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TOMOYO Linux Cross Reference
Linux/arch/mips/alchemy/board-xxs1500.c

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  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 

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