arch/powerpc/boot/redboot.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _PPC_REDBOOT_H
   3 #define _PPC_REDBOOT_H
   4
   5 //=========================================================================
   6 // include/asm-ppc/redboot.h
   7 //   Copyright (c) 2002, 2003 Gary Thomas (<gary@mlbassoc.com>
   8 //   Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
   9
  10 //
  11 // Board specific details, as provided by RedBoot
  12 //
  13
  14 /* A Board Information structure that is given to a program when
  15  * RedBoot starts it up.  Note: not all fields make sense for all
  16  * architectures and it's up to the platform specific code to fill
  17  * in the details.
  18  */
  19 typedef struct bd_info {
  20     unsigned int   bi_tag;        /* Should be 0x42444944 "BDID" */
  21     unsigned int   bi_size;       /* Size of this structure */
  22     unsigned int   bi_revision;   /* revision of this structure */
  23     unsigned int   bi_bdate;      /* bootstrap date, i.e. 0x19971106 */
  24     unsigned int   bi_memstart;   /* Memory start address */
  25     unsigned int   bi_memsize;    /* Memory (end) size in bytes */
  26     unsigned int   bi_intfreq;    /* Internal Freq, in Hz */
  27     unsigned int   bi_busfreq;    /* Bus Freq, in Hz */
  28     unsigned int   bi_cpmfreq;    /* CPM Freq, in Hz */
  29     unsigned int   bi_brgfreq;    /* BRG Freq, in Hz */
  30     unsigned int   bi_vco;        /* VCO Out from PLL */
  31     unsigned int   bi_pci_freq;   /* PCI Freq, in Hz */
  32     unsigned int   bi_baudrate;   /* Default console baud rate */
  33     unsigned int   bi_immr;       /* IMMR when called from boot rom */
  34     unsigned char  bi_enetaddr[6];
  35     unsigned int   bi_flashbase;  /* Physical address of FLASH memory */
  36     unsigned int   bi_flashsize;  /* Length of FLASH memory */
  37     int            bi_flashwidth; /* Width (8,16,32,64) */
  38     unsigned char *bi_cmdline;    /* Pointer to command line */
  39     unsigned char  bi_esa[3][6];  /* Ethernet station addresses */
  40     unsigned int   bi_ramdisk_begin, bi_ramdisk_end;
  41     struct {                      /* Information about [main] video screen */
  42         short x_res;              /*   Horizontal resolution in pixels */
  43         short y_res;              /*   Vertical resolution in pixels */
  44         short bpp;                /*   Bits/pixel */
  45         short mode;               /*   Type of pixels (packed, indexed) */
  46         unsigned long fb;         /*   Pointer to frame buffer (pixel) memory */
  47     } bi_video;
  48     void         (*bi_cputc)(char);   /* Write a character to the RedBoot console */
  49     char         (*bi_cgetc)(void);   /* Read a character from the RedBoot console */
  50     int          (*bi_ctstc)(void);   /* Test for input on the RedBoot console */
  51 } bd_t;
  52
  53 #define BI_REV 0x0102    /* Version 1.02 */
  54
  55 #define bi_pci_busfreq bi_pci_freq
  56 #define bi_immr_base   bi_immr
  57 #endif