FreeCalypso > hg > fc-magnetite
view src/g23m-gsm/sim/sim_gprs.c @ 662:8cd8fd15a095
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.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 24 May 2020 05:02:28 +0000 |
parents | 27a4235405c6 |
children |
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/* +----------------------------------------------------------------------------- | Project : GSM-F&D (8411) | Modul : SIM_GPRS +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This modul defines the GPRS Upgrade. +----------------------------------------------------------------------------- */ #ifndef SIM_GPRS_C #define SIM_GPRS_C #define ENTITY_SIM /*==== INCLUDES ===================================================*/ #include <string.h> #include "typedefs.h" #include "pcm.h" #include "pconst.cdg" #include "message.h" #include "ccdapi.h" #include "vsi.h" #include "custom.h" #include "gsm.h" #include "cnf_sim.h" #include "mon_sim.h" #include "prim.h" #include "pei.h" #include "tok.h" #include "sim.h" /*==== EXPORT =====================================================*/ /*==== PRIVAT =====================================================*/ /*==== TYPES ======================================================*/ /*==== CONSTANTS ==================================================*/ /*==== VARIABLES ==================================================*/ /*==== FUNCTIONS ==================================================*/ /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (8419) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_check_pcm_data | +--------------------------------------------------------------------+ PURPOSE : Checks the validation of GPRS data stored in PCM. */ GLOBAL BOOL gprs_check_pcm_data (T_imsi_field *sim_imsi) { EF_IMSIGPRS imsi; UBYTE version; return pcm_ReadFile((UBYTE *)EF_IMSIGPRS_ID, SIZE_EF_IMSIGPRS, (UBYTE *)&imsi, &version) EQ PCM_OK AND (sim_imsi->c_field EQ imsi.len) AND !memcmp(imsi.IMSI, sim_imsi->field, sim_imsi->c_field); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (8419) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_gmm_insert_ind | +--------------------------------------------------------------------+ PURPOSE : Collects the initial data for GMM. */ GLOBAL void gprs_gmm_insert_ind (T_SIM_MM_INSERT_IND * sim_mm_insert_ind) { UBYTE kc_n[MAX_KC_N]; int i; /* * Read Parameters for GPRS mobility management */ PALLOC (sim_gmm_insert_ind, SIM_GMM_INSERT_IND); TRACE_FUNCTION ("gprs_sim_gmm_insert_ind()"); /* * administrative data */ sim_gmm_insert_ind->op_mode = sim_mm_insert_ind->ad[0]; /* * IMSI */ memcpy (&sim_gmm_insert_ind->imsi_field, &sim_mm_insert_ind->imsi_field, sizeof (T_imsi_field)); /* * Location Information */ memcpy (&sim_gmm_insert_ind->loc_info, &sim_mm_insert_ind->loc_info, sizeof (T_loc_info)); /* * access control classes */ memcpy (&sim_gmm_insert_ind->acc_ctrl, &sim_mm_insert_ind->acc_ctrl, sizeof (T_acc_ctrl)); /* * phase */ sim_gmm_insert_ind->phase = sim_data.sim_phase; if (SIM_IS_FLAG_SET (SERVICE_38_SUPPORT)) { /* * SIM card supports GPRS * * Read GPRS Location Information */ TRACE_EVENT ("SIM supports GPRS"); if (FKT_Select (SIM_LOCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { sim_gmm_insert_ind->gprs_loc_info.c_loc = MAX_LOCIGPRS; if (FKT_ReadBinary ((UBYTE *)&sim_gmm_insert_ind->gprs_loc_info.loc, 0, MAX_LOCIGPRS) NEQ SIM_NO_ERROR) { PFREE (sim_gmm_insert_ind); return; } } /* * Read GPRS KC */ if (FKT_Select (SIM_KCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { if (FKT_ReadBinary ((UBYTE *)kc_n, 0, MAX_KC_N) NEQ SIM_NO_ERROR) { PFREE (sim_gmm_insert_ind); return; } else { sim_gmm_insert_ind->kc_n.c_kc = MAX_KC_N; /* * Store KC in opposite order */ for (i = 0; i < MAX_KC; i++) sim_gmm_insert_ind->kc_n.kc[(MAX_KC-1)-i] = kc_n[i]; /* * Store cipher key sequence number */ sim_gmm_insert_ind->kc_n.kc[MAX_KC] = kc_n[MAX_KC]; } } } else { /* * Use PCM instead */ TRACE_EVENT ("SIM does not support GPRS"); /* * Only use ME data, when it is marked with IMSI * Note : No storage of the changed IMSI here! */ if (gprs_check_pcm_data (&sim_mm_insert_ind->imsi_field)) { UBYTE version; /* * then read the fields */ pcm_ReadFile((UBYTE *) EF_LOCGPRS_ID,SIZE_EF_LOCGPRS, (UBYTE *) &sim_gmm_insert_ind->gprs_loc_info.loc, &version); sim_gmm_insert_ind->gprs_loc_info.c_loc = MAX_LOCIGPRS; pcm_ReadFile((UBYTE *) EF_KCGPRS_ID,SIZE_EF_KCGPRS, (UBYTE *) &sim_gmm_insert_ind->kc_n, &version); } else { /* * reading of IMSI failed, set values to defaults */ memset (&sim_gmm_insert_ind->gprs_loc_info.loc, 0xFF, MAX_LOCIGPRS); sim_gmm_insert_ind->gprs_loc_info.loc[11] = 0xFE; sim_gmm_insert_ind->gprs_loc_info.c_loc = 0; memset (&sim_gmm_insert_ind->kc_n, 0xFF, 9); } } /* * send information to GPRS mobility management */ PSENDX (GMM, sim_gmm_insert_ind); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-PS (6302) MODULE : SIM_GPRS | | STATE : code ROUTINE : gprs_gmm_update_req | +--------------------------------------------------------------------+ PURPOSE : Process of the primitive SIM_GMM_UPDATE_REQ. */ GLOBAL void gprs_sim_gmm_update_req (T_SIM_GMM_UPDATE_REQ * sim_gmm_update_req) { int i; T_kc_n kc_n; TRACE_FUNCTION ("gprs_sim_gmm_update_req()"); /* * prepare kc and cksn for storing */ kc_n.c_kc = MAX_KC_N; kc_n.kc[MAX_KC] = sim_gmm_update_req->cksn; for (i = 0; i < MAX_KC; i++) kc_n.kc[(MAX_KC-1)-i] = sim_gmm_update_req->kc[i]; /* * SIM with GPRS service activated? */ if (SIM_IS_FLAG_SET (SERVICE_38_SUPPORT)) { /* * check location information */ if (sim_gmm_update_req->gprs_loc_info.c_loc > 0) { if (FKT_Select (SIM_LOCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) FKT_UpdateBinary (sim_gmm_update_req->gprs_loc_info.loc, MAX_LOCIGPRS, 0); } /* * store kc and cksn */ if (FKT_Select (SIM_KCGPRS, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR) { FKT_UpdateBinary (kc_n.kc, kc_n.c_kc, 0); } } else { /* * SIM with no GPRS service: store in ME memory */ T_imsi_field sim_imsi; if (FKT_Select (SIM_IMSI, FALSE, NULL, NULL, 0) EQ SIM_NO_ERROR AND FKT_ReadBinary ((UBYTE *)&sim_imsi, 0, MAX_IMSI) EQ SIM_NO_ERROR) { /* * Compare IMSI on SIM with IMSI in ME memory */ if (!gprs_check_pcm_data (&sim_imsi)) { /* * Check GPRS attach status of current IMSI (from SIM) */ if (sim_gmm_update_req->att_status) /* * Update IMSI in ME memory, when attached */ pcm_WriteFile((UBYTE *)EF_IMSIGPRS_ID, SIZE_EF_IMSIGPRS, (UBYTE *)&sim_imsi); else { /* * do not update GPRS data */ PFREE (sim_gmm_update_req); return; } } /* * Update GPRS data in ME memory */ if (sim_gmm_update_req->gprs_loc_info.c_loc > 0) { pcm_WriteFile((UBYTE *)EF_LOCGPRS_ID,SIZE_EF_LOCGPRS, (UBYTE *)&sim_gmm_update_req->gprs_loc_info.loc); } pcm_WriteFile((UBYTE *)EF_KCGPRS_ID,SIZE_EF_KCGPRS, (UBYTE *)kc_n.kc); } } PFREE (sim_gmm_update_req); } #endif