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

   1 /*
   2  * arch/ppc/platforms/4xx/redwood6.c
   3  *
   4  * Author: Armin Kuster <akuster@mvista.com>
   5  *
   6  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
   7  * the terms of the GNU General Public License version 2.  This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11
  12 #include <linux/config.h>
  13 #include <linux/init.h>
  14 #include <linux/pagemap.h>
  15 #include <linux/device.h>
  16 #include <linux/ioport.h>
  17 #include <asm/io.h>
  18 #include <asm/ppc4xx_pic.h>
  19 #include <linux/delay.h>
  20 #include <asm/machdep.h>
  21
  22
  23 /*
  24  * Define all of the IRQ senses and polarities.
  25  */
  26
  27 static u_char redwood6_IRQ_initsenses[] __initdata = {
  28         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 0: RTC/FPC */
  29         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 1: Transport */
  30         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 2: Audio Dec */
  31         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 3: Video Dec */
  32         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 4: DMA Chan 0 */
  33         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 5: DMA Chan 1 */
  34         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 6: DMA Chan 2 */
  35         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 7: DMA Chan 3 */
  36         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 8: SmartCard 0 */
  37         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 9: IIC0 */
  38         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 10: IRR */
  39         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 11: Cap Timers */
  40         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 12: Cmp Timers */
  41         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 13: Serial Port */
  42         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 14: Soft Modem */
  43         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 15: Down Ctrs */
  44         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 16: SmartCard 1 */
  45         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 17: Ext Int 7 */
  46         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 18: Ext Int 8 */
  47         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 19: Ext Int 9 */
  48         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 20: Serial 0 */
  49         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 21: Serial 1 */
  50         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 22: Serial 2 */
  51         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 23: XPT_DMA */
  52         (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),      /* 24: DCR timeout */
  53         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 25: Ext Int 0 */
  54         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 26: Ext Int 1 */
  55         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 27: Ext Int 2 */
  56         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 28: Ext Int 3 */
  57         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 29: Ext Int 4 */
  58         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 30: Ext Int 5 */
  59         (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),      /* 31: Ext Int 6 */
  60 };
  61
  62 static struct resource smc91x_resources[] = {
  63         [0] = {
  64                 .start  = SMC91111_BASE_ADDR,
  65                 .end    = SMC91111_BASE_ADDR + SMC91111_REG_SIZE - 1,
  66                 .flags  = IORESOURCE_MEM,
  67         },
  68         [1] = {
  69                 .start  = SMC91111_IRQ,
  70                 .end    = SMC91111_IRQ,
  71                 .flags  = IORESOURCE_IRQ,
  72         },
  73 };
  74
  75 static struct platform_device smc91x_device = {
  76         .name           = "smc91x",
  77         .id             = 0,
  78         .num_resources  = ARRAY_SIZE(smc91x_resources),
  79         .resource       = smc91x_resources,
  80 };
  81
  82 static struct platform_device *redwood6_devs[] __initdata = {
  83         &smc91x_device,
  84 };
  85
  86 static int __init
  87 redwood6_platform_add_devices(void)
  88 {
  89         return platform_add_devices(redwood6_devs, ARRAY_SIZE(redwood6_devs));
  90 }
  91
  92
  93 void __init
  94 redwood6_setup_arch(void)
  95 {
  96 #ifdef CONFIG_IDE
  97         void *xilinx, *xilinx_1, *xilinx_2;
  98         unsigned short us_reg5;
  99 #endif
 100
 101         ppc4xx_setup_arch();
 102
 103 #ifdef CONFIG_IDE
 104         xilinx = (unsigned long) ioremap(IDE_XLINUX_MUX_BASE, 0x10);
 105         /* init xilinx control registers - enable ide mux, clear reset bit */
 106         if (!xilinx) {
 107                 printk(KERN_CRIT
 108                        "redwood6_setup_arch() xilinxi ioremap failed\n");
 109                 return;
 110         }
 111         xilinx_1 = xilinx + 0xa;
 112         xilinx_2 = xilinx + 0xe;
 113
 114         us_reg5 = readb(xilinx_1);
 115         writeb(0x01d1, xilinx_1);
 116         writeb(0x0008, xilinx_2);
 117
 118         udelay(10 * 1000);
 119
 120         writeb(0x01d1, xilinx_1);
 121         writeb(0x0008, xilinx_2);
 122 #endif
 123
 124 #ifdef DEBUG_BRINGUP
 125         bd_t *bip = (bd_t *) __res;
 126         printk("\n");
 127         printk("machine\t: %s\n", PPC4xx_MACHINE_NAME);
 128         printk("\n");
 129         printk("bi_s_version\t %s\n", bip->bi_s_version);
 130         printk("bi_r_version\t %s\n", bip->bi_r_version);
 131         printk("bi_memsize\t 0x%8.8x\t %dMBytes\n", bip->bi_memsize,
 132                bip->bi_memsize / (1024 * 1000));
 133         printk("bi_enetaddr %d\t %2.2x%2.2x%2.2x-%2.2x%2.2x%2.2x\n", 0,
 134                bip->bi_enetaddr[0], bip->bi_enetaddr[1], bip->bi_enetaddr[2],
 135                bip->bi_enetaddr[3], bip->bi_enetaddr[4], bip->bi_enetaddr[5]);
 136
 137         printk("bi_intfreq\t 0x%8.8x\t clock:\t %dMhz\n",
 138                bip->bi_intfreq, bip->bi_intfreq / 1000000);
 139
 140         printk("bi_busfreq\t 0x%8.8x\t plb bus clock:\t %dMHz\n",
 141                bip->bi_busfreq, bip->bi_busfreq / 1000000);
 142         printk("bi_tbfreq\t 0x%8.8x\t TB freq:\t %dMHz\n",
 143                bip->bi_tbfreq, bip->bi_tbfreq / 1000000);
 144
 145         printk("\n");
 146 #endif
 147         ibm4xxPIC_InitSenses = redwood6_IRQ_initsenses;
 148         ibm4xxPIC_NumInitSenses = sizeof(redwood6_IRQ_initsenses);
 149
 150         /* Identify the system */
 151         printk(KERN_INFO "IBM Redwood6 (STBx25XX) Platform\n");
 152         printk(KERN_INFO
 153                "Port by MontaVista Software, Inc. (source@mvista.com)\n");
 154
 155         device_initcall(redwood6_platform_add_devices);
 156 }
 157
 158 void __init
 159 redwood6_map_io(void)
 160 {
 161         int i;
 162
 163         ppc4xx_map_io();
 164         for (i = 0; i < 16; i++) {
 165                 unsigned long v, p;
 166
 167                 /* 0x400x0000 -> 0xe00x0000 */
 168                 p = 0x40000000 | (i << 16);
 169                 v = STBx25xx_IO_BASE | (i << 16);
 170
 171                 io_block_mapping(v, p, PAGE_SIZE,
 172                                  _PAGE_NO_CACHE | pgprot_val(PAGE_KERNEL) |
 173                                  _PAGE_GUARDED);
 174         }
 175 }
 176
 177 void __init
 178 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 179               unsigned long r6, unsigned long r7)
 180 {
 181         ppc4xx_init(r3, r4, r5, r6, r7);
 182
 183         ppc_md.setup_arch = redwood6_setup_arch;
 184         ppc_md.setup_io_mappings = redwood6_map_io;
 185 }