blob: 23e786b5b88c9bb4eaf8aec7aa9166ec059b65b2 [file] [log] [blame]
Mike Frysinger5f796442009-11-30 13:08:39 -05001/*
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 <asm/blackfin.h>
14#include "bf533-stamp.h"
15
16void cf_outb(unsigned char val, volatile unsigned char *addr)
17{
18 /* "ETHERNET" means the expansion memory banks */
19 swap_to(ETHERNET);
20
21 *addr = val;
22 SSYNC();
23
24 swap_to(FLASH);
25}
26
27unsigned char cf_inb(volatile unsigned char *addr)
28{
29 unsigned char c;
30
31 swap_to(ETHERNET);
32
33 c = *addr;
34 SSYNC();
35
36 swap_to(FLASH);
37
38 return c;
39}
40
41void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
42{
43 int i;
44
45 swap_to(ETHERNET);
46
47 for (i = 0; i < words; i++) {
48 *(sect_buf + i) = *addr;
49 SSYNC();
50 }
51
52 swap_to(FLASH);
53}
54
55void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
56{
57 int i;
58
59 swap_to(ETHERNET);
60
61 for (i = 0; i < words; i++) {
62 *addr = *(sect_buf + i);
63 SSYNC();
64 }
65
66 swap_to(FLASH);
67}
68
69void cf_ide_init(void)
70{
71 int i, cf_stat;
72
73 /* Check whether CF card is inserted */
74 bfin_write_FIO_EDGE(FIO_EDGE_CF_BITS);
75 bfin_write_FIO_POLAR(FIO_POLAR_CF_BITS);
76 for (i = 0; i < 0x300; i++)
77 asm volatile("nop;");
78
79 cf_stat = bfin_read_FIO_FLAG_S() & CF_STAT_BITS;
80
81 bfin_write_FIO_EDGE(FIO_EDGE_BITS);
82 bfin_write_FIO_POLAR(FIO_POLAR_BITS);
83
84 if (!cf_stat) {
85 for (i = 0; i < 0x3000; i++)
86 asm volatile("nop;");
87
88 ide_init();
89 }
90}