diff options
Diffstat (limited to 'arch/mips/txx9/rbtx4938/setup.c')
| -rw-r--r-- | arch/mips/txx9/rbtx4938/setup.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c new file mode 100644 index 000000000000..6c2b99bb8af6 --- /dev/null +++ b/arch/mips/txx9/rbtx4938/setup.c @@ -0,0 +1,412 @@ +/* + * 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/interrupt.h> +#include <linux/console.h> +#include <linux/pm.h> +#include <linux/platform_device.h> +#include <linux/gpio.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_halt(void) +{ + printk(KERN_NOTICE "System Halted\n"); + local_irq_disable(); + + while (1) + __asm__(".set\tmips3\n\t" + "wait\n\t" + ".set\tmips0"); +} + +static void rbtx4938_machine_power_off(void) +{ + rbtx4938_machine_halt(); + /* no return */ +} + +static void rbtx4938_machine_restart(char *command) +{ + local_irq_disable(); + + printk("Rebooting..."); + writeb(1, rbtx4938_softresetlock_addr); + writeb(1, rbtx4938_sfvol_addr); + writeb(1, rbtx4938_softreset_addr); + while(1) + ; +} + +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); + } +#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 */ + +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(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"); + } + for (i = 0; i < 2; i++) { + unsigned int id = + TXX9_IRQ_BASE + (i ? TX4938_IR_ETH1 : TX4938_IR_ETH0); + struct platform_device *pdev; + if (!(__raw_readq(&tx4938_ccfgptr->pcfg) & + (i ? TX4938_PCFG_ETH1_SEL : TX4938_PCFG_ETH0_SEL))) + continue; + pdev = platform_device_alloc("tc35815-mac", id); + if (!pdev || + platform_device_add_data(pdev, &dat[4 + 6 * i], 6) || + platform_device_add(pdev)) + platform_device_put(pdev); + } +#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; + char *argptr; + + 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); +#else + set_io_port_base(RBTX4938_ETHER_BASE); +#endif + + tx4938_setup_serial(); +#ifdef CONFIG_SERIAL_TXX9_CONSOLE + argptr = prom_getcmdline(); + if (strstr(argptr, "console=") == NULL) { + strcat(argptr, " console=ttyS0,38400"); + } +#endif + +#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61 + printk("PIOSEL: disabling both ata and nand selection\n"); + local_irq_disable(); + txx9_clear64(&tx4938_ccfgptr->pcfg, + TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL); +#endif + +#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND + printk("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 + printk("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_IP_PNP + argptr = prom_getcmdline(); + if (strstr(argptr, "ip=") == NULL) { + strcat(argptr, " ip=any"); + } +#endif + + +#ifdef CONFIG_FB + { + conswitchp = &dummy_con; + } +#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("request resource for fpga failed\n"); + + _machine_restart = rbtx4938_machine_restart; + _machine_halt = rbtx4938_machine_halt; + pm_power_off = rbtx4938_machine_power_off; + + 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 int __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, + } + }; + struct platform_device *dev = + platform_device_register_simple("ne", -1, + res, ARRAY_SIZE(res)); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} + +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, +}; + +/* SPI support */ + +static void __init txx9_spi_init(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", 0, + res, ARRAY_SIZE(res)); +} + +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(SEEPROM1_CS); + spi_eeprom_register(16 + SEEPROM2_CS); + spi_eeprom_register(16 + SEEPROM3_CS); + 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); + txx9_spi_init(TX4938_SPI_REG & 0xfffffffffULL, RBTX4938_IRQ_IRC_SPI); + return 0; +} + +static void __init rbtx4938_arch_init(void) +{ + gpiochip_add(&rbtx4938_spi_gpio_chip); + rbtx4938_pci_setup(); + rbtx4938_spi_init(); +} + +/* Watchdog support */ + +static int __init txx9_wdt_init(unsigned long base) +{ + struct resource res = { + .start = base, + .end = base + 0x100 - 1, + .flags = IORESOURCE_MEM, + }; + struct platform_device *dev = + platform_device_register_simple("txx9wdt", -1, &res, 1); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} + +static int __init rbtx4938_wdt_init(void) +{ + return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL); +} + +static void __init rbtx4938_device_init(void) +{ + rbtx4938_ethaddr_init(); + rbtx4938_ne_init(); + rbtx4938_wdt_init(); +} + +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 +}; |