arch/ppc/platforms/prpmc750.h

   1 /*
   2  * arch/ppc/platforms/prpmc750.h
   3  *
   4  * Definitions for Motorola PrPMC750 board support
   5  *
   6  * Author: Matt Porter <mporter@mvista.com>
   7  *
   8  * 2001-2004 (c) MontaVista, Software, Inc.  This file is licensed under
   9  * the terms of the GNU General Public License version 2.  This program
  10  * is licensed "as is" without any warranty of any kind, whether express
  11  * or implied.
  12  */
  13
  14 #ifdef __KERNEL__
  15 #ifndef __ASM_PRPMC750_H__
  16 #define __ASM_PRPMC750_H__
  17
  18 /*
  19  * Due to limitations imposed by legacy hardware (primarily IDE controllers),
  20  * the PrPMC750 carrier board operates using a PReP address map.
  21  *
  22  * From Processor (physical) -> PCI:
  23  *   PCI Mem Space: 0xc0000000 - 0xfe000000 -> 0x00000000 - 0x3e000000 (768 MB)
  24  *   PCI I/O Space: 0x80000000 - 0x90000000 -> 0x00000000 - 0x10000000 (256 MB)
  25  *      Note: Must skip 0xfe000000-0xfe400000 for CONFIG_HIGHMEM/PKMAP area
  26  *
  27  * From PCI -> Processor (physical):
  28  *   System Memory: 0x80000000 -> 0x00000000
  29  */
  30
  31 #define PRPMC750_ISA_IO_BASE            PREP_ISA_IO_BASE
  32 #define PRPMC750_ISA_MEM_BASE           PREP_ISA_MEM_BASE
  33
  34 /* PCI Memory space mapping info */
  35 #define PRPMC750_PCI_MEM_SIZE           0x30000000U
  36 #define PRPMC750_PROC_PCI_MEM_START     PRPMC750_ISA_MEM_BASE
  37 #define PRPMC750_PROC_PCI_MEM_END       (PRPMC750_PROC_PCI_MEM_START +  \
  38                                          PRPMC750_PCI_MEM_SIZE - 1)
  39 #define PRPMC750_PCI_MEM_START          0x00000000U
  40 #define PRPMC750_PCI_MEM_END            (PRPMC750_PCI_MEM_START +       \
  41                                          PRPMC750_PCI_MEM_SIZE - 1)
  42
  43 /* PCI I/O space mapping info */
  44 #define PRPMC750_PCI_IO_SIZE            0x10000000U
  45 #define PRPMC750_PROC_PCI_IO_START      PRPMC750_ISA_IO_BASE
  46 #define PRPMC750_PROC_PCI_IO_END        (PRPMC750_PROC_PCI_IO_START +   \
  47                                          PRPMC750_PCI_IO_SIZE - 1)
  48 #define PRPMC750_PCI_IO_START           0x00000000U
  49 #define PRPMC750_PCI_IO_END             (PRPMC750_PCI_IO_START +        \
  50                                          PRPMC750_PCI_IO_SIZE - 1)
  51
  52 /* System memory mapping info */
  53 #define PRPMC750_PCI_DRAM_OFFSET        PREP_PCI_DRAM_OFFSET
  54 #define PRPMC750_PCI_PHY_MEM_OFFSET     (PRPMC750_ISA_MEM_BASE-PRPMC750_PCI_MEM_START)
  55
  56 /* Register address definitions */
  57 #define PRPMC750_HAWK_SMC_BASE          0xfef80000U
  58 #define PRPMC750_HAWK_PPC_REG_BASE      0xfeff0000U
  59
  60 #define PRPMC750_BASE_BAUD              1843200
  61 #define PRPMC750_SERIAL_0               0xfef88000
  62 #define PRPMC750_SERIAL_0_DLL           (PRPMC750_SERIAL_0 + (UART_DLL << 4))
  63 #define PRPMC750_SERIAL_0_DLM           (PRPMC750_SERIAL_0 + (UART_DLM << 4))
  64 #define PRPMC750_SERIAL_0_LCR           (PRPMC750_SERIAL_0 + (UART_LCR << 4))
  65
  66 #define PRPMC750_STATUS_REG             0xfef88080
  67 #define PRPMC750_BAUDOUT_MASK           0x02
  68 #define PRPMC750_MONARCH_MASK           0x01
  69
  70 #define PRPMC750_MODRST_REG             0xfef880a0
  71 #define PRPMC750_MODRST_MASK            0x01
  72
  73 #define PRPMC750_PIRQ_REG               0xfef880b0
  74 #define PRPMC750_SEL1_MASK              0x02
  75 #define PRPMC750_SEL0_MASK              0x01
  76
  77 #define PRPMC750_TBEN_REG               0xfef880c0
  78 #define PRPMC750_TBEN_MASK              0x01
  79
  80 /* UART Defines. */
  81 #define RS_TABLE_SIZE  4
  82
  83 /* Rate for the 1.8432 Mhz clock for the onboard serial chip */
  84 #define BASE_BAUD  (PRPMC750_BASE_BAUD / 16)
  85
  86 #define STD_COM_FLAGS ASYNC_BOOT_AUTOCONF
  87
  88 #define SERIAL_PORT_DFNS \
  89         { 0, BASE_BAUD, PRPMC750_SERIAL_0, 1, STD_COM_FLAGS, \
  90                 iomem_base: (unsigned char *)PRPMC750_SERIAL_0, \
  91                 iomem_reg_shift: 4, \
  92                 io_type: SERIAL_IO_MEM } /* ttyS0 */
  93
  94 #endif                          /* __ASM_PRPMC750_H__ */
  95 #endif                          /* __KERNEL__ */