arch/sh/boards/harp/setup.c

   1 /*
   2  * arch/sh/stboard/setup.c
   3  *
   4  * Copyright (C) 2001 Stuart Menefy (stuart.menefy@st.com)
   5  *
   6  * May be copied or modified under the terms of the GNU General Public
   7  * License.  See linux/COPYING for more information.
   8  *
   9  * STMicroelectronics ST40STB1 HARP and compatible support.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <asm/io.h>
  15 #include <asm/harp/harp.h>
  16
  17 const char *get_system_type(void)
  18 {
  19         return "STB1 Harp";
  20 }
  21
  22 /*
  23  * Initialize the board
  24  */
  25 int __init platform_setup(void)
  26 {
  27 #ifdef CONFIG_SH_STB1_HARP
  28         unsigned long ic8_version, ic36_version;
  29
  30         ic8_version = ctrl_inl(EPLD_REVID2);
  31         ic36_version = ctrl_inl(EPLD_REVID1);
  32
  33         printk("STMicroelectronics STB1 HARP initialisaton\n");
  34         printk("EPLD versions: IC8: %d.%02d, IC36: %d.%02d\n",
  35                (ic8_version >> 4) & 0xf, ic8_version & 0xf,
  36                (ic36_version >> 4) & 0xf, ic36_version & 0xf);
  37 #elif defined(CONFIG_SH_STB1_OVERDRIVE)
  38         unsigned long version;
  39
  40         version = ctrl_inl(EPLD_REVID);
  41
  42         printk("STMicroelectronics STB1 Overdrive initialisaton\n");
  43         printk("EPLD version: %d.%02d\n",
  44                (version >> 4) & 0xf, version & 0xf);
  45 #else
  46 #error Undefined machine
  47 #endif
  48
  49         /* Currently all STB1 chips have problems with the sleep instruction,
  50          * so disable it here.
  51          */
  52         disable_hlt();
  53
  54         return 0;
  55 }
  56
  57 /*
  58  * pcibios_map_platform_irq
  59  *
  60  * This is board specific and returns the IRQ for a given PCI device.
  61  * It is used by the PCI code (arch/sh/kernel/st40_pci*)
  62  *
  63  */
  64
  65 #define HARP_PCI_IRQ    1
  66 #define HARP_BRIDGE_IRQ 2
  67 #define OVERDRIVE_SLOT0_IRQ 0
  68
  69
  70 int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
  71 {
  72         switch (slot) {
  73 #ifdef CONFIG_SH_STB1_HARP
  74         case 2:         /*This is the PCI slot on the */
  75                 return HARP_PCI_IRQ;
  76         case 1:         /* this is the bridge */
  77                 return HARP_BRIDGE_IRQ;
  78 #elif defined(CONFIG_SH_STB1_OVERDRIVE)
  79         case 1:
  80         case 2:
  81         case 3:
  82                 return slot - 1;
  83 #else
  84 #error Unknown board
  85 #endif
  86         default:
  87                 return -1;
  88         }
  89 }
  90