amd64/bareMetalOS-0.5.3/os/sysvar.asm

   1 ; =============================================================================
   2 ; BareMetal -- a 64-bit OS written in Assembly for x86-64 systems
   3 ; Copyright (C) 2008-2012 Return Infinity -- see LICENSE.TXT
   4 ;
   5 ; System Variables
   6 ; =============================================================================
   7
   8 align 16
   9 db 'DEBUG: SYSVAR   '
  10 align 16
  11
  12 ; Constants
  13 hextable:               db '0123456789ABCDEF'
  14
  15 ; Strings
  16 system_status_header:   db 'BareMetal v0.5.3', 0
  17 readymsg:               db 'BareMetal is ready.', 0
  18 networkmsg:             db 'Network Address: ', 0
  19 prompt:                 db '> ', 0
  20 space:                  db ' ', 0
  21 newline:                db 13, 0
  22 appextension:           db '.APP', 0
  23 memory_message:         db 'Not enough system memory for CPU stacks! System halted.', 0
  24 startupapp:             db 'startup.app', 0
  25
  26 ; Memory addresses
  27 hdbuffer0:              equ 0x0000000000070000  ; 32768 bytes   0x070000 -> 0x077FFF
  28 hdbuffer1:              equ 0x0000000000078000  ; 32768 bytes   0x078000 -> 0x07FFFF
  29 cli_temp_string:        equ 0x0000000000080000  ; 1024 bytes    0x080000 -> 0x0803FF
  30 os_temp_string:         equ 0x0000000000080400  ; 1024 bytes    0x080400 -> 0x0807FF
  31 secbuffer0:             equ 0x0000000000080800  ; 512 bytes     0x080800 -> 0x0809FF
  32 secbuffer1:             equ 0x0000000000080A00  ; 512 bytes     0x080A00 -> 0x080BFF
  33 os_args:                equ 0x0000000000080C00
  34 os_KernelStart:         equ 0x0000000000100000  ; 65536 bytes   0x100000 -> 0x10FFFF - Location of Kernel
  35 os_SystemVariables:     equ 0x0000000000110000  ; 65536 bytes   0x110000 -> 0x11FFFF - Location of System Variables
  36 os_MemoryMap:           equ 0x0000000000120000  ; 131072 bytes  0x120000 -> 0x13FFFF - Location of Memory Map - Room to map 256 GiB with 2 MiB pages
  37 os_EthernetBuffer:      equ 0x0000000000140000  ; 262144 bytes  0x140000 -> 0x17FFFF - Location of Ethernet RX Ring Buffer - Room for 170 packets
  38 os_screen:              equ 0x0000000000180000  ; 4096 bytes    80x25x2 = 4000
  39 os_ethernet_rx_buffer:  equ 0x00000000001C0000
  40 os_eth_rx_buffer:       equ 0x00000000001C8000
  41 os_ethernet_tx_buffer:  equ 0x00000000001D0000
  42 os_eth_tx_buffer:       equ 0x00000000001D8000
  43 os_eth_temp_buffer:     equ 0x00000000001E0000
  44 cpustatus:              equ 0x00000000001FEF00  ; Location of CPU status data (256 bytes) Bit 0 = Avaiable, Bit 1 = Free/Busy
  45 cpuqueue:               equ 0x00000000001FF000  ; Location of CPU Queue. Each queue item is 16 bytes. (4KiB before the 2MiB mark, Room for 256 entries)
  46 programlocation:        equ 0x0000000000200000  ; Location in memory where programs are loaded (the start of 2MiB)
  47
  48 ; DQ - Starting at offset 0, increments by 0x8
  49 os_LocalAPICAddress:    equ os_SystemVariables + 0x00
  50 os_IOAPICAddress:       equ os_SystemVariables + 0x08
  51 os_ClockCounter:        equ os_SystemVariables + 0x10
  52 os_RandomSeed:          equ os_SystemVariables + 0x18   ; Seed for RNG
  53 screen_cursor_offset:   equ os_SystemVariables + 0x20
  54 hd1_maxlba:             equ os_SystemVariables + 0x28   ; 64-bit value since at most it will hold a 48-bit value
  55 os_StackBase:           equ os_SystemVariables + 0x30
  56 os_net_transmit:        equ os_SystemVariables + 0x38
  57 os_net_poll:            equ os_SystemVariables + 0x40
  58 os_net_ack_int:         equ os_SystemVariables + 0x48
  59 os_NetIOBaseMem:        equ os_SystemVariables + 0x50
  60 os_NetMAC:              equ os_SystemVariables + 0x58
  61
  62 ; DD - Starting at offset 128, increments by 4
  63 cpu_speed:              equ os_SystemVariables + 128    ; in MHz
  64 hd1_size:               equ os_SystemVariables + 132    ; Size in MiB
  65 ip:                     equ os_SystemVariables + 136    ; IPv4 Address
  66 sn:                     equ os_SystemVariables + 140    ; IPv4 Subnet
  67 gw:                     equ os_SystemVariables + 144    ; IPv4 Gateway
  68
  69 ; DW - Starting at offset 256, increments by 2
  70 os_MemAmount:           equ os_SystemVariables + 256    ; in MiB
  71 os_NumCores:            equ os_SystemVariables + 258
  72 cpuqueuestart:          equ os_SystemVariables + 260
  73 cpuqueuefinish:         equ os_SystemVariables + 262
  74 os_QueueLen:            equ os_SystemVariables + 264
  75 os_QueueLock:           equ os_SystemVariables + 266    ; Bit 0 clear for unlocked, set for locked.
  76 os_NetIOAddress:        equ os_SystemVariables + 268
  77 os_EthernetBusyLock:    equ os_SystemVariables + 270
  78
  79 ; DB - Starting at offset 384, increments by 1
  80 cursorx:                equ os_SystemVariables + 384    ; cursor row location
  81 cursory:                equ os_SystemVariables + 385    ; cursor column location
  82 scancode:               equ os_SystemVariables + 386
  83 key:                    equ os_SystemVariables + 387
  84 key_shift:              equ os_SystemVariables + 388
  85 screen_cursor_x:        equ os_SystemVariables + 389
  86 screen_cursor_y:        equ os_SystemVariables + 390
  87 hd1_enable:             equ os_SystemVariables + 391    ; 1 if the drive is there and enabled
  88 hd1_lba48:              equ os_SystemVariables + 392    ; 1 if LBA48 is allowed
  89 os_PCIEnabled:          equ os_SystemVariables + 393    ; 1 if PCI is detected
  90 os_NetEnabled:          equ os_SystemVariables + 394    ; 1 if a supported network card was enabled
  91 os_NetIRQ:              equ os_SystemVariables + 395    ; Set to Interrupt line that NIC is connected to
  92 os_NetActivity_TX:      equ os_SystemVariables + 396
  93 os_NetActivity_RX:      equ os_SystemVariables + 397
  94 os_EthernetBuffer_C1:   equ os_SystemVariables + 398    ; Counter 1 for the Ethernet RX Ring Buffer
  95 os_EthernetBuffer_C2:   equ os_SystemVariables + 399    ; Counter 2 for the Ethernet RX Ring Buffer
  96
  97
  98 cpuqueuemax:            dw 256
  99 screen_rows:            db 25 ; x
 100 screen_cols:            db 80 ; y
 101 os_show_sysstatus:      db 1
 102
 103 ; Function variables
 104 os_debug_dump_reg_stage:        db 0x00
 105
 106 ; File System
 107 fat16_FatStart:                 dd 0x00000000
 108 fat16_TotalSectors:             dd 0x00000000
 109 fat16_DataStart:                dd 0x00000000
 110 fat16_RootStart:                dd 0x00000000
 111 fat16_PartitionOffset:          dd 0x00000000
 112 fat16_ReservedSectors:          dw 0x0000
 113 fat16_RootDirEnts:              dw 0x0000
 114 fat16_SectorsPerFat:            dw 0x0000
 115 fat16_BytesPerSector:           dw 0x0000
 116 fat16_SectorsPerCluster:        db 0x00
 117 fat16_Fats:                     db 0x00
 118
 119
 120 keylayoutlower:
 121 db 0x00, 0, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0x0e, 0, 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', 0x1c, 0, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', 0, '`', 0, 0, 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 0, 0, 0, ' ', 0
 122 keylayoutupper:
 123 db 0x00, 0, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 0x0e, 0, 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', 0x1c, 0, 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', 0, '~', 0, 0, 'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', 0, 0, 0, ' ', 0
 124 ; 0e = backspace
 125 ; 1c = enter
 126
 127 palette:                ; These colors are in RGB format. Each color byte is actually 6 bits (0x00 - 0x3F)
 128 db 0x00, 0x00, 0x00     ;  0 Black
 129 db 0x33, 0x00, 0x00     ;  1 Red
 130 db 0x0F, 0x26, 0x01     ;  2 Green
 131 db 0x0D, 0x19, 0x29     ;  3 Blue
 132 db 0x31, 0x28, 0x00     ;  4 Orange
 133 db 0x1D, 0x14, 0x1E     ;  5 Purple
 134 db 0x01, 0x26, 0x26     ;  6 Teal
 135 db 0x2A, 0x2A, 0x2A     ;  7 Light Gray
 136 db 0x15, 0x15, 0x15     ;  8 Dark Gray
 137 db 0x3B, 0x0A, 0x0A     ;  9 Bright Red
 138 db 0x22, 0x38, 0x0D     ; 10 Bright Green
 139 db 0x1C, 0x27, 0x33     ; 11 Bright Blue
 140 db 0x3F, 0x3A, 0x13     ; 12 Yellow
 141 db 0x2B, 0x1F, 0x2A     ; 13 Bright Purple
 142 db 0x0D, 0x38, 0x38     ; 14 Bright Teal
 143 db 0x3F, 0x3F, 0x3F     ; 15 White
 144
 145
 146 os_debug_dump_reg_string00:     db '  A:', 0
 147 os_debug_dump_reg_string01:     db '  B:', 0
 148 os_debug_dump_reg_string02:     db '  C:', 0
 149 os_debug_dump_reg_string03:     db '  D:', 0
 150 os_debug_dump_reg_string04:     db ' SI:', 0
 151 os_debug_dump_reg_string05:     db ' DI:', 0
 152 os_debug_dump_reg_string06:     db ' BP:', 0
 153 os_debug_dump_reg_string07:     db ' SP:', 0
 154 os_debug_dump_reg_string08:     db '  8:', 0
 155 os_debug_dump_reg_string09:     db '  9:', 0
 156 os_debug_dump_reg_string0A:     db ' 10:', 0
 157 os_debug_dump_reg_string0B:     db ' 11:', 0
 158 os_debug_dump_reg_string0C:     db ' 12:', 0
 159 os_debug_dump_reg_string0D:     db ' 13:', 0
 160 os_debug_dump_reg_string0E:     db ' 14:', 0
 161 os_debug_dump_reg_string0F:     db ' 15:', 0
 162 os_debug_dump_reg_string10:     db ' RF:', 0
 163
 164 os_debug_dump_flag_string0:     db ' C:', 0
 165 os_debug_dump_flag_string1:     db ' Z:', 0
 166 os_debug_dump_flag_string2:     db ' S:', 0
 167 os_debug_dump_flag_string3:     db ' D:', 0
 168 os_debug_dump_flag_string4:     db ' O:', 0
 169
 170
 171 cli_command_string:     times 14 db 0
 172 cli_args:               db 0
 173
 174 align 16
 175 this_is_the_end:        db 'This is the end.'
 176
 177 ;------------------------------------------------------------------------------
 178
 179 SYS64_CODE_SEL  equ 8           ; defined by Pure64
 180
 181 ; =============================================================================
 182 ; EOF