arch/ppc/platforms/4xx/walnut.h

   1 /*
   2  * arch/ppc/platforms/4xx/walnut.h
   3  *
   4  * Macros, definitions, and data structures specific to the IBM PowerPC
   5  * 405GP "Walnut" evaluation board.
   6  *
   7  * Authors: Grant Erickson <grant@lcse.umn.edu>, Frank Rowand
   8  * <frank_rowand@mvista.com>, Debbie Chu <debbie_chu@mvista.com> or
   9  * source@mvista.com
  10  *
  11  * Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
  12  *
  13  * 2000 (c) MontaVista, Software, Inc.  This file is licensed under
  14  * the terms of the GNU General Public License version 2.  This program
  15  * is licensed "as is" without any warranty of any kind, whether express
  16  * or implied.
  17  */
  18
  19 #ifdef __KERNEL__
  20 #ifndef __ASM_WALNUT_H__
  21 #define __ASM_WALNUT_H__
  22
  23 /* We have a 405GP core */
  24 #include <platforms/4xx/ibm405gp.h>
  25
  26 #ifndef __ASSEMBLY__
  27 /*
  28  * Data structure defining board information maintained by the boot
  29  * ROM on IBM's "Walnut" evaluation board. An effort has been made to
  30  * keep the field names consistent with the 8xx 'bd_t' board info
  31  * structures.
  32  */
  33
  34 typedef struct board_info {
  35         unsigned char    bi_s_version[4];       /* Version of this structure */
  36         unsigned char    bi_r_version[30];      /* Version of the IBM ROM */
  37         unsigned int     bi_memsize;            /* DRAM installed, in bytes */
  38         unsigned char    bi_enetaddr[6];        /* Local Ethernet MAC address */
  39         unsigned char    bi_pci_enetaddr[6];    /* PCI Ethernet MAC address */
  40         unsigned int     bi_intfreq;            /* Processor speed, in Hz */
  41         unsigned int     bi_busfreq;            /* PLB Bus speed, in Hz */
  42         unsigned int     bi_pci_busfreq;        /* PCI Bus speed, in Hz */
  43 } bd_t;
  44
  45 /* Some 4xx parts use a different timebase frequency from the internal clock.
  46 */
  47 #define bi_tbfreq bi_intfreq
  48
  49
  50 /* Memory map for the IBM "Walnut" 405GP evaluation board.
  51  * Generic 4xx plus RTC.
  52  */
  53
  54 extern void *walnut_rtc_base;
  55 #define WALNUT_RTC_PADDR        ((uint)0xf0000000)
  56 #define WALNUT_RTC_VADDR        WALNUT_RTC_PADDR
  57 #define WALNUT_RTC_SIZE         ((uint)8*1024)
  58
  59 #ifdef CONFIG_PPC405GP_INTERNAL_CLOCK
  60 #define BASE_BAUD               201600
  61 #else
  62 #define BASE_BAUD               691200
  63 #endif
  64
  65 #define WALNUT_PS2_BASE         0xF0100000
  66 #define WALNUT_FPGA_BASE        0xF0300000
  67
  68 #define PPC4xx_MACHINE_NAME     "IBM Walnut"
  69
  70 #endif /* !__ASSEMBLY__ */
  71 #endif /* __ASM_WALNUT_H__ */
  72 #endif /* __KERNEL__ */