u-boot/board/bf533-stamp/ide-cf.c
Mike Frysinger 5f79644d26 Blackfin: bf533-stamp: split and cleanup CF/IDE code
Give the CF/IDE code its own file to keep things cleanly separated.  While
we're here, clean up the code to use common functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-01-17 09:17:27 -05:00

90 lines
1.4 KiB
C

/*
* CF IDE addon card code
*
* Enter bugs at http://blackfin.uclinux.org/
*
* Copyright (c) 2005-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <common.h>
#include <config.h>
#include <asm/blackfin.h>
#include "bf533-stamp.h"
void cf_outb(unsigned char val, volatile unsigned char *addr)
{
/* "ETHERNET" means the expansion memory banks */
swap_to(ETHERNET);
*addr = val;
SSYNC();
swap_to(FLASH);
}
unsigned char cf_inb(volatile unsigned char *addr)
{
unsigned char c;
swap_to(ETHERNET);
c = *addr;
SSYNC();
swap_to(FLASH);
return c;
}
void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
{
int i;
swap_to(ETHERNET);
for (i = 0; i < words; i++) {
*(sect_buf + i) = *addr;
SSYNC();
}
swap_to(FLASH);
}
void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
{
int i;
swap_to(ETHERNET);
for (i = 0; i < words; i++) {
*addr = *(sect_buf + i);
SSYNC();
}
swap_to(FLASH);
}
void cf_ide_init(void)
{
int i, cf_stat;
/* Check whether CF card is inserted */
bfin_write_FIO_EDGE(FIO_EDGE_CF_BITS);
bfin_write_FIO_POLAR(FIO_POLAR_CF_BITS);
for (i = 0; i < 0x300; i++)
asm volatile("nop;");
cf_stat = bfin_read_FIO_FLAG_S() & CF_STAT_BITS;
bfin_write_FIO_EDGE(FIO_EDGE_BITS);
bfin_write_FIO_POLAR(FIO_POLAR_BITS);
if (!cf_stat) {
for (i = 0; i < 0x3000; i++)
asm volatile("nop;");
ide_init();
}
}