#include <common.h> #include <mpc8xx.h> #include <pcmcia.h> #undef CONFIG_PCMCIA #if defined(CONFIG_CMD_PCMCIA) #define CONFIG_PCMCIA #endif #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD) #define CONFIG_PCMCIA #endif #ifdef CONFIG_PCMCIA #define PCMCIA_BOARD_MSG "C2MON" static void cfg_ports (void) { volatile immap_t *immap; volatile cpm8xx_t *cp; ushort sreg; immap = (immap_t *)CONFIG_SYS_IMMR; cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); /* * Configure Port C for TPS2211 PC-Card Power-Interface Switch * * Switch off all voltages, assert shutdown */ sreg = immap->im_ioport.iop_pcdat; sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1); /* VAVPP => Hi-Z */ sreg &= ~(TPS2211_VCCD0 | TPS2211_VCCD1); /* 3V and 5V off */ immap->im_ioport.iop_pcdat = sreg; immap->im_ioport.iop_pcpar &= ~(TPS2211_OUTPUTS); immap->im_ioport.iop_pcdir |= TPS2211_OUTPUTS; debug ("Set Port C: PAR: %04x DIR: %04x DAT: %04x\n", immap->im_ioport.iop_pcpar, immap->im_ioport.iop_pcdir, immap->im_ioport.iop_pcdat); /* * Configure Port B for TPS2211 PC-Card Power-Interface Switch * * Over-Current Input only */ cp->cp_pbpar &= ~(TPS2211_INPUTS); cp->cp_pbdir &= ~(TPS2211_INPUTS); debug ("Set Port B: PAR: %08x DIR: %08x DAT: %08x\n", cp->cp_pbpar, cp->cp_pbdir, cp->cp_pbdat); } int pcmcia_hardware_enable(int slot) { volatile immap_t *immap; volatile cpm8xx_t *cp; volatile pcmconf8xx_t *pcmp; volatile sysconf8xx_t *sysp; uint reg, pipr, mask; ushort sreg; int i; debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); udelay(10000); immap = (immap_t *)CONFIG_SYS_IMMR; sysp = (sysconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_siu_conf)); pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); /* Configure Ports for TPS2211A PC-Card Power-Interface Switch */ cfg_ports (); /* * Configure SIUMCR to enable PCMCIA port B * (VFLS[0:1] are not used for debugging, we connect FRZ# instead) */ sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */ /* clear interrupt state, and disable interrupts */ pcmp->pcmc_pscr = PCMCIA_MASK(_slot_); pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_); /* * Disable interrupts, DMA, and PCMCIA buffers * (isolate the interface) and assert RESET signal */ debug ("Disable PCMCIA buffers and assert RESET\n"); reg = 0; reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ PCMCIA_PGCRX(_slot_) = reg; udelay(500); /* * Make sure there is a card in the slot, then configure the interface. */ udelay(10000); debug ("[%d] %s: PIPR(%p)=0x%x\n", __LINE__,__FUNCTION__, &(pcmp->pcmc_pipr),pcmp->pcmc_pipr); if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) { printf (" No Card found\n"); return (1); } /* * Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z */ mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot); pipr = pcmp->pcmc_pipr; debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", pipr, (reg&PCMCIA_VS1(slot))?"n":"ff", (reg&PCMCIA_VS2(slot))?"n":"ff"); sreg = immap->im_ioport.iop_pcdat; if ((pipr & mask) == mask) { sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */ TPS2211_VCCD1); /* 5V on */ sreg &= ~(TPS2211_VCCD0); /* 3V off */ puts (" 5.0V card found: "); } else { sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */ TPS2211_VCCD0); /* 3V on */ sreg &= ~(TPS2211_VCCD1); /* 5V off */ puts (" 3.3V card found: "); } debug ("\nPC DAT: %04x -> 3.3V %s 5.0V %s\n", sreg, ( (sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) ? "on" : "off", (!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) ? "on" : "off" ); immap->im_ioport.iop_pcdat = sreg; /* Wait 500 ms; use this to check for over-current */ for (i=0; i<5000; ++i) { if ((cp->cp_pbdat & TPS2211_OC) == 0) { printf (" *** Overcurrent - Safety shutdown ***\n"); immap->im_ioport.iop_pcdat &= ~(TPS2211_VCCD0|TPS2211_VCCD1); return (1); } udelay (100); } debug ("Enable PCMCIA buffers and stop RESET\n"); reg = PCMCIA_PGCRX(_slot_); reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */ reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */ PCMCIA_PGCRX(_slot_) = reg; udelay(250000); /* some cards need >150 ms to come up :-( */ debug ("# hardware_enable done\n"); return (0); } #if defined(CONFIG_CMD_PCMCIA) int pcmcia_hardware_disable(int slot) { volatile immap_t *immap; volatile cpm8xx_t *cp; volatile pcmconf8xx_t *pcmp; u_long reg; debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); immap = (immap_t *)CONFIG_SYS_IMMR; pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); /* Configure PCMCIA General Control Register */ debug ("Disable PCMCIA buffers and assert RESET\n"); reg = 0; reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ PCMCIA_PGCRX(_slot_) = reg; /* ALl voltages off / Hi-Z */ immap->im_ioport.iop_pcdat |= (TPS2211_VPPD0 | TPS2211_VPPD1 | TPS2211_VCCD0 | TPS2211_VCCD1 ); udelay(10000); return (0); } #endif int pcmcia_voltage_set(int slot, int vcc, int vpp) { volatile immap_t *immap; volatile pcmconf8xx_t *pcmp; u_long reg; ushort sreg; debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, Vcc=%d.%d, Vpp=%d.%d\n", 'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10); immap = (immap_t *)CONFIG_SYS_IMMR; pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); /* * Disable PCMCIA buffers (isolate the interface) * and assert RESET signal */ debug ("Disable PCMCIA buffers and assert RESET\n"); reg = PCMCIA_PGCRX(_slot_); reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */ reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */ PCMCIA_PGCRX(_slot_) = reg; udelay(500); /* * Configure Port C pins for * 5 Volts Enable and 3 Volts enable, * Turn all power pins to Hi-Z */ debug ("PCMCIA power OFF\n"); cfg_ports (); /* Enables switch, but all in Hi-Z */ sreg = immap->im_ioport.iop_pcdat; sreg |= TPS2211_VPPD0 | TPS2211_VPPD1; /* VAVPP always Hi-Z */ switch(vcc) { case 0: break; /* Switch off */ case 33: sreg |= TPS2211_VCCD0; /* Switch on 3.3V */ sreg &= ~TPS2211_VCCD1; break; case 50: sreg &= ~TPS2211_VCCD0; /* Switch on 5.0V */ sreg |= TPS2211_VCCD1; break; default: goto done; } /* Checking supported voltages */ debug ("PIPR: 0x%x --> %s\n", pcmp->pcmc_pipr, (pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V"); immap->im_ioport.iop_pcdat = sreg; #ifdef DEBUG { char *s; if ((sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) { s = "at 3.3V"; } else if (!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) { s = "at 5.0V"; } else { s = "down"; } printf ("PCMCIA powered %s\n", s); } #endif done: debug ("Enable PCMCIA buffers and stop RESET\n"); reg = PCMCIA_PGCRX(_slot_); reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */ reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */ PCMCIA_PGCRX(_slot_) = reg; udelay(500); debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A'); return (0); } #endif /* CONFIG_PCMCIA */