FreeCalypso > hg > fc-tourmaline
view src/cs/drivers/drv_app/sim/sim32.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 24 Sep 2021 02:03:08 +0000 |
parents | cf882d95c799 |
children |
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/* * SIM32.C * * Pole Star SIM * * Target : ARM * * Copyright (c) Texas Instruments 1995 * */ #define SIM32_C 1 #include "chipset.cfg" #include "main/sys_types.h" #include <assert.h> #include "inth/iq.h" #include "sim.h" #ifdef SIM_DEBUG_TRACE /* working buffer for NULL BYTE */ extern SYS_UWORD8 SIM_dbg_null[]; /* Nucleus variable given the current number of TDMA frames */ extern SYS_UWORD32 IQ_FrameCount; /* working variable to calculate the TDMA ecart */ extern SYS_UWORD16 SIM_dbg_tdma_diff; /* working variable storing the current number of TDMA frames elapsed */ SYS_UWORD32 SIM_dbg_local_count; #endif /* * SIM_IntHandler * * Read cause of SIM interrupt : * * if receive buffer full, read char * if transmitter empty, change direction, transmit a dummy char * */ void SIM_IntHandler(void) { volatile unsigned short it, i, stat, conf1; volatile SYS_UWORD8 ins; volatile SYS_UWORD8 rx; volatile SYS_UWORD8 nack; volatile SYS_UWORD8 nack1; SIM_PORT *p; p = &(Sim[0]); p->rxParityErr = 0; it = p->c->it; if ((it & SIM_IT_ITRX) && !(p->c->maskit & SIM_MASK_RX)) // int on reception { stat = p->c->rx; conf1 = p->conf1; #ifdef SIM_DEBUG_TRACE if ((IQ_FrameCount - SIM_dbg_local_count) > SIM_dbg_tdma_diff) { SIM_dbg_tdma_diff = IQ_FrameCount - SIM_dbg_local_count; } SIM_dbg_local_count = IQ_FrameCount; #endif // Check if reception parity is enable if (((conf1 & SIM_CONF1_CHKPAR) && ((stat & SIM_DRX_STATRXPAR) != 0))\ || ((conf1 & SIM_CONF1_CHKPAR) == 0)) { rx = (SYS_UWORD8) (stat & 0x00FF); ins = p->xbuf[1] & p->hw_mask; nack = (~p->xbuf[1]) & p->hw_mask; switch (p->moderx) { case 0: //mode of normal reception without proc char (like PTS proc) p->rbuf[p->rx_index++] = rx; break; case 1: //mode wait for ACK if ((rx & p->hw_mask) == ins) { p->moderx = 2; } else if ((rx & p->hw_mask) == nack) { p->moderx = 4; } else if (((rx & 0xF0) == 0x60) || ((rx & 0xF0) == 0x90)) { if (rx != 0x60) //in case of error code (SW1/SW2) returned by sim card { p->rSW12[p->SWcount++] = rx; p->moderx = 5; } else { p->null_received = 1; #ifdef SIM_DEBUG_TRACE SIM_dbg_null[0]++; #endif } } else { p->errorSIM = SIM_ERR_ABNORMAL_CASE2; } //if rx = 0x60 wait for ACK break; case 2: //mode reception by block p->rbuf[p->rx_index++] = rx; if(p->expected_data == 256) { if (p->rx_index == 0) { p->moderx = 5; } } else { if (p->rx_index == p->expected_data) { p->moderx = 5; } } break; case 3: //mode reception char by char. reception of proc char if ((rx & p->hw_mask) == ins) { p->moderx = 2; } else if ((rx & p->hw_mask) == nack) { p->moderx = 4; } //if rx = 0x60 wait for ACK else if (rx == 0x60) { p->null_received == 1; #ifdef SIM_DEBUG_TRACE SIM_dbg_null[1]++; #endif } break; case 4: //mode reception char by char. reception of data p->rbuf[p->rx_index++] = rx; p->moderx = 3; //switch to receive proc char mode if(p->expected_data == 256) { if (p->rx_index == 0) { p->moderx = 5; } } else { if (p->rx_index == p->expected_data) { p->moderx = 5; } } break; case 5: //mode wait for procedure character except NULL if ((rx != 0x60) || (p->SWcount != 0)) //treat NULL character only if arriving before SW1 SW2 { p->rSW12[p->SWcount++] = rx; } else { p->null_received = 1; #ifdef SIM_DEBUG_TRACE SIM_dbg_null[2]++; #endif } break; case 6: //give the acknowledge char if (((rx & 0xF0) == 0x60) || ((rx & 0xF0) == 0x90)) { if (rx != 0x60) //in case of error code (SW1/SW2) returned by sim card { p->rSW12[p->SWcount++] = rx; p->moderx = 5; } else { p->null_received = 1; #ifdef SIM_DEBUG_TRACE SIM_dbg_null[3]++; #endif } } else { p->ack = rx; } } } else { p->rxParityErr = 1; } } if ((it & SIM_IT_ITTX) && !(p->c->maskit & SIM_MASK_TX)) { #ifdef SIM_DEBUG_TRACE SIM_dbg_local_count = IQ_FrameCount; #endif // check the transmit parity stat = p->c->stat; if ((stat & SIM_STAT_TXPAR) || ((p->conf1 & SIM_CONF1_CHKPAR) == 0)) //parity disable { if (p->xOut != (p->xIn - 1)) //if only one char transmitted (already transmitted) { //just need to have confirmation of reception if (p->xOut == (p->xIn - 2)) { p->xOut++; p->c->tx = *(p->xOut); // transmit p->conf1 &= ~SIM_CONF1_TXRX; // return the direction p->c->conf1 = p->conf1; } if (p->xOut < (p->xIn - 2)) { p->xOut++; p->c->tx = *(p->xOut); // transmit } } } else { p->c->tx = *(p->xOut); // transmit same char p->txParityErr++; // count number of transmit parity errors } } // Handle errors if ((it & SIM_IT_ITOV) && !(p->c->maskit & SIM_MASK_OV)) { p->errorSIM = SIM_ERR_OVF; } if ((it & SIM_IT_WT) && !(p->c->maskit & SIM_MASK_WT)) { p->errorSIM = SIM_ERR_READ; } // Reset the card in case of NATR to let the program continue if ((it & SIM_IT_NATR) && !(p->c->maskit & SIM_MASK_NATR)) { p->c->cmd = SIM_CMD_STOP; p->errorSIM = SIM_ERR_NATR; } #if ((CHIPSET == 2) || (CHIPSET == 3)) // SIM card insertion / extraction if ((it & SIM_IT_CD) && !(p->c->maskit & SIM_MASK_CD)) { stat = p->c->stat; if ((stat & SIM_STAT_CD) != SIM_STAT_CD) { (p->RemoveFunc)(); p->errorSIM = SIM_ERR_NOCARD; } } #endif } #if ((CHIPSET == 4) || (CHIPSET == 5) || (CHIPSET == 6) || (CHIPSET == 7) || (CHIPSET == 8) || (CHIPSET == 9) || (CHIPSET == 10) || (CHIPSET == 11) || (CHIPSET == 12)) /* * SIM_CD_IntHandler * * Read cause of SIM interrupt : * */ void SIM_CD_IntHandler(void) { volatile unsigned short it_cd, stat; SIM_PORT *p; p = &(Sim[0]); p->rxParityErr = 0; it_cd = p->c->it_cd; // SIM card insertion / extraction if ((it_cd & SIM_IT_CD) && !(p->c->maskit & SIM_MASK_CD)) { stat = p->c->stat; if ((stat & SIM_STAT_CD) != SIM_STAT_CD) { (p->RemoveFunc)(); p->errorSIM = SIM_ERR_NOCARD; } } } #endif // to force this module to be linked SYS_UWORD16 SIM_Dummy(void) { }