source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Flash.asm@ 521

Last change on this file since 521 was 376, checked in by gregli@…, 12 years ago

WIDE checkin... Added copyright and license information to sorce files, as per the GPL instructions for usage.

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1; Project name : XTIDE Universal BIOS Configurator v2
2; Description : Functions for flashing the EEPROM.
3
4;
5; XTIDE Universal BIOS and Associated Tools
6; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
7;
8; This program is free software; you can redistribute it and/or modify
9; it under the terms of the GNU General Public License as published by
10; the Free Software Foundation; either version 2 of the License, or
11; (at your option) any later version.
12;
13; This program is distributed in the hope that it will be useful,
14; but WITHOUT ANY WARRANTY; without even the implied warranty of
15; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16; GNU General Public License for more details.
17; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
18;
19
20; Section containing code
21SECTION .text
22
23;--------------------------------------------------------------------
24; Flash_EepromWithFlashvarsInDSSI
25; Parameters:
26; DS:SI: Ptr to FLASHVARS
27; Returns:
28; FLASHVARS.flashResult
29; Corrupts registers:
30; All, including segments
31;--------------------------------------------------------------------
32ALIGN JUMP_ALIGN
33Flash_EepromWithFlashvarsInDSSI:
34 mov [si+FLASHVARS.wProgressUpdateParam], bp ; Store handle to progress DIALOG
35 mov bp, si ; Flashvars now in SS:BP
36 mov cx, [bp+FLASHVARS.wPagesToFlash]
37ALIGN JUMP_ALIGN
38.FlashNextPage:
39 call DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP
40 call Flash_SinglePageWithFlashvarsInSSBP
41 jc SHORT .PollingError
42 call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
43 jne SHORT .DataVerifyError
44
45 mov ax, [bp+FLASHVARS.wEepromPageSize]
46 add [bp+FLASHVARS.fpNextSourcePage], ax
47 add [bp+FLASHVARS.fpNextComparisonPage], ax
48 add [bp+FLASHVARS.fpNextDestinationPage], ax
49
50 loop .FlashNextPage
51%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
52%if FLASH_RESULT.success = 0 ; Just in case this should ever change
53 mov [bp+FLASHVARS.flashResult], cl
54%else
55 mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.success
56%endif
57%endif
58 ret
59
60.PollingError:
61 mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.PollingTimeoutError
62 ret
63.DataVerifyError:
64 mov BYTE [bp+FLASHVARS.flashResult], FLASH_RESULT.DataVerifyError
65 ret
66
67
68;--------------------------------------------------------------------
69; Flash_SinglePageWithFlashvarsInSSBP
70; Parameters:
71; SS:BP: Ptr to FLASHVARS
72; Returns:
73; CF: Set if polling timeout error
74; Cleared if page written successfully
75; Corrupts registers:
76; AX, BX, DX, SI, DI, DS, ES
77;--------------------------------------------------------------------
78ALIGN JUMP_ALIGN
79Flash_SinglePageWithFlashvarsInSSBP:
80 cld
81 call AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
82 je SHORT .NoNeedToFlashThePage ; CF cleared
83
84 push cx
85 call .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
86 mov cx, [bp+FLASHVARS.wEepromPageSize]
87 mov si, [bp+FLASHVARS.fpNextSourcePage]
88 les di, [bp+FLASHVARS.fpNextComparisonPage]
89 mov bx, [bp+FLASHVARS.fpNextDestinationPage]
90 call WriteAllChangedBytesFromPageToEeprom
91 pop cx
92.NoNeedToFlashThePage:
93 ret
94
95;--------------------------------------------------------------------
96; .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
97; Parameters:
98; SS:BP: Ptr to FLASHVARS
99; Returns:
100; DX: Ptr to SDP Command function
101; Corrupts registers:
102; BX, SI
103;--------------------------------------------------------------------
104ALIGN JUMP_ALIGN
105.GetSdpCommandFunctionToDXwithFlashvarsInSSBP:
106 eMOVZX bx, [bp+FLASHVARS.bEepromSdpCommand]
107 mov si, [cs:bx+.rgpSdpCommandToEepromTypeLookupTable]
108 mov bl, [bp+FLASHVARS.bEepromType]
109 mov dx, [cs:bx+si]
110 ret
111
112ALIGN WORD_ALIGN
113.rgpSdpCommandToEepromTypeLookupTable:
114 dw .rgfnFlashWithoutSDP ; SDP_COMMAND.none
115 dw .rgfnEnableSdpAndFlash ; SDP_COMMAND.enable
116 dw .rgfnDisableSdpAndFlash ; SDP_COMMAND.disable
117.rgfnFlashWithoutSDP: ; SDP_COMMAND.none
118 dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2816_2kiB
119 dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB
120 dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.2864_8kiB_MOD
121 dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28256_32kiB
122 dw DoNotWriteAnySdpCommand ; EEPROM_TYPE.28512_64kiB
123.rgfnEnableSdpAndFlash: ; SDP_COMMAND.enable
124 dw WriteSdpEnableCommandFor2816 ; EEPROM_TYPE.2816_2kiB
125 dw WriteSdpEnableCommandFor2864 ; EEPROM_TYPE.2864_8kiB
126 dw WriteSdpEnableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD
127 dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB
128 dw WriteSdpEnableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB
129.rgfnDisableSdpAndFlash: ; SDP_COMMAND.disable
130 dw WriteSdpDisableCommandFor2816 ; EEPROM_TYPE.2816_2kiB
131 dw WriteSdpDisableCommandFor2864 ; EEPROM_TYPE.2864_8kiB
132 dw WriteSdpDisableCommandFor2864mod ; EEPROM_TYPE.2864_8kiB_MOD
133 dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28256_32kiB
134 dw WriteSdpDisableCommandFor28256or28512 ; EEPROM_TYPE.28512_64kiB
135
136
137;--------------------------------------------------------------------
138; AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP
139; Parameters:
140; SS:BP: Ptr to FLASHVARS
141; Returns:
142; ZF: Set if pages are equal
143; Cleared if pages are not equal
144; Corrupts registers:
145; SI, DI
146;--------------------------------------------------------------------
147ALIGN JUMP_ALIGN
148AreSourceAndDestinationPagesEqualFromFlashvarsInSSBP:
149 push cx
150 mov cx, [bp+FLASHVARS.wEepromPageSize]
151 lds si, [bp+FLASHVARS.fpNextSourcePage]
152 les di, [bp+FLASHVARS.fpNextDestinationPage]
153 repe cmpsb
154 pop cx
155 ret
156
157
158;--------------------------------------------------------------------
159; ENABLE_SDP
160; Parameters:
161; %1: Offset for first command byte
162; %2: Offset for second command byte
163; DS: Segment to beginning of EEPROM
164; Returns:
165; Nothing
166; Corrupts registers:
167; Nothing
168;--------------------------------------------------------------------
169%macro ENABLE_SDP 2
170 mov BYTE [%1], 0AAh
171 mov BYTE [%2], 55h
172 mov BYTE [%1], 0A0h
173%endmacro
174
175;--------------------------------------------------------------------
176; DISABLE_SDP
177; Parameters:
178; %1: Offset for first command byte
179; %2: Offset for second command byte
180; DS: Segment to beginning of EEPROM
181; Returns:
182; Nothing
183; Corrupts registers:
184; Nothing
185;--------------------------------------------------------------------
186%macro DISABLE_SDP 2
187 mov BYTE [%1], 0AAh
188 mov BYTE [%2], 55h
189 mov BYTE [%1], 80h
190 mov BYTE [%1], 0AAh
191 mov BYTE [%2], 55h
192 mov BYTE [%1], 20h
193%endmacro
194
195;--------------------------------------------------------------------
196; SDP Command Functions
197; Parameters:
198; DS: Segment to beginning of EEPROM
199; Returns:
200; Nothing but jumps to WriteActualDataByteAfterSdpCommand
201; Corrupts registers:
202; Nothing
203;--------------------------------------------------------------------
204ALIGN JUMP_ALIGN
205WriteSdpEnableCommandFor2816:
206 ENABLE_SDP 555h, 2AAh
207 jmp ReturnFromSdpCommand
208
209ALIGN JUMP_ALIGN
210WriteSdpEnableCommandFor2864:
211 ENABLE_SDP 1555h, 0AAAh
212 jmp ReturnFromSdpCommand
213
214ALIGN JUMP_ALIGN
215WriteSdpEnableCommandFor2864mod:
216 ENABLE_SDP 155Ch, 0AA3h
217 jmp ReturnFromSdpCommand
218
219ALIGN JUMP_ALIGN
220WriteSdpEnableCommandFor28256or28512:
221 ENABLE_SDP 5555h, 2AAAh
222 jmp ReturnFromSdpCommand
223
224
225ALIGN JUMP_ALIGN
226WriteSdpDisableCommandFor2816:
227 DISABLE_SDP 555h, 2AAh
228 jmp SHORT ReturnFromSdpCommand
229
230ALIGN JUMP_ALIGN
231WriteSdpDisableCommandFor2864:
232 DISABLE_SDP 1555h, 0AAAh
233 jmp SHORT ReturnFromSdpCommand
234
235ALIGN JUMP_ALIGN
236WriteSdpDisableCommandFor2864mod:
237 DISABLE_SDP 155Ch, 0AA3h
238 jmp SHORT ReturnFromSdpCommand
239
240ALIGN JUMP_ALIGN
241WriteSdpDisableCommandFor28256or28512:
242 DISABLE_SDP 5555h, 2AAAh
243DoNotWriteAnySdpCommand:
244 jmp SHORT ReturnFromSdpCommand
245
246
247;--------------------------------------------------------------------
248; WriteNextChangedByteFromPageToEeprom
249; Parameters:
250; CX: Number of bytes left to write
251; DX: Offset to SDP command function
252; BX: Offset to next destination byte
253; SI: Offset to next source byte
254; ES:DI: Ptr to next comparison byte
255; SS:BP: Ptr to FLASHVARS
256; Returns:
257; CF: Set if polling timeout error
258; Cleared if page written successfully
259; Corrupts registers:
260; AX, BX, CX, SI, DI, DS, ES
261;--------------------------------------------------------------------
262ALIGN JUMP_ALIGN
263WriteAllChangedBytesFromPageToEeprom:
264 mov ax, [bp+FLASHVARS.fpNextSourcePage+2] ; AX = Source segment
265 mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS = EEPROM segment
266 cli ; Disable interrupts
267 jmp dx ; Write SDP command (once to the beginning of page)
268ALIGN JUMP_ALIGN
269ReturnFromSdpCommand:
270 mov ds, ax ; DS:SI now points to source byte
271
272ALIGN JUMP_ALIGN
273.WriteActualDataByteAfterSdpCommand:
274 lodsb ; Load source byte to AL
275 scasb ; Compare source byte to comparison byte
276 je SHORT .NoChangesForThisByte
277
278 mov ds, [bp+FLASHVARS.fpNextDestinationPage+2] ; DS:BX now points to EEPROM
279 mov [bx], al ; Write byte to EEPROM
280 mov ds, [bp+FLASHVARS.fpNextSourcePage+2] ; Restore DS
281 mov [bp+FLASHVARS.wLastOffsetWritten], bx
282 mov [bp+FLASHVARS.bLastByteWritten], al
283
284ALIGN JUMP_ALIGN
285.NoChangesForThisByte:
286 inc bx ; Increment destination offset
287 loop .WriteActualDataByteAfterSdpCommand
288 sti ; Enable interrupts
289 ; Fall to WaitUntilEepromPageWriteHasCompleted
290
291
292;--------------------------------------------------------------------
293; WaitUntilEepromPageWriteHasCompleted
294; Parameters:
295; SS:BP: Ptr to FLASHVARS
296; Returns:
297; CF: Set if polling timeout error
298; Cleared if page written successfully
299; Corrupts registers:
300; AX, BX, DI, DS, ES
301;--------------------------------------------------------------------
302ALIGN JUMP_ALIGN
303WaitUntilEepromPageWriteHasCompleted:
304 call .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP
305 mov es, [bp+FLASHVARS.fpNextDestinationPage+2]
306 mov di, [bp+FLASHVARS.wLastOffsetWritten]
307ALIGN JUMP_ALIGN
308.PollEeprom:
309 call .HasWriteCycleCompleted
310 je SHORT .PageWriteCompleted ; CF cleared
311 call TimerTicks_GetTimeoutTicksLeftToAXfromDSBX
312 jnc SHORT .PollEeprom
313ALIGN JUMP_ALIGN
314.PageWriteCompleted:
315 ret
316
317;--------------------------------------------------------------------
318; .InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP
319; Parameters:
320; SS:BP: Ptr to FLASHVARS
321; Returns:
322; DS:BX: Ptr to timeout counter variable
323; Corrupts registers:
324; AX
325;--------------------------------------------------------------------
326ALIGN JUMP_ALIGN
327.InitializeTimeoutCounterForEepromPollingWithFlashvarsInSSBP:
328 push ss
329 pop ds
330 lea bx, [bp+FLASHVARS.wTimeoutCounter]
331 mov ax, EEPROM_POLLING_TIMEOUT_TICKS
332 jmp TimerTicks_InitializeTimeoutFromAX
333
334;--------------------------------------------------------------------
335; .HasWriteCycleCompleted
336; Parameters:
337; ES:DI: Ptr to last written byte in EEPROM
338; SS:BP: Ptr to FLASHVARS
339; Returns:
340; ZF: Set if write cycle has completed
341; Cleared if write cycle in progress
342; Corrupts registers:
343; AX
344;--------------------------------------------------------------------
345ALIGN JUMP_ALIGN
346.HasWriteCycleCompleted:
347 mov ah, [es:di] ; Load byte from EEPROM
348 mov al, [bp+FLASHVARS.bLastByteWritten]
349 and ax, 8080h ; Clear all but bit 7 from both bytes
350 cmp al, ah ; Set ZF if high bits are the same
351 ret
352
353
354;--------------------------------------------------------------------
355; DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP
356; Parameters:
357; CX: Number of pages left to flash
358; SS:BP: Ptr to FLASHVARS
359; Returns:
360; Nothing
361; Corrupts registers:
362; AX, DI
363;--------------------------------------------------------------------
364ALIGN JUMP_ALIGN
365DisplayFlashProgressWithPagesLeftInCXandFlashvarsInSSBP:
366 push bp
367
368 mov ax, [bp+FLASHVARS.wPagesToFlash]
369 sub ax, cx
370 mov bp, [bp+FLASHVARS.wProgressUpdateParam] ; BP now has MENU handle
371 CALL_MENU_LIBRARY SetProgressValueFromAX
372
373 pop bp
374 ret
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