drivers/pcmcia/pxa_pcmcia.c

   1 #include <common.h>
   2 #include <config.h>
   3
   4 #ifdef CONFIG_PXA_PCMCIA
   5
   6 #include <pcmcia.h>
   7 #include <asm/arch/pxa-regs.h>
   8 #include <asm/io.h>
   9
  10 static inline void msWait(unsigned msVal)
  11 {
  12         udelay(msVal*1000);
  13 }
  14
  15 int pcmcia_on (void)
  16 {
  17         unsigned int reg_arr[] = {
  18                 0x48000028, CFG_MCMEM0_VAL,
  19                 0x4800002c, CFG_MCMEM1_VAL,
  20                 0x48000030, CFG_MCATT0_VAL,
  21                 0x48000034, CFG_MCATT1_VAL,
  22                 0x48000038, CFG_MCIO0_VAL,
  23                 0x4800003c, CFG_MCIO1_VAL,
  24
  25                 0, 0
  26         };
  27         int i, rc;
  28
  29 #ifdef CONFIG_EXADRON1
  30         int cardDetect;
  31         volatile unsigned int *v_pBCRReg =
  32                         (volatile unsigned int *) 0x08000000;
  33 #endif
  34
  35         debug ("%s\n", __FUNCTION__);
  36
  37         i = 0;
  38         while (reg_arr[i]) {
  39                 (*(volatile unsigned int *) reg_arr[i]) |= reg_arr[i + 1];
  40                 i += 2;
  41         }
  42         udelay (1000);
  43
  44         debug ("%s: programmed mem controller \n", __FUNCTION__);
  45
  46 #ifdef CONFIG_EXADRON1
  47
  48 /*define useful BCR masks */
  49 #define BCR_CF_INIT_VAL                     0x00007230
  50 #define BCR_CF_PWRON_BUSOFF_RESETOFF_VAL    0x00007231
  51 #define BCR_CF_PWRON_BUSOFF_RESETON_VAL     0x00007233
  52 #define BCR_CF_PWRON_BUSON_RESETON_VAL      0x00007213
  53 #define BCR_CF_PWRON_BUSON_RESETOFF_VAL     0x00007211
  54
  55         /* we see from the GPIO bit if the card is present */
  56         cardDetect = !(GPLR0 & GPIO_bit (14));
  57
  58         if (cardDetect) {
  59                 printf ("No PCMCIA card found!\n");
  60         }
  61
  62         /* reset the card via the BCR line */
  63         *v_pBCRReg = (unsigned) BCR_CF_INIT_VAL;
  64         msWait (500);
  65
  66         *v_pBCRReg = (unsigned) BCR_CF_PWRON_BUSOFF_RESETOFF_VAL;
  67         msWait (500);
  68
  69         *v_pBCRReg = (unsigned) BCR_CF_PWRON_BUSOFF_RESETON_VAL;
  70         msWait (500);
  71
  72         *v_pBCRReg = (unsigned) BCR_CF_PWRON_BUSON_RESETON_VAL;
  73         msWait (500);
  74
  75         *v_pBCRReg = (unsigned) BCR_CF_PWRON_BUSON_RESETOFF_VAL;
  76         msWait (1500);
  77
  78         /* enable address bus */
  79         GPCR1 = 0x01;
  80         /* and the first CF slot */
  81         MECR = 0x00000002;
  82
  83 #endif /* EXADRON 1 */
  84
  85         rc = check_ide_device (0);      /* use just slot 0 */
  86
  87         return rc;
  88 }
  89
  90 #if defined(CONFIG_CMD_PCMCIA)
  91 int pcmcia_off (void)
  92 {
  93         return 0;
  94 }
  95 #endif
  96
  97 #endif /* CONFIG_PXA_PCMCIA */