1/* 2 * This program is free software; you can redistribute it and/or modify it 3 * under the terms of the GNU General Public License as published by the 4 * Free Software Foundation; either version 2 of the License, or (at your 5 * option) any later version. 6 * 7 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 8 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 9 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 10 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 11 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 12 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 13 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 14 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 15 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 16 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, write to the Free Software Foundation, Inc., 20 * 675 Mass Ave, Cambridge, MA 02139, USA. 21 * 22 * Copyright 2001 MontaVista Software Inc. 23 * Author: MontaVista Software, Inc. 24 * ahennessy@mvista.com 25 * 26 * Copyright (C) 2000-2001 Toshiba Corporation 27 * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org) 28 */ 29 30#include <linux/init.h> 31#include <linux/kernel.h> 32#include <linux/types.h> 33#include <linux/ioport.h> 34#include <linux/delay.h> 35#include <linux/platform_device.h> 36#include <linux/gpio.h> 37#include <asm/reboot.h> 38#include <asm/txx9pio.h> 39#include <asm/txx9/generic.h> 40#include <asm/txx9/pci.h> 41#include <asm/txx9/jmr3927.h> 42#include <asm/mipsregs.h> 43 44static void jmr3927_machine_restart(char *command) 45{ 46 local_irq_disable(); 47#if 1 /* Resetting PCI bus */ 48 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); 49 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR); 50 (void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */ 51 mdelay(1); 52 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); 53#endif 54 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR); 55 /* fallback */ 56 (*_machine_halt)(); 57} 58 59static void __init jmr3927_time_init(void) 60{ 61 tx3927_time_init(0, 1); 62} 63 64#define DO_WRITE_THROUGH 65 66static void jmr3927_board_init(void); 67 68static void __init jmr3927_mem_setup(void) 69{ 70 set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO); 71 72 _machine_restart = jmr3927_machine_restart; 73 74 /* cache setup */ 75 { 76 unsigned int conf; 77#ifdef DO_WRITE_THROUGH 78 int mips_config_cwfon = 0; 79 int mips_config_wbon = 0; 80#else 81 int mips_config_cwfon = 1; 82 int mips_config_wbon = 1; 83#endif 84 85 conf = read_c0_conf(); 86 conf &= ~(TX39_CONF_WBON | TX39_CONF_CWFON); 87 conf |= mips_config_wbon ? TX39_CONF_WBON : 0; 88 conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0; 89 90 write_c0_conf(conf); 91 write_c0_cache(0); 92 } 93 94 /* initialize board */ 95 jmr3927_board_init(); 96 97 tx3927_sio_init(0, 1 << 1); /* ch1: noCTS */ 98} 99 100static void __init jmr3927_pci_setup(void) 101{ 102#ifdef CONFIG_PCI 103 int extarb = !(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB); 104 struct pci_controller *c; 105 106 c = txx9_alloc_pci_controller(&txx9_primary_pcic, 107 JMR3927_PCIMEM, JMR3927_PCIMEM_SIZE, 108 JMR3927_PCIIO, JMR3927_PCIIO_SIZE); 109 register_pci_controller(c); 110 if (!extarb) { 111 /* Reset PCI Bus */ 112 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); 113 udelay(100); 114 jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, 115 JMR3927_IOC_RESET_ADDR); 116 udelay(100); 117 jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR); 118 } 119 tx3927_pcic_setup(c, JMR3927_SDRAM_SIZE, extarb); 120 tx3927_setup_pcierr_irq(); 121#endif /* CONFIG_PCI */ 122} 123 124static void __init jmr3927_board_init(void) 125{ 126 txx9_cpu_clock = JMR3927_CORECLK; 127 /* SDRAMC are configured by PROM */ 128 129 /* ROMC */ 130 tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048; 131 tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8; 132 tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698; 133 tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218; 134 135 /* Pin selection */ 136 tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL; 137 tx3927_ccfgptr->pcfg |= 138 TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL | 139 (TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1)); 140 141 tx3927_setup(); 142 143 /* PIO[15:12] connected to LEDs */ 144 __raw_writel(0x0000f000, &tx3927_pioptr->dir); 145 146 jmr3927_pci_setup(); 147 148 /* SIO0 DTR on */ 149 jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR); 150 151 jmr3927_led_set(0); 152 153 pr_info("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n", 154 jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK, 155 jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK, 156 jmr3927_dipsw1(), jmr3927_dipsw2(), 157 jmr3927_dipsw3(), jmr3927_dipsw4()); 158} 159 160/* This trick makes rtc-ds1742 driver usable as is. */ 161static unsigned long jmr3927_swizzle_addr_b(unsigned long port) 162{ 163 if ((port & 0xffff0000) != JMR3927_IOC_NVRAMB_ADDR) 164 return port; 165 port = (port & 0xffff0000) | (port & 0x7fff << 1); 166#ifdef __BIG_ENDIAN 167 return port; 168#else 169 return port | 1; 170#endif 171} 172 173static void __init jmr3927_rtc_init(void) 174{ 175 static struct resource __initdata res = { 176 .start = JMR3927_IOC_NVRAMB_ADDR - IO_BASE, 177 .end = JMR3927_IOC_NVRAMB_ADDR - IO_BASE + 0x800 - 1, 178 .flags = IORESOURCE_MEM, 179 }; 180 platform_device_register_simple("rtc-ds1742", -1, &res, 1); 181} 182 183static void __init jmr3927_mtd_init(void) 184{ 185 int i; 186 187 for (i = 0; i < 2; i++) 188 tx3927_mtd_init(i); 189} 190 191static void __init jmr3927_device_init(void) 192{ 193 unsigned long iocled_base = JMR3927_IOC_LED_ADDR - IO_BASE; 194#ifdef __LITTLE_ENDIAN 195 iocled_base |= 1; 196#endif 197 __swizzle_addr_b = jmr3927_swizzle_addr_b; 198 jmr3927_rtc_init(); 199 tx3927_wdt_init(); 200 jmr3927_mtd_init(); 201 txx9_iocled_init(iocled_base, -1, 8, 1, "green", NULL); 202} 203 204static void __init jmr3927_arch_init(void) 205{ 206 txx9_gpio_init(TX3927_PIO_REG, 0, 16); 207 208 gpio_request(11, "dipsw1"); 209 gpio_request(10, "dipsw2"); 210} 211 212struct txx9_board_vec jmr3927_vec __initdata = { 213 .system = "Toshiba JMR_TX3927", 214 .prom_init = jmr3927_prom_init, 215 .mem_setup = jmr3927_mem_setup, 216 .irq_setup = jmr3927_irq_setup, 217 .time_init = jmr3927_time_init, 218 .device_init = jmr3927_device_init, 219 .arch_init = jmr3927_arch_init, 220#ifdef CONFIG_PCI 221 .pci_map_irq = jmr3927_pci_map_irq, 222#endif 223}; 224