FreeCalypso > hg > fc-tourmaline

annotate src/cs/layer1/cfile/l1_small_asm.S @ 303:f76436d19a7a default tip

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!GPRS config: fix long-standing AT+COPS chance hanging bug There has been a long-standing bug in FreeCalypso going back years: sometimes in the AT command bring-up sequence of an ACI-only MS, the AT+COPS command would produce only a power scan followed by cessation of protocol stack activity (only L1 ADC traces), instead of the expected network search sequence. This behaviour was seen in different FC firmware versions going back to Citrine, and seemed to follow some law of chance, not reliably repeatable. This bug has been tracked down and found to be specific to !GPRS configuration, stemming from our TCS2/TCS3 hybrid and reconstruction of !GPRS support that was bitrotten in TCS3.2/LoCosto version. ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3 version and had to be pulled from TCS2 - but as it turns out, there is a new field in the MMR_REG_REQ primitive that needs to be set correctly, and that psa_mms.c module is the place where this initialization needed to be added.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 08 Jun 2023 08:23:37 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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2 * Assembly code extracted out of TI's l1_small.c
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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4 * This code is correct ONLY for CHIPSET 10 or 11 as currently used
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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5 * by FreeCalypso; see TI's original code for what changes would be
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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6 * needed to support other CHIPSETs.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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7 */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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8
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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9 .text
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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10 .code 32
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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11
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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12 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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13 /* _GSM_Small_Sleep */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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14 /* (formerly INT_Small_Sleep) */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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15 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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16 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17 /* Description: small sleep */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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18 /* ------------ */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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19 /* Called by TCT_Schedule main loop of Nucleus */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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20 /*-------------------------------------------------------*/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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21
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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22 #define SMALL_SLEEP 0x01
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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23 #define ALL_SLEEP 0x04
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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24 #define BIG_SMALL_SLEEP 0x05
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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25 #define PWR_MNGT 0x01
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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26
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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27 .globl _GSM_Small_Sleep
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 _GSM_Small_Sleep:
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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29
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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30 ldr r0,Switch
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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31 ldr r0,[r0]
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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32 ldrb r1,[r0]
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33 cmp r1,#PWR_MNGT
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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34 bne TCT_Schedule_Loop
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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35
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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36 ldr r0,Mode
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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37 ldr r0,[r0]
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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38 ldrb r1,[r0]
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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39 cmp r1,#SMALL_SLEEP
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40 beq Small_sleep_ok
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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41 cmp r1,#ALL_SLEEP
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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42 beq Small_sleep_ok
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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43 cmp r1,#BIG_SMALL_SLEEP
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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44 bne TCT_Schedule_Loop
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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45
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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46 Small_sleep_ok:
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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47
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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48 // *****************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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49 //reset the DEEP_SLEEP bit 12 of CNTL_ARM_CLK register
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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50 // (Cf BUG_1278)
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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51
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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52 ldr r0,addrCLKM @ pick up CNTL_ARM_CLK register address
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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53 ldrh r1,[r0] @ take the current value of the register
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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54 orr r1,r1,#0x1000 @ reset the bit
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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55 strh r1,[r0] @ store the result
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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56
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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57 ldr r0,addrCLKM @ pick up CLKM clock register address
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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58 ldrh r1,[r0] @ take the current value of the register
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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59 bic r1,r1,#1 @ disable ARM clock
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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60 strh r1,[r0]
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61
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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62 B TCT_Schedule_Loop @ Return to TCT_Schedule main loop
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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63
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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64 addrCLKM: .word 0xfffffd00 @ CLKM clock register address
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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65
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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66 Mode: .word mode_authorized
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
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67 Switch: .word switch_PWR_MNGT