reactos/boot/freeldr/freeldr/include/arch/pc/pcbios.h

   1 #ifndef __ASM__
   2
   3 typedef enum
   4 {
   5         BiosMemoryUsable=1,
   6         BiosMemoryReserved,
   7         BiosMemoryAcpiReclaim,
   8         BiosMemoryAcpiNvs
   9 } BIOS_MEMORY_TYPE;
  10
  11 typedef struct
  12 {
  13         ULONGLONG               BaseAddress;
  14         ULONGLONG               Length;
  15         ULONG           Type;
  16         ULONG           Reserved;
  17 } BIOS_MEMORY_MAP, *PBIOS_MEMORY_MAP;
  18
  19 /* FIXME: Should be moved to NDK, and respective ACPI header files */
  20 typedef struct _ACPI_BIOS_DATA
  21 {
  22     PHYSICAL_ADDRESS RSDTAddress;
  23     ULONGLONG Count;
  24     BIOS_MEMORY_MAP MemoryMap[1]; /* Count of BIOS memory map entries */
  25 } ACPI_BIOS_DATA, *PACPI_BIOS_DATA;
  26
  27 #include <pshpack1.h>
  28 typedef struct
  29 {
  30         unsigned long   eax;
  31         unsigned long   ebx;
  32         unsigned long   ecx;
  33         unsigned long   edx;
  34
  35         unsigned long   esi;
  36         unsigned long   edi;
  37         unsigned long   ebp;
  38
  39         unsigned short  ds;
  40         unsigned short  es;
  41         unsigned short  fs;
  42         unsigned short  gs;
  43
  44         unsigned long   eflags;
  45
  46 } DWORDREGS;
  47
  48 typedef struct
  49 {
  50         unsigned short  ax, _upper_ax;
  51         unsigned short  bx, _upper_bx;
  52         unsigned short  cx, _upper_cx;
  53         unsigned short  dx, _upper_dx;
  54
  55         unsigned short  si, _upper_si;
  56         unsigned short  di, _upper_di;
  57         unsigned short  bp, _upper_bp;
  58
  59         unsigned short  ds;
  60         unsigned short  es;
  61         unsigned short  fs;
  62         unsigned short  gs;
  63
  64         unsigned short  flags, _upper_flags;
  65
  66 } WORDREGS;
  67
  68 typedef struct
  69 {
  70         unsigned char   al;
  71         unsigned char   ah;
  72         unsigned short  _upper_ax;
  73         unsigned char   bl;
  74         unsigned char   bh;
  75         unsigned short  _upper_bx;
  76         unsigned char   cl;
  77         unsigned char   ch;
  78         unsigned short  _upper_cx;
  79         unsigned char   dl;
  80         unsigned char   dh;
  81         unsigned short  _upper_dx;
  82
  83         unsigned short  si, _upper_si;
  84         unsigned short  di, _upper_di;
  85         unsigned short  bp, _upper_bp;
  86
  87         unsigned short  ds;
  88         unsigned short  es;
  89         unsigned short  fs;
  90         unsigned short  gs;
  91
  92         unsigned short  flags, _upper_flags;
  93
  94 } BYTEREGS;
  95
  96
  97 typedef union
  98 {
  99         DWORDREGS       x;
 100         DWORDREGS       d;
 101         WORDREGS        w;
 102         BYTEREGS        b;
 103 } REGS;
 104 #include <poppack.h>
 105
 106 // Int386()
 107 //
 108 // Real mode interrupt vector interface
 109 //
 110 // (E)FLAGS can *only* be returned by this function, not set.
 111 // Make sure all memory pointers are in SEG:OFFS format and
 112 // not linear addresses, unless the interrupt handler
 113 // specifically handles linear addresses.
 114 int             Int386(int ivec, REGS* in, REGS* out);
 115
 116 // This macro tests the Carry Flag
 117 // If CF is set then the call failed (usually)
 118 #define INT386_SUCCESS(regs)    ((regs.x.eflags & EFLAGS_CF) == 0)
 119
 120 void    EnableA20(void);
 121 VOID    ChainLoadBiosBootSectorCode(VOID);      // Implemented in boot.S
 122 VOID    SoftReboot(VOID);                                       // Implemented in boot.S
 123 VOID    DetectHardware(VOID);           // Implemented in hardware.c
 124
 125 #endif /* ! __ASM__ */
 126
 127 /* Layout of the REGS structure */
 128 #define REGS_EAX 0
 129 #define REGS_EBX 4
 130 #define REGS_ECX 8
 131 #define REGS_EDX 12
 132 #define REGS_ESI 16
 133 #define REGS_EDI 20
 134 #define REGS_EBP 24
 135 #define REGS_DS 28
 136 #define REGS_ES 30
 137 #define REGS_FS 32
 138 #define REGS_GS 34
 139 #define REGS_EFLAGS 36
 140 #define REGS_SIZE 40
 141