ABB semaphore protection overhaul The ABB semaphone protection logic that came with TCS211 from TI was broken in several ways: * Some semaphore-protected functions were called from Application_Initialize() context. NU_Obtain_Semaphore() called with NU_SUSPEND fails with NU_INVALID_SUSPEND in this context, but the return value wasn't checked, and NU_Release_Semaphore() would be called unconditionally at the end. The latter call would increment the semaphore count past 1, making the semaphore no longer binary and thus no longer effective for resource protection. The fix is to check the return value from NU_Obtain_Semaphore() and skip the NU_Release_Semaphore() call if the semaphore wasn't properly obtained. * Some SPI hardware manipulation was being done before entering the semaphore- protected critical section. The fix is to reorder the code: first obtain the semaphore, then do everything else. * In the corner case of L1/DSP recovery, l1_abb_power_on() would call some non-semaphore-protected ABB & SPI init functions. The fix is to skip those calls in the case of recovery. * A few additional corner cases existed, all of which are fixed by making ABB semaphore protection 100% consistent for all ABB functions and code paths. There is still one remaining problem of priority inversion: suppose a low- priority task calls an ABB function, and some medium-priority task just happens to preempt right in the middle of that semaphore-protected ABB operation. Then the high-priority SPI task is locked out for a non-deterministic time until that medium-priority task finishes its work and goes back to sleep. This priority inversion problem remains outstanding for now.

[board.cfg]

BOARD 41

[chipset.cfg]

ANLG_FAM 2
ANLG_PG 0
CHIPSET var

[debug.cfg]

TI_NUC_MONITOR 0
TI_PROFILER var

[dio.cfg]

DIOIL_CONFIG 0

[ffs.cfg]

TARGET 1
_RVF 1

[l1sw.cfg]

AMR var
CUST 0
DCO_ALGO 0
IDS var
L1_12NEIGH 1
L1_EOTD 0
L1_EOTD_QBIT_ACC 0
L1_GPRS var
L1_GTT 0
L1_MIDI 0
L1_VOICE_MEMO_AMR var
MELODY_E2 var
OP_L1_STANDALONE 0
OP_RIV_AUDIO 1
ORDER2_TX_TEMP_CAL 1
RAZ_VULSWITCH_REGAUDIO 0
SECURITY 0
SPEECH_RECO var
TESTMODE 1
TRACE_TYPE 4
VCXO_ALGO 1

[r2d.cfg]

R2D_ASM 0
R2D_EMBEDDED_LCD var
R2D_LCD_TEST 0

[rf.cfg]

RF var
RF_FAM var
RF_PA var
RF_PG var

[rv.cfg]

RVTOOL 0
TEST 0
_GSM 1

[swconfig.cfg]

ALR 1
BT 0
DP 0
DWNLD 1
GSMLITE 0
L1_DYN_DSP_DWNLD var
LONG_JUMP 3
MOVE_IN_INTERNAL_RAM 1
OP_WCP 0
PMODE var
RVDATA_INTERNALRAM 0
SRVC var
TR_BAUD_CONFIG var
WCP_PROF 0

[sys.cfg]

DSP var
STD 6

[trace.cfg]

LAYER_DBG 0xFFFFFFFF
TRACE_LEVEL_FILTER 5