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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 | #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 "KUP" #define KUP4K_PCMCIA_B_3V3 (0x00020000) int pcmcia_hardware_enable(int slot) { volatile immap_t *immap; volatile cpm8xx_t *cp; volatile pcmconf8xx_t *pcmp; volatile sysconf8xx_t *sysp; uint reg, mask; debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot); udelay(10000); immap = (immap_t *)CFG_IMMR; sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf)); pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm)); /* * 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(2500); /* * Configure Port B pins for * 3 Volts enable */ if (slot) { /* Slot A is built-in */ cp->cp_pbdir |= KUP4K_PCMCIA_B_3V3; cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3; /* remove all power */ cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3; /* active low */ } /* * 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. */ printf("%s Slot %c:", slot ? "" : "\n", 'A' + slot); mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot); reg = pcmp->pcmc_pipr; debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n", reg, (reg&PCMCIA_VS1(slot))?"n":"ff", (reg&PCMCIA_VS2(slot))?"n":"ff"); if ((reg & mask) == mask) { puts (" 5.0V card found: NOT SUPPORTED !!!\n"); } else { if(slot) cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3; puts (" 3.3V card found: "); } #if 0 /* VCC switch error flag, PCMCIA slot INPACK_ pin */ cp->cp_pbdir &= ~(0x0020 | 0x0010); cp->cp_pbpar &= ~(0x0020 | 0x0010); udelay(500000); #endif 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 *)CFG_IMMR; pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm)); /* remove all power */ if (slot) cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3; /* 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 immap_t *immap; 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); if (!slot) /* Slot A is not configurable */ return 0; immap = (immap_t *)CFG_IMMR; pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia)); cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm)); /* * 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); debug ("PCMCIA power OFF\n"); /* * Configure Port B pins for * 3 Volts enable */ cp->cp_pbdir |= KUP4K_PCMCIA_B_3V3; cp->cp_pbpar &= ~KUP4K_PCMCIA_B_3V3; /* remove all power */ cp->cp_pbdat |= KUP4K_PCMCIA_B_3V3; /* active low */ switch(vcc) { case 0: break; case 33: cp->cp_pbdat &= ~KUP4K_PCMCIA_B_3V3; debug ("PCMCIA powered at 3.3V\n"); break; case 50: debug ("PCMCIA: 5Volt vcc not supported\n"); break; default: puts("PCMCIA: vcc not supported"); break; } udelay(10000); /* Checking supported voltages */ debug ("PIPR: 0x%x --> %s\n", pcmp->pcmc_pipr, (pcmp->pcmc_pipr & (0x80000000 >> (slot << 4))) ? "only 5 V --> NOT SUPPORTED" : "can do 3.3V"); 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 */ |