source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrintCfg.asm@ 213

Last change on this file since 213 was 200, checked in by gregli@…, 13 years ago

Added logic to skip scanning COM ports if a COM port was already found during the normal detection process, to avoid finding the same serial drive twice and preseting the OS with two drives which in reality point to the same physical file on the server. Also added logic to skip scanning for the slave serial drive if the master was not found. And various small optimizations.
File size: 4.1 KB
Line 
1; Project name : XTIDE Universal BIOS
2; Description : Functions for printing drive configuration
3; information on Boot Menu.
4
5; Section containing code
6SECTION .text
7
8;--------------------------------------------------------------------
9; Prints Hard Disk configuration for drive handled by our BIOS.
10; Cursor is set to configuration header string position.
11;
12; BootMenuPrintCfg_ForOurDrive
13; Parameters:
14; DS: Segment to DPT
15; Stack: Offset to DPT
16; Returns:
17; Nothing
18; Corrupts registers:
19; AX, BX, CX, DX, SI, DI
20;--------------------------------------------------------------------
21ALIGN JUMP_ALIGN
22BootMenuPrintCfg_ForOurDrive:
23 mov si, g_szCfgHeader
24 call BootMenuPrint_NullTerminatedStringFromCSSIandSetCF
25 pop di
26 eMOVZX ax, BYTE [di+DPT.bIdevarsOffset]
27 xchg si, ax ; CS:SI now points to IDEVARS
28 ; Fall to .PushAndFormatCfgString
29
30;--------------------------------------------------------------------
31; PushAndFormatCfgString
32; Parameters:
33; DS:DI: Ptr to DPT
34; CS:SI: Ptr to IDEVARS
35; Returns:
36; Nothing
37; Corrupts registers:
38; AX, DX, SI, DI
39;--------------------------------------------------------------------
40.PushAndFormatCfgString:
41 push bp
42 mov bp, sp
43 ; Fall to first push below
44
45;--------------------------------------------------------------------
46; PushAddressingMode
47; Parameters:
48; DS:DI: Ptr to DPT
49; CS:SI: Ptr to IDEVARS
50; Returns:
51; Nothing (jumps to next push below)
52; Corrupts registers:
53; AX, BX
54;--------------------------------------------------------------------
55.PushAddressingMode:
56 AccessDPT_GetUnshiftedAddressModeToALZF
57 ;;
58 ;; This multiply both shifts the addressing mode bits down to low order bits, and
59 ;; at the same time multiplies by the size of the string displacement. The result is in AH,
60 ;; with AL clear, and so we exchange AL and AH after the multiply for the final result.
61 ;;
62 mov bl,(1<<(8-ADDRESSING_MODE_FIELD_POSITION)) * g_szAddressingModes_Displacement
63 mul bl
64 xchg al,ah
65 add ax,g_szAddressingModes
66 push ax
67
68;--------------------------------------------------------------------
69; PushBlockMode
70; Parameters:
71; DS:DI: Ptr to DPT
72; CS:SI: Ptr to IDEVARS
73; Returns:
74; Nothing (falls to next push below)
75; Corrupts registers:
76; AX
77;--------------------------------------------------------------------
78.PushBlockMode:
79 mov ax, 1
80 test BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED
81 jz SHORT .PushBlockSizeFromAX
82 mov al, [di+DPT_ATA.bSetBlock]
83.PushBlockSizeFromAX:
84 push ax
85
86;--------------------------------------------------------------------
87; PushBusType
88; Parameters:
89; DS:DI: Ptr to DPT
90; CS:SI: Ptr to IDEVARS
91; Returns:
92; Nothing (jumps to next push below)
93; Corrupts registers:
94; AX, DX
95;--------------------------------------------------------------------
96.PushBusType:
97 mov al,g_szBusTypeValues_Displacement
98 mul BYTE [cs:si+IDEVARS.bDevice]
99
100 shr ax,1 ; divide by 2 since IDEVARS.bDevice is multiplied by 2
101
102 add ax,g_szBusTypeValues
103 push ax
104
105;--------------------------------------------------------------------
106; PushIRQ
107; Parameters:
108; DS:DI: Ptr to DPT
109; CS:SI: Ptr to IDEVARS
110; Returns:
111; Nothing (falls to next push below)
112; Corrupts registers:
113; AX, DX
114;--------------------------------------------------------------------
115.PushIRQ:
116 eMOVZX ax, BYTE [cs:si+IDEVARS.bIRQ]
117 push ax
118
119;--------------------------------------------------------------------
120; PushResetStatus
121; Parameters:
122; DS:DI: Ptr to DPT
123; CS:SI: Ptr to IDEVARS
124; Returns:
125; Nothing (falls to next push below)
126; Corrupts registers:
127; AX
128;--------------------------------------------------------------------
129.PushResetStatus:
130 mov al, [di+DPT.bFlagsHigh]
131 and ax, MASKH_DPT_RESET
132 push ax
133
134;--------------------------------------------------------------------
135; PrintValuesFromStack
136; Parameters:
137; Stack: All formatting parameters
138; Returns:
139; Nothing
140; Corrupts registers:
141; AX, SI, DI
142;--------------------------------------------------------------------
143.PrintValuesFromStack:
144 mov si, g_szCfgFormat
145 jmp BootPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay
146
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