diff options
Diffstat (limited to 'src/mainboard/momentum/apache/timerspeed.S')
| -rwxr-xr-x | src/mainboard/momentum/apache/timerspeed.S | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/src/mainboard/momentum/apache/timerspeed.S b/src/mainboard/momentum/apache/timerspeed.S deleted file mode 100755 index 483a2aa344..0000000000 --- a/src/mainboard/momentum/apache/timerspeed.S +++ /dev/null @@ -1,378 +0,0 @@ -#include <ppc970.h>
-
-/*----------------------------------------------------------------------------+
-| Cycle counts ((1/ 9600)* 10) / (1/speed)) - 2%.
-+----------------------------------------------------------------------------*/
-#define SPEED_6_25 (0x0000196E- (65* 2))
-#define SPEED_7_159 (0x00001D21- (74* 2))
-#define SPEED_8_33 (0x000021E5- (86* 2))
-#define SPEED_10_4 (0x00002A51- (108* 2))
-#define SPEED_14_318 (0x00003A42- (149* 2))
-#define SPEED_16_66 (0x000043D0- (173* 2))
-#define SPEED_25 (0x000065B9- (260* 2))
-#define SPEED_33 (0x000087A2- (347* 2))
-#define SPEED_40 (0x0000A2C2- (416* 2))
-#define SPEED_50 (0x0000CB73- (520* 2))
-#define SPEED_66 (0x00010C8E- (687* 2))
-#define SPEED_80 (0x00014585- (833* 2))
-#define SPEED_100 (0x000196E6- (1041* 2))
-#define SPEED_125 (0x0001FCA0- (1302* 2))
-#define SPEED_133 (0x00021D2D- (1385* 2))
-#define SPEED_150 (0x0002625A- (1562* 2))
-#define SPEED_166 (0x0002A374- (1729* 2))
-#define SPEED_175 (0x0002C813- (1822* 2))
-#define SPEED_200 (0x00032DCD- (2093* 2))
-#define SPEED_225 (0x00039387- (2343* 2))
-#define SPEED_250 (0x0003F940- (2604* 2))
-#define SPEED_275 (0x00045EFA- (2864* 2))
-#define SPEED_300 (0x0004C4B4- (3125* 2))
-#define SPEED_3375 (0x00055D4A- (3515* 2))
-#define SPEED_375 (0x0005F5E1- (3906* 2))
-#define SPEED_400 (0x00065B9A- (4166* 2))
-#define SPEED_433 (0x0006E1E1- (4510* 2))
-#define SPEED_466 (0x00076828- (4854* 2))
-#define SPEED_500 (0x0007F281- (5208* 2))
-
-/*----------------------------------------------------------------------------+
-| Timebase_speed_calc
-+----------------------------------------------------------------------------*/
- function_prolog(timebase_speed_calc)
- mfmsr r10
- rlwinm r11,r10,0,17,15
- mtmsrd r11,1
- isync
- /*--------------------------------------------------------------------+
- | Make sure that all the characters in the transmit buffer are sent.
- +--------------------------------------------------------------------*/
-..sent: lbz r6,asyncLSR(r3)
- andi. r6,r6,0x0060
- cmpi cr0,1,r6,0x0060
- bne ..sent
- /*--------------------------------------------------------------------+
- | Store current serial port settings in r11, r12.
- | r11 BH (baud high), BL (baud low), LCR
- | r12 MCR, IER, FCR
- +--------------------------------------------------------------------*/
- lbz r4,asyncLCR(r3)
- ori r11,r4,0x0000
- lbz r4,asyncFCR(r3)
- ori r12,r4,0x0000
- lbz r4,asyncIER(r3)
- rlwimi r12,r4,8,16,23
- lbz r4,asyncMCR(r3)
- rlwimi r12,r4,16,8,15
- /*--------------------------------------------------------------------+
- | Store BH and BL and program new baud rate.
- +--------------------------------------------------------------------*/
- addi r4,r0,0x80
- stb r4,asyncLCR(r3)
- lbz r4,asyncDLABMsb(r3)
- rlwimi r11,r4,16,8,15
- addi r4,r0,DIV_HIGH_9600
- stb r4,asyncDLABMsb(r3)
- lbz r4,asyncDLABLsb(r3)
- rlwimi r11,r4,8,16,23
- addi r4,r0,DIV_LOW_9600
- stb r4,asyncDLABLsb(r3)
- addi r4,r0,0x03
- stb r4,asyncLCR(r3)
- /*--------------------------------------------------------------------+
- | Put the serial port in loop-back mode.
- +--------------------------------------------------------------------*/
- addi r4,r0,0x00
- stb r4,asyncFCR(r3)
- stb r4,asyncIER(r3)
- addi r4,r0,0x10
- stb r4,asyncMCR(r3)
- lbz r4,asyncRxBuffer(r3)
- addi r4,r0,0x0041
- /*--------------------------------------------------------------------+
- | Again make sure there are no characters in transmit buffer.
- +--------------------------------------------------------------------*/
- addi r5,r0,0
-..again:lbz r6,asyncLSR(r3)
- andi. r6,r6,0x0060
- cmpi cr0,1,r6,0x0060
- bne ..again
- /*--------------------------------------------------------------------+
- | Take a snapshot of the timebase.
- +--------------------------------------------------------------------*/
- mfspr r7,tblr
- /*--------------------------------------------------------------------+
- | Send a character while in loopback mode. This will be done twice.
- | Once to get the instuctions into I-cache, the second time for the
- | real measurement.
- +--------------------------------------------------------------------*/
- stb r4,asyncTxBuffer(r3)
-..spnlp:lbz r6,asyncLSR(r3)
- andi. r6,r6,0x01
- beq ..spnlp
- mfspr r9,tblr
- /*--------------------------------------------------------------------+
- | Perform subtraction to determine how many timebase ticks it took
- | to transmit the character.
- +--------------------------------------------------------------------*/
- subfc r9,r7,r9
- /*--------------------------------------------------------------------+
- | Consume the character sent in loopback mode.
- +--------------------------------------------------------------------*/
- lbz r4,asyncRxBuffer(r3)
- eieio
- /*--------------------------------------------------------------------+
- | If the first character was just sent, go back and send a second.
- +--------------------------------------------------------------------*/
- cmpi cr0,1,r5,0x0000
- addi r5,r5,1
- beq ..again
- /*--------------------------------------------------------------------+
- | Restore serial port settings.
- +--------------------------------------------------------------------*/
- addi r4,r0,0x80
- stb r4,asyncLCR(r3)
- rlwinm r4,r11,16,24,31
- stb r4,asyncDLABMsb(r3)
- rlwinm r4,r11,24,24,31
- stb r4,asyncDLABLsb(r3)
- rlwinm r4,r11,0,24,31
- stb r4,asyncLCR(r3)
- rlwinm r4,r12,16,24,31
- stb r4,asyncMCR(r3)
- rlwinm r4,r12,24,24,31
- stb r4,asyncIER(r3)
- rlwinm r4,r12,0,24,31
- stb r4,asyncFCR(r3)
- /*--------------------------------------------------------------------+
- | Calculate timebase speed (r9 is the time we are referencing).
- +--------------------------------------------------------------------*/
- addis r4,r0,SPEED_7_159@h
- ori r4,r4,SPEED_7_159@l
- cmp cr0,r9,r4
- blt ..freq6
- addis r4,r0,SPEED_8_33@h
- ori r4,r4,SPEED_8_33@l
- cmp cr0,r9,r4
- blt ..freq7
- addis r4,r0,SPEED_10_4@h
- ori r4,r4,SPEED_10_4@l
- cmp cr0,r9,r4
- blt ..freq8
- addis r4,r0,SPEED_14_318@h
- ori r4,r4,SPEED_14_318@l
- cmp cr0,r9,r4
- blt ..freq10
- addis r4,r0,SPEED_16_66@h
- ori r4,r4,SPEED_16_66@l
- cmp cr0,r9,r4
- blt ..freq14
- addis r4,r0,SPEED_25@h
- ori r4,r4,SPEED_25@l
- cmp cr0,r9,r4
- blt ..freq16
- addis r4,r0,SPEED_33@h
- ori r4,r4,SPEED_33@l
- cmp cr0,r9,r4
- blt ..freq25
- addis r4,r0,SPEED_40@h
- ori r4,r4,SPEED_40@l
- cmp cr0,r9,r4
- blt ..freq33
- addis r4,r0,SPEED_50@h
- ori r4,r4,SPEED_50@l
- cmp cr0,r9,r4
- blt ..freq40
- addis r4,r0,SPEED_66@h
- ori r4,r4,SPEED_66@l
- cmp cr0,r9,r4
- blt ..freq50
- addis r4,r0,SPEED_80@h
- ori r4,r4,SPEED_80@l
- cmp cr0,r9,r4
- blt ..freq66
- addis r4,r0,SPEED_100@h
- ori r4,r4,SPEED_100@l
- cmp cr0,r9,r4
- blt ..freq80
- addis r4,r0,SPEED_125@h
- ori r4,r4,SPEED_125@l
- cmp cr0,r9,r4
- blt ..freq100
- addis r4,r0,SPEED_133@h
- ori r4,r4,SPEED_133@l
- cmp cr0,r9,r4
- blt ..freq125
- addis r4,r0,SPEED_150@h
- ori r4,r4,SPEED_150@l
- cmp cr0,r9,r4
- blt ..freq133
- addis r4,r0,SPEED_166@h
- ori r4,r4,SPEED_166@l
- cmp cr0,r9,r4
- blt ..freq150
- addis r4,r0,SPEED_175@h
- ori r4,r4,SPEED_175@l
- cmp cr0,r9,r4
- blt ..freq166
- addis r4,r0,SPEED_200@h
- ori r4,r4,SPEED_200@l
- cmp cr0,r9,r4
- blt ..freq175
- addis r4,r0,SPEED_225@h
- ori r4,r4,SPEED_225@l
- cmp cr0,r9,r4
- blt ..freq200
- addis r4,r0,SPEED_250@h
- ori r4,r4,SPEED_250@l
- cmp cr0,r9,r4
- blt ..freq225
- addis r4,r0,SPEED_275@h
- ori r4,r4,SPEED_275@l
- cmp cr0,r9,r4
- blt ..freq250
- addis r4,r0,SPEED_300@h
- ori r4,r4,SPEED_300@l
- cmp cr0,r9,r4
- blt ..freq275
- addis r4,r0,SPEED_3375@h
- ori r4,r4,SPEED_3375@l
- cmp cr0,r9,r4
- blt ..freq300
- addis r4,r0,SPEED_375@h
- ori r4,r4,SPEED_375@l
- cmp cr0,r9,r4
- blt ..freq3375
- addis r4,r0,SPEED_400@h
- ori r4,r4,SPEED_400@l
- cmp cr0,r9,r4
- blt ..freq375
- addis r4,r0,SPEED_433@h
- ori r4,r4,SPEED_433@l
- cmp cr0,r9,r4
- blt ..freq400
- addis r4,r0,SPEED_466@h
- ori r4,r4,SPEED_466@l
- cmp cr0,r9,r4
- blt ..freq433
- addis r4,r0,SPEED_500@h
- ori r4,r4,SPEED_500@l
- cmp cr0,r9,r4
- blt ..freq466
- b ..freq500
-..freq6:
- addis r3,r0,0x005F
- ori r3,r3,0x5e10
- b ..end
-..freq7:
- addis r3,r0,0x006D
- ori r3,r3,0x3CD8
- b ..end
-..freq8:
- addis r3,r0,0x007F
- ori r3,r3,0x2815
- b ..end
-..freq10:
- addis r3,r0,0x009e
- ori r3,r3,0xb100
- b ..end
-..freq14:
- addis r3,r0,0x00da
- ori r3,r3,0x79b0
- b ..end
-..freq16:
- addis r3,r0,0x00fe
- ori r3,r3,0x502A
- b ..end
-..freq25:
- addis r3,r0,0x017D
- ori r3,r3,0x7840
- b ..end
-..freq33:
- addis r3,r0,0x01FC
- ori r3,r3,0xA055
- b ..end
-..freq40:
- addis r3,r0,0x0262
- ori r3,r3,0x5A00
- b ..end
-..freq50:
- addis r3,r0,0x02FA
- ori r3,r3,0xF080
- b ..end
-..freq66:
- addis r3,r0,0x03F9
- ori r3,r3,0x40AA
- b ..end
-..freq80:
- addis r3,r0,0x04C4
- ori r3,r3,0xB400
- b ..end
-..freq100:
- addis r3,r0,0x05F5
- ori r3,r3,0xE100
- b ..end
-..freq125:
- addis r3,r0,0x0773
- ori r3,r3,0x5940
- b ..end
-..freq133:
- addis r3,r0,0x07F2
- ori r3,r3,0x8155
- b ..end
-..freq150:
- addis r3,r0,0x08F0
- ori r3,r3,0xD180
- b ..end
-..freq166:
- addis r3,r0,0x09EF
- ori r3,r3,0x21AA
- b ..end
-..freq175:
- addis r3,r0,0x0A6E
- ori r3,r3,0x49C0
- b ..end
-..freq200:
- addis r3,r0,0x0BEB
- ori r3,r3,0xC200
- b ..end
-..freq225:
- addis r3,r0,0x0D69
- ori r3,r3,0x3A40
- b ..end
-..freq250:
- addis r3,r0,0x0EE6
- ori r3,r3,0xB280
- b ..end
-..freq275:
- addis r3,r0,0x1064
- ori r3,r3,0x2AC0
- b ..end
-..freq300:
- addis r3,r0,0x11E1
- ori r3,r3,0xA300
- b ..end
-..freq3375:
- addis r3,r0,0x141D
- ori r3,r3,0xD760
- b ..end
-..freq375:
- addis r3,r0,0x165A
- ori r3,r3,0x0BC0
- b ..end
-..freq400:
- addis r3,r0,0x17D7
- ori r3,r3,0x8400
- b ..end
-..freq433:
- addis r3,r0,0x19CF
- ori r3,r3,0x0E40
- b ..end
-..freq466:
- addis r3,r0,0x1BC6
- ori r3,r3,0x9880
- b ..end
-..freq500:
- addis r3,r0,0x1DCD
- ori r3,r3,0x6500
-..end: mtmsrd r10,1
- isync
- blr
- function_epilog(timebase_speed_calc)
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