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/config.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <asm/io.h>
  16 #include <asm/harp/harp.h>
  17
  18 const char *get_system_type(void)
  19 {
  20         return "STB1 Harp";
  21 }
  22
  23 /*
  24  * Initialize the board
  25  */
  26 int __init platform_setup(void)
  27 {
  28 #ifdef CONFIG_SH_STB1_HARP
  29         unsigned long ic8_version, ic36_version;
  30
  31         ic8_version = ctrl_inl(EPLD_REVID2);
  32         ic36_version = ctrl_inl(EPLD_REVID1);
  33
  34         printk("STMicroelectronics STB1 HARP initialisaton\n");
  35         printk("EPLD versions: IC8: %d.%02d, IC36: %d.%02d\n",
  36                (ic8_version >> 4) & 0xf, ic8_version & 0xf,
  37                (ic36_version >> 4) & 0xf, ic36_version & 0xf);
  38 #elif defined(CONFIG_SH_STB1_OVERDRIVE)
  39         unsigned long version;
  40
  41         version = ctrl_inl(EPLD_REVID);
  42
  43         printk("STMicroelectronics STB1 Overdrive initialisaton\n");
  44         printk("EPLD version: %d.%02d\n",
  45                (version >> 4) & 0xf, version & 0xf);
  46 #else
  47 #error Undefined machine
  48 #endif
  49
  50         /* Currently all STB1 chips have problems with the sleep instruction,
  51          * so disable it here.
  52          */
  53         disable_hlt();
  54
  55         return 0;
  56 }
  57
  58 /*
  59  * pcibios_map_platform_irq
  60  *
  61  * This is board specific and returns the IRQ for a given PCI device.
  62  * It is used by the PCI code (arch/sh/kernel/st40_pci*)
  63  *
  64  */
  65
  66 #define HARP_PCI_IRQ    1
  67 #define HARP_BRIDGE_IRQ 2
  68 #define OVERDRIVE_SLOT0_IRQ 0
  69
  70
  71 int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
  72 {
  73         switch (slot) {
  74 #ifdef CONFIG_SH_STB1_HARP
  75         case 2:         /*This is the PCI slot on the */
  76                 return HARP_PCI_IRQ;
  77         case 1:         /* this is the bridge */
  78                 return HARP_BRIDGE_IRQ;
  79 #elif defined(CONFIG_SH_STB1_OVERDRIVE)
  80         case 1:
  81         case 2:
  82         case 3:
  83                 return slot - 1;
  84 #else
  85 #error Unknown board
  86 #endif
  87         default:
  88                 return -1;
  89         }
  90 }
  91