FreeCalypso > hg > fc-tourmaline
annotate src/cs/layer1/cfile/l1_small_asm.S @ 303:f76436d19a7a default tip
!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> |
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date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | 4e78acac3d88 |
children |
rev | line source |
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0
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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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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parents:
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3 * |
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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 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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6 * needed to support other CHIPSETs. |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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7 */ |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
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9 .text |
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10 .code 32 |
4e78acac3d88
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11 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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12 /*-------------------------------------------------------*/ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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13 /* _GSM_Small_Sleep */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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14 /* (formerly INT_Small_Sleep) */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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15 /*-------------------------------------------------------*/ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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16 /* */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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17 /* Description: small sleep */ |
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18 /* ------------ */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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19 /* Called by TCT_Schedule main loop of Nucleus */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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20 /*-------------------------------------------------------*/ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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21 |
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22 #define SMALL_SLEEP 0x01 |
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23 #define ALL_SLEEP 0x04 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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24 #define BIG_SMALL_SLEEP 0x05 |
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25 #define PWR_MNGT 0x01 |
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26 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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27 .globl _GSM_Small_Sleep |
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28 _GSM_Small_Sleep: |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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29 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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30 ldr r0,Switch |
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31 ldr r0,[r0] |
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32 ldrb r1,[r0] |
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33 cmp r1,#PWR_MNGT |
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34 bne TCT_Schedule_Loop |
4e78acac3d88
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35 |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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36 ldr r0,Mode |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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37 ldr r0,[r0] |
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src/{condat,cs,gpf,nucleus}: import from Selenite
Mychaela Falconia <falcon@freecalypso.org>
parents:
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38 ldrb r1,[r0] |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
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parents:
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39 cmp r1,#SMALL_SLEEP |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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40 beq Small_sleep_ok |
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41 cmp r1,#ALL_SLEEP |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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42 beq Small_sleep_ok |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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43 cmp r1,#BIG_SMALL_SLEEP |
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44 bne TCT_Schedule_Loop |
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45 |
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46 Small_sleep_ok: |
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47 |
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48 // ***************************************************** |
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49 //reset the DEEP_SLEEP bit 12 of CNTL_ARM_CLK register |
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50 // (Cf BUG_1278) |
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51 |
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52 ldr r0,addrCLKM @ pick up CNTL_ARM_CLK register address |
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53 ldrh r1,[r0] @ take the current value of the register |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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54 orr r1,r1,#0x1000 @ reset the bit |
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55 strh r1,[r0] @ store the result |
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56 |
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57 ldr r0,addrCLKM @ pick up CLKM clock register address |
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58 ldrh r1,[r0] @ take the current value of the register |
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59 bic r1,r1,#1 @ disable ARM clock |
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60 strh r1,[r0] |
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61 |
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62 B TCT_Schedule_Loop @ Return to TCT_Schedule main loop |
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63 |
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64 addrCLKM: .word 0xfffffd00 @ CLKM clock register address |
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65 |
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66 Mode: .word mode_authorized |
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67 Switch: .word switch_PWR_MNGT |