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/config.h>
  11 #include <linux/init.h>
  12 #include <linux/pagemap.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/ioport.h>
  15 #include <asm/io.h>
  16 #include <asm/ppc4xx_pic.h>
  17 #include <linux/delay.h>
  18 #include <asm/machdep.h>
  19
  20 /*
  21  * Define external IRQ senses and polarities.
  22  */
  23 unsigned char ppc4xx_uic_ext_irq_cfg[] __initdata = {
  24         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 7 */
  25         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 8 */
  26         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 9 */
  27         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 0 */
  28         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 1 */
  29         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 2 */
  30         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 3 */
  31         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 4 */
  32         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 5 */
  33         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* Ext Int 6 */
  34 };
  35
  36 static struct resource smc91x_resources[] = {
  37         [0] = {
  38                 .start  = SMC91111_BASE_ADDR,
  39                 .end    = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
  40                 .flags  = IORESOURCE_MEM,
  41         },
  42         [1] = {
  43                 .start  = SMC91111_IRQ,
  44                 .end    = SMC91111_IRQ,
  45                 .flags  = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct platform_device smc91x_device = {
  50         .name           = "smc91x",
  51         .id             = 0,
  52         .num_resources  = ARRAY_SIZE(smc91x_resources),
  53         .resource       = smc91x_resources,
  54 };
  55
  56 static struct platform_device *redwood6_devs[] __initdata = {
  57         &smc91x_device,
  58 };
  59
  60 static int __init
  61 redwood6_platform_add_devices(void)
  62 {
  63         return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
  64 }
  65
  66
  67 void __init
  68 redwood6_setup_arch(void)
  69 {
  70 #ifdef CONFIG_IDE
  71         void *xilinx, *xilinx_1, *xilinx_2;
  72         unsigned short us_reg5;
  73 #endif
  74
  75         ppc4xx_setup_arch();
  76
  77 #ifdef CONFIG_IDE
  78         xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
  79         /* init xilinx control registers - enable ide mux, clear reset bit */
  80         if (!xilinx) {
  81                 printk(KERN_CRIT
  82                        "redwood6_setup_arch() xilinxi ioremap failed\n");
  83                 return;
  84         }
  85         xilinx_1 = xilinx + 0xa;
  86         xilinx_2 = xilinx + 0xe;
  87
  88         us_reg5 = readb(xilinx_1);
  89         writeb(0x01d1, xilinx_1);
  90         writeb(0x0008, xilinx_2);
  91
  92         udelay(10 * 1000);
  93
  94         writeb(0x01d1, xilinx_1);
  95         writeb(0x0008, xilinx_2);
  96 #endif
  97
  98 #ifdef DEBUG_BRINGUP
  99         bd_t *bip = (bd_t *) __res;
 100         printk("\n");
 101         printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
 102         printk("\n");
 103         printk("bi_s_version\t %s\n", bip->bi_s_version);
 104         printk("bi_r_version\t %s\n", bip->bi_r_version);
 105         printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
 106                bip->bi_memsize / (1024 * 1000));
 107         printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
 108                bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
 109                bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
 110
 111         printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
 112                bip->bi_intfreq, bip->bi_intfreq / 1000000);
 113
 114         printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
 115                bip->bi_busfreq, bip->bi_busfreq / 1000000);
 116         printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
 117                bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
 118
 119         printk("\n");
 120 #endif
 121
 122         /* Identify the system */
 123         printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
 124         printk(KERN_INFO
 125                "Port by MontaVista Software, Inc. (source@mvista.com)\n");
 126
 127         device_initcall(redwood6_platform_add_devices);
 128 }
 129
 130 void __init
 131 redwood6_map_io(void)
 132 {
 133         int i;
 134
 135         ppc4xx_map_io();
 136         for (i = 0; i < 16; i++) {
 137                 unsigned long v, p;
 138
 139                 /* 0x400x0000 -> 0xe00x0000 */
 140                 p = 0x40000000 | (i << 16);
 141                 v = STBx25xx_IO_BASE | (i << 16);
 142
 143                 io_block_mapping(v, p, PAGE_SIZE,
 144                                  _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
 145                                  _PAGE_GUARDED);
 146         }
 147 }
 148
 149 void __init
 150 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 151               unsigned long r6, unsigned long r7)
 152 {
 153         ppc4xx_init(r3, r4, r5, r6, r7);
 154
 155         ppc_md.setup_arch = redwood6_setup_arch;
 156         ppc_md.setup_io_mappings = redwood6_map_io;
 157 }