arch/ppc/platforms/pplus.h

   1 /*
   2  * Definitions for Motorola MCG Falcon/Raven & HAWK North Bridge & Memory ctlr.
   3  *
   4  * Author: Mark A. Greerinclude/asm-ppc/hawk.h
   5  *         mgreer@mvista.com
   6  *
   7  * Modified by Randy Vinson (rvinson@mvista.com)
   8  *
   9  * 2001-2004 (c) MontaVista, Software, Inc.  This file is licensed under
  10  * the terms of the GNU General Public License version 2.  This program
  11  * is licensed "as is" without any warranty of any kind, whether express
  12  * or implied.
  13  */
  14
  15 #ifndef __PPC_PPLUS_H
  16 #define __PPC_PPLUS_H
  17
  18 #include <asm/io.h>
  19
  20 /*
  21  * Due to limitations imposed by legacy hardware (primarily IDE controllers),
  22  * the PPLUS boards operate using a PReP address map.
  23  *
  24  * From Processor (physical) -> PCI:
  25  *   PCI Mem Space: 0xc0000000 - 0xfe000000 -> 0x00000000 - 0x3e000000 (768 MB)
  26  *   PCI I/O Space: 0x80000000 - 0x90000000 -> 0x00000000 - 0x10000000 (256 MB)
  27  *      Note: Must skip 0xfe000000-0xfe400000 for CONFIG_HIGHMEM/PKMAP area
  28  *
  29  * From PCI -> Processor (physical):
  30  *   System Memory: 0x80000000 -> 0x00000000
  31  */
  32
  33 #define PPLUS_ISA_MEM_BASE              PREP_ISA_MEM_BASE
  34 #define PPLUS_ISA_IO_BASE               PREP_ISA_IO_BASE
  35
  36 /* PCI Memory space mapping info */
  37 #define PPLUS_PCI_MEM_SIZE              0x30000000U
  38 #define PPLUS_PROC_PCI_MEM_START        PPLUS_ISA_MEM_BASE
  39 #define PPLUS_PROC_PCI_MEM_END          (PPLUS_PROC_PCI_MEM_START +     \
  40                                          PPLUS_PCI_MEM_SIZE - 1)
  41 #define PPLUS_PCI_MEM_START             0x00000000U
  42 #define PPLUS_PCI_MEM_END               (PPLUS_PCI_MEM_START +  \
  43                                          PPLUS_PCI_MEM_SIZE - 1)
  44
  45 /* PCI I/O space mapping info */
  46 #define PPLUS_PCI_IO_SIZE               0x10000000U
  47 #define PPLUS_PROC_PCI_IO_START         PPLUS_ISA_IO_BASE
  48 #define PPLUS_PROC_PCI_IO_END           (PPLUS_PROC_PCI_IO_START +      \
  49                                          PPLUS_PCI_IO_SIZE - 1)
  50 #define PPLUS_PCI_IO_START              0x00000000U
  51 #define PPLUS_PCI_IO_END                (PPLUS_PCI_IO_START +   \
  52                                          PPLUS_PCI_IO_SIZE - 1)
  53 /* System memory mapping info */
  54 #define PPLUS_PCI_DRAM_OFFSET           PREP_PCI_DRAM_OFFSET
  55 #define PPLUS_PCI_PHY_MEM_OFFSET        (PPLUS_ISA_MEM_BASE-PPLUS_PCI_MEM_START)
  56
  57 /* Define base addresses for important sets of registers */
  58 #define PPLUS_HAWK_SMC_BASE             0xfef80000U
  59 #define PPLUS_HAWK_PPC_REG_BASE         0xfeff0000U
  60 #define PPLUS_SYS_CONFIG_REG            0xfef80400U
  61 #define PPLUS_L2_CONTROL_REG            0x8000081cU
  62
  63 #define PPLUS_VGA_MEM_BASE              0xf0000000U
  64
  65 #endif  /* __PPC_PPLUS_H */