Initial import

1 files changed, 370 insertions, 0 deletions

diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
new file mode 100644
index 000000000..c9afd0502
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -0,0 +1,370 @@
+/*
+ * Setup pointers to hardware-dependent routines.
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/reboot.h>
+#include <asm/io.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4938.h>
+#include <linux/spi/spi.h>
+#include <asm/txx9/spi.h>
+#include <asm/txx9pio.h>
+
+static void rbtx4938_machine_restart(char *command)
+{
+	local_irq_disable();
+	writeb(1, rbtx4938_softresetlock_addr);
+	writeb(1, rbtx4938_sfvol_addr);
+	writeb(1, rbtx4938_softreset_addr);
+	/* fallback */
+	(*_machine_halt)();
+}
+
+static void __init rbtx4938_pci_setup(void)
+{
+#ifdef CONFIG_PCI
+	int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
+	struct pci_controller *c = &txx9_primary_pcic;
+
+	register_pci_controller(c);
+
+	if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
+		txx9_pci_option =
+			(txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
+			TXX9_PCI_OPT_CLK_66; /* already configured */
+
+	/* Reset PCI Bus */
+	writeb(0, rbtx4938_pcireset_addr);
+	/* Reset PCIC */
+	txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_66)
+		tx4938_pciclk66_setup();
+	mdelay(10);
+	/* clear PCIC reset */
+	txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+	writeb(1, rbtx4938_pcireset_addr);
+	iob();
+
+	tx4938_report_pciclk();
+	tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+	if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+	    TXX9_PCI_OPT_CLK_AUTO &&
+	    txx9_pci66_check(c, 0, 0)) {
+		/* Reset PCI Bus */
+		writeb(0, rbtx4938_pcireset_addr);
+		/* Reset PCIC */
+		txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+		tx4938_pciclk66_setup();
+		mdelay(10);
+		/* clear PCIC reset */
+		txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+		writeb(1, rbtx4938_pcireset_addr);
+		iob();
+		/* Reinitialize PCIC */
+		tx4938_report_pciclk();
+		tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+	}
+
+	if (__raw_readq(&tx4938_ccfgptr->pcfg) &
+	    (TX4938_PCFG_ETH0_SEL|TX4938_PCFG_ETH1_SEL)) {
+		/* Reset PCIC1 */
+		txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+		/* PCI1DMD==0 => PCI1CLK==GBUSCLK/2 => PCI66 */
+		if (!(__raw_readq(&tx4938_ccfgptr->ccfg)
+		      & TX4938_CCFG_PCI1DMD))
+			tx4938_ccfg_set(TX4938_CCFG_PCI1_66);
+		mdelay(10);
+		/* clear PCIC1 reset */
+		txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+		tx4938_report_pci1clk();
+
+		/* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
+		c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
+		register_pci_controller(c);
+		tx4927_pcic_setup(tx4938_pcic1ptr, c, 0);
+	}
+	tx4938_setup_pcierr_irq();
+#endif /* CONFIG_PCI */
+}
+
+/* SPI support */
+
+/* chip select for SPI devices */
+#define SEEPROM1_CS	7	/* PIO7 */
+#define SEEPROM2_CS	0	/* IOC */
+#define SEEPROM3_CS	1	/* IOC */
+#define SRTC_CS 2	/* IOC */
+#define SPI_BUSNO	0
+
+static int __init rbtx4938_ethaddr_init(void)
+{
+#ifdef CONFIG_PCI
+	unsigned char dat[17];
+	unsigned char sum;
+	int i;
+
+	/* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
+	if (spi_eeprom_read(SPI_BUSNO, SEEPROM1_CS, 0, dat, sizeof(dat))) {
+		printk(KERN_ERR "seeprom: read error.\n");
+		return -ENODEV;
+	} else {
+		if (strcmp(dat, "MAC") != 0)
+			printk(KERN_WARNING "seeprom: bad signature.\n");
+		for (i = 0, sum = 0; i < sizeof(dat); i++)
+			sum += dat[i];
+		if (sum)
+			printk(KERN_WARNING "seeprom: bad checksum.\n");
+	}
+	tx4938_ethaddr_init(&dat[4], &dat[4 + 6]);
+#endif /* CONFIG_PCI */
+	return 0;
+}
+
+static void __init rbtx4938_spi_setup(void)
+{
+	/* set SPI_SEL */
+	txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_SPI_SEL);
+}
+
+static struct resource rbtx4938_fpga_resource;
+
+static void __init rbtx4938_time_init(void)
+{
+	tx4938_time_init(0);
+}
+
+static void __init rbtx4938_mem_setup(void)
+{
+	unsigned long long pcfg;
+
+	if (txx9_master_clock == 0)
+		txx9_master_clock = 25000000; /* 25MHz */
+
+	tx4938_setup();
+
+#ifdef CONFIG_PCI
+	txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
+	txx9_board_pcibios_setup = tx4927_pcibios_setup;
+#else
+	set_io_port_base(RBTX4938_ETHER_BASE);
+#endif
+
+	tx4938_sio_init(7372800, 0);
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61
+	pr_info("PIOSEL: disabling both ATA and NAND selection\n");
+	txx9_clear64(&tx4938_ccfgptr->pcfg,
+		     TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND
+	pr_info("PIOSEL: enabling NAND selection\n");
+	txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+	txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_ATA
+	pr_info("PIOSEL: enabling ATA selection\n");
+	txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+	txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_KEEP
+	pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg);
+	pr_info("PIOSEL: NAND %s, ATA %s\n",
+		(pcfg & TX4938_PCFG_NDF_SEL) ? "enabled" : "disabled",
+		(pcfg & TX4938_PCFG_ATA_SEL) ? "enabled" : "disabled");
+#endif
+
+	rbtx4938_spi_setup();
+	pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg);	/* updated */
+	/* fixup piosel */
+	if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+	    TX4938_PCFG_ATA_SEL)
+		writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x04,
+		       rbtx4938_piosel_addr);
+	else if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+		 TX4938_PCFG_NDF_SEL)
+		writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x08,
+		       rbtx4938_piosel_addr);
+	else
+		writeb(readb(rbtx4938_piosel_addr) & ~(0x08 | 0x04),
+		       rbtx4938_piosel_addr);
+
+	rbtx4938_fpga_resource.name = "FPGA Registers";
+	rbtx4938_fpga_resource.start = CPHYSADDR(RBTX4938_FPGA_REG_ADDR);
+	rbtx4938_fpga_resource.end = CPHYSADDR(RBTX4938_FPGA_REG_ADDR) + 0xffff;
+	rbtx4938_fpga_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	if (request_resource(&txx9_ce_res[2], &rbtx4938_fpga_resource))
+		printk(KERN_ERR "request resource for fpga failed\n");
+
+	_machine_restart = rbtx4938_machine_restart;
+
+	writeb(0xff, rbtx4938_led_addr);
+	printk(KERN_INFO "RBTX4938 --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
+	       readb(rbtx4938_fpga_rev_addr),
+	       readb(rbtx4938_dipsw_addr), readb(rbtx4938_bdipsw_addr));
+}
+
+static void __init rbtx4938_ne_init(void)
+{
+	struct resource res[] = {
+		{
+			.start	= RBTX4938_RTL_8019_BASE,
+			.end	= RBTX4938_RTL_8019_BASE + 0x20 - 1,
+			.flags	= IORESOURCE_IO,
+		}, {
+			.start	= RBTX4938_RTL_8019_IRQ,
+			.flags	= IORESOURCE_IRQ,
+		}
+	};
+	platform_device_register_simple("ne", -1, res, ARRAY_SIZE(res));
+}
+
+static DEFINE_SPINLOCK(rbtx4938_spi_gpio_lock);
+
+static void rbtx4938_spi_gpio_set(struct gpio_chip *chip, unsigned int offset,
+				  int value)
+{
+	u8 val;
+	unsigned long flags;
+	spin_lock_irqsave(&rbtx4938_spi_gpio_lock, flags);
+	val = readb(rbtx4938_spics_addr);
+	if (value)
+		val |= 1 << offset;
+	else
+		val &= ~(1 << offset);
+	writeb(val, rbtx4938_spics_addr);
+	mmiowb();
+	spin_unlock_irqrestore(&rbtx4938_spi_gpio_lock, flags);
+}
+
+static int rbtx4938_spi_gpio_dir_out(struct gpio_chip *chip,
+				     unsigned int offset, int value)
+{
+	rbtx4938_spi_gpio_set(chip, offset, value);
+	return 0;
+}
+
+static struct gpio_chip rbtx4938_spi_gpio_chip = {
+	.set = rbtx4938_spi_gpio_set,
+	.direction_output = rbtx4938_spi_gpio_dir_out,
+	.label = "RBTX4938-SPICS",
+	.base = 16,
+	.ngpio = 3,
+};
+
+static int __init rbtx4938_spi_init(void)
+{
+	struct spi_board_info srtc_info = {
+		.modalias = "rtc-rs5c348",
+		.max_speed_hz = 1000000, /* 1.0Mbps @ Vdd 2.0V */
+		.bus_num = 0,
+		.chip_select = 16 + SRTC_CS,
+		/* Mode 1 (High-Active, Shift-Then-Sample), High Avtive CS  */
+		.mode = SPI_MODE_1 | SPI_CS_HIGH,
+	};
+	spi_register_board_info(&srtc_info, 1);
+	spi_eeprom_register(SPI_BUSNO, SEEPROM1_CS, 128);
+	spi_eeprom_register(SPI_BUSNO, 16 + SEEPROM2_CS, 128);
+	spi_eeprom_register(SPI_BUSNO, 16 + SEEPROM3_CS, 128);
+	gpio_request(16 + SRTC_CS, "rtc-rs5c348");
+	gpio_direction_output(16 + SRTC_CS, 0);
+	gpio_request(SEEPROM1_CS, "seeprom1");
+	gpio_direction_output(SEEPROM1_CS, 1);
+	gpio_request(16 + SEEPROM2_CS, "seeprom2");
+	gpio_direction_output(16 + SEEPROM2_CS, 1);
+	gpio_request(16 + SEEPROM3_CS, "seeprom3");
+	gpio_direction_output(16 + SEEPROM3_CS, 1);
+	tx4938_spi_init(SPI_BUSNO);
+	return 0;
+}
+
+static void __init rbtx4938_mtd_init(void)
+{
+	struct physmap_flash_data pdata = {
+		.width = 4,
+	};
+
+	switch (readb(rbtx4938_bdipsw_addr) & 7) {
+	case 0:
+		/* Boot */
+		txx9_physmap_flash_init(0, 0x1fc00000, 0x400000, &pdata);
+		/* System */
+		txx9_physmap_flash_init(1, 0x1e000000, 0x1000000, &pdata);
+		break;
+	case 1:
+		/* System */
+		txx9_physmap_flash_init(0, 0x1f000000, 0x1000000, &pdata);
+		/* Boot */
+		txx9_physmap_flash_init(1, 0x1ec00000, 0x400000, &pdata);
+		break;
+	case 2:
+		/* Ext */
+		txx9_physmap_flash_init(0, 0x1f000000, 0x1000000, &pdata);
+		/* System */
+		txx9_physmap_flash_init(1, 0x1e000000, 0x1000000, &pdata);
+		/* Boot */
+		txx9_physmap_flash_init(2, 0x1dc00000, 0x400000, &pdata);
+		break;
+	case 3:
+		/* Boot */
+		txx9_physmap_flash_init(1, 0x1bc00000, 0x400000, &pdata);
+		/* System */
+		txx9_physmap_flash_init(2, 0x1a000000, 0x1000000, &pdata);
+		break;
+	}
+}
+
+static void __init rbtx4938_arch_init(void)
+{
+	gpiochip_add(&rbtx4938_spi_gpio_chip);
+	rbtx4938_pci_setup();
+	rbtx4938_spi_init();
+}
+
+static void __init rbtx4938_device_init(void)
+{
+	rbtx4938_ethaddr_init();
+	rbtx4938_ne_init();
+	tx4938_wdt_init();
+	rbtx4938_mtd_init();
+	/* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
+	tx4938_ndfmc_init(10, 35);
+	tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1);
+	tx4938_dmac_init(0, 2);
+	tx4938_aclc_init();
+	platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
+	tx4938_sramc_init();
+	txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL);
+}
+
+struct txx9_board_vec rbtx4938_vec __initdata = {
+	.system = "Toshiba RBTX4938",
+	.prom_init = rbtx4938_prom_init,
+	.mem_setup = rbtx4938_mem_setup,
+	.irq_setup = rbtx4938_irq_setup,
+	.time_init = rbtx4938_time_init,
+	.device_init = rbtx4938_device_init,
+	.arch_init = rbtx4938_arch_init,
+#ifdef CONFIG_PCI
+	.pci_map_irq = rbtx4938_pci_map_irq,
+#endif
+};