arch/mips/alchemy/board-xxs1500.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * BRIEF MODULE DESCRIPTION
   4  *      MyCable XXS1500 board support
   5  *
   6  * Copyright 2003, 2008 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc. <source@mvista.com>
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/init.h>
  12 #include <linux/interrupt.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/gpio.h>
  15 #include <linux/delay.h>
  16 #include <linux/pm.h>
  17 #include <asm/bootinfo.h>
  18 #include <asm/reboot.h>
  19 #include <asm/setup.h>
  20 #include <asm/mach-au1x00/au1000.h>
  21 #include <asm/mach-au1x00/gpio-au1000.h>
  22 #include <prom.h>
  23
  24 const char *get_system_type(void)
  25 {
  26         return "XXS1500";
  27 }
  28
  29 void prom_putchar(char c)
  30 {
  31         alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  32 }
  33
  34 static void xxs1500_reset(char *c)
  35 {
  36         /* Jump to the reset vector */
  37         __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
  38 }
  39
  40 static void xxs1500_power_off(void)
  41 {
  42         while (1)
  43                 asm volatile (
  44                 "       .set    mips32                                  \n"
  45                 "       wait                                            \n"
  46                 "       .set    mips0                                   \n");
  47 }
  48
  49 void __init board_setup(void)
  50 {
  51         u32 pin_func;
  52
  53         pm_power_off = xxs1500_power_off;
  54         _machine_halt = xxs1500_power_off;
  55         _machine_restart = xxs1500_reset;
  56
  57         alchemy_gpio1_input_enable();
  58         alchemy_gpio2_enable();
  59
  60         /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
  61         pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
  62         pin_func |= SYS_PF_UR3;
  63         alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
  64
  65         /* Enable UART */
  66         alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
  67         /* Enable DTR (MCR bit 0) = USB power up */
  68         __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
  69         wmb();
  70 }
  71
  72 /******************************************************************************/
  73
  74 static struct resource xxs1500_pcmcia_res[] = {
  75         {
  76                 .name   = "pcmcia-io",
  77                 .flags  = IORESOURCE_MEM,
  78                 .start  = AU1000_PCMCIA_IO_PHYS_ADDR,
  79                 .end    = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
  80         },
  81         {
  82                 .name   = "pcmcia-attr",
  83                 .flags  = IORESOURCE_MEM,
  84                 .start  = AU1000_PCMCIA_ATTR_PHYS_ADDR,
  85                 .end    = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
  86         },
  87         {
  88                 .name   = "pcmcia-mem",
  89                 .flags  = IORESOURCE_MEM,
  90                 .start  = AU1000_PCMCIA_MEM_PHYS_ADDR,
  91                 .end    = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
  92         },
  93 };
  94
  95 static struct platform_device xxs1500_pcmcia_dev = {
  96         .name           = "xxs1500_pcmcia",
  97         .id             = -1,
  98         .num_resources  = ARRAY_SIZE(xxs1500_pcmcia_res),
  99         .resource       = xxs1500_pcmcia_res,
 100 };
 101
 102 static struct platform_device *xxs1500_devs[] __initdata = {
 103         &xxs1500_pcmcia_dev,
 104 };
 105
 106 static int __init xxs1500_dev_init(void)
 107 {
 108         irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
 109         irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
 110         irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
 111         irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
 112         irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
 113         irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
 114
 115         irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
 116         irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
 117         irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
 118         irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
 119         irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
 120         irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
 121
 122         return platform_add_devices(xxs1500_devs,
 123                                     ARRAY_SIZE(xxs1500_devs));
 124 }
 125 device_initcall(xxs1500_dev_init);