arch/ppc/platforms/4xx/redwood6.c

   1 /*
   2  * Author: Armin Kuster <akuster@mvista.com>
   3  *
   4  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
   5  * the terms of the GNU General Public License version 2.  This program
   6  * is licensed "as is" without any warranty of any kind, whether express
   7  * or implied.
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/pagemap.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/ioport.h>
  14 #include <asm/io.h>
  15 #include <asm/ppc4xx_pic.h>
  16 #include <linux/delay.h>
  17 #include <asm/machdep.h>
  18
  19 /*
  20  * Define external IRQ senses and polarities.
  21  */
  22 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
  23         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 7 */
  24         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 8 */
  25         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 9 */
  26         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 0 */
  27         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 1 */
  28         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 2 */
  29         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 3 */
  30         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 4 */
  31         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 5 */
  32         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 6 */
  33 };
  34
  35 static struct resource smc91x_resources[] = {
  36         [0] = {
  37                 .start  = SMC91111_BASE_ADDR,
  38                 .end    = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
  39                 .flags  = IORESOURCE_MEM,
  40         },
  41         [1] = {
  42                 .start  = SMC91111_IRQ,
  43                 .end    = SMC91111_IRQ,
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device smc91x_device = {
  49         .name           = "smc91x",
  50         .id             = 0,
  51         .num_resources  = ARRAY_SIZE(smc91x_resources),
  52         .resource       = smc91x_resources,
  53 };
  54
  55 static struct platform_device *redwood6_devs[] __initdata = {
  56         &smc91x_device,
  57 };
  58
  59 static int __init
  60 redwood6_platform_add_devices(void)
  61 {
  62         return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
  63 }
  64
  65
  66 void __init
  67 redwood6_setup_arch(void)
  68 {
  69 #ifdef CONFIG_IDE
  70         void *xilinx, *xilinx_1, *xilinx_2;
  71         unsigned short us_reg5;
  72 #endif
  73
  74         ppc4xx_setup_arch();
  75
  76 #ifdef CONFIG_IDE
  77         xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
  78         /* init xilinx control registers - enable ide mux, clear reset bit */
  79         if (!xilinx) {
  80                 printk(KERN_CRIT
  81                        "redwood6_setup_arch() xilinxi ioremap failed\n");
  82                 return;
  83         }
  84         xilinx_1 = xilinx + 0xa;
  85         xilinx_2 = xilinx + 0xe;
  86
  87         us_reg5 = readb(xilinx_1);
  88         writeb(0x01d1, xilinx_1);
  89         writeb(0x0008, xilinx_2);
  90
  91         udelay(10 * 1000);
  92
  93         writeb(0x01d1, xilinx_1);
  94         writeb(0x0008, xilinx_2);
  95 #endif
  96
  97 #ifdef DEBUG_BRINGUP
  98         bd_t *bip = (bd_t *) __res;
  99         printk("\n");
 100         printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
 101         printk("\n");
 102         printk("bi_s_version\t %s\n", bip->bi_s_version);
 103         printk("bi_r_version\t %s\n", bip->bi_r_version);
 104         printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
 105                bip->bi_memsize / (1024 * 1000));
 106         printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
 107                bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
 108                bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
 109
 110         printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
 111                bip->bi_intfreq, bip->bi_intfreq / 1000000);
 112
 113         printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
 114                bip->bi_busfreq, bip->bi_busfreq / 1000000);
 115         printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
 116                bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
 117
 118         printk("\n");
 119 #endif
 120
 121         /* Identify the system */
 122         printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
 123         printk(KERN_INFO
 124                "Port by MontaVista Software, Inc. (source@mvista.com)\n");
 125
 126         device_initcall(redwood6_platform_add_devices);
 127 }
 128
 129 void __init
 130 redwood6_map_io(void)
 131 {
 132         int i;
 133
 134         ppc4xx_map_io();
 135         for (i = 0; i < 16; i++) {
 136                 unsigned long v, p;
 137
 138                 /* 0x400x0000 -> 0xe00x0000 */
 139                 p = 0x40000000 | (i << 16);
 140                 v = STBx25xx_IO_BASE | (i << 16);
 141
 142                 io_block_mapping(v, p, PAGE_SIZE,
 143                                  _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
 144                                  _PAGE_GUARDED);
 145         }
 146 }
 147
 148 void __init
 149 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 150               unsigned long r6, unsigned long r7)
 151 {
 152         ppc4xx_init(r3, r4, r5, r6, r7);
 153
 154         ppc_md.setup_arch = redwood6_setup_arch;
 155         ppc_md.setup_io_mappings = redwood6_map_io;
 156 }