pexpert/pexpert/arm64/boot.h

   1 /*
   2  * Copyright (c) 2007-2009 Apple Inc. All rights reserved.
   3  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   4  */
   5 /*
   6  * @OSF_COPYRIGHT@
   7  */
   8
   9 #ifndef _PEXPERT_ARM64_BOOT_H_
  10 #define _PEXPERT_ARM64_BOOT_H_
  11
  12 #ifdef KERNEL
  13 #include <kern/kern_types.h>
  14 #endif
  15 #include <pexpert/arm/consistent_debug.h>
  16 #include <pexpert/arm/protos.h>
  17
  18 /*
  19  * Maximum size of an environment variable value. This particular value is
  20  * chosen to accommodate the maximum encoded size of the system token as
  21  * computed in https://confluence.sd.apple.com/display/TK/System+Token.
  22  *
  23  * This value matches iBoot's IBOOT_MAX_ENV_VAR_DATA_SIZE.
  24  * There are no iBoot headers so have to duplicate it here for now.
  25  */
  26 #define BOOT_LINE_LENGTH        608
  27
  28 /*
  29  * Video information..
  30  */
  31
  32 struct Boot_Video {
  33         unsigned long   v_baseAddr;     /* Base address of video memory */
  34         unsigned long   v_display;      /* Display Code (if Applicable */
  35         unsigned long   v_rowBytes;     /* Number of bytes per pixel row */
  36         unsigned long   v_width;        /* Width */
  37         unsigned long   v_height;       /* Height */
  38         unsigned long   v_depth;        /* Pixel Depth and other parameters */
  39 };
  40
  41 #define kBootVideoDepthMask             (0xFF)
  42 #define kBootVideoDepthDepthShift       (0)
  43 #define kBootVideoDepthRotateShift      (8)
  44 #define kBootVideoDepthScaleShift       (16)
  45
  46 #define kBootFlagsDarkBoot              (1ULL << 0)
  47
  48 typedef struct Boot_Video       Boot_Video;
  49
  50 /* Boot argument structure - passed into Mach kernel at boot time.
  51  */
  52 #define kBootArgsRevision               1
  53 #define kBootArgsRevision2              2       /* added boot_args.bootFlags */
  54 #define kBootArgsVersion1               1
  55 #define kBootArgsVersion2               2
  56
  57 typedef struct boot_args {
  58         uint16_t                Revision;                       /* Revision of boot_args structure */
  59         uint16_t                Version;                        /* Version of boot_args structure */
  60         uint64_t                virtBase;                       /* Virtual base of memory */
  61         uint64_t                physBase;                       /* Physical base of memory */
  62         uint64_t                memSize;                        /* Size of memory */
  63         uint64_t                topOfKernelData;        /* Highest physical address used in kernel data area */
  64         Boot_Video              Video;                          /* Video Information */
  65         uint32_t                machineType;            /* Machine Type */
  66         void                    *deviceTreeP;           /* Base of flattened device tree */
  67         uint32_t                deviceTreeLength;       /* Length of flattened tree */
  68         char                    CommandLine[BOOT_LINE_LENGTH];  /* Passed in command line */
  69         uint64_t                bootFlags;              /* Additional flags specified by the bootloader */
  70         uint64_t                memSizeActual;          /* Actual size of memory */
  71 } boot_args;
  72
  73 #define SOC_DEVICE_TYPE_BUFFER_SIZE     32
  74
  75 #define PC_TRACE_BUF_SIZE               1024
  76
  77 #if SHMCON
  78 #define SHMCON_MEM 0x4000
  79 #else
  80 #define SHMCON_MEM 0
  81 #endif
  82
  83 #define CDBG_MEM ((sizeof(dbg_registry_t) + PAGE_SIZE - 1) & ~PAGE_MASK)
  84
  85 #define PE_EARLY_BOOT_VA (SHMCON_MEM + CDBG_MEM)
  86
  87 #endif /* _PEXPERT_ARM64_BOOT_H_ */