mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 22:20:45 +00:00
9280c3f106
Much of the local bf533-stamp.h header is unused, and the few bits that are are only needed in one file. So move the few used bits out and punt all the rest. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
98 lines
1.6 KiB
C
98 lines
1.6 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>
|
|
|
|
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();
|
|
}
|
|
}
|