1 /* 2 * BRIEF MODULE DESCRIPTION 3 * MyCable XXS1500 board support 4 * 5 * Copyright 2003, 2008 MontaVista Software Inc. 6 * Author: MontaVista Software, Inc. <source@mvista.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 #include <linux/kernel.h> 24 #include <linux/init.h> 25 #include <linux/interrupt.h> 26 #include <linux/platform_device.h> 27 #include <linux/gpio.h> 28 #include <linux/delay.h> 29 #include <linux/pm.h> 30 #include <asm/bootinfo.h> 31 #include <asm/reboot.h> 32 #include <asm/setup.h> 33 #include <asm/mach-au1x00/au1000.h> 34 #include <prom.h> 35 36 const char *get_system_type(void) 37 { 38 return "XXS1500"; 39 } 40 41 void __init prom_init(void) 42 { 43 unsigned char *memsize_str; 44 unsigned long memsize; 45 46 prom_argc = fw_arg0; 47 prom_argv = (char **)fw_arg1; 48 prom_envp = (char **)fw_arg2; 49 50 prom_init_cmdline(); 51 52 memsize_str = prom_getenv("memsize"); 53 if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) 54 memsize = 0x04000000; 55 56 add_memory_region(0, memsize, BOOT_MEM_RAM); 57 } 58 59 void prom_putchar(char c) 60 { 61 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); 62 } 63 64 static void xxs1500_reset(char *c) 65 { 66 /* Jump to the reset vector */ 67 __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); 68 } 69 70 static void xxs1500_power_off(void) 71 { 72 while (1) 73 asm volatile ( 74 " .set mips32 \n" 75 " wait \n" 76 " .set mips0 \n"); 77 } 78 79 void __init board_setup(void) 80 { 81 u32 pin_func; 82 83 pm_power_off = xxs1500_power_off; 84 _machine_halt = xxs1500_power_off; 85 _machine_restart = xxs1500_reset; 86 87 alchemy_gpio1_input_enable(); 88 alchemy_gpio2_enable(); 89 90 /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */ 91 pin_func = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3; 92 pin_func |= SYS_PF_UR3; 93 alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC); 94 95 /* Enable UART */ 96 alchemy_uart_enable(AU1000_UART3_PHYS_ADDR); 97 /* Enable DTR (MCR bit 0) = USB power up */ 98 __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18)); 99 wmb(); 100 } 101 102 /******************************************************************************/ 103 104 static struct resource xxs1500_pcmcia_res[] = { 105 { 106 .name = "pcmcia-io", 107 .flags = IORESOURCE_MEM, 108 .start = AU1000_PCMCIA_IO_PHYS_ADDR, 109 .end = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1, 110 }, 111 { 112 .name = "pcmcia-attr", 113 .flags = IORESOURCE_MEM, 114 .start = AU1000_PCMCIA_ATTR_PHYS_ADDR, 115 .end = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 116 }, 117 { 118 .name = "pcmcia-mem", 119 .flags = IORESOURCE_MEM, 120 .start = AU1000_PCMCIA_MEM_PHYS_ADDR, 121 .end = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 122 }, 123 }; 124 125 static struct platform_device xxs1500_pcmcia_dev = { 126 .name = "xxs1500_pcmcia", 127 .id = -1, 128 .num_resources = ARRAY_SIZE(xxs1500_pcmcia_res), 129 .resource = xxs1500_pcmcia_res, 130 }; 131 132 static struct platform_device *xxs1500_devs[] __initdata = { 133 &xxs1500_pcmcia_dev, 134 }; 135 136 static int __init xxs1500_dev_init(void) 137 { 138 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH); 139 irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW); 140 irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW); 141 irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW); 142 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); 143 irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW); 144 145 irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW); 146 irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW); 147 irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW); 148 irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW); 149 irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */ 150 irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW); 151 152 return platform_add_devices(xxs1500_devs, 153 ARRAY_SIZE(xxs1500_devs)); 154 } 155 device_initcall(xxs1500_dev_init); 156