4927_stop_unused_modules();
	return 0;
	}
	late_initcall(tx4927_late_init);