mirror of
https://github.com/ApfelTeeSaft/reactos.git
synced 2026-09-02 04:13:34 +00:00
[FREELDR]
- Use new relmode code for PnpBios stuff svn path=/trunk/; revision=52292
This commit is contained in:
Timo Kreuzer
@@ -28,11 +28,6 @@
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*
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* RETURNS:
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*/
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_pnp_bios_entry_point:
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.long 0
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_pnp_bios_data_segment:
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.word 0
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PUBLIC _PnpBiosSupported
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_PnpBiosSupported:
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@@ -82,11 +77,11 @@ pnp_loop:
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mov ax, [esi + 15]
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shl eax, 16
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mov ax, [esi + 0x0D]
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mov _pnp_bios_entry_point, eax
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mov [BSS_PnpBiosEntryPoint], eax
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/* Store bios data segment */
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mov ax, [esi + 0x1B]
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mov _pnp_bios_data_segment, ax
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mov word ptr ds:[BSS_PnpBiosDataSegment], ax
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pnp_not_found:
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mov eax, edi
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@@ -104,13 +99,6 @@ pnp_not_found:
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*
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* RETURNS:
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*/
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_pnp_result:
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.long 0
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_pnp_node_size:
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.word 0
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_pnp_node_count:
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.word 0
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PUBLIC _PnpBiosGetDeviceNodeCount
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_PnpBiosGetDeviceNodeCount:
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@@ -120,39 +108,16 @@ _PnpBiosGetDeviceNodeCount:
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pusha
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push es
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call switch_to_real
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.code16
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mov ax, word ptr [_pnp_bios_data_segment]
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push ax
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push cs
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mov ax, offset _pnp_node_size
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push ax
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push cs
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mov ax, offset _pnp_node_count
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push ax
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push 0
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call dword ptr [_pnp_bios_entry_point]
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add sp, 12
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movzx ecx, ax
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mov _pnp_result, ecx
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call switch_to_prot
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.code32
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mov bx, FNID_PnpBiosGetDeviceNodeCount
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call i386CallRealMode
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mov esi, [ebp + 8]
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mov ax, _pnp_node_size
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mov ax, [BSS_PnpNodeSize]
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movzx ecx, ax
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mov [esi], ecx
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mov esi, [ebp + 12]
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mov ax, _pnp_node_count
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mov ax, [BSS_PnpNodeCount]
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movzx ecx, ax
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mov [esi], eax
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@@ -162,7 +127,7 @@ _PnpBiosGetDeviceNodeCount:
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mov esp, ebp
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pop ebp
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mov eax, _pnp_result
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mov eax, dword ptr [BSS_PnpResult]
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ret
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@@ -172,14 +137,6 @@ _PnpBiosGetDeviceNodeCount:
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*
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* RETURNS:
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*/
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_pnp_buffer_segment:
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.word 0
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_pnp_buffer_offset:
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.word 0
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_pnp_node_number:
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.byte 0
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EXTERN(_PnpBiosGetDeviceNode)
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.code32
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@@ -192,54 +149,23 @@ EXTERN(_PnpBiosGetDeviceNode)
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/* get current node number */
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mov esi, [ebp + 8]
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mov al, [esi]
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mov _pnp_node_number, al
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mov [BSS_PnpNodeNumber], al
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/* convert pointer to node buffer to segment/offset */
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mov eax, [ebp + 12]
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shr eax, 4
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and eax, 0xf000
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mov _pnp_buffer_segment, ax
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mov word ptr [BSS_PnpBiosBufferSegment], ax
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mov eax, [ebp + 12]
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and eax, 0xffff
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mov _pnp_buffer_offset, ax
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mov [BSS_PnpBiosBufferOffset], ax
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call switch_to_real
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.code16
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/* push bios segment */
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mov ax, word ptr [_pnp_bios_data_segment]
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push ax
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/* push control flag */
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push 1
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/* push pointer to node buffer (segment/offset) */
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mov ax, word ptr [_pnp_buffer_segment]
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push ax
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mov ax, word ptr [_pnp_buffer_offset]
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push ax
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/* push pointer to node number (segment/offset) */
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push cs
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mov ax, offset _pnp_node_number
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push ax
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/* push function number */
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push 1
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/* call entry point */
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call dword ptr [_pnp_bios_entry_point]
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add sp, 14
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movzx ecx, ax
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mov _pnp_result, ecx
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call switch_to_prot
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.code32
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mov bx, FNID_PnpBiosGetDeviceNode
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call i386CallRealMode
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/* update node number */
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mov esi, [ebp + 8]
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mov al, _pnp_node_number
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mov al, [BSS_PnpNodeNumber]
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mov [esi], al
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pop es
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@@ -248,7 +174,7 @@ EXTERN(_PnpBiosGetDeviceNode)
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mov esp, ebp
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pop ebp
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mov eax, _pnp_result
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mov eax, [BSS_PnpResult]
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ret
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@@ -123,11 +123,15 @@ pm_offset:
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nop
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// FIXME: use ljmp16 PMODE_CS:inpmode + hexed 32bit jump
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callback_table:
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.word Int386
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.word SoftReboot
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.word ChainLoadBiosBootSectorCode
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.word PxeCallApi
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.word PnpBiosGetDeviceNodeCount
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.word PnpBiosGetDeviceNode
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/* 16-bit stack pointer */
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@@ -180,6 +184,8 @@ rmode_idtptr:
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//.org 1024
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#include "int386.inc"
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#include "pxe.inc"
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#include "pnp.inc"
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#include "helpers.inc"
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.org (FREELDR_PE_BASE - FREELDR_BASE)
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@@ -0,0 +1,58 @@
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PnpBiosGetDeviceNodeCount:
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mov ax, word ptr [BSS_PnpBiosDataSegment]
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push ax
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push cs
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mov ax, BSS_PnpNodeSize
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push ax
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push cs
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mov ax, BSS_PnpNodeCount
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push ax
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push 0
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call dword ptr [BSS_PnpBiosEntryPoint]
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add sp, 12
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movzx ecx, ax
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mov dword ptr [BSS_PnpResult], ecx
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ret
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PnpBiosGetDeviceNode:
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/* push bios segment */
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mov ax, word ptr [BSS_PnpBiosDataSegment]
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push ax
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/* push control flag */
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push 1
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/* push pointer to node buffer (segment/offset) */
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mov ax, word ptr [BSS_PnpBiosBufferSegment]
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push ax
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mov ax, word ptr [BSS_PnpBiosBufferOffset]
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push ax
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/* push pointer to node number (segment/offset) */
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push cs
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mov ax, BSS_PnpNodeNumber
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push ax
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/* push function number */
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push 1
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/* call entry point */
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call dword ptr [BSS_PnpBiosEntryPoint]
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add sp, 14
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movzx ecx, ax
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mov [BSS_PnpResult], ecx
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ret
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@@ -0,0 +1,33 @@
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/*
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* FreeLoader
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* Copyright (C) 2011 Hervé Poussineau
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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PxeCallApi:
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mov ax, [BSS_PxeBufferSegment]
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push ax
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mov ax, [BSS_PxeBufferOffset]
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push ax
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mov ax, [BSS_PxeFunction]
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push ax
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call dword ptr [BSS_PxeEntryPoint]
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add esp, 6
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mov [BSS_PxeResult], ax
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ret
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@@ -71,15 +71,6 @@ VOID DetectApmBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber);
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/* hwpci.c */
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VOID DetectPciBios(PCONFIGURATION_COMPONENT_DATA SystemKey, ULONG *BusNumber);
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/* i386cpu.S */
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ULONG CpuidSupported(VOID);
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VOID GetCpuid(ULONG Level,
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ULONG *eax,
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ULONG *ebx,
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ULONG *ecx,
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ULONG *edx);
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ULONGLONG RDTSC(VOID);
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/* i386pnp.S */
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ULONG_PTR PnpBiosSupported(VOID);
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ULONG PnpBiosGetDeviceNodeCount(ULONG *NodeSize,
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@@ -22,16 +22,24 @@
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#define DISKREADBUFFER_SIZE 512
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/* These addresses specify the realmode "BSS section" layout */
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#define BSS_RealModeEntry (BSS_START + 0)
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#define BSS_CallbackAddress (BSS_START + 4)
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#define BSS_CallbackReturn (BSS_START + 8)
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#define BSS_RegisterSet (BSS_START + 16) /* size = 36 */
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#define BSS_IntVector (BSS_START + 52)
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#define BSS_PxeEntryPoint (BSS_START + 56)
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#define BSS_PxeBufferSegment (BSS_START + 60)
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#define BSS_PxeBufferOffset (BSS_START + 64)
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#define BSS_PxeFunction (BSS_START + 68)
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#define BSS_PxeResult (BSS_START + 72)
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#define BSS_RealModeEntry (BSS_START + 0)
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#define BSS_CallbackAddress (BSS_START + 4)
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#define BSS_CallbackReturn (BSS_START + 8)
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#define BSS_RegisterSet (BSS_START + 16) /* size = 36 */
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#define BSS_IntVector (BSS_START + 52)
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#define BSS_PxeEntryPoint (BSS_START + 56)
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#define BSS_PxeBufferSegment (BSS_START + 60)
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#define BSS_PxeBufferOffset (BSS_START + 64)
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#define BSS_PxeFunction (BSS_START + 68)
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#define BSS_PxeResult (BSS_START + 72)
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#define BSS_PnpBiosEntryPoint (BSS_START + 76)
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#define BSS_PnpBiosDataSegment (BSS_START + 80)
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#define BSS_PnpBiosBufferSegment (BSS_START + 84)
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#define BSS_PnpBiosBufferOffset (BSS_START + 88)
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#define BSS_PnpNodeSize (BSS_START + 92)
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#define BSS_PnpNodeCount (BSS_START + 96)
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#define BSS_PnpNodeNumber (BSS_START + 100)
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#define BSS_PnpResult (BSS_START + 104)
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/* Realmode function IDs */
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@@ -39,6 +47,8 @@
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#define FNID_SoftReboot 1
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#define FNID_ChainLoadBiosBootSectorCode 2
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#define FNID_PxeCallApi 3
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#define FNID_PnpBiosGetDeviceNodeCount 4
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#define FNID_PnpBiosGetDeviceNode 5
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/* Layout of the REGS structure */
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#define REGS_EAX 0
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