#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 /* some sane bit macros */ #define _BD(_b) (1U << (31-(_b))) #define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1)) #define _BW(_b) (1U << (15-(_b))) #define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1)) #define _BB(_b) (1U << (7-(_b))) #define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1)) #define _B(_b) _BD(_b) #define _BR(_l, _h) _BDR(_l, _h) #define PCMCIA_BOARD_MSG "NETTA" static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) }; static void cfg_vppd(int no) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0])) return; mask = vppd_masks[no]; immap->im_ioport.iop_papar &= ~mask; immap->im_ioport.iop_paodr &= ~mask; immap->im_ioport.iop_padir |= mask; } static void set_vppd(int no, int what) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0])) return; mask = vppd_masks[no]; if (what) immap->im_ioport.iop_padat |= mask; else immap->im_ioport.iop_padat &= ~mask; } static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) }; static void cfg_vccd(int no) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0])) return; mask = vccd_masks[no]; immap->im_ioport.iop_papar &= ~mask; immap->im_ioport.iop_paodr &= ~mask; immap->im_ioport.iop_padir |= mask; } static void set_vccd(int no, int what) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0])) return; mask = vccd_masks[no]; if (what) immap->im_ioport.iop_padat |= mask; else immap->im_ioport.iop_padat &= ~mask; } static const unsigned short oc_mask = _BW(8); static void cfg_oc(void) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask = oc_mask; immap->im_ioport.iop_pcdir &= ~mask; immap->im_ioport.iop_pcso &= ~mask; immap->im_ioport.iop_pcint &= ~mask; immap->im_ioport.iop_pcpar &= ~mask; } static int get_oc(void) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask = oc_mask; int what; what = !!(immap->im_ioport.iop_pcdat & mask);; return what; } static const unsigned short shdn_mask = _BW(12); static void cfg_shdn(void) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; mask = shdn_mask; immap->im_ioport.iop_papar &= ~mask; immap->im_ioport.iop_paodr &= ~mask; immap->im_ioport.iop_padir |= mask; } static void set_shdn(int what) { volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; unsigned short mask; mask = shdn_mask; if (what) immap->im_ioport.iop_padat |= mask; else immap->im_ioport.iop_padat &= ~mask; } static void cfg_ports (void) { cfg_vppd(0); cfg_vppd(1); /* VPPD0,VPPD1 VAVPP => Hi-Z */ cfg_vccd(0); cfg_vccd(1); /* 3V and 5V off */ cfg_shdn(); cfg_oc(); /* * Configure Port A for TPS2211 PC-Card Power-Interface Switch * * Switch off all voltages, assert shutdown */ set_vppd(0, 1); set_vppd(1, 1); set_vccd(0, 0); set_vccd(1, 0); set_shdn(1); udelay(100000); } int pcmcia_hardware_enable(int slot) { volatile pcmconf8xx_t *pcmp; uint reg, pipr, mask; int i; debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); udelay(10000); pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); /* Configure Ports for TPS2211A PC-Card Power-Interface Switch */ cfg_ports (); /* 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"); if ((pipr & mask) == mask) { set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */ set_vccd(0, 0); set_vccd(1, 1); /* 5V on, 3V off */ puts (" 5.0V card found: "); } else { set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */ set_vccd(0, 1); set_vccd(1, 0); /* 5V off, 3V on */ puts (" 3.3V card found: "); } /* Wait 500 ms; use this to check for over-current */ for (i=0; i<5000; ++i) { if (!get_oc()) { printf (" *** Overcurrent - Safety shutdown ***\n"); set_vccd(0, 0); set_vccd(1, 0); /* VAVPP => Hi-Z */ 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) { u_long reg; debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); /* 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 */ set_vppd(0, 1); set_vppd(1, 1); set_vccd(0, 1); set_vccd(1, 1); udelay(10000); return (0); } #endif int pcmcia_voltage_set(int slot, int vcc, int vpp) { 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); 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 */ set_vppd(0, 1); set_vppd(1, 1); switch(vcc) { case 0: break; /* Switch off */ case 33: set_vccd(0, 1); set_vccd(1, 0); break; case 50: set_vccd(0, 0); set_vccd(1, 1); 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"); 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 */