/* * Toshiba rbtx4927 specific setup * * Author: MontaVista Software, Inc. * source@mvista.com * * Copyright 2001-2002 MontaVista Software Inc. * * Copyright (C) 1996, 97, 2001, 04 Ralf Baechle (ralf@linux-mips.org) * Copyright (C) 2000 RidgeRun, Inc. * Author: RidgeRun, Inc. * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com * * Copyright 2001 MontaVista Software Inc. * Author: jsun@mvista.com or jsun@junsun.net * * Copyright 2002 MontaVista Software Inc. * Author: Michael Pruznick, michael_pruznick@mvista.com * * Copyright (C) 2000-2001 Toshiba Corporation * * Copyright (C) 2004 MontaVista Software Inc. * Author: Manish Lachwani, mlachwani@mvista.com * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for TX4937 */ #ifdef CONFIG_PCI static void __init tx4927_pci_setup(void) { int extarb = !(__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB); struct pci_controller *c = &txx9_primary_pcic; register_pci_controller(c); if (__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCI66) txx9_pci_option = (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) | TXX9_PCI_OPT_CLK_66; /* already configured */ /* Reset PCI Bus */ writeb(1, rbtx4927_pcireset_addr); /* Reset PCIC */ txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) == TXX9_PCI_OPT_CLK_66) tx4927_pciclk66_setup(); mdelay(10); /* clear PCIC reset */ txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); writeb(0, rbtx4927_pcireset_addr); iob(); tx4927_report_pciclk(); tx4927_pcic_setup(tx4927_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(1, rbtx4927_pcireset_addr); /* Reset PCIC */ txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); tx4927_pciclk66_setup(); mdelay(10); /* clear PCIC reset */ txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST); writeb(0, rbtx4927_pcireset_addr); iob(); /* Reinitialize PCIC */ tx4927_report_pciclk(); tx4927_pcic_setup(tx4927_pcicptr, c, extarb); } } static void __init tx4937_pci_setup(void) { 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(1, rbtx4927_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(0, rbtx4927_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(1, rbtx4927_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(0, rbtx4927_pcireset_addr); iob(); /* Reinitialize PCIC */ tx4938_report_pciclk(); tx4927_pcic_setup(tx4938_pcicptr, c, extarb); } } static void __init rbtx4927_arch_init(void) { tx4927_pci_setup(); } static void __init rbtx4937_arch_init(void) { tx4937_pci_setup(); } #else #define rbtx4927_arch_init NULL #define rbtx4937_arch_init NULL #endif /* CONFIG_PCI */ static void __noreturn wait_forever(void) { while (1) if (cpu_wait) (*cpu_wait)(); } static void toshiba_rbtx4927_restart(char *command) { printk(KERN_NOTICE "System Rebooting...\n"); /* enable the s/w reset register */ writeb(1, rbtx4927_softresetlock_addr); /* wait for enable to be seen */ while (!(readb(rbtx4927_softresetlock_addr) & 1)) ; /* do a s/w reset */ writeb(1, rbtx4927_softreset_addr); /* do something passive while waiting for reset */ local_irq_disable(); wait_forever(); /* no return */ } static void toshiba_rbtx4927_halt(void) { printk(KERN_NOTICE "System Halted\n"); local_irq_disable(); wait_forever(); /* no return */ } static void toshiba_rbtx4927_power_off(void) { toshiba_rbtx4927_halt(); /* no return */ } static void __init rbtx4927_clock_init(void); static void __init rbtx4937_clock_init(void); static void __init rbtx4927_mem_setup(void) { u32 cp0_config; char *argptr; /* f/w leaves this on at startup */ clear_c0_status(ST0_ERL); /* enable caches -- HCP5 does this, pmon does not */ cp0_config = read_c0_config(); cp0_config = cp0_config & ~(TX49_CONF_IC | TX49_CONF_DC); write_c0_config(cp0_config); if (TX4927_REV_PCODE() == 0x4927) { rbtx4927_clock_init(); tx4927_setup(); } else { rbtx4937_clock_init(); tx4938_setup(); } _machine_restart = toshiba_rbtx4927_restart; _machine_halt = toshiba_rbtx4927_halt; pm_power_off = toshiba_rbtx4927_power_off; #ifdef CONFIG_PCI txx9_alloc_pci_controller(&txx9_primary_pcic, RBTX4927_PCIMEM, RBTX4927_PCIMEM_SIZE, RBTX4927_PCIIO, RBTX4927_PCIIO_SIZE); txx9_board_pcibios_setup = tx4927_pcibios_setup; #else set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET); #endif tx4927_setup_serial(); #ifdef CONFIG_SERIAL_TXX9_CONSOLE argptr = prom_getcmdline(); if (strstr(argptr, "console=") == NULL) { strcat(argptr, " console=ttyS0,38400"); } #endif #ifdef CONFIG_ROOT_NFS argptr = prom_getcmdline(); if (strstr(argptr, "root=") == NULL) { strcat(argptr, " root=/dev/nfs rw"); } #endif #ifdef CONFIG_IP_PNP argptr = prom_getcmdline(); if (strstr(argptr, "ip=") == NULL) { strcat(argptr, " ip=any"); } #endif } static void __init rbtx4927_clock_init(void) { /* * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz. * * For TX4927: * PCIDIVMODE[12:11]'s initial value is given by S9[4:3] (ON:0, OFF:1). * CPU 166MHz: PCI 66MHz : PCIDIVMODE: 00 (1/2.5) * CPU 200MHz: PCI 66MHz : PCIDIVMODE: 01 (1/3) * CPU 166MHz: PCI 33MHz : PCIDIVMODE: 10 (1/5) * CPU 200MHz: PCI 33MHz : PCIDIVMODE: 11 (1/6) * i.e. S9[3]: ON (83MHz), OFF (100MHz) */ switch ((unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIDIVMODE_MASK) { case TX4927_CCFG_PCIDIVMODE_2_5: case TX4927_CCFG_PCIDIVMODE_5: txx9_cpu_clock = 166666666; /* 166MHz */ break; default: txx9_cpu_clock = 200000000; /* 200MHz */ } } static void __init rbtx4937_clock_init(void) { /* * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz. * * For TX4937: * PCIDIVMODE[12:11]'s initial value is given by S1[5:4] (ON:0, OFF:1) * PCIDIVMODE[10] is 0. * CPU 266MHz: PCI 33MHz : PCIDIVMODE: 000 (1/8) * CPU 266MHz: PCI 66MHz : PCIDIVMODE: 001 (1/4) * CPU 300MHz: PCI 33MHz : PCIDIVMODE: 010 (1/9) * CPU 300MHz: PCI 66MHz : PCIDIVMODE: 011 (1/4.5) * CPU 333MHz: PCI 33MHz : PCIDIVMODE: 100 (1/10) * CPU 333MHz: PCI 66MHz : PCIDIVMODE: 101 (1/5) */ switch ((unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIDIVMODE_MASK) { case TX4938_CCFG_PCIDIVMODE_8: case TX4938_CCFG_PCIDIVMODE_4: txx9_cpu_clock = 266666666; /* 266MHz */ break; case TX4938_CCFG_PCIDIVMODE_9: case TX4938_CCFG_PCIDIVMODE_4_5: txx9_cpu_clock = 300000000; /* 300MHz */ break; default: txx9_cpu_clock = 333333333; /* 333MHz */ } } static void __init rbtx4927_time_init(void) { tx4927_time_init(0); } static int __init toshiba_rbtx4927_rtc_init(void) { struct resource res = { .start = RBTX4927_BRAMRTC_BASE - IO_BASE, .end = RBTX4927_BRAMRTC_BASE - IO_BASE + 0x800 - 1, .flags = IORESOURCE_MEM, }; struct platform_device *dev = platform_device_register_simple("rtc-ds1742", -1, &res, 1); return IS_ERR(dev) ? PTR_ERR(dev) : 0; } static int __init rbtx4927_ne_init(void) { struct resource res[] = { { .start = RBTX4927_RTL_8019_BASE, .end = RBTX4927_RTL_8019_BASE + 0x20 - 1, .flags = IORESOURCE_IO, }, { .start = RBTX4927_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; } /* 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 rbtx4927_wdt_init(void) { return txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL); } static void __init rbtx4927_device_init(void) { toshiba_rbtx4927_rtc_init(); rbtx4927_ne_init(); rbtx4927_wdt_init(); } struct txx9_board_vec rbtx4927_vec __initdata = { .system = "Toshiba RBTX4927", .prom_init = rbtx4927_prom_init, .mem_setup = rbtx4927_mem_setup, .irq_setup = rbtx4927_irq_setup, .time_init = rbtx4927_time_init, .device_init = rbtx4927_device_init, .arch_init = rbtx4927_arch_init, #ifdef CONFIG_PCI .pci_map_irq = rbtx4927_pci_map_irq, #endif }; struct txx9_board_vec rbtx4937_vec __initdata = { .system = "Toshiba RBTX4937", .prom_init = rbtx4927_prom_init, .mem_setup = rbtx4927_mem_setup, .irq_setup = rbtx4927_irq_setup, .time_init = rbtx4927_time_init, .device_init = rbtx4927_device_init, .arch_init = rbtx4937_arch_init, #ifdef CONFIG_PCI .pci_map_irq = rbtx4927_pci_map_irq, #endif };