1/* 2 * Copyright 2000-2003, 2008 MontaVista Software Inc. 3 * Author: MontaVista Software, Inc. <source@mvista.com> 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2 of the License, or (at your 8 * option) any later version. 9 * 10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 11 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 13 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 16 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 17 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 20 * 21 * You should have received a copy of the GNU General Public License along 22 * with this program; if not, write to the Free Software Foundation, Inc., 23 * 675 Mass Ave, Cambridge, MA 02139, USA. 24 */ 25 26#include <linux/gpio.h> 27#include <linux/init.h> 28#include <linux/interrupt.h> 29#include <linux/delay.h> 30#include <linux/pm.h> 31 32#include <asm/reboot.h> 33#include <asm/mach-au1x00/au1000.h> 34 35#include <prom.h> 36 37static void xxs1500_reset(char *c) 38{ 39 /* Jump to the reset vector */ 40 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); 41} 42 43static void xxs1500_power_off(void) 44{ 45 while (1) 46 asm volatile ( 47 " .set mips32 \n" 48 " wait \n" 49 " .set mips0 \n"); 50} 51 52void __init board_setup(void) 53{ 54 u32 pin_func; 55 56 pm_power_off = xxs1500_power_off; 57 _machine_halt = xxs1500_power_off; 58 _machine_restart = xxs1500_reset; 59 60 alchemy_gpio1_input_enable(); 61 alchemy_gpio2_enable(); 62 63 /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */ 64 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3; 65 pin_func |= SYS_PF_UR3; 66 au_writel(pin_func, SYS_PINFUNC); 67 68 /* Enable UART */ 69 au_writel(0x01, UART3_ADDR + UART_MOD_CNTRL); /* clock enable (CE) */ 70 mdelay(10); 71 au_writel(0x03, UART3_ADDR + UART_MOD_CNTRL); /* CE and "enable" */ 72 mdelay(10); 73 74 /* Enable DTR = USB power up */ 75 au_writel(0x01, UART3_ADDR + UART_MCR); /* UART_MCR_DTR is 0x01??? */ 76 77#ifdef CONFIG_PCI 78#if defined(__MIPSEB__) 79 au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG); 80#else 81 au_writel(0xf, Au1500_PCI_CFG); 82#endif 83#endif 84} 85 86static int __init xxs1500_init_irq(void) 87{ 88 set_irq_type(AU1500_GPIO204_INT, IRQF_TRIGGER_HIGH); 89 set_irq_type(AU1500_GPIO201_INT, IRQF_TRIGGER_LOW); 90 set_irq_type(AU1500_GPIO202_INT, IRQF_TRIGGER_LOW); 91 set_irq_type(AU1500_GPIO203_INT, IRQF_TRIGGER_LOW); 92 set_irq_type(AU1500_GPIO205_INT, IRQF_TRIGGER_LOW); 93 set_irq_type(AU1500_GPIO207_INT, IRQF_TRIGGER_LOW); 94 95 set_irq_type(AU1500_GPIO0_INT, IRQF_TRIGGER_LOW); 96 set_irq_type(AU1500_GPIO1_INT, IRQF_TRIGGER_LOW); 97 set_irq_type(AU1500_GPIO2_INT, IRQF_TRIGGER_LOW); 98 set_irq_type(AU1500_GPIO3_INT, IRQF_TRIGGER_LOW); 99 set_irq_type(AU1500_GPIO4_INT, IRQF_TRIGGER_LOW); /* CF irq */ 100 set_irq_type(AU1500_GPIO5_INT, IRQF_TRIGGER_LOW); 101 102 return 0; 103} 104arch_initcall(xxs1500_init_irq); 105