6b13f685e
 김민수
BSP 최초 추가
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/*
* 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>
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);
}
/* Definitions used in Compact Flash Boot support */
#define FIO_EDGE_CF_BITS 0x0000
#define FIO_POLAR_CF_BITS 0x0000
#define FIO_EDGE_BITS 0x1E0
#define FIO_POLAR_BITS 0x160
/* Compact flash status bits in status register */
#define CF_STAT_BITS 0x00000060
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();
}
}
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