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/mach-au1x00/au1000.h> 33 #include <prom.h> 34 35 const char *get_system_type(void) 36 { 37 return "XXS1500"; 38 } 39 40 void __init prom_init(void) 41 { 42 unsigned char *memsize_str; 43 unsigned long memsize; 44 45 prom_argc = fw_arg0; 46 prom_argv = (char **)fw_arg1; 47 prom_envp = (char **)fw_arg2; 48 49 prom_init_cmdline(); 50 51 memsize_str = prom_getenv("memsize"); 52 if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) 53 memsize = 0x04000000; 54 55 add_memory_region(0, memsize, BOOT_MEM_RAM); 56 } 57 58 void prom_putchar(unsigned char c) 59 { 60 alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); 61 } 62 63 static void xxs1500_reset(char *c) 64 { 65 /* Jump to the reset vector */ 66 __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); 67 } 68 69 static void xxs1500_power_off(void) 70 { 71 while (1) 72 asm volatile ( 73 " .set mips32 \n" 74 " wait \n" 75 " .set mips0 \n"); 76 } 77 78 void __init board_setup(void) 79 { 80 u32 pin_func; 81 82 pm_power_off = xxs1500_power_off; 83 _machine_halt = xxs1500_power_off; 84 _machine_restart = xxs1500_reset; 85 86 alchemy_gpio1_input_enable(); 87 alchemy_gpio2_enable(); 88 89 /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */ 90 pin_func = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3; 91 pin_func |= SYS_PF_UR3; 92 alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC); 93 94 /* Enable UART */ 95 alchemy_uart_enable(AU1000_UART3_PHYS_ADDR); 96 /* Enable DTR (MCR bit 0) = USB power up */ 97 __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18)); 98 wmb(); 99 } 100 101 /******************************************************************************/ 102 103 static struct resource xxs1500_pcmcia_res[] = { 104 { 105 .name = "pcmcia-io", 106 .flags = IORESOURCE_MEM, 107 .start = AU1000_PCMCIA_IO_PHYS_ADDR, 108 .end = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1, 109 }, 110 { 111 .name = "pcmcia-attr", 112 .flags = IORESOURCE_MEM, 113 .start = AU1000_PCMCIA_ATTR_PHYS_ADDR, 114 .end = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1, 115 }, 116 { 117 .name = "pcmcia-mem", 118 .flags = IORESOURCE_MEM, 119 .start = AU1000_PCMCIA_MEM_PHYS_ADDR, 120 .end = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1, 121 }, 122 }; 123 124 static struct platform_device xxs1500_pcmcia_dev = { 125 .name = "xxs1500_pcmcia", 126 .id = -1, 127 .num_resources = ARRAY_SIZE(xxs1500_pcmcia_res), 128 .resource = xxs1500_pcmcia_res, 129 }; 130 131 static struct platform_device *xxs1500_devs[] __initdata = { 132 &xxs1500_pcmcia_dev, 133 }; 134 135 static int __init xxs1500_dev_init(void) 136 { 137 irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH); 138 irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW); 139 irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW); 140 irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW); 141 irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); 142 irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW); 143 144 irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW); 145 irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW); 146 irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW); 147 irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW); 148 irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */ 149 irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW); 150 151 return platform_add_devices(xxs1500_devs, 152 ARRAY_SIZE(xxs1500_devs)); 153 } 154 device_initcall(xxs1500_dev_init); 155