SIM speed enhancement re-enabled and made configurable TI's original code supported SIM speed enhancement, but Openmoko had it disabled, and OM's disabling of speed enhancement somehow caused certain SIM cards to start working which didn't work before (OM's bug #666). Because our FC community is much smaller in year 2020 than OM's community was in their day, we are not able to find one of those #666-affected SIMs, thus the real issue they had encountered remains elusive. Thus our solution is to re-enable SIM speed enhancement and simply wait for if and when someone runs into a #666-affected SIM once again. We provide a SIM_allow_speed_enhancement global variable that allows SIM speed enhancement to be enabled or disabled per session, and an /etc/SIM_spenh file in FFS that allows it to enabled or disabled on a non-volatile basis. SIM speed enhancement is now enabled by default.

/*
 * This version of fflags.h (ccdgen config file) is a FreeCalypso concoction.
 * Here I set all feature flags to OFF in order to create a configuration
 * that mimics the TCS211 program.
 */

#undef  FF_PS_RSSI
#undef  SIM_PERS
#undef  FF_PHONE_LOCK
#undef  TI_PS_FF_AT_CMD_P_ECC
#undef  TI_PS_FF_REL99_AND_ABOVE
#undef  TI_DUAL_MODE
#undef  REL99
#undef  FF_BHO
#undef  TI_PS_FF_EMR
#undef  TI_PS_FF_RTD
#undef  FF_EGPRS
#undef  REL4
#undef  TI_PS_FF_TBF_EST_PACCH
#undef  TI_PS_FF_QUAD_BAND_SUPPORT