#include #include #include #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 "ICU862" static void cfg_port_B (void) { volatile cpm8xx_t *cp; uint reg; cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); /* * Configure Port B for TPS2205 PC-Card Power-Interface Switch * * Switch off all voltages, assert shutdown */ reg = cp->cp_pbdat; reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */ TPS2205_VCC3 | TPS2205_VCC5 | /* VAVCC => Hi-Z */ TPS2205_SHDN); /* enable switch */ cp->cp_pbdat = reg; cp->cp_pbpar &= ~(TPS2205_INPUTS | TPS2205_OUTPUTS); reg = cp->cp_pbdir & ~(TPS2205_INPUTS); cp->cp_pbdir = reg | TPS2205_OUTPUTS; 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 cpm8xx_t *cp; volatile pcmconf8xx_t *pcmp; volatile sysconf8xx_t *sysp; uint reg, pipr, mask; int i; debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); udelay(10000); 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 Port B for TPS2205 PC-Card Power-Interface Switch */ cfg_port_B (); /* * 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"); reg = cp->cp_pbdat; if ((pipr & mask) == mask) { reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */ TPS2205_VCC3); /* 3V off */ reg &= ~(TPS2205_VCC5); /* 5V on */ puts (" 5.0V card found: "); } else { reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */ TPS2205_VCC5); /* 5V off */ reg &= ~(TPS2205_VCC3); /* 3V on */ puts (" 3.3V card found: "); } debug ("\nPB DAT: %08x -> 3.3V %s 5.0V %s VPP_PGM %s VPP_VCC %s\n", reg, (reg & TPS2205_VCC3) ? "off" : "on", (reg & TPS2205_VCC5) ? "off" : "on", (reg & TPS2205_VPP_PGM) ? "off" : "on", (reg & TPS2205_VPP_VCC) ? "off" : "on" ); cp->cp_pbdat = reg; /* Wait 500 ms; use this to check for over-current */ for (i=0; i<5000; ++i) { if ((cp->cp_pbdat & TPS2205_OC) == 0) { printf (" *** Overcurrent - Safety shutdown ***\n"); cp->cp_pbdat &= ~(TPS2205_SHDN); 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; cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); /* Shut down */ cp->cp_pbdat &= ~(TPS2205_SHDN); /* 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; udelay(10000); return (0); } #endif int pcmcia_voltage_set(int slot, int vcc, int vpp) { volatile cpm8xx_t *cp; volatile pcmconf8xx_t *pcmp; u_long reg; 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); cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); 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_port_B (); /* Enables switch, but all in Hi-Z */ reg = cp->cp_pbdat; switch(vcc) { case 0: break; /* Switch off */ case 33: reg &= ~TPS2205_VCC3; break; /* Switch on 3.3V */ case 50: reg &= ~TPS2205_VCC5; break; /* Switch on 5.0V */ 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"); cp->cp_pbdat = reg; #ifdef DEBUG { char *s; if ((reg & TPS2205_VCC3) == 0) { s = "at 3.3V"; } else if ((reg & TPS2205_VCC5) == 0) { 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 */