diff options
Diffstat (limited to 'arch/mips/txx9/jmr3927')
| -rw-r--r-- | arch/mips/txx9/jmr3927/Makefile | 8 | ||||
| -rw-r--r-- | arch/mips/txx9/jmr3927/init.c | 57 | ||||
| -rw-r--r-- | arch/mips/txx9/jmr3927/irq.c | 174 | ||||
| -rw-r--r-- | arch/mips/txx9/jmr3927/kgdb_io.c | 105 | ||||
| -rw-r--r-- | arch/mips/txx9/jmr3927/prom.c | 98 | ||||
| -rw-r--r-- | arch/mips/txx9/jmr3927/setup.c | 445 |
6 files changed, 887 insertions, 0 deletions
diff --git a/arch/mips/txx9/jmr3927/Makefile b/arch/mips/txx9/jmr3927/Makefile new file mode 100644 index 000000000000..5f83ea375225 --- /dev/null +++ b/arch/mips/txx9/jmr3927/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for TOSHIBA JMR-TX3927 board +# + +obj-y += prom.o init.o irq.o setup.o +obj-$(CONFIG_KGDB) += kgdb_io.o + +EXTRA_CFLAGS += -Werror diff --git a/arch/mips/txx9/jmr3927/init.c b/arch/mips/txx9/jmr3927/init.c new file mode 100644 index 000000000000..1bbb5343baf4 --- /dev/null +++ b/arch/mips/txx9/jmr3927/init.c @@ -0,0 +1,57 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * arch/mips/jmr3927/common/init.c + * + * Copyright (C) 2000-2001 Toshiba Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/init.h> +#include <asm/bootinfo.h> +#include <asm/txx9/jmr3927.h> + +extern void __init prom_init_cmdline(void); + +const char *get_system_type(void) +{ + return "Toshiba" +#ifdef CONFIG_TOSHIBA_JMR3927 + " JMR_TX3927" +#endif + ; +} + +extern void puts(const char *cp); + +void __init prom_init(void) +{ +#ifdef CONFIG_TOSHIBA_JMR3927 + /* CCFG */ + if ((tx3927_ccfgptr->ccfg & TX3927_CCFG_TLBOFF) == 0) + puts("Warning: TX3927 TLB off\n"); +#endif + + prom_init_cmdline(); + add_memory_region(0, JMR3927_SDRAM_SIZE, BOOT_MEM_RAM); +} diff --git a/arch/mips/txx9/jmr3927/irq.c b/arch/mips/txx9/jmr3927/irq.c new file mode 100644 index 000000000000..85e1daf15c7b --- /dev/null +++ b/arch/mips/txx9/jmr3927/irq.c @@ -0,0 +1,174 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * 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. + * + * Copyright (C) 2000-2001 Toshiba Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/interrupt.h> + +#include <asm/io.h> +#include <asm/mipsregs.h> +#include <asm/system.h> + +#include <asm/processor.h> +#include <asm/txx9/jmr3927.h> + +#if JMR3927_IRQ_END > NR_IRQS +#error JMR3927_IRQ_END > NR_IRQS +#endif + +static unsigned char irc_level[TX3927_NUM_IR] = { + 5, 5, 5, 5, 5, 5, /* INT[5:0] */ + 7, 7, /* SIO */ + 5, 5, 5, 0, 0, /* DMA, PIO, PCI */ + 6, 6, 6 /* TMR */ +}; + +/* + * CP0_STATUS is a thread's resource (saved/restored on context switch). + * So disable_irq/enable_irq MUST handle IOC/IRC registers. + */ +static void mask_irq_ioc(unsigned int irq) +{ + /* 0: mask */ + unsigned int irq_nr = irq - JMR3927_IRQ_IOC; + unsigned char imask = jmr3927_ioc_reg_in(JMR3927_IOC_INTM_ADDR); + unsigned int bit = 1 << irq_nr; + jmr3927_ioc_reg_out(imask & ~bit, JMR3927_IOC_INTM_ADDR); + /* flush write buffer */ + (void)jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR); +} +static void unmask_irq_ioc(unsigned int irq) +{ + /* 0: mask */ + unsigned int irq_nr = irq - JMR3927_IRQ_IOC; + unsigned char imask = jmr3927_ioc_reg_in(JMR3927_IOC_INTM_ADDR); + unsigned int bit = 1 << irq_nr; + jmr3927_ioc_reg_out(imask | bit, JMR3927_IOC_INTM_ADDR); + /* flush write buffer */ + (void)jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR); +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned long cp0_cause = read_c0_cause(); + int irq; + + if ((cp0_cause & CAUSEF_IP7) == 0) + return; + irq = (cp0_cause >> CAUSEB_IP2) & 0x0f; + + do_IRQ(irq + JMR3927_IRQ_IRC); +} + +static irqreturn_t jmr3927_ioc_interrupt(int irq, void *dev_id) +{ + unsigned char istat = jmr3927_ioc_reg_in(JMR3927_IOC_INTS2_ADDR); + int i; + + for (i = 0; i < JMR3927_NR_IRQ_IOC; i++) { + if (istat & (1 << i)) { + irq = JMR3927_IRQ_IOC + i; + do_IRQ(irq); + } + } + return IRQ_HANDLED; +} + +static struct irqaction ioc_action = { + .handler = jmr3927_ioc_interrupt, + .mask = CPU_MASK_NONE, + .name = "IOC", +}; + +static irqreturn_t jmr3927_pcierr_interrupt(int irq, void *dev_id) +{ + printk(KERN_WARNING "PCI error interrupt (irq 0x%x).\n", irq); + printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n", + tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat); + + return IRQ_HANDLED; +} +static struct irqaction pcierr_action = { + .handler = jmr3927_pcierr_interrupt, + .mask = CPU_MASK_NONE, + .name = "PCI error", +}; + +static void __init jmr3927_irq_init(void); + +void __init arch_init_irq(void) +{ + /* Now, interrupt control disabled, */ + /* all IRC interrupts are masked, */ + /* all IRC interrupt mode are Low Active. */ + + /* mask all IOC interrupts */ + jmr3927_ioc_reg_out(0, JMR3927_IOC_INTM_ADDR); + /* setup IOC interrupt mode (SOFT:High Active, Others:Low Active) */ + jmr3927_ioc_reg_out(JMR3927_IOC_INTF_SOFT, JMR3927_IOC_INTP_ADDR); + + /* clear PCI Soft interrupts */ + jmr3927_ioc_reg_out(0, JMR3927_IOC_INTS1_ADDR); + /* clear PCI Reset interrupts */ + jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); + + jmr3927_irq_init(); + + /* setup IOC interrupt 1 (PCI, MODEM) */ + setup_irq(JMR3927_IRQ_IOCINT, &ioc_action); + +#ifdef CONFIG_PCI + setup_irq(JMR3927_IRQ_IRC_PCI, &pcierr_action); +#endif + + /* enable all CPU interrupt bits. */ + set_c0_status(ST0_IM); /* IE bit is still 0. */ +} + +static struct irq_chip jmr3927_irq_ioc = { + .name = "jmr3927_ioc", + .ack = mask_irq_ioc, + .mask = mask_irq_ioc, + .mask_ack = mask_irq_ioc, + .unmask = unmask_irq_ioc, +}; + +static void __init jmr3927_irq_init(void) +{ + u32 i; + + txx9_irq_init(TX3927_IRC_REG); + for (i = 0; i < TXx9_MAX_IR; i++) + txx9_irq_set_pri(i, irc_level[i]); + for (i = JMR3927_IRQ_IOC; i < JMR3927_IRQ_IOC + JMR3927_NR_IRQ_IOC; i++) + set_irq_chip_and_handler(i, &jmr3927_irq_ioc, handle_level_irq); +} diff --git a/arch/mips/txx9/jmr3927/kgdb_io.c b/arch/mips/txx9/jmr3927/kgdb_io.c new file mode 100644 index 000000000000..5bd757e56f79 --- /dev/null +++ b/arch/mips/txx9/jmr3927/kgdb_io.c @@ -0,0 +1,105 @@ +/* + * BRIEF MODULE DESCRIPTION + * Low level uart routines to directly access a TX[34]927 SIO. + * + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com or source@mvista.com + * + * Based on arch/mips/ddb5xxx/ddb5477/kgdb_io.c + * + * Copyright (C) 2000-2001 Toshiba Corporation + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <asm/txx9/jmr3927.h> + +#define TIMEOUT 0xffffff + +static int remoteDebugInitialized = 0; +static void debugInit(int baud); + +int putDebugChar(unsigned char c) +{ + int i = 0; + + if (!remoteDebugInitialized) { + remoteDebugInitialized = 1; + debugInit(38400); + } + + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (!(tx3927_sioptr(0)->cisr & TXx927_SICISR_TXALS)); + tx3927_sioptr(0)->tfifo = c; + + return 1; +} + +unsigned char getDebugChar(void) +{ + int i = 0; + int dicr; + char c; + + if (!remoteDebugInitialized) { + remoteDebugInitialized = 1; + debugInit(38400); + } + + /* diable RX int. */ + dicr = tx3927_sioptr(0)->dicr; + tx3927_sioptr(0)->dicr = 0; + + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (tx3927_sioptr(0)->disr & TXx927_SIDISR_UVALID) + ; + c = tx3927_sioptr(0)->rfifo; + + /* clear RX int. status */ + tx3927_sioptr(0)->disr &= ~TXx927_SIDISR_RDIS; + /* enable RX int. */ + tx3927_sioptr(0)->dicr = dicr; + + return c; +} + +static void debugInit(int baud) +{ + tx3927_sioptr(0)->lcr = 0x020; + tx3927_sioptr(0)->dicr = 0; + tx3927_sioptr(0)->disr = 0x4100; + tx3927_sioptr(0)->cisr = 0x014; + tx3927_sioptr(0)->fcr = 0; + tx3927_sioptr(0)->flcr = 0x02; + tx3927_sioptr(0)->bgr = ((JMR3927_BASE_BAUD + baud / 2) / baud) | + TXx927_SIBGR_BCLK_T0; +} diff --git a/arch/mips/txx9/jmr3927/prom.c b/arch/mips/txx9/jmr3927/prom.c new file mode 100644 index 000000000000..8bc1049b622e --- /dev/null +++ b/arch/mips/txx9/jmr3927/prom.c @@ -0,0 +1,98 @@ +/* + * BRIEF MODULE DESCRIPTION + * PROM library initialisation code, assuming a version of + * pmon is the boot code. + * + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * Based on arch/mips/au1000/common/prom.c + * + * This file was derived from Carsten Langgaard's + * arch/mips/mips-boards/xx files. + * + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> +#include <asm/txx9/tx3927.h> + +char * __init prom_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + +void __init prom_init_cmdline(void) +{ + char *cp; + int actr; + int prom_argc = fw_arg0; + char **prom_argv = (char **) fw_arg1; + + actr = 1; /* Always ignore argv[0] */ + + cp = &(arcs_cmdline[0]); + while(actr < prom_argc) { + strcpy(cp, prom_argv[actr]); + cp += strlen(prom_argv[actr]); + *cp++ = ' '; + actr++; + } + if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ + --cp; + *cp = '\0'; +} + +void __init prom_free_prom_memory(void) +{ +} + +#define TIMEOUT 0xffffff + +void +prom_putchar(char c) +{ + int i = 0; + + do { + i++; + if (i>TIMEOUT) + break; + } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS)); + tx3927_sioptr(1)->tfifo = c; + return; +} + +void +puts(const char *cp) +{ + while (*cp) + prom_putchar(*cp++); + prom_putchar('\r'); + prom_putchar('\n'); +} diff --git a/arch/mips/txx9/jmr3927/setup.c b/arch/mips/txx9/jmr3927/setup.c new file mode 100644 index 000000000000..41e0f3b3af2c --- /dev/null +++ b/arch/mips/txx9/jmr3927/setup.c @@ -0,0 +1,445 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * Copyright (C) 2000-2001 Toshiba Corporation + * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org) + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/gpio.h> +#ifdef CONFIG_SERIAL_TXX9 +#include <linux/serial_core.h> +#endif + +#include <asm/txx9tmr.h> +#include <asm/txx9pio.h> +#include <asm/reboot.h> +#include <asm/txx9/jmr3927.h> +#include <asm/mipsregs.h> + +extern void puts(const char *cp); + +/* don't enable - see errata */ +static int jmr3927_ccfg_toeon; + +static inline void do_reset(void) +{ +#if 1 /* Resetting PCI bus */ + jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); + jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR); + (void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */ + mdelay(1); + jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); +#endif + jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR); +} + +static void jmr3927_machine_restart(char *command) +{ + local_irq_disable(); + puts("Rebooting..."); + do_reset(); +} + +static void jmr3927_machine_halt(void) +{ + puts("JMR-TX3927 halted.\n"); + while (1); +} + +static void jmr3927_machine_power_off(void) +{ + puts("JMR-TX3927 halted. Please turn off the power.\n"); + while (1); +} + +void __init plat_time_init(void) +{ + txx9_clockevent_init(TX3927_TMR_REG(0), + TXX9_IRQ_BASE + JMR3927_IRQ_IRC_TMR(0), + JMR3927_IMCLK); + txx9_clocksource_init(TX3927_TMR_REG(1), JMR3927_IMCLK); +} + +#define DO_WRITE_THROUGH +#define DO_ENABLE_CACHE + +extern char * __init prom_getcmdline(void); +static void jmr3927_board_init(void); +extern struct resource pci_io_resource; +extern struct resource pci_mem_resource; + +void __init plat_mem_setup(void) +{ + char *argptr; + + set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO); + + _machine_restart = jmr3927_machine_restart; + _machine_halt = jmr3927_machine_halt; + pm_power_off = jmr3927_machine_power_off; + + /* + * IO/MEM resources. + */ + ioport_resource.start = pci_io_resource.start; + ioport_resource.end = pci_io_resource.end; + iomem_resource.start = 0; + iomem_resource.end = 0xffffffff; + + /* Reboot on panic */ + panic_timeout = 180; + + /* cache setup */ + { + unsigned int conf; +#ifdef DO_ENABLE_CACHE + int mips_ic_disable = 0, mips_dc_disable = 0; +#else + int mips_ic_disable = 1, mips_dc_disable = 1; +#endif +#ifdef DO_WRITE_THROUGH + int mips_config_cwfon = 0; + int mips_config_wbon = 0; +#else + int mips_config_cwfon = 1; + int mips_config_wbon = 1; +#endif + + conf = read_c0_conf(); + conf &= ~(TX39_CONF_ICE | TX39_CONF_DCE | TX39_CONF_WBON | TX39_CONF_CWFON); + conf |= mips_ic_disable ? 0 : TX39_CONF_ICE; + conf |= mips_dc_disable ? 0 : TX39_CONF_DCE; + conf |= mips_config_wbon ? TX39_CONF_WBON : 0; + conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0; + + write_c0_conf(conf); + write_c0_cache(0); + } + + /* initialize board */ + jmr3927_board_init(); + + argptr = prom_getcmdline(); + + if ((argptr = strstr(argptr, "toeon")) != NULL) + jmr3927_ccfg_toeon = 1; + argptr = prom_getcmdline(); + if ((argptr = strstr(argptr, "ip=")) == NULL) { + argptr = prom_getcmdline(); + strcat(argptr, " ip=bootp"); + } + +#ifdef CONFIG_SERIAL_TXX9 + { + extern int early_serial_txx9_setup(struct uart_port *port); + int i; + struct uart_port req; + for(i = 0; i < 2; i++) { + memset(&req, 0, sizeof(req)); + req.line = i; + req.iotype = UPIO_MEM; + req.membase = (unsigned char __iomem *)TX3927_SIO_REG(i); + req.mapbase = TX3927_SIO_REG(i); + req.irq = i == 0 ? + JMR3927_IRQ_IRC_SIO0 : JMR3927_IRQ_IRC_SIO1; + if (i == 0) + req.flags |= UPF_BUGGY_UART /*HAVE_CTS_LINE*/; + req.uartclk = JMR3927_IMCLK; + early_serial_txx9_setup(&req); + } + } +#ifdef CONFIG_SERIAL_TXX9_CONSOLE + argptr = prom_getcmdline(); + if ((argptr = strstr(argptr, "console=")) == NULL) { + argptr = prom_getcmdline(); + strcat(argptr, " console=ttyS1,115200"); + } +#endif +#endif +} + +static void tx3927_setup(void); + +static void __init jmr3927_board_init(void) +{ + tx3927_setup(); + + /* SIO0 DTR on */ + jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR); + + jmr3927_led_set(0); + + printk("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n", + jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK, + jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK, + jmr3927_dipsw1(), jmr3927_dipsw2(), + jmr3927_dipsw3(), jmr3927_dipsw4()); +} + +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"); + } +} + +/* This trick makes rtc-ds1742 driver usable as is. */ +unsigned long __swizzle_addr_b(unsigned long port) +{ + if ((port & 0xffff0000) != JMR3927_IOC_NVRAMB_ADDR) + return port; + port = (port & 0xffff0000) | (port & 0x7fff << 1); +#ifdef __BIG_ENDIAN + return port; +#else + return port | 1; +#endif +} +EXPORT_SYMBOL(__swizzle_addr_b); + +static int __init jmr3927_rtc_init(void) +{ + static struct resource __initdata res = { + .start = JMR3927_IOC_NVRAMB_ADDR - IO_BASE, + .end = JMR3927_IOC_NVRAMB_ADDR - IO_BASE + 0x800 - 1, + .flags = IORESOURCE_MEM, + }; + struct platform_device *dev; + dev = platform_device_register_simple("rtc-ds1742", -1, &res, 1); + return IS_ERR(dev) ? PTR_ERR(dev) : 0; +} +device_initcall(jmr3927_rtc_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 jmr3927_wdt_init(void) +{ + return txx9_wdt_init(TX3927_TMR_REG(2)); +} +device_initcall(jmr3927_wdt_init); + +/* Minimum CLK support */ + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "imbus_clk")) + return (struct clk *)JMR3927_IMCLK; + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return (unsigned long)clk; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); |