1 files changed, 853 insertions, 0 deletions

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
new file mode 100644
index 0000000000..b098a3c76a
--- /dev/null
+++ b/arch/mips/txx9/generic/setup.c
@@ -0,0 +1,853 @@
+/*
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/string.h>
+#include <linux/export.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/gpio/driver.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/txx9/ndfmc.h>
+#include <linux/serial_core.h>
+#include <linux/mtd/physmap.h>
+#include <linux/leds.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <asm/bootinfo.h>
+#include <asm/idle.h>
+#include <asm/time.h>
+#include <asm/reboot.h>
+#include <asm/r4kcache.h>
+#include <asm/setup.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9tmr.h>
+#include <asm/txx9/dmac.h>
+#ifdef CONFIG_CPU_TX49XX
+#include <asm/txx9/tx4938.h>
+#endif
+
+/* EBUSC settings of TX4927, etc. */
+struct resource txx9_ce_res[8];
+static char txx9_ce_res_name[8][4];	/* "CEn" */
+
+/* pcode, internal register */
+unsigned int txx9_pcode;
+char txx9_pcode_str[8];
+static struct resource txx9_reg_res = {
+	.name = txx9_pcode_str,
+	.flags = IORESOURCE_MEM,
+};
+void __init
+txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
+		sprintf(txx9_ce_res_name[i], "CE%d", i);
+		txx9_ce_res[i].flags = IORESOURCE_MEM;
+		txx9_ce_res[i].name = txx9_ce_res_name[i];
+	}
+
+	txx9_pcode = pcode;
+	sprintf(txx9_pcode_str, "TX%x", pcode);
+	if (base) {
+		txx9_reg_res.start = base & 0xfffffffffULL;
+		txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
+		request_resource(&iomem_resource, &txx9_reg_res);
+	}
+}
+
+/* clocks */
+unsigned int txx9_master_clock;
+unsigned int txx9_cpu_clock;
+unsigned int txx9_gbus_clock;
+
+int txx9_ccfg_toeon __initdata = 1;
+
+#define BOARD_VEC(board)	extern struct txx9_board_vec board;
+#include <asm/txx9/boards.h>
+#undef BOARD_VEC
+
+struct txx9_board_vec *txx9_board_vec __initdata;
+static char txx9_system_type[32];
+
+static struct txx9_board_vec *board_vecs[] __initdata = {
+#define BOARD_VEC(board)	&board,
+#include <asm/txx9/boards.h>
+#undef BOARD_VEC
+};
+
+static struct txx9_board_vec *__init find_board_byname(const char *name)
+{
+	int i;
+
+	/* search board_vecs table */
+	for (i = 0; i < ARRAY_SIZE(board_vecs); i++) {
+		if (strstr(board_vecs[i]->system, name))
+			return board_vecs[i];
+	}
+	return NULL;
+}
+
+static void __init prom_init_cmdline(void)
+{
+	int argc;
+	int *argv32;
+	int i;			/* Always ignore the "-c" at argv[0] */
+
+	if (fw_arg0 >= CKSEG0 || fw_arg1 < CKSEG0) {
+		/*
+		 * argc is not a valid number, or argv32 is not a valid
+		 * pointer
+		 */
+		argc = 0;
+		argv32 = NULL;
+	} else {
+		argc = (int)fw_arg0;
+		argv32 = (int *)fw_arg1;
+	}
+
+	arcs_cmdline[0] = '\0';
+
+	for (i = 1; i < argc; i++) {
+		char *str = (char *)(long)argv32[i];
+		if (i != 1)
+			strcat(arcs_cmdline, " ");
+		if (strchr(str, ' ')) {
+			strcat(arcs_cmdline, "\"");
+			strcat(arcs_cmdline, str);
+			strcat(arcs_cmdline, "\"");
+		} else
+			strcat(arcs_cmdline, str);
+	}
+}
+
+static int txx9_ic_disable __initdata;
+static int txx9_dc_disable __initdata;
+
+#if defined(CONFIG_CPU_TX49XX)
+/* flush all cache on very early stage (before 4k_cache_init) */
+static void __init early_flush_dcache(void)
+{
+	unsigned int conf = read_c0_config();
+	unsigned int dc_size = 1 << (12 + ((conf & CONF_DC) >> 6));
+	unsigned int linesz = 32;
+	unsigned long addr, end;
+
+	end = INDEX_BASE + dc_size / 4;
+	/* 4way, waybit=0 */
+	for (addr = INDEX_BASE; addr < end; addr += linesz) {
+		cache_op(Index_Writeback_Inv_D, addr | 0);
+		cache_op(Index_Writeback_Inv_D, addr | 1);
+		cache_op(Index_Writeback_Inv_D, addr | 2);
+		cache_op(Index_Writeback_Inv_D, addr | 3);
+	}
+}
+
+static void __init txx9_cache_fixup(void)
+{
+	unsigned int conf;
+
+	conf = read_c0_config();
+	/* flush and disable */
+	if (txx9_ic_disable) {
+		conf |= TX49_CONF_IC;
+		write_c0_config(conf);
+	}
+	if (txx9_dc_disable) {
+		early_flush_dcache();
+		conf |= TX49_CONF_DC;
+		write_c0_config(conf);
+	}
+
+	/* enable cache */
+	conf = read_c0_config();
+	if (!txx9_ic_disable)
+		conf &= ~TX49_CONF_IC;
+	if (!txx9_dc_disable)
+		conf &= ~TX49_CONF_DC;
+	write_c0_config(conf);
+
+	if (conf & TX49_CONF_IC)
+		pr_info("TX49XX I-Cache disabled.\n");
+	if (conf & TX49_CONF_DC)
+		pr_info("TX49XX D-Cache disabled.\n");
+}
+#else
+static inline void txx9_cache_fixup(void)
+{
+}
+#endif
+
+static void __init preprocess_cmdline(void)
+{
+	static char cmdline[COMMAND_LINE_SIZE] __initdata;
+	char *s;
+
+	strcpy(cmdline, arcs_cmdline);
+	s = cmdline;
+	arcs_cmdline[0] = '\0';
+	while (s && *s) {
+		char *str = strsep(&s, " ");
+		if (strncmp(str, "board=", 6) == 0) {
+			txx9_board_vec = find_board_byname(str + 6);
+			continue;
+		} else if (strncmp(str, "masterclk=", 10) == 0) {
+			unsigned int val;
+			if (kstrtouint(str + 10, 10, &val) == 0)
+				txx9_master_clock = val;
+			continue;
+		} else if (strcmp(str, "icdisable") == 0) {
+			txx9_ic_disable = 1;
+			continue;
+		} else if (strcmp(str, "dcdisable") == 0) {
+			txx9_dc_disable = 1;
+			continue;
+		} else if (strcmp(str, "toeoff") == 0) {
+			txx9_ccfg_toeon = 0;
+			continue;
+		} else if (strcmp(str, "toeon") == 0) {
+			txx9_ccfg_toeon = 1;
+			continue;
+		}
+		if (arcs_cmdline[0])
+			strcat(arcs_cmdline, " ");
+		strcat(arcs_cmdline, str);
+	}
+
+	txx9_cache_fixup();
+}
+
+static void __init select_board(void)
+{
+	const char *envstr;
+
+	/* first, determine by "board=" argument in preprocess_cmdline() */
+	if (txx9_board_vec)
+		return;
+	/* next, determine by "board" envvar */
+	envstr = prom_getenv("board");
+	if (envstr) {
+		txx9_board_vec = find_board_byname(envstr);
+		if (txx9_board_vec)
+			return;
+	}
+
+	/* select "default" board */
+#ifdef CONFIG_CPU_TX49XX
+	switch (TX4938_REV_PCODE()) {
+#ifdef CONFIG_TOSHIBA_RBTX4927
+	case 0x4927:
+		txx9_board_vec = &rbtx4927_vec;
+		break;
+	case 0x4937:
+		txx9_board_vec = &rbtx4937_vec;
+		break;
+#endif
+	}
+#endif
+}
+
+void __init prom_init(void)
+{
+	prom_init_cmdline();
+	preprocess_cmdline();
+	select_board();
+
+	strcpy(txx9_system_type, txx9_board_vec->system);
+
+	txx9_board_vec->prom_init();
+}
+
+const char *get_system_type(void)
+{
+	return txx9_system_type;
+}
+
+const char *__init prom_getenv(const char *name)
+{
+	const s32 *str;
+
+	if (fw_arg2 < CKSEG0)
+		return NULL;
+
+	str = (const s32 *)fw_arg2;
+	/* YAMON style ("name", "value" pairs) */
+	while (str[0] && str[1]) {
+		if (!strcmp((const char *)(unsigned long)str[0], name))
+			return (const char *)(unsigned long)str[1];
+		str += 2;
+	}
+	return NULL;
+}
+
+static void __noreturn txx9_machine_halt(void)
+{
+	local_irq_disable();
+	clear_c0_status(ST0_IM);
+	while (1) {
+		if (cpu_wait) {
+			(*cpu_wait)();
+			if (cpu_has_counter) {
+				/*
+				 * Clear counter interrupt while it
+				 * breaks WAIT instruction even if
+				 * masked.
+				 */
+				write_c0_compare(0);
+			}
+		}
+	}
+}
+
+/* Watchdog support */
+void __init txx9_wdt_init(unsigned long base)
+{
+	struct resource res = {
+		.start	= base,
+		.end	= base + 0x100 - 1,
+		.flags	= IORESOURCE_MEM,
+	};
+	platform_device_register_simple("txx9wdt", -1, &res, 1);
+}
+
+void txx9_wdt_now(unsigned long base)
+{
+	struct txx9_tmr_reg __iomem *tmrptr =
+		ioremap(base, sizeof(struct txx9_tmr_reg));
+	/* disable watch dog timer */
+	__raw_writel(TXx9_TMWTMR_WDIS | TXx9_TMWTMR_TWC, &tmrptr->wtmr);
+	__raw_writel(0, &tmrptr->tcr);
+	/* kick watchdog */
+	__raw_writel(TXx9_TMWTMR_TWIE, &tmrptr->wtmr);
+	__raw_writel(1, &tmrptr->cpra); /* immediate */
+	__raw_writel(TXx9_TMTCR_TCE | TXx9_TMTCR_CCDE | TXx9_TMTCR_TMODE_WDOG,
+		     &tmrptr->tcr);
+}
+
+/* SPI support */
+void __init txx9_spi_init(int busid, unsigned long base, int irq)
+{
+	struct resource res[] = {
+		{
+			.start	= base,
+			.end	= base + 0x20 - 1,
+			.flags	= IORESOURCE_MEM,
+		}, {
+			.start	= irq,
+			.flags	= IORESOURCE_IRQ,
+		},
+	};
+	platform_device_register_simple("spi_txx9", busid,
+					res, ARRAY_SIZE(res));
+}
+
+void __init txx9_ethaddr_init(unsigned int id, unsigned char *ethaddr)
+{
+	struct platform_device *pdev =
+		platform_device_alloc("tc35815-mac", id);
+	if (!pdev ||
+	    platform_device_add_data(pdev, ethaddr, 6) ||
+	    platform_device_add(pdev))
+		platform_device_put(pdev);
+}
+
+void __init txx9_sio_init(unsigned long baseaddr, int irq,
+			  unsigned int line, unsigned int sclk, int nocts)
+{
+#ifdef CONFIG_SERIAL_TXX9
+	struct uart_port req;
+
+	memset(&req, 0, sizeof(req));
+	req.line = line;
+	req.iotype = UPIO_MEM;
+	req.membase = ioremap(baseaddr, 0x24);
+	req.mapbase = baseaddr;
+	req.irq = irq;
+	if (!nocts)
+		req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/;
+	if (sclk) {
+		req.flags |= UPF_MAGIC_MULTIPLIER /*USE_SCLK*/;
+		req.uartclk = sclk;
+	} else
+		req.uartclk = TXX9_IMCLK;
+	early_serial_txx9_setup(&req);
+#endif /* CONFIG_SERIAL_TXX9 */
+}
+
+#ifdef CONFIG_EARLY_PRINTK
+static void null_prom_putchar(char c)
+{
+}
+void (*txx9_prom_putchar)(char c) = null_prom_putchar;
+
+void prom_putchar(char c)
+{
+	txx9_prom_putchar(c);
+}
+
+static void __iomem *early_txx9_sio_port;
+
+static void early_txx9_sio_putchar(char c)
+{
+#define TXX9_SICISR	0x0c
+#define TXX9_SITFIFO	0x1c
+#define TXX9_SICISR_TXALS	0x00000002
+	while (!(__raw_readl(early_txx9_sio_port + TXX9_SICISR) &
+		 TXX9_SICISR_TXALS))
+		;
+	__raw_writel(c, early_txx9_sio_port + TXX9_SITFIFO);
+}
+
+void __init txx9_sio_putchar_init(unsigned long baseaddr)
+{
+	early_txx9_sio_port = ioremap(baseaddr, 0x24);
+	txx9_prom_putchar = early_txx9_sio_putchar;
+}
+#endif /* CONFIG_EARLY_PRINTK */
+
+/* wrappers */
+void __init plat_mem_setup(void)
+{
+	ioport_resource.start = 0;
+	ioport_resource.end = ~0UL;	/* no limit */
+	iomem_resource.start = 0;
+	iomem_resource.end = ~0UL;	/* no limit */
+
+	/* fallback restart/halt routines */
+	_machine_restart = (void (*)(char *))txx9_machine_halt;
+	_machine_halt = txx9_machine_halt;
+	pm_power_off = txx9_machine_halt;
+
+#ifdef CONFIG_PCI
+	pcibios_plat_setup = txx9_pcibios_setup;
+#endif
+	txx9_board_vec->mem_setup();
+}
+
+void __init arch_init_irq(void)
+{
+	txx9_board_vec->irq_setup();
+}
+
+void __init plat_time_init(void)
+{
+#ifdef CONFIG_CPU_TX49XX
+	mips_hpt_frequency = txx9_cpu_clock / 2;
+#endif
+	txx9_board_vec->time_init();
+}
+
+static void txx9_clk_init(void)
+{
+	struct clk_hw *hw;
+	int error;
+
+	hw = clk_hw_register_fixed_rate(NULL, "gbus", NULL, 0, txx9_gbus_clock);
+	if (IS_ERR(hw)) {
+		error = PTR_ERR(hw);
+		goto fail;
+	}
+
+	hw = clk_hw_register_fixed_factor(NULL, "imbus", "gbus", 0, 1, 2);
+	error = clk_hw_register_clkdev(hw, "imbus_clk", NULL);
+	if (error)
+		goto fail;
+
+#ifdef CONFIG_CPU_TX49XX
+	if (TX4938_REV_PCODE() == 0x4938) {
+		hw = clk_hw_register_fixed_factor(NULL, "spi", "gbus", 0, 1, 4);
+		error = clk_hw_register_clkdev(hw, "spi-baseclk", NULL);
+		if (error)
+			goto fail;
+	}
+#endif
+
+	return;
+
+fail:
+	pr_err("Failed to register clocks: %d\n", error);
+}
+
+static int __init _txx9_arch_init(void)
+{
+	txx9_clk_init();
+
+	if (txx9_board_vec->arch_init)
+		txx9_board_vec->arch_init();
+	return 0;
+}
+arch_initcall(_txx9_arch_init);
+
+static int __init _txx9_device_init(void)
+{
+	if (txx9_board_vec->device_init)
+		txx9_board_vec->device_init();
+	return 0;
+}
+device_initcall(_txx9_device_init);
+
+int (*txx9_irq_dispatch)(int pending);
+asmlinkage void plat_irq_dispatch(void)
+{
+	int pending = read_c0_status() & read_c0_cause() & ST0_IM;
+	int irq = txx9_irq_dispatch(pending);
+
+	if (likely(irq >= 0))
+		do_IRQ(irq);
+	else
+		spurious_interrupt();
+}
+
+/* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
+#ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
+static unsigned long __swizzle_addr_none(unsigned long port)
+{
+	return port;
+}
+unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
+EXPORT_SYMBOL(__swizzle_addr_b);
+#endif
+
+void __init txx9_physmap_flash_init(int no, unsigned long addr,
+				    unsigned long size,
+				    const struct physmap_flash_data *pdata)
+{
+#if IS_ENABLED(CONFIG_MTD_PHYSMAP)
+	struct resource res = {
+		.start = addr,
+		.end = addr + size - 1,
+		.flags = IORESOURCE_MEM,
+	};
+	struct platform_device *pdev;
+	static struct mtd_partition parts[2];
+	struct physmap_flash_data pdata_part;
+
+	/* If this area contained boot area, make separate partition */
+	if (pdata->nr_parts == 0 && !pdata->parts &&
+	    addr < 0x1fc00000 && addr + size > 0x1fc00000 &&
+	    !parts[0].name) {
+		parts[0].name = "boot";
+		parts[0].offset = 0x1fc00000 - addr;
+		parts[0].size = addr + size - 0x1fc00000;
+		parts[1].name = "user";
+		parts[1].offset = 0;
+		parts[1].size = 0x1fc00000 - addr;
+		pdata_part = *pdata;
+		pdata_part.nr_parts = ARRAY_SIZE(parts);
+		pdata_part.parts = parts;
+		pdata = &pdata_part;
+	}
+
+	pdev = platform_device_alloc("physmap-flash", no);
+	if (!pdev ||
+	    platform_device_add_resources(pdev, &res, 1) ||
+	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+	    platform_device_add(pdev))
+		platform_device_put(pdev);
+#endif
+}
+
+void __init txx9_ndfmc_init(unsigned long baseaddr,
+			    const struct txx9ndfmc_platform_data *pdata)
+{
+#if IS_ENABLED(CONFIG_MTD_NAND_TXX9NDFMC)
+	struct resource res = {
+		.start = baseaddr,
+		.end = baseaddr + 0x1000 - 1,
+		.flags = IORESOURCE_MEM,
+	};
+	struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
+
+	if (!pdev ||
+	    platform_device_add_resources(pdev, &res, 1) ||
+	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+	    platform_device_add(pdev))
+		platform_device_put(pdev);
+#endif
+}
+
+#if IS_ENABLED(CONFIG_LEDS_GPIO)
+static DEFINE_SPINLOCK(txx9_iocled_lock);
+
+#define TXX9_IOCLED_MAXLEDS 8
+
+struct txx9_iocled_data {
+	struct gpio_chip chip;
+	u8 cur_val;
+	void __iomem *mmioaddr;
+	struct gpio_led_platform_data pdata;
+	struct gpio_led leds[TXX9_IOCLED_MAXLEDS];
+	char names[TXX9_IOCLED_MAXLEDS][32];
+};
+
+static int txx9_iocled_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct txx9_iocled_data *data = gpiochip_get_data(chip);
+	return !!(data->cur_val & (1 << offset));
+}
+
+static void txx9_iocled_set(struct gpio_chip *chip, unsigned int offset,
+			    int value)
+{
+	struct txx9_iocled_data *data = gpiochip_get_data(chip);
+	unsigned long flags;
+	spin_lock_irqsave(&txx9_iocled_lock, flags);
+	if (value)
+		data->cur_val |= 1 << offset;
+	else
+		data->cur_val &= ~(1 << offset);
+	writeb(data->cur_val, data->mmioaddr);
+	mmiowb();
+	spin_unlock_irqrestore(&txx9_iocled_lock, flags);
+}
+
+static int txx9_iocled_dir_in(struct gpio_chip *chip, unsigned int offset)
+{
+	return 0;
+}
+
+static int txx9_iocled_dir_out(struct gpio_chip *chip, unsigned int offset,
+			       int value)
+{
+	txx9_iocled_set(chip, offset, value);
+	return 0;
+}
+
+void __init txx9_iocled_init(unsigned long baseaddr,
+			     int basenum, unsigned int num, int lowactive,
+			     const char *color, char **deftriggers)
+{
+	struct txx9_iocled_data *iocled;
+	struct platform_device *pdev;
+	int i;
+	static char *default_triggers[] __initdata = {
+		"heartbeat",
+		"disk-activity",
+		"nand-disk",
+		NULL,
+	};
+
+	if (!deftriggers)
+		deftriggers = default_triggers;
+	iocled = kzalloc(sizeof(*iocled), GFP_KERNEL);
+	if (!iocled)
+		return;
+	iocled->mmioaddr = ioremap(baseaddr, 1);
+	if (!iocled->mmioaddr)
+		goto out_free;
+	iocled->chip.get = txx9_iocled_get;
+	iocled->chip.set = txx9_iocled_set;
+	iocled->chip.direction_input = txx9_iocled_dir_in;
+	iocled->chip.direction_output = txx9_iocled_dir_out;
+	iocled->chip.label = "iocled";
+	iocled->chip.base = basenum;
+	iocled->chip.ngpio = num;
+	if (gpiochip_add_data(&iocled->chip, iocled))
+		goto out_unmap;
+	if (basenum < 0)
+		basenum = iocled->chip.base;
+
+	pdev = platform_device_alloc("leds-gpio", basenum);
+	if (!pdev)
+		goto out_gpio;
+	iocled->pdata.num_leds = num;
+	iocled->pdata.leds = iocled->leds;
+	for (i = 0; i < num; i++) {
+		struct gpio_led *led = &iocled->leds[i];
+		snprintf(iocled->names[i], sizeof(iocled->names[i]),
+			 "iocled:%s:%u", color, i);
+		led->name = iocled->names[i];
+		led->gpio = basenum + i;
+		led->active_low = lowactive;
+		if (deftriggers && *deftriggers)
+			led->default_trigger = *deftriggers++;
+	}
+	pdev->dev.platform_data = &iocled->pdata;
+	if (platform_device_add(pdev))
+		goto out_pdev;
+	return;
+
+out_pdev:
+	platform_device_put(pdev);
+out_gpio:
+	gpiochip_remove(&iocled->chip);
+out_unmap:
+	iounmap(iocled->mmioaddr);
+out_free:
+	kfree(iocled);
+}
+#else /* CONFIG_LEDS_GPIO */
+void __init txx9_iocled_init(unsigned long baseaddr,
+			     int basenum, unsigned int num, int lowactive,
+			     const char *color, char **deftriggers)
+{
+}
+#endif /* CONFIG_LEDS_GPIO */
+
+void __init txx9_dmac_init(int id, unsigned long baseaddr, int irq,
+			   const struct txx9dmac_platform_data *pdata)
+{
+#if IS_ENABLED(CONFIG_TXX9_DMAC)
+	struct resource res[] = {
+		{
+			.start = baseaddr,
+			.end = baseaddr + 0x800 - 1,
+			.flags = IORESOURCE_MEM,
+#ifndef CONFIG_MACH_TX49XX
+		}, {
+			.start = irq,
+			.flags = IORESOURCE_IRQ,
+#endif
+		}
+	};
+#ifdef CONFIG_MACH_TX49XX
+	struct resource chan_res[] = {
+		{
+			.flags = IORESOURCE_IRQ,
+		}
+	};
+#endif
+	struct platform_device *pdev = platform_device_alloc("txx9dmac", id);
+	struct txx9dmac_chan_platform_data cpdata;
+	int i;
+
+	if (!pdev ||
+	    platform_device_add_resources(pdev, res, ARRAY_SIZE(res)) ||
+	    platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+	    platform_device_add(pdev)) {
+		platform_device_put(pdev);
+		return;
+	}
+	memset(&cpdata, 0, sizeof(cpdata));
+	cpdata.dmac_dev = pdev;
+	for (i = 0; i < TXX9_DMA_MAX_NR_CHANNELS; i++) {
+#ifdef CONFIG_MACH_TX49XX
+		chan_res[0].start = irq + i;
+#endif
+		pdev = platform_device_alloc("txx9dmac-chan",
+					     id * TXX9_DMA_MAX_NR_CHANNELS + i);
+		if (!pdev ||
+#ifdef CONFIG_MACH_TX49XX
+		    platform_device_add_resources(pdev, chan_res,
+						  ARRAY_SIZE(chan_res)) ||
+#endif
+		    platform_device_add_data(pdev, &cpdata, sizeof(cpdata)) ||
+		    platform_device_add(pdev))
+			platform_device_put(pdev);
+	}
+#endif
+}
+
+void __init txx9_aclc_init(unsigned long baseaddr, int irq,
+			   unsigned int dmac_id,
+			   unsigned int dma_chan_out,
+			   unsigned int dma_chan_in)
+{
+}
+
+static struct bus_type txx9_sramc_subsys = {
+	.name = "txx9_sram",
+	.dev_name = "txx9_sram",
+};
+
+struct txx9_sramc_dev {
+	struct device dev;
+	struct bin_attribute bindata_attr;
+	void __iomem *base;
+};
+
+static ssize_t txx9_sram_read(struct file *filp, struct kobject *kobj,
+			      struct bin_attribute *bin_attr,
+			      char *buf, loff_t pos, size_t size)
+{
+	struct txx9_sramc_dev *dev = bin_attr->private;
+	size_t ramsize = bin_attr->size;
+
+	if (pos >= ramsize)
+		return 0;
+	if (pos + size > ramsize)
+		size = ramsize - pos;
+	memcpy_fromio(buf, dev->base + pos, size);
+	return size;
+}
+
+static ssize_t txx9_sram_write(struct file *filp, struct kobject *kobj,
+			       struct bin_attribute *bin_attr,
+			       char *buf, loff_t pos, size_t size)
+{
+	struct txx9_sramc_dev *dev = bin_attr->private;
+	size_t ramsize = bin_attr->size;
+
+	if (pos >= ramsize)
+		return 0;
+	if (pos + size > ramsize)
+		size = ramsize - pos;
+	memcpy_toio(dev->base + pos, buf, size);
+	return size;
+}
+
+static void txx9_device_release(struct device *dev)
+{
+	struct txx9_sramc_dev *tdev;
+
+	tdev = container_of(dev, struct txx9_sramc_dev, dev);
+	kfree(tdev);
+}
+
+void __init txx9_sramc_init(struct resource *r)
+{
+	struct txx9_sramc_dev *dev;
+	size_t size;
+	int err;
+
+	err = subsys_system_register(&txx9_sramc_subsys, NULL);
+	if (err)
+		return;
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+	if (!dev)
+		return;
+	size = resource_size(r);
+	dev->base = ioremap(r->start, size);
+	if (!dev->base) {
+		kfree(dev);
+		return;
+	}
+	dev->dev.release = &txx9_device_release;
+	dev->dev.bus = &txx9_sramc_subsys;
+	sysfs_bin_attr_init(&dev->bindata_attr);
+	dev->bindata_attr.attr.name = "bindata";
+	dev->bindata_attr.attr.mode = S_IRUSR | S_IWUSR;
+	dev->bindata_attr.read = txx9_sram_read;
+	dev->bindata_attr.write = txx9_sram_write;
+	dev->bindata_attr.size = size;
+	dev->bindata_attr.private = dev;
+	err = device_register(&dev->dev);
+	if (err)
+		goto exit_put;
+	err = sysfs_create_bin_file(&dev->dev.kobj, &dev->bindata_attr);
+	if (err) {
+		iounmap(dev->base);
+		device_unregister(&dev->dev);
+	}
+	return;
+exit_put:
+	iounmap(dev->base);
+	put_device(&dev->dev);
+}