board/bf537-stamp/ide-cf.c

   1 /*
   2  * CF IDE addon card code
   3  *
   4  * Enter bugs at http://blackfin.uclinux.org/
   5  *
   6  * Copyright (c) 2005-2009 Analog Devices Inc.
   7  *
   8  * Licensed under the GPL-2 or later.
   9  */
  10
  11 #include <common.h>
  12 #include <config.h>
  13 #include <command.h>
  14 #include <asm/blackfin.h>
  15
  16 void cf_outb(unsigned char val, volatile unsigned char *addr)
  17 {
  18         *(addr) = val;
  19         SSYNC();
  20 }
  21
  22 unsigned char cf_inb(volatile unsigned char *addr)
  23 {
  24         volatile unsigned char c;
  25
  26         c = *(addr);
  27         SSYNC();
  28
  29         return c;
  30 }
  31
  32 void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
  33 {
  34         int i;
  35
  36         for (i = 0; i < words; i++)
  37                 *(sect_buf + i) = *(addr);
  38         SSYNC();
  39 }
  40
  41 void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
  42 {
  43         int i;
  44
  45         for (i = 0; i < words; i++)
  46                 *(addr) = *(sect_buf + i);
  47         SSYNC();
  48 }
  49
  50 void cf_ide_init(void)
  51 {
  52 #if defined(CONFIG_BFIN_TRUE_IDE)
  53         /* Enable ATASEL when in True IDE mode */
  54         printf("Using CF True IDE Mode\n");
  55         cf_outb(0, (unsigned char *)CONFIG_CF_ATASEL_ENA);
  56         udelay(1000);
  57 #elif defined(CONFIG_BFIN_CF_IDE)
  58         /* Disable ATASEL when we're in Common Memory Mode */
  59         printf("Using CF Common Memory Mode\n");
  60         cf_outb(0, (unsigned char *)CONFIG_CF_ATASEL_DIS);
  61         udelay(1000);
  62 #elif defined(CONFIG_BFIN_HDD_IDE)
  63         printf("Using HDD IDE Mode\n");
  64 #endif
  65         ide_init();
  66 }